Development of Steels for Engineering Machinery Caterpillar
Ma Chuanqing (Laiwu Iron and Steel Co. Ltd., Laiwu, Shandong 271104)
Steels for engineering machinery caterpillar are used massively in the mechanical industry, which have very strict requirements on their mechanical properties. Through establishment of rigorous and reasonable production processes, optimization of electric furnace, refining and continuous casting processes, and reasonable controlling of process parameters such as the final composition of molten steel, continuous casting water distribution, casting speed and so on, metallurgical qualities of surface quality, macrostructure, non-metallic inclusions, grain size, and microstructure meet the requirements of technical conditions, and the performance indicators reach advanced domestic level.
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