JPH0254197B2 - - Google Patents
Info
- Publication number
- JPH0254197B2 JPH0254197B2 JP59008955A JP895584A JPH0254197B2 JP H0254197 B2 JPH0254197 B2 JP H0254197B2 JP 59008955 A JP59008955 A JP 59008955A JP 895584 A JP895584 A JP 895584A JP H0254197 B2 JPH0254197 B2 JP H0254197B2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- welding current
- current
- welding
- main body
- 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.)
- Expired - Lifetime
Links
- 238000003466 welding Methods 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 12
- 230000035515 penetration Effects 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Arc Welding Control (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、ワークの穴を溶極方式のアーク肉盛
溶接により埋める方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for filling holes in a workpiece by arc overlay welding using a melt electrode method.
アーク肉盛溶接方法によつてワークの穴を埋め
る方法を第１図乃至第３図に基いて説明する。先
ず、金属製ワーク１に穿設された穴２周辺のワー
ク本体３上を溶極方式の溶接トーチ４により肉盛
５する（第１図）。１２は電極ワイヤ、１３はア
ークを示す。続いて溶接トーチ４を渦巻き状に移
動させながら穴２空間上を肉盛５し（第２図）、
最終的に穴２中心まで肉盛５する（第３図）。と
ころが、従来は上記肉盛溶接をする時の溶接電流
を第４図に示した如く、一定の定常電流６で行な
つていたため、穴２周辺での溶込みを充分に確保
するよう該定常電流６の値を高目に設定すると穴
２中心付近で溶落ちが起こるという欠点があり、
逆に穴２中心付近での溶落ちが起こらないように
定常電流６の値を低目に設定すると穴２周辺での
溶込みが不充分となる欠点があつた。７はアーク
のスタートを安定化するためのブースタ電流、８
は肉盛溶接終了時のクレータ電流を示す。
A method of filling holes in a workpiece by arc overlay welding will be explained with reference to FIGS. 1 to 3. First, welding 5 is applied to the workpiece body 3 around the hole 2 drilled in the metal workpiece 1 using a welding torch 4 using a melt electrode (FIG. 1). 12 is an electrode wire, and 13 is an arc. Next, while moving the welding torch 4 in a spiral pattern, weld overlay 5 on the hole 2 space (Fig. 2),
Finally, overlay 5 to the center of hole 2 (Figure 3). However, in the past, the welding current for overlay welding was a constant steady current 6 as shown in Figure 4, so the steady current was changed to ensure sufficient penetration around the hole 2. If the value of 6 is set too high, there is a drawback that burn-through will occur near the center of hole 2.
On the other hand, if the value of the steady current 6 is set low to prevent burn-through near the center of the hole 2, there is a drawback that penetration around the hole 2 becomes insufficient. 7 is a booster current to stabilize the start of the arc, 8
indicates the crater current at the end of overlay welding.
上記欠点を解消する方法として、溶接トーチ４
の移動速度を速くする方法が考えられるが、この
方法は溶融池が長くなつて不安定となる欠点があ
る。また、アーク電圧を上げてアークの長さを大
きくし、これにより溶融池に加わるアーク圧力を
小さくして溶落ちを防止する方法も考えられる
が、この方法はアーク圧力が減少しても溶融池面
積が大きくなるため、大きくなつた溶融池自体の
自重により溶落ちるおそれがある。逆にアーク電
圧を下げる方法は、溶融池面積は小さくなるがア
ークの長さが短くなるため、該溶融池にアーク圧
力が強く作用し、同じく溶落ちるおそれがある。 As a method to eliminate the above drawbacks, welding torch 4
A possible method is to increase the moving speed of the molten metal, but this method has the disadvantage that the molten pool becomes longer and becomes unstable. Another possibility is to increase the arc voltage to increase the length of the arc, thereby reducing the arc pressure applied to the molten pool and preventing burn-through. Since the area becomes larger, there is a risk that the larger molten pool will burn down due to its own weight. On the other hand, in the method of lowering the arc voltage, the area of the molten pool becomes smaller, but the length of the arc becomes shorter, so the arc pressure acts strongly on the molten pool, and there is also a risk that it will burn through.
本発明は上記事情に鑑みなされたもので、穴周
辺では溶込みを充分に確保でき、穴中心付近では
溶落ちを防止することのできるアーク肉盛溶接方
法を提供するのが目的である。
The present invention was made in view of the above circumstances, and it is an object of the present invention to provide an arc build-up welding method that can ensure sufficient penetration around the hole and prevent burn-through around the center of the hole.
