Cold roll bulk heat treatment process
A technology of integral heat treatment and cold rolling, applied in the field of cold rolling rolls, can solve the problems of insufficient uniformity of roll body hardness and short service life, and achieve the effects of good plasticity, increased service life and good medium temperature performance
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[0029] A kind of integral heat treatment process of cold rolling roll, comprises the steps:
[0030] (1) Select the steel ingot raw material of 60CrMnMo;
[0031] (2) Use the loading machine to put the steel ingot raw material on the operation platform to cut the outer surface;
[0032] (3) Forging the raw steel ingot on the operating table into a roll blank with a roll body diameter of 500-600mm and a roll body length of 2500-3000mm;
[0033] (4) Process a roll neck with a diameter of 50-60mm and a length of 30-50mm at the center of both ends of the roll blank;
[0034] (5) Put the billet into the furnace for normalizing annealing. During the spheroidizing annealing process, after heat preservation at about 790 ° C, the carbides in the fine flaky pearlite are easily fused from the middle and distributed in the uneven In the austenite, a large number of diffusely distributed carbide points are formed: after slow cooling, the austenite continues to precipitate carbides, and t...
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