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    • 33. 发明专利
    • Method of manufacturing ultra-thin wall seamless metallic pipe using floating plug
    • 使用浮动插头制造超薄壁无缝金属管的方法
    • JP2010131617A
    • 2010-06-17
    • JP2008308601
    • 2008-12-03
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • HAYASHI CHIHIRO
    • B21C1/22B21C1/28B21C3/16
    • B21C1/22B21C1/24B21C3/00B21C3/16
    • PROBLEM TO BE SOLVED: To propose a method of manufacturing an ultra-thin wall seamless metallic pipe by cold drawing method by which the manufacturable range on the thin-wall side of the metallic pipe can drastically be extended. SOLUTION: In this expanding/drawing method, an inlet-side solid die the diameter of which is expanded, constant or reduced toward the outlet side of finishing from the inlet side of biting and an outlet-side solid die the diameter of which is reduced at least in the vicinity of the inlet of biting are connected to each other and arranged oppositely and a taper type plug the diameter of which is expanded toward the outlet side of the finishing from the inlet side of biting is floated and, in the range of the inlet-side solid die, the wall thickness is reduced while expanding the diameter of the thickness center of a pipe stock between the solid die and the plug and, in the range of the outlet-side solid die, the taper type plug is floated by reducing the outside diameter. Since the manufacture of the ultra-thin wall seamless metallic pipe and long-size pipe making are made possible by the method and rationalization of a process is attained in the respects of yield, efficiency or the like, economical merit is remarkably large. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提出一种通过冷拉拔法制造超薄壁无缝金属管的方法,通过该方法可以显着延长金属管的薄壁侧的可制造范围。 解决方案:在该膨胀/拉伸方法中,入口侧固体模具的直径从咬合入口侧朝向精加工出口侧膨胀,恒定或减小,出口侧固体模具的直径为 其至少在咬入口附近被还原并且相对地布置,并且直径从咬合入口侧朝向精加工的出口侧扩大的锥形塞被浮起,并且在 入口侧固体模具的范围,壁厚减小,同时扩大固体模头和塞子之间的管材的厚度中心的直径,并且在出口侧固体模具的范围内,锥形型 插头通过减小外径而浮起。 由于可以通过该方法制造超薄壁无缝金属管和长管制造,并且在产率,效率等方面达到了工艺的合理化,经济上的优点非常大。 版权所有(C)2010,JPO&INPIT
    • 37. 发明公开
    • MANUFACTURING METHOD FOR ULTRATHIN SEAMLESS METAL PIPE UTILIZING FLOATING PLUG
    • 法制造超薄,无缝金属管使用浮动插头
    • EP2371463A1
    • 2011-10-05
    • EP09830290.4
    • 2009-11-11
    • Sumitomo Metal Industries, Ltd.
    • HAYASHI Chihiro
    • B21C1/22B21C1/28B21C3/16
    • B21C1/22B21C1/24B21C3/00B21C3/16
    • Proposed is a method of producing an ultrathin-wall metal tube by a cold drawing method capable of drastically expanding an available size range toward much thinner side with respect to wall thickness of metal tubes. This is a diameter-expanding drawing method, in which an entry solid die, the diameter of which increases, remains constant or decreases from the engaging entry side toward the finishing exit side, and a delivery solid die, the diameter of which decreases at least in the vicinity of the engaging entry, are arranged in series and in an abutting relation on the same pass line, and a tapered plug, the diameter of which increases from the engaging entry side toward the finishing exit side, is caused to float along the pass line, whereby in the entry solid die region, the wall thickness is reduced while the mid-wall diameter of a hollow shell is being expanded between the solid die and the plug, and in the delivery solid die region, the tapered plug is caused to float by performing reduction working of the outside diameter. This method offers tremendously great economic advantages, because it is possible to produce ultrathin-wall seamless metal tubes and to make longer length tubes, and to realize the rationalization of processes in terms of yield, efficiency and the like.
    • 提议是由能够膨胀大幅度可用大小范围朝向薄得多侧相对于金属管的壁厚的冷拉方法在超薄壁金属管的制造方法。 这是一个扩径绘图方法,其中条目固体,其直径其中,增加,保持不变或从接合入口侧朝向精加工出口侧下降,以及输送固体,其直径其中,减小至少 在接合条目的附近,以在相同的轧制线邻接关系串联布置并且在和锥形插头,其直径从卡合入侧朝向精加工出口侧增加时,被导致沿着浮 轧制线,由此在入口固体的区域中,减小壁厚而空心管坯的中间壁直径被固体中和插头之间扩展,并且在输送固体的区域中,锥形塞引起 通过进行外径的减少工作浮动。 这种方法提供了很大的极大的经济优势,因为它可以生产超薄壁无缝金属管和使较长的长度的管,实现的过程合理化收率,效率等方面。