预应力钢绞线用大规格82B盘条冬季时效期的系统控制
|
摘要
针对目前业界广泛存在的大规格82B时效期较长的问题,结合河钢集团宣钢公司高速线材生产线装备与控制实践,研究了Φ12. 5 mm规格82B盘条冬季时效期系统控制。结果表明:通过控制加热炉加热段温度在1 060～1 080℃,精轧后1#～4#水冷箱水量分配比例调整为400∶350∶150∶100,控制相变后到集卷筒之间冷速不超过1. 7℃/s,集卷小车到卸卷小车之间冷速不超过0. 13℃/s,实现了冬季在环境温度为-12～-22℃的条件下,盘条下线7 d后即可在工业大生产中稳定进行冷拉拔加工的技术突破,冬季拉拔速度可由常规的4. 5～5. 5 m/s提高至6. 0 m/s。
The phenomenon of large diameter 82 B wire rods have longer aging period is widespread in industry. The systematic control for aging period in winter of 82 B wire rods with Φ12. 5 mm was investigated by industrial mill trials in HBIS group Xuansteel company. The results show that:by controlling the heating temperature at 1 060—1 080 ℃ in the heating furnace,adjusting the distribution rate of water quantity between 1#—4#water block,controlling the cooling rate less than 1. 7 ℃/s from the completion of phase transformation to coil collecting device and the cooling rate no more than 0. 13 ℃/s between coil collection car and stripper car,the 82 B wire rods( rolling off the assembly line 7 d) cold drawing process can be undertaken steadily in large industrial production when the drawing temperature lies at-12—-22 ℃ in winter,the drawing speed is improved from 4. 5—5. 5 m/s to 6. 0 m/s.
The phenomenon of large diameter 82 B wire rods have longer aging period is widespread in industry. The systematic control for aging period in winter of 82 B wire rods with Φ12. 5 mm was investigated by industrial mill trials in HBIS group Xuansteel company. The results show that:by controlling the heating temperature at 1 060—1 080 ℃ in the heating furnace,adjusting the distribution rate of water quantity between 1#—4#water block,controlling the cooling rate less than 1. 7 ℃/s from the completion of phase transformation to coil collecting device and the cooling rate no more than 0. 13 ℃/s between coil collection car and stripper car,the 82 B wire rods( rolling off the assembly line 7 d) cold drawing process can be undertaken steadily in large industrial production when the drawing temperature lies at-12—-22 ℃ in winter,the drawing speed is improved from 4. 5—5. 5 m/s to 6. 0 m/s.
引文
1 Wang L,Ma H,Fen G X. Heat Treatment of Metals,2011,36(8),107(in Chinese).王雷,麻晗,峰公雄.金属热处理,2011,36(8),107.
2 Fan Y P,Wu B Z. Steel Wire Products,2006,32(6),38(in Chinese).范银平,巫保振.金属制品,2006,32(6),38.
3 Hu X J,Chen S H,Fang F,et al. Heat Treatment of Metals,2007,32(3),36(in Chinese).胡显军,陈少慧,方峰,等.金属热处理,2007,32(3),36.
4 Zhao J,Zhu S H,Wang Z Q,et al. Iron&Steel,2011,46(12),53(in Chinese).赵捷,朱树行,王志奇,等.钢铁,2011,46(12),53.
5 Wei F L. Metal Products,2011,37(5),59(in Chinese).魏福龙.金属制品,2011,37(5),59.
6 Chen Z Y,Han J T,Zhang Y J. Metal Products,2009,35(2),37(in Chinese).陈志源,韩静涛,张永军.金属制品,2009,35(2),37.
7 Li J,Yu D W,Zheng W L,et al. Iron&Steel,2005,40(2),66(in Chinese).李健,虞敌卫,郑文龙,等.钢铁,2005,40(2),66.
8 Yang F,Jiang J Q,Fang F,et al. Material Review,2007,21(10),74(in Chinese).杨帆,蒋建清,方峰,等.材料导报,2007,21(10),74.
9 Xu Y,Song R B,Liu Z D. Hot Working Technology,2015,44(8),100(in Chinese).徐杨,宋仁伯,刘政东.热加工工艺,2015,44(8),100.
10 Zhang X D,Godfrey A,Huang X X,et al. Acta Materialia,2011,59(9),3422.
11 Lu Y P. The mechanism and experimental study of vibration stress relief.Master’s Thesis,Zhejiang University,China,2002(in Chinese).芦亚萍.振动消除残余应力机理分析与试验研究.硕士学位论文,浙江大学,2002.
12 Liu J H,Wang L,Liu Y,et al. Journal of Northeastern University,2015,36 (1),29(in Chinese).刘家骅,王磊,刘杨,等.东北大学学报,2015,36(1),29.
13 Michihiko N. Heat Treatment,2010,25(3),1(in Chinese).南雲道彦.热处理,2010,25(3),1.
2 Fan Y P,Wu B Z. Steel Wire Products,2006,32(6),38(in Chinese).范银平,巫保振.金属制品,2006,32(6),38.
3 Hu X J,Chen S H,Fang F,et al. Heat Treatment of Metals,2007,32(3),36(in Chinese).胡显军,陈少慧,方峰,等.金属热处理,2007,32(3),36.
4 Zhao J,Zhu S H,Wang Z Q,et al. Iron&Steel,2011,46(12),53(in Chinese).赵捷,朱树行,王志奇,等.钢铁,2011,46(12),53.
5 Wei F L. Metal Products,2011,37(5),59(in Chinese).魏福龙.金属制品,2011,37(5),59.
6 Chen Z Y,Han J T,Zhang Y J. Metal Products,2009,35(2),37(in Chinese).陈志源,韩静涛,张永军.金属制品,2009,35(2),37.
7 Li J,Yu D W,Zheng W L,et al. Iron&Steel,2005,40(2),66(in Chinese).李健,虞敌卫,郑文龙,等.钢铁,2005,40(2),66.
8 Yang F,Jiang J Q,Fang F,et al. Material Review,2007,21(10),74(in Chinese).杨帆,蒋建清,方峰,等.材料导报,2007,21(10),74.
9 Xu Y,Song R B,Liu Z D. Hot Working Technology,2015,44(8),100(in Chinese).徐杨,宋仁伯,刘政东.热加工工艺,2015,44(8),100.
10 Zhang X D,Godfrey A,Huang X X,et al. Acta Materialia,2011,59(9),3422.
11 Lu Y P. The mechanism and experimental study of vibration stress relief.Master’s Thesis,Zhejiang University,China,2002(in Chinese).芦亚萍.振动消除残余应力机理分析与试验研究.硕士学位论文,浙江大学,2002.
12 Liu J H,Wang L,Liu Y,et al. Journal of Northeastern University,2015,36 (1),29(in Chinese).刘家骅,王磊,刘杨,等.东北大学学报,2015,36(1),29.
13 Michihiko N. Heat Treatment,2010,25(3),1(in Chinese).南雲道彦.热处理,2010,25(3),1.