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Vacuum Heat Treatment Furnace

Vacuum Sintering Furnace

Vacuum Brazing Furnace

Bearing Industry’s Demand For Heat Treatment Equipment

Bearing heat treatment is directly related to the subsequent processing quality, which ultimately affects the performance and life of parts. At the same time, bearing heat treatment is also a major energy consumer and polluter in bearing manufacturing. The heat treatment equipment of the bearing directly affects the heat treatment quality of the bearing, as well as energy consumption and pollution. In recent years, with the advancement of science and technology, the development trend of heat treatment technology is mainly reflected in the following aspects:

(1) Clean heat treatment. The waste water, waste gas, waste salt, waste oil and electromagnetic radiation formed by heat treatment will cause pollution to the environment. Solving the problem of environmental pollution in heat treatment and implementing clean heat treatment (or green heat treatment) is one of the development directions of heat treatment technology. This places high demands on the heat treatment atmosphere, quenching oil and cleaning equipment.

(2) Precision heat treatment. Precision heat treatment is to fully ensure the stability of the optimized process, achieve a small (or zero) product quality dispersion, zero heat treatment distortion, reduce grinding allowances, improve production efficiency, and save materials. To achieve precision heat treatment, it is necessary to have good furnace temperature uniformity, temperature control accuracy, and good cooling and stability of the quenching agent. To achieve the precision heat treatment of bearings, there are two ways of overall quenching and induction quenching.

(3) The energy-saving heat treatment selects new thermal insulation materials to improve the energy utilization rate of heat treatment equipment; optimizes the heat treatment process, increases the process output, and gives full play to the capabilities of the equipment. At this stage, all bearing manufacturers are doing experiments in this area, such as making full use of waste heat and waste heat, and some manufacturers have used forging waste heat to spheroidize annealing bearing parts; adopting low energy consumption and short cycle process instead of long cycle and large energy consumption The lower bainite quenching process, to a certain extent and within a certain range, replaces the long-cycle and energy-intensive carburizing process with a shorter bainite quenching process.

(4) Less and no oxidation heat treatment: The performance of the parts after heat treatment is improved, and the heat treatment defects such as oxidation, decarburization and cracks are greatly reduced. , the finishing allowance after heat treatment is reduced, and the utilization rate of materials and machining efficiency are improved. Vacuum air quenching, vacuum or low pressure carburizing, nitriding, nitrocarburizing and boronizing can significantly improve the quality of the workpiece, reduce distortion and increase life.