JPS59150673A - Pulse welding method - Google Patents
Pulse welding methodInfo
- Publication number
- JPS59150673A JPS59150673A JP2347583A JP2347583A JPS59150673A JP S59150673 A JPS59150673 A JP S59150673A JP 2347583 A JP2347583 A JP 2347583A JP 2347583 A JP2347583 A JP 2347583A JP S59150673 A JPS59150673 A JP S59150673A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- frequency
- welding
- current
- period
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
- B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
- B23K9/093—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits the frequency of the pulses produced being modulatable
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
に関し,パルス電流の周波数の選定の方法の改良である
。[Detailed Description of the Invention] This is an improvement in the method of selecting the frequency of pulsed current.
パルス電流を重畳させた溶接法は溶接条件の安定.溶接
部の品質向−Lなどの目的のため近年多く用いられてい
る。しかしながらi<ルス電流を重畳した溶接(以下パ
ルス溶接)では、ノテルス電流のピーク値,パルス中と
ともにパルス周波数の選定が溶接アークの安定性,さら
に溶接部の品質に犬き4影響を与える。The welding method that uses superimposed pulsed current provides stable welding conditions. It has been widely used in recent years for purposes such as improving the quality of welded parts. However, in welding with a superimposed i < Lus current (hereinafter referred to as pulse welding), the peak value of the Notels current, the pulse duration, and the selection of the pulse frequency have a significant influence on the stability of the welding arc and the quality of the weld.
(1)
第1図は従来性なわれているパルス溶接電流の波形で縦
軸に溶接電流I,横軸に時間なTとして示したものであ
り,溶接アークにはあらかじめ設定されたベース電流I
Bに重畳して,パルス電流IPの1]1,を待ったピー
ク電流■が流れる。(1) Figure 1 shows the waveform of a conventional pulsed welding current, with the welding current I on the vertical axis and time T on the horizontal axis.The welding arc has a preset base current I.
Superimposed on B, a peak current ■ waits for 1]1 of the pulse current IP to flow.
二の時のパルス周波数はあらかじめ設定した一定の周波
数である。The pulse frequency in the second case is a preset constant frequency.
パルス溶接においては,溶接ワイヤの先端から溶滴が旬
月に移行する場合,溶接電流,パルス電流の巾,パルス
電流値,パルス周波数,溶接ワイヤの線径などの組合せ
によって規則正しく溶滴が移行すると良好な溶接が行わ
れる。しかしながら実際の溶接ではこれらの溶接条件は
常に変動しており,パルス周波数が一定であるためしば
しば最適条件から外れる。その結果アーク状態が不安定
になり,溶接欠陥が生じる。In pulse welding, when droplets migrate from the tip of the welding wire, the droplets migrate in an orderly manner depending on the combination of welding current, width of the pulse current, pulse current value, pulse frequency, wire diameter of the welding wire, etc. A good weld is made. However, in actual welding, these welding conditions are constantly changing, and because the pulse frequency is constant, they often deviate from the optimal conditions. As a result, the arc condition becomes unstable and welding defects occur.
本発明は以上の点にかんがみなされたもので。The present invention was conceived in view of the above points.
パルス溶接のパルス周波数を周期的に変化させるのみで
複雑なパルス条件設定や,溶接条件制(2)
御装置を不要とし安定なパルス溶接法を提供するもので
ある。This method provides a stable pulse welding method by simply changing the pulse frequency of pulse welding periodically, eliminating the need for complex pulse condition settings or welding condition control devices.
以下本実施例を第2図乃至第4図において説明する。第
2図は本発明の溶接電流の波形を示したもので、縦軸に
溶接電流■、横軸に時間Tをとったものである。ベース
電流IBにパルスピーク電流IPを重畳した場合、パル
ス周波数は高い方から低い方へ変化し周期Tで繰返す。This embodiment will be explained below with reference to FIGS. 2 to 4. FIG. 2 shows the waveform of the welding current according to the present invention, with the welding current {circle around (2)} plotted on the vertical axis and time T plotted on the horizontal axis. When the pulse peak current IP is superimposed on the base current IB, the pulse frequency changes from high to low and is repeated at a period T.
この時パルス周波数は低い方から高い方へ変化しても良
い。At this time, the pulse frequency may change from low to high.
