Article(id=1198550866232963248, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550864987254948, articleNumber=1009-5438(2023)06-0038-07, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1696694400000, receivedDateStr=2023-10-08, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763686394508, onlineDateStr=2025-11-21, pubDate=1703433600000, pubDateStr=2023-12-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763686394508, onlineIssueDateStr=2025-11-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763686394508, creator=13701087609, updateTime=1763686394508, updator=13701087609, issue=Issue{id=1198550864987254948, tenantId=1146029695717560320, journalId=1185652524569653253, year='2023', volume='49', issue='6', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763686394210, creator=13701087609, updateTime=1764231183111, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200835875295843255, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550864987254948, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200835875300037560, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550864987254948, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=38, endPage=44, ext={EN=ArticleExt(id=1198550866543341753, articleId=1198550866232963248, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Development of Production Technologies for Small-diameter Boiler Tube, columnId=1198550865733841063, journalTitle=Science & Technology of Baotou Steel, columnName=Special Issue for Manufacturing Dept. of Inner Mongolia Baotou Steel Union Co., Ltd., runingTitle=null, highlight=null, articleAbstract=
The small-diameter boiler tube is designed and developed through innovating process design as well as its quality indexes are improved by Inner Mongolia Baotou Steel Special Steel Pipe Co., Ltd. based on the requirements of group company, “break through and improve product quality”. The seamless steel pipe with outer diameter of 51~114.3 mm and wall thickness of 3.5~12 mm is rolled by continuous casting billet of Φ150 mm in the original design of the unit. The demand of small-diameter boiler tube with outer diameter of 38~48 mm and wall thickness of 3.5~8 mm in the boiler tube industry is greater. The seamless steel pipes of two groups of outer diameter produced with the billets of the same diameter is realized and their wall thickness accuracy is -7.14%~9.14% through researching and developing the technology of large tube reducing rate for continuous mill unit as well as producing the seamless steel pipe with outer diameter of 38~48 mm by continuous casting billet of Φ150 mm. When rolling small-diameter boiler tubes made of materials of 25MnG, 15CrMoG and 12Cr1MoVG, there are defects of “straight fold” on inner surface as well as “linear indentation” and “subsurface cracks” on outer surface of steel tube. Their causes are analyzed combining with the deformation process and material characteristics as well as the solutions are formulated so that qualified rate of ultrasonic flaw detection of product is increased from 86.82% to 91.32%. The heat-treatment schedule for small-diameter boiler tubes made of materials of 15CrMoG and 12Cr1MoVG is formulated as well as the mechanical properties of products are stable under this process schedule, which could meet the requirements of GB/T 5310-2017 standard.
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内蒙古包钢特种钢管有限公司围绕集团公司“突围打样提升产品质量”的要求,通过创新工艺设计,设计开发小口径锅炉管,并提高锅炉管的质量指标。机组原设计使用Φ150 mm连铸坯料轧制外径范围为51~114.3 mm、壁厚范围为3.5~12 mm的无缝钢管。锅炉管行业对于外径38~48 mm、壁厚3.5~8 mm的小口径锅炉管有较大的需求量。研究开发连轧机组大减径率技术,利用Φ150 mm连铸坯料生产外径范围为38~48 mm的无缝钢管,实现使用同一直径坯料生产两组外径范围无缝钢管,钢管的壁厚精度为-7.14%~9.14%。轧制材质为25MnG、15CrMoG和12Cr1MoVG小口径锅炉管时,在钢管的内表面出现了“内直道”缺陷,外表面出现了“青线”缺陷和“皮下裂纹”缺陷,结合变形工艺和材质特性分析了这些缺陷产生的原因,制定解决措施,产品超声探伤合格率由86.82%提高到91.32%。制定了材质为15CrMoG和12Cr1MoVG小口径锅炉管热处理制度,在该工艺制度下,产品的机械性能稳定,能够满足GB/T 5310—2017标准要求。
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林 震(1985-),男,内蒙古赤峰市人,高级工程师,现从事轧钢工艺研究和质量管理工作。
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林 震(1985-),男,内蒙古赤峰市人,高级工程师,现从事轧钢工艺研究和质量管理工作。
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林 震(1985-),男,内蒙古赤峰市人,高级工程师,现从事轧钢工艺研究和质量管理工作。
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36(6):19-24., articleTitle=从MPM到PQF:限动芯棒连轧管机回顾及展望, refAbstract=null), Reference(id=1198567072272838959, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, doi=null, pmid=null, pmcid=null, year=2007, volume=36, issue=2, pageStart=31, pageEnd=34, url=null, language=null, rfNumber=[5], rfOrder=4, authorNames=金如崧, journalName=钢管, refType=null, unstructuredReference=金如崧. PQF、CPS和PAM轧管新工艺浅论[J].
