High-wear-resisting electric generator shaft sleeve

Abstract

Disclosed is a high-wear-resisting shaft sleeve. The shaft sleeve is in a cylindrical shape, and a transverse oil groove is formed in the cylindrical inner surface of the shaft sleeve; the shaft sleeve comprises a copper alloy shaft sleeve body, and chemical compositions of a copper alloy comprise, by weight percent, 12.5% of Al, 9.5% of Sn, 4.5% of Fe, 2.5% of Mg, 0.85% of Mn, 0.75% of Ca, 0.55% of Zn, 0.15% of Ti, 0.075% of Y, 0.055% of Cr, 0.035% of Zr, 0.015% of Mo, 0.015% of Nb and the balance Cu and inevitable impurities. The copper-based alloy material fully meets the strength requirement of the shaft sleeve body material; and the shaft sleeve is subject to multilevel gradient carbonitriding heat treatment, the hardness and strength fatigue performance of the shaft sleeve are improved, and cracks are prevented from appearing.

Description

technical field [0001] The invention relates to a shaft sleeve of a generator with high wear resistance, belonging to the technical field of generators. Background technique [0002] In the moving parts, the rotating shaft is installed in the shaft hole, because long-term use will cause wear between the rotating shaft and the shaft hole, the shaft sleeve is usually set on the rotating shaft to protect the rotating shaft, but the rotating shaft and the shaft sleeve are matched There is also constant friction during use. At present, the method of adding lubricating oil between the shaft sleeve and the rotating shaft is used to ensure sufficient lubrication between the two and prolong the service life of the rotating shaft and the shaft sleeve. Therefore, the fatigue strength, wear resistance, strength, and hardness of the shaft sleeve have very high requirements. At present, the bearing capacity of the inner wall of the shaft sleeve is not high, which reduces the service life ...

AI Technical Summary

Problems solved by technology

Therefore, the fatigue strength, wear resistance, strength, and hardness of the shaft sleeve have high requirements. At present, the bearing capacity of the inner wall of the shaft sleeve is not high, which reduces the service life of the shaft sleeve; moreover, the processing technology is complicated and the processing efficiency is very low.

The deficiencies of the existing technology lead to the inconvenient use of the shaft sleeve during use, or the imperfect self-lubricating function. If the maintenance is not timely, it will cause serious wear and tear of the shaft and the shaft sleeve, or even scrapped.

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