由航空设计研究院、贵阳黔江机械厂及云马飞机制造厂等单位共同研制的适合航空零件进行真空热处理的大型多功能立式真空淬火电炉,已由航空航天部委托部科学技术研究院主持,于1991年5月在贵阳进行了技术鉴定。 这台工作尺寸为φ600mm×1400mm、最高工作温度为950℃、最大装炉量为200kg、极限真空度达4.8×10~(-3)pa的具有真空油淬、真空气淬和真空硝盐浴等温淬火等多种功能 The large-scale multi-functional vertical vacuum quenching electric furnace, which is jointly developed by Institute of Aviation Design, Guiyang Qianjiang Machinery Factory and Yunma Aircraft Factory, has been developed by the Ministry of Aeronautics and Astronautics, entrusted by the Ministry of Science and Technology of the Ministry of Aeronautics and Astronautics. In May 1991 in Guiyang conducted a technical appraisal. The working size of φ600mm × 1400mm, the maximum operating temperature of 950 ℃, the maximum load of 200kg, the ultimate vacuum of 4.8 × 10 ~ (-3) pa with vacuum oil quenching, vacuum gas quenching and vacuum nitrate salt bath Isothermal quenching and other functions