JPS63242488A - Gas shielded arc welding wire - Google Patents
Gas shielded arc welding wireInfo
- Publication number
- JPS63242488A JPS63242488A JP7689587A JP7689587A JPS63242488A JP S63242488 A JPS63242488 A JP S63242488A JP 7689587 A JP7689587 A JP 7689587A JP 7689587 A JP7689587 A JP 7689587A JP S63242488 A JPS63242488 A JP S63242488A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- welding wire
- gas
- gas shielded
- arc welding
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 50
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 238000010586 diagram Methods 0.000 claims abstract description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 16
- 229910052725 zinc Inorganic materials 0.000 claims description 16
- 239000011701 zinc Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 abstract 2
- 239000008397 galvanized steel Substances 0.000 abstract 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 239000001569 carbon dioxide Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、表面に亜鉛メッキ、亜鉛系塗装等が施され
た亜鉛被覆鋼板のガスシールドアーク溶接用ワイヤに関
する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a wire for gas-shielded arc welding of a zinc-coated steel sheet whose surface has been subjected to galvanization, zinc-based coating, or the like.
（従来技術及び発明か解決しようとする問題点）この種
亜鉛被覆鋼板をガスシールドアーク溶接する場合、亜鉛
の沸点か溶接雰囲気の温度よりも低いことから、溶接中
に亜鉛か蒸気化して溶接部に気泡となって残り、多数の
ブローホール、ピット等溶接欠陥の原因となっていた。(Prior art and problem to be solved by the invention) When gas-shielded arc welding is performed on this type of zinc-coated steel sheet, since the boiling point of zinc is lower than the temperature of the welding atmosphere, the zinc vaporizes during welding and the welded area Air bubbles remained in the welding process, causing numerous blowholes, pits, and other welding defects.
これを防止するため、かかる亜鉛被覆鋼板をアーク溶接
するに先立って、鋼板表面の亜鉛被覆層を機械的に削っ
て除去したり、或いはガス炎等て燃焼させて除去する等
の前処理を施すことか行われているか、溶接に先立って
このような前処理を施すことは面倒であり、生産能率を
低下させる原因ともなる。In order to prevent this, prior to arc welding such a zinc-coated steel sheet, pretreatment is performed such as mechanically scraping and removing the zinc coating layer on the surface of the steel sheet, or removing it by burning it with a gas flame, etc. However, performing such pretreatment prior to welding is troublesome and may cause a reduction in production efficiency.
（問題点を解決するための手段）
本発明者はこのような前処理を施すことなく上記ブロー
ホール、ビット等溶接欠陥の発生を防＋ｈする手段につ
いて種々研究・実験を繰り返した結果、従来の溶接用ワ
イヤにおいて含まれる特定成分を一定以下且つ所定範囲
内に抑えることによって、かかる問題を解決し得ること
を見出し、本発明を完成した。而してその要旨とすると
ころは、ワイヤ中の成分Ｃ、Ｐ、Ｓを重量百分率でＣ：
０．１５％以下、 Ｐ ： ０．０３０％以下、 Ｓ
： ０．０３０％以下の各範囲に抑え、且つＳｉ、 Ｍ
ｎを添付図第１図のＡ、Ｂ、Ｃ，Ｄ、Ｅて囲まれた範囲
内に抑えて亜鉛被覆鋼板のガスシールドアーク溶接用ワ
イヤとなしたことにある。(Means for solving the problem) As a result of repeated research and experiments on means for preventing the occurrence of welding defects such as blowholes and bits without performing such pretreatment, the present inventor found that the conventional The inventors have discovered that such problems can be solved by suppressing the specific components contained in welding wires below a certain level and within a predetermined range, and have completed the present invention. The gist of this is that the components C, P, and S in the wire are expressed as weight percentages:
0.15% or less, P: 0.030% or less, S
: suppressed to each range of 0.030% or less, and Si, M
The wire for gas-shielded arc welding of zinc-coated steel sheets is obtained by suppressing n within the ranges A, B, C, D, and E in the attached drawing.
