摘要
分析ER70S-6盘条的金相组织、夹杂物和气体元素含量,找出原生产工艺存在的问题,提出工艺改进措施：采用硅铝钡复合脱氧剂脱氧,低碳、低磷硅锰合金代替低碳锰铁合金化;准确控制成分,尽量避免LF炉大范围调整成分,提高钢水洁净度,w（S）控制在0.010%~0.020%;严格控制开轧温度（1 020~1 060℃）和吐丝温度（840~860℃）,采用斯太尔摩缓慢冷却控制技术（冷速小于1℃/s）。使用该工艺生产的盘条制成焊丝后,焊丝送丝性能好,焊接飞溅小,焊缝平整、强度高,可以满足用户的要求。
To analyze the microstructure,inclusion and gas element content of ER70S-6 wire rod produced by Tangsteel.Problems existing in original production process were found out.Process improvement measures were put forth.Si-Al-Ba compound deoxidizer was adopted to deoxidize,low carbon Mn-Fe alloy was replaced by low carbon and low phosphorous Si-Mn alloy.To control composition precisely and avoid LF furnace adjusting composition in large scope,molten steel cleanliness was improved.w（S） was controlled from 0.010% to 0.020%.Heating and rolling temperature is from 1 020 to 1 060 ℃,wire rod laying temperature is from 840 to 860 ℃,Stelmor slow cooling controlled technology was adopted（less than 1 ℃/s）.Wire feeding properties of welding wire produced by Tangsteel wire rod adopted the process are good,welding splashing is small,welding line is smooth,strength is high,which can meet requirements of customers.
出处
《金属制品》
2011年第2期53-56,59,共5页
Metal Products
