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    • 10. 发明申请
    • Method and Apparatus For Pulse Welding
    • 脉冲焊接方法与装置
    • US20140175074A1
    • 2014-06-26
    • US14193938
    • 2014-02-28
    • Robert R. DavidsonDavid G. AlmyRichard J. Schuh
    • Robert R. DavidsonDavid G. AlmyRichard J. Schuh
    • B23K9/09
    • B23K9/092B23K9/093
    • A method and system for pulse welding provides an output pulse waveform. The waveform has at least a frequency from a range of available frequencies not limited to harmonic frequencies. The waveform provides power suitable for welding, and has a plurality of background portions alternating with a plurality of peak portions. A transition down occurs from the peak portion to the background portion with a first acceleration and a transition up occurs from the background portion to the peak portion with a second acceleration. At least one of the first and second accelerations are non-zero over at least most of the transition. The waveform is preferably created by switching an inverter. Both accelerations may be non-zero, and each transition may have two accelerations, one negative closer to the peak, and one positive closer to the background. The accelerations may be constant with opposite polarity. Preferably the process is current controlled during the transitions. The process frequency may be fixed or varying.
    • 脉冲焊接的方法和系统提供输出脉冲波形。 该波形至少有一个频率范围内的可用频率不限于谐波频率。 波形提供适合于焊接的功率,并且具有与多个峰部交替的多个背景部分。 从第一加速度的峰部分到背景部分发生转变下降,并且以第二加速度从背景部分到峰部分发生转变。 第一和第二加速度中的至少一个在至少大部分转换中都是非零的。 该波形优选地通过切换逆变器来产生。 两个加速度可以是非零,并且每个转变可以具有两个加速度,一个靠近峰值的加速度,另一个加速度更靠近背景。 加速度可以是相反极性的恒定。 优选地,该过程在过渡期间是电流控制的。 过程频率可以是固定的或变化的。