高强度帘线钢中氮化钛夹杂的固溶行为分析
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摘要
为了提高帘线钢盘条的质量,实现轧制过程高强度帘线钢中大颗粒氮化钛夹杂的有效控制,通过试验钢中氮化钛夹杂的固溶试验研究,探讨了高强度帘线钢在加热过程中氮化钛夹杂的固溶行为和影响机制。结果表明,氮化钛夹杂在加热升温阶段存在较为明显的固溶行为,且固溶效果与加热温度和保温时间密切相关。通过适当提高轧钢加热炉温度和延长保温时间以及随后的快速冷却,可以对高强度帘线钢中大颗粒氮化钛夹杂的尺寸和数量进行有效控制。
In order to improve the quality of the wire rod cord steel and achieve the effective control of large particle titanium nitride inclusion in the high strength tire cord steel during rolling process,the solid solution behavior and influence factors of titanium nitride inclusion in tire cord steel during the heating process were discussed based on the solid solution experiments of the steel sample.The conclusions were that there was obvious solid solution behavior of titanium nitride inclusion in the heating process,and the solid solution effect as closely related to the heating temperature and holding time.By properly increasing the rolling temperature,holding time and the subsequent cooling rate,the size and quantity of large particle titanium nitride inclusion in the high strength tire cord steel can be effectively controlled.
In order to improve the quality of the wire rod cord steel and achieve the effective control of large particle titanium nitride inclusion in the high strength tire cord steel during rolling process,the solid solution behavior and influence factors of titanium nitride inclusion in tire cord steel during the heating process were discussed based on the solid solution experiments of the steel sample.The conclusions were that there was obvious solid solution behavior of titanium nitride inclusion in the heating process,and the solid solution effect as closely related to the heating temperature and holding time.By properly increasing the rolling temperature,holding time and the subsequent cooling rate,the size and quantity of large particle titanium nitride inclusion in the high strength tire cord steel can be effectively controlled.
引文
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[14]惠亚军,潘辉,李文远,等.1 000MPa级Nb-Ti微合金化超高强钢加热工艺研究[J].首钢科技,2017(1):1.
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[2]李明,胡志勇,陈兴华.南钢转炉流程生产高品质帘线钢的实践[J].中国冶金,2018,28(4):40.
[3] Michelic S K,Loder D,Reip T,et al.Characterization of TiN,TiC and Ti(C,N)in titanium-alloyed ferritic chromium steels focusing on the significance of different particle morphologies[J].Materials Characterization,2015,100:61.
[4]薛正良,金武涛,雷家柳,等.帘线钢生产中钛夹杂的析出与控制[J].炼钢,2016,32(4):23.
[5] Descotes V,Migot S,Robaut F,et al.TEM characterization of a titanium nitride(TiN)inclusion in a Fe-Ni-Co maraging steel[J].Metallurgical and Materials Transactions:A,2015,46(7):2793.
[6] LIU Hong-yu,WAN Bao-yi,ZENG Xiao-yu,et al.Effect of V and N on microstructures and properties of grade-70tire cord steel during cold drawing[J].Journal of Iron and Steel Research,International,2015,22(2):171.
[7]易顺,陶勇,阮方,等.帘线钢凝固过程中钛和氮偏析及TiN夹杂尺寸计算[J].钢铁,2016,51(4):70.
[8] CAI Xiao-feng,BAO Yan-ping,WANG Ming,et al.Investigation of precipitation and growth behavior of Ti inclusions in tire cord steel[J].Metallurgical Research and Technology,2015,112(4):407.
[9]雷家柳,薛正良.帘线钢生产过程中钛含量的影响因素及控制[J].江苏大学学报:自然科学版,2015,36(6):728.
[10]常宏伟,张钟铮.帘线钢盘条全氧含量控制技术[J].鞍钢技术,2014(2):17.
[11]王瑞敏,桂江兵,任安超.国内外帘线钢盘条实物质量对比分析[J].金属制品,2015,41(6):49.
[12]汤伟,郭建龙,王敏,等.82A帘线钢断口断裂形式及原因分析[J].金属材料与冶金工程,2016(6):9.
[13]王昆鹏,姜敏,赵昊乾,等.帘线钢生产过程中氧化物夹杂的演变规律[J].钢铁,2016,51(4):1.
[14]惠亚军,潘辉,李文远,等.1 000MPa级Nb-Ti微合金化超高强钢加热工艺研究[J].首钢科技,2017(1):1.
[15]张京,薛正良,蒋跃东,等.帘线钢SWRH82A铸坯加热过程中钛夹杂的固溶[J].材料与冶金学报,2014,13(4):242.