JPH0366997B2 - - Google Patents
Info
- Publication number
- JPH0366997B2 JPH0366997B2 JP57155136A JP15513682A JPH0366997B2 JP H0366997 B2 JPH0366997 B2 JP H0366997B2 JP 57155136 A JP57155136 A JP 57155136A JP 15513682 A JP15513682 A JP 15513682A JP H0366997 B2 JPH0366997 B2 JP H0366997B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- welding
- steel plates
- welded
- less
- 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 42
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 9
- 239000011148 porous material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
- Arc Welding In General (AREA)
Description
この発明は、防錆処理を施した塗装鋼板類の溶
接に使用される塗装鋼板用溶接材料に関するもの
である。
タンク，橋梁，船舶，自動車等の各種鋼構造物
は、その製作あるいは組立て中における腐食を防
止するために、あらかじめ防錆処理としてプライ
マを塗装した鋼板類を使用し、その後適宜切断溶
接して製作あるいは組立てることが多い。この際
の防錆処理として、ウオツシユプライマやジンク
リツチ系のシヨツププライマを塗装することがよ
く行われる。ジンクリツチ系のシヨツププライマ
には、有機系のもの（例えば、亜鉛末＋エポキシ
樹脂等）や、無機系のもの（例えば、亜鉛末＋エ
チルシリケート等）などがあるが、このようなシ
ヨツププライマは、亜鉛末の犠牲陽極作用によつ
て鋼板類の腐食を防止する作用を有するものであ
る。
しかしながら、この種のシヨツププライマを塗
装した鋼板類をそのまま溶接した場合には、樹脂
の燃焼や亜鉛のガス化により溶接時のアークを乱
し、スパツタの発生を多くし、溶接部にピツトや
ブローホール等の溶接欠陥が発生しやすく、溶接
部の機械的強度に悪影響を及ぼすことがあるとい
う問題点があつた。
そこで、塗装鋼板類の溶接に先立つて、溶接部
の塗膜を研削等によつて除去することもあるが、
このような除去作業は極めて面倒で手間のかかる
ものであるため、鋼構造物の施工能率を著しく低
下させる原因となつていた。それゆえ、塗料中の
亜鉛末量を少なくしてブローホールの如き気孔の
発生を低下させようとする試みもあるが、このよ
うなプライマを使用したとしても気孔の発生を防
ぐことは困難であつた。
この発明は、上記した従来の問題点を解消する
ためになされたもので、シヨツププライマを施し
た塗装鋼板類の溶接に際して溶接部の塗膜を除去
することなくそのまま溶接したとしても、溶接部
においてピツトやブローホール等の溶接欠陥が発
生せず、溶接部の機械的強度が良好であり、鋼構
造物の施工能率を高めることができる塗装鋼板用
溶接材料を提供することを目的としている。
この発明による塗装鋼板用溶接材料は、表面に
塗装を施した塗装鋼板類の溶接に使用される塗装
鋼板用溶接材料であつて、Ｃ：0.15重量％以下、
Si：1.0重量％以下、Mn：3.0重量％以下を基本
成分として含有し、その他必要に応じてNi，Al，
Co，Zr，Ｗ，Mo，Cr等を含む鋼に、Ti：0.05超
過〜0.3重量％を含有させると共に、Se，Te，Sb
のうちから選んだ１種または２種以上を合計で
0.005〜0.1重量％と、Ｓ：0.04〜0.1重量％との一
方または両方を含有させたことを特徴としてい
る。
そして、この発明による塗装鋼板用溶接材料
は、被覆アーク溶接棒，サブマージアーク溶接の
溶接ワイヤとして使用され、さらには、ガスシー
ルドアーク溶接（MIG溶接，TIG溶接，CO2溶
接，MAG溶接，MAGパルス溶接等）において、
消耗電極方式の場合の溶接ワイヤとして、あるい
は非消耗電極方式の場合の溶加ワイヤ，溶加棒と
して使用される。
次にこの発明による塗装鋼板用溶接材料の化学
成分（重量％）の限定理由について説明する。
Ｃ：0.15重量％以下
Ｃは溶接部の機械的強度を確保するために必要
な元素であるが、多量に含有すると溶接部の耐食
性を劣化させるので、0.15重量％以下とする。
Si：1.0重量％以下
Siは脱酸剤として有効な元素であり、好ましく
は0.2重量％以上含有させるのが良い。また、0.5
重量％以上でアーク安定性および耐酸化性を向上
させる効果がある。しかし、1.0重量％を超える
と靭性が劣化し、高温脆化を起すので、1.0重量
％以下とする必要がある。
Mn：3.0重量％以下
Mnは脱酸剤として効果があると共に、溶接部
の強度を向上させるのに寄与する元素であり、好
ましくは、0.5重量％以上含有させるのが良い。
しかし、3.0重量％を超えるとビード形状が悪化
し、耐食性や加工性を劣化させるので、3.0重量
％以下とする必要がある。
以上が鋼中に含まれる元素の基本成分である
が、そのほか、強度，靭性を向上させるために
Ni：0.5〜５重量％、Mo：0.1〜1.0重量％等を含
有させることも必要に応じて望ましい。
この発明の塗装鋼板用溶接材料においては、上
記基本成分に加えてTiを含有させ、さらにSe，
Te，Sbの１種または２種以上とＳとの一方また
は両方を含有させるが、これらの成分範囲の限定
理由は次のとおりである。
Ti：0.05超過〜0.3重量％
Tiは溶接時におけるアーク安定性を向上させ
ると共にスパツタの発生を減少させ、溶接部の強
度を向上させるのに有効な元素であつて、この効
果を得るために0.05重量％超過含有させる。しか
し、0.3重量％を超えて含有させてもアーク安定
効果は飽和し、かえつて溶接部の機械的特性を低
下させるので、0.05超過〜0.3重量％の範囲とす
る。
Se，Te，Sb，：0.005〜0.1重量％
Ｓ：0.04〜0.1重量％
一方または両方
Se，Te，SbおよびＳは、溶接部における気孔
の発生を防止するのに有効な元素であつて、Se，
Te，Sbの１種または２種以上と、Ｓとのうちの
一方または両方を含有させる。そして、Se，Te，
Sbの１種または２種以上を含有させる場合には、
上記の効果を得るために合計で0.005重量％以上
含有させるが、多すぎると溶接部が脆化して機械
的強度を低下させると共に高価でもあるので、こ
