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本文叙述了冷拔不锈钢和耐热钢等无缝管用的外模、内模和镶块采用煤油加氨气为原料的气体氰化新工艺。处理后,模具渗层厚度可达0.9mm,碳氮浓度:碳1％左右,氮0.3％左右。碳氮可以分别控制,与传统的液体氰化工艺相比,提高模具寿命一倍左右,节省电耗百分之五十,成本降低三分之二,彻底解决了液体氰化造成的公害,大大改善了操作者的劳动条件。
This paper describes the cold-drawn stainless steel and heat-resistant steel seamless pipe with the outer mold, the inner mold and insert block using kerosene plus ammonia as raw material gas cyanide new technology. After treatment, the mold layer thickness up to 0.9mm, carbon and nitrogen concentration: about 1% of carbon, nitrogen, about 0.3%. Carbon and nitrogen can be controlled separately, compared with the traditional liquid cyanidation process to improve the die life about double, saving 50% power consumption, reducing costs by two-thirds, completely solve the liquid cyanide caused by pollution, greatly Improve the working conditions of the operator.