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前言冶金部的工人阶级高举毛泽东思想伟大红旗,遵照毛主席“独立自主、自力更生”的伟大教导,试制成功了利用我国富有资源且不含镍、铬元素的新型—70℃低温用钢——09Mn2V钢。 09Mn2V钢的焊接在我国还是第一次。目前国外低温用钢的焊接材料均含有较高的镍、铬等元素。毛主席教导我们:“我们不能走世界各国技术发展的老路,跟在别人后面一步一步地爬行。”“打破洋框框,走自己工业发展道路”。遵照毛主席这一伟大教
Preface The working class of the Ministry of Metallurgy held high the great red banner of Mao Zedong Thought and followed the example of Chairman Mao’s “great independence and self-reliance.” The successful trial made successful use of the new -70 ℃ low temperature steel, 09Mn2V steel, which is rich in resources and free of nickel and chromium. . 09Mn2V steel welding is the first time in our country. At present, foreign low-temperature steel welding materials contain high nickel, chromium and other elements. Chairman Mao taught us: “We can not follow the old road of technological development in various countries in the world and crawl step by step behind others.” “Breaking the Western Framework and Taking Our Own Industrial Development Path.” Follow Chairman Mao’s great teaching