Although chemical heat treatment processing technology is helpful to various steel products such as high-speed steel, any processing method has its advantages and disadvantages. For the finished product of chemical heat-treated Asp60 high speed steel, its advantage lies in the further improvement of relevant properties and excellent mechanical properties of Asp60 high speed steel, which can be applied in more industries and other fields. However, its defect is related to environmental problems. It is precisely because of the environmental factors involved that there are relevant regulations to stop and restrict the operation of the steel industry and mold industry.
Generally speaking, as long as it does not exceed a certain index, these industries can perform relevant work and tasks according to normal steps. About the disadvantages of various products such as chemical heat treatment Asp60 high speed steel, it is divided into two aspects. 1、 Environmental pollution caused by heat treatment. The environmental pollution caused by heat treatment is mainly reflected in the pollution of air and water. In the process of combustion and heating, after the combustion of coal, oil, liquefied gas and natural gas, SO2, CO2, NO2, CO and other waste gases will be discharged into the air, which will cause serious pollution to the air; Evaporation generated during salt bath heat treatment, such as NH3 and HCl, refrigerants used in chemical heat treatment, such as methanol, acetone and freon, and dust generated by sand blasting will pollute the air. The pollution of water resources is caused by untreated wastewater and used quenching medium. 2、 The harm of heat treatment to human health. The heat treatment process does great harm to human health, such as SO2 produced by combustion will damage human respiratory organs; Methanol and benzene vapor generated by surface and chemical heat treatment will make people dizzy, coma and die; Dust produced by sand blasting will damage lungs and cause lung disease; The waste water generated from workpiece cleaning after heat treatment will pollute residents' drinking water and endanger human health after being discharged underground; Quenching medium such as mineral oil containing cyclopropyl pyrene is a strong carcinogen, it can cause digestive tract cancer, breast cancer and bladder cancer. When induction heating, high-intensity electron radiation will cause cell necrosis, confusion of human nerve function and gene mutation; The noise generated by long-time operation of the equipment will also damage people's nervous system, psychology and hearing.
Chemical heat treatment process is a resource intensive and seriously polluted industry. The problems of high emission, high consumption, high pollution and low efficiency need to be solved urgently. More than 100 million tons of workpieces need to be heat treated every year in China, resulting in extremely serious environmental pollution. The wastewater, waste gas, dust and residue discharged from complex processes including heating, cooling and cleaning are the main reasons for environmental pollution and endangering human health.
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