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冶金部科技司等有关部门于1987年7月17日主持鉴定了宝钢初轧大剪和飞剪剪刃堆焊修复技术等3项研究成果。通过鉴定的三项成果是: 1.大剪和飞剪剪刃堆焊修复宝钢初轧厂从日本引进的2000 t大剪和189 t飞剪剪刃与国内传统的钢坯热剪剪刃不同,是用基体加堆焊刃口方法制成,故刃口堆焊层可反复修补使用,寿命大为提高,且节约大量优质合金钢,具有显著的经济效益。为使备品立足国内,在剖析引进剪刃的基础上,宝钢自行提出了焊芯成分与堆焊工艺,并与北
Metallurgical Department of Science and Technology and other relevant departments on July 17, 1987 presided over the identification of the Baosteel rolling big shear and fly shears edge repair technology and other three research results. Through the identification of the three results are: 1. Large shear and flying shear cutting edge surfacing repair Baosteel early rolling mill imported from Japan 2000 t shear and 189 t flying shear blade with the traditional billet hot shear edge is different, Is to use the substrate plus surfacing edge method, so the edge of the surfacing layer can be used repeatedly repair, life expectancy greatly improved, and save a lot of high-quality alloy steel, with significant economic benefits. In order to make the equipment based in China, on the basis of analyzing the introduction of the cutting edge, Baosteel proposed the welding core composition and welding technology by itself,