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    Method of continuous flash butt welding and hydraulic drive of continuous flash butt-welding machine for realization of this method
    4.
    发明授权
    Method of continuous flash butt welding and hydraulic drive of continuous flash butt-welding machine for realization of this method 失效
    连续闪光对焊和连续闪光对焊机的液压驱动方法实现该方法

    公开(公告)号：US4288676A

    公开(公告)日：1981-09-08

    申请号：US4713

    申请日：1979-01-19

    申请人： Sergei I. Kuchuk-Yatsenko ,  Ivan A. Chernenko ,  Mikhail V. Bogorsky ,  Alexandr I. Kulesh ,  Vitaly T. Cherednichok ,  Vladimir I. Tishura

    发明人： Sergei I. Kuchuk-Yatsenko ,  Ivan A. Chernenko ,  Mikhail V. Bogorsky ,  Alexandr I. Kulesh ,  Vitaly T. Cherednichok ,  Vladimir I. Tishura

    IPC分类号： B23K11/04

    CPC分类号： B23K11/04

    摘要： In accordance with the disclosure, the workpieces being welded are brought together by rectilinearly oscillating at least one of them along the line of bringing them together with the amplitude in the movement of the workpiece towards the other workpiece greater than that in the movement of the same workpiece in the direction opposite to the direction towards the other workpiece, voltage is applied to said workpieces for flashing and heating them in the course of bringing them together, and then an upset force is applied to the workpieces. The hydraulic drive adapted to generate the oscillatory rectilinear motion in a continuous flash butt-welding machine includes a hydraulic cylinder with two chambers which provides for moving one of the workpieces being welded with respect to the other and comprises apparatus for feeding hydraulic fluid alternately into either of the chambers of the hydraulic cylinder of the machine, the apparatus being connected with the cylinder through two hydraulic lines. The lines serve alternately one as the inlet line and another as the outlet line and are interconnected by two hydraulic conduits, either of which incorporates an adjustable throttle and a check valve. The check valves are arranged so that either of them by-passes hydraulic fluid from the inlet line into the outlet line. The adjustable throttles are adjusted so that the hydraulic fluid volume admitted into the hydraulic cylinder of the machine to move the workpiece towards the other workpiece is greater than the hydraulic fluid volume admitted thereinto to move the same workpiece in the opposite direction.

    摘要翻译： 根据本公开，被焊接的工件通过沿它们中的至少一个沿直线摆动而被组合在一起，使得工件朝着另一个工件运动的幅度大于其移动中的幅度 工件沿着与朝向另一工件的方向相反的方向工作时，将电压施加到所述工件上以在将它们放在一起的过程中进行闪光和加热，然后对工件施加镦锻力。 适于在连续闪光对焊机中产生振荡直线运动的液压驱动器包括具有两个室的液压缸，其提供用于相对于另一个将待焊接的工件中的一个移动，并且包括用于将液压流体交替地供给到任一 的机器的液压缸的腔室，该装置通过两条液压管线与气缸连接。 这些管线交替地作为入口管线而另一个作为出口管线，并且通过两个液压管道互连，其中任一个包括可调节的节流阀和止回阀。 止回阀被布置成使得它们中的任一个绕过来自入口管线的液压流体到出口管线。 调节可调节流阀，使进入机器的液压缸的液压流体体积朝向另一工件移动，大于其中允许相对于相反方向移动相同工件的液压流体体积。