JPH01293991A - Wire for gas shielded arc welding - Google Patents
Wire for gas shielded arc weldingInfo
- Publication number
- JPH01293991A JPH01293991A JP12556588A JP12556588A JPH01293991A JP H01293991 A JPH01293991 A JP H01293991A JP 12556588 A JP12556588 A JP 12556588A JP 12556588 A JP12556588 A JP 12556588A JP H01293991 A JPH01293991 A JP H01293991A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- wire
- spatters
- arc welding
- spatter
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 44
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 7
- 230000003247 decreasing effect Effects 0.000 abstract description 4
- 239000010953 base metal Substances 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- 239000001569 carbon dioxide Substances 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010998 test method Methods 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
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
Description
（産業上の利用分野）
本発明は、ガスシールドアーク溶接、とくに炭酸ガスシ
ールドアーク溶接に利用されるガスシールドアーク溶接
用電極ワイヤの改良に関するものである。
（従来の技術）
カスシールド消耗電極式アーク溶接法は、ソリツドまた
はフラックス入りの電極ワイヤを使用し、電極ワイヤの
周囲からシールドガスを流しつつ自動または半自動溶接
する方法であり、シールドガスとしてはアルゴンガス、
ヘリウムガス、炭酸ガスなどが用いられる。そして、と
りわけ炭酸ガスシールドアーク溶接法は、その高能率作
業性および経済性により、各産業分野で広範囲に利用さ
れている（ガスシールド消耗電極式アーク溶接法につい
ては、例えば、「第３版 鉄鋼便覧■」 昭和５７年５
月３１日 社団法人 日木鉄鋼協会編 第６１５頁〜第
６１８頁に詳細な記載があり、ＪＩＳ Ｚ ３３１
２には炭酸ガスアーク溶接用ワイヤの規格がある。）。
（発明が解決しようとする課題）
しかしながら、ＴＩＧ溶接法等と比較すると、炭酸ガス
シールドアーク溶接法ではスパッタの発生量か多く、溶
接母材および溶接トーチのノズル等に伺看したスパッタ
を除去する必要が生じ、生産性が低下してしまうという
問題点があった。そこで、スパッタ量の低減を目的とし
て溶接電源の特性改善が行なわれてきたが、必ずしも十
分な効果が得られていないという課題があった。
したがって、溶接母材および溶接トーチのノズル等に付
着するスパッタ量の少ない炭酸ガスシールドアーク溶接
用ワイヤの出現が望まれていた。
（発明の目的）
本発明は、ガスシールドアーク溶接においてスパッタ発
生量が少なく、溶接母材および溶接トーチのノズル等に
付着するスパッタ量も少ないガスシールドアーク溶接用
ワイヤを提供することを目的としている。(Industrial Application Field) The present invention relates to improvement of a gas-shielded arc welding electrode wire used for gas-shielded arc welding, particularly carbon dioxide gas-shielded arc welding. (Prior technology) The cass shield consumable electrode arc welding method uses a solid or flux-cored electrode wire and performs automatic or semi-automatic welding while flowing a shielding gas around the electrode wire. Argon is used as the shielding gas. gas,
Helium gas, carbon dioxide gas, etc. are used. In particular, the carbon dioxide gas shielded arc welding method is widely used in various industrial fields due to its high efficiency and economy. Handbook ■” May 1980
JIS Z 331 Compliant with JIS Z 331, edited by Japan Steel Association, pages 615 to 618
2 has standards for wires for carbon dioxide arc welding. ). (Problem to be Solved by the Invention) However, compared to TIG welding, etc., carbon dioxide shielded arc welding generates more spatter, and it is difficult to remove spatter from the welding base material and the nozzle of the welding torch. There was a problem in that the necessity arose and productivity decreased. Therefore, attempts have been made to improve the characteristics of welding power sources with the aim of reducing the amount of spatter, but there has been a problem in that sufficient effects have not always been obtained. Therefore, there has been a desire for a wire for carbon dioxide shielded arc welding that reduces the amount of spatter that adheres to the welding base material and the nozzle of the welding torch. (Object of the Invention) An object of the present invention is to provide a wire for gas shielded arc welding that generates less spatter during gas shielded arc welding and that also reduces the amount of spatter that adheres to the welding base material and the nozzle of the welding torch. .