このように、本発明はワイヤ中のＳｉ、 Ｍｎの量を通
常のレベルより低く抑えたものである。これによってブ
ローホール、ビット更にはつオームホール（芋虫状の穴
）の発生か抑制されることが確認された。その具体的な
理由については定かでないか一応次のような理由による
ものと推察される。In this way, the present invention suppresses the amounts of Si and Mn in the wire below normal levels. It was confirmed that this suppressed the occurrence of blowholes, bits, and even ohmholes (worm-shaped holes). The specific reason for this is not certain, but it is assumed that it is due to the following reasons.
即ちＳｉ、 Ｍｎが減少すると溶融池の粘性か低下し、
そして溶融池の粘性か低下すると溶接部て発生した亜鉛
蒸気か溶融池か固まる以前に溶融池を突き抜けて逃げ易
くなり、以て溶融池の凝固時にその内部に捕捉されて気
泡となって残る量か少なくなるからてはないかと解され
る。That is, as Si and Mn decrease, the viscosity of the molten pool decreases,
When the viscosity of the molten pool decreases, the zinc vapor generated at the weld zone will easily penetrate the molten pool and escape before it solidifies, and when the molten pool solidifies, it will be trapped inside and remain as bubbles. It is understood that this is because the amount decreases.
ところてガスシールドアーク溶接には、シールドガスと
して炭酸ガスを用いる炭酸ガスアーク溶接と、炭酸ガス
とアルゴンガスとの混合ガスを用いるマク溶接その他か
あるか、この内電流をパルス状に発生するパルスマグ溶
接においては溶融池の粘性はもともと低く、従ってＳｉ
、 Ｍｎの添加量を減少するとその粘性は一段と低くな
って発生した亜鉛蒸気は溶融池を速やかに通り抜けられ
るようになる。しかもパルスマグ溶接においては、分解
して気泡の原因となる酸素を発生する炭酪ガスの量か少
ないために、脱酸剤としてのＳｉ、 Ｍｎを減らしても
特に支障を生じない。即ち本発明はこのようなパルスマ
ク溶接に適用した場合に特にその効果か大きい。尤もそ
の添加量か第１図に図示した範囲を超えて低くなると、
脱酸不足に基づくブローホール等が発生するようになる
。かかるパルスマク溶接においてＳｉ、 Ｍｎの好適な
添加量は同図中Ｅ、Ｆ、Ｇ、Ｈて囲まれた範囲である。By the way, there are two types of gas shielded arc welding: carbon dioxide gas arc welding, which uses carbon dioxide as a shielding gas, and MAG welding, which uses a mixed gas of carbon dioxide and argon gas. Among these, there is pulsed MAG welding, which generates a pulsed current. The viscosity of the molten pool is originally low in Si
, When the amount of Mn added is reduced, its viscosity becomes lower and the generated zinc vapor can quickly pass through the molten pool. Moreover, in pulsed MAG welding, the amount of charcoal gas that decomposes and generates oxygen that causes bubbles is small, so reducing the amount of Si and Mn as deoxidizers does not cause any problems. That is, the present invention is particularly effective when applied to such pulsed welding. However, if the amount added exceeds the range shown in Figure 1,
Blowholes and the like begin to occur due to insufficient deoxidation. In such pulsed welding, the preferred amounts of Si and Mn to be added are within the ranges E, F, G, and H in the figure.
一方炭酸ガスアーク溶接においては、炭酸ガスの分解に
よって酸素を出し易いことからＳｉ、 Ｍｎの好適な量
範囲は第１図のＡ、Ｂ、Ｆて囲まれた範囲となる。On the other hand, in carbon dioxide gas arc welding, since oxygen is easily released by decomposition of carbon dioxide gas, the preferred amount range of Si and Mn is the range surrounded by A, B, and F in FIG.
本発明においては、その他の成分であるＣ９ｐ、ｓかそ
れぞれＣ： ０．１５％以下、 Ｐ ： ０．０３０％
以下、Ｓ・０．０３０％以下に抑えられる必要かある。In the present invention, other components C9p and s each have C: 0.15% or less, P: 0.030%
Below, it is necessary to suppress S to 0.030% or less.
