Failure Analysis of GCr15 Steel Balls in Ball Screw Pair

被引：1

作者：

Li Chengnan ^{[1
]}

Yan Ye ^{[1
]}

Gai Yuhong ^{[1
]}

Li Baomin ^{[2
]}

Du Wei ^{[2
]}

Li Musen ^{[1
]}

机构：

[1] Shandong Univ, Key Lab, Minist Educ Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Shandong, Peoples R China

[2] Shandong Best Precis Co Ltd, Jining 272071, Shandong, Peoples R China

来源：

MATERIAL SCIENCE, CIVIL ENGINEERING AND ARCHITECTURE SCIENCE, MECHANICAL ENGINEERING AND MANUFACTURING TECHNOLOGY II | 2014年 / 651-653卷

关键词：

Steel Ball; Microstructure; Hardness; Failure Analysis;

D O I：

10.4028/www.scientific.net/AMM.651-653.24

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Based on macro morphology, metallographic microstructure, field emission scanning electron microscope observations and microhardness testing, failure analysis of the GCr15 steel balls in the ball screw pair was dealt with in this paper. The experimental results showed that small scratches and pits were evenly distributed on the surface of the A steel ball which showed features of wear failure. Characteristics of the B steel ball surface morphology were contacted to fatigue failure. Microstructure observation on the cross-section of the B steel ball showed that martensite and carbides were uneven distributed which were caused by the uneven elements distribution in the raw materials. It was the main cause of this abnormal failure. Therefore, the quality of the raw materials needed to be strictly controlled and the reasonable heat treatment process should be adopted to ensure the quality of the steel balls.

引用

页码：24 / +

页数：2

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