Article(id=1309475263851885426, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1309475253038964788, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20250265, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1790132831776, onlineDateStr=2026-09-23, pubDate=1771516800000, pubDateStr=2026-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790132831776, onlineIssueDateStr=2026-09-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790132831776, creator=13701087609, updateTime=1790132831776, updator=13701087609, issue=Issue{id=1309475253038964788, tenantId=1146029695717560320, journalId=1189873562199433220, year='2026', volume='', issue='2', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='1771516800000', pubDateStr='2026-02-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1790132829198, creator='13701087609', updateTime=1790133031676, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1309476102360367135, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1309475253038964788, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1309476102360367136, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1309475253038964788, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=17, endPage=24, ext={EN=ArticleExt(id=1309475264137098099, articleId=1309475263851885426, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=The Microscopic Mechanism of Key Defects and the Optimization of the Entire Process Technology for Spraying Material of Engine Cylinder Bores, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=

To solve the defects of the engine cylinder bore thermal spray materials, namely the brittle fracture of welding wire, the peeling of copper plate layer, and the coating holes, the defect mechanism is clarified through microstructure analysis and full-process process optimization, and corresponding countermeasures are formulated. The results show that the brittle fracture of the imported material is caused by the large amount of hard bainite resulting from composition segregation, which causes cracks during drawing. The electromagnetic stirring, light pressure reduction and "air cooling + slow cooling" process can effectively inhibit bainite and avoid brittle fracture. The peeling of the copper plating layer is mainly due to insufficient bonding force and low mold surface finish. The "alkaline pre-plating + acidic main plating" and diamond coating drawing die can significantly improve it. The coating holes are related to process fluctuations, nozzle slagging and cleanliness. Through real-time monitoring of key parameters, nozzle maintenance and cleanliness system control, the defect rate of holes is reduced by about 70%. This provides a systematic technical path for the development and quality control of high-performance cylinder bore thermal spray materials.

, authors=Xiulan Liang, Jianping Li, Lei Zhou, Lin Li, authorsList=Xiulan Liang, Jianping Li, Lei Zhou, Lin Li, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1309475264581694324, articleId=1309475263851885426, tenantId=1146029695717560320, journalId=1189873562199433220, language=CN, title=发动机缸孔熔射材料关键缺陷的微观机理及全流程工艺优化, columnId=1309475253923962934, journalTitle=汽车工艺与材料, columnName=中国汽车工程学会汽车材料分会第24届学术年会优秀论文——材料工艺研究, runingTitle=null, highlight=null, articleAbstract=

为解决发动机缸孔熔射材料焊丝脆断、镀铜层脱落及涂层孔洞等缺陷，通过微观组织分析与全流程工艺优化，阐明了缺陷机理并制定了相应对策。结果表明：进口材料脆断源于成分偏析导致的大量硬质贝氏体，其在拉拔中引发裂纹，采用电磁搅拌、轻压下及“空冷+缓冷”工艺可有效抑制贝氏体，避免脆断；镀铜层脱落的主要原因为结合力不足与模具光洁度低，通过“碱性预镀+酸性主镀”与金刚石涂层拉丝模可显著改善；涂层孔洞与工艺波动、喷嘴挂渣及清洁度有关，通过关键参数实时监控、喷枪维护与清洁度系统管控，可使孔洞缺陷率降低约70%。

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梁秀兰（1986—），女，工程师，硕士学位，研究方向为汽车金属材料开发。

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梁秀兰（1986—），女，工程师，硕士学位，研究方向为汽车金属材料开发。

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