れらの合計で0.1重量％以下とする。また、Ｓを
含有させる場合には、上記の効果を得るために
0.04重量％以上含有させるが、多すぎると溶接部
が脆化して機械的強度を低下させるので、0.1重
量％以下とする。
以下、実施例について説明する。
まず、表に示す鋼組成の溶接材料（直径1.2mm
の溶接ワイヤ）を製作し、添付図面に示す隅肉部
Ａの溶接をパルスMAG溶接により行つた。この
ときの溶接条件は、電流250A，220パルス／秒，
シールドガス（80％Ar＋20％CO2），ビード長さ
20cmとした。また、図に示す塗装鋼板１，２の塗
装面１ａ，２ａは、40％亜鉛末を含む無機ジンク
プライマを塗装したものである。
次いで、各溶接部をＸ線により撮影して気孔の
数を調べたところ、同じく表に示す結果が得られ
た。
The present invention relates to a welding material for painted steel plates that is used for welding painted steel plates that have been subjected to rust prevention treatment. Various steel structures such as tanks, bridges, ships, and automobiles are manufactured using steel plates that have been coated with a primer to prevent rust in order to prevent corrosion during manufacture or assembly, and then are cut and welded as appropriate. Or often assembled. As a rust preventive treatment at this time, coating with a wash primer or a zinc-rich short primer is often performed. Zinc-based shot primers include organic types (e.g., zinc dust + epoxy resin, etc.) and inorganic types (e.g., zinc dust + ethyl silicate, etc.). It has the effect of preventing corrosion of steel plates through the sacrificial anode action of zinc powder. However, if steel plates coated with this type of short primer are welded as they are, the burning of the resin and the gasification of the zinc will disturb the arc during welding, increase the occurrence of spatter, and cause pits and blowouts in the welded area. There was a problem in that welding defects such as holes were likely to occur, which could adversely affect the mechanical strength of the welded part. Therefore, before welding painted steel plates, the coating film on the welded area is sometimes removed by grinding, etc.
Since such removal work is extremely troublesome and time-consuming, it has caused a significant decrease in the construction efficiency of steel structures. Therefore, there are attempts to reduce the occurrence of pores such as blowholes by reducing the amount of zinc powder in the paint, but even if such primers are used, it is difficult to prevent the occurrence of pores. Ta. This invention was made to solve the above-mentioned conventional problems, and even when welding coated steel plates coated with a short primer, even if the welding area is welded as is without removing the paint film, the welding area The purpose of the present invention is to provide a welding material for painted steel plates that does not cause welding defects such as pits or blowholes, has good mechanical strength in welded parts, and can improve the construction efficiency of steel structures. The welding material for painted steel plates according to the present invention is a welding material for painted steel plates used for welding painted steel plates whose surfaces are coated, and includes C: 0.15% by weight or less,
Contains Si: 1.0% by weight or less, Mn: 3.0% by weight or less as basic components, and Ni, Al, etc. as necessary.
