Spraying method for pack rolled sheet parting agent

Abstract

The invention discloses a spraying method for a pack rolled sheet parting agent. The spraying method includes the steps that after a blank to be subjected to pack rolling is subjected to cogging to reach the size of 60 mm to 80 mm, the thickness of a lower blank which is milled after sizing is larger than that of an upper blank by 1 mm to 2 mm; then ring groove forming, plane milling and fillet expanding are conducted on the lower blank, and therefore a parting agent spraying groove is machined; after machining is completed, the mixed parting agent is sprayed into the parting agent spraying groove, and the whole spraying groove is filled with the thickness of the parting agent; then the lower blank obtained after the parting agent is sprayed is conveyed into a baking oven to be dried, thebaking temperature is 450 DEG C to 650 DEG C, and the baking time is 50 min to 75 min; and finally, after the parting agent is dried, the lower blank is taken out of the baking oven, the lower blank is cooled to be below 100 DEG C, and therefore the spraying work of the parting agent is completed. The spraying method has the beneficial effects that yield losses caused by head and tail arc deformation of steel sheets obtained after rolling are counteracted, the edge shearing amount is reduced, the yield and the qualification rate of the pack rolled sheets are increased, and the quality of the sheets obtained after pack rolling is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of spraying a release agent for a laminated rolling process, in particular to a spraying method for a laminated sheet release agent. Background technique [0002] With the continuous development of the steel industry, due to the demand of reduction and high-efficiency manufacturing in downstream steel industries such as construction machinery manufacturing and shipbuilding, the demand for wide thin plates with a thickness of ≤6mm is increasing year by year. Thickness tolerance, plate shape and other requirements are getting higher and higher. At present, for medium and heavy plate rolling mills, thin plates <6mm can only be produced by steckel rolling mills, but the pass rate is very low, and only specifications with a width of ≤3000mm can be produced, and it is difficult to control thickness tolerance and unevenness. The rolling mills of wide and heavy plate mills can only produce wide thin plates with ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low yield of thin plates, easy sticking and bulging of stacked thin plates, and provide a spraying method of release agent for stacked thin plates, which can improve the yield of thin plates, reduce its reject rate, and effectively Guarantee the quality of thin plate after stack rolling

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