Effect of secondary cold rolling reduction rate on microstructure and properties of tinplate
MO Zhi-ying1, FANG Yuan2, LIU Wei1, WU Zhi-guo2, WANG Ya-qing2, SUN Chao-fan2
1. Tinplate Department, Shougang Jingtang United Iron and Steel Co., Ltd., Tangshan 063200, Hebei, China 2. Research Institute of Technology, Shougang Group Co., Ltd., Beijing 100043, China
Abstract:In order to develop high-hardness 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 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 44%,the DR-9M can be achieved. At the same time, the use of high carbon and nitrogen fortification system combined with low temperature annealing is not conducive to the formation of favorable texture {111}. The peak of texture orientation density appears in {001}<110>~{114}<110>,{223}<110 >~{445}<110> and {554}<225>,it is easy to produce ears in the 45° direction during stamping deformation.
莫志英, 方圆, 刘伟, 吴志国, 王雅晴, 孙超凡. 二次冷轧压下率对镀锡板组织性能的影响[J]. 钢铁, 2019, 54(12): 70-74.
MO Zhi-ying, FANG Yuan, LIU Wei, WU Zhi-guo, WANG Ya-qing, SUN Chao-fan. Effect of secondary cold rolling reduction rate on microstructure and properties of tinplate. Iron and Steel, 2019, 54(12): 70-74.
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ZHENG Xiao-fei,LIAO Lu-hai,KANG Yong-lin,et al. The effect of chemical composition and processing technology on the microstructure, texture and earing behavior of DR tinplate[J]. Journal of Materials Engineering and Performance,2019,28(1):485.
[8]
林海海,于孟,文杰,等. 镀锡板开平线矫直机插入量对板形控制的影响[J]. 中国冶金,2019,29(1):14.(LIN Hai-hai,YU Meng,WEN Jie,et al. Influence of insertion depth of straightener in tinplate′s blanking line on strip shape[J]. China Metallurgy,2019,29(1):14.)
[9]
计江,胡洪,尤磊,等. 超薄镀锡原板平整及二次冷轧工艺装备的研发应用[J]. 轧钢,2018,35(1):49. (JI Jiang,HU Hong,YOU Lei,et al. Development and application of skin pass and double cold-reduced mill processing for high quality ultra-thin uncoated tin-plated sheet[J]. Steel Rolling,2018,35(1):49.)
[10]
吕敏建. 极薄带钢高速清洗工艺技术及关键设备[J]. 轧钢,2018,35(2):55. (LÜ Min-jian. High speed cleaning processing technology and key equipment for ultra-thin gauge strip[J]. Steel Rolling,2018,35(2):55.)
[11]
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 Chao-fan,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.)
[12]
方圆,莫志英,孙超凡,等. 二次冷轧压下率对镀锡板组织和性能的影响[J]. 钢铁,2019,54(2):48.(FANG Yuan,MO Zhi-ying,SUN Chao-fan,et al. Effect of secondary cold rolling reduction rate on microstructure and properties of tinplate[J]. Iron and Steel,2019,54(2):48.)
[13]
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.