本発明の特徴とするところは、穴空間上を肉盛
する時の穴溶接電流を該穴周辺のワーク本体上を
肉盛する時の本体溶接電流より低く設定すると共
に、前記本体溶接電流から前記穴溶接電流に切り
換わる直前に本体溶接電流より高目の電流を流す
ことにより、穴周辺では溶込みを充分に確保でき
る溶接電流を流し、穴中心付辺では溶落ちが起こ
らない溶接電流を流すようにしたところにある。
The present invention is characterized in that the hole welding current when overlaying on the hole space is set lower than the main body welding current when overlaying on the work body around the hole, and the main body welding current is changed from the main body welding current to the By applying a higher current than the main body welding current just before switching to the hole welding current, a welding current that can ensure sufficient penetration is applied around the hole, and a welding current that does not cause burn-through is applied around the center of the hole. That's where I did it.
以下、本発明を第５図に示した溶接電流のグラ
フにより説明する。本発明ではブースタ電流７の
直後の本体溶接電流９を穴２周辺の溶込みを充分
に確保できるように高目に設定する。そして、穴
２周辺の肉盛が終つて穴２空間上から穴２中心に
向つての肉盛溶接の時は、前記溶接電流９よりも
低い穴溶接電流１０に設定する。本体溶接電流９
から穴溶接電流１０への切り換えは、溶接トーチ
４の操作部に設けた切換スイツチ（図示せず）に
より端子電圧を下げて行なう。ここで、本体溶接
電流９から穴溶接電流１０に切り換わる直前に高
目の電流１１（同図の破線部分）にすると、既に
固化した始点位置１２（第６図）の肉盛部を容易
に再溶融できるため、始点において発生しやすい
溶込み不足を防止し易くなる。
The present invention will be explained below with reference to the welding current graph shown in FIG. In the present invention, the main body welding current 9 immediately after the booster current 7 is set to be high enough to ensure sufficient penetration around the hole 2. When overlaying around the hole 2 is completed and overlay welding is performed from above the hole 2 space toward the center of the hole 2, the hole welding current 10 is set lower than the welding current 9. Main body welding current 9
Switching from the welding current to the hole welding current 10 is performed by lowering the terminal voltage using a changeover switch (not shown) provided in the operating section of the welding torch 4. Here, if the current is set to a higher current 11 (dotted line in the figure) just before switching from the main body welding current 9 to the hole welding current 10, the overlay part at the starting point position 12 (Figure 6) that has already solidified can be easily removed. Since it can be remelted, insufficient penetration, which tends to occur at the starting point, can be easily prevented.
実施例 １
板厚10mm、穴の径10mmのアルミニウム製のワー
クにアルミニウム製の電極ワイヤを装着した溶接
トーチにより肉盛溶接をする場合、ブースタワー
クを350アンペアで１秒以内、続く高目の本体溶
接電流を180アンペアで約４秒、続く高目の溶接
電流を200Aで約２秒、続く低目の穴溶接電流を
120アンペアで約５秒、最後のクレータ電流を100
アンペアで２秒に設定することにより穴周辺では
充分に溶込みを確保でき、穴空間上では溶落ちを
防止することができた。Example 1 When overlaying an aluminum workpiece with a plate thickness of 10mm and a hole diameter of 10mm using a welding torch equipped with an aluminum electrode wire, the booster work is applied at 350 amperes for less than 1 second, followed by a high body. Weld the welding current at 180 amperes for about 4 seconds, then apply a higher welding current to 200A for about 2 seconds, then lower the welding current to the hole.
120 amps for about 5 seconds, final crater current 100
By setting the ampere to 2 seconds, it was possible to ensure sufficient penetration around the hole and prevent burn-through in the hole space.
尚、上記実施例ではブースタ電流７とクレータ
電流８の間の溶接電流を２段階に分割した場合を
示したが、３段階以上であつてもよいこと勿論で
ある。また、ワークの素材や穴の大きさ等により
各電流値及び通電時間が変わることも勿論であ
る。 In the above embodiment, the welding current between the booster current 7 and the crater current 8 is divided into two stages, but it goes without saying that the welding current may be divided into three or more stages. Furthermore, it goes without saying that each current value and energization time vary depending on the material of the workpiece, the size of the hole, etc.
