01
2023-03
How are rolls categorized by material?
Roller according to the material is mainly divided into cast iron rolls, cast steel rolls and forged steel rolls three categories. Among them, the carbon content of cast iron rolls in 2. 50/0 ~ 3.5% or so, according to the main material can be divided into cold cast iron rolls, unlimited cold cast iron rolls, high chromium cast iron rolls and ductile iron rolls four categories. Cast iron rolls in the common organization can be divided into the matrix, carburizing body, graphite three categories, the matrix organization is mainly austenite, ferrite, pearlite, bainite and martensite, graphite in the cast iron in the form of general flake and spherical two.
2023-03-01
01
2023-03
Development of high speed steel rolls
Typical high-speed steel roll metallurgical organization, by the martensite (or bainite) matrix plus high hardness MC, M2C, M6C and M7C3 and other types of carbides. Domestic research and application of high-speed steel rolls have also been reported, the General Research Institute of Iron and Steel in China took the lead in the development of high-speed steel rolls,
2023-03-01
01
2023-03
China's roll product structure still needs to be optimized
Over the years, China's roll manufacturing industry has experienced the introduction of rolling mill to develop supporting rolls, the realization of roll manufacturing localization, batch export of high-end rolls and other stages of development, has formed a complete roll manufacturing system, to become big country of roll manufacturing, and fostered the world's first roll production capacity of Sinosteel Xingji and a number of specialization advantages of the relatively obvious roll manufacturing enterprises.
2023-03-01
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