There are a lot of production bearing manufacturing process, including technical compare strong is bearing the heat treatment, whether it is or the overseas import bearing manufacturing, or domestic bearing manufacturing, is inseparable from the heat treatment process. Bearing
(1) clear heat treatment
Heat treatment of the formation of the production waste water and gas, FeiYan, dust, noise and electromagnetic radiation etc all can cause to the environment pollution. Heat treatment to solve problems of environmental pollution, and implement clean heat treatment (or says the green environmental protection heat treatment) is the developed countries heat treatment technology and its development direction of one. To reduce SO2, CO and CO2, dust and slag discharge, has basically eliminate our use of coal as fuel and the usage of the heavy oil and less, convert light oil are, natural gas, is still the most ideal fuel. Furnace of waste heat utilization has reached a high degree, burner optimization and empty fuel-than the strict control of guarantee reasonable under the premise of burning, NOX and CO reduced to the minimum; Use gas carburizing, carbon and nitrogen were permeability and vacuum heat treatment technology substitution treatment to reduce salt bath FeiYan and contain CN-have poison for water pollution; The water-soluble synthesis quenching oil instead of quenching oil, use of biodegradable vegetable oil to replace some mineral oil to reduce oil pollution.
(2) precision heat treatment
Precision heat treatment both meaning:
On the one hand the use requirement according to parts, materials, structure size, the use of physical metallurgy knowledge and advanced computer simulation and testing technology, the optimization of process parameters, achieve desired performance or maximize the potential of materials;
On the other hand is fully guarantee the stability of the optimization of process, and realize the product quality dispersion small (or zero) and heat treatment for zero. Distortion
(3) energy saving heat treatment
The scientific production and energy management is the most effective use of the energy potential factors, establish professional hot treatment plant to ensure full load production, give full play to the equipment ability is the choice of scientific management. In terms of energy structure, heat treatment priority a energy; Make full use of waste heat, waste heat; The low energy consumption and short cycle technology instead of cycle is long, energy consumption of technology and so on.
(4) less without oxidation heat treatment
By using alternative protective atmosphere heating oxidation atmosphere heating to precise control carbon potential, nitrogen atmosphere heating, the potential controllable after heat treatment of parts performance improved, heat treatment, defect such as decarburization, crack, greatly reducing, heat treatment finishing a decrease, improve material utilization ratio and machining efficiency. Vacuum add heat quenching, vacuum or low voltage cementite, permeability nitrogen, carbon and nitrogen of permeability boronizing can obviously improve the quality and reduce distortion, improve life.