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1.发明授权Plasma arc welding method and apparatus in which a swirling flow is imparted to a plasma gas to stabilize a plasma arc 失效等离子弧焊接方法和装置，其中使等离子体气体产生旋流以稳定等离子体电弧
公开(公告)号：US5734144A
公开(公告)日：1998-03-31
申请号：US525530
申请日：1995-09-12
CPC分类号： B23K10/02
摘要： There is provided a plasma arc welding method, characterized in that a portion of a front side workpiece material is heated and melted by a plasma arc to form a molten pool thereat, that the molten pool is held not to fall or drop under a surface tension acting thereto and is brought into contact with a portion of a rear side workpiece material under a pressure which is exerted by the plasma arc and/or a shielding gas, further that the portion of the said rear workpiece material is brought into a molten state by a thermal conduction thereto so that the two workpiece materials may be welded together, and that a swirling flow is imparted to a plasma gas of the plasma arc. There is also provided a plasma welding apparatus for using the above mentioned plasma arc welding method, characterized in that the apparatus comprises: a plasma torch which has a plasma flushing outlet for swirling and flushing a plasma gas of the plasma arc around an electrode therefor.
摘要翻译： PCT No.PCT / JP94 / 00484 Sec。 371 1995年9月12日第 102（e）日期1995年9月12日PCT 1994年3月25日PCT公布。 公开号WO94 / 22630 PCT 日期：1994年10月13日提供了一种等离子体电弧焊接方法，其特征在于，前面工件材料的一部分被等离子体电弧加热熔化，形成熔池，熔池保持不下落， 在作用于其上的表面张力下落下，并在由等离子弧和/或保护气体施加的压力下与后侧工件材料的一部分接触，此外，所述后工件材料的部分被带入 通过其导热而进入熔融状态，使得两个工件材料可以焊接在一起，并且对等离子体电弧的等离子体气体赋予旋转流。 还提供了一种使用上述等离子体电弧焊接方法的等离子体焊接装置，其特征在于，该装置包括：等离子体焰炬，其具有等离子体冲洗出口，用于在其电极周围旋转和冲洗等离子体电弧的等离子体气体。
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公开(公告)号：US5225658A
公开(公告)日：1993-07-06
申请号：US697871
申请日：1991-05-09
申请人： Yoshihiro Yamaguchi , Iwao Kurokawa
发明人： Yoshihiro Yamaguchi , Iwao Kurokawa
CPC分类号： H05H1/36 , B23K10/006 , B23K9/06
摘要： In a plasma arc cutter and a method of controlling the same, a rise compensating circuit (39) and a shift compensating circuit (44) both composed of a charging and discharging capacitor and a resistor are respectively inserted in parallel between an electrode-side connection (21) and a nozzle-side connection (35) and between the electrode-side connection (21) and a workpiece-side connection (34), and a diode (33) is provided on the workpiece-side connection in such a manner as to be inserted between a connecting point (36) of the nozzle-side connection and a connecting point (43) of the shift compensating circuit. A detector (31) for controlling a current is provided and a detector (32) for detecting a shift is provided on the workpiece-side connection. In addition, to effect cutting after boring, at least one plasma torch (14a) for boring and at least one plasma torch (14b) for cutting are provided. Furthermore, the voltage between an electrode (14) and a workpiece (17) or between a nozzle (15) and the workpiece (17) is detected, and the power source is stopped when that voltage exceeds a predetermined value.
