TYPE B.S .3 TILTEfii
★
440 tbs. G U N M E T A L M E L T E D 40 M I N S . P O U R IN G T E M P .I,3CG° C.
OTHER T)PES AVAILABLE 100 l b . P O R T A B L E 2 4 0 l b . P I T T Y P E 6 0 0 l b . T I L T E R 1 , 0 0 0 l b . T I L T E R
M ID L A N D M O NO LITH IC
FURNACE LINING CO. LID
BLACK SEAM HOUSE • NARBOROUGH- LEICESTER
T E L E P H O N E S 2228-9 NARBOROUGH ( L E IC S .) 2 LIN ES T E L E G R A M S M O N O L IT H IC - N A R B O R O U G H - L E IC E S T E R
T E I S E N
SIAM I L L I N i l M I IP P T .r C .
H V D R O - B L R S T
Removes cores... cleans castings... reclaims sand Built by
RITISH 0ULDING ACHINE C° LTD
.and O v e rs e a s , 21 /- ( F r é t a i WITH WHICH IS INCORPORATED TH E IR O N A N D S T E E L T R A D E S J O U R N A L
V O L . 74. N o . 1468. O C T O B E R 5, 1944 TAnnu*a|CSubst?l«»t|Bci>P°Ho
Registered at the G .P.O . os a Newspaper» Offices : 49, W ellin gton Street, Strand, London, W .C .2 . L a “
INVEST IN
MANSFIELD MOULDING SAND
VERSHAM, KENT.
n i •
BOXES
S T E R L IN G F O U N D R Y SPECIALITIES L T D ., B E D F O R D
P U L V E R I S E D R E A D Y F O R U S E I F R E Q U I R E D
A L B I O N (M an s fie ld ) S A N D C O . l i e ' s : W . W A R D °L T D . A l b i o " W o r k s , S H E F F IE L D
T e lep h o n e s: S h e ffie ld 26311 (15 lin e s) M an sfield 3 7 1
O C T O B E R S, 1944 F O U N D R Y T R A D E JO U R N A L
P A T E N T S A N D
M IXIN G
Capacity, c. cwts m3 ivuns.^
* --
M ACH INE, f V ^
f ( g > — . ___
[ 5 > a e r m o
* E S T A B L IS H «! T f \ '
t V L ,9oB / ! / <
Y W #
I
PATENT ROTARY
CO RE MACHINE
S permolin ltd~|
H A L IF A X . Y O R K S
F O U N D R Y T R A D E J O U R N A L OCTOBER 5, 1944 jcTO
There is something to be said for the conservative method of manufacturing pig iron with plenty of limestone in the charge— it does keep down the sulphur content of the iron. There is a lot more to be said for the modern tendency to operate the blast furnace with a leaner burden and thus increase output — maximurp iron production needs no brief in these days. N o, we are not overlooking the resulting additional sulphur pick-up, but you can — if you treat the iron in the ladle with Sodium
Carbonate. I n the case of most grades of cast iron, treatment in the ladle with 1% dense sodium carbonate removes 50% of the sulphur present in the metal. Simple, effective, economically increased output.
I M P E R I A L C H E M I C A L I N D U S T R I E S L I M I T E D
__________________________________ i
C . N . 1116
W hen compared with less flexible m ethods o f metal handling, a practical com bination o f Morris cranes and runways has at least one notable ad van tage;
pouring can be carried on sim ultaneously at widely separated points.
The runway feeds the metal to the cranes, which can therefore spend all their tim e on pouring.
O C T O B E R 5, 1944 F O U N D R Y T R A D E JO U R N A L
H erbert M orris L im ited
L oughborough E ngland
III!1(11
FOUNDRY TRADE JO URN AL O C T O B E R 5, 1944 ) CTOBl
F O U R BIRDS WITH EVERY STONE
• • •O F
O D ep en d ab ility
# Analysis to Specification
® U n ifo rm D is tr ib u tio n o f Alloys O H igh D u ty Castings
W A R N E R R E F I N E D
A L L O Y PIG IRON
. W A R N E R & C o. L td. M ID D L E S B R O U G H .
O U S T
o u 5 > “"tc“
“ T T i n r r J T V k t - Ä - - .
i
C O N T R O L L E D m i S J U R LT D
CORNWALL ROAD - SMETHWICK - BIRMINGHAM
5. 1944 FOUNDRY TRADE JOURNAL 7
A M ° u ,d yy
he Cor/! ^ C A S T l l s|GS
f 0 r l R • pEc .aU Ro n
\ PLUtAP, o , « • * * * - ■
-cA ep''00 ® ’
STEEL CONVERTERS CHARGING MACHINES MOULDING MACHINES C U P O L A S • F A N S R O O T S • B L O W E R S S A N D M I L L S • ETC.
ARMSTRONG W H ITW O R TH
R E F I N E D I R O N
Associated Companies :
S ir W . e . A R MS T R O N G WH I T WO R T H & C O . i l RONFOUNDERSI LTD.
ARMSTRONG WHITWORTH S CO. (PNEUMATIC TOOLSI LTD. JARROW METAL INDUSTRIES LIMITED
GREAT W E S T E R N W O R K S • SMALL HEATH • B IR M IN G H A M II
L o n d o n O ffic e 2.QUEEN ANNE'S GATE . W E S T M IN S T E R , LO N D O N S . W . I
CHROMIUM-MOLYB 3 % CHROMIUM
FOUNDRY TRADE JO URNAL O C T O BER 5, 1944 0C1
O C TO BER 5, |944 F O U N D R Y T R A D E JO U R N A L 9
“ R A M O L I T H ”
(R E G IS T E R E D )
FOR LINING FURNACE DOORS
NO BRICKS TO FALL OUT
T H O M A S E. Q R Â Y & CO. LTD.
G R A N B Y C H A M B E R S , K E T T E R I N G
EST A B LISH ED 1877.
10 FOUNDRY TRADE JO URNAL O C T O B E R 5, 1944
B a l l a r d Core D ry in g Ovens
ALL T Y P E S including
SHELF TYPE • DRAW ER TYPE • BOGIE TYPE
m ade any size to suit requirem ents
GAS or COKE FIRED W ITH or WITHOUT FAN CIRCULATION
CO N TIN U O U S T Y P E CORE O V E N S M A D E B Y S P E C IA L IS T S I N
C O N TIN U O U S O V E N D E S IG N
F. J. BALLARD & CO. LTD., TIVIDALE • TIPTON • STAFFS.
P h o n e : T I P T O N 1281-3ABRASIVE WHEELS
for High and Normal Speeds . . . HIGH SPEED ELECTRICALLY DRIVEN DRY G R I N D E R S
IN STANDARD SIZES
WET and DRY GRINDERS TOOL GRINDERS etc.
LUKE & SPENCER, LTD.
BROADHEATH
Telephone : Altrincham 3281-3282 Telegrams : Emery, Altrincham,
ALTRINCHAM
Code : A B C , 5th ćr 6th Editions
O C T O BER 5 1944 FOUNDRY TRADE JO U RN A L II
C O N C E N T R A T E
Q tf TlAE 'C O R E '
G
E T T IN G down to fundamentals ; the very core of operations both in w ar and in foundry practice, depends upon the right materials, rightly used.
Good moulders, like good generals, know that expert attention to the “ C O R E ” brings its own reward.