第8図は縦軸に周波数f、横軸に時間Tをとったもので
ここに示したものは周波数fの変化は直線的であるが、
第4図に示すように曲線的に変化させても艮い。このよ
うにパルス周波数を周期ごとに繰返し変化させて溶接す
ることにより、溶接ワイヤ先端の溶融した金属の安定な
移行に必要なパルス条件が必らず存在し溶滴移行は周期
Tごとに一回生じる。Figure 8 shows frequency f on the vertical axis and time T on the horizontal axis. In the case shown here, the change in frequency f is linear, but
It is also possible to change it in a curved manner as shown in FIG. By welding by repeatedly changing the pulse frequency every cycle, the pulse conditions necessary for stable transfer of the molten metal at the tip of the welding wire are always present, and droplet transfer occurs once every cycle T. arise.
したがって本発明のパルス溶接法によれば。Therefore, according to the pulse welding method of the present invention.
(3) パルス条件の周波数は調整する必要は無くなり。(3) There is no need to adjust the frequency of the pulse condition.
常に安定したアーク状態が得られ、良好な溶接部が得ら
れる。A stable arc condition is always obtained, and good welds can be obtained.
例えば、パルス周波数f = 15〜100001(z
、周期TI=0.01〜1 secとし、繰返し周波
数としては100〜’/2(Hz)をとり、パルス周波
数fを高い範囲に選んだ場合繰返し周期は短(2周波数
計を低い範囲に選んだ場合は繰返し周期は長(とる。こ
れらは溶接条件、溶接ワイヤ線径、溶接N i! 、パ
ルス巾、パルスピーク電流、ベース電流、シールドガス
などによりあらかじめ選定しておく。For example, pulse frequency f = 15-100001 (z
, the period TI = 0.01 to 1 sec, the repetition frequency is 100 to '/2 (Hz), and if the pulse frequency f is selected in the high range, the repetition period is short (if the pulse frequency f is selected in the low range) If so, the repetition period should be long. These should be selected in advance based on welding conditions, welding wire diameter, welding Ni!, pulse width, pulse peak current, base current, shielding gas, etc.
第1図は従来技術のパルス波形の説明図、第2図は本発
明方法のパルス波形の説明図、第3図、第4図は本発明
方法のパルス周波数と時間の関係を示す図表である。
■・・・溶接電流、T・・・時ftJ]、T+・・・パ
ルス繰返しJ?1lXIJ、 f・・・パルス周波数
、w・・・パルス中目 図
−〇(
竪 輝
い 持続
蜆FIG. 1 is an explanatory diagram of the pulse waveform of the prior art, FIG. 2 is an explanatory diagram of the pulse waveform of the method of the present invention, and FIGS. 3 and 4 are charts showing the relationship between pulse frequency and time of the method of the present invention. . ■...Welding current, T...hours ftJ], T+...pulse repetition J? 1lXIJ, f...Pulse frequency, w...Pulse middle Fig.
lizard
Claims (1)
て+−,1:配パルス電流の周波数を一定周期ごとに変
化させたパルス電流を重畳させて行うことを特徴とする
パルス溶接法。In the arc welding method in which welding is performed by superimposing pulsed currents, +-, 1: A pulsed welding method characterized by superimposing pulsed currents in which the frequency of the distributed pulsed current is changed at regular intervals.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2347583A JPS59150673A (en) | 1983-02-15 | 1983-02-15 | Pulse welding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2347583A JPS59150673A (en) | 1983-02-15 | 1983-02-15 | Pulse welding method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59150673A true JPS59150673A (en) | 1984-08-28 |
Family
ID=12111551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2347583A Pending JPS59150673A (en) | 1983-02-15 | 1983-02-15 | Pulse welding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59150673A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5495091A (en) * | 1989-02-27 | 1996-02-27 | Mitsubishi Denki Kabushiki Kaisha | Pulse welding apparatus |
CN113333914A (en) * | 2021-05-28 | 2021-09-03 | 天津中车唐车轨道车辆有限公司 | Double-pulse MAG welding stainless steel vertical upward fillet weld welding process |
-
1983
- 1983-02-15 JP JP2347583A patent/JPS59150673A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5495091A (en) * | 1989-02-27 | 1996-02-27 | Mitsubishi Denki Kabushiki Kaisha | Pulse welding apparatus |
US5726419A (en) * | 1989-02-27 | 1998-03-10 | Mitsubishi Denki Kabushiki Kaisha | Pulse welding apparatus |
CN113333914A (en) * | 2021-05-28 | 2021-09-03 | 天津中车唐车轨道车辆有限公司 | Double-pulse MAG welding stainless steel vertical upward fillet weld welding process |
CN113333914B (en) * | 2021-05-28 | 2023-02-17 | 天津中车唐车轨道车辆有限公司 | Double-pulse MAG welding stainless steel vertical upward fillet weld welding process |
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