Heat treatment quality directly affect the service life of bearing

Heat treatment quality directly affect the service life of bearing, first to speak a little own view; 1. Heat treatment quality directly affect the service life of bearing, high temperature heat treatment result in coarse grains, easy to quenching crack exists, quenching temperature is too low, hardness can be reduced to a slightly, is the so-called less heat. 2. Tempering temperature will lead to the high hardness, better stress removal. Tempering temperature is too low, material hardness is higher, however, stress is hard to go out, so the bearing steel generally adopt the tempering temperature of 150 ~ 180. 3. Prepare heat treatment influence on bearing life, especially the spheroidizing, if you don't ideal or uneven spheroidizing, easy to cause uneven carbide concentration, when quenching ring deformation will increase a lot, and swelling or shrinking has no regularity, easy to cause a large deformation caused by the absence of scrap, 4, forging influence on bearing life, bearing manufacturer forging are bearing manufacturing the first line of heat treatment, if the forging temperature is exorbitant, coarse grains, quenching cracks easily, forging than small easy to cause uneven carbide, will also affect the quenching distortion and cracking. Forging times not easy legacy forging organization, resolutely put an end to the forging of carbide liquid chromatography were banded carbide segregation carbide will affect the final quenching process. Can be seen from the above, forging annealing hardening tempering all play a decisive role on the life of the bearing, so if you want to do a good job of bearing should control the four basic steps rather than a simple control quenching heat treatment process of heat treatment factory sometimes really ate a lot of timid hehe it is the cause of forging, but in the end are generally push to heat treatment.