B A L T IS E E D core compounds appeal to every foundry craftsman who takes pride in a fine finish— and finish, as the Nazi boys w ill say
“ means E V E R Y T H IN G .”
D etails and fu lle s t descriptive literature w ill be sent glad ly on request to all interested in dependable foundry m aterials
C O R E C O M P O U N D S
!Um.fl5KE&C° LTP Victoria Oil lUorfes. Halifax
B A L T I S E E D
CORE O IL ________________
Telephone: Halifax 330 6 compounds Telegrams: 3 3 0 8 Halifax
FOUNDRY
REFRACTORY CONCRETE
REFRACTORY AGGREGATE BONDED WITH HIGH ALUMINA CEMENT
NO PREFIRING NO SHRINKAGE READY FOR USE
IN 24 HOURS
NON-SP ALLING
R efra cto ry C o n crete is n o n - spalling under the most violent c o n d itio n s o f therm al sh o ck . Refractory Concrete can be cast into any shape and practically a n y s iz e , th u s v e r y la r g ely , e lim in a tin g tro u b le s d ue to
joints.
I M M E D I A T E L Y A V A I L A B L E
1 « I HfGH ALUMINA C£MENT
L A F A R G E A L U M I N O U S C E M E N T C O M P A N Y L I M I T E D
T H E K I L t o , R IP L E Y , S U R R E Y . 'PH O N E ; R IP L E Y 3IS.9
TRADE JO U RN A L O C T O B E R 5, 1944
Iron, Steel and Brass Foundry Melting Equip
ments are our Speciality
G E O R G E G R E E N & C O .
Foundry Equipment Engineers & Contractors
K E IG H L E Y , YO RKS.
(Estab lish e d 1900)
T e le g ra m s : “ C u p o la ,” K e ig h le y . T e le p h o n e : 2518 K e ig h le y.
C U P O L A S , S T E E L C O N V E R T E R S , C R U C IB L E A N D N O N - C R U C IB L E F U R N A C E S , C U P O L A C H A R G IN G M A C H IN E S , H O IS T S , M O T O R F A N S , L A D L E S , S A N D M IL L S A N D S IF T E R S , R U M B L E R S , P IG IR O N B R E A K IN G M A C H IN E S ,
R O T A R Y C O R E M A C H IN E S , ET C .
O C T O BER 5, 1944 FOUNDRY TRADE JO URNAL 13
E C O N O M IC A L
AND EFFIC IEN T A i r l e s s S h o t b l a s t i n g !
A 90-in. diam. Table Type SAND W IZA R D Airless Sandblast Machine with Dust Extraction Plant.
4.Also made in Rumbler Type in a range of sizes.
14 FOUNDRY TRADE JO U RN A L O C T O B E R 5, 1944
G R E A V E S - E T C H E L L S
ELECTRIC STEEL
F U R N A C E S
More than 100 Furnaces supplied during last 7 years W A T SO N R O T A T IN G
E L E C T R IC F U R N A C ES Ensure
R A P ID & C L EA N M E L T IN G T H O R O U G H M IX IN G N O N -F E R R O U S M E T A L
M E L T IN G E L E C T R IC FU R N A C ES Single, T w o, o r T h re e Phase Contractors to Home and Foreign
Governments
W A T S O N S
( M E T A L L U R G I S T S )
l i m i t e d
Pulvometal Works, Mill Lane, DRONFIELD
O C T O BER S, 1944 FOUNDRY TRADE JO URN A L 15
S h o t B l a s t F e a t u r e s— N o .
4
C O N T IN U O U S B LA S T
Automatic Continuous Pressure Apparatus
*T "H E necessity for in terru p tin g Blast cleaning to allo w the pressure vessel to refill can be obviated by th e installation of the new S P E N S T E A D A u to m a tic Pressure Apparatus.
T h is n e w feature may be incorporated
in new o r existing installations, and enables the ideal of continuous production to be obtained.
★
Just another reason why Spenstead is preferredSPENCER t HALSTEAD P
RKS.
T e le p h o n e d O s s e lt 363-4
L O N D O N : 22 O L D Q U E E N ST., W E S T M IN S T E R , S .W . I R U G B Y : 17 L A W F O R D R O A D
G L A S G O W : 60 ST. E N O C H S Q U A R E , C .l
Established 1902
WITH WHICH -IS INCORPORATED T H E I R O N A N D S T E E L T R A D E S ¡ O U R N A L
49, W ellin g to n Stre e t, London, W . C . 2.
W A R T I M E A D D R E S S to w hich all communications should be sent i__
3, Amereham Road, HI G H W Y C O M B E , Bucks.
’Gram s i “ Zacatecas, High W y c o m b e .”
•Phone i H IG H W Y C O M B E 1792 (3 lines).
P U B L I S H E D W E E K L Y i 21a. per annum (H o m e and O ve rse ai )
O F F IC IA L O R G A N O F i
C O U N C I L O F I R O N F O U N D R Y A S S O C I A T I O N S Chairm an l F ltiH e r b e r t W rig h t, The B u tte rle y Com pany Ripley near D e rb y . S ecretary I V . D e lp o rt, 2, Caxton Stre e t, W e s tm in s te r, S . W . I.
Participating Associations t B ritish Bath M anufacturers' A ssociation British Iron fou n ders’ Association ; British M alleable Tube Fittings A ssociation ; Cast Iron A x le b o x Association ; Cast Iron C h a ir Associa
tio n ; Cast Iron Heating, B o ile r and Rad iator M an u factu rers’ Association • Cast Iron Segm ent A s s o c ia tio n ; Greensand Pipe Fou n d ers’ Association of Sco tlan d ; Iro n fo u n d e rs' N atio n al Confederation ; N atio n al Associa
tion of M alleable Ironfoun ders ; N atio n al Ingot M ould Association • N atio n al Ironfoun dlng E m p lo y e rs ’ F e d e ra tio n A ssociat/on o f Aut<>
m o b ile and A llie d H ig h D u ty Iro n fo u n d e rs ; B ritis h Cast Iron Research A ssociation (a ffilia te d ); British G r it A ssociation (affiliated^ • Flushing C is te rn M ak e rs ’ A ssociation (affiliated) ; In s titu te o f British F o u n d rym en (affiliated ). ______
I N S T I T U T E O F BRITISH F O U N D R Y M E N P R E S ID E N T , 1944-45 : Jo h n W . G ard o m , R ip le y D e rb y s h ire . G e n e ral S e cretary I T . Makemson. A ctin g S e c re ta ry , J . tioiton Saint Jo h n S tre e t Cham bers, Deansgate, M anchester 3.
