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    • 2. 发明申请
    • IMPACT EXTRUSION METHOD, TOOLING AND PRODUCT
    • 冲击挤压方法,工具和产品
    • US20160214156A1
    • 2016-07-28
    • US14983025
    • 2015-12-29
    • Betty Jean PILONPeter STATHOPOULOSGeorgi GEORGIEVBenjamin Joseph PILON
    • Betty Jean PILONPeter STATHOPOULOSGeorgi GEORGIEVBenjamin Joseph PILON
    • B21C23/18
    • B21C23/18B21C23/186B21C25/04B21C26/00B21D26/049
    • A hollow preform impact extruded from a metal billet to produce a progressing wall at a transition wall thickness. An axially forward portion of the progressing wall is ironed by extrusion past an extrusion point to form a sidewall portion of a lesser thickness. Extruding is stopped while some of the billet remains to form the closed bottom end. The preform has a bottom portion, a sidewall portion and a transition wall portion extending between the bottom portion and the sidewall portion. The transition wall portion is thicker than the sidewall portion and can be formed into at least part of the rim of an expansion shaped container. An impact extrusion punch has a central axis, an axially forward, impact surface for impacting metal to be extruded, a transition region for directing material displaced by the impact surface and a rear extrusion point for ironing material extruded past the transition region.
    • 从金属坯料挤出的中空预制件冲击,以产生过渡壁厚度的前进壁。 前进壁的轴向向前部分通过挤出经过挤压点而被熨烫以形成较小厚度的侧壁部分。 挤压停止,而一些坯料保持形成封闭的底端。 预成型件具有在底部和侧壁部分之间延伸的底部,侧壁部分和过渡壁部分。 过渡壁部分比侧壁部分厚,并且可以形成为膨胀形容器的边缘的至少一部分。 冲击挤压冲头具有中心轴线,轴向向前冲击表面,用于冲击被挤出的金属,用于引导被冲击表面移动的材料的过渡区域和用于挤压过渡区域的熨烫材料的后挤压点。