Abstract：Straightening roller as the important component of continuous casting machine,whose working condition is poor and the wear is serious. In order to reduce the wear of roller,the WC-20Cr-7Ni coating with thickness of 0.2 mm was prepared on the surfaces of straightening roller and H13 steel plate by plasma spraying technology. The thermal shock resistance and abrasion resistance of the WC-20Cr-7Ni coating were investigated respectively through water quenching thermal shock and rolling experiments. Metallographic analysis and hardness testing were performed on the samples before and after thermal shock. The results show that the porosity of WC-20Cr-7Ni coating is low,the resistance of wear and thermal shock are both excellent,which can effectively improve the service life of the straightening roller.
孙登月, 王朋鹤, 许石民, 汝文弟, 孙晨光. 连铸机拉矫辊等离子喷涂WC-20Cr-7Ni涂层性能[J]. 钢铁, 2020, 55(9): 111-117.
SUN Deng-yue, WANG Peng-he, XU Shi-min, RU Wen-di, SUN Chen-guang. Properties of WC-20Cr-7Ni coating by plasma spraying on straightening roller of continuous casting machine[J]. Iron and Steel, 2020, 55(9): 111-117.
[1] 何琴琴. 薄板坯连铸连轧流程专利分析[J]. 轧钢,2019,36(3):51.(HE Qin-qin. An analysis of globle patents on thin slab continuous casting and rolling process[J]. Steel Rolling,2019,36(3):51.) [2] 赵秀玲,王健. 连铸机堆焊拉矫辊的焊接工艺[J]. 金属加工,2009,45(20):45.(ZHAO Xiu-ling,WANG Jian. Welding process of continuous casting machine surfacing welding straightening roller[J]. Metal Processing,2014,45(20):225.) [3] 付宇明,张金森,郑丽娟. 拉矫辊传热机理及激光熔覆强化[J]. 塑性工程学报,2012,19(2):96.(FU Yu-ming,ZHANG Jin-sen,ZHENG Li-juan. Research on heat transfer mechanism of caster roller and laser cladding strengthening[J]. Journal of Plasticity Engineering,2012,19(2):96.) [4] 李生存,陈景辉,王浩宇. 拉矫机工作辊异常磨损和轴头烧损的对策[J]. 中国冶金,2018,28(10):51. (LI Sheng-cun,CHEN Jing-hui,WANG Hao-yu. Countermeasures for inordinate wearing and axle neck burning of work roll in tension leveler[J]. China Metallurgy,2018,28(10):51.) [5] 陈华,王立岩,刘晓春. 拉矫辊堆焊组织及性能[J]. 热加工工艺,2014,43(23):225.(CHEN Hua,WANG Li-yan,LIU Xiao-chun. Microstructure and property of pulling-straightening roller welding cladding layer[J]. Hot Working Technology,2014,43(23):225.) [6] 陈国清,赵薇,任媛媛. 微波烧结WC-ZrO2复合材料的微观组织及增韧机理[J]. 现代技术陶瓷,2018,39(4):287.(CHEN Guo-qing,ZHAO Wei,REN Yuan-yuan. Microstructure and toughening mechanism of microwave sintered WC-ZrO2 composites[J]. Modern Technical Ceramics,2018,39(4):287.) [7] 傅迎庆,周峰,高阳. 低功率等离子喷涂WC-Co陶瓷涂层组织[J]. 大连海事大学学报,2007,33(2):12.(FU Ying-qing,ZHOU Feng,GAO Yang. Low-power plasma sprayed WC-Co ceramic coating structure[J]. Journal of Dalian Maritime University,2007,33(2):12.) [8] Li H,Khor K A,Yu L G,et al. Microstructure modifications and phase transformation in plasma-sprayed WC-Co coatings following post-spray spark plasma sintering[J]. Surface and Coatings Technology,2005,194(1):96. [9] Stewart D A,Shipway P H,Mc Cartney D G. Microstructural evolution in thermally sprayed WC-Co coatings:Comparison between nanocomposite and conventional starting powders[J]. Acta Materialia,2000,48(7):1593. [10] Shahin K A,Taher R,Neda F N. The effects of heat treatment on the corrosion behavior of HVOF-sprayed WC-17Co coatings[J]. Protection of Metals and Physical Chemistry of Surfaces,2019,55(5):936. [11] Santos R F,Ferro Rocha A M,Bastos A C,et al. Microstructural characterization and corrosion resistance of WC-Ni-Cr-Mo composite-the effect of Mo[J]. International Journal of Refractory Metals and Hard Materials,2020,86:105090. [12] HU Tian-shi,YUAN Xiao-ming,SHAI Zhi-jun,et al. Improving the porosity of the alloy Ni-Cr-WC by coating CeO2:First principles calculation combined with experiment[J]. Computational Materials Science,2020,171:109267. [13] 李军,孙登月,张峰. 