| 内高压成形理论与技术的新进展 |
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| 引用本文： | 苑世剑,何祝斌,刘钢,王小松,韩聪.内高压成形理论与技术的新进展[J].中国有色金属学报,2011(10). |
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| 作者姓名： | 苑世剑 何祝斌 刘钢 王小松 韩聪 |
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| 作者单位： | 哈尔滨工业大学材料科学与工程学院; |
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| 基金项目： | 国家杰出青年科学基金资助项目(50525516); 国家自然科学基金资助项目(59975021,50375036,50575051) |
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| 摘 要： | 介绍哈尔滨工业大学在内高压成形基础理论、关键技术及工业应用等方面取得的重要进展。在基础理论方面,利用平面应力屈服椭圆描述典型内高压成形过程中应力状态及壁厚变化趋势;揭示变径管内高压成形过程中壁厚分布规律以及多边形截面环向的壁厚分布特点;指明整形阶段圆角充填时存在极限圆角半径;发明了用于测量管材环向力学性能的管材环向拉伸实验方法。在工艺关键技术方面,针对航空航天领域对大直径薄壁复杂管件的需求,发明了Y型薄壁三通管两步成形方法、双层管充液弯曲方法,试制出超薄Y型三通管、整体不锈钢进气道及弯管零件。在工业应用方面,研制了合模力最大达55 MN的工业生产用大型内高压成形机,并成功地用于轿车底盘零件大批量生产。
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| 关 键 词： | 内高压成形 液压成形 塑性变形 应力状态 失稳行为 |
New developments in theory and processes of internal high pressure forming |
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| YUAN Shi-jian,HE Zhu-bin,LIU Gang,WANG Xiao-song,HAN Cong.New developments in theory and processes of internal high pressure forming[J].The Chinese Journal of Nonferrous Metals,2011(10). |
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| Authors: | YUAN Shi-jian HE Zhu-bin LIU Gang WANG Xiao-song HAN Cong |
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| Affiliation: | YUAN Shi-jian,HE Zhu-bin,LIU Gang,WANG Xiao-song,HAN Cong (School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | Important progresses and achievements in fundamental theory,key processes and industrial applications of tube hydroforming realized in engineering research center of hydroforming/harbin institute of technology(ERCH/HIT) were introduced.Typical stress states in tube hydroforming process and the corresponding thickness changing tendency were given on the plane stress yield loci.Thickness changes along the axial direction of tubular part with changeable diameters and the hoop direction of tubular part with rec... |
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| Keywords: | internal high pressure forming(IHPF) hydroforming plastic forming stress state instability behavior |
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