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鞍钢第二炼钢厂为了寻找新的钼合金剂,决定在三百吨平炉上,采用氧化钼作合金剂冶炼55SiMnMoVNb弹簧钢.试验自1978年9月9日至15日进行,共冶炼五炉,其中三炉采用氧化钼块随料加入法,两炉采用在精炼期加入,冶炼结果表明:钼的回收率分别为91.5％; 80.0％; 90.8％; 94.3％; 80.99％.55SiMnMoVNb钢坯采用超声波探伤和低倍组织检验.检验结果表明:不论用坑缓冷还是堆垛
In order to find a new molybdenum alloy, Angang No.2 Steelmaking Plant decided to smelt 55SiMnMoVNb spring steel with molybdenum oxide as an alloying agent on a 300-ton open hearth furnace from September 9 to September 15, 1978. A total of five furnaces , Of which three furnaces with molybdenum oxide block with the addition of materials, two furnaces were added in the refining period, the smelting results show that: molybdenum recovery rates were 91.5%; 80.0%; 90.8%; 94.3%; 80.99% .55SiMnMoVNb billet using ultrasonic Flaw detection and low magnification test.Experimental results show that: whether pit slow cooling or stacking