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薄壁不銹鋼管件的內高壓成型方法及其裝置

發布時間:2021-12-16 16:50:07人氣:

一種薄壁不銹鋼管件 的內高壓成型方法及裝置,其特征在于:坯管放入模具成型腔后,兩擠壓頭向坯管進給的同時向坯管內部注入低壓液體并排出坯管內空氣;當兩擠壓頭接觸坯管端面 后,停止低壓液體供給,密封坯管內的液體自動建立起超高的成型壓力,坯管屈服,擴脹成型開始進行;擠壓頭繼續進給,內部壓力繼續增加,成型過程繼續進行, 同時兩斷坯料向擴脹變形處補充,而溢流閥則保持坯管內部壓力恒定,維持成型直至完成,還公開了其裝置,利用零件內部的超高壓力均能自動適應完成,不需要昂 貴的專用超高壓發生機構,具有高效能、低成本的特點,成型后的零件材料減薄量小,強度高的特點,從而提高了管道系統的承壓等級

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