A method for reducing burrs in double-sided shearing for thick plates

Abstract

The invention discloses a method for reducing the generation of burrs in double-sided shears for thick plates, comprising: setting the horizontal distance Gap=(10%-11%)*t between the plumb surfaces of the upper and lower cutting edges of double-sided shears *α+λ; Measurement and judgment of the installation levelness of the upper and lower cutting blades of double-sided shears: After the blades are replaced and installed, the clearance values ​​of the three corresponding points corresponding to the pointer scale of the main drive angle dial of double-sided shears must be measured respectively , and take any two gap values ​​as the arithmetic difference ε, the arithmetic difference ε > 0.3 ~ 0.4mm is regarded as the levelness of the upper and lower cutting blades does not meet the requirements, and it must be adjusted; the side angles of the lower cutting blades on both sides of the double-sided shears are chamfered Corner treatment; chamfering and grinding treatment is carried out on the side of the biting angle position of the cutting edge on both sides of the double shear. The present invention adopts a multi-pronged and comprehensive improvement method to effectively suppress the generation of burrs, 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