JPH0780678A - Gas shielded arc welding wire - Google Patents
Gas shielded arc welding wireInfo
- Publication number
- JPH0780678A JPH0780678A JP24851493A JP24851493A JPH0780678A JP H0780678 A JPH0780678 A JP H0780678A JP 24851493 A JP24851493 A JP 24851493A JP 24851493 A JP24851493 A JP 24851493A JP H0780678 A JPH0780678 A JP H0780678A
- Authority
- JP
- Japan
- Prior art keywords
- arc welding
- pits
- gas shielded
- 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.)
- Withdrawn
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- Arc Welding In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は亜鉛めっき鋼板などの防
錆処理を施した鋼板をガスシールドアーク溶接した時、
ピットやブローホールなどの溶接欠陥が少なく、ビード
外観の優れた溶接金属が得られ、またスラグ生成量が少
なく、しかもスパッタ発生量の少ないガスシールドアー
ク溶接ワイヤに関する。BACKGROUND OF THE INVENTION The present invention is directed to gas shield arc welding of a steel sheet that has been subjected to rust prevention treatment, such as a galvanized steel sheet.
The present invention relates to a gas shielded arc welding wire which has few welding defects such as pits and blowholes, produces a weld metal having an excellent bead appearance, produces a small amount of slag, and produces a small amount of spatter.
【０００２】[0002]
【従来の技術】亜鉛めっき鋼板などの防錆処理を施した
鋼板の主な用途は薄板鋼板の分野が多く、自動車車体の
足廻り部材や建築・建材など多くの分野に使用される傾
向にある。また耐食性向上を目的にめっき付着量の多い
厚目付け材の使用や、各種のめっき組成による表面処理
鋼板の開発が進められている。2. Description of the Related Art The main application of rustproof steel sheets such as galvanized steel sheets is in the field of thin steel sheets, and tends to be used in many fields such as underbody parts of automobile bodies and construction / construction materials. . Further, for the purpose of improving corrosion resistance, the use of thick coating materials with a large amount of plating and the development of surface-treated steel sheets with various plating compositions are being promoted.
【０００３】しかしながら、上記表面処理鋼板をガスシ
ールドアーク溶接をした場合、鉄の融点より低い沸点
（９０６℃）のめっき層の亜鉛が溶接熱により、亜鉛蒸
気となって溶融池や溶滴に侵入して溶接金属の凝固過程
で浮上できずに気泡として残留し、ピットやブローホー
ル等の溶接欠陥となる。また溶融池状態は突沸し乱れる
ためアーク状態は不安定となりスパッタの発生を著しく
多くさせる。さらには溶接ビード表面の平滑性も劣り良
好なビード外観を得ることが困難であった。However, when the above-mentioned surface-treated steel sheet is subjected to gas shield arc welding, zinc in the plating layer having a boiling point (906 ° C.) lower than the melting point of iron becomes zinc vapor due to welding heat and enters the molten pool and droplets. Then, in the solidification process of the weld metal, the metal cannot be floated and remains as bubbles, resulting in welding defects such as pits and blow holes. Further, the molten pool state is bumped and disturbed, so that the arc state becomes unstable and the spatter is remarkably increased. Furthermore, the smoothness of the weld bead surface was poor and it was difficult to obtain a good bead appearance.
【０００４】このような亜鉛めっき鋼板のガスシールド
アーク溶接による弊害を軽減する手段としては、あらか
じめ溶接部のめっき層を機械的に除去することが有効で
あるが、非能率的でコスト高となる。また亜鉛めっき鋼
板に対するピット、ブローホールの溶接欠陥防止技術と
して特開昭６４−５７９７９号公報にはソリッドワイヤ
中にＣ，Ｓｉ，ＭｎおよびＭｏを基本成分としてＭｏを
０．１０〜１．００％含有させる溶接材料が提案されて
いる。しかしながら、かかる組成のソリッドワイヤはＭ
ｏを多く含むため原材料価格が高くなり経済的効果が期
待できない。As a means for reducing the adverse effects of such gas shielded arc welding of galvanized steel sheet, it is effective to mechanically remove the plating layer of the welded portion in advance, but it is inefficient and costly. . Further, as a technique for preventing welding defects of pits and blow holes on galvanized steel sheets, Japanese Patent Laid-Open No. 64-57979 discloses a solid wire containing C, Si, Mn and Mo as basic components and containing 0.1 to 1.00% of Mo. A welding material to be contained has been proposed. However, the solid wire of such composition has M
Since it contains a large amount of o, the raw material price is high and no economic effect can be expected.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記問題点を
解決するためになされたもので、亜鉛めっき鋼板などの
ガスシールドアーク溶接において問題となるピット、ブ
ローホール等の溶接欠陥発生が少なく、スパッタ発生量
およびスラグ生成量が少ない、ビード外観に優れた溶接
金属が得られるガスシールドアーク溶接用ワイヤを提供
するものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the occurrence of welding defects such as pits and blowholes, which is a problem in gas shielded arc welding of galvanized steel sheets, is reduced. It is intended to provide a wire for gas shield arc welding, which produces a weld metal having a small bead generation amount and a slag generation amount and an excellent bead appearance.
