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文中例举了前苏联生产的商业用真空热处理炉子(用于结构钢和电子用钢热处理)的技术参数。和气氛压力炉相比,真空炉可减少能耗20～30％,这类加热设备使用的材料包
The article cites the technical parameters of commercial vacuum heat treatment furnaces (for heat treatment of structural steels and electronic steels) produced in the former Soviet Union. Compared with atmospheric pressure furnace, vacuum furnace can reduce energy consumption by 20 to 30%, such heating equipment used material package