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一、前言熔炼铸钢时加铝的目的是为了脱氧,防止热裂和细化晶粒。但加铝过多,有时又易产生脆性断口缺陷。为获得优质铸钢件,确定适宜加铝量极为重要。鉴于目前国内外对铸钢用铝终脱氧,以及增加终脱氧加铝量方面的观点不一,尤其是近来国内主张铸钢不宜用铝终脱氧的观点较为盛行,因此,本文综合国内外研究与实践,综合阐述铝对铸钢件质量的影响,以期正确评价铝在铸钢生产中的重要作用。
I. INTRODUCTION The purpose of adding aluminum when melting cast steel is to deoxidize and prevent the thermal cracking and grain refinement. However, too much aluminum, and sometimes easy to produce brittle fracture defects. In order to obtain high-quality castings, it is extremely important to determine the appropriate amount of aluminum. In view of the current domestic and international research on the ultimate deoxidation of aluminum for cast steel and the increase of the final deoxidized aluminum content, especially the recent domestic assertion that the cast steel should not be used aluminum final deoxidation is more prevalent, therefore, this paper combines domestic and foreign research and Practice, comprehensively expounded the impact of aluminum on the quality of castings, in order to correctly evaluate the important role of aluminum in the production of cast steel.