【０００６】[0006]
【課題を解決するための手段】本発明の要旨は、重量％
でＣ；０．０３〜０．１５％、Ｓｉ；１．００〜２．５
０％、Ｍｎ；０．１０〜１．００％、ただしＭｎ／Ｓｉ
が０．６５％以下の範囲にあり、Ｐ；０．０１３％以
下、Ａｌ，Ｔｉのうち一種または二種の合計で０．００
５〜０．２００％、Ｓ，Ｏのうち一種または二種の合計
で０．００５０〜０．０５００％を含有し、残部がＦｅ
および不可避不純物からなることを特徴とするガスシー
ルドアーク溶接用ワイヤにある。SUMMARY OF THE INVENTION The gist of the present invention is the weight%
C: 0.03 to 0.15%, Si: 1.00 to 2.5
0%, Mn; 0.10 to 1.00%, but Mn / Si
Is in the range of 0.65% or less, P: 0.013% or less, and the total of one or two of Al and Ti is 0.00
5 to 0.200%, 0.005 to 0.0500% in total of one or two kinds of S and O, with the balance being Fe
And a wire for gas shielded arc welding, which is characterized by comprising unavoidable impurities.
【０００７】[0007]
【作用】ガスシールドアーク溶接では既述のごとく、亜
鉛めっき鋼板でのピットやブローホールが発生し易い理
由として、以下の事項に整理される。 （イ）溶接時、溶融金属に入った亜鉛は鉄に溶解しにく
く、かつ低沸点であるため溶融金属が凝固過程において
も蒸気状態であり、これが残存し気泡となる。 （ロ）亜鉛めっき鋼板のアーク溶接ではガス化した亜鉛
蒸気の突沸によりアークが不安定になり易いこと、また
表面処理鋼板等の薄板鋼板では、溶接電流を低めにする
とか、溶接速度を速めた溶接条件を選定するため凝固速
度が速くなり、従って溶融金属中でガス化した亜鉛蒸気
が凝固過程で浮上しきれず溶接金属中に残留し易くな
る。 （ハ）ガスシールドアーク溶接では清浄な溶接金属を得
るため、Ｓｉ，Ｍｎなどの脱酸力の強い元素を適宜添加
し脱酸作用効果を得るようにしている。そのため、Ｓ
ｉ，Ｍｎなど脱酸性元素不足でガスシールドアーク溶接
を行った場合、脱酸不足となりアーク状態が不安定にな
りスパッタが多発したり、健全な溶接ビードを形成する
ことが困難となりビード外観も不揃いとなる。[Function] As described above, in gas shielded arc welding, the reasons why pits and blow holes are likely to occur in galvanized steel sheets are summarized as follows. (A) During welding, zinc that has entered the molten metal is difficult to dissolve in iron and has a low boiling point, so the molten metal is in a vapor state even during the solidification process, and remains as bubbles. (B) In arc welding of galvanized steel sheets, the arc is likely to become unstable due to bumping of gasified zinc vapor, and for thin steel sheets such as surface-treated steel sheets, the welding current is lowered or the welding speed is increased. Since the welding conditions are selected, the solidification rate becomes faster, so that the zinc vapor gasified in the molten metal cannot be fully floated in the solidification process and is likely to remain in the weld metal. (C) In gas shielded arc welding, in order to obtain a clean weld metal, elements having a strong deoxidizing power such as Si and Mn are appropriately added to obtain a deoxidizing effect. Therefore, S
When gas shielded arc welding is performed due to lack of deoxidizing elements such as i and Mn, deoxidation becomes insufficient, the arc state becomes unstable, spatter frequently occurs, and it is difficult to form a sound weld bead, and the bead appearance is uneven. Becomes
【０００８】これらの影響を軽減しピット、ブローホー
ルを防止するには以下の対策が有効と考えた。 （ａ）ガスシールドアーク溶接では清浄な溶接金属を得
るために、脱酸力の強いＳｉ，Ｍｎ，Ａｌなどを適宜添
加し脱酸効果を調整すること。また溶滴の短絡回数の適
正化をすることにより、溶滴の移行性が向上しアーク安
定性が改善される。さらに溶融池の攪拌作用も安定化さ
れ溶融池からのガス放出を容易にする。 （ｂ）溶融池の酸素ポテンシャルを適正化し、また溶融
池の亜鉛蒸気を高融点の酸化亜鉛と化してスラグオフさ
