A Flame Straightening Process for Shearing Machine Blades

Abstract

The invention belongs to the technical field of metallic material processing technologies and particularly relates to a flame straightening process for a cutter blade, made from 9CrSi, of a plate shearing machine. The process comprises the steps of upwardly placing a flexed cutter blade on a work platform, selecting a heated region, starting to heat from a high point of a convex face, and carrying out air cooling after heating. According to the process, larger temperature difference between the convex face of the cutter blade of the plate shearing machine and a back face of the cutter blade of the plate shearing machine is generated through carrying out deformation rapid-heating on the convex face of the cutter blade of the plate shearing machine, larger temperature stress is formed, and after cooling to room temperature, the convex face is subjected to linear shortening and the back face is subjected to linear stretching, so that the flexing deformation is eliminated; the process disclosed by the invention has a good straightening effect on the cutter blade which is subjected to bending deformation due to heat treatment; the process disclosed by the invention does not need special equipment and is simple in operation, low in straightening cost and high in straightening efficiency.

Description

technical field [0001] The invention belongs to the technical field of metal material processing technology, and in particular relates to a 9CrSi material shearing machine blade flame correction process. Background technique [0002] The blade of the shearing machine is bent and deformed after heat treatment. Usually, the blade of the shearing machine is mechanically corrected by a press, but the mechanical correction has certain disadvantages: 1. The selection of the distance of the fulcrum and the position of the fulcrum for the fulcrum to be corrected by the mechanical correction of the press The choice is not easy to determine; 2. After correction, the staff needs some experience in estimating the amount of rebound, which may cause repeated corrections. Once the operation is improper, it may cause cracks in the blade of the shearing machine after correction; 3. The mechanical correction is correcting the long blade , the effect is not ideal. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] The blade of the shearing machine is bent and deformed after heat treatment. Usually, the blade of the shearing machine is mechanically corrected by a press, but the mechanical correction has certain disadvantages: 1. The selection of the distance of the fulcrum and the position of the fulcrum for the fulcrum to be corrected by the mechanical correction of the press The choice is not easy to determine; 2. After correction, the staff needs some experience in estimating the amount of rebound, which may cause repeated corrections. Once the operation is improper, it may cause cracks in the blade of the shearing machine after correction; 3. The mechanical correction is correcting the long blade When the effect is not ideal

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