. In terms of heat treatment energy structure, priority is given to primary energy; waste heat and waste heat are fully utilized; processes with low energy consumption and short cycles are used instead of processes with long cycles and high energy consumption. At the same time, heat treatment is a major energy consumer and a major polluter in the machinery industry. formed in the heat treatment process Noise and electromagnetic radiation will pollute the environment.
Non-oxidation heat treatment: By using protective atmosphere heating instead of oxidizing atmosphere heating to precise control of carbon potential and nitrogen potential, the performance of parts is improved after heat treatment, and heat treatment defects such as decarburization and cracks are greatly reduced. Energy-saving heat treatment: Scientific production and energy management are the most potential factors for the effective use of energy. Solving the environmental pollution problem of heat treatment and implementing clean heat treatment (or green heat treatment) is one of the development directions of heat treatment technology in developed countries.
The quality of heat treatment is directly related to the quality of subsequent processing and ultimately affects the performance and life of parts. Vacuum heating gas quenching, vacuum or low-pressure carburizing, nitriding, nitrocarburizing and boronizing can significantly improve quality, reduce distortion and increase life. In order to reduce the emissions of SO2, CO, CO2, dust and coal slag, the use of coal as fuel has been basically eliminated, and the use of heavy oil is becoming less and less. The finishing allowance after heat treatment is reduced, which improves material utilization and machining efficiency.
The optimization of the buer structure and the strict control of the air-fuel ratio ensure that the NOX and CO are reduced to a minimum under the premise of reasonable combustion; gas carburizing and carbonitriding are used And vacuum heat treatment technology replaces salt bath treatment to reduce the pollution of waste salt and CN-containing toxic substances to water sources; uses water-soluble synthetic quenching oil to replace part of quenching oil, and uses biodegradable vegetable oil to replace part of mineral oil to reduce oil pollution.
Precision heat treatment: Precision heat treatment has two meanings: on the one hand, it is based on the use requirements, materials, and structural dimensions of the parts, using physical metallurgy knowledge and advanced computer simulation and testing technology to optimize the process parameters to achieve the required Performance or maximize the potential of the material; on the other hand, the stability of the optimized process is fully guaranteed, and the product quality dispersion is very small (or zero) and the heat treatment distortion is zero.
The establishment of a professional heat treatment plant to ensure full-load production and give full play to equipment capabilities wheel bearing kit manufacturers is the choice of scientific management. In recent years, with the progress of science and technology and its application in heat treatment, the development of heat treatment technology is mainly reflected in the following aspects: (1): Heat treatment: waste water, waste gas, waste salt, dust, dust, etc. The waste heat utilization of the combustion fuace has reached a high level. Most people switch to light oil, and natural gas is still the most ideal fuel