（課題を解決するための手段）
本発明に係るガスシールドアーク溶接用ワイヤは、重量
％で、Ｃ：０．０６％以下、Ｓｉ：１．１〜１．８％、
Ｍｎ：１．１〜２．３％、Ｐ：０．０１５〜０．０３０
％、Ｓ：０．０１５〜０．０３０％、Ｏ：０．０１０％
以下、Ｎ：０．０１０％以下、残部がＦｅおよび不可避
の不純物よりなる組成を有することを特徴としており、
このような組成をもつガスシールドアーク溶接用ワイヤ
の構成を上述した従来の課題を解決するための手段とし
たものである。
本発明に係るガスシールドアーク溶接用ワイヤの合金成
分およびそれらの組成（重量％）を上記のように選択し
た理由は、つぎのとおりである。
Ｃ：０．０６％以下
Ｃの含有量が多くなると溶接金属の靭性が低下し、割れ
を生じやすくなるばかりでなく、スパッタ発生量が増加
するので、Ｃの上限を０．０６％とした。
Ｓｉ：１．１〜１．８％
Ｍｎ：１．１〜２．３％
ＳｉおよびＭｎは脱酸剤であり、不足するとブローホー
ルの発生を招く。しかし、これらの合金元素が多量に含
有されると、溶接金属の硬化を招き、靭性が低下する。
一方、ＳｉおよびＭｎの含有量がそれぞれ１．１％以上
の場合には、スパッタ発生量が従来のガスシールドアー
ク溶接用ワイヤ（ＹＧＷ１２：ＪＩＳ Ｚ ３３１
２−１９８３）の約１／２となるので、ＳｉおよびＭｎ
の下限を１．１％とし、靭性低下防止の面から、それぞ
れの上限を１．８％および２．３％とした。
Ｐ：０．０１５〜０．０３０％
Ｓ：０．０１５〜０．０３０％
ＰおよびＳはいずれも不純物元素であり、溶接金属の高
温割れ原因となるが、本発明者らの広範な実験結果から
、高温割れを生じない範囲内であれば、ＰおよびＳ含有
量が多い程スパッタ発生量が減少することを見い出した
ので、それぞれの下限をスパッタ低減効果の得られる０
、０１５％とし、高温割れ防止の面からそれぞれの上限
を０．０３０％とした。
０：０．０１０％以下
Ｎ：０．０１０％以下
０およびＮはいずれも溶接金属の靭性を低下させるので
、それぞれの上限を０．０１０％とした。
（発明の作用）
本発明に係るガスシールドアーク溶接用ワイヤは、Ｃ含
有量が多くなるとスパッタ発生量が増加することからそ
の上限を０．０６％に規制し、ＳｔおよびＭｎ含有量が
それぞれ１．１％以上の場合にはスパッタ発生量がかな
り少なくなることからそれらの下限をそれぞれ１．１％
とし、ＰおよびＳ含有量が多くなる程スパッタ発生量が
減少することからそれらの下限をそれぞれ０．０１５％
としたので、スパッタ発生量の著しく少ないものとなる
。
（実施例）
実施例１
第１表に示す合金組成のガスシールドアーク溶接用ソリ
ッドワイヤ（直径：１．２ｍｍ）を製造し、第２表に示
す条件で、第１図に示す要領により軟鋼板（厚さ：９ｍ
ｍ）１の上にビードオン溶接し、同じく第１図に示すス
パッタ捕集器２内に落下したスパッタ、溶接母材および
治具に付着したスパッタ、および溶接トーチ３のノズル
およびチップに付着したスパッタを全量採取した。それ
らの合計量を第１表に併せて示す。
また、溶接割れ感受性を評価するため、ＪＩＳＺ ３
１５５−１９７９のＣ形ジク拘束突合わせ溶接割れ試験
方法に準拠し、ルート間隔−１、Ｏｍｍで板厚２．３ｍ
ｍの冷延鋼板を用いて、同じく第２表に示した条件で溶
接を行ない、割れの有無を調査した。その結果を第１表
に併せて示す。
さらにＪＩＳ Ｚ ３３１２−１９８３に準拠して
板厚２０ｍｍの軟鋼板を用いて肉盛溶接を行ない、その
溶接部から採取した試験片を０°Ｃで衝撃試験した。そ
の結果を第１表に併せて示す。
第２表
第１表に示すように、Ｓｌ量が少ない比較例Ｎｏ、
１およびＮｏ、１０はいずれもスパッタ量が多く、また
、Ｓｉ量およびＭｎ量が少なく、Ｐ量およびＳｉも少な
い比較例Ｎｏ、 ２においてもスパッタ量が多いものと
なっていた。さらに、Ｃｉか多く、Ｓｉ量およびＭｎ量
も多く、Ｐ量およびＳ量が多いとともに０量およびＮ量
も多い比較例３は、溶接金属の靭性が低く、割れを生し
ていた。
さらにまた、Ｐ量が多い比較例Ｎｏ、１１では高温割れ
を生じており、靭性も低いものであった。
実施例２
８１表の比較例Ｎｏ、 ｌのワイヤおよび本発明実施
例Ｎ０１６のワイヤを用いて、第３表に示す条件で、第
２図に示す冷延鋼板（厚さ２．３ｍｍ）製部品（ｕ＝１
００ｍｍ、ｄ＝１００ｍｍ）５の水平すみ肉溶接を各々
５００個ずつ行ない、それぞれについて溶接トーチのノ
ズルおよびチップに４−１着したスパッタを採取した。
その結果をｆ５４表に示す。
第３表
第４表
第４表に示すように、本発明実施例Ｎ０９６のワイヤを
用いた場合の平均スパッタ付着量は、比較例Ｎ０９１の
ワイヤを用いた場合の平均スパッタ付着量に比べ、半分
以下と著しく少なくなっていることが認められた。(Means for Solving the Problems) The gas shielded arc welding wire according to the present invention includes, in weight%, C: 0.06% or less, Si: 1.1 to 1.8%,
Mn: 1.1-2.3%, P: 0.015-0.030
%, S: 0.015-0.030%, O: 0.010%
Hereinafter, it is characterized by having a composition of N: 0.010% or less, the balance consisting of Fe and unavoidable impurities,
The structure of the gas-shielded arc welding wire having such a composition is a means for solving the above-mentioned conventional problems. The reason why the alloy components and their compositions (wt%) of the wire for gas shielded arc welding according to the present invention were selected as described above is as follows. C: 0.06% or less If the C content increases, the toughness of the weld metal decreases, making it more likely to crack, as well as increasing the amount of spatter, so the upper limit of C was set to 0.06%. Si: 1.1 to 1.8% Mn: 1.1 to 2.3% Si and Mn are deoxidizers, and their deficiency causes blowholes. However, when these alloying elements are contained in large amounts, the weld metal becomes hardened and its toughness decreases. On the other hand, when the Si and Mn contents are each 1.1% or more, the amount of spatter generated is lower than that of conventional gas shielded arc welding wire (YGW12: JIS Z 331
2-1983), so Si and Mn
The lower limit of C was set at 1.1%, and the upper limits were set at 1.8% and 2.3% in order to prevent a decrease in toughness. P: 0.015-0.030% S: 0.015-0.030% Both P and S are impurity elements and cause hot cracking of weld metal, but the inventors' extensive experimental results Based on this, we found that the higher the P and S contents, the lower the amount of spatter as long as hot cracking does not occur.The lower limit of each was set at 0 to obtain the spatter reduction effect.
