. Canadian foundryman (1921). he so-called non-fluid irons, and should be ableto popularise certain exclusive gradesof iron. Not infrequently poor coke is the chieffactor in the cupolas failure to super-heat. Especially during the war andtimes of labor shortage and unrest, wasgood foundry coke difficult to obtain,and consequently the quality of manyiron castings suffered greatly. On theother hand, the foundries using the elec-tric furnace in series with their cupolawere to a great extent immune fromthe poor-coke pest. It can be declaredthat any coke capable of melting pie:iron or scrap in the
. Canadian foundryman (1921). he so-called non-fluid irons, and should be ableto popularise certain exclusive gradesof iron. Not infrequently poor coke is the chieffactor in the cupolas failure to super-heat. Especially during the war andtimes of labor shortage and unrest, wasgood foundry coke difficult to obtain,and consequently the quality of manyiron castings suffered greatly. On theother hand, the foundries using the elec-tric furnace in series with their cupolawere to a great extent immune fromthe poor-coke pest. It can be declaredthat any coke capable of melting pie:iron or scrap in the cupola sufficientlyfor it to be transferred to an electricfurnace can be used with impunity in theduplexing process, because its short-comings are set right in the electric fur-nace. However, it must not be forgot-ten that good coke is always desirablefor the duplexing process, because cokeis cheaper than electricity, every extradegree of heat gained in the cupola bs-(Continued on page 44) October, 1921 CANADIAN FOUNDRYMAN 43. Do You Know the Historyof Your Facings? Hamilton Facings have a history of thirty years; in other words when you buyHamilton Facings you buy our thirty years manufacturing experience. Wehave been Canadian Manufacturers io: thirty years and we know the require-ments of the Canadian Foundrymen. As a result of this thirty years experi-ence we can guarantee that we have a grade for every requirement and thatevery barrel contains high quality and uniformity. As Canadian Manufactur-ers we sell direct to Canadian Manufacturers and you have, therefore, an op-portunity to obtain unusual quality at unusual prices. Climax Silver Lead for medium and lighter grades of will brush on the mold. It is soldat a moderate price, and invari-ably proves its worth at thefirst trial. Imperial Plumbago In constant use among foundrymen for thirtyyears for making stove plate and or-namental work of every kind. XXX Ceylon Pure Ceylon Plumbago for use onthe heaviest green
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