B R A N C H E S
Birm ingham . C o v e n try and W e s t M id lan d s! A . A . Tim m ins, F .I.C . 33^ C a r t e r s Lan e, Q u in to n . B ris to l and W e s t of E n g la n d : A . Hares, 20, G r e e n b a n k R o ad , H a n h am , B risto l. E. Midlands i S. A . H o rto n “ T h re e ,” M ostyn A ven u e, Llttle o v e r, D erby. Lancs : H . B u c k ley, Elle s m e re, N o r f o lk A v e n u e , B u rn le y . L o n d o n : V. C . Faulkner, 3, Am ersham Road, High W y co m b e . M iddlesbrough (pro tem.) : J. K . Sm ithson, N orth -Eastern Iron Refining Com pany, Lim ited, Stilllngton, Stockton-on-Tees. Newcastle-upon-Tyne : C . Lashly, S ir W . G . A r m strong, W h itw o r t h & C o . (Ironfounders), Ltd., Close W o rk s , Gateshead Scottish i J. Bell, 60, St. Enoch Square, Glasgow. Sheffield : T . R. W a l k e r, M .A ., English S te e l C o rp o ra tio n , L td ., Sheffield. W a le s and M onm outh j A . S. W a ll, 14, P a la ce A v e n u e , Llandaff, C ard iff. W e s t Riding of Y o r k s h ir e : D ou g las Je p so n , M .Sc., 9, Am bleside A v en u e, B rad fo rd . South A frica : B. P. S k o k , M utual Building, Johannesburg.
S E C T IO N S
B u rn le y I H . Bu ckley, Ellesm ere, N o rfo lk Avenue, B u rn le v, Lancs.
CapeJ T o w n : K . Z w a n z U e r , P .O . B o x 346, C ape T o w n , S. A frica, bast Anglian i A . N . S u m n e r, 516, N o r w ic h Road, Ipswich F a lk irk : T. R. G o o d w in . “ V le w field ,” Falkirk Road, Bonnybridge. Lincoln i E.
R. W a lt e r , P h .D ., T h e Technical College, Lincoln.
A S S O C I A T I O N OF B R O N Z E A N D BR AS S F O U N D E RS P re s id e n t : H . Bissell, J. Sto n e & C o ., L td ., Lo n d on . S e c re ta rie s : H e ath co te & C o lem an , 25, B en n e tts H ill, Birm in gh am , 2
T H E I N S T I T U T E O F V I T R E O U S E N A M E L L E R S Presid en t I W . H . W h it t le , W . H. W h ittle , Lim ited, Eccles, near M anchester. C hairm an i W . To d d , Park in son S to v e C o .. L td ., Stech- fo rd , B irm in g h am . Hon. Sec. ! W . Thom as, A .I.C ., B an k House, High S tr e e t, R ick m an s w o rth , H e rts.
F O U N D R Y T R A D E S * E Q U I P M E N T A N D S U P P L I E S A S S O C I A T I O N
Presid en t I G . E. France, A u gu st’s, Lim ited, Th o rn T re e W o r k s , Halifax. H o n o r a ry S e c r e t a r y : K. W . Bridges. Assistant S e c re ta ry ! Miss L. C o x, 52, Su rb ito n H ill Park, Su rb ito n , Su rrey.
W E L S H E N G I N E E R S * A N D F O U N D E R S * A S S O C I A T I O N Presiden t i W . E. C lem en t, C .B .E ., M orfa Foundry, N e w D ock. Llan elly S e c re ta ry : J. D. D . D avis, I, St. Jam es Garden« Swansea.
_ .
B R I T I S H C A S T I R O N R E S E A R C H A S S O C I A T I O N A lv e e h u r c h , B ir m in g h a m . 'P h o n e a n d ’G r a m s : R e d d lt c h 7 l6 . S c o t tis h L a b o r a t o r ie s : — F o u n d r y T e c h n ic a l In s tit u te .M e e k 's Ro»
FatklrW. (Phon- •
The fact that goods made of raw materials in short supply owing to war conditions are advertised +u¡c pnnpr should not he taken as an indication that they are necessarily available for export
16 FOUNDRY TRADE JO URN A L O C T O B E R 5, 1944
The need for all possible conservation o f man p o w e r;
the demand for the m axim um output o f vital cast metallic products ; the insistence upon the lowest cost o f produc
tion ; and the necessity o f maintaining, and even improving, the quality o f those products.
A ll these conditions combine to point to the only satisfactory solution to all these problems -
MECHANISATION
but it must be mechanisation particularly considered, designed and adapted to the individual site conditions;
to the particular product ; and with full regard to a ll the factors, economic, geographical and human, which may have any bearing on the problem.
In other words consult :—
“ The Specialists in Foundry Mechanisation”
whose products
“ Set the Standard b y which Foundry Plant is ju d g e d .”
L I M I T E D
'P h o n e s : 6 1 2 4 7 &. 8 H A L I F A X , E N G L A N D ’G r a m s : A u g u s t, H a l i f a x Sole L icen sees a n d m a n u f a c t u r e r s for B r itis h E m p ir e ( e x c lu d in g C a n a d a ) of the S im p s o n S a n d M i x e r
ramuiry ,rade Journal, October
5
, 1944WITH WHICH li INCORPORATED T H E IR O N A N D ST E EL T R A D ES JO U R N A L e s ta b lis h e d ! $ 0 2
Vol. 74 Thursday, O c to b e r 5, 1944 No. 1468
“ Metamorphobia ”
This is a new type of bacillus which is ravaging many sections o f the foundry industry. Its cause is attributable to the progress which the Allies are making against the enemy, and can best be described as a persistent itch for many changes.
Manufacturers are fed up manufacturing austerity equipment which nobody neither likes nor wants.
They learn of model houses carrying well-finished, vitreous enamelled fitments of all kinds, whilst they are largely tied down to black equipment.
This was imposed by Government order to save a few man-hours o f manufacturing time whilst wasting many weeks yearly in maintenance and simultaneously wasting fuel through the loss of insulating properties. There is an itch to find one really competent authority which can give an
“ O.K.” for worth-while schemes for such obviously urgent problems of rehabilitating London’s battered suburbs, and so to change this constant reference to so many departments. There is a feeling abroad that standardisation is delaying rather than accelerating output in the production of builders’
castings, as the volume of repair work is so pressing, as it includes spare parts for making good existing models o f every type of household equipment.
As to the shortage of man-power, it is common gossip that many sections of armament industry are only working at half pressure, and many workers could be usefully transferred to the foundries needing labour for re-equipping damaged property. Moreover, we doubt if the essential raw materials are in short supply, except fuel. Being what is to our mind first priority after the needs of the fighting forces have been supplied, fuel should be made available for this purpose. Put plainly, any builder, builders’ merchant or foundry concern which can make a contribution to the rapid repair o f houses or their re-equipment with stoves, cookers, boilers, gas or electric irons, and sanitary equipment, should be given every facility to get on with the job. -Improvisation was neces
sary after Dunkirk to put our armaments in some sort of order, standardisation and mass-production came later. A similar state of affairs exists to-day
in so far as housing is concerned. This is well realised by every foundry owner, and that is why they are suffering from “ Metamorphobia ”— the itch to change the present chaotic conditions.
U.S.A. TO IMPORT SOUTH AFRICAN CORUNDUM
T h e A m e rican W ar P ro d u ctio n B o ard re p o rts p lans to increase tonnages o f co ru n d u m fro m S outh A frica.
R ecent investigations in the S outh A frican area indi
cated th a t p resen t p ro d u ctio n levels fo r the abrasive m ate ria l can be raised only by new prospecting c am paigns a n d im p ro v ed m ining an d c o ncentrating o p e ra tions. A verage m o n th ly shipm ents fro m S outh A frica d uring the first h a lf o f 1944 d id n o t increase m aterially an d w ere consistently in ad eq u ate f o r in d u stry ’s req u ire
m ents. T he F o reig n E conom ic A dm in istratio n has a p ro g ram m e designed to o b tain increased p roduction, an d is sending an engineer to S outh A frica to assist in c arrying o u t its plans.