Ｃの量かこれより多くなると溶接金属の靭性が低下して
割れを発生し易くなり、また不純物としてワイヤ中に含
まれるＰ、Ｓの量が上記の値を超えると、溶接金属の靭
性低下及びこれら成分の偏析に基づく割れを発生し易く
なる。If the amount of C exceeds this value, the toughness of the weld metal will decrease and cracks will easily occur, and if the amount of P and S contained in the wire as impurities exceeds the above value, the toughness of the weld metal will decrease and Cracks are likely to occur due to the segregation of these components.
（実施例〉 次に本発明の実施例を詳しく説明する。(Example> Next, embodiments of the present invention will be described in detail.
第１表（第６頁）に示す組成の溶接用ワイヤを用いて亜
鉛被覆鋼板の重ねすみ肉溶接を（水平溶接及び下進溶接
）第２表（第７頁）の条件の下にパルスマク溶接と炭酸
ガス（アーク）溶接とて行い、溶接部に生したピット、
ブローホール。Pulse fillet welding of zinc-coated steel sheets (horizontal welding and downward welding) using welding wire with the composition shown in Table 1 (Page 6) under the conditions shown in Table 2 (Page 7) and carbon dioxide gas (arc) welding, and pits formed in the welded area,
blow hole.
つオームホールを調査した。尚、比較のために従来組成
の溶接用ワイヤを用いて（記号のＥ）同様の試験を行っ
た。結果を第３表（第８頁）に示す。We investigated two ohm holes. For comparison, a similar test was conducted using a welding wire of a conventional composition (symbol E). The results are shown in Table 3 (page 8).
第３表の結果から解るように、低Ｓｉ 、 Ｍｎの本発
明例の溶接用ワイヤ（Ａ−Ｄ）を用いることにより１パ
ルスマグ溶接、炭酸ガス溶接の何れにおいてもビット、
ブローナール、つす−ムホールともに著しぐ改作される
ことが認められた。また比較例の溶接用ワイヤにおいて
は、パルスマグ溶接にて下進（下り坂）溶接を行った場
合、ビット数。As can be seen from the results in Table 3, by using the welding wires (A-D) of the present invention examples with low Si and Mn, the bit,
Both Bronard and Tsusu-Muhor were recognized as being heavily adapted. In addition, for the welding wire of the comparative example, when performing downward (downhill) welding with pulsed MAG welding, the number of bits.
ブローホール数、ウオームナールともに水平溶接を行っ
た場合よりも悪くなるのに対し、本発明例のワイヤの場
合、水平溶接と下進溶接とで殆ど差がないことが確認さ
れた。作業現場の条件によっては下進溶接を行わざるを
得ない場合も多々あり、このような場合において本発明
例の溶接用ワイヤは特に効果を発揮することになる。It was confirmed that while both the number of blowholes and the worm knurl were worse than when horizontal welding was performed, in the case of the wire of the example of the present invention, there was almost no difference between horizontal welding and downward welding. Depending on the conditions at the work site, it is often necessary to perform downward welding, and the welding wire of the present invention is particularly effective in such cases.
以上本発明の実施例を詳述したが１本発明はその他の態
様で実施することも可能である。例えば必要に応じてワ
イヤ中に他の成分を添加することも勿論可能であるし、
また本発明のワイヤはパルスマグ溶接、炭酸ガスアーク
溶接の外通常のマグ溶接にも用いることが可能である等
、本発明はその主旨を逸脱しない範囲において、当業者
の知識に基づき様々な変形な加えた態様で実施すること
が可能である。Although the embodiments of the present invention have been described in detail above, the present invention can also be implemented in other embodiments. For example, it is of course possible to add other components to the wire as necessary,
Furthermore, the wire of the present invention can be used for regular MAG welding in addition to pulsed MAG welding and carbon dioxide arc welding, and the present invention can be modified and modified based on the knowledge of those skilled in the art without departing from the spirit thereof. It is possible to implement it in a different manner.
