不具冷却系统下高强钢BR1500HS的热冲压成形质量
研究工艺参数包括成形温度、模具温度和压边力对热冲压成形质量的影响.针对方盒形件热冲成形进行实验研究.由于热冲压成形质量对压边力具有很高的敏感性,采用液压缸设计压边力精确控制系统,采用该系统可使所施加压边力精度达到±10N.实验结果表明,当成形温度为850℃左右,热冲压件内部微观组织为马氏体和贝氏体混合相,而当成形温度为550℃时,其微观组织主要为珠光体组织.当模具温度从200℃降低至环境温度时,热冲压件的抗拉强度从1550MPa增加至1750 MPa.通过实验确定了最优压边力1.62 MPa可避免热冲压件起皱和破裂....
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Published in | 中国有色金属学报(英文版) Vol. 22; no. z2; pp. 542 - 547 |
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Main Authors | , , |
Format | Journal Article |
Language | Chinese |
Published |
哈尔滨工业大学 机电工程学院,哈尔滨,150001
2012
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Subjects | |
Online Access | Get full text |
ISSN | 1003-6326 |
DOI | 10.1016/S1003-6326(12)61758-0 |
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Abstract | 研究工艺参数包括成形温度、模具温度和压边力对热冲压成形质量的影响.针对方盒形件热冲成形进行实验研究.由于热冲压成形质量对压边力具有很高的敏感性,采用液压缸设计压边力精确控制系统,采用该系统可使所施加压边力精度达到±10N.实验结果表明,当成形温度为850℃左右,热冲压件内部微观组织为马氏体和贝氏体混合相,而当成形温度为550℃时,其微观组织主要为珠光体组织.当模具温度从200℃降低至环境温度时,热冲压件的抗拉强度从1550MPa增加至1750 MPa.通过实验确定了最优压边力1.62 MPa可避免热冲压件起皱和破裂. |
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AbstractList | 研究工艺参数包括成形温度、模具温度和压边力对热冲压成形质量的影响.针对方盒形件热冲成形进行实验研究.由于热冲压成形质量对压边力具有很高的敏感性,采用液压缸设计压边力精确控制系统,采用该系统可使所施加压边力精度达到±10N.实验结果表明,当成形温度为850℃左右,热冲压件内部微观组织为马氏体和贝氏体混合相,而当成形温度为550℃时,其微观组织主要为珠光体组织.当模具温度从200℃降低至环境温度时,热冲压件的抗拉强度从1550MPa增加至1750 MPa.通过实验确定了最优压边力1.62 MPa可避免热冲压件起皱和破裂. |
Author | 雷成喜 邢忠文 刘红生 |
AuthorAffiliation | 哈尔滨工业大学 机电工程学院,哈尔滨,150001 |
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Author_FL | LIU Hong-sheng LEI Cheng-xi XING Zhong-wen |
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DocumentTitle_FL | Hot formation quality of high strength steel BR1500HS for hot stamping without cooling system |
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Keywords | 高强钢 马氏体 high strength steel microstructure 热冲压 微观组织 hot stamping cooling system 冷却系统 martensite |
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Title | 不具冷却系统下高强钢BR1500HS的热冲压成形质量 |
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