| 引用本文: | 马世博,赵军,马进.旋转翼截齿组合温挤压精密成形工艺研究[J].材料科学与工艺,2011,19(1):127-130.DOI:10.11951/j.issn.1005-0299.20110125. |
| MA Shi-bo,ZHAO Jun,MA Jin.Study on precise forming by combined warm extrusion for mine pick with rotary-wing[J].Materials Science and Technology,2011,19(1):127-130.DOI:10.11951/j.issn.1005-0299.20110125. |
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| 摘要: |
| 旋转翼类截齿由于径向旋转翼难以充填,常规挤压工艺下金属不易充满模具型腔.本文针对该类工件特点提出了镦挤联合径向挤压的组合挤压新工艺,通过在模具闭合后施加径向挤压的方法,促进金属的径向流动,为径向难以充填的复杂零件成形提供了新思路,基于该方法为带旋转翼类截齿的生产提出了新工艺方案,通过数值模拟和实验研究表明该工艺方案不仅保证了成形质量,而且降低了成形力. |
| 关键词: 旋转翼截齿 精密成形 镦挤 径向挤压 组合温挤压 |
| DOI：10.11951/j.issn.1005-0299.20110125 |
| 分类号:TG376.5 |
| 基金项目:河北省攻关计划项目(20061107001);国家科技部中小企业创新基金项目(09C26211300278) |
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| Study on precise forming by combined warm extrusion for mine pick with rotary-wing |
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MA Shi-bo1, ZHAO Jun1, MA Jin2
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1.College of Mechanical Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China;2.Yanshan University HengYuan Hi-Tech Co.LTD Hebei Qinhuangdao 066004 China
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| Abstract: |
| Since it is difficult to fill the rotary-wings of the pick with rotary-wing type,it is not easy to fill the die assembly with metal under conventional extrusion process.This paper presents a new technology of co-extrusion combining the upset-extrusion with radial-extrusion in the light of the characteristics of such work piece.This technology applies the method of radial-extrusion after die closure to advance radial metal flow and provides a new idea to form the complicated radial parts which are difficult to fill in.Based on above methods,a new technology program is presented for the production of rotary-wing type pick.Numerical simulation and experimental studies show that the technology program not only ensures the forming quality,but also reduces the forming force. |
| Key words: Pick with rotary-wing Precise forming Upset-extrusion Radial-extrusion Combined warm extrusion |