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2009,
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2009,
38(3):46-48., articleTitle=PQF连轧管机组382 mm孔型的设计与开发, refAbstract=null), Reference(id=1198567072486748466, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, doi=null, pmid=null, pmcid=null, year=2010, volume=39, issue=2, pageStart=34, pageEnd=36, url=null, language=null, rfNumber=[8], rfOrder=7, authorNames=卫晓崙, 郭火星, 殷雪峰, journalName=钢管, refType=null, unstructuredReference=卫晓崙, 郭火星, 殷雪峰. PQF连轧管机Φ488 mm孔型的设计与开发[J].
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2010,
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42(1):34-39., articleTitle=包钢Φ460 mm三辊连轧管机组的工艺装备特点, refAbstract=null), Reference(id=1198567073841508662, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, doi=null, pmid=null, pmcid=null, year=2020, volume=49, issue=2, pageStart=45, pageEnd=48, url=null, language=null, rfNumber=[12], rfOrder=11, authorNames=卢立锋, 王庆伟, journalName=钢管, refType=null, unstructuredReference=卢立锋, 王庆伟. PQF三辊连轧管机辊缝调整[J].
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37(1):51-56., articleTitle=Φ159 mm MPM连轧管机的孔型开发与优化, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1198567062936317968, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, xref=1, ext=[AuthorCompanyExt(id=1198567062944706579, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, companyId=1198567062936317968, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 Inner Mongolia Baotou Steel Special Steel Pipe Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198567062957289493, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, companyId=1198567062936317968, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 内蒙古包钢特种钢管有限公司,内蒙古 包头 014010)]), AuthorCompany(id=1198567063066341407, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, xref=2, ext=[AuthorCompanyExt(id=1198567063070535711, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, companyId=1198567063066341407, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Inner Mongolia Baotou Steel Pipe Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198567063078924319, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, companyId=1198567063066341407, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 内蒙古包钢钢管有限公司,内蒙古 包头 014010)])], figs=[ArticleFig(id=1198567067101262010, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=G/P/mN7RoYQJgzOBzAsKlQ==, figureFileBig=0xsmlOavA4L/D7O2Q+m4SA==, tableContent=null), ArticleFig(id=1198567067206119616, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=图1, caption=
连轧机孔型轮廓 α1-脱离角;α4-连接角;O1-槽顶弧圆心;O2-脱离弧圆心;O5-连接弧圆心;R1-槽顶弧半径;R2-脱离弧半径;R5-连接弧半径;E-偏心距;S-辊缝值