（発明の効果）
このように本発明の溶接用ワイヤを用いて亜鉛被覆鋼板
のカスシールドアーク溶接を行った場合、亜鉛蒸気の発
生にも拘らず溶接Ｂ８におけるピット、ブローホール等
溶接欠陥の発生が効果的に抑制される。これにより亜鉛
被覆鋼板に対する前処理を省略することが可能となり、
溶接作業の能率が大幅に向上する。(Effects of the Invention) As described above, when the welding wire of the present invention was used to perform cass shielded arc welding of zinc-coated steel sheets, welding defects such as pits and blowholes occurred in weld B8 despite the generation of zinc vapor. is effectively suppressed. This makes it possible to omit pre-treatment for zinc-coated steel sheets,
The efficiency of welding work is greatly improved.
第１図は本発明におけるＳｉ 、 Ｍｎの添加量の範囲
を、横軸にＭｎ量、縦軸にＳｉ量をとって示す図である
。FIG. 1 is a diagram showing the range of addition amounts of Si and Mn in the present invention, with the horizontal axis representing the Mn amount and the vertical axis representing the Si amount.
Claims (1)
．０３０％以下、Ｓ：０．０３０％以下の各範囲で含み
、且つＳｉ、Ｍｎを添付図第１図のＡ、Ｂ、Ｃ、Ｄ、Ｅ
で囲まれた範囲内で含有することを特徴とする亜鉛被覆
鋼板のガスシールドアーク溶接用ワイヤ。C, P, S in weight percentage: C: 0.15% or less, P: 0
．． S: 0.030% or less, S: 0.030% or less, and contains Si and Mn in A, B, C, D, and E of the attached diagram Figure 1.
A wire for gas-shielded arc welding of zinc-coated steel sheets, characterized by containing zinc within the range enclosed by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7689587A JPS63242488A (en) | 1987-03-30 | 1987-03-30 | Gas shielded arc welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7689587A JPS63242488A (en) | 1987-03-30 | 1987-03-30 | Gas shielded arc welding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63242488A true JPS63242488A (en) | 1988-10-07 |
Family
ID=13618383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7689587A Pending JPS63242488A (en) | 1987-03-30 | 1987-03-30 | Gas shielded arc welding wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63242488A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013133140A1 (en) | 2012-03-09 | 2013-09-12 | 株式会社神戸製鋼所 | Solid wire, and gas-shielded arc welding method using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758994A (en) * | 1980-09-25 | 1982-04-09 | Kobe Steel Ltd | Wire for low spatter carbon dioxide gas shielded arc welding |
| JPS5945096A (en) * | 1982-09-08 | 1984-03-13 | Daido Steel Co Ltd | Welding material |
| JPS59120395A (en) * | 1982-12-27 | 1984-07-11 | Daido Steel Co Ltd | Steel wire for welding |
| JPS60158995A (en) * | 1984-01-30 | 1985-08-20 | Kobe Steel Ltd | Mig welding wire for high-tension steel |
| JPS63112093A (en) * | 1986-10-30 | 1988-05-17 | Nippon Steel Corp | Solid wire for gas shield welding |
-
1987
- 1987-03-30 JP JP7689587A patent/JPS63242488A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758994A (en) * | 1980-09-25 | 1982-04-09 | Kobe Steel Ltd | Wire for low spatter carbon dioxide gas shielded arc welding |
| JPS5945096A (en) * | 1982-09-08 | 1984-03-13 | Daido Steel Co Ltd | Welding material |
| JPS59120395A (en) * | 1982-12-27 | 1984-07-11 | Daido Steel Co Ltd | Steel wire for welding |
| JPS60158995A (en) * | 1984-01-30 | 1985-08-20 | Kobe Steel Ltd | Mig welding wire for high-tension steel |
| JPS63112093A (en) * | 1986-10-30 | 1988-05-17 | Nippon Steel Corp | Solid wire for gas shield welding |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013133140A1 (en) | 2012-03-09 | 2013-09-12 | 株式会社神戸製鋼所 | Solid wire, and gas-shielded arc welding method using same |
| US9616528B2 (en) | 2012-03-09 | 2017-04-11 | Kobe Steel, Ltd. | Solid wire, and gas-shielded arc welding method using same |
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