C o n su m p tio n figures fo r p rim ary c o ru n d u m grains w ere presented. These show ed the reduced percentage consum ed by th e grinding w heel industry, an d the in creased p ercentage o f usage by the op tical industry.
S h o rt stocks o f grinding w heel grain have n o t p e r
m itted th e g ran tin g of all requests fo r allocations.
T o ta l superfine flour stocks indicate an ap p aren tly easy position. H ow ever, a breakdow n of these stocks into th ree size groups show s th a t the m edium sizes, in greatest dem and by the o p tic al industry, continue to be in relatively sh o rt supply. A relatively easy position exists only w ith respect to th o se sizes n o t in g reat dem and. G a rn e t fines continued to afford relief in the field o f superfine flour. A p p ro x im ately 7 p e r cent, of in d u stry ’s req u irem en ts are being supplied in the form o f g arn et fines.
C on ten ts
“ M etam o rp h o b ia,” 85.—U.S.A. to Im p o rt South A frican C orundum , 85.—Iro n fo u n d ry F uel News—X X I I I , 86.—In s titu te C alen d ar, 86.—In d u s tria l B lack o u t, 86.—Some U seful W artim e D evelopm ents in W h ite h e a rt M alleable Iro n , 87.—Develop
m en ts in a n A m erican F o u n d ry , 92.—E q u ip m en t of N o rth o lt D e m o n stratio n H ouses, 92.—N o tes from th e B ranches, 9 2 - C atalo g u e Received, 92.—The F o u n d ries of H . J . M aybrey &
C om pany, 93.—Speed of R o ta tio n in th e C en trifu g a l C astin g Process, 9 5 —A m erican A lum inium O u tp u t Reduced, 99.—
In d u s tria l I n ju r y In su ra n c e , 100.—Scottish In d u s try A fter the vT?r , J L02~ T ou n dry E d u catio n in L an cash ire, 102.—O bitu ary , IS“- N ews in B rief, 104.—P erso n al, 104,—C om pany R esults, 104— R aw M ate ria] M ark ets, 106,
8é FOUNDRY TRADE JO URN A L O C T O B E R S, 1944
IRO N FO UN D RY FUEL N EW S—X X III
A few m o n th s ago refere n ce w as m ad e in o n e o f these articles to a h e atin g stove designed to b u rn saw dust. A s th e su p p ly p o sitio n o f co al is n o t likely to be an y b e tte r this w in ter th a n prev io u sly , a n d coke m ay w ell be distin ctly in sh o rte r supply, it is believed th a t fo u n d e rs m ay b e in terested in m o re details a b o u t a stove w h ich consum es a fuel w hich is re ad ily o b ta in able by m an y firm s. Fig. 1 illu stra te s th e tw o -d ru m
Fi g. 1 .— Tw o- Dr u m Sa w d u s t St o v e. ( C ro w n c o p y r ig h t re se rv e d . P u b lis h e d b y p e r m i s s i o n o f the C o n tro ller,
H .M . S ta tio n e r y Office.)
saw d u st stove w hich, it will be seen, consists chiefly o f tw o e m p ty oil drum s. T h e sm aller rem o v ab le d ru m , w ith th e to p c u t o u t a n d a 2-in. h o le c u t in the cen tre o f th e base, rests on a su p p o rtin g rin g inside th e larg e r d ru m w hich is fitted w ith a re m o v a b le cover. T h is co v er p late h a s an asbestos gasket, a n d sh o u ld be cap a b le o f being fixed o r h e ld do w n firm ly. A n a d ju stab le a ir in let below the su p p o rtin g ring an d a stove pipe ju s t ab o v e it c o m p lete th e stove.
(C o n tin u e d at fo o t o f n e xt co lu m n .)
INSTITUTE CALEN D AR
M E E T IN G S F O R O C T O B E R
L in c o ln Sectio n an d E a st M id la n d s B ra n ch .— V isit to the W o rk s o f R u sto n & H o rn sb y , L im ited , L in co ln . P resid en tial A d d ress by A. W eig h tm an . borne A spects o f M o d e m F o u n d ry P ra c tice ,” by R. C.
S hepherd. A t the can tee n o f R u sto n & H o rn s b y , L im ited, L in co ln , O c to b e r 7, a t 6 p.m .
S co ttish B ranch.— P re sid e n tia l A d d re ss by T . T y rie, B.Sc. “ W artim e C alls on W o m en to M a k e A lu m in iu m A ir-C o o led C y lin d er H e ad s .” S o u n d film b y M . J.
G reg o ry . A t the R o y al T ec h n ic a l C ollege, G e o rg e S treet, G lasg o w , O c to b e r 14, a t 3 p.m .
W est R id in g o f Y o r k s h ir e B ra n ch .— P re sid e n tia l A ddress by J. B lakiston, A .M .I.M ec h .E . “ M ec h an ical A ids to C o re P ro d u c tio n ,” by J. B lak isto n . A t the T ech n ical C ollege, B ra d fo rd , O c to b e r 14, a t 6.30 p.m .
S h e ffie ld B ranch.— P re sid en tial A d d re ss by E.
B a rro n , en title d “F o u n d ry M in d e d n ess,” fo llo w e d by a discussion. A t the R o y a l V ic to ria H o te l, Sheffield, O c to b er 23, a t 7 p.m .
F a lk irk S ectio n .— “ M e th o d s a n d P ro b le m s In d i
genous to a G e n e ra l E n g in eerin g F o u n d ry ,” by W m . M o n tg o m ery an d J. D o ig . J u n r. A t th e S m oke R oom . T em p eran ce C afé, F a lk irk , O c to b er 27, a t 7 p.m .
INDUSTRIAL BLA C KO U T
W e are an x io u s to receive fro m re ad e rs, e ith e r fo r p u b lic a tio n o r fo r o u r p e rso n a l in fo rm a tio n o nly, their o b serv atio n s as to how lo cal a u th o ritie s a re dealing w ith th e qu estio n o f in d u stria l b lac k o u t. W hile it is difficult to achieve u n ifo rm ity in this m a tte r, read ers’
views w ou ld be a p p rec ia ted .
(C o n tin u ed fr o m p re v io u s c o lu m n .)
T o p re p a re f o r lighting, a w o o d e n r o d o r m eta l pipe, 2 in. dia., is h e ld in the cen tre o f the sm all d ru m w hich is th en packed tig h tly w ith g reen sa w d u st. (A n in ch or tw o of d ry saw d u st in the b o tto m m ay fa cilitate lig h t
ing.) T h e ro d is th e n re m o v e d a n d the d ru m sto o d on its su p p o rtin g ring. T h e stove is lit by p a p e r, sh av ings o r paraffin rag, in serted th ro u g h the a ir inlet, an d b u rn in g q u ick ly sp re ad s to th e w h o le in sid e surface o f th e " h o le . A s the saw d u st b u rn s aw ay th e a sh (a go o d fe rtilis e r!) falls in to the a sh p it an d th e h ole g ra d u ally increases in d iam eter. T he stove gives o u t a c o n sid erab le a m o u n t o f h eat, a n d w ill b u m f o r a b o u t eig h t h o u rs on one charge. If a sp a re in n e r d ru m is a v ailab le it can, o f course, b e c h arg e d re a d y f o r th e n ex t day.
