AFS Library


Journal: AFS Transactions Vol. 75, (1967) pages 316-320 Modern Casting Vol. 52, No. 4, (October 1967) pages 88-92
Author: S. C. Clow (Tech. Director, James B. Clow & Sons, Coshocton, Ohio)

The article discusses many of the raw materials available to the melter along with the advantages and limitations of each. In many respects this information is applicable to other melting methods, however, the emphasis is directed toward raw materials for cupolas and is limited to metallic raw materials. Pig Iron: (1) Blast Furnace Pig Iron which gives a high silicon level tends to produce higher levels of manganese, chromium and vanadium. (2) Primary Pig Iron - Not Blast Furnace can provide very low silicon and manganese levels important in some kinds of ductile iron production. Auto Steel Scrap: (1) Selected components, example: wheels or cut frames, are very low in phosphorus copper and chromium. (2) Bundled No. 2 Steel is not used extensively in cupolas. (3) No. 2 Automotive Slab have smaller pieces and might be cleaner than bundles. (4) Shredded or fragmented steel shows a metal analysis directly proportional to the amount of stripping prior to fragmentization. Other Steel Scrap: (1) Structural Steel from bridges have a high phosphorus level. (2) Steel punchings can be used up to 30%. (3) Electrical sheet croppings are high in silicon. (4) Foundry Steel and Cut Rails are premium material. (5) Future Cut Car Sides are relatively high in copper, Nickel and chromium because they are being made of various proprietary high strength steels. Cleaned motor blocks, Drop broken machinery cast are sources of fine scrap. Briquetted borings success is directly proportional to the condition of the briquettes. Coated material contain troublesome lead in terneplate. Galvanized steel is good but Enameled scrap cause tramp elements.

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