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286 条记录 (耗时 0.012 秒)

    Apparatus for continuous production of spiral pipe
    41.
    发明授权
    Apparatus for continuous production of spiral pipe 失效
    连续生产螺旋管的设备

    公开(公告)号：US3776448A

    公开(公告)日：1973-12-04

    申请号：US3776448D

    申请日：1973-03-26

    申请人： FAY J

    发明人： FAY J

    IPC分类号： B21C37/12 ,  B23K11/08 ,  B23K33/00 ,  B23K29/00

    CPC分类号： B23K33/004 ,  B21C37/122 ,  B21C37/124 ,  B23K11/084 ,  B23K2201/06 ,  B23K2201/16

    摘要： A method and apparatus for continuously producing spiral pipe from sheet material including feeding a strip of the sheet material into a spiral pipe forming machine, continuously deforming a portion of the longitudinal edges of the sheet material so as to bend the edge downwardly toward the axis of the formed pipe and out of the normal plane of the sheet material, forming the sheet material into a spiral tube and bringing the deformed edges into parallel face to face abutting relationship, welding the edges into a seam, and reforming the deformed portion of the sheet material to provide a smooth forged weld.

    摘要翻译： 一种用于从板材连续生产螺旋管的方法和装置，包括将片材的条带进入螺旋管成形机，使片材的纵向边缘的一部分连续变形，使得边缘向下弯曲 形成的管道并且从板材的正常平面出来，将片材材料形成螺旋管并使变形的边缘面对面地抵接，将边缘焊接成接缝，并且将片材的变形部分重新形成 材料提供平稳的锻造焊缝。

    Electron beam welding process and apparatus
    42.
    发明授权
    Electron beam welding process and apparatus 失效
    电子束焊接工艺和设备

    公开(公告)号：US3585351A

    公开(公告)日：1971-06-15

    申请号：US3585351D

    申请日：1969-08-25

    申请人： SMITH CORP A O

    发明人： HINRICHS JOHN F

    IPC分类号： B23K15/00 ,  B23K20/04

    CPC分类号： B23K20/04 ,  B23K15/006 ,  B23K2201/06

    摘要： A tubular metal blank having two longitudinally opposed edges welded to form a seam by a process and apparatus therefor including heating the edges to a welding temperature at a first station and pressing the edges together at the first station to initially weld the edges thereof and provide extruded metal outwardly of the seam provided by the weld. Then the weld seam and extruded metal is electron beam welded at a second station with the initial weld being refined by the electron beam welding and undercutting in the weld being prevented by the formation of the extruded metal from the weld area. Additional metal may be added prior to the electron beam welding station to provide additional material at the weld seam to overcome the problem of undercutting.