F o r those n o t w ishing to m ak e th eir ow n stoves w ell-designed p ro p rie ta ry articles a re ob tain ab le "
N a m es o f suppliers will be given, on re q u e st by th e F u e l Officer, Iro n fo u n d in g In d u stry F u e l C o m m ittee A lvechurch, B irm ingham .
O C T O BER S, 1944 FOUNDRY TRADE JOURNAL
87
s o m e u s e f u l WARTIME DEVELOPMENTS
FoundryW HITEHEART MALLEABLE IRON'
By G. R. W EBSTER, A.M.I.Mech.E., A.M.I.Mar.E.
The n atio n a l em ergency beginning in 1939 im m edi
ately created un u su al dem an d s fo r m aterials possess
ing pro p erties ak in to cast or forged steels L q u a n ti
ties w hich co u ld not be m et a t th a t tim e bv the steel industry, eith er because o f insufficient c ap acity or lack o f c e rtain raw m aterials. As the w ar ebbed and
of BUtf-lf F oundrym cu. AlmUi’1 Meetto« In s titu te
\J\ u - the production o f w h i t e h e a r t m alleable c a s t in gs
flowed for the Allies, an d the arm am en t dem ands becam e even greater, the problem o f obtaining certain raw m aterials becam e m ore difficult.
to m erninn u r! P’ p 'S -'ro n S; iro n ore and core binders, o m ention b ut a few, all caused th eir tribulations.
were fm m H nST n ’ n ev er'h eless> how quickly solutions were found. T he m an u factu re o f various types of tank castings in considerable q u antities from m alleable iron kept a large p a rt o f the industry occupied.
Fi g. 1. Pa t t e r n Pl a t e f o r Tr a c k Li n k.
Fi g. 2 . — Pa t t e r n Pl a t e f o r Tr a c k Li n k.
F i g . 3 .— D r a g M o u l d f o r T r a c k L i n k a _
Ti g. 4 . — Co p e Mo u l d f o r Tr a c k Li n k.
88
P a t t e r n s a n d C o r e b o x e s
F o r the ab o v e reaso n s, it h as b e e n c le e m e d e s s e n U a to p ro d u ce v eiy a cc u rate
patterns
an d co reb o x es. ^ p a tte rn s a n d co reb o x es have, th ere fo rep letely m ach in ed to a to le ran c e o f ± ° 0 ° 4
ticu larly those co re p rin ts w h ich c o n tro l A e pitch d istance. P a tte rn s h a v e b e en m ad e in Ph °sp h ' b ro n ze, a n d th e co reb o x es in c as t iro n o r m ild ste 1.
A s ¿an be seen in Figs. 1 a n d 2, sh ow ing the p a tte rn p lates, th e spaces b etw een the fe m a le lugs w ere co m p letely co red o u t a n d th e co re P n n t s w ere ex ten d ed over the casting so as to ensu re ^ a t I?°
flashes w o u ld o ccu r in b etw een an y o f th e lugs in o rd e r to red u ce as m u ch as po ssib le th e a m o u n t ot fettlin g a fte r an n ea lin g on th o se p laces. E a c h p a ttern h a lf is m o u n te d o n a c as t-iro n p late w ith fixed T 5]
pins fo r the lo ca tio n o f m o u ld in g boxes. Figs. 3 an d 4 show b o th m o u ld p a rts w ith th e co res m p osition.
A s Figs. 5, 7, 8 a n d 9 sh ow ing th e v a rio u s links co m p lete w ith ru n n e rs illu stra te , the fins a n d flashes in each case o ccu r aw ay fro m th e castin g , leaving t e FOUNDRY TRADE JO URN A L O C T O B E R S, 1944
W h it e h e a r t M a l l e a b l e Iron
F O U N D R Y
T h e fo u n d ry p ro b lem s in the p ro d u c tio n of w hite
h e a rt m alleab le trac k links are sim ilar to th °se ot o th er w h iteh e art m alleab le castings, th e m am ditter- ence being th a t w h ereas a larg e percen tag e o f o rd in ary m alleab le castings a re usu ally m achined, th e tracK links are n o t m ach in ed a t all, w ith the ex ce p tio n ot ream erin g o u t th e pinholes. F o r this reaso n it is essential th a t th e trac k links’ dim ensions do n o t vary e x cep t w ithin very sm all lim its, p a rticu la rly the pitch d istance (distance betw een pinholes) a n d the w idth o f the m ale lugs a n d fem ale lug recesses, so as to c o n fo rm w ith th e close tolerances re q u ire d o n th e vehicles. T h e close c o n tro l o f the pitch d istance is a m ost im p o rta n t fa c to r fo r ensuring the c o rre c t length o f the trac k on -the w rap test, an d finally on the vehicle.
F i G . 5 — T r a c k L i n k C o m p l e t e w i t h R u n n e r s .
Fi g. 7 . — An o t h e r Ty p e Tr a c k Ca s t i n g. Fi g. 8 .— A Th i r d Ty p e o f Ca s t i n g. Fi g. 6 . — Se c t i o n e d Tr a c k Li n k Sh o w i n g Wa l l
Th i c k n e s s e s.
O C T O BER 5, 1944 FOUNDRY TRADE JOURNAL
r a s t i m r ketw e,en the l u § s clean. Fig. 5 show s the ' « t n f cornpiete w ith run n ers. Fig. 6 is o f the sam e , S fsectioned, show ing th e w all thickness. T he n iv „ f , castln 8s t0 the to ta l m etal in the m oulding box o t the vario u s links, as show n in Figs. 5, 7 , 8 an d
oaS/ x l0Wns:~ N °- 5> 41J ’ N o - 7 > 42-8 > N o - 8, 53.9, a n d N o . 9, 44.6 p e r cent.
M o u l d i n g
Yhe m o u ld in g o f the track links is c arried o u t on Nicholls jo lt an d squeeze m o u ld in g m achines, two m achines w o rk in g in a team , an d two m o u ld ers an d one co re setter per team . T h e co re setter is also re sponsible fo r the assem b ly o f the cope an d d rag parts of the m oulds. T h e N ich o lls jo lt an d squeeze m o u ld ing m achines hav e been fo u n d ideal fo r the p ro d u ctio n of these v ario u s track links. C astings p ro d u ced on these m ach in es are very accu rate , an d the o u tp u t per machine is very satisfacto ry . T he m achines are operated by com pressed a ir o f 80 lbs. per sq. in.
pressure. R olled steel m o u ld in g boxes are used.
Core Making
T h e m ajo rity o f the cores fo r the various types o f track links a re m ade on blow ing m achines, w ith the ex cep tio n of the cores fo r the guide h o rn s fo r links in Figs. 7, 8 an d 9, w here it was fo u n d th a t h an d - m aking of these cores was ch eap er and alm o st as fa st as blow ing. F o r the m ajo rity of the blow n cores, no core driers w ere essential, they w ere usually p u t on a flat steel p late standing on the core prints, fo r exam ple the cores produced fro m the corebox show n in Fig. 10.
T h e m o st difficult core fo r blow ing was the m ain centre core show n in Fig. 1 1, fo r the track link (Fig. 5). T his co reb o x was m ade in fo u r parts, as show n in Fig. 12.
