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| Stress model and influence factors of sunk roll system in hot dip galvanizing unit |
| WANG Xiao-jian1,2, QIAN Sheng1,3, CUI Meng-yu1, ZHANG Ji1, BAI Zhen-hua1,4 |
1. National Cold Rolling Strip Equipment and Process Engineering Technology Research Center, Yanshan University, Qinhuangdao 066004, Hebei, China;
2. Meigang Technology Center, Central Research Institute, Baosteel Co., Ltd., Nanjing 210039, Jiangsu, China;
3. Mechanical and Electrical Engineering,Huangshan University College, Huangshan 245041, Anhui, China;
4. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, China |
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Abstract The stress of sunk roll system of hot dip galvanizing unit is complicated under the working condition of zinc pot,which is greatly affected by the outside. Taking full account of the equipment and process characteristics of the unit. Firstly,the stress of Sunk roll system under working condition was analyzed,and the relationship between the insertion quantity of the corrected roll and the wrap angle of the roll system and an empirical model of roll surface friction coefficient based on the deposition thickness of zinc slag on roll surface were established. Then,the contact pressure model and friction driving moment model of sunk roll system surface were established by strip element discrete method,and the axial end supporting force model and friction resistance moment model of sunk roll system were determined based on the simplified beam model. Finally,the force model of sunk roll system was applied to the galvanizing process section of hot dip galvanizing unit in the domestic,and the influencing factors of the system force were determined in a typical steel strip,and five different levels of production process parameters to analyze the process parameters on the influence law of roll system force condition according to actual working condition and the requirement of flatness,which provided a basis for guidance in process optimization of sinking roll system. The results show that the influences of the four process parameters on the contact pressure and friction moment of the roller system are different,and the contact pressure of the roller surface is nonlinear relationship. The influence of strip tension on the contact pressure of each roller is different,which is the most affected for the sunk roller among three rollers,while the other two rollers are almost not affected by the tension. The average friction coefficient of roller surface and strip speed have little influence on the contact pressure of roller. The friction driving moment of the roller system and the friction resistance moment of the shaft end increase with the increase of the insertion amount of the corrected roller and the average friction coefficient of the roller surface. There is a linear relationship between strip tension and friction driving moment and shaft end friction resistance moment of sunk roll,while strip tension has little effect on the other two rolls. Strip speed has little effect on the friction driving moment and shaft end friction resistance moment of roller system.
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Received: 11 February 2022
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[1] 刘灿楼,李远鹏,俞钢强,等. 钢板连续热浸镀铝生产工艺技术[J].中国冶金,2016,26(6):45.(LIU Can-lou,LI Yuan-peng,YU Gang-qiang,et al. Production technology for continuous hot-dip aluminized steel sheet[J]. China Metallurgy,2016,26(6):45.)
[2] 钱胜,张文军,林威,等. 热镀锌连退过程C翘机理及其预报模型[J].钢铁,2021,56(9):65.(QIAN Sheng,ZHANG Wen-jun,LIN Wei,et al. Formation mechanism and prediction model for C-warping defect of strip steel in continuous annealing process of hot galvalume unit[J]. Iron and Steel,2021,56(9):65.)
[3] 杜仲,张保红,熊宁,等. 热镀铝锌轴套及轴瓦失效机理分析[J]. 江西科学,2020,38(2):234.(DU Zhong,ZHANG Bao-hong,XIONG Ning,et al. Failure analysis of sleeve and bushing in hot-dipped aluminum-zinc[J]. Jiangxi Science,2020,38(2):234.)
[4] 王兴东,黄毫军,李友荣,等. 沉没辊装置液固耦合数值模拟及振动实验[J]. 工程科学学报,2016,38(12):1778.(WANG Xing-dong,HUANG Hao-jun,LI You-rong,et al. Numerical simulation and vibration test on the liquid-solid coupling system of a sink roll device[J]. Chinese Journal of Engineering,2016,38(12):1778.)
