Restoration method for mold fractures

Abstract

The invention discloses a restoration method for mold fractures. According to the method, the fractures are divided into two types according to the width and the depth of the fractures, wherein the width of the fractures of the type a is between 0.5 mm and 3 mm, and the depth of the fractures of the type a is between 1 mm and 5 mm; the width of the fractures of the type b is 3 mm or above, and the depth of the fractures of the type b is 5 mm or above; and according to the size of the fractures, restoration is performed according to the restoration method for the fractures of the type a and the restoration method for the fractures of the type b. By means of the restoration method, the large fractures with the width of 0.5 mm or above and the depth of 1 mm or above can be restored.

Description

technical field [0001] The invention belongs to the technical field of mold repair, and specifically relates to a method for repairing mold cracks by combining manual electric arc and laser composite. Background technique [0002] my country's mold industry has developed rapidly in recent years and has become the third largest mold producer in the world after Japan and the United States. Compared with foreign advanced mold production levels, my country's mold industry still has a big gap, mainly in the aspects of long manufacturing cycle, low manufacturing precision, and short mold life. Among them, the problem of short mold life is particularly prominent, which directly leads to waste of resources. and rising production costs. Therefore, the use of modern high-tech technology to repair and reuse failed molds, prolong the service life of molds, and restore unnecessary losses in production will greatly promote the development of industry and the national economy, which has si...

AI Technical Summary

Problems solved by technology

For large cracks with a width of 0.5 and a depth of more than 1 mm, manual TIG wire filling is usually used to repair them. However, due to the slow cooling rate, the grains of the weld structure are coarse, and there are a lot of hard carbonization in the weld structure. material, resulting in high brittleness and low strength in the weld area, which is prone to cracking under the action of thermal fatigue stress, and the scouring and adhesion during casting will cause brittle peeling of the weld surface, forming pits, resulting in mold failure secondary failure

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