F o r blow ing, the p a rt form ing the spud w as left off w hich was su b sequently pressed in the blow n cores by
Fi g. 9 . — A Fo u r t h Ex a m p l e o f Tr a c k Ca s t i n g.
Fi g. 1 1 —a Co m p l e t e Co r e Se t o n i t s Ca r r ie r.
Fi g. 10.— Ty p ic a l Co r e b o x in Us e.
Fi g. 12.— A Fo u r- Pa r t Co r e b o x Us e d f o r Ma k in g t h e Co r e Sh o w n i n Fi g. 11,
FOUNDRY TRADE JO URNAL OCTOBER 5, 1944
W h it e h e a r t M a l l e a b l e Iron
lightly h a m m erin g in the p late. (Show n a t the b o tto m rig h t o f Fig. 12.) T h ese cores w ere dried o n a core d rier, as show n in Figs. 11 a n d 13.
Since alm o st the w hole core is su rro u n d e d by m etal, it w as fo u n d essential to use c o arse-g rain ed silica sand w ith a h igh p erm eab ility in o rd e r to p rev en t blow holes.
H ow ever, even this w as n ot e n tirely satisfacto ry , and su bsequently tw o sm all cylindrical cores (w hich can be seen in Fig. 3) w ere used th ro u g h the spud co n n ect
ing the m ain cen tre core w ith the m o u ld , in a successful en d eav o u r to p rovide a n escape fo r th e gases.
C leaning o f L in k s .— A ll links are sh o t-b laste d on airless W izard tab le type m achines. W ith p ro p er
M e l t i n g
T h e m etal is m elted in cu p o la s w h ich a re e q u ip p ed w ith sta tio n a ry receivers. T h e m e ta l te m p e ra tu re (un
co rrec ted , m easu red w ith an o p tic a l p y ro m eter) tak e n at the receiver sp o u t, is b etw een 1,400 a n d 1,430 deg. C. T h e chem ical c o m p o sitio n o f the m o lte n m etal is c o n tro lled w ith in the fo llo w in g lirruts:— T C , 2.9 to 3.1; Si, 0.55 to 0.7; M n, 0.25 to 0.3; S, 0.16 to 0.2, an d P 0 1 per cent, m ax im u m . A ty p ical cupola c h a rg e ’ is as fo llo w s:— 68 p e r. cent, b ack scrap fro m fo u n d ry ; 10 per cent, h e m a tite o r refined pig-iron;
1 p e r cent, ferro -silico n (13 p er cent. Si), a n d -1 per cent, steel scrap.
G rin d in g .— A ll “ fla s h e s ” a re rem o v ed by grinding in th e h a rd , u n a n n ea le d state, w h ereas th e ru n n e rs an d risers are g ro u n d a fte r an n ealin g .
Fi g. 13.—Co r e Ca r r ie r.
Fi g. 1 4 .— To w n’s Ga s Fi r e d Tu n n e l An n e a l i n g Fu r n a c e.
m ain ten an ce an d o p e ratio n these m ach in es h av e been fo u n d very satisfacto ry , and give a co n sid erab ly hig h er o u tp u t th an sim ilar m achines o p erated w ith com pressed air.
F o u n d ry In sp e ctio n .— A fte r cleaning all lin k s a re first ro u g h -fettled , th a t is, an y flashes are rem oved. S u b se
q u en tly the links a re inspected, an d o nly satisfacto ry castings a re sent to be annealed. D a ily , a percen tag e of links fro m eac h p a tte rn a re b ro k e n in to sm all pieces in o rd e r to detect any sh rin k ag e cavities.
Fi g. 15.-- An n e a l i n g Ov e n Py r o m e t e r Co n t r o l Ro o m.
Fi g. 16.—Ty p e o f Gr i n d i n g Ma c h i n e Us e d f o r On e Ty p e o f Li n k.
t-uuNDRY TRADE JO URN A L
F ie i a . Annealing
a n n e llin g oven in* w hich t?hWn’S -gas fired tunneI factu red have hPPn 11 various castings m anu- a tu n n el ty p e oven are S The ad v ^ ‘ages of stressed, excellent uniform"* ° ’/ artlC ularly m ay be fuel c o n su m n tio n J?,lfo rm ity a n d co n tro l, an d low tem p eratu re o f 980 8 isn carried o ut a t a 80 to 100 hrs at th k ? " u sually m ain tain ed fo r section o f the castings ^ i n p e ra tu r®> according to the 1 to 5 an d 1 m s ore !"at10 ls v a n e d betw een Fig. 15 is o f the f n 'n ’ f.cco rd in 8 to casting section, room In the c o m m f " lng ° Ven Pyro m eter co n tro l hand side ¿ t h r p c S r e ^ m h e Hh 0 m ed ’ ° n 1116 left' sisting o f e le c tric !n C am b rid g e instru m en ts, con- S e g y K ' V r S « ” > « n several n o in t , b o tto m cen tre is the chart in a different i ’ ° • u ° in t re c o rd ing on the
coloured dial t sma11 n u m b ered and
S ed d a l - ln d lcatin g Which th erm o co u p le is in circuit a t an y m o m en t.
T o the left an d rig h t o f the above in stru m en ts a re two m u lti-p o in t in d icato rs, in co rp o ra tin g a m u lti-p o in t h an d -o p erated sw itch fo r a series o f therm ocouples situ ated a t different positions in the tun n el oven. O n th e rig h t-h a n d side o f th e p ictu re are seen “ K en t cu rv ed tu b e m a n o m e te r s ” indicating th e flow o f air a n d gas to each side o f the oven. A bove the m a n o m eters a re situ ated C am b rid g e dial gauges fo r the a ir an d gas pressures.
G rin d in g to L ength
Fig. 16 show s the m eth o d th a t was finally ad o p ted L? Sr l n d , ° n e type o f tra c k link to the co rrect length.
T h e casting is p laced on a c en trin g fixture m o u n ted on a ra ck -o p e rated ta b le a n d the w hole p u shed betw een the tw o cup g rinding w heels d irec t m o u n ted on to two electric m o to rs By a slight backw ards ancf fo rw ard s m o v em en t o f the h an d le situ ated a t the rig h t of the casting fixture, th e casting passes betw een the tw o cup wheels, g rinding th em to the exact length. T h is has
Fi g. 18.— Ca s t in g w h i c h i s Dr i l l e d Us in g Air Ch u c k s.
Fi g. 1 9 .— A S e c o n d E x a m p l e W h e r e A i r C h u c k s a r e U s e d f o r D r i l l i n g .
been found to be a quick and acc u rate m eth o d of co n tro llin g the length o f the castings fo r the subse
qu en t riveting op eratio n .
D rilling P in h o les.— T he p inholes are drilled o u t to give a good, free bearin g su rface fo r the pins; also, this ensures a reg u lar flow of castings to the sam e acc u rate pitch. In Fig. 17, the air-o p erated chucks a re seen on the tab le, open, o n a m ulti-spindle head vertical m ach in e w ith tw o castings o f the ty p e show n in Figs. 9, 18 an d 19. T he chucks are actu ated by the air feed valve, fo o t operated.
(To be continued.) Fig. 17.-- Ai r-o p e r a t e d Ch u c k s a r e Us e d f o r
Dr i l l i n g Pi n h o l e s.
