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公开(公告)号：US4503316A
公开(公告)日：1985-03-05
申请号：US407489
申请日：1982-08-12
CPC分类号： B23K9/1006 , B23K9/06 , B23K9/1075
摘要： A welding DC power supply system suitable for consumable or non-consumable electrode welding, including plural inverter units for converting a first direct current into an alternate current and for rectifying the alternate current to produce an output of a second direct current; a circuit connecting the output of terminals of the inverter units in parallel; a detection circuit for detecting the total output current of the inverter units; and a circuit for varying the number of operating inverter units according to the value of the detected total output current. According to other aspects of the invention, the power supply system is further provided with a phase control means for controlling the phases of alternate currents produced by the respective inverter units, or means for selectively actuating a particular inverter unit or units in a short circuit period of large current in dip transfer welding, or feedback means for suppressing the current in a controlled timing in the final stage of each short circuit period to prevent spattering as caused by bursting rupture of the large short circuit current.
摘要翻译： 一种焊接直流电源系统，适用于消耗或不消耗电极焊接，包括多个逆变器单元，用于将第一直流电转换为交流电流，并用于整流交流电流以产生第二直流电流; 并联连接逆变器单元的端子的输出的电路; 用于检测逆变器单元的总输出电流的检测电路; 以及用于根据检测到的总输出电流的值来改变操作的逆变器单元的数量的电路。 根据本发明的其它方面，电源系统还具有用于控制由各个逆变器单元产生的交流电流的相位的相位控制装置，或用于在短路周期内选择性地致动特定逆变器单元的装置 或用于在每个短路周期的最后阶段抑制电流的反馈装置，以防止由大的短路电流的爆裂破裂引起的飞溅。
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62.发明授权
公开(公告)号：US4492841A
公开(公告)日：1985-01-08
申请号：US485804
申请日：1983-04-18
申请人： Henry B. Delius
发明人： Henry B. Delius
摘要： A control system for air-carbon arc metal removal in which the arc is automatically controlled and in which the arc power is produced by either a constant potential or constant current power source. For a constant potential source, the arc current is maintained at a predetermined value by sensing the magnitude of the arc current and for a constant current source the arc voltage is maintained at a predetermined value by sensing the magnitude of the arc voltage. The presence of an arc current above a threshold is sensed for a predetermined interval to provide relative motion between the workpiece carriage and the electrode. If the electrode arc current drops below a predetermined threshold, a low current sensing circuit is actuated. If the arc current remains below the threshold for a predetermined time interval, the carriage travel is terminated. If the arc current remains below the threshold for longer than a predetermined amount of time, the electrode power is turned off. In addition, if the arc voltage drops or remains below a threshold for a predetermined time period, the electrode power is also turned off.
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公开(公告)号：US4123646A
公开(公告)日：1978-10-31
申请号：US656741
申请日：1976-02-09
申请人： Henry J. Keinanen
发明人： Henry J. Keinanen
CPC分类号： B23K9/0678
摘要： This disclosure relates to an arc welding system primarily intended to replace present systems utilizing an inert gas atmosphere in which the welding takes place. It is proposed to provide a high voltage, low power ignition supply to produce an arc across a spark gap between electrodes and thus provide an ionized atmosphere in which a welding arc may be produced from a low voltage high power main power source. The main power source may include a capacitor which is constantly charged between actuation of the ignition circuit.
摘要翻译： 本公开涉及一种电弧焊接系统，主要用于利用其中发生焊接的惰性气体气氛来代替现有系统。 建议提供一种高电压低功率点火电源，以在电极之间的火花间隙产生电弧，从而提供可从低压大功率主电源产生焊接电弧的电离气氛。 主电源可以包括在点火电路的致动之间恒定地充电的电容器。
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公开(公告)号：US3995137A
公开(公告)日：1976-11-30
申请号：US455406
申请日：1974-03-27
CPC分类号： B23K9/073 , B23K9/0738
摘要： An AC arc welder which comprises means for detecting the welding current, a comparison circuit for generating logical output signals by comparing the output voltage or output current of the welding current detecting means with the reference voltage or reference current from a reference voltage generating means, digital means for generating logical output signals by performing adding operation or subtracting operation in response to the logical output signal, current supplying means for supplying the output current whose common ratio becoming the geometrical series of approximately m(m = 1, 2, 3 . . . ), and switching means for on and off- controlling the output of the current supplying means in response to the logical output signals of the digital means, thus forming a current feedback loop, whereby the output current from the current supplying means can be changed minutely, thus ensuring stabilized control characteristics.
