High-temperature resistant and abrasion-resistant white cast iron piece and production method
A technology of white cast iron and production method, applied in the fields of high temperature resistant and wear resistant white cast iron castings and production
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[0016] The high temperature resistant and wear resistant white cast iron of the present invention adopts high carbon and high chromium as its chemical composition, and adds boron, nickel, and molybdenum elements. The analysis of the effects of its main elements in steel is as follows:
[0017] 1. Chromium Cr: The mass fraction of Cr 30-36% is an important improvement in the present invention. Cr affects the number of carbides, and the increase in Gr content can improve the distribution of carbides. In high chromium cast iron, chromium can change the type of eutectic carbides, improve the morphology of carbides, and increase material hardness and wear resistance. With the increase of chromium content, the carbide type changes from M 3 C to M 7 C 3 To M 23 C 6 Transformation, in which the ratio of chromium to carbon Cr / C, affects M in cast iron 7 C 3 The relative quantity of type carbide, when the ratio is greater than 5, most of M can be obtained 7 C 3 Type carbide. In addition ...
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