Method for reducing burr generation of double-sided shear and used for thick plate

Abstract

The invention discloses a method for reducing the burr generation of a bilateral shear and used for a thick plate. The method comprises the following steps that a horizontal distance Gap between a two-sided shear blade and a lead hammer surface of a lower shear blade edge is set, wherein the Gap is equal to (10% -11% ) *t*alpha+lambda; the installation levelness of the upper shear blade and the lower shear blade on the bilateral shear is measured and judged; after the shear blade is replaced and installed, the shear blade clearance values of three corresponding points corresponding to the dialindicator scales of the double-sided shear main drive angle dial are measured, and any two clearance values are taken as an arithmetic difference epsilon and an arithmetic difference epsilon, so thatthe levelness of the upper shear blade and the horizontal degree of the upper shear blade do not meet the requirements and need to be adjusted; chamfering processing is carried out on the side corners of the inlet side of the lower shear blade at the two sides of the bilateral shear; and chamfering and grinding treatment is carried out on the side surfaces of the upper shear blade at the two sides of the bilateral shear. According to the method, a multi-pipe neat and comprehensive improvement mode is adopted, so that the generation of the burrs is effectively inhibited, and the effect is remarkable.

Description

technical field [0001] The invention relates to the field of thick plate shearing in the metallurgical industry, and more specifically relates to a method for reducing burrs in double-sided shearing of thick plates. Background technique [0002] The finished thick plate has strict requirements and standards for its surface quality. For the common surface quality defects that are easy to occur on the shear line of the thick plate, such as: indentation, burr indentation, etc., it usually requires manual grinding with a grinder. If After grinding, if the thickness of this position is lower than the lower limit of the ordered thickness of the finished plate, the finished plate cannot meet the delivery conditions, and it can only be re-rolled after breaking the contract, resulting in a large loss. In addition, grinding is not allowed for some steel plates with relatively high surface quality requirements. If the above-mentioned defects occur, the steel plates will be directly out...

AI Technical Summary

Problems solved by technology

But the shortcoming of this device is: this device belongs to after-the-fact remedial nature, promptly the burr that has produced is brushed and purged through burr brush and tuyere blowing device, does not suppress the generation of shearing burr from essence source, In addition, the device tends to accumulate burrs at the position of the burr brush, resulting in the possibility of being pressed in later

Images