我們鍛压車間用的加热爐都是燃煤的火焰反射炉,爐门很沉重。1吨錘、半吨錘用的那些爐,因为鍛的活儿小,爐門要經常开启,一班总要在百來次左右。2、3吨錘用的那些大爐虽然开启次数少,但是爐门重,而且都是双室的,所以开关爐門很費力,开两个爐門还得来回走。为了减輕开关爐门的劳动强度,以便进一步提高生产效率,鍛冶科同志們研究设計了一个爐門风动提升装置,并且已經試驗成功,很受工人同志欢迎。开关 The furnaces used in our forging plant are coal-fired flame reverberatory furnaces, and the furnace doors are heavy. For those furnaces with 1 ton of hammers and half ton of hammers, because the work of forging is small, the doors of the furnace must be opened frequently, and the shifts must always be about 100 times. Although the large furnaces used for the 3 ton hammers have a small number of openings, the furnace doors are heavy and they are double-chambered. Therefore, the opening and closing of the furnace door is very laborious and the two furnace doors have to be moved back and forth. In order to reduce the labor intensity of the switch door, in order to further improve production efficiency, Comrades of the Forge and Metallurgical Institute studied and designed a pneumatic lifting device for the door, which has been successfully tested and is very popular with the workers. switch