, figureFileSmall=G/P/mN7RoYQJgzOBzAsKlQ==, figureFileBig=0xsmlOavA4L/D7O2Q+m4SA==, tableContent=null), ArticleFig(id=1198567067319365827, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=2qsCQOZtKExfvUFnWStWmw==, figureFileBig=u4NCHDLjZrJn78wm2v9v2Q==, tableContent=null), ArticleFig(id=1198567067428417736, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=图2, caption=
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12Cr1MoVG金相照片, figureFileSmall=V9sWGjKXSqYO9wVhW/lBJQ==, figureFileBig=i9Ey5K6gMdH7eJnxWhd3cA==, tableContent=null), ArticleFig(id=1198567067759767766, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=7UdJVNYYTYBeKcyVRjSoKg==, figureFileBig=7W/8NT+dTQWzlzq1RvPASg==, tableContent=null), ArticleFig(id=1198567067868819678, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=图4, caption=
硼砂原因造成的内直道, figureFileSmall=7UdJVNYYTYBeKcyVRjSoKg==, figureFileBig=7W/8NT+dTQWzlzq1RvPASg==, tableContent=null), ArticleFig(id=1198567067977871585, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=taA7QbIEwM2W/EnEbUmdgg==, figureFileBig=9cNWIeBxg2+2100kM6HLJg==, tableContent=null), ArticleFig(id=1198567068082729189, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=图5, caption=
石墨原因造成的内直道, figureFileSmall=taA7QbIEwM2W/EnEbUmdgg==, figureFileBig=9cNWIeBxg2+2100kM6HLJg==, tableContent=null), ArticleFig(id=1198567068162420967, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=P36Hc2k8MrYgQ8GKj6OoaA==, figureFileBig=CgjFISjWtshCyzt0EfJj7A==, tableContent=null), ArticleFig(id=1198567068258889964, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=图6, caption=
端头内折, figureFileSmall=P36Hc2k8MrYgQ8GKj6OoaA==, figureFileBig=CgjFISjWtshCyzt0EfJj7A==, tableContent=null), ArticleFig(id=1198567069382963439, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=aE7YSI8fRLjL0SpnH2EyEg==, figureFileBig=pGeL3POw8TDmNGgtojyUIw==, tableContent=null), ArticleFig(id=1198567069521375476, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=图7, caption=
管体内折, figureFileSmall=aE7YSI8fRLjL0SpnH2EyEg==, figureFileBig=pGeL3POw8TDmNGgtojyUIw==, tableContent=null), ArticleFig(id=1198567069643010296, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=AHDQ+DbDs4j9S4ww4O/QNw==, figureFileBig=EPmfLPbanELLTXjlymeNhg==, tableContent=null), ArticleFig(id=1198567069739479288, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=图8, caption=
修磨前皮下裂纹, figureFileSmall=AHDQ+DbDs4j9S4ww4O/QNw==, figureFileBig=EPmfLPbanELLTXjlymeNhg==, tableContent=null), ArticleFig(id=1198567069840142588, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=Butwfq/8vhf1NwHS9kohOg==, figureFileBig=uXmt22GbftKvvjHuUURl5g==, tableContent=null), ArticleFig(id=1198567070007914750, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=图9, caption=