摘要翻译： 一种交流电弧焊机，包括用于检测焊接电流的装置，用于通过将焊接电流检测装置的输出电压或输出电流与参考电压产生装置的参考电压或参考电流进行比较来产生逻辑输出信号的比较电路，数字 用于通过响应于逻辑输出信号执行加法运算或减法运算来产生逻辑输出信号的装置，用于提供输出电流的电流供应装置，该输出电流的共同比率成为几乎为m（m = 1,2,3，...， ）和开关装置，用于响应于数字装置的逻辑输出信号对电流供应装置的输出进行开和关控制，从而形成电流反馈回路，由此来自电流供应装置的输出电流可以被精确地改变 ，从而确保稳定的控制特性。
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公开(公告)号：US3965329A
公开(公告)日：1976-06-22
申请号：US494596
申请日：1974-08-05
CPC分类号： B23K9/0286 , B23K10/006 , B23K9/09 , B23K9/095 , B23K9/127 , B23K9/30
摘要： A process and system for welding of the tungsten inert gas (TIG) type is described. A welding torch is mounted on a mechanism which provides for motion of the torch with respect to the work (a pipe being welded) in three different directions. Movement in each direction is electronically controlled so as to obtain preset magnitudes of oscillation of the torch, both vertically and laterally with respect to the work. The vertical oscillation is provided by following the pulsating arc current in accordance with a preselected control function. In addition, the system and process provides for control of substantially all of the parameters affecting the formation of the weld in order to produce improved weldments.
摘要翻译： 描述了用于焊接钨惰性气体（TIG）类型的工艺和系统。 焊枪安装在提供手电筒相对于工件（被焊接的管）在三个不同方向上的运动的机构上。 电子控制每个方向的运动，以便相对于工件垂直和横向获得割炬的预设振幅。 根据预先选择的控制功能，跟随脉动电弧电流来提供垂直振荡。 此外，该系统和工艺提供了对焊接形成的几乎所有参数的控制，以便产生改进的焊件。
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66.发明授权
公开(公告)号：US3875367A
公开(公告)日：1975-04-01
申请号：US34781773
申请日：1973-04-04
发明人： TANAKA MASARU
摘要： An AC power source voltage regulator is disclosed in which the instantaneous AC power source voltage is detected by a filter and a phase shift circuit, and the output voltage of the filter is compared by a comparator with a reference voltage. A pulse generator is actuated to give the output pulse in response to the output of the comparator and of the output of a slope regulating circuit so that in response to the output pulse a thyristor inserted in a power source circuit may be triggered.
摘要翻译： 公开了一种AC电源电压调节器，其中瞬时AC电源电压由滤波器和相移电路检测，并且滤波器的输出电压由具有参考电压的比较器进行比较。 激励脉冲发生器以响应于比较器的输出和斜率调节电路的输出而产生输出脉冲，使得响应于输出脉冲，可以触发插入电源电路中的晶闸管。
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公开(公告)号：US3845344A
公开(公告)日：1974-10-29
申请号：US39541273
申请日：1973-09-10
申请人： BOEHLER & CO AG GEB
发明人： RAINER R
摘要： A safe, convenient ignition arrangement is described for a ''''cold'''' plasma burner adapted, e.g., to effect a finishing surface-hardening operation on a grounded metallic workpiece. Argon or other plasma-forming gas is subjected to an electromagnetic field in an elongated ionization chamber. The resulting ionized gas passes through a working gap formed between an output nozzle of the conductive chamber and an elongated electrode mounted axially in the chamber. A remotely located switch is operative to complete an electrical path to ground through the gap and the electrode, thereby igniting the ionized gas.
摘要翻译： 描述了一种安全，方便的点火装置，用于“冷”等离子体燃烧器，其适于例如在接地的金属工件上进行精加工表面硬化操作。 氩或其他等离子体形成气体在细长电离室中经受电磁场。 所产生的电离气体通过形成在导电室的输出喷嘴和轴向安装在腔室中的细长电极之间的工作间隙。 远程定位的开关用于完成通过间隙和电极的接地电路，从而点燃电离气体。
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68.发明授权
公开(公告)号：US3813594A
公开(公告)日：1974-05-28
申请号：US35396473
申请日：1973-04-24
申请人： UNION CARBIDE CORP
发明人： TOTH T
摘要： A magnetically controlled arc working power supply having a current control circuit with means for automatically pulsing the control current to produce a pulsating DC output current at an adjustable rate within a frequency range of 1-20 cps.
摘要翻译： 一种磁控电弧工作电源，具有电流控制电路，该电流控制电路具有用于自动脉冲控制电流以在1-20cps的频率范围内以可调速率产生脉动直流输出电流的装置。
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公开(公告)号：US3639723A
公开(公告)日：1972-02-01
申请号：US3639723D
申请日：1970-06-04
发明人： KELLER HORST , HAHN GUNTER
CPC分类号： B23K9/1037
摘要： A welding control prevents crater formation at the beginning or end of a welding operation by obtaining a constant increase and decrease in the welding current at the beginning and end of the welding operation.
摘要翻译： 焊接控制通过在焊接操作的开始和结束时获得焊接电流的恒定增加和减小来防止在焊接操作的开始或结束时形成火山口。
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