The SPHC molten steel was selected for carrying out the test of casting process by directly blowing argon upward from the argon station.After that,these measures such as formulat-ing the production organization time reference table and determining the process test flow,adding the element of Mn twice by controlling its amount of addition,determining the weight of adding a section of aluminum wires according to the content of oxygen at the end point,setting the reference temperature drop as 4 ℃/mini for argon blowing from the argon station and carrying out the supple-menting and correcting for the moving-out temperatures of argon from the argon station according to the temperature drop of 0.7 ℃/min were taken.So based on testing of casting 14 tanks of molten steel by casting two times,the tested results demonstrated that the qualified rate of both composi-tions and temperatures was 100％.Finally,the production interval was normal and the casting ma-chine was operating in the stable condition and the cost of testing tanks of molten steel reduced by about 156 thousand yuan.
关键词
炼钢/氩站直上浇注/SPHC钢种/Mn含量/Als含量/钢水温度
Key words
steelmaking/directly blowing argon upward from argon station/SPHC steel/con-tent of Mn/content of Als/temperature of molten steel
维普
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