, 0.015%, and the upper limit of each was set at 0.030% from the viewpoint of preventing hot cracking. 0: 0.010% or less N: 0.010% or less Since both 0 and N reduce the toughness of the weld metal, the upper limit of each is set to 0.010%. (Function of the Invention) In the gas-shielded arc welding wire according to the present invention, since the amount of spatter generated increases when the C content increases, the upper limit is regulated to 0.06%, and the St and Mn contents are each 1%. .1% or more, the amount of spatter generated will be considerably smaller, so the lower limit is set at 1.1% for each.
Since the amount of spatter generated decreases as the P and S contents increase, the lower limits are set at 0.015% for each.
Therefore, the amount of spatter generated is significantly reduced. (Example) Example 1 Solid wire for gas-shielded arc welding (diameter: 1.2 mm) having the alloy composition shown in Table 1 was produced, and a mild steel plate was manufactured under the conditions shown in Table 2 and according to the procedure shown in Fig. 1. (Thickness: 9m
m) Spatter bead-on welded onto 1 and falling into the spatter collector 2 shown in FIG. 1, spatter attached to the welding base material and jig, and spatter attached to the nozzle and tip of the welding torch 3. The whole amount was collected. Their total amounts are also shown in Table 1. In addition, in order to evaluate weld cracking susceptibility, JISZ 3
155-1979 C type restraint butt weld crack test method, root spacing -1, Omm, plate thickness 2.3m
Welding was performed using a cold-rolled steel plate of 50 m under the same conditions shown in Table 2, and the presence or absence of cracks was investigated. The results are also shown in Table 1. Furthermore, build-up welding was performed using a mild steel plate with a thickness of 20 mm in accordance with JIS Z 3312-1983, and a test piece taken from the welded portion was subjected to an impact test at 0°C. The results are also shown in Table 1. As shown in Table 2 and Table 1, Comparative example No. with a small amount of Sl,
Samples No. 1 and No. 10 all had a large amount of sputtering, and Comparative Example No. 2, which had a small amount of Si and Mn, and a small amount of P and Si, also had a large amount of sputtering. Furthermore, in Comparative Example 3, which had a large amount of Ci, a large amount of Si, and a large amount of Mn, a large amount of P and S, and a large amount of 0 and N, the weld metal had low toughness and cracked. Furthermore, in Comparative Example No. 11, which had a large amount of P, hot cracking occurred and the toughness was low. Example 2 Using the wires of Comparative Examples No. 1 and 1 of Table 81 and the wire of Example No. 016 of the present invention, the cold-rolled steel plate (thickness 2.3 mm) parts shown in FIG. 2 were manufactured under the conditions shown in Table 3. (u=1
00 mm, d=100 mm) 5 horizontal fillet welds were performed, and 4-1 pieces of spatter deposited on the nozzle and tip of the welding torch were collected for each. The results are shown in table f54. Table 3 Table 4 As shown in Table 4, the average amount of sputtering when using the wire of Example No. 096 of the present invention is half that of the average amount of sputtering when using the wire of Comparative Example No. 091. It was observed that the number of cases decreased significantly as shown below.