92 FOUNDRY TRADE JO URN A L O C T O B E R 5, 1944
DEVELOPMENTS IN AN AMERICAN FOUND RY
T h e C ra n e C o m p an y , o f C hicago, o p erates a steel- fo u n d ry an d , like all o th e r concerns, h a s been w o rk ing a t h igh p ressure d u rin g th e w ar period. Its acti
vities h av e b een d escribed in “ S teel ” b y M r. E . F . Ross, th e C hicago e d ito r o f th a t m agazine. T h e steel turn in g s to be used in th e basic electric steel fu rn a c e p lan t are graded, a n d the c o n ta in ers are given a d e finite c o lo u r in lin e w ith th e m a te ria l fro m w hich they cam e. A fte r being g ro u n d , stringy tu rn in g s are placed in w ire b ask ets w h ich a re sp u n a t h ig h speed to rem ove the oil. E ac h m o n th th o u san d s of gallons a re th ere b y recovered.
F o r m eltin g th ere a re tw o 6-ton, a th ree a n d a to n c ap acity fu rn aces, w hich a re to p ch arg ed a fte r sw ing
ing aw ay th e ro o f. A n in n o v atio n is th e use o f w ater-co o led skim m ers fo r freein g th e b a th fro m slag.
A second o n e is th e use o f a p n e u m a tic tu b e system fo r rap id ly desp atch in g b a th sam ples to th e la b o ra to ry a n d fo r receiving th e test results.
T H E F O U N D R IE S O F H. J. M A Y B R E Y & CO.
(iC o n tin u ed fr o m page 94.)
fo u n d ry is c o n ce rn ed w ith th e m a n u fa c tu re o f sand castings. T h is fo u n d ry h a d to be in stalled on a b o m b ed la u n d ry site, an d the co n v ersio n p re sen te d n o sm all p ro b lem of reco n stru ctio n . A few m o n th s, how ever, saw a re m a rk a b le tran s fo rm a tio n , a n d w ith th e assist
ance o f m an y u p -to -d ate m ech an ical devices, the f o u n d ry w as lau n ch ed on a g reatly increased p rogram m e.
W hile retain in g its flair fo r coping w ith in d iv id u al cus
to m e r’s req u irem en ts, the fo u n d ry is in a p o sitio n to h an d le b u lk p ro d u c tio n on a larg e scale.
A d jacen t to the fo u n d ry is a p a tte rn shop, the lay o u t of w hich has been fa v o u ra b ly co m m en te d u p o n by visitors. W ith th e eq u ip m e n t on h a n d , a n y ty p e of w o o d o r m eta l p a tte rn c an b e pro d u ced , o ften a t ex trem ely sh o rt n otice. A F o rd a th m ix e r is in use fo r th e p re p a ra tio n o f co re sand, w hile co m p ressed air core sp ray ers a re la id o n a t c o n v en ien t points. T h e d rying o f cores is carried o u t in a b a tte ry o f gas-fired b a tc h -ty p e ovens.
W ith th e san d fo u n d ry a t its p resen t h ig h level of p ro d u c tio n th ere exists, qu ite n a tu ra lly , a h e a lth y sp irit of riv alry betw een the m ain foundries. T h is is e n c o u rag ed by th e m an ag em en t, a n d as a stim ulus to general in te rest a g raph, show ing each fo u n d ry ’s m o n th ly o u tp u t, is issued f o r th e e m p lo y ees’
in fo rm a tio n .
T h o u g h b y n o m ean s a w a rtim e concern, the firm recognises th e stro n g influence o f pre sen t-d ay c o n d i
tions, an d accu m u latin g exp erien ce w ill hav e a d irec t effect on th e ir po st-w ar en terp rise. T ren d s a n d d e
v elopm ents in th e a p p lic atio n o f alu m in iu m castings are c a re fu lly observed, a n d a ll th e signs p o in t to an e v er w idening m ark e t in w hich the m an ag em en t is c o n fident th eir d eclared policy o f “ q u a lity plus p ro d u c tion ” will stan d th em in good stead.
EQUIPMENT OF NORTHOLT DEMONSTRATION HOUSES
Several new fe atu res o f in terest to th e light iro n c ast
ings in d u stry are in c o rp o ra te d in d e m o n s tra tio n hou ses w hich have been erected a t N o rth o lt, M iddlesex. O f the two brick terraced houses, o n e is an all-g as h o u se an d th e o th e r co m b in es gas a n d coke. In the living ro o m o f the la tte r th ere is a n o p e n c o k e g rate, w hich w hen b a n k ed u p a n d the d a m p e r closed, is said to b u rn o nly 1 lb. o f co k e p e r h r., a n d la s t 6 hrs.
w ith o u t refuelling. W h en fu ll o u t it consum es I f lbs. p e r h r., a n d need s m ak in g u p a b o u t every th re e ho u rs. A gas p o k e r f o r in itia l lig h tin g is p rovided.
In th e k itc h e n th e re is a coke b o iler, w hich heats the an n ex e, a n d supplies h o t w a ter to th e sin k , b a th an d lav a to ry basin. C o n n e cted to this b o ile r is a gas c irc u la to r, fo r use in su m m er, w h en the c o k e b o ile r is n o t lighted. T h ere is also a gas c o o k e r w ith a h o t p late fitted beside th e co o k e r; a sm all in stan ta n eo u s gas w a ter h e a te r on the sin k f o r em erg en cy use; a p o rtab le gas w a sh -b o iler, to w h ich a w rin g e r can be attach ed , a n d a p lug-in a rra n g e m e n t f o r a gas sm o o th ing iron.
In the h all th ere is a recess a n d gas h e a te r fo r b ack g ro u n d heatin g . T h e m ain b e d ro o m h as a h e arth gas fire, an d the tw o sm a lle r ones p a n e l gas fires. A plug-in p o in t is p ro v id ed fo r a gas b o ilin g ring. In the all-gas h o u se an in n o v atio n is a g as-h eated linen cu p b o ard . T h ere a re several o th e r types o f ho u ses on e x h ib itio n , including tw o b u ilt w ith b asic fo a m slag;
tw o o f the steel fram e typ e; tw o fro m no fines concrete, and tw o using ex p an d e d clay.
NOTES FROM THE BRANCHES
Scottish Branch, F a lk irk S e c tio n .— T h e n e w session o pened on F rid a y last, a t th e T e m p e ra n c e C afé, L in t Riggs, F a lk irk , with th e new p resid en t, M r. R o n a ld R.
T a y lo r, of R o b t. T a y lo r & C o m p a n y (Iro n fo u n d ers), L im ited, L a rb e rt, in the c h air. M r. A rth u r G ro u n d s, B.Sc., p re sen te d a P a p e r on “ P lastics a n d T h eir P ossible U se as a S u b stitu te f o r C a st Iro n .” O th er P ap ers sch ed u led to tak e p lac e b e fo re the end o f the y e ar a re “ M eth o d s a n d P ro b le m s In d ig en o u s to a G e n era l E n g in eerin g F o u n d ry ,” b y M r. W m . M o n tg o m ery an d M r. Jo h n D o ig , Ju n r., o f L evin, and
“ T h e D esign a n d T estin g o f Space H e a te rs,” by M r.
