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热处理过程中的保护加热已成为热处理技术发展的必然趋势,在空气中加热工件的数量与在保护气氛中加热工件的数量之比,已作为衡量一个国家热处理发展水平的一个重要指标。为使铁路轴承能逐步实现现代化生产,浦镇车辆工厂为客车轴承的生产研制了吸热型控制气氛密封淬火炉。但该炉由于西烷气供应困难而长期不能投入生产应用。欧美一些国家从七十年代起为应付能源
Protection heating in the heat treatment process has become an inevitable trend in the development of heat treatment technology. The ratio of the number of workpieces heated in air to the number of workpieces heated in a protective atmosphere has been used as an important index to measure the level of heat treatment in a country. In order to enable the railway bearings to gradually realize modernized production, Puzhen Vehicle Factory has developed a heat-absorbing sealed-atmosphere quenching furnace for the production of passenger car bearings. However, due to difficulties in supplying alkane gas, the furnace can not be put into production for a long time. Some European and American countries have been dealing with energy since the 1970s