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    • 2. 发明授权
    • Substance vaporizing apparatus
    • 物质蒸气装置
    • US5150375A
    • 1992-09-22
    • US535615
    • 1990-06-11
    • Yoichiro TabataYoshihiro UedaShigeo UeguriKazuhiko Hara
    • Yoichiro TabataYoshihiro UedaShigeo UeguriKazuhiko Hara
    • H01S3/03
    • H01S3/031
    • A substance vaporizing apparatus which uses a vapor of a substance generated by heating the substance in a gas-filled tube as an exciting medium or an ionizing medium. The apparatus employs an improved container for containing the substance within the gas-filled tube. The improved container suppresses the rate of emission of the vapor of the substance into a discharge space defined by the gas-filled tube to hold the vapor density of the substance at an optimum low value for laser oscillation relative to the buffer gas density in the discharge space. Thus, the mean free path of the atoms of the substance, namely the average distance traveled by the atoms between elastic collisions with the electrons, ions and neutral atoms of the buffer gas, is increased to increase the number of atoms of the subtance excited to a higher energy level, which, consequently, increases laser power and enhances laser beam or ion beam accelerating energy. The employment of segmental discharge electrodes each consisting of a plurality of partial electrodes diametrically distributed in the discharge space of the gas-filled tube enables heating the buffer gas in a substantially uniform diametrical temperature distribution, which enables to increase the length and diameter of the laser medium. The employment of two pulse generating circuits promotes the relaxation of the atoms of the substance from a lower energy level to the ground energy level to enable the next application of a pulse voltage to establish a complete population inversion, which enables the substance vaporizing apparatus to operate at a high efficiency at a high discharge frequency.
    • 6. 发明授权
    • Pulse welding apparatus
    • 脉冲焊接设备
    • US5317116A
    • 1994-05-31
    • US668519
    • 1991-03-27
    • Yoichiro TabataShigeo UeguriYoshihiro UedaMasanori MizunoYoshiaki KatouOsamu Nagano
    • Yoichiro TabataShigeo UeguriYoshihiro UedaMasanori MizunoYoshiaki KatouOsamu Nagano
    • B23K9/073B23K9/09B23K9/095B23K9/10G05F1/08
    • B23K9/1062B23K9/0734B23K9/092B23K9/0953G05F1/08
    • A pulse welding apparatus using a pulse discharge such as a pulse arc welding apparatus and a short-circuit transfer arc welding apparatus. A pulse current waveform control circuit, which controls the pulse arc current so that a desired pulse arc current is supplied to the arc welding power supply for outputting the pulse arc current to the welding load unit, is constructed such that the optimum welding operation may be performed without having to adjust circuit components and modify circuit design. The pulse current waveform control circuit is in the form of a microcomputerized digital circuit which operates under a program to provide a desired pulse arc current. A modification of the program can provide any desired pulse arc currents without changing circuits. The optimum welding current waveform parameters or a target arc length signal is learned in the first welding stage and stored into a memory. An arc length feedback control or a current waveform control is performed under the control of program on the basis of the optimum welding current waveform parameters or the target arc length signal so as to control the faulty separation of globules when magnetic blow occurs and so as to reduce the variation of arc length due to external disturbances occurring at the welding torch so that improved welding quality is ensured under various environments.
    • PCT No.PCT / JP90 / 00246 Sec。 371日期1991年3月27日 102(e)1991年3月27日PCT提交1990年2月27日PCT公布。 公开号WO91 / 01842 日期:1991年2月21日。一种使用脉冲放电的脉冲焊接装置,例如脉冲电弧焊接装置和短路转移电弧焊接装置。 控制脉冲电弧电流的脉冲电流波形控制电路被构造为使得最佳焊接操作可以是最佳焊接操作,该脉冲电流波形控制电路控制脉冲电弧电流,使得向焊接电源提供期望的脉冲电弧电流以向焊接负载单元输出脉冲电弧电流 执行而不必调整电路组件并修改电路设计。 脉冲电流波形控制电路是在程序下操作以提供期望的脉冲电弧电流的微计算机数字电路的形式。 该程序的修改可以提供任何期望的脉冲电弧电流而不改变电路。 在第一焊接阶段学习最佳焊接电流波形参数或目标电弧长度信号,并存储到存储器中。 基于最佳焊接电流波形参数或目标电弧长度信号,在程序控制下执行电弧长度反馈控制或电流波形控制,以便在发生磁场发生时控制球的故障分离,从而 减少由焊枪发生的外部干扰引起的电弧长度的变化,从而确保在各种环境下提高焊接质量。
    • 7. 发明授权
    • Pulse welding apparatus
    • 脉冲焊接设备
    • US5726419A
    • 1998-03-10
    • US571187
    • 1995-12-12
    • Yoichiro TabataShigeo UeguriYoshihiro UedaMasanori MizunoYoshiaki KatoOsamu Nagano
    • Yoichiro TabataShigeo UeguriYoshihiro UedaMasanori MizunoYoshiaki KatoOsamu Nagano
    • B23K9/09G05F1/08
    • B23K9/092B23K9/093G05F1/08
    • In pulse welding apparatus of arc welding or short-circuit transfer type arc welding in which a pulse discharge created on the tip of a wire electrode is utilized to perform welding, when a molten droplet produced on the tip of wire electrode is late to separate from the wire due to variations of welding conditions and external disturbances, the wire-supplying speed at which the wire is supplied to the weld zone changes causing undercut. To prevent this, pulse current supplied to the base metal is divided into a plurality of pulse groups and the average current reaches the maximum peak value at a predetermined time after beginning of outputting the pulses, and the group of pulse currents is of a hill-shape in its envelope in accordance with the separation phenomenon of molten droplet, and the group of pulse currents is arranged to have different pulse period, pulse width, and pulse interval. In sort-circuiting arc welding, the short-circuit and arc are instantly controlled in accordance with the detected arc length or wire-supplying speed. This ensures the separation of the molten droplet and its transfer onto the base metal in regular manner. As a result, the growth and separation of molten droplet is not affected by magnetic blow of arc but is controllable.
