Article(id=1187088798786662558, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187088798216241684, articleNumber=1009-5438(2022)04-0041-05, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1647100800000, receivedDateStr=2022-03-13, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1760953624674, onlineDateStr=2025-10-20, pubDate=1661356800000, pubDateStr=2022-08-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1760953624674, onlineIssueDateStr=2025-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1760953624674, creator=13701087609, updateTime=1760953624674, updator=13701087609, issue=Issue{id=1187088798216241684, tenantId=1146029695717560320, journalId=1185652524569653253, year='2022', volume='48', issue='4', 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=1760953624537, creator=13701087609, updateTime=1760953945042, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1187090142570365089, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187088798216241684, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1187090142570365090, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187088798216241684, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=41, endPage=45, ext={EN=ArticleExt(id=1187340472428147291, articleId=1187088798786662558, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Development of 500 MPa High-performance Cold Stamping Automobile Axle Housing Steel, columnId=1187340471245357385, journalTitle=Science & Technology of Baotou Steel, columnName=Quality of Variety and Experiment and Research, runingTitle=null, highlight=null, articleAbstract=
In the paper, the production technology and technological improvement for 500 MPa cold stamping automobile axle housing steel plate are elaborated, the chemical components of Nb, Ti, Cr and Mo as main strengthening elements are designed as well as a series of whole production technology including smelting, continuous casting, heating, rolling and cooling is formulated. The steel plate is with such comprehensive properties as high strength and ductility and toughness, complex cold stamping without cracking as well as small thickness fluctuation on one plate and anisotropy. Its production technology is mature and stable so that the probability of cracking in cold stamping process is greatly reduced, which could meet the technical requirements of automobile axle housing steel and the processing cost is reduced.
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文章阐述了500 MPa级冷冲压汽车桥壳用钢板的生产工艺及技术改进,设计了以铌钛铬钼为主要强化元素的化学成分,制定了包括冶炼、连铸、加热、轧制、冷却等在内的一系列完整的生产工艺。该钢板具有强度高、塑韧性高、复杂的冷冲压不开裂和同板差小及各向异性小等综合特性,生产工艺成熟且稳定,极大程度降低了冷冲压成形过程中的开裂几率,满足汽车桥壳用钢技术要求,降低了加工成本。
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高 军(1982-),男,内蒙古鄂尔多斯市人,高级工程师,现从事板材产品研发、技术及管理工作。
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高 军(1982-),男,内蒙古鄂尔多斯市人,高级工程师,现从事板材产品研发、技术及管理工作。
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DWTT落锤撕裂试验断口形貌图, figureFileSmall=h0cSQem3zmJQa1my4LCY+Q==, figureFileBig=3btIkSdWWCrEp4Vje786HA==, tableContent=null), ArticleFig(id=1187340695544148104, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088798786662558, language=EN, label=null, caption=null, figureFileSmall=w2lPiRxuxIdLFet9lbJRpA==, figureFileBig=21x3Pf22On1ZF9dRwbbDpw==, tableContent=null), ArticleFig(id=1187340695611256969, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187088798786662558, language=CN, label=图8, caption=
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| 项目 | ReH/MPa | Rm/MPa | A/% | 弯曲180°(B=30 mm) | 冲击功(0 ℃)KV2/J |
| 要求 | 520~550 | 580~770 | ≥18 | d=a | ≥47 |
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力学性能
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| 项目 | ReH/MPa | Rm/MPa | A/% | 弯曲180°(B=30 mm) | 冲击功(0 ℃)KV2/J |
| 要求 | 520~550 | 580~770 | ≥18 | d=a | ≥47 |
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| 项目 | C | Si | Mn | P | S | Nb | Ti | Cr | Mo | Als |
| 要求 | 0.080~0.100 | ≤0.45 | ≤1.70 | ≤0.02 | ≤0.020 | ≤0.06 | ≤0.020 | | | ≥0.020 |
| 设计 | 0.085~0.095 | 0.01~0.20 | 1.45~1.55 | ≤0.01 | ≤0.002 | 0.04~0.05 | 0.006~0.012 | 0.15~0.25 | 0.10~0.17 | 0.020~0.035 |
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化学成分设计(质量分数) %
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| 项目 | C | Si | Mn | P | S | Nb | Ti | Cr | Mo | Als |
| 要求 | 0.080~0.100 | ≤0.45 | ≤1.70 | ≤0.02 | ≤0.020 | ≤0.06 | ≤0.020 | | | ≥0.020 |
| 设计 | 0.085~0.095 | 0.01~0.20 | 1.45~1.55 | ≤0.01 | ≤0.002 | 0.04~0.05 | 0.006~0.012 | 0.15~0.25 | 0.10~0.17 | 0.020~0.035 |
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| 编号 | 夹杂物/级 | 晶粒度 /级 | 带状组织 /级 | 组织 |
| A类粗系 | A类细系 | B类粗系 | B类细系 | C类粗系 | C类细系 | D类粗系 | D类细系 |
| T | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 1.0 | 0 | 12 | 0.5 | B粒+PF |
| Z | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 1.0 | 0 | 12 | 0.5 | B粒+PF |
| W | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 1.0 | 0 | 12 | 1.0 | B粒+PF |
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500 MPa冷压桥壳钢金相检验结果
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| 编号 | 夹杂物/级 | 晶粒度 /级 | 带状组织 /级 | 组织 |
| A类粗系 | A类细系 | B类粗系 | B类细系 | C类粗系 | C类细系 | D类粗系 | D类细系 |
| T | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 1.0 | 0 | 12 | 0.5 | B粒+PF |
| Z | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 1.0 | 0 | 12 | 0.5 | B粒+PF |
| W | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 1.0 | 0 | 12 | 1.0 | B粒+PF |
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| 位置 | 实测值1 | 实测值2 | 实测值3 |
| 头部 | 12.27 | 12.31 | 12.25 |
| 尾部 | 12.11 | 12.19 | 12.13 |
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500 MPa冷压汽车桥壳钢厚度实测值 mm
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| 位置 | 实测值1 | 实测值2 | 实测值3 |
| 头部 | 12.27 | 12.31 | 12.25 |
| 尾部 | 12.11 | 12.19 | 12.13 |
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| 项目 | ReH/MPa | Rm/MPa | A/% | 冲击温度/℃ | KV2/J | 冷弯曲(D=a) |
| 横向值 | 534 | 622 | 23 | -40 | 139 | 189 | 178 | 对折完好 |
| 纵向值 | 541 | 627 | 23 | -40 | 147 | 191 | 201 | 对折完好 |
| 目标要求 | 520~550 | 580~770 | ≥18 | 0 | ≥40 | ≥40 | ≥40 | 完好 |
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500 MPa冷压汽车桥壳钢力学性能
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| 项目 | ReH/MPa | Rm/MPa | A/% | 冲击温度/℃ | KV2/J | 冷弯曲(D=a) |
| 横向值 | 534 | 622 | 23 | -40 | 139 | 189 | 178 | 对折完好 |
| 纵向值 | 541 | 627 | 23 | -40 | 147 | 191 | 201 | 对折完好 |
| 目标要求 | 520~550 | 580~770 | ≥18 | 0 | ≥40 | ≥40 | ≥40 | 完好 |
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