せる。The following measures were considered effective for reducing these effects and preventing pits and blow holes. (A) In gas shielded arc welding, in order to obtain a clean weld metal, Si, Mn, Al having a strong deoxidizing power are appropriately added to adjust the deoxidizing effect. Further, by optimizing the number of times the droplets are short-circuited, the droplet transferability is improved and the arc stability is improved. Furthermore, the stirring action of the molten pool is also stabilized, facilitating gas release from the molten pool. (B) The oxygen potential of the molten pool is optimized, and zinc vapor in the molten pool is converted to high melting point zinc oxide to slag off.
【０００９】本発明者らは上記の観点からワイヤ組成に
ついて検討を行い本発明を構成するに至った。すなわ
ち、表面処理を施した鋼板は薄板が多く、ガスシールド
アーク溶接においては溶融池の溶け落ち等を考慮し、高
速溶接あるいは小入熱での溶接施工になるため、凝固速
度が早く溶融池が急冷されるため脱酸反応が起こり難く
なる。そこで適度の脱酸作用効果が得られるように、溶
接用ワイヤにはＳｉ，Ｍｎ，Ａｌなどの脱酸力の強い元
素を適量添加し、脱酸力を適正化すること、また溶滴移
行性を安定化にすることにより溶融池からのガス放出を
容易にし清浄な溶接金属を得るようにしている。The present inventors have studied the composition of the wire from the above viewpoint, and have completed the present invention. In other words, the surface-treated steel sheet is often a thin sheet, and in gas shielded arc welding, considering the meltdown of the molten pool, etc., high-speed welding or welding with a small heat input is performed, so the solidification rate is fast and the molten pool is Since it is rapidly cooled, the deoxidation reaction is less likely to occur. Therefore, in order to obtain an appropriate deoxidizing effect, a suitable amount of elements with strong deoxidizing power such as Si, Mn, and Al should be added to the welding wire to optimize the deoxidizing power, and the droplet transferability should be improved. By stabilizing the gas, the release of gas from the molten pool is facilitated and a clean weld metal is obtained.
【００１０】以下に本発明のワイヤの成分限定理由につ
いて述べる。Ｃは溶滴移行段階で溶滴周辺のＣＯ分圧を
高めＣＯの吹き出しを活発にして周辺から溶滴へ侵入し
ようとする亜鉛および窒素を抑制しピット、ブローホー
ルの発生を抑制する。ＣはＳｉ，Ｍｎ，Ａｌ，Ｔｉ等の
添加量の兼合いで決まり、本発明のＳｉ，Ｍｎ，Ａｌ，
Ｔｉ等の添加量では０．１５％を超えてもピット、ブロ
ーホールの発生は少ないがワイヤに加工する場合、伸線
性が劣化すること、さらに溶接金属の強度が高まるため
上限を０．１５％とした。また０．０３％未満ではピッ
トが多発するので下限は０．０３％とした。The reasons for limiting the components of the wire of the present invention will be described below. C increases the CO partial pressure around the droplet at the droplet transfer stage and activates the blowing of CO to suppress zinc and nitrogen that try to enter the droplet from the periphery and suppress the formation of pits and blow holes. C is determined by the balance of the addition amounts of Si, Mn, Al, Ti, etc., and Si, Mn, Al,
Even if the addition amount of Ti or the like exceeds 0.15%, pits and blowholes are rarely generated, but when processed into a wire, the drawability deteriorates and the strength of the weld metal increases, so the upper limit is 0.15%. And If it is less than 0.03%, pits frequently occur, so the lower limit was made 0.03%.
