Method for composite centrifugal casting high-chromium steel roller
A technology of centrifugal casting and high-chromium steel, which is applied in the field of composite cast steel rolls, can solve the problems of reduced roll neck strength, broken rolls, and low bonding layer strength, and achieves the goals of improving bonding strength, preventing roll breaking accidents, and reducing diffusion Effect
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[0013] The present invention will be further described below in conjunction with embodiments.
[0014] A method for compound centrifugal casting of high chromium steel rolls. A semi-steel intermediate transition layer is arranged between the high chromium working layer and the ductile iron core, and it is produced according to the following working steps:
[0015] 1) Intermediate frequency furnace smelting, the semi-steel intermediate transition layer molten steel is smelted, the melting temperature is 1500-1600℃, the weight percentage of the chemical composition of the semi-steel intermediate transition layer is: C 1.0-2.2%, Si 0.4-1.5%, Mn 0.4-1.5 %, P 0~0.1%, S0~0.03%, Cr 0~0.2%, Ni 1.0~2.0%, Mo 0.2~1.0%, the rest is Fe and unavoidable impurities.
[0016] High chromium working layer molten steel is smelted at a smelting temperature of 1500 to 1600°C. The chemical composition weight percentage of high chromium working layer steel is: C 1.0 to 1.6%, Si 0.3 to 0.8%, Mn 0.4 to 1.0%, ...
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