Technique for processing metallic surface

Abstract

The invention relates to a processing technology of metal surfaces, which is characterized in that rolling treatment is carried out on the metal surface by using a rolling knife and the pre-tightening force F of the rolling knife is controlled to be equal to 3.4 multiplied by M, wherein, M is the brinell hardness of the metal surfaces. The processing technology has the following beneficial effects: (1) shortening processing time: compared with the original grinding technology, the rolling technology can improve efficiency by over 10 times, and processing materials are saved and environmental pollution is reduced; (2) wear resistance and hardness of work pieces are improved due to the densification of metallographic structure; and (3) the fatigue strength of processing parts is improved by the residual compression stress on the surface.

Description

(1) Technical field [0001] The invention relates to a metal surface processing technology. (2) Background technology [0002] Existing metal surfaces are usually processed by grinding technology, which takes a long time, about 70 hours. The disadvantage of the grinding process is that it is easy to embed diamond on the metal surface, resulting in increased wear of the mating surface. [0003] At present, there have been attempts to use the rolling process to precisely process the metal surface, but the rolling process uses a rigid compression method to cause plastic deformation on the surface of the workpiece to achieve the purpose of reducing the surface roughness. The pressing force of the rolling knife cannot Setting, the amount of pressing is generally 20um ~ 40um, so that it exceeds the height of the peaks and valleys on the surface of the workpiece. After direct pressing, the surface of the workpiece exceeds the yield limit of the material, causing shelling of the su...

AI Technical Summary

Problems solved by technology

The disadvantage of the grinding process is that the metal surface is easily embedded with emery, resulting in increased wear of the mating surface

[0003] At present, there have been attempts to use the rolling process to precisely process the metal surface, but the rolling process uses a rigid compression method to cause plastic deformation on the surface of the workpiece to achieve the purpose of reducing the surface roughness. The pressing force of the rolling knife cannot Setting, the amount of pressing is generally 20um ~ 40um, so that it exceeds the height of the peaks and valleys on the surface of the workpiece

After direct pressing, the surface of the workpiece exceeds the yield limit of the material, causing the surface layer to peel off, but destroying the finished surface