【００１１】Ｓｉ及びＭｎは脱酸剤として添加するが、
ガスシールドアーク溶接ではＳｉ及びＭｎの脱酸力の強
い元素を適宜添加し脱酸力を調整することにより、溶融
金属の酸素ポテンシャルを適正化し亜鉛の酸化を促進
し、かつ溶融金属の粘性を低めてガスを浮上し易くす
る。さらには溶滴の短絡移行特性改善により移行性を安
定化すること、また溶融池の攪拌作用を安定化すること
によりガス放出を容易にするため、ガス化した亜鉛蒸気
によるピット、ブローホールの発生を抑制する。しか
し、Ｓｉは１．００％、Ｍｎは０．１０％以下では脱酸
不足となり健全な溶接ビードを形成することができない
ので、Ｓｉ，Ｍｎの下限値はそれぞれ１．００％および
０．１０％にした。Si and Mn are added as deoxidizing agents,
In gas shielded arc welding, elements with strong deoxidizing power such as Si and Mn are appropriately added to adjust the deoxidizing power, thereby optimizing the oxygen potential of the molten metal to accelerate the oxidation of zinc and lower the viscosity of the molten metal. To make it easier to float the gas. Furthermore, in order to stabilize the transferability by improving the short-circuit transfer characteristics of the droplets and to facilitate gas release by stabilizing the stirring action of the molten pool, the formation of pits and blowholes by the gasified zinc vapor. Suppress. However, if Si is 1.00% and Mn is 0.10% or less, deoxidation becomes insufficient and a sound weld bead cannot be formed. Therefore, the lower limits of Si and Mn are 1.00% and 0.10%, respectively. I chose
【００１２】Ｓｉの上限は溶接金属の強度が高まるため
２．５０％とし、Ｍｎの上限は１．００％以上ではピッ
ト、ブローホールが多発するので１．００％にした。ま
た上記Ｓｉ，Ｍｎの範囲においてＭｎ／Ｓｉが０．６５
％を超えるとピット、ブローホールの発生が増加するの
で、Ｍｎ／Ｓｉを０．６５％以下とした。The upper limit of Si is set to 2.50% because the strength of the weld metal increases, and the upper limit of Mn is set to 1.00% because pits and blowholes frequently occur at 1.00% or more. In the range of Si and Mn, Mn / Si is 0.65.
%, The occurrence of pits and blow holes increases, so Mn / Si was set to 0.65% or less.
【００１３】Ａｌ，Ｔｉは強脱酸成分であり、少量の添
加でピット、ブローホールの発生を防止できる。しかし
Ａｌ，Ｔｉの一種または二種の合計で０．００５％以下
ではその効果は少なく、０．２００％以上では溶着金属
は著しく硬化し耐割れ性を低下させるので０．００５〜
０．２００％とした。Al and Ti are strong deoxidizing components, and the addition of a small amount can prevent the formation of pits and blow holes. However, if the total of one kind or two kinds of Al and Ti is 0.005% or less, the effect is small, and if it is 0.200% or more, the weld metal is significantly hardened and the crack resistance is lowered, so 0.005 to 0.005
It was 0.200%.
【００１４】Ｐは耐割れ性を阻害する元素であり、特に
本発明のＳｉ，Ｍｎ，Ａｌ，Ｔｉの範囲においてはでき
る限り抑制することが好ましく、０．０１３％以下にし
なければならない。P is an element that inhibits crack resistance, and it is particularly preferable to suppress it in the range of Si, Mn, Al, and Ti of the present invention, and it must be 0.013% or less.
