Magnetoelastic grinding burn detection method for acid-corrosion-resistant steel gear

Abstract

The invention discloses a magnetoelastic grinding burn detection method for an acid-corrosion-resistant steel gear to solve the problems that acid corrosion detection influences the size precision androughness of a gear and the defect distinguishing degree of acid corrosion detection of an existing acid-corrosion-resistant steel gear is not the same as that of a conventional steel gear. Before ato-be-detected gear part is detected, an acceptance standard calibration value and a warning value are determined according to a contrast gear part and a gear defect part, a detector is directly adopted to detect the grinding burn defect without damage during the subsequent detection of the to-be-detected gear part, and the to-be-detected gear part does not need to be subjected to acid corrosion.

Description

technical field [0001] The invention relates to the field of grinding burn detection, in particular to a magnetoelastic grinding burn detection method for acid-resistant steel gears. Background technique [0002] Grinding burn detection is one of the main means of surface grinding quality control of gear parts. The general design patterns of gear parts in the fields of aviation, spaceflight, and ships have grinding burn detection requirements. The conventional inspection method is acid etching inspection. Before the inspection, the parts are acid-etched first, and then the magneto-elastic method is used for inspection. Based on the different colors of the gears after acid-etching treatment due to the difference in surface structure, burn defects are identified and evaluated. [0003] The manufacturing research of 15Cr14Co12Mo5Ni steel gear is still in the early stage of experience accumulation. Because it can obtain excellent mechanical properties such as high strength and h...

AI Technical Summary

Problems solved by technology

However, the material is acid corrosion-resistant stainless steel, the tempering temperature of heat treatment is at least 200°C higher than that of conventional carburizing steel, and the surface structure contains more carbides, and the acid corrosion methods commonly used for gear grinding burn detection cannot cause color changes to identify defects

After years of research, an acid etching detection method to be studied and improved has been found, but the acid etching detection method has an impact on the roughness and dimensional accuracy of the gear. For precision mating surfaces or other surfaces with special requirements, acid etching detection is not necessary. Not applicable

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