SKF bearings directly related to the subsequent thermal processing quality, which ultimately affect the performance and life of parts, bearing large-scale production of heat energy consumption and pollution. Bearing heat treatment equipment heat directly affects the quality of SKF bearings, as well as energy consumption and pollution. In recent years, as technology, heat treatment technology trends progress in the following areas:
(1) Clean the heat treatment of waste water, waste gas, waste salt, oil, and the formation of electromagnetic radiation and other environmental pollution. Solution heat treatment of environmental pollution, cleaning heat treatment (heat treatment or green) to achieve a direction of heat treatment technology. This atmosphere heat treatment, quenching oil, cleaning equipment, made high demands.
(2) Fully optimized precision heat treatment process to ensure product quality stability and achieve scattered small (or zero), heat distortion to zero to reduce the grinding allowance increase productivity, save material. For precise heat treatment must have good temperature uniformity, temperature control accuracy and good cooling quenching agent and stability. Precision SKF bearings, in order to achieve the overall quenching and heat treatment induction hardening can be taken two ways.
(3) the use of new energy-saving insulation materials, heat treatment equipment to improve energy efficiency; optimize heat treatment processes, improve process yield, full equipment capacity. At this stage of SKF bearings manufacturers are doing, such as full use of waste heat experiments, heat, some manufacturers have used forged ball bearings SKF thermal annealing, low energy consumption, short process cycle replacement cycle is long, energy consumption processes; under Bayesian body hardening process to some extent, and in a range of shorter bainite hardening process, instead of a long cycle, energy consumption and carburizing.
(4) less non-oxidizing atmosphere using a heating heating heating alternative to the oxidation of carbon, nitrogen potential for precise control of the controlled atmosphere heat protective atmosphere, heat treatment section to improve performance, such as thermal oxidation defects, decarburization, crack greatly reduced, After finishing reduce heat, improve material utilization and the amount left mechanical efficiency. Plus high-temperature vacuum hardening, vacuum or low pressure carburizing, nitriding, nitrocarburizing and Boronizing etc. can significantly improve part quality and reduce distortion, and increased life expectancy.
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