摘要翻译： 在等离子体电弧切割机及其控制方法中，分别将由充放电电容器和电阻器组成的上升补偿电路（39）和移位补偿电路（44）并联连接在电极侧连接 （21）和喷嘴侧连接部（35）之间并且在电极侧连接部（21）和工件侧连接部（34）之间，并且在工件侧连接部上以这种方式设置二极管 被插入在喷嘴侧连接的连接点（36）和移动补偿电路的连接点（43）之间。 设置用于控制电流的检测器（31），并且在工件侧连接上设置用于检测变速的检测器（32）。 此外，为了在钻孔之后进行切割，提供至少一个用于钻孔的等离子体焰炬（14a）和用于切割的至少一个等离子体焰炬（14b）。 此外，检测电极（14）和工件（17）之间或喷嘴（15）与工件（17）之间的电压，并且当电压超过预定值时停止电源。
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公开(公告)号：USD417459S
公开(公告)日：1999-12-07
申请号：US93353
申请日：1998-09-09
申请人： Toshiya Shintani , Yosuke Imai , Iwao Kurokawa , Yoshitaka Niigaki , Toru Shiina
设计人： Toshiya Shintani , Yosuke Imai , Iwao Kurokawa , Yoshitaka Niigaki , Toru Shiina
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公开(公告)号：USD446795S1
公开(公告)日：2001-08-21
申请号：US29128160
申请日：2000-08-21
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公开(公告)号：USD414788S
公开(公告)日：1999-10-05
申请号：US93354
申请日：1998-09-09
申请人： Toshiya Shintani , Yosuke Imai , Iwao Kurokawa , Yoshitaka Niigaki , Toru Shiina
设计人： Toshiya Shintani , Yosuke Imai , Iwao Kurokawa , Yoshitaka Niigaki , Toru Shiina
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公开(公告)号：US5521350A
公开(公告)日：1996-05-28
申请号：US318608
申请日：1994-10-06
申请人： Yozo Nishi , Iwao Kurokawa
发明人： Yozo Nishi , Iwao Kurokawa
CPC分类号： B23K10/006 , B23K9/0953 , B23K9/287
摘要： A stand-off control apparatus for plasma processing machines which is capable of maintaining an optimum stand-off even when a processing speed varies. In a stand-off control apparatus for plasma processing machines which is provided with a microcomputer (4) for maintaining an optimum stand-off (h.sub.0) by moving a torch toward/away from a work so that an independently inputted arc voltage (V) agrees with a speed-corrected target arc voltage (V.sub.O(F)) obtained by correcting a target arc voltage (V.sub.O), which is stored in advance, for an independently inputted processing speed (F), the microcomputer (4) determines at the time of varying a processing speed (F) whether the speed is being accelerated, being decelerated or being kept unchanged, and provides that the speed-corrected target arc voltage (V.sub.O(F)) for the respective case is applied after the lapse of a corresponding delay time (.DELTA.t) which is independently stored.
摘要翻译： 一种用于等离子体处理机器的对立控制装置，其即使在处理速度变化时也能够保持最佳间隔。 在用于等离子体处理机的对位控制装置中，其具有通过将工件朝向/远离工件移动来保持最佳支座（h0）的微型计算机（4），从而独立输入的电弧电压（V） 与通过校正预先存储的独立输入的处理速度（F）获得的目标电弧电压（VO）获得的速度校正的目标电弧电压（VO（F））一致，微计算机（4）在 改变处理速度（F）的时间，速度是否被加速，减速或保持不变，并且规定在经过一个时间之后应用用于各种情况的速度校正的目标电弧电压（VO（F）） 独立存储的相应延迟时间（DELTA t）。
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公开(公告)号：USD451113S1
公开(公告)日：2001-11-27
申请号：US29135711
申请日：2001-01-18
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8.发明授权Method and apparatus for spot welding a work having a plurality of welding materials placed on top of each other by boring a hole to release vapors 失效用于通过钻孔将多个焊接材料放置在彼此顶部的工件进行点焊以释放蒸气的方法和装置公开(公告)号：US06255618B1
公开(公告)日：2001-07-03
申请号：US09355800
申请日：1999-08-03
申请人： Toshiya Shintani , Yohsuke Imai , Yoshitaka Niigaki , Iwao Kurokawa , Kengo Kamiya , Hideto Uematsu
发明人： Toshiya Shintani , Yohsuke Imai , Yoshitaka Niigaki , Iwao Kurokawa , Kengo Kamiya , Hideto Uematsu
IPC分类号： B23K1000
CPC分类号： B23K10/02 , B23K10/006 , B23K2101/18
摘要： A plasma arc welding for effectively letting gases of low boiling point substances for coating a steel sheet escape, ensuring the escape of a molten metal into gaps between the steel sheets and eventually accomplishing satisfactory plasma arc welding. A hole (31) is first bored in an upper sheet (21)(or both upper and lower sheets (21 and 22)) quickly by using a plasma arc (20) having greater power than an appropriate welding value, and a vapor of coating substances is allowed to escape through the hole (31). Subsequently, power of the plasma arc (20) is lowered to the appropriate welding value, and the upper sheet (21) and the lower sheet (22) are welded together while a filler (9) is being supplied to fill the hole (31) and the gap (23). While boring is made or immediately after boring is finished, the size of the gap (23) is measured on the basis of the plasma arc voltage, and the feed quantity of the filler (9) is controlled in accordance with the size of the gap (23).