J. S. H ales, o f th e B ritish C o a l U tilisa tio n R esearch A ssociation.
CATALOGUE RECEIVED
M a ch in in g Q u alities o f C o p p er. T h e E nfield R o ll
ing M ills, L im ited , o f B rim sdow n, E nfield, M iddlesex, hav e issued a 4-page leaflet to d e tail th e p ro p e rtie s of E .R .M . co p p er, especially as to its ra p id m ach in ab ility , w h eth er as w ro u g h t m a te ria l o r as castings. F u ll technical d ata, illu stra te d b y tab le s a n d a g ra p h , a re given to su b stan tiate th e claim s m ade.
lik
O C T O BER 5, 1944 FOUNDRY TRADE JOURNAL
t h e f o u n d r i e s o f h . j. m a y b r e y
C a te r in g for individual& COMPANY n deeds and bulk pro'
l i g h S y s fo u n d ry '“f r a T m a L T w ‘ v" t Bey ° nd the d ^ fo u n d ry are the view ing and of H. J. M ay b rey & C o m o an v I im t h at w orks trim m ing shops, each divided by low brick-built walls visitors w ere a l L * d y 7 q Uai n t e d w h h R n ‘ j A en^ r e , t h a t / h ift Production is n eatly se g reg a ted
alu m in iu m castings produced P SySt6m ° f fluorescent ^ r i p lighting
th o u g h perhaps previouslyPunaware of the company s versatility. Others to whom this concern was a com:
paratively new name, found the firm had actually been established for some 15 years.
T h e to u r o f in spection served to stress th a t ev ery th in g possible was being do n e to ensure the m a in te n ance o f the hig h est q u ality o f c ast
ings. A first-class casting is to be expected fro m a speciality fo u n d ry w here ex p erim en t an d research are confined to a lim ited field, b ut it is a n o th e r m atter to m ain tain this ■ stan d ard w hen a w ide v ariety o f w ork is u n d e rta k en .
T w o y ears ago, a ll m a n u fa c tu r
ing was c arried o u t u n d e r o n e ro o f, but c o n d itio n s w ere such th a t th ere was a c o n tin u a l striving to m ain ta in its prin cip les u n d e r ever-grow ing pressure o f w ork. It w as clear th a t the choice lay betw een e x p an sio n
and explosion, a n d p referen ce w as t- , „ , r- _
given to the fo rm er. T h u s a second Fr o n t o f Of f i c e s. foundry cam e in to being, follow ed
by a th ird , a n d each o f these d e veloped distin ct ch aracteristics. T he original fo u n d ry , k n o w n as N o . 1, is now reserved fo r g rav ity die-casT ings, th e sand fo u n d ry h av in g been tran sferred to one o f th e b ran ch foundries. E ac h is, to a larg e e x tent, self-contained, th o u g h N o . 1 includes the h e ad offices, h e a t-tre a t- ment p la n t an d X -ra y a p p aratu s.
T he die fo u n d ry consists o f a large cen tral sh o p w ith m o re th an 30 g ravity dies in o p e ratio n , fe d by gas-fired fu rn aces. T h e exp an sio n scheme gave the die fo u n d ry its long aw aited “ elb o w ro o m ,” an d a p a rt from increasing th e p ro d u ctio n capacity, it p ro v id ed an o p p o rtu n ity for a sy m m etrical lay o u t, th ereb y adding to th e o p erativ es’ co m fo rt.
M uch a tte n tio n has been p a id to ventilation, w ith the re su lt th a t very reaso n ab le w o rking con d itio n s have
b e e n a c h i e v e d . Fi g. 2 .— Th e Pa t t e r n Sh o p.
94 F O U N D R Y T R A D E JO U R N A L O C T O BER 5, 1944
A S pecial T rain in g C entre T h e v a rio u s fo u n d ries are linked to g eth er by a re g u la r v an service.
N o . 2 fo u n d ry is close a t h a n d , a n d com prises a sm all, co m p a ct b u ild ing, dev o ted m ain ly to the training of new em ployees, w ho a re e v en tu ally tran sferre d to eith er the sand o r die fo u n d ry as sem i-skilled w orkers. W h en the lack o f skilled op erativ es becam e acute, it w as realised th at b o th the type o f w o rk e r o b tain a b le a n d the firm itself, w ould benefit by the in tro d u c tio n o f a train in g schem e, a n d w ith this object, N o . 2 fo u n d ry cam e into being. It is best described as a fo u n d ry in m in iatu re, co n ta in in g its
ow n m elting fu rn aces, dies, core Fi g. 4 . — Th e X -r a y De p a r t m e n t.
H. J. M a y b r e y & C o m p a n y
en ab les the view ers an d trim m ers to w o rk to the best ad v an tag e a t all h o u rs. A t th e re a r o f the b u ilding are situ ated the A .I.D . inspection, h e a t-tre a tm e n t bay, X -ray d e p artm en t, an d a well e q u ip p ed m eta llu rg ica l la b o ra to ry .
T h e h e a t-tre a tm e n t section consists o f a b a tte ry o f sta n d ard E F C O c y lin d rica l jet-ty p e resistance furnaces, w hich, to g eth e r w ith a
C o n tro lle d H e a t & A ir C o m p an y in stallatio n , a re sufficient to cope w ith all p resen t h e a t-tre a tm e n t re quirem en ts, a t the sam e tim e a llo w ing a m argin fo r po ssib le increase.
W hile the X -ray plays a larg e p a rt in ro u tin e e x am in atio n , this is by no m ean s co nsidered its sole p u rp o se of in stallatio n . E v ery h ig h g rade alloy casting h as its “ teething stages,” a n d it is h ere th a t th e assist
ance o f X -ray p h o to g rap h y has proved of the g reatest value. T h e soundness o f a casting can be judged im m ed iately — v irtu ally a w hile-you-w ait service, in v alu a b le to fo u n d ry tech n iq u e a n d an u n d is
pu ted tim e saver.
T h is sectio n also ho u ses the u su a l m ach in ery fo r th e testing o f m aterials, am o n g w h ich is an A very m ach in e f o r reco rd in g the tensile a n d elo n g atio n p ro p e rties o f test- bars. A lo n g sid e th e m ain building are situ ated the to o l ro o m , draw ing office, m ain ten a n ce d e p a rtm e n t a n d canteen. T h e to o l ro o m h as all th e eq u ip m e n t necessary to tu rn o u t an y ty p e o f g ravity die, a n d u n d e r
takes th e re p a ir o f those dies a lre ad y in use.
ovens, boxes, etc., a n d the train ee s u n d e rg o in stru ctio n in all aspects o f fo u n d ry p ra ctic e re la tin g to a lu m in iu m
p ro d u cts. , .
A n interesting fe a tu re o f N o . 2 is the p o w er-d riv en , d ru m -ty p e riddle u sed f o r th e tre a tm e n t of d ro ss an d skim m ings d eriv ed fro m the m ain fa cto ries. T h e rid d le was designed by M r. R . W h ite, th e g e n era l m an ag er, w hose p ro to ty p e h as a lre a d y b e en m a rk e te d by M o lin eu x (F o u n d ry E q u ip m en t), L im ited. T h e N o . 3
(C o n tin u e d on page 92, c o lu m n 1.)
Fi g. 3 .— Se c t i o n o f t h e Die Fo u n d r y.
