Roll processing method suitable for improving forging penetration and shortening heat treatment period
A processing method and roll technology, applied in the field of roll processing, can solve the problems of unbalanced roll structure, high proportion of production cost, high surface hydrogen content, etc., and achieve the effect of low carbide level, shortened heat treatment cycle, and uniform internal and external structure
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[0038] The present invention will be further described in conjunction with specific embodiment now.
[0039] A roll processing method suitable for improving forgeability and shortening the heat treatment cycle, which sequentially includes selecting steel ingots and blanking → forging the steel ingots to form a roll blank → heat treatment and normalizing the roll blanks → rough turning of the roll blanks → semi-finishing of the roll blanks processing.
[0040] Specifically, the forging process of the steel ingot includes: performing three times of upsetting and elongating the steel ingot to obtain a cold-rolled billet. After the first upsetting, the obtained billet is charged into the furnace for the second annealing and hydrogen expansion treatment.
[0041] The three-pier and three-pull process is used to increase the amount of deformation and refine the structure, which can improve the quality defects such as internal porosity and shrinkage cavity of the product to the grea...
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