湖南冶金
湖南冶金
호남야금
HUNAN METALLURGY
2001年
2期
20-23
,共4页
20#碳钢%管坯%连铸%质量
20#碳鋼%管坯%連鑄%質量
20#탄강%관배%련주%질량
通过对钢液凝固时其气泡和非金属夹杂的形成机理分析,以及中间包内钢水流动数学模型研究,发现中间包的结构与操作对 20#连铸管坯质量具有较大影响。因此,对其结构与操作进行了改进:改善结构,以减少钢水冲击,提高钢水滞留时间,均匀钢水质量;改进钢水流入、流出操作,避免钢流与空气的直接接触,减少二次氧化;降低连铸时的钢水过热度,通过这些措施,20#钢管坯的质量取得了显著提高。
通過對鋼液凝固時其氣泡和非金屬夾雜的形成機理分析,以及中間包內鋼水流動數學模型研究,髮現中間包的結構與操作對 20#連鑄管坯質量具有較大影響。因此,對其結構與操作進行瞭改進:改善結構,以減少鋼水遲擊,提高鋼水滯留時間,均勻鋼水質量;改進鋼水流入、流齣操作,避免鋼流與空氣的直接接觸,減少二次氧化;降低連鑄時的鋼水過熱度,通過這些措施,20#鋼管坯的質量取得瞭顯著提高。
통과대강액응고시기기포화비금속협잡적형성궤리분석,이급중간포내강수류동수학모형연구,발현중간포적결구여조작대 20#련주관배질량구유교대영향。인차,대기결구여조작진행료개진:개선결구,이감소강수충격,제고강수체류시간,균균강수질량;개진강수류입、류출조작,피면강류여공기적직접접촉,감소이차양화;강저련주시적강수과열도,통과저사조시,20#강관배적질량취득료현저제고。
Through analyzing formative mechanism of bubbles and nonmetallic inclusions during the course of melted steel solidifying and reseaching into the flow of liquid steel in tundish by a mathematic model,it is shown that the structure and operation of the tundishes plays an important part of quality for the 20# carbonsteel's products.So some measures are taken as follow: Making better the tundish structure,to decreasing wallop of liquid steel,to lengthen the staying time of liquid steel,to uniformize the liquid steels.Improving the influent and effluent operation of liquid steels,to avoid liquid steel's getting in touch with air,to decrease their second oxidation.Reducing excessive temperature during continuous casting.After above measures being taken,it is remarkably advanced for qualities' grade of 20# carbonsteel.