修磨后皮下裂, figureFileSmall=Butwfq/8vhf1NwHS9kohOg==, figureFileBig=uXmt22GbftKvvjHuUURl5g==, tableContent=null), ArticleFig(id=1198567070091800832, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 坯料 直径 /mm | 最薄毛 管壁厚 /mm | 毛管 外径 /mm | 扩径率 /% | 穿孔机 最大延 伸系数 | 连轧机 外径 /mm | 连轧最 薄壁厚 /mm | 连轧机 最大延 伸系数 | 连轧机 减径率 /% | 连轧减 壁率 /% | 出脱管机 荒管直径 /mm | 最小 外径 /mm |
| 衡阳 | 150 | 13.0 | 160 | 6.67 | 2.94 | 128 | 4.0 | 3.85 | 20.00 | 69.23 | 120 | 48 |
| 包钢 | 150 | 12.2 | 155 | 3.33 | 3.12 | 120 | 3.5 | 4.20 | 25.22 | 71.31 | 112 | 38 |
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衡阳钢管厂Φ89 mm连轧机组与包钢Φ100 mm连轧机组变形工艺对比
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| 名称 | 坯料 直径 /mm | 最薄毛 管壁厚 /mm | 毛管 外径 /mm | 扩径率 /% | 穿孔机 最大延 伸系数 | 连轧机 外径 /mm | 连轧最 薄壁厚 /mm | 连轧机 最大延 伸系数 | 连轧机 减径率 /% | 连轧减 壁率 /% | 出脱管机 荒管直径 /mm | 最小 外径 /mm |
| 衡阳 | 150 | 13.0 | 160 | 6.67 | 2.94 | 128 | 4.0 | 3.85 | 20.00 | 69.23 | 120 | 48 |
| 包钢 | 150 | 12.2 | 155 | 3.33 | 3.12 | 120 | 3.5 | 4.20 | 25.22 | 71.31 | 112 | 38 |
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| 项目 | 空减径 | 第一架 | 第二架 | 第三架 | 第四架 | 第五架 |
| 槽顶弧R1i | 78.00 | 66.20 | 63.33 | 60.12 | 60.00 | 60.00 |
| 脱离弧R2i | | 198.67 | 189.98 | 210.42 | 150.00 | 150.00 |
| 连接弧R5i | 4.20 | 21.85 | 14.58 | 14.51 | 7.55 | 7.55 |
| 辊缝S | 6.00 | 12.00 | 12.00 | 12.00 | 12.00 | 12.00 |
| 偏心距ECC(ECC=R1i-Ri) | 4.00 | 3.09 | 2.00 | 0 | 0 | 0 |
), ArticleFig(id=1198567070364430599, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=表2, caption=
Φ120 mm连轧机孔型参数mm
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| 项目 | 空减径 | 第一架 | 第二架 | 第三架 | 第四架 | 第五架 |
| 槽顶弧R1i | 78.00 | 66.20 | 63.33 | 60.12 | 60.00 | 60.00 |
| 脱离弧R2i | | 198.67 | 189.98 | 210.42 | 150.00 | 150.00 |
| 连接弧R5i | 4.20 | 21.85 | 14.58 | 14.51 | 7.55 | 7.55 |
| 辊缝S | 6.00 | 12.00 | 12.00 | 12.00 | 12.00 | 12.00 |
| 偏心距ECC(ECC=R1i-Ri) | 4.00 | 3.09 | 2.00 | 0 | 0 | 0 |
), ArticleFig(id=1198567070460899595, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
轴向 位置 | 周向测量值/mm | 同一横截面 壁厚平均值 /mm | 同一横截面 壁厚差值 /mm | 同一横截面 壁厚偏差范围 /% |
| 0° | 45° | 90° | 135° | 180° | 225° | 270° | 315° |
| A | 3.30 | 3.25 | 3.28 | 3.30 | 3.45 | 3.56 | 3.58 | 3.62 | 3.42 | 0.37 | -7.14~3.42 |
| B | 3.42 | 3.46 | 3.35 | 3.51 | 3.67 | 3.56 | 3.72 | 3.51 | 3.53 | 0.37 | -4.29~6.28 |
| C | 3.51 | 3.63 | 3.72 | 3.65 | 3.61 | 3.65 | 3.71 | 3.82 | 3.66 | 0.31 | 0.29~9.14 |
| D | 3.45 | 3.42 | 3.53 | 3.67 | 3.54 | 3.81 | 3.75 | 3.73 | 3.61 | 0.39 | -2.29~8.85 |
| E | 3.32 | 3.25 | 3.35 | 3.41 | 3.45 | 3.56 | 3.67 | 3.73 | 3.47 | 0.48 | -7.14~6.57 |
| F | 3.52 | 3.63 | 3.71 | 3.45 | 3.61 | 3.82 | 3.78 | 3.68 | 3.65 | 0.37 | -1.43~9.14 |
| G | 3.35 | 3.45 | 3.43 | 3.51 | 3.56 | 3.61 | 3.71 | 3.65 | 3.53 | 0.36 | -4.28~6.00 |
