摘要
连铸机拉矫辊作为连铸机的重要组件,工作环境恶劣、磨损严重。为了降低连铸机拉矫辊工作过程中的辊面磨损,利用等离子喷涂技术在拉矫辊及H13钢板表面制备了厚度为0.2mm的WC-20Cr-7Ni涂层。通过水淬热冲击及轧制试验探究了WC-20Cr-7Ni涂层的抗热冲击性能及耐磨性,并对热冲击前后试样进行了金相分析及硬度测试。结果表明,WC-20Cr-7Ni涂层孔隙率较低,并具有较高的耐磨性及优异的抗热冲击性能,可以有效提升连铸机拉矫辊的使用寿命。
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.
作者
孙登月
王朋鹤
许石民
汝文弟
孙晨光
SUN Deng-yue;WANG Peng-he;XU Shi-min;RU Wen-di;SUN Chen-guang(National Cold Rolled Strip Equipment and Process Engineering Technology Research Center,Yanshan University,Qinhuangdao 066004,Hebei,China)
出处
《钢铁》
CAS
CSCD
北大核心
2020年第9期111-117,共7页
Iron and Steel
基金
河北省自然科学基金-钢铁联合研究基金资助项目(E2016203182)。
关键词
连铸机拉矫辊
等离子喷涂
热冲击性能
WC-20Cr-7Ni
阻热涂层
straightening roller of continuous casting machine
plasma spraying
thermal shock resistance
WC-20Cr-7Ni
heat resistance coating
