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一、前言为满足国防生产的需要,提高该产品断口质量、减少细而密的偏析线,在夹杂物方面满足氧化物≤1.5级、硫化物≤1.5级的条件进行交货组织了攻关小组进行试验研究。在上钢五厂一、二车间16吨和25吨倾动式电炉上结合生产进行了几种不同工艺试验。试验表明,电炉采用包底吹氩是行之有效的一种工艺方法。为配合包底吹氩工艺探讨夹杂物在冶炼过程中的变化及其性质,曾进行了二次试验,在冶炼的各个阶段如氧化期、精炼期、吹氩操作前、后取样,通过对试样的金相观察和定量测定选出典型的夹杂物,用扫描电镜和电子探针对其进行定性鉴别,以便进一步探讨各冶炼时期夹杂物的形状和性质的变化与工艺参数的关系,从而为
I. Foreword In order to meet the need of national defense production, improve the fracture quality of the product, reduce the fine and dense segregation line, meet the requirements of oxide ≤1.5 and sulfide≤1.5 in the inclusion order, organize the research team Experimental Research. In the steel plant five plant one, two workshops 16 tons and 25 tons tilting electric furnace combined with the production of several different process tests. Experiments show that the bottom of the furnace using argon blowing is a proven method of technology. In order to cooperate with the bottom of the package argon blowing process to explore changes in inclusions in the smelting process and its nature, has conducted a second test in all stages of smelting such as oxidation, refining, argon blowing operation before and after sampling, through the test A typical metallographic observation and quantitative determination of typical inclusions selected by scanning electron microscopy and electron probe qualitative identification of them in order to further explore the various smelting inclusions shape and nature of the changes and the relationship between process parameters,