77B盘条生产工艺研究与质量分析  

Production process research and quality analysis of 77B wire rod

作　　者：张春燕[1] 冯运莉[2] 张晓光[1] 陈兴伟[1] 李毅平[1] 

机构地区：[1]唐山钢铁集团有限责任公司,河北唐山063016 [2]河北理工大学,河北唐山063009

出　　处：《金属制品》2010年第3期48-51,共4页Metal Products

摘　　要：介绍77B盘条的生产工艺。转炉冶炼实施高拉碳,LF炉精炼采用较低碱度(2.0左右)稀薄渣,实施钢水窄成分控制,连铸采用全程保护浇注,采用二冷配水制度,稳定连铸拉速(1.7～2.3 m/min):控制波动范围±0.1m/min,1 000～1 050℃低过热度浇钢,980～1 020℃低温开轧,吐丝温度控制在850～870℃,辊道初始速度为0.8m/s。唐钢生产的φ8.0 mm的77B盘条,抗拉强度为1 605～1 660 MPa,延伸率4%～5%,断面收缩率32%～38%,产品可满足用户的使用要求。To introduce production process of 77B wire rod. Catch carbon practice was carried out while adopting converter smelting. Low basicity about 2.0 to dilute thin sediment when LF furnace was refining, to carry out molten steel narrow ingredient control, whole course protecting casting while continuous casting, to stabilize continuous casting velocity （from 1.7 to 2.3 m/min）by adopting secondary cooling water principle, to control fluctuating scope within ± 0.1 m/min, low superheat casting from 1 000 ℃ to 1 050 ℃ , low temperature rolling from 980 ℃ to 1 020 ℃ , wire rod laying temperature controlled from 850℃ to 870 ℃ ,roller initial speed 0.8 m/s. Tensile strength of diameter 8.0 mm 77B wire rod produced by Tangsteel is from 1 605 MPa to 1 660 MPa, percentage of elongation is from 4% to 5%, area reduction is from 32% to 38% , product can satisfy using requirement of customers.

关 键 词：77B盘条 电磁搅拌 控制轧制 控制冷却 

分 类 号：TG335.63[金属学及工艺—金属压力加工]