喷枪是喷射冶金生产装置中的关键部件。其使用条件苛刻,耐火性能要求高,在国外,其生产工艺是一项专利。齐齐哈尔钢厂从瑞典引进的SL喷射冶金装置,在投产初期是用国外进口的喷枪生产的,价格昂贵,每支枪要花1000美元外汇,平均使用寿命只有10次。后来该厂改用国产粘土质袖砖代替,寿命只有1次,远不 Spray gun is a key component of the jet metallurgical plant. Its harsh conditions of use, high fire resistance requirements, in foreign countries, its production process is a patent. The SL injection metallurgical plant imported from Sweden by Qiqihar Steel Mill was produced at the early stage of production with a spray gun imported from abroad, which is expensive. Each gun costs US $ 1,000 for foreign exchange and the average service life is only 10 times. Later, the plant instead of domestic clay brick instead of life, life is only 1, far