3—4千瓦小型实验箱式炉经简单改装,可实行滴注式保护气氛加热,成为多种用途的小型零件生产炉,在上海淬火厂改装成功,并为上海工业大学改装一台试用,效果较好。改装时,只要将原炉门卸下,在马弗罐内套一个耐热不锈钢制的钢罐,罐后各装一根热电偶插入管和保护液滴入管。炉门做成倾斜式,可利用炉门自重使其关闭。在门上装一排气管,有调节龙头,以控 3-4 kilowatts of small experimental box furnace by simple conversion, the implementation of drip-type protective atmosphere heating, a variety of uses for the production of small parts furnace, quenching plant in Shanghai, the successful conversion, and the Shanghai University of Technology modified a trial, the effect better. When retrofitting, as long as the original furnace door unloaded, in the muffle sleeve a heat-resistant stainless steel tank, the tank after each installed a thermocouple into the tube and the protective liquid into the tube. Furnace door made of tilt, the oven door can make use of its own weight to close. Install an exhaust pipe on the door, there are regulatory faucet to control