【００１５】Ｓは一般的には溶接金属の割れ性等の点か
ら、その添加量を抑制する元素である。しかしながらＳ
は適量添加によってビード形状、ビード表面に付着する
スラグ被包面積を減少する等の効果がある。この効果は
Ｓを単独で添加した場合よりもＯと共存させた方が大き
く、耐割れ性も考慮しこれら一種または二種の合計で
０．００５０〜０．０５００％で効果が顕著に発揮され
る。S is generally an element that suppresses the amount of addition thereof from the viewpoint of the crackability of the weld metal. However, S
Has the effect of reducing the bead shape and the slag encapsulation area attached to the bead surface by adding an appropriate amount. This effect is greater when S coexists with O than when S is added alone, and considering the crack resistance, the effect is remarkably exhibited at 0.0050 to 0.0500% in total of one or two of these. It
【００１６】本発明は脱酸力の強い元素を適量添加し
て、溶滴の移行性を容易にし、また安定化するようなワ
イヤ成分構成としている。このように構成された成分の
ワイヤを用いて、ガスシールドアーク溶接により亜鉛め
っき鋼板を溶接してもピット、ブローホールの発生が非
常に少なく、ビード外観・ビード形状の優れた溶接金属
が得られるので、溶接部は構造物用として十分満足する
ものである。またスパッタ発生量の少ない溶接が行える
ため、ガスノズルや給電チップに付着するスパッタ除去
作業頻度も軽減できるため、大幅なコスト低減が計られ
る。In the present invention, a wire component structure is provided in which an appropriate amount of an element having a strong deoxidizing power is added to facilitate and stabilize the migration of droplets. Even if a galvanized steel sheet is welded by gas shielded arc welding using a wire of such a composition, the occurrence of pits and blow holes is extremely small, and a weld metal with an excellent bead appearance and bead shape can be obtained. Therefore, the welds are fully satisfactory for structural applications. In addition, since welding with a small amount of spatter can be performed, the frequency of removing spatter attached to the gas nozzle and the power supply tip can be reduced, resulting in a significant cost reduction.
【００１７】[0017]
【実施例】以下に、本発明の効果を実施例により具体的
に説明する。表１にはＣＯ2 溶接の場合のワイヤ化学成
分と継手溶接におけるピット発生個数、ブローホール発
生率およびビード外観性能等を評価した結果を示した。
また表２にはＡｒ−２０％ＣＯ2 溶接の場合のワイヤ化
学成分と継手溶接におけるピット発生個数、ブローホー
ル発生率およびビード外観性能等を評価した結果を示し
た。溶接性能評価には表３に示す鋼板を用いて表４に示
す溶接条件で行った。またビード外観およびビード形状
の評価項目は表５に示している。EXAMPLES The effects of the present invention will be specifically described below with reference to examples. Table 1 shows the results of evaluation of the chemical composition of wire in the case of CO 2 welding, the number of pits generated in joint welding, the rate of blowhole generation, bead appearance performance, and the like.
In addition, Table 2 shows the results of evaluation of the chemical composition of wire in the case of Ar-20% CO 2 welding, the number of pits generated in joint welding, the rate of blowhole generation, bead appearance performance, and the like. The welding performance evaluation was performed using the steel plates shown in Table 3 under the welding conditions shown in Table 4. Table 5 shows the bead appearance and bead shape evaluation items.
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【表２】 [Table 2]
【００２０】[0020]
【表３】 [Table 3]
【００２１】[0021]
【表４】 [Table 4]
【００２２】[0022]
【表５】 [Table 5]
【００２３】溶接終了後、ビード表面のピット個数を計
測し、ビード外観を評価した。ビード外観の評価におい
て○は良好、×は劣ることを示している。その後溶接ビ
ードを放射線透過試験にてビードに内在するブローホー
ル発生状況を調査した。ピットは、ビード１ｍに換算し
て発生個数（個／ｍ）として評価した。またブローホー
ルは放射線透過試験のフィルムからビード長手方向のブ
ローホール幅を測定し、ビード長に対してのブローホー
ル幅総和からブローホール発生率（％）を計算した。After the completion of welding, the number of pits on the bead surface was counted to evaluate the bead appearance. In the evaluation of the bead appearance, ◯ means good and x means poor. Then, the weld bead was examined for the occurrence of blowholes in the bead by a radiation transmission test. The number of pits was converted into 1 m of beads and evaluated as the number of generated pits (number / m). For blowholes, the blowhole width in the longitudinal direction of the bead was measured from the film of the radiation transmission test, and the blowhole generation rate (%) was calculated from the total blowhole width with respect to the bead length.
【００２４】表１はＣＯ2 溶接の場合でありワイヤＮ
ｏ．１〜７は本発明ワイヤを示しＣが０．０３〜０．１
５％、Ｓｉが１．００〜２．５０％、Ｍｎが０．１０〜
１．００％にあり、Ｍｎ／Ｓｉが０．６５％以下、Ｐは
０．０１３％以下、Ａｌ，Ｔｉは一種または二種の合計
で０．００５〜０．２００％、Ｓ，Ｏのうち一種または
二種の合計で０．００５０〜０．０５００％の範囲にあ
る。Table 1 shows the case of CO 2 welding and wire N
o. 1-7 shows the wire of this invention, C is 0.03-0.1.
