What slewing bad heat problem

Slewing ring in the production process, heat treatment is very important, if not well controlled temperature will directly affect the product problems. Heat treatment technology would be so handled problem then?
If the heat treatment temperature is too high will reduce the process of slewing toughness and the fight against sexual. Temperature is too low, there will be cause slewing crack problems, low wear resistance, it will directly affect the life issues. If the heat treatment handled properly, can lead slewing Backing bearings surface decarburization, deformation and other issues, so that in the production of slewing heat treatment process is very important