Article(id=1236327384987784147, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236327378968965364, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2023.05.038, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1682352000000, receivedDateStr=2023-04-25, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772693018432, onlineDateStr=2026-03-05, pubDate=1696089600000, pubDateStr=2023-10-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772693018432, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772693018432, creator=13701087609, updateTime=1772693018432, updator=13701087609, issue=Issue{id=1236327378968965364, tenantId=1146029695717560320, journalId=1235980550691926019, year='2023', volume='43', issue='5', pageStart='1', pageEnd='177', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772693016997, creator=13701087609, updateTime=1772693111855, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236327776882577759, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236327378968965364, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236327776882577760, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236327378968965364, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=169, endPage=173, ext={EN=ArticleExt(id=1236327387147850733, articleId=1236327384987784147, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Process Optimization and Property Investigation for Ultra-High-Speed Laser Cladded Fe-Cr-B Based Wear-Resistant Coating, columnId=1236276108207902848, journalTitle=Mining and Metallurgical Engineering, columnName=MATERIALS, runingTitle=null, highlight=null, articleAbstract=

Fe-Cr-B based wear-resistant coating was prepared on the surface of 45 steel by ultra-high-speed laser cladding. The effects of laser power, scanning speed and powder feeding speed on the aspect ratio and crack of single pass cladding layer were studied by orthogonal experimental method, and the effects of overlap rates on the surface quality of cladded layer was also studied. The optimal process parameters were determined as follows: laser power of 2 300 W, scanning speed of 250 mm/s, powder feeding speed of 24 g/min, and overlap rate of 70%. The results show that the hardness of the coating is between 754HV_0.2 and 831HV_0.2, which is 2.36 times to 2.60 times of the matrix hardness. Under the same conditions, the volume wear of the coating is only 3.64% of electroplated hard chromium coating.

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使用超高速激光熔覆在45钢表面制备了Fe-Cr-B基耐磨涂层。采用正交实验研究了激光功率、扫描速度和送粉速度对单道熔覆层宽高比和裂纹的影响，并研究了搭接率对熔覆层表面质量的影响。结果表明，适宜的工艺参数为：激光功率2 300 W、扫描速度250 mm/s、送粉速度24 g/min、搭接率70%，此工艺参数下涂层硬度在754HV_0.2到831HV_0.2之间（是基体硬度的2.36~2.60倍），在相同条件下铁基涂层的体积磨损量仅为电镀硬铬镀层的3.64%。

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刘志威（1998—），男，湖南娄底人，硕士研究生，主要研究方向为超高速激光熔覆涂层。

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刘志威（1998—），男，湖南娄底人，硕士研究生，主要研究方向为超高速激光熔覆涂层。

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