Curve roller heat treatment technology is good or bad directly affect its performance and life

by:Waxing     2020-05-23
Heat treatment quality direct relation with the subsequent processing quality so that will ultimately affect the using performance and life of the parts, and at the same time, heat treatment and mechanical industry of large energy consumption and pollution. In recent years, with the progress of science and technology and its application in the field of heat treatment, heat treatment technology development mainly reflected in the following aspects: ( 1) Produced in the process of heat treatment: heat treatment of wastewater, waste gas, FeiYan, dust, noise and electromagnetic radiation can cause pollution to the environment. Solve the problem of heat treatment of environmental pollution, implementation of clean heat treatment ( Or green heat treatment) Is one of the developing direction of the heat treatment technology in the developed countries. To reduce SO2, O, CO2 emissions, dust and coal cinder, have put an end to coal as fuel, fewer and fewer in the use of heavy oil, diesel oil in the majority of natural gas is still the most ideal fuel. Combustion furnace waste heat utilization has reached a very high degree, and empty - burner structure optimization Fuel ratio under the premise of strict control to ensure the reasonable combustion, NOX and CO to reduce to a minimum; Using gas carburizing, carbonitriding and vacuum heat treatment technology instead of salt bath treatment to reduce FeiYan and CN - Have poison to the water pollution; With water soluble synthetic quenching oil instead of part of the quenching oil, using biodegradable vegetable oil instead of part of the mineral oil to reduce the oil pollution. ( 2) : precision heat treatment, precision heat treatment have two meanings: on the one hand, is based on the use requirements of the parts, material, structure, size and the use of physical metallurgy knowledge and advanced computer simulation and testing technology, optimization of process parameters, to achieve the required performance or maximize the potential of materials; On the other hand is fully guarantee the stability of the optimization process to achieve product quality dispersion is small ( Or zero) And heat treatment distortion is zero. ( 3) : energy saving heat treatment: scientific production and energy management is the most potential energy effective utilization factor, establishing professional heat treatment plant to ensure the full production, give full play to the equipment capacity is the choice of scientific management. In terms of heat treatment energy structure, energy choice time; Make full use of waste heat, waste heat; With low energy consumption, short cycle of process instead of the long cycle, energy consumption, etc. ( 4) : no oxidation heat treatment: by adopting protective atmosphere heating instead of oxidizing atmosphere heating to the accurate control of carbon potential, nitrogen potential controlled atmosphere heating, parts performance was improved after heat treatment, heat treatment defects such as decarburization and cracks decrease greatly, finish machining allowance reduced after heat treatment, improve the utilization rate of material and machining efficiency. Add heat quenching vacuum, vacuum and low pressure carburizing, nitriding, nitrogen and carbon altogether permeability and boriding can obviously improve quality, reduce the distortion and improve life.
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