march 13, 1951 f. gelbman 2,544,752 . process for making lightweight aggregates using fragile nodules filed june 10, 1949' fame f550 5w ram/v4 dz-vice inventor mw ...

Understanding Cast Irons - Ductile Iron . ... also referred to as nodular iron or ... The high C and Si content of ductile iron provide the casting process ...

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Recent development of ductile cast iron production technology in ... for making castings for some of ... by the trace elements Pb and Sb existed in raw materials.

Ductile iron, also known as ... nodular cast iron, ... In ADI, the metallurgical structure is manipulated through a sophisticated heat treating process.

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Grey Iron vs. Nodular Iron. ... flakes of graphite which develop during the cooling process. ... properties that make it an ideal materials for mechanical and ...

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Cast irons in grades 20 and 30 are the materials most ... it is possible to adjust the chemistry and the iron making process to ... (nodular) iron. Ductile iron ...

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PROCESS FOR MAKING LIGHTWEIGHT AGGREGATES USING FRAGILE NODULES Filed June 10, 1949' Fame F550 5w ram/v4 DZ-VICE INVENTOR MW A766 F 4am ATTO R Y Fatenteci Mar. 13,

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A process for the production of nodular cast iron is disclosed. The process comprises adding magnesium to molten iron and then desulphurizing the melt. Next, the melt ...