JPH0361557B2 - - Google Patents
Info
- Publication number
- JPH0361557B2 JPH0361557B2 JP5218584A JP5218584A JPH0361557B2 JP H0361557 B2 JPH0361557 B2 JP H0361557B2 JP 5218584 A JP5218584 A JP 5218584A JP 5218584 A JP5218584 A JP 5218584A JP H0361557 B2 JPH0361557 B2 JP H0361557B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- diameter
- hole
- nozzle
- tip
- 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
Links
- 238000003466 welding Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 6
- 230000002950 deficient Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000149 penetrating effect Effects 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
【発明の詳細な説明】 本発明は、栓溶接方法の改良に関する。[Detailed description of the invention] The present invention relates to improvements in plug welding methods.
厚板溶接部等に欠陥が生じた場合、欠陥部のみ
をドリル等で除去し、その穴を栓溶接により補修
することが行なわれている。 When a defect occurs in a welded portion of a thick plate, only the defective portion is removed using a drill or the like, and the hole is repaired by plug welding.
第１図に示すように、MIG溶接で厚板等の栓
溶接を行なう場合、母材１と同じ穴径のスタート
ピース５で溶接を行なう時、スタート直後は入熱
不足である為に、穴径に対して完全溶け込みを得
るには、スタートピース５を用いて母材に予熱を
与える必要がある。 As shown in Figure 1, when performing plug welding on thick plates etc. using MIG welding, when welding is performed using a starting piece 5 with the same hole diameter as the base metal 1, the hole becomes weak due to insufficient heat input immediately after the start. In order to obtain complete penetration for the diameter, it is necessary to preheat the base material using the starting piece 5.
一方、第２図に示すように途中でアークが切れ
再スタートを行なう場合は、前のビード７の表面
に酸化スケール等の影響でアーク発生が困難な時
も有り、又、アーク発生後もスタート部と同じよ
うにスタート直後はどうしても入熱不足となり溶
融不良等の溶接欠陥が生ずる可能性が多い。 On the other hand, as shown in Figure 2, if the arc breaks midway and restarts, it may be difficult to generate an arc due to the influence of oxide scale on the surface of the previous bead 7, or it may be difficult to start the arc even after the arc has occurred. As in the section above, there is a high possibility that heat input will be insufficient immediately after starting, resulting in welding defects such as poor melting.
なお、第１図及び第２図において、２はノズル
本体、３は溶接チツプ、４は溶接ワイヤ、６は上
下スライドを示す。 In FIGS. 1 and 2, 2 indicates a nozzle body, 3 a welding tip, 4 a welding wire, and 6 a vertical slide.
本発明は、栓溶接の再スタート時から溶接金属
の完全溶け込みを行ない、溶接部の品質向上を計
るものである。 The present invention aims to improve the quality of the weld by completely penetrating the weld metal from the time plug welding is restarted.
すなわち、本発明は、厚板溶接部等の欠陥部を
ドリル等で除去し、その穴を栓溶接により補修す
るにあたり、一時的に溶接を中断し、続いて再び
溶接を行なうに際し、前記溶接工程の接着金属
に、上部の径が下部の径より大であるが、上部の
径は補修穴径より小さいテーパのついた穴をあ
け、溶接ノズル先端のチツプに垂直面に対して若
干の角度を持たせたノズルを前記穴の中心に向つ
て位置させ、該ノズルを回転させながら栓溶接を
することを特徴とする栓溶接方法に関する。 That is, in the present invention, when a defective part such as a thick plate weld is removed with a drill or the like and the hole is repaired by plug welding, welding is temporarily interrupted and then welding is performed again. A tapered hole is drilled in the adhesive metal, the diameter of the upper part is larger than the diameter of the lower part, but the diameter of the upper part is smaller than the diameter of the repair hole, and the tip at the tip of the welding nozzle is made at a slight angle with respect to the vertical plane. The present invention relates to a plug welding method characterized in that the nozzle is positioned toward the center of the hole, and plug welding is performed while rotating the nozzle.
以下に、本発明方法を、図面に基づき説明す
る。 The method of the present invention will be explained below based on the drawings.
