Self-aligning ball bearing cage fracture surface treatment

For as long as possible in good condition to maintain the performance of the self-aligning ball bearing was required to maintenance, repair, in order to prevent accident arrangement to ensure the reliability of operation, improve the productivity and economy. To maintain the best conditions of mechanical operation of the corresponding operation standard, on a regular basis. Content includes monitor running status, supplement or replacement of lubricants, remove the check on a regular basis. As maintenance issues in the operation, the rotation of the self-aligning ball bearing the sound, vibration, temperature, the state of the lubricants and so on. Self-aligning ball bearing clean: remove the TIMKEN bearing repair, the appearance of the first record self-aligning ball bearings, confirm the residual stock of lubricant, sampling inspection with lubricant, wash the self-aligning ball bearing. Common use gasoline, kerosene as a cleaning agent. Removed the self-aligning ball bearing cleaning, rough washing and fine washing, respectively in the container, put a metal mesh bottom first, make the TIMKEN bearing is not direct contact with dirt from the container. When cleaning, if rotating the self-aligning ball bearing with dirt, can injure the rolling surface of the self-aligning ball bearing, should be pay attention to. In coarse clean oil, use a brush to remove grease, adhesive, after clean, roughly into fine cleaning). Fine cleaning, it is self-aligning ball bearing in the cleaning of oil side spin, side carefully cleaned. In addition, the clean oil is always kept clean. TIMKEN bearing cage quality that is very good, but in the daily operation self-aligning ball bearing, incorrect operation will reduce the life of the self-aligning ball bearing cage, even lead to the fracture. Here is to introduce you to introduce what are the conditions will lead to self-aligning ball bearing cage fracture? According to the materials on the relationship between the fracture toughness and other research and analysis on the development process of the crack, it is easy to see that the dn value is high and the presence of circumferential stress, surface modification of high speed steel and low carbon content of the change of the HSS surface hardening depth is of great importance. Therefore, TIMKEN material surface treatment technology is developed, can enhance the surface hardness, and compressive stress is produced. By the surface treatment of the material has the following features: has good resistance to fatigue crack, the second stage, the expansion of the existing crack speed is low and the inadequate quenching or low carbon content leads to the core of fracture toughness value of materials is relatively higher. TIMKEN development of this kind of surface treatment processing method includes: ( 1) With laser and electron beam or the method such as induction hardening less than ordinary HSS local heat treatment quenching, to get the surface hardened layer. Here it should be pointed out that hardening is insufficient in order to improve the fracture toughness. ( 2) Using chemical heat treatment method for surface hardening layer. This method include carbon or nitrogen infiltrate the common high speed steel microstructure, or small changes in carbon content.