[5] 王兴东,刘灿灿,李友荣,等. 计及附加质量的热镀锌线沉没辊装置液固耦合振动瞬态响应分析[J]. 振动与冲击,2018,37(7):152.(WANG Xing-dong,LIU Can-can,LI You-rong,et al. Liquid-solid coupled transient vibrations for a sink roll device of hot-dip galvanized line with an added mass[J]. Journal of Vibration and Shock,2018,37(7):152.)
[6] 卢增静,肖彪,李伟,等. 热镀锌线沉没辊动力学建模与稳定性分析[J]. 噪声与振动控制,2016,36(3):52.(LU Zeng-jing,XIAO Biao,LI Wei,et al. Dynamic modeling and stability analysis of the sink roll in a hot-dip galvanizing line[J]. Noise and Vibration Control,2016, 36(3):52.)
[7] 李文波,肖激杨,任新意. 超薄镀锌产品沉没辊划伤成因分析与控制技术[J]. 中国冶金,2018,28(1):54.(LI Wen-bo,XIAO Ji-yang,REN Xin-yi. Cause analysis and control technology of stratch of sink roll for ultra thin gauge galvanized products[J]. China Metallurgy,2018,28(1):54.)
[8] 许秀飞. 钢带热镀锌技术问答[M]. 北京:化学工业出版社,2007.(XU Xiu-fei. Hot Dip Galvanizing Technology for Steel Strip[M]. Beijing:Chemical Industry Press,2007.)
[9] 李嘉勋,卢海彪,王异军,等. 气刀对热镀锌锅流场影响的数值模拟[J]. 钢铁研究学报,2022,34(1):64.(LI Jia-xun,LU Hai-biao,WANG Yi-jun,et al. Numerical simulation on influence of air knife on flow field of hot-dip galvanizing pot[J]. Journal of Iron and Steel Research,2022,34(1):64.)
[10] 卓小文,石亚飞,张肖飞,等. 高温锌液中轴套衬瓦的锌腐蚀与磨损交互行为研究[J]. 金属热处理,2019,44(s1):48.(ZHUO Xiao-wen,SHI Ya-fei,ZHANG Xiao-fei,et al. Study on the interaction between zinc corrosion and wear of sleeves and bushing in high temperature zinc solution[J]. Heat Treatment of Metals,2019,44(s1):48.)
[11] 任新意,高慧敏,徐海卫,等. 热镀锌薄带钢穿带堆钢的原因及控制[J]. 上海金属,2021,43(5):91.(REN Xin-yi,GAO Hui-min,XU Hai-wei,et al. Cause and control of piling-up of hot dip galvanized thin strip during threading[J]. Shanghai Metals,2021,43(5):91.)
[12] 马晓宁,祖艳萍,任伟超,等. 立式退火炉带钢运行稳定性控制[J]. 中国冶金,2021,31(5):123.(MA Xiao-ning,ZU Yan-ping,REN Wei-chao,et al. Running stability control of strip steel in vertical annealing furnace[J]. China Metallurgy,2021,31(5):123.)
[13] 刘开海,陈玉叶. 中厚板热矫直机支撑辊轴承损坏原因分析与改进措施[J]. 轧钢,2021,38(3):89.(LIU Kai-hai,CHEN Yu-ye. Causes analysis and improvement measures for bearing damage of backup roll of straightener for medium and heavy plate[J]. Steel Rolling,2021,38(3):89.)
[14] 吕剑,卢杰. 0.6 mm以下规格热镀锌带钢光整机的张力控制研究[J]. 轧钢,2019,36(5):67.(LÜ Jian,LU Jie. Research on tension control of SPM for 0.6 mm and thiner gauge hot-dipped gawanized strip[J]. Steel Rolling,2019,36(5):67.)
[15] 沈新玉,宫峰,裴洪涛,等. 宽幅冷轧带钢连退跑偏影响因素的定量分析研究[J]. 轧钢,2021,38(4):44.(SHEN Xin-yu,GONG Feng,PEI Hong-tao,et al. Quantitative analysis and reseach on influence factors of cold wide gauge strip deviation during continuous annealing[J]. Steel Rolling,2021,38(4):44.) |
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2022, Vol. 57 