连铸机拉矫辊辊面激光重熔纳米ZrO2基涂层性能[J]. 钢铁,2017,52(10):104.(LI Jun,SUN Deng-yue,ZHANG Feng. Laser recasting of nano-ZrO2-based coating on roll surface of straightening roll of continuous casting machine[J]. Iron and Steel,2017,52(10):104.) [14] ZHANG Feng,SUN Deng-yue,XIE Jiu-ming,et al. Application of zirconia thermal barrier coating on the surface of pulling straightening roller[J]. International Journal of Heat and Technology,2017,35(4):765. [15] 李军. 连铸机拉矫辊氧化锆涂层的热应力及疲劳寿命计算[D]. 秦皇岛:燕山大学,2018.(LI Jun.Calculation of Thermal Stress and Thermal Fatigue Life of Zirconia Coating on Pulling Straightening Roller of Continuous Casting Maching[D]. Qinhuangdao:Yanshan University,2018.) [16] 燕山大学. 一种涂层材料热冲击性能检测实验装置及其实验辅助装置:中国,20181416024.X[P/OL]. 2018-11-26 [2019-01-29].(Yanshan University. Thermal Impact Performance Testing Experimental Device for Coating Materials and Experimental Auxiliary Device of Thermal Impact Performance Testing Experimental Device:China,20181416024.X[P/OL]. 2018-11-26 [ 2019-01-29].) [17] 燕山大学. 一种基于轧辊的氧化锆热障涂层的制备方法:中国,201410111086.5[P/OL].2014-03-24[2014-07-09].(Yanshan University. A Method of Preparing Zirconia Thermal Barrier Coating Based on Roll:China,201410111086.5[P/OL]. 2014-03-24[2014-07-09].) [18] 白冰,张治民,王江慧. 步进距离对HVAF喷涂WC-10Co-4Cr涂层孔隙率和显微硬度的影响[J]. 热加工技术,2019,48(8):154.(BAI Bing,ZHANG Zhi-min,WANG Jiang-hui. Effects of step distance on porosity and microhardness of HVAF sprayed WC-10Co-4Cr coating [J]. Hot Working Technology,2019,48(8):154.) [19] 朱苗勇. 新一代高效连铸技术发展思考[J]. 钢铁,2019,54(8):21.(ZHU Miao-yong. Some considerations for new generation of high-efficiency continuous casting technology development[J]. Iron and Steel,2019,54(8):21.) [20] 邓想涛,王昭东,黄龙. 连铸坯内生超硬TiC超级耐磨钢的研究与应用[J]. 轧钢,2019,36(6):6.(DENG Xiang-tao,WANG Zhao-dong,HUANG Long. Development and industrial application of new super low alloy abrasion resistant steel dependenting on continuous casting formed TiC particles[J]. Steel Rolling,2019,36(6):6.) [21] YANG S,ZOU B,SHEN J,et al. Thermal shock behavior of YSZ thermal barrier coatings with a Ni-P/Al/Ni-P sandwich interlayer on AZ91D magnesium alloy substrate at 400 ℃[J]. Surface and Coatings Technology,2019,367(3):278. [22] 陈江涛,孙万昌,岳江峰. WC-CoCr涂层热震及高温抗氧化性能[J]. 热加工工艺,2016,45(22):141.(CHEN Jiang-tao,SUN Wan-chang,YUE Jiang-feng. Thermal shock and high temperature oxidation resistance of WC-CoCr coatings[J]. Hot Processing Technology,2016,45(22):141.) [23] 赵利,宋进东,佟鑫. 碳化钨涂层耐热性能研究[J]. 材料研究与应用,2011,5(2):109.(ZHAO Li,SONG Jin-dong,TONG Xin. Study on the heat resistance of WC coating[J]. Materials Research and Application,2011,5(2):109.) [24] GU S,ZHANG S,LIU F,et al. Microstructure and thermal shock performance of Y2Hf2O7 coating deposited on SiC coated C/C composite[J]. Applied Surface Science,2018,11(455):849.
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