    • 在电弧焊接或短路转移型电弧焊接的脉冲焊接装置中,其中利用线电极的尖端产生的脉冲放电来进行焊接,当在线电极的尖端上产生的熔融液滴迟到时, 由于焊接条件和外部干扰的变化引起的电线,将焊丝供给到焊接区域的焊丝供给速度变化,导致底切。 为了防止这种情况,提供给贱金属的脉冲电流被分成多个脉冲组,并且在开始输出脉冲之后的预定时间内平均电流达到最大峰值,并且脉冲电流组是小时 - 根据熔滴的分离现象形成其包络线,并且脉冲电流组被布置为具有不同的脉冲周期,脉冲宽度和脉冲间隔。 在分选电弧焊接中,根据检测到的电弧长度或电线供电速度立即控制短路和电弧。 这样可以确保熔融液滴的分离及其以规则的方式转移到贱金属上。 结果,熔滴的生长和分离不受电弧的磁力冲击的影响,但是是可控的。
    • 8. 发明授权
    • Pulsed arc welding equipment
    • 脉冲电弧焊设备
    • US5406052A
    • 1995-04-11
    • US602232
    • 1990-10-26
    • Masanori MizunoYoshiaki KatouOsamu NaganoYoichiro TabataShigeo UeguriYoshihiro Ueda
    • Masanori MizunoYoshiaki KatouOsamu NaganoYoichiro TabataShigeo UeguriYoshihiro Ueda
    • B23K9/09
    • B23K9/092
    • The welding equipment according to the present invention divides the pulsed electric current fed to a base metal in the course of a welding process into a plural number of pulse groups, performing instantaneous control over the base electric current period and the base electric current value applied to each of the pulse intervals of the individual pulses within such a group of pulsed electric currents and to each of the groups of pulsed electric currents, the pulse peak value and pulse width of each pulse, and such instantaneous control over a short circuit period and an arc period in the course of performance of the short circuiting transfer arc welding process, in accordance with the detected arc length, in such a manner that an ideal target arc length is thereby achieved. The welding equipment is capable of achieving the separation and transfer of molten globules to the base metal with regularity and also reducing the fluctuations in the short circuit period and the arc period in the short circuiting transfer arc welding process, offering the advantage that the equipment can control the growth and separation of molten globules without being affected by the phenomenon of magnetic arc blow of the arc and can achieve improvements on the quality of weldments even if fluctuations should occur in the shape of welded joints and in the position of the earthing point in operation with the actual arc.
    • PCT No.PCT / JP90 / 00244 Sec。 371 1990年10月26日第 102(e)1990年10月26日PCT PCT 1990年2月27日PCT公布。 出版物WO90 / 09856 1990年9月7日。根据本发明的焊接设备将在焊接过程中馈送到母材的脉冲电流分成多个脉冲组,对基本电流周期进行瞬时控制, 施加到这样一组脉冲电流内的各个脉冲的每个脉冲间隔的基极电流值以及脉冲电流组中的每一组脉冲峰值和每个脉冲的脉冲宽度,以及这种瞬时控制 在短路转移电弧焊接工序的过程中,根据检测出的电弧长度,由此实现理想的目标电弧长度。 焊接设备能够有规律地实现熔池与基体金属的分离和转移,并且还可以减少短路转移电弧焊接过程中短路周期和电弧周期的波动,提供设备可以 控制熔融球的生长和分离,而不受电弧磁弧冲击现象的影响,即使在焊接接头的形状和接地点的位置发生波动也可以提高焊接质量 操作与实际弧。