二次冷轧压下率对镀锡板组织和性能的影响
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摘要
为了开发二次冷轧镀锡板,采用硬度计、拉伸试验机、光学显微镜、透射电镜和X射线衍射仪研究了二次冷轧压下率对镀锡板组织和性能的影响规律。结果表明,随着二次冷轧压下率提高,试验钢的硬度和强度提高,各向异性增加,伸长率降低,当二次冷轧压下率为20%时可获得较高的硬度和伸长率的匹配。同时二次冷轧压下率对织构影响明显,当压下率为20%～40%时,α取向线中最高取向密度出现在{223}〈110〉～{445}〈110〉之间,可达到6.2,并且随变形量增加,γ取向线中{111}〈110〉取向密度逐渐从3.1降低到2.7,{111}〈112〉取向密度逐渐从4.9提高到5.3。
In order to develop secondary cold-rolled tinplate,effects of the secondary cold rolling reduction on the microstructure and properties of the tinplate were studied by the hardness tester,tensile tester,optical microscope,transmission electron microscope and X-ray diffractometer. The results showed that as the secondary cold rolling reduction rate increasing,the hardness and strength of the test steel increased,the anisotropy increases,and the elongation decreased.When the secondary cold rolling reduction rate was 20%,the higher hardness and elongation match could be reached. At the same time,the secondary cold rolling reduction had a significant influence on the texture. When the secondary cold rolling reduction rate was between 20% and 40%,the highest orientation density in the α-orientation line appeared between {223}〈110〉and {445}〈110〉,which could reach 6.2. And with the secondary cold rolling reduction rate increasing,the {111}〈110〉orientation density in the γ-oriented line gradually decreased from 3.1 to 2.7,and the {111}〈112〉orientation density gradually increased from 4.9 to 5.3.
In order to develop secondary cold-rolled tinplate,effects of the secondary cold rolling reduction on the microstructure and properties of the tinplate were studied by the hardness tester,tensile tester,optical microscope,transmission electron microscope and X-ray diffractometer. The results showed that as the secondary cold rolling reduction rate increasing,the hardness and strength of the test steel increased,the anisotropy increases,and the elongation decreased.When the secondary cold rolling reduction rate was 20%,the higher hardness and elongation match could be reached. At the same time,the secondary cold rolling reduction had a significant influence on the texture. When the secondary cold rolling reduction rate was between 20% and 40%,the highest orientation density in the α-orientation line appeared between {223}〈110〉and {445}〈110〉,which could reach 6.2. And with the secondary cold rolling reduction rate increasing,the {111}〈110〉orientation density in the γ-oriented line gradually decreased from 3.1 to 2.7,and the {111}〈112〉orientation density gradually increased from 4.9 to 5.3.
引文
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[11]郑菊华,胡忠举,龙东平.二次冷轧压下率对DCR带钢力学性能与织构的影响[J].材料导报:研究篇,2016,30(8):95.(ZHENG Ju-hua,HU Zhong-ju,LONG Dong-ping. Effect of reduction ratio in secondary cold-rolling on mechanical properties and texture of DCR strip steel[J]. Mater Rev:Res,2016,30(8):95.)
[12]关小军,王先进,凤佩华,等.超低碳高强度BH钢板的织构发展[J].钢铁研究,1995(5):22.(GUAN Xiao-jun,WANG Xianjin,FENG Pei-hua,et al. Development on texture of super-low carbon high strength BH steel plate[J]. Research on Iron and Steel,1995(5):22.)
[2] MichaeI C. Tinplate[J]. Plating and Surface Finishing,1998,85(11):66.
[3]齐海峰,万军,刘醒,等.双机架在线平整机组过焊缝技术应用[J].中国冶金,2018,28(7)61.(QI Hai-feng,WAN Jun,LIU Xing,et al. Application of pass-weld technology of online double-stand temper mill[J]. China Metallurgy,2018,28(7):61.)
[4]王莉莉,黄久贵,李建中.二次冷轧镀铬铁的产品特性研究[J].上海金属,2012,34(3):26.(WANG Li-li,HUANG Jiu-gui,LI Jian-zhong. Study on product properties of double cold rolled chrome plated iron[J]. Shanghai Metal,2012,34(3):26.)
[5]胡建军,文杰,于孟,等. DR9镀锡板板形控制技术研究与应用[J].中国冶金,2018,28(6):37.(HU Jian-jun,WEN Jie,YU Meng,et al. Research and application of flatness control on DR9 tinplate[J]. China Metallurgy,2018,28(6):37.)
[6]朱国和,周庚瑞.宝钢二次冷轧无锡钢板表面结构分析[J].宝钢技术,2014(3):58.(ZHU Guo-he,ZHOU Geng-rui. Analysis of surface structure of double cold reduction tin free steel of Baosteel[J]. Baosteel Technical Research,2014(3):58.)
[7]白振华,司红鑫,周庆田,等.二次冷轧过程工艺润滑制度综合优化技术的研究[J].钢铁,2011,46(6):60.(BAI Zhen-hua,SI Hong-xin,ZHOU Qing-tian,et al. Comprehensive optimized technology of processing lubrication system in double cold reduction[J]. Iron and Steel,2011,46(6):60.)
[8]崔亚亚,李柏阳,白振华,等.二次冷轧机组乳化液流量与浓度综合优化设定[J].钢铁,2018,53(2):40.(CUI Ya-ya,LI Boyang,BAI Zhen-hua,et al. Comprehensive optimization setting of emulsion flowrate and concentration for double cold reduction mill[J]. Iron and Steel,2018,53(2):40.)
[9] LIAO Lu-hai,ZHENG Xiao-fei,KANG Yong-lin,et al. Crystallographic texture and earing behavior analysis for different second cold reductions of double-reduction tinplate[J]. International Journal of Minerals,Metallurgy and Materials,2018,25(6):652.
[10]方圆,吴志国,孙超凡,等.工艺参数对二次冷轧镀锡板组织性能的影响[C]//第十一届中国钢铁年会论文集.北京:中国金属学会,2017:1042.(FANG Yuan,WU Zhi-guo,SUN Chaofan,et al. Effect of processing parameters on microstructure and properties of double cold-reduced tinplate[C]//Proceedings of the 11th China Iron and Steel Annual Conference. Beijing:The Chinese Society for Metals,2017:1042.)
[11]郑菊华,胡忠举,龙东平.二次冷轧压下率对DCR带钢力学性能与织构的影响[J].材料导报:研究篇,2016,30(8):95.(ZHENG Ju-hua,HU Zhong-ju,LONG Dong-ping. Effect of reduction ratio in secondary cold-rolling on mechanical properties and texture of DCR strip steel[J]. Mater Rev:Res,2016,30(8):95.)
[12]关小军,王先进,凤佩华,等.超低碳高强度BH钢板的织构发展[J].钢铁研究,1995(5):22.(GUAN Xiao-jun,WANG Xianjin,FENG Pei-hua,et al. Development on texture of super-low carbon high strength BH steel plate[J]. Research on Iron and Steel,1995(5):22.)