In steel containing Co, Zr, W, Mo, Cr, etc., Ti: exceeding 0.05 to 0.3% by weight is added, and Se, Te, Sb
A total of one or more types selected from
It is characterized by containing one or both of 0.005 to 0.1% by weight and S: 0.04 to 0.1% by weight. The welding material for painted steel plates according to the present invention can be used as a coated arc welding rod, a welding wire for submerged arc welding, and is also used for gas shielded arc welding (MIG welding, TIG welding, CO 2 welding, MAG welding, MAG pulse welding). welding, etc.),
It is used as a welding wire in the case of a consumable electrode method, or as a filler wire or filler rod in the case of a non-consumable electrode method. Next, the reason for limiting the chemical composition (% by weight) of the welding material for coated steel sheets according to the present invention will be explained. C: 0.15% by weight or less C is an element necessary to ensure the mechanical strength of the welded part, but if it is contained in a large amount, it deteriorates the corrosion resistance of the welded part, so the content should be 0.15% by weight or less. Si: 1.0% by weight or less Si is an effective element as a deoxidizing agent, and is preferably contained in an amount of 0.2% by weight or more. Also, 0.5
It has the effect of improving arc stability and oxidation resistance when the amount is more than % by weight. However, if it exceeds 1.0% by weight, the toughness deteriorates and high temperature embrittlement occurs, so it is necessary to keep it below 1.0% by weight. Mn: 3.0% by weight or less Mn is an element that is effective as a deoxidizing agent and contributes to improving the strength of the welded part, and is preferably contained in an amount of 0.5% by weight or more.
However, if it exceeds 3.0% by weight, the bead shape deteriorates and corrosion resistance and workability deteriorate, so it is necessary to keep it below 3.0% by weight. The above are the basic elements contained in steel, but there are also other elements that improve strength and toughness.
It is also desirable to contain Ni: 0.5 to 5% by weight, Mo: 0.1 to 1.0% by weight, etc., if necessary. The welding material for painted steel sheets of the present invention contains Ti in addition to the above basic components, and further contains Se,
One or more of Te and Sb and one or both of Sb are contained, and the reason for limiting the range of these components is as follows. Ti: Exceeding 0.05 to 0.3% by weight Ti is an effective element for improving arc stability during welding, reducing the occurrence of spatter, and improving the strength of welded parts. Contain in excess of % by weight. However, if the content exceeds 0.3% by weight, the arc stabilizing effect will be saturated and the mechanical properties of the weld will deteriorate, so the content should be in the range of more than 0.05 to 0.3% by weight. Se, Te, Sb,: 0.005-0.1% by weight S: 0.04-0.1% by weight One or both Se, Te, Sb, and S are elements effective in preventing the generation of pores in welded parts. ，
One or more of Te and Sb and one or both of S are contained. And Se, Te,
When containing one or more types of Sb,
In order to obtain the above effects, the total content should be 0.005% by weight or more, but if it is too large, the welded part will become brittle and the mechanical strength will decrease, and it will also be expensive, so the total content should be 0.1% by weight or less. In addition, when S is included, in order to obtain the above effects,
The content should be 0.04% by weight or more, but if it is too large, the welded part will become brittle and the mechanical strength will decrease, so the content should be 0.1% by weight or less. Examples will be described below. First, welding material with the steel composition shown in the table (diameter 1.2 mm
A welding wire) was manufactured, and the fillet A shown in the attached drawing was welded by pulse MAG welding. The welding conditions at this time were: current 250A, 220 pulses/second,
Shielding gas (80% Ar + 20% CO 2 ), bead length
It was set to 20cm. The painted surfaces 1a and 2a of the painted steel sheets 1 and 2 shown in the figure are coated with an inorganic zinc primer containing 40% zinc powder. Next, each welded part was photographed using X-rays to examine the number of pores, and the same results shown in the table were obtained.
【表】
表に示す結果から明らかなように、Ｓおよび
Se，Te，Sbの１種または２種以上の一方または
両方を適量含有する本発明の塗装鋼板用溶接材料
（溶接ワイヤ）を用いた場合には、溶接部の気孔
数が著しく少ないのに対して、適量範囲外の比較
材の溶接材料（溶接ワイヤ）を用いた場合には、
溶接部の気孔数がかなり多いという結果となつ
た。
以上の説明から明らかなように、この発明によ
る塗装鋼板用溶接材料を使用して塗装鋼板類の溶
接を行つた場合には、溶接部においてピツトやブ
ローホール等の溶接欠陥が著しく小さく、溶接部
の機械的強度が良好であり、溶接部分の塗装を除
去する必要がないため鋼構造物の施工作業能率が
高いなどのすぐれた効果をもたらしうる。[Table] As is clear from the results shown in the table, S and
When the welding material (welding wire) for painted steel sheets of the present invention containing an appropriate amount of one or more of Se, Te, and Sb is used, the number of pores in the weld is significantly small. Therefore, if a welding material (welding wire) of a comparative material outside the appropriate amount range is used,
The result was that the number of pores in the welded part was quite large. As is clear from the above explanation, when painted steel plates are welded using the welding material for painted steel plates according to the present invention, welding defects such as pits and blowholes in the welded area are extremely small, and the welded area is It has good mechanical strength, and since there is no need to remove the paint from welded parts, it can bring about excellent effects such as high construction work efficiency of steel structures.
