Manufacturing method of roller
A manufacturing method and roll technology, which is applied in the field of steel rolling, can solve the problems of low roll hardness and low roll alloy content, and achieve the effects of improving hardness and matrix strength, increasing strength, and improving wear resistance
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[0016] The steps are:
[0017] A. The roll ring is produced by centrifugal composite casting, including pouring the molten steel on the outer layer of the roll ring on a centrifuge that maintains a constant centrifugal speed. The first layer of molten steel is mixed with the outer layer of incompletely solidified molten steel; after all the pouring is completed, the heat treatment of the roller ring includes: annealing, quenching and tempering;
[0018] B. The roll core is produced by forging, and the forged roll core is subjected to post-forging heat treatment, quenching and tempering treatment and finishing treatment, so that the size of the roll core and the inner hole of the roll ring are interference fit;
[0019] C. The rolls are combined into one body through the interference fit between the roll core and the inner hole of the roll ring.
[0020] Wherein, the thickness of the outer layer of the roll ring is increased by 12% to 19% on the basis of the thickness of the w...
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