| H | 3.82 | 3.82 | 3.76 | 3.71 | 3.52 | 3.54 | 3.45 | 3.46 | 3.64 | 0.37 | -1.43~9.14 |
| I | 3.71 | 3.56 | 3.61 | 3.67 | 3.71 | 3.75 | 3.61 | 3.52 | 3.64 | 0.23 | 0.57~7.14 |
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钢管壁厚精度
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轴向 位置 | 周向测量值/mm | 同一横截面 壁厚平均值 /mm | 同一横截面 壁厚差值 /mm | 同一横截面 壁厚偏差范围 /% |
| 0° | 45° | 90° | 135° | 180° | 225° | 270° | 315° |
| A | 3.30 | 3.25 | 3.28 | 3.30 | 3.45 | 3.56 | 3.58 | 3.62 | 3.42 | 0.37 | -7.14~3.42 |
| B | 3.42 | 3.46 | 3.35 | 3.51 | 3.67 | 3.56 | 3.72 | 3.51 | 3.53 | 0.37 | -4.29~6.28 |
| C | 3.51 | 3.63 | 3.72 | 3.65 | 3.61 | 3.65 | 3.71 | 3.82 | 3.66 | 0.31 | 0.29~9.14 |
| D | 3.45 | 3.42 | 3.53 | 3.67 | 3.54 | 3.81 | 3.75 | 3.73 | 3.61 | 0.39 | -2.29~8.85 |
| E | 3.32 | 3.25 | 3.35 | 3.41 | 3.45 | 3.56 | 3.67 | 3.73 | 3.47 | 0.48 | -7.14~6.57 |
| F | 3.52 | 3.63 | 3.71 | 3.45 | 3.61 | 3.82 | 3.78 | 3.68 | 3.65 | 0.37 | -1.43~9.14 |
| G | 3.35 | 3.45 | 3.43 | 3.51 | 3.56 | 3.61 | 3.71 | 3.65 | 3.53 | 0.36 | -4.28~6.00 |
| H | 3.82 | 3.82 | 3.76 | 3.71 | 3.52 | 3.54 | 3.45 | 3.46 | 3.64 | 0.37 | -1.43~9.14 |
| I | 3.71 | 3.56 | 3.61 | 3.67 | 3.71 | 3.75 | 3.61 | 3.52 | 3.64 | 0.23 | 0.57~7.14 |
), ArticleFig(id=1198567070662226188, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| C | Si | Mn | P | S | Al | Ni | Cr | Cu | Mo | Pb | Sn | Ni+Cr+Cu+Mo |
| 0.138 | 0.254 | 0.514 | 0.008 | 0.005 | 0.005 1 | 0.019 | 0.892 | 0.008 | 0.46 | 0.001 | 0.005 | 1.379 |
), ArticleFig(id=1198567070737723663, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550866232963248, language=CN, label=表4, caption=
15CrMoG熔炼成分(质量分数)%
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| C | Si | Mn | P | S | Al | Ni | Cr | Cu | Mo | Pb | Sn | Ni+Cr+Cu+Mo |
| 0.138 | 0.254 | 0.514 | 0.008 | 0.005 | 0.005 1 | 0.019 | 0.892 | 0.008 | 0.46 | 0.001 | 0.005 | 1.379 |
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| C | Si | Mn | P | S | Al | Ni | Cr | Cu | Mo | Pb | Sn | Ni+Cr+Cu+Mo |
| 0.118 | 0.25 | 0.524 | 0.007 | 0.007 | 0.005 | 0.021 | 0.983 | 0.007 | 0.284 | 0.001 | 0.005 | 1.295 |
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12Cr1MoVG熔炼成分(质量分数)%
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| C | Si | Mn | P | S | Al | Ni | Cr | Cu | Mo | Pb | Sn | Ni+Cr+Cu+Mo |
| 0.118 | 0.25 | 0.524 | 0.007 | 0.007 | 0.005 | 0.021 | 0.983 | 0.007 | 0.284 | 0.001 | 0.005 | 1.295 |
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| 材质 | 正火温度 | 回火温度 |
| 15CrMoG | 900~960 | 680~730 |
| 12Cr1MoVG | 980~1 020 | 720~760 |
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GB/T 5310—2017中规定的热处理制度℃
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| 材质 | 正火温度 | 回火温度 |