5%, Si 1.00 to 2.50%, Mn 0.10 to
1.00%, Mn / Si is 0.65% or less, P is 0.013% or less, Al and Ti are 0.005 to 0.200% in total of one or two, and S and O It is in the range of 0.0050 to 0.0500% in total of one kind or two kinds.
【００２５】またＮｏ．８〜１３は比較ワイヤを示す。
Ｎｏ．１〜７の本発明ワイヤではピットの発生は無く、
ビード外観は良好であり、さらにブローホール発生率も
非常に低い健全な溶接金属が得られている。No. Reference numerals 8 to 13 represent comparative wires.
No. No pits were generated in the wires of the present invention of 1 to 7,
The bead appearance is good, and a sound weld metal with a very low blowhole occurrence rate is obtained.
【００２６】一方、Ｓｉ，Ｍｎ量が本発明の範囲以下で
あるＮｏ．８、Ｎｏ．１２はシールド不足が起因すると
考えられるピット、ブローホールが多発し、ビード外観
も劣っている。また、Ｍｎ量が本発明の範囲を超えるＮ
ｏ．９、Ｓｉ量が本発明の範囲を超えるＮｏ．１０はピ
ット、ブローホールは少ないが、ビードに割れが生じビ
ード外観が劣った。さらにＣ，Ｓｉ，Ｓ＋Ｏ共に本発明
範囲を超えるＮｏ．１１はピット、ブローホールは少な
いが合金元素過剰によるビード割れが発生しビード外観
が不良である。Ｃ量が本発明の範囲以下であり、Ａｌ，
Ｔｉ添加の無いＮｏ．１３は、亜鉛の影響を受け易く、
ピット発生個数、ブローホールの発生率が高くなってい
る。On the other hand, in No. 3 in which the amounts of Si and Mn are within the range of the present invention. 8, No. No. 12 has many pits and blow holes, which are thought to be due to insufficient shield, and the bead appearance is also inferior. Further, the amount of Mn exceeds N in the range of the present invention.
o. 9, No. 9 in which the amount of Si exceeds the range of the present invention. No. 10 had few pits and blow holes, but the bead cracked and the bead appearance was inferior. Further, C., Si, and S + O all have No. No. 11 has few pits and blowholes, but bead cracking occurs due to excess alloying elements and the bead appearance is poor. If the amount of C is below the range of the present invention, Al,
No. without Ti addition 13 is easily affected by zinc,
The number of pits and blowholes are high.
【００２７】表２はＡｒ−２０％ＣＯ2 溶接の場合であ
り、ワイヤＮｏ．１〜７は本発明ワイヤを示しＣが０．
０３〜０．１５％、Ｓｉが１．００〜２．５０％、Ｍｎ
が０．１０〜１．００％にありＭｎ／Ｓｉが０．６５％
以下、Ｐは０．０１３％以下、Ａｌ，Ｔｉは一種または
二種の合計で０．００５〜０．２００％、Ｓ，Ｏのうち
一種または二種の合計で０．００５０〜０．０５００％
の範囲にある。Table 2 shows the case of Ar-20% CO 2 welding, wire No. 1 to 7 represent the wire of the present invention, and C is 0.
03-0.15%, Si 1.00-2.50%, Mn
Is 0.10 to 1.00% and Mn / Si is 0.65%
Below, P is 0.013% or less, Al and Ti are 0.005 to 0.200% in total of one or two, and 0.0050 to 0.0500% in total of one or two of S and O.
Is in the range.
【００２８】またＮｏ．８〜１２は比較ワイヤを示す。
Ｎｏ．１〜７の本発明ワイヤではピットの発生は無く、
ビード外観は良好であり、さらにブローホール発生率も
非常に低い健全な溶接金属が得られている。No. 8-12 shows a comparative wire.
No. No pits were generated in the wires of the present invention of 1 to 7,
The bead appearance is good, and a sound weld metal with a very low blowhole occurrence rate is obtained.