摘要翻译： 用于有效地使用于涂覆钢板的低沸点物质的气体的等离子弧焊接逃逸，确保熔融金属逸出到钢板之间的间隙中并最终实现令人满意的等离子体电弧焊接。 首先通过使用具有比适当的焊接值更大的功率的等离子体电弧（20），在上部片材（21）（或上部和下部片材（21和22）两者中）首先钻孔（31） 允许涂层物质通过孔（31）逸出。 随后，将等离子体电弧（20）的功率降低到合适的焊接值，并且在供给填充物（9）以填充孔（31）的同时将上部片（21）和下部片（22）焊接在一起 ）和间隙（23）。 在镗孔完成之后或立即在镗孔完成之后，基于等离子体电弧电压来测量间隙（23）的尺寸，并且根据间隙的尺寸来控制填料（9）的进料量 （23）。
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公开(公告)号：US5728991A
公开(公告)日：1998-03-17
申请号：US537913
申请日：1995-10-31
CPC分类号： B23K10/02
摘要： There is provided a plasma arc welding apparatus which comprises a plasma torch and a spacing retention member which is securely fixed to the plasma torch and whose frontal end is located between a frontal end of the plasma torch and a weld workpiece and is adapted to be pressed against the workpiece while the latter is being welded. There is also provided a plasma arc welding method which makes use of a plasma arc welding apparatus that comprises a plasma torch and a spacing retention member which is securely fixed to a base of the plasma torch and whose frontal end is located between a frontal end of the plasma torch and a welding workpiece, in which method the frontal end of the spacing retention member is pressed against the workpiece while the latter is being welded.
摘要翻译： PCT No.PCT / JP94 / 00745 Sec。 371日期1995年10月31日 102（e）日期1995年10月31日PCT 1994年5月6日PCT PCT。 公开号WO94 / 26456 日期1994年11月24日提供了一种等离子弧焊接装置，其包括等离子体焰炬和间隔保持构件，该等离子体焰炬和间隔保持构件牢固地固定到等离子体焰炬上，其前端位于等离子体焰炬的前端和焊接工件之间， 适于在被焊接时被压靠在工件上。 还提供了一种使用等离子体电弧焊接装置的等离子体电弧焊接方法，该等离子体电弧焊接装置包括等离子体焰炬和间隔保持构件，其固定地固定到等离子体焰炬的基部，并且其前端位于 等离子体焰炬和焊接工件，其中间隔保持构件的前端在被焊接时被压靠在工件上。
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公开(公告)号：US5726414A
公开(公告)日：1998-03-10
申请号：US628666
申请日：1996-04-12
CPC分类号： H05H1/34 , H05H2001/3426 , H05H2001/3436 , H05H2001/3442 , H05H2001/3468 , H05H2001/3478
摘要： A plasma torch of swirling plasma gas flow type is disclosed in which there are provided an electrode body having a forward end thereof and a nozzle that is arranged to enclose said forward end portion of the electrode and that is spaced therefrom across a plasma gas flow passage, characterized in that at least a portion of the said electrode body at which a pilot arc can be ignited is composed of either of a material that is high in its melting point and a mixture of the said high melting point material with either of a substance that is low in its work function and an oxide of the said substance.
摘要翻译： PCT No.PCT / JP94 / 01854 Sec。 371日期：1996年4月12日 102（e）日期1996年4月12日PCT 1994年11月2日PCT公布。 公开号WO95 / 12965 日期1995年5月11日公开了一种旋转等离子气体流动型等离子体焰炬，其中提供了具有其前端的电极体和布置成包围电极的前端部分并且与电极主体间隔开的喷嘴 等离子体气体流动通道，其特征在于，所述电极体的至少一部分可以点燃的导电体由熔点高的材料和所述高熔点材料与 任何一种功能低的物质和所述物质的氧化物。
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