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公开(公告)号：EP0316936A2
公开(公告)日：1989-05-24
申请号：EP88119216.5
申请日：1988-11-18
发明人： Hori, Katsuyoshi Babcock-Hitachi , Butsusaki, Yasuhiro Babcock-Hitachi , Takuwa, Toshiaki Babcock-Hitachi K.K.Yokohama Kojo , Matsumura, Yoshiaki Babcock-Hitachi K.K. Kure Kojo
CPC分类号： B23K9/1093 , B23K9/091
摘要： An AC TIG welding apparatus using a hot wire is disclosed. An unconsumable electrode (5) such as of tungsten is arranged in opposedly spaced relationship with a base metal (6) to be welded. An AC arc welding power supply (2) is connected between the base metal (6) and the unconsumable electrode (5). A filler wire (9) such as of aluminum is fed toward an arc-generated part between the base metal (6) and the unconsumable electrode (5). A wire feeder (8) supplies the filler wire (9). An unconsumable-electrode welding apparatus comprising the above-mentioned devices further comprises a wire-heating power supply (3) for producing a pulsed current. The wire heating power supply (3) heats the filler wire (9) by supplying thereto a pulsed current in accordance with a synchronous signal from the AC arc welding power supply (2) or a detection signal of an arc current i A or an arc voltage of the AC arc power supply (2).The filler wire (9) is thus heated by being supplied with a heating current i W in pulse form while the unconsumable electrode (5) is kept negative by an AC arc (7) formed between the unconsumable electrode (5) and the base metal (6). During the period when the unconsumable electrode (5) is kept positive by the AC arc (7), on the other hand, the filler wire (9) is not supplied with any current or is heated by being supplied only with a sufficiently small current not to cause any substantial magnetic flow. Accordingly, even if a large current flows through the wire (9), arc interruptions can be eliminated, thereby improving the welding process of aluminum by using an AC TIG arc.
摘要翻译： 公开了一种使用热丝的AC TIG焊接设备。 诸如钨的不可消耗的电极（5）与待焊接的母材（6）以相对间隔的关系布置。 交流电弧焊电源（2）连接在贱金属（6）和不消耗电极（5）之间。 诸如铝的填充线（9）被馈送到贱金属（6）和不消耗电极（5）之间的电弧产生部分。 送丝器（8）供应填充线（9）。 包括上述装置的不可消耗电极焊接装置还包括用于产生脉冲电流的线加热电源（3）。 线加热电源（3）通过根据来自交流电弧焊接电源（2）的同步信号或电弧电流iA或电弧电压的检测信号向其提供脉冲电流来加热填充线（9） 交流电弧电源（2）的供电线（9）通过以脉冲形式供给加热电流iW而加热，而不消耗电极（5）由形成在交流电源（2）之间的交流电弧（7）保持负 不消耗电极（5）和母材（6）。 另一方面，在不可消耗电极（5）由AC电弧（7）保持为正的期间，填充线（9）不被供给任何电流，或者仅通过仅供给足够小的电流来加热 不会引起任何实质的磁流。 因此，即使大的电流流过电线（9），也可以消除电弧中断，由此通过使用AC TIG电弧来改善铝的焊接过程。
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公开(公告)号：EP0316936B1
公开(公告)日：1992-08-26
申请号：EP88119216.5
申请日：1988-11-18
发明人： Hori, Katsuyoshi Babcock-Hitachi , Butsusaki, Yasuhiro Babcock-Hitachi , Takuwa, Toshiaki Babcock-Hitachi K.K.Yokohama Kojo , Matsumura, Yoshiaki Babcock-Hitachi K.K. Kure Kojo
CPC分类号： B23K9/1093 , B23K9/091
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公开(公告)号：EP0316936A3
公开(公告)日：1989-07-05
申请号：EP88119216.5
申请日：1988-11-18
发明人： Hori, Katsuyoshi Babcock-Hitachi , Butsusaki, Yasuhiro Babcock-Hitachi , Takuwa, Toshiaki Babcock-Hitachi K.K.Yokohama Kojo , Matsumura, Yoshiaki Babcock-Hitachi K.K. Kure Kojo
CPC分类号： B23K9/1093 , B23K9/091
摘要： An AC TIG welding apparatus using a hot wire is disclosed. An unconsumable electrode (5) such as of tungsten is arranged in opposedly spaced relationship with a base metal (6) to be welded. An AC arc welding power supply (2) is connected between the base metal (6) and the unconsumable electrode (5). A filler wire (9) such as of aluminum is fed toward an arc-generated part between the base metal (6) and the unconsumable electrode (5). A wire feeder (8) supplies the filler wire (9). An unconsumable-electrode welding apparatus comprising the above-mentioned devices further comprises a wire-heating power supply (3) for producing a pulsed current. The wire heating power supply (3) heats the filler wire (9) by supplying thereto a pulsed current in accordance with a synchronous signal from the AC arc welding power supply (2) or a detection signal of an arc current i A or an arc voltage of the AC arc power supply (2).The filler wire (9) is thus heated by being supplied with a heating current i W in pulse form while the unconsumable electrode (5) is kept negative by an AC arc (7) formed between the unconsumable electrode (5) and the base metal (6). During the period when the unconsumable electrode (5) is kept positive by the AC arc (7), on the other hand, the filler wire (9) is not supplied with any current or is heated by being supplied only with a sufficiently small current not to cause any substantial magnetic flow. Accordingly, even if a large current flows through the wire (9), arc interruptions can be eliminated, thereby improving the welding process of aluminum by using an AC TIG arc.
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