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前言为推广使用化肥工业用12SiMoVNb新钢种,由鞍钢钢研所、天津电焊条厂、石油化工部第二石油化工建设公司、上海化工研究院、兰州化机所、浙江化工学院、兴平化肥厂等于1974年组织了一个抗氢、氮、氨焊条试制小组。经过三年多的试验室工作和生产试用,初步试制出在400℃、320大气压下能耐氢、氮、氨介质腐蚀,具有综合机械性能(σ_s≥42公斤/毫米~2、σ_b≥55公斤/毫米~2、δ_5≥18％、ψ≥50％,a_K≥10公斤·米/厘米~2)和可焊性良好的焊条。
Preface In order to promote the use of 12SiMoVNb new type of steel for fertilizer industry, the Company is jointly invested by Ansteel Steel Institute, Tianjin Welding Electrode Factory, No. 2 Petrochemical Construction Company of Ministry of Petrochemical Industry, Shanghai Chemical Industry Research Institute, Lanzhou Chemical Machinery Institute, Zhejiang Institute of Chemical Technology, Xingping Fertilizer The factory was equal to 1974 organized a trial group of hydrogen, nitrogen, ammonia electrode. After more than three years of laboratory work and production trial, preliminary trial production of 400 ℃, 320 atmospheres resistant to hydrogen, nitrogen, ammonia medium corrosion, with comprehensive mechanical properties (σ_s ≥ 42 kg / mm ~ 2, σ_b ≥ 55 kg / Mm ~ 2, δ_5≥18%, ψ≥50%, a_K≥10 kg · m / cm ~ 2) and electrode with good solderability.