Rolled square billet peeling method

Abstract

The invention relates to the field of steel, in particular to a rolled square billet peeling method. The method comprises the following steps that the peeling depth of the plane part is 0.30-0.95 mm,the peeling depth of the corner angle part is less than 1.05 mm, in a peeling process, and the ratio K of the rotating speed of a grinding wheel to the speed of a trolley is 70 to 125. The surface ofthe peeled billet obtained through the peeling method of the rolled square billet is free of peeling defects such as grinding residues, residual black rust, flashes and burrs, corner transition is smooth, surface defects of a decarburized layer and cogging rolling are completely removed, the surface is free of bluing, the ratio K of the rotating speed VZ of the grinding wheel to the longitudinal travelling speed VL of the trolley ranges from 70 to 125, peeling can be carried out accurately, the ratio K of the rotating speed VZ of the grinding wheel to the travelling speed VL of the trolley iscontrolled to range from 70 to 125, the peeling efficiency can be improved, the risk of billet surface burn can be well reduced, and peeled billet surface quality is improved.

Description

technical field [0001] The present application relates to the field of iron and steel, in particular, to a rolling billet peeling method. Background technique [0002] The existing peeling process of rolled slabs generally uses a grinding wheel peeling machine for four-sided peeling treatment. Due to improper peeling processing methods and methods, there are the following problems: rolling defects and surface decarburization are not cleaned cleanly, residual black skin, continuous or intermittent There are quality problems such as grinding residues and flash burrs, deep grinding tool marks, and large corner angles. These defects caused by peeling will form surface defects such as folding and warping on the surface of the wire rod during the subsequent high-wire rolling process, which will seriously affect the surface quality of the wire rod product. These defects will seriously affect the fatigue life of the spring. For springs in service under higher strength conditions, a...

AI Technical Summary

Problems solved by technology

[0002] The existing peeling process of rolled slabs generally uses a grinding wheel peeling machine for four-sided peeling treatment. Due to improper peeling processing methods and methods, there are the following problems: rolling defects and surface decarburization are not cleaned cleanly, residual black skin, continuous or intermittent Grinding residues and flash burrs exist, deep grinding tool marks, large corner angles and other quality problems

These defects caused by peeling will form surface defects such as folding and warping on the surface of the wire rod during the subsequent high-wire rolling process, which will seriously affect the surface quality of the wire rod product. These defects will seriously affect the fatigue life of the spring. For springs in service under higher strength conditions, a little defect on the surface will also form a source of fatigue fracture, which will seriously reduce the fatigue life of the spring

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