Article(id=1319243257217929585, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1319243244198809867, articleNumber=null, orderNo=null, doi=10.13647/j.cnki.btgkj.2021.04.011, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1615824000000, receivedDateStr=2021-03-16, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1792461702874, onlineDateStr=2026-10-20, pubDate=1629820800000, pubDateStr=2021-08-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792461702874, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792461702874, creator=13701087609, updateTime=1792461702874, updator=13701087609, issue=Issue{id=1319243244198809867, tenantId=1146029695717560320, journalId=1185652524569653253, year='2021', volume='47', issue='4', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='1629820800000', pubDateStr='2021-08-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792461699771, creator='13701087609', updateTime=1792735371722, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1320391107637264594, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1319243244198809867, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1320391107637264595, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1319243244198809867, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=43, endPage=45, ext={EN=ArticleExt(id=1319243257406673266, articleId=1319243257217929585, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Study on Cold Crack Sensitivity of Bridge Steel Q345qDNH, columnId=1187340471245357385, journalTitle=Science & Technology of Baotou Steel, columnName=Quality of Variety and Experiment and Research, runingTitle=null, highlight=null, articleAbstract=

The inclined Y-groove welding crack test, maximum hardness test in heat affected zone and rigid butt-joint cracking test for bridge steel Q345qDNH produced by Baotou Steel are carried out. The test results showed that the cold crack sensitivity of bridge steel Q345qDNH with thickness of 20 mm was not great and its cold cracks could be avoided without preheating or using the preheating temperature system of 50 ℃ in actual welding process.

, authors=Xing-long Xue1, Hui-hui Wei2, authorsList=Xing-long Xue, Hui-hui Wei, 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=1319243257951932787, articleId=1319243257217929585, tenantId=1146029695717560320, journalId=1185652524569653253, language=CN, title=桥梁钢Q345qDNH冷裂纹敏感性研究, columnId=1185887584472417142, journalTitle=包钢科技, columnName=品种质量与试验研究, runingTitle=null, highlight=null, articleAbstract=

通过对包钢生产的桥梁钢Q345qDNH进行斜Y型坡口焊接裂纹试验、热影响区最高硬度试验及刚性对接试验,试验结果表明:20 mm厚的Q345qDNH桥梁钢冷裂纹敏感性不大,在实际焊接过程中采用不预热或者50 ℃的预热温度制度,可以避免Q345qDNH桥梁钢冷裂纹的产生。

, authors=薛兴隆1, 魏慧慧2, authorsList=薛兴隆, 魏慧慧, authorCompany=null, correspAuthors=null, authorNote=

薛兴隆(1978-),男,天津市人,助理工程师,现从事质量异议管理工作。

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薛兴隆(1978-),男,天津市人,助理工程师,现从事质量异议管理工作。

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薛兴隆(1978-),男,天津市人,助理工程师,现从事质量异议管理工作。

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桥梁钢Q345qDNH冷裂纹敏感性研究
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薛兴隆 1 , 魏慧慧 2
包钢科技 | 品种质量与试验研究 2021,47(4): 43-45
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包钢科技 |品种质量与试验研究 2021 , 47 (4) : 43 -45
桥梁钢Q345qDNH冷裂纹敏感性研究
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薛兴隆(1978-),男,天津市人,助理工程师,现从事质量异议管理工作。

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薛兴隆1, 魏慧慧2
作者信息
  • 1.内蒙古包钢稀土钢板材有限责任公司,内蒙古 包头 014010
  • 2.内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010
作者简介:

薛兴隆(1978-),男,天津市人,助理工程师,现从事质量异议管理工作。

Study on Cold Crack Sensitivity of Bridge Steel Q345qDNH
Xing-long Xue1, Hui-hui Wei2
Affiliations
  • 1.Inner Mongolia Baotou Steel Rare Earth Steel Plate Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2.Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
出版时间: 2021-08-25 doi: 10.13647/j.cnki.btgkj.2021.04.011
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通过对包钢生产的桥梁钢Q345qDNH进行斜Y型坡口焊接裂纹试验、热影响区最高硬度试验及刚性对接试验,试验结果表明:20 mm厚的Q345qDNH桥梁钢冷裂纹敏感性不大,在实际焊接过程中采用不预热或者50 ℃的预热温度制度,可以避免Q345qDNH桥梁钢冷裂纹的产生。

Q345qDNH  /  斜Y型坡口焊接裂纹试验  /  热影响区最高硬度试验  /  刚性对接试验

The inclined Y-groove welding crack test, maximum hardness test in heat affected zone and rigid butt-joint cracking test for bridge steel Q345qDNH produced by Baotou Steel are carried out. The test results showed that the cold crack sensitivity of bridge steel Q345qDNH with thickness of 20 mm was not great and its cold cracks could be avoided without preheating or using the preheating temperature system of 50 ℃ in actual welding process.

Q345qDNH  /  inclined Y-groove welding crack test  /  maximum hardness test in heat affected zone  /  rigid butt-joint cracking test
薛兴隆, 魏慧慧. 桥梁钢Q345qDNH冷裂纹敏感性研究. 包钢科技, 2021 , 47 (4) : 43 -45 . DOI: 10.13647/j.cnki.btgkj.2021.04.011
Xing-long Xue, Hui-hui Wei. Study on Cold Crack Sensitivity of Bridge Steel Q345qDNH[J]. Science & Technology of Baotou Steel, 2021 , 47 (4) : 43 -45 . DOI: 10.13647/j.cnki.btgkj.2021.04.011

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doi: 10.13647/j.cnki.btgkj.2021.04.011
  • 接收时间:2021-03-16
  • 首发时间:2026-10-20
  • 出版时间:2021-08-25
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  • 收稿日期:2021-03-16
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    1.内蒙古包钢稀土钢板材有限责任公司,内蒙古 包头 014010
    2.内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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