我厂原有六座罩式退火炉,原设计主要用于碳结钢板及其他钢板退火,燃料全部采用煤气。经多年生产实践证明,煤气加热退火炉已不适应生产发展的要求。主要原因在于,它用于处理一般碳结钢还可以,但处理刹车片、406、及马氏体型不锈钢等,因脱碳不合格,其质量不能满足用户要求。其次,原罩式炉为适应煤气加热需要,在炉台设有烟道,同时炉子外罩密封不严,使得大 I plant the original six bell-type annealing furnace, the original design is mainly used for carbon steel and other steel annealing plate, the fuel used in all gas. After years of production practice has proved that gas-fired annealing furnace has not adapted to the requirements of the development of production. The main reason is that it can be used to deal with the general carbon steel, but the brake pads, 406, and martensitic stainless steel, because of decarburization failed, the quality can not meet user requirements. Second, the original cover-type furnace to meet the needs of gas heating, the furnace has a flue, while the furnace cover is not strict, making large