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The production line of protective atmosphere roller bottom salt bath quenching furnace is mainly used for austempering of large and medium-sized bearings, such as metallurgical bearings, rolling mill bearings, railway bearings, etc., or salt bath martensite classification quenching.

 

Operation mode

 

The bearing parts are placed on the feeding table, and automatically enter the roller heating furnace according to the cycle. After heating to the temperature (about 850 ℃) according to the process requirements, the following options are selected according to the process requirements: nitrates martensite graded quenching and tempering or bainite isothermal quenching. After the completion of the process, clean, dry and discharge the materials.

 

Way of composition

 

The heat treatment production line of roller hearth furnace with nitrogen based protective atmosphere is generally composed of roller feeding platform, front cleaner, roller hearth heater, lifting salt bath quenching tank, salt bath isothermal tank, rear cleaner, (double-layer air isothermal furnace), air cooling platform and unloading platform

 

Heating mode:

 

Full electric heating or electric compound heating