Deep plasma nitriding process of wind gear ring

Abstract

The invention relates to a deep plasma nitriding process of a wind gear ring, characterized by slowly steppedly heating up a wind gear ring workpiece to 520 DEG C with the furnace after charging, preserving the heat for a certain time, letting ammonia in a nitriding furnace, continuing to heat up to 530 DEG C and preserving the heat for a certain time, then cooling to 510 DEG C and preserving the heat for a certain time, after finishing nitriding, slowly cooling to 150 DEG C and discharging the wind gear ring workpiece, preferably a 42CrMo wind gear ring; further, mechanical masking is used for carrying out protection treatment on the workpiece. Compared with the prior art, the process has the advantages of short period of the process, low energy consumption, high precision of quality control, and raised surface hardness, raised wear resistance and raised fatigue strength after gear ring nitriding, low distortion, and high gear precision, can be directly assembled without grinding, and can completely reach the quality technical requirements of wind gear rings.

Description

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AI Technical Summary

Problems solved by technology

The purpose of the present invention is to overcome the long period, high energy consumption and relatively large deformation of the conventional gas nitriding process for the wind power ring gear, and it is difficult to achieve heat treatment distortion, high hardness, and deep penetration by using the conventional ion nitriding process. To provide a deep ion nitriding process for wind power ring gears due to defects such as the thickness of the nitr

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