盾构机主轴轴承（7014-HF）失效分析报告

由金属研究所研制的稀土钢盾构机轴承（型号：7014），交由华孚公司安装于盾构机使用，以考察其使用性能。其中编号为XJ-21-001/XJ-21-003 轴承为装配在同一台盾构机上使用的一对，编号为XJ-21-002 轴承装配在另一台盾构机上使用。盾构机主轴承的常用转速约为 12000rad/s，加工一个工件的平均时长约为 10h，3 件轴承的失效情况均为使用过程中发生异响，拆下后送交失效分析中心进行解剖分析。The rare earth steel shield machine bearing (model: 7014) developed by the Institute of Metal Research was delivered to Huafu Company for installation on shield machines to evaluate its service performance. The bearings designated XJ-21-001/XJ-21-003 form a pair installed on the same shield machine, while the bearing designated XJ-21-002 was installed on another shield machine. The typical operating speed of the shield machine main bearing is approximately 12,000 rad/s, and the average processing time per workpiece is about 10 hours. All three bearings exhibited abnormal noise during operation as their failure mode; they were removed and sent to the Failure Analysis Center for dissection and failure analysis.

搜集汇总

背景与挑战

背景概述

该数据集总结了盾构机主轴轴承（型号7014-HF）的失效分析报告，涉及三件稀土钢轴承在实际使用中的性能考察。关键信息包括轴承在常用转速约12000rad/s、平均加工时长10小时的条件下使用，失效现象均为出现异响，随后送交进行解剖分析，旨在评估其使用性能和失效原因。