本発明によれば、ワークの穴空間上を肉盛する
時の穴溶接電流を該穴周辺のワーク本体上に肉盛
する時の本体溶接電流より低く設定すると共に、
前記本体溶接電流から前記穴溶接電流に切り換わ
る直前に本体溶接電流より高目の電流を流すよう
にしたので、穴周辺を肉盛する時は本体溶接電流
を高目に設定して溶込みを充分に確保することが
でき、穴中心付近に向つて肉盛する時は穴溶接電
流を低目に設定して溶落ちを防止することができ
る。また、本体溶接電流から穴溶接電流に切り換
わる直前に一旦、高目の電流を流すため、既に固
化した始点位置の肉盛部を確実に再溶融すること
ができ、隣接するビード同士の融合不良を防止で
きる。これによりワークの穴を完全にシールして
埋めることができる。
According to the present invention, the hole welding current when overlaying on the hole space of the workpiece is set lower than the main body welding current when overlaying on the workpiece body around the hole, and
Immediately before switching from the main body welding current to the hole welding current, a higher current than the main body welding current is applied, so when overlaying around the hole, the main body welding current is set higher to increase penetration. This can be ensured sufficiently, and when overlaying toward the center of the hole, the hole welding current can be set low to prevent burn-through. In addition, since a higher current is applied immediately before switching from the main body welding current to the hole welding current, the already solidified build-up at the starting point can be remelted reliably, resulting in poor fusion between adjacent beads. can be prevented. This allows the hole in the workpiece to be completely sealed and filled.
第１図乃至第３図はアーク肉盛溶接方法の各工
程を示す断面図、第４図は従来の溶接電流と時間
との関係を示す図、第５図は本発明に係る溶接電
流と時間との関係を示す図、第６図は肉盛溶接途
中ワークの平面図である。
１……ワーク、２……穴、３……ワーク本体、
５……肉盛、７……ブースタ電流、８……クレー
タ電流、９……高目の本体溶接電流、１０……低
目の穴溶接電流。
Figures 1 to 3 are cross-sectional views showing each process of the arc overlay welding method, Figure 4 is a diagram showing the relationship between conventional welding current and time, and Figure 5 is a diagram showing the relationship between welding current and time according to the present invention. FIG. 6 is a plan view of a workpiece during overlay welding. 1... Work, 2... Hole, 3... Work body,
5... Overlay, 7... Booster current, 8... Crater current, 9... High main body welding current, 10... Low hole welding current.
Claims (1)
方法において、前記穴空間上を肉盛する時の穴溶
接電流を該穴周辺のワーク本体上を肉盛する時の
本体溶接電流より低く設定すると共に、前記本体
溶接電流から前記穴溶接電流に切り換わる直前に
本体溶接電流より高目の電流を流すことを特徴と
するアーク肉盛溶接方法。1. In a method of filling a hole in a workpiece by arc overlay welding, the hole welding current when overlaying on the hole space is set lower than the main body welding current when overlaying on the workpiece body around the hole. Further, an arc build-up welding method characterized in that a current higher than the main body welding current is passed immediately before switching from the main body welding current to the hole welding current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP895584A JPS60152371A (en) | 1984-01-20 | 1984-01-20 | Arc build-up welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP895584A JPS60152371A (en) | 1984-01-20 | 1984-01-20 | Arc build-up welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60152371A JPS60152371A (en) | 1985-08-10 |
| JPH0254197B2 true JPH0254197B2 (en) | 1990-11-20 |
Family
ID=11707090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP895584A Granted JPS60152371A (en) | 1984-01-20 | 1984-01-20 | Arc build-up welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60152371A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08269907A (en) * | 1995-03-31 | 1996-10-15 | Toyo Foods Syst Kk | Melting of snow on surface of land and freezing preventing structure |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5233149A (en) * | 1991-08-02 | 1993-08-03 | Eaton Corporation | Reprocessing weld and method |
| US8517248B2 (en) * | 2009-10-14 | 2013-08-27 | Ariel Andre Waitzman | Mould with conformal cooling |
| US20110256257A1 (en) * | 2010-04-20 | 2011-10-20 | Honda Motor Co., Ltd. | Method of manufacturing a mold with conformal cooling passages |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60118388A (en) * | 1983-12-01 | 1985-06-25 | Toyota Motor Corp | Method for filling hole of metallic body |
-
1984
- 1984-01-20 JP JP895584A patent/JPS60152371A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60118388A (en) * | 1983-12-01 | 1985-06-25 | Toyota Motor Corp | Method for filling hole of metallic body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08269907A (en) * | 1995-03-31 | 1996-10-15 | Toyo Foods Syst Kk | Melting of snow on surface of land and freezing preventing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60152371A (en) | 1985-08-10 |
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