【００２９】比較ワイヤにおいてはＳｉ、Ｍｎ量が本発
明の範囲以下であるＮｏ．１１、Ｎｏ．１２はシールド
不足が起因すると考えられるピット、ブローホールが多
発し、ビード外観も劣っている。またＭｎ量が本発明の
範囲を超えるＮｏ．１０、Ｓｉ量が本発明の範囲を超え
るＮｏ．９はピット、ブローホールは少ないが、ビード
に割れが生じビード外観が劣った。またＣ、Ｓｉ、Ｍ
ｎ、Ｓ＋Ｏ共に本発明範囲を超えるＮｏ．８は合金元素
過剰によるビード割れが発生しビード外観が不良であ
る。In the comparative wire, the numbers of Si and Mn are below the range of the present invention. 11, No. No. 12 has many pits and blow holes, which are thought to be due to insufficient shield, and the bead appearance is also inferior. Further, in the case of No. 3 whose Mn amount exceeds the range of the present invention. No. 10, in which the amount of Si exceeds the range of the present invention. No. 9 had few pits and blow holes, but the bead cracked and the bead appearance was inferior. C, Si, M
No. n and S + O both exceed the scope of the present invention. In No. 8, bead cracking occurred due to excess alloying elements and the bead appearance was poor.
【００３０】このように、本発明により始めて、亜鉛め
っき鋼板など防錆処理を施した鋼材を炭酸ガスアーク溶
接してもピットが無く、ビード外観の良好なしかもブロ
ーホールの発生が非常に少ない健全な溶接金属部が得ら
れることが明らかである。Thus, for the first time according to the present invention, even if a steel material such as a galvanized steel sheet subjected to anticorrosion treatment is subjected to carbon dioxide arc welding, there is no pit, the bead appearance is excellent, and the occurrence of blowholes is very small. It is clear that a weld metal part is obtained.
【００３１】[0031]
【発明の効果】以上のように本発明ワイヤにおいては、
亜鉛めっき鋼板など防錆処理を施した鋼材をガスシール
ドアーク溶接をしてもピットが無くブローホールが非常
に少ない、ビード外観の良好な溶接金属が得られるた
め、溶接金属部の断面欠損にならず構造物の強度を低下
させない溶接部が得られる。As described above, in the wire of the present invention,
Even if gas shielded arc welding is applied to steel materials that have undergone anti-corrosion treatment, such as galvanized steel sheets, there are no pits, very few blow holes, and a weld metal with a good bead appearance can be obtained. A welded part that does not reduce the strength of the structure is obtained.
Claims (1)
Ｓｉ；１．００〜２．５０％、Ｍｎ；０．１０〜１．０
０％、ただし、Ｍｎ／Ｓｉが０．６５％以下の範囲にあ
り、Ｐ；０．０１３％以下、Ａｌ，Ｔｉのうち一種また
は二種の合計で０．００５〜０．２００％、Ｓ，Ｏのう
ち一種または二種の合計で０．００５０〜０．０５００
％を含有し、残部がＦｅおよび不可避不純物からなるこ
とを特徴とするガスシールドアーク溶接ワイヤ。1. C, 0.03 to 0.15% by weight,
Si; 1.00 to 2.50%, Mn; 0.10 to 1.0
0%, but Mn / Si is in the range of 0.65% or less, P; 0.013% or less, 0.005 to 0.200% in total of one or two of Al and Ti, S, 0.0050 to 0.0500 in total of one or two of O
%, With the balance being Fe and unavoidable impurities, a gas shielded arc welding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24851493A JPH0780678A (en) | 1993-09-10 | 1993-09-10 | Gas shielded arc welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24851493A JPH0780678A (en) | 1993-09-10 | 1993-09-10 | Gas shielded arc welding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0780678A true JPH0780678A (en) | 1995-03-28 |
Family
ID=17179321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24851493A Withdrawn JPH0780678A (en) | 1993-09-10 | 1993-09-10 | Gas shielded arc welding wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0780678A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006021224A (en) * | 2004-07-07 | 2006-01-26 | Kobe Steel Ltd | Solid wire for laser arc compound welding, and laser arc compound welding method |
| 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 |
-
1993
- 1993-09-10 JP JP24851493A patent/JPH0780678A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006021224A (en) * | 2004-07-07 | 2006-01-26 | Kobe Steel Ltd | Solid wire for laser arc compound welding, and laser arc compound welding method |
| JP4498039B2 (en) * | 2004-07-07 | 2010-07-07 | 株式会社神戸製鋼所 | Solid wire for laser / arc combined welding and laser / arc combined welding method |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20001128 |