図面はこの発明の実施例において行つた隅肉溶
接の説明図である。
The drawing is an explanatory diagram of fillet welding performed in an embodiment of the present invention.
Claims (1)
される塗装鋼板用溶接材料であつて、Ｃ：0.15重
量％以下、Si：1.0重量％以下、Mn：3.0重量％
以下を含有する鋼に、Ti：0.05超過〜0.3重量％
を含有させると共に、Se，Te，Sbのうちから選
んだ１種または２種以上を合計で0.005〜0.1重量
％と、Ｓ：0.04〜0.1重量％との一方または両方
を含有させたことを特徴とする塗装鋼板用溶接材
料。1 Welding material for painted steel plates used for welding coated steel plates whose surfaces are coated, C: 0.15% by weight or less, Si: 1.0% by weight or less, Mn: 3.0% by weight
For steel containing the following, Ti: Exceeding 0.05 to 0.3% by weight
and one or more selected from Se, Te, and Sb in a total of 0.005 to 0.1% by weight and S: 0.04 to 0.1% by weight, or both. Welding material for painted steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15513682A JPS5945096A (en) | 1982-09-08 | 1982-09-08 | Welding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15513682A JPS5945096A (en) | 1982-09-08 | 1982-09-08 | Welding material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5945096A JPS5945096A (en) | 1984-03-13 |
| JPH0366997B2 true JPH0366997B2 (en) | 1991-10-21 |
Family
ID=15599336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15513682A Granted JPS5945096A (en) | 1982-09-08 | 1982-09-08 | Welding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5945096A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62248594A (en) * | 1986-04-21 | 1987-10-29 | Daido Steel Co Ltd | Gas shielded arc welding wire |
| JPH0645076B2 (en) * | 1986-09-12 | 1994-06-15 | 大同特殊鋼株式会社 | Gas shield arc welding wire for zinc plated steel plate |
| JPS63194889A (en) * | 1987-02-10 | 1988-08-12 | Daido Steel Co Ltd | Wire for gas shielded arc welding |
| JPS63194890A (en) * | 1987-02-10 | 1988-08-12 | Daido Steel Co Ltd | Wire for gas shielded arc welding |
| JPS63199091A (en) * | 1987-02-12 | 1988-08-17 | Daido Steel Co Ltd | Gas shielded arc welding wire |
| JPS63242488A (en) * | 1987-03-30 | 1988-10-07 | Daido Steel Co Ltd | Gas shielded arc welding wire |
| JP2526172B2 (en) * | 1990-09-28 | 1996-08-21 | 川崎製鉄株式会社 | Gas shield arc welding wire used for lap welding of thin galvanized steel sheets |
| JP4909138B2 (en) * | 2006-12-29 | 2012-04-04 | 株式会社神戸製鋼所 | Solid wire |
| US8461485B2 (en) | 2006-12-29 | 2013-06-11 | Kobe Steel, Ltd. | Solid wire |
| CN103143856B (en) * | 2013-03-25 | 2015-09-16 | 武汉科技大学 | The high intensity levels pipe line steel submerged-arc welding wire of carbon dioxide corrosion-resistant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543144A (en) * | 1977-06-07 | 1979-01-11 | Toa Paint Co Ltd | Nozzle tip for air spray |
| JPS55109592A (en) * | 1979-02-14 | 1980-08-23 | Daido Steel Co Ltd | Steel wire for ar-co2 gas shielded arc welding and welding method |
| JPS5758994A (en) * | 1980-09-25 | 1982-04-09 | Kobe Steel Ltd | Wire for low spatter carbon dioxide gas shielded arc welding |
-
1982
- 1982-09-08 JP JP15513682A patent/JPS5945096A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543144A (en) * | 1977-06-07 | 1979-01-11 | Toa Paint Co Ltd | Nozzle tip for air spray |
| JPS55109592A (en) * | 1979-02-14 | 1980-08-23 | Daido Steel Co Ltd | Steel wire for ar-co2 gas shielded arc welding and welding method |
| JPS5758994A (en) * | 1980-09-25 | 1982-04-09 | Kobe Steel Ltd | Wire for low spatter carbon dioxide gas shielded arc welding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5945096A (en) | 1984-03-13 |
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