| 15CrMoG | 900~960 | 680~730 |
| 12Cr1MoVG | 980~1 020 | 720~760 |
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| 材质 | 正火温度 /℃ | 正火时间 /min | 回火温度 /℃ | 回火时间 /min |
| 15CrMoG | 940±10 | 80 | 690±10 | 80 |
| 12Cr1MoVG | 1 000±10 | 80 | 750±10 | 80 |
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15CrMoG与12Cr1MoVG热处理制度
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| 材质 | 正火温度 /℃ | 正火时间 /min | 回火温度 /℃ | 回火时间 /min |
| 15CrMoG | 940±10 | 80 | 690±10 | 80 |
| 12Cr1MoVG | 1 000±10 | 80 | 750±10 | 80 |
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| 材质 | 项目 | 抗拉强度 Rm/MPa | 屈服强度 Rel/MPa | 断后伸长率 (纵向)A/% | 冲击吸收功KV2/J | 硬度HBW |
| 横向 | 纵向 |
| 15CrMoG | GB/T 5310—2017 | 440~640 | ≥295 | ≥21 | ≥40 | ≥27 | 125~170 |
| 实测值 | 459~521 | 345~407 | 30~32 | 43 | 29 | 163~169 |
| 12Cr1MoVG | GB/T 5310—2017 | 470~640 | ≥255 | ≥21 | ≥40 | ≥27 | 135~195 |
| 实测值 | 486~634 | 369~519 | 24~31 | 50 | 35 | 155~190 |
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15CrMoG和12Cr1MoVG机械性能
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| 材质 | 项目 | 抗拉强度 Rm/MPa | 屈服强度 Rel/MPa | 断后伸长率 (纵向)A/% | 冲击吸收功KV2/J | 硬度HBW |
| 横向 | 纵向 |
| 15CrMoG | GB/T 5310—2017 | 440~640 | ≥295 | ≥21 | ≥40 | ≥27 | 125~170 |
| 实测值 | 459~521 | 345~407 | 30~32 | 43 | 29 | 163~169 |
| 12Cr1MoVG | GB/T 5310—2017 | 470~640 | ≥255 | ≥21 | ≥40 | ≥27 | 135~195 |
| 实测值 | 486~634 | 369~519 | 24~31 | 50 | 35 | 155~190 |
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| 项目 | 2022年 | 2023年 累计 |
| 1月 | 2月 | 3月 | 4月 | 5月 | 6月 | 7月 | 8月 | 9月 | 10月 | 11月 | 12月 | 累计 |
| 合格率 | 90.56 | 87.61 | 92.23 | 92.84 | 92.52 | 95.65 | 85.27 | 95.90 | 88.22 | 92.45 | 89.47 | 95.9 | 86.82 | 91.32 |
| 内伤剔除率 | 1.61 | 1.92 | 0.46 | 0.34 | 1.58 | 0 | 1.10 | 3.02 | 6.94 | 2.78 | 6.41 | 3.01 | 7.73 | 2.55 |
| 外伤剔除率 | 7.65 | 9.81 | 7.31 | 6.74 | 2.48 | 0.93 | 13.53 | 0.02 | 4.48 | 3.51 | 3.22 | 0.03 | 4.99 | 4.88 |
| 壁厚剔除率 | 0.18 | 0.66 | 0.0 | 0.08 | 3.42 | 3.43 | 0.10 | 1.06 | 0.36 | 1.26 | 0.90 | 1.06 | 0.46 | 1.25 |
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2022年与2023年超声探伤检查锅炉管质量指标对比(质量分数)%
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| 项目 | 2022年 | 2023年 累计 |
| 1月 | 2月 | 3月 | 4月 | 5月 | 6月 | 7月 | 8月 | 9月 | 10月 | 11月 | 12月 | 累计 |
| 合格率 | 90.56 | 87.61 | 92.23 | 92.84 | 92.52 | 95.65 | 85.27 | 95.90 | 88.22 | 92.45 | 89.47 | 95.9 | 86.82 | 91.32 |
| 内伤剔除率 | 1.61 | 1.92 | 0.46 | 0.34 | 1.58 | 0 | 1.10 | 3.02 | 6.94 | 2.78 | 6.41 | 3.01 | 7.73 | 2.55 |
| 外伤剔除率 | 7.65 | 9.81 | 7.31 | 6.74 | 2.48 | 0.93 | 13.53 | 0.02 | 4.48 | 3.51 | 3.22 | 0.03 | 4.99 | 4.88 |
| 壁厚剔除率 | 0.18 | 0.66 | 0.0 | 0.08 | 3.42 | 3.43 | 0.10 | 1.06 | 0.36 | 1.26 | 0.90 | 1.06 | 0.46 | 1.25 |
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