第３図は、本発明方法の説明図である。図中の
１乃至６は、第１図及び第２図のものと共通であ
る。また、８は回転ギヤー、９は回転モーター、
１０は溶着金属、１１は再スタート部の形状を示
す。 FIG. 3 is an explanatory diagram of the method of the present invention. 1 to 6 in the figure are the same as those in FIGS. 1 and 2. Also, 8 is a rotating gear, 9 is a rotating motor,
Reference numeral 10 indicates the weld metal, and reference numeral 11 indicates the shape of the restart portion.
本発明に於て、１１の再スタート部の形状は、
その上部の径d1が補修穴孔Ｄより約２〜３mm小径
とし、その下部の径d2はd1よりさらに小径となる
テーパ状とする。なお、補修穴孔Ｄは、通常最低
でも12〜13mmである。このように、再スタート部
の形状をテーパ状にすることにより、溶接の再ス
タート直径からの溶接熱のまわりが早く、又、溶
接チツプに角度をつけ回転機構でノズルを回転さ
せることにより溶融プールが均一化され安定した
溶け込みが得られる。ここで、溶接チツプにつけ
る角度は、垂直面に対して10乃至20゜程度である。 In the present invention, the shape of the restart part 11 is as follows:
The diameter d 1 of the upper part is about 2 to 3 mm smaller than the repair hole D, and the diameter d 2 of the lower part is tapered to be even smaller than d 1 . Note that the repair hole D is usually at least 12 to 13 mm. In this way, by making the shape of the restart part tapered, the welding heat from the restart diameter of welding can be dissipated quickly, and by setting the welding tip at an angle and rotating the nozzle with the rotation mechanism, the molten pool can be reduced. is made uniform and stable penetration is obtained. Here, the angle attached to the welding tip is about 10 to 20 degrees with respect to the vertical plane.
溶接再スタート部の径を補修穴径より小さくす
ることにより、再スタート部の壁が溶融し易すい
溶着金属部で形成することになり、再スタートの
融合不良を防止することができる。 By making the diameter of the welding restart part smaller than the diameter of the repair hole, the wall of the restarting part is formed of a welded metal part that is easy to melt, and it is possible to prevent fusion failure during restarting.
なお、第３図において、スタートピース５の形
状がテーパ状に示されているが、テーパ状に限定
されるものではない。 In addition, although the shape of the start piece 5 is shown as tapered in FIG. 3, it is not limited to the tapered shape.
第１図及び第２図は、従来のMIG溶接による
厚板の栓溶接の説明図である。第３図は、本発明
の栓溶接方法の説明図である。
FIGS. 1 and 2 are explanatory diagrams of plug welding of thick plates by conventional MIG welding. FIG. 3 is an explanatory diagram of the plug welding method of the present invention.
Claims (1)
その穴を栓溶接により補修するにあたり、一時的
に溶接を中断し、続いて再び溶接を行なうに際
し、前記溶接工程の溶着金属に、上部の径が下部
の径より大であるが、上部の径は補修穴径より小
さいテーパのついた穴をあけ、溶接ノズル先端の
チツプに垂直面に対して若干の角度を持たせたノ
ズルを前記穴の中心に向つて位置させ、該ノズル
を回転させながら栓溶接をすることを特徴とする
栓溶接方法。1 Remove defective parts such as thick plate welds with a drill etc.
When repairing the hole by plug welding, welding is temporarily interrupted, and when welding is performed again, the upper diameter is larger than the lower diameter, but the upper diameter is larger than the lower diameter. Drill a tapered hole smaller than the repair hole diameter, position the nozzle with the tip at the tip of the welding nozzle at a slight angle to the vertical plane toward the center of the hole, and while rotating the nozzle, A plug welding method characterized by plug welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5218584A JPS60196284A (en) | 1984-03-21 | 1984-03-21 | Plug welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5218584A JPS60196284A (en) | 1984-03-21 | 1984-03-21 | Plug welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60196284A JPS60196284A (en) | 1985-10-04 |
| JPH0361557B2 true JPH0361557B2 (en) | 1991-09-20 |
Family
ID=12907740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5218584A Granted JPS60196284A (en) | 1984-03-21 | 1984-03-21 | Plug welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60196284A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253206B (en) * | 2019-06-14 | 2022-03-15 | 中广核工程有限公司 | Main screw hole damage repairing method for nuclear power plant reactor pressure vessel |
-
1984
- 1984-03-21 JP JP5218584A patent/JPS60196284A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60196284A (en) | 1985-10-04 |
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