Production method of large high chromium steel cold roll blank
A production method and technology of cold rolling rolls, which are applied in the production and manufacturing of roll billets in the metallurgical industry, can solve the problems of reducing production costs, increasing deformation, and high production costs, and achieve the effect of strong operability and advanced technology
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[0087] Example 1: The single weight of MC3 steel ingot is 13.2 tons, and the diameter reaches Φ1040mm / 890mm→the single weight of the roll billet is 7 tons, the diameter of the rough roll body reaches Φ660mm, and the roll body diameter of the finished roll billet reaches Φ630mm; the deformation process is: the first fire pressing pliers , then return to the furnace for heating, and the holding time is 3 hours; the second fire is upsetting, upsetting to 1 / 2 of the original height of the ingot, and then returning to the furnace, and the holding time is 3 hours; the third fire is long, and the relative feed amount is controlled at 0.5~0.6, pull out to 900×900mm square intermediate billet, then return to the furnace, the holding time is 3 hours; the fourth fire upsetting, upsetting to 1 / 2 of the original height, and then return to the furnace, the holding time is 3 hours; After the fifth fire, the round intermediate billet lengthened to Φ770mm is drawn back to the furnace, the relat...
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