以上のように、本発明に係るガスシールドアーク溶接用
ワイヤは、重量％で、Ｃ：０．０６％以下、Ｓｉ：１．
１〜１．８％、Ｍｎ：１．１〜２．３％、Ｐ：０．０１
５〜０．０３０％、Ｓ二０．０１５〜０．０３０％、Ｏ
：０．０１０％以下、Ｎ：０．０１０％以下、残部がＦ
ｅおよび不純物よりなる組成を有するものであるから、
ガスシールドアーク溶接においてスパッタ発生量が著し
く少なく、溶接母材および溶接トーチのノズル等に付着
するスパッタ量も著しく少なく、したがって従来のよう
に溶接母材および溶接トーチのノズル等に付着したスパ
ッタを除去する作業を行なう必要がなくなり、生産性を
著しく向上させることが可能になるという著大なる効果
かもたらされる。As described above, the gas-shielded arc welding wire according to the present invention has C: 0.06% or less and Si: 1.0% by weight.
1-1.8%, Mn: 1.1-2.3%, P: 0.01
5-0.030%, S2 0.015-0.030%, O
: 0.010% or less, N: 0.010% or less, the balance is F
Since it has a composition consisting of e and impurities,
The amount of spatter generated in gas shielded arc welding is extremely low, and the amount of spatter that adheres to the welding base material and the nozzle of the welding torch is also extremely low. Therefore, unlike conventional methods, spatter that adheres to the welding base material and the nozzle of the welding torch can be removed. This brings about a significant effect in that it becomes possible to significantly improve productivity.
第１図は実施例１において実施した溶接の要領を示す斜
視図、第２図は実施例２において実施した溶接の要領を
示す斜視図である。
特許出願人 日産自動車株式会社
特許出願人 大同特殊鋼株式会社FIG. 1 is a perspective view showing the procedure for welding carried out in Example 1, and FIG. 2 is a perspective view showing the procedure for welding carried out in Example 2. Patent applicant: Nissan Motor Co., Ltd. Patent applicant: Daido Steel Co., Ltd.
Claims (1)
１．８％、Ｍｎ：１．１〜２．３％、Ｐ：０．０１５〜
０．０３０％、Ｓ：０．０１５〜０．０３０％、Ｏ：０
．０１０％以下、Ｎ：０．０１０％以下、残部がＦｅお
よび不純物より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。(1) In weight%, C: 0.06% or less, Si: 1.1~
1.8%, Mn: 1.1-2.3%, P: 0.015-
0.030%, S: 0.015-0.030%, O: 0
．． A wire for gas shielded arc welding, characterized in that N: 0.010% or less, N: 0.010% or less, and the balance consists of Fe and impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63125565A JP2605800B2 (en) | 1988-05-23 | 1988-05-23 | Gas shielded arc welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63125565A JP2605800B2 (en) | 1988-05-23 | 1988-05-23 | Gas shielded arc welding wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01293991A true JPH01293991A (en) | 1989-11-27 |
| JP2605800B2 JP2605800B2 (en) | 1997-04-30 |
Family
ID=14913339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63125565A Expired - Fee Related JP2605800B2 (en) | 1988-05-23 | 1988-05-23 | Gas shielded arc welding wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2605800B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0352795A (en) * | 1989-07-20 | 1991-03-06 | Daido Steel Co Ltd | Wire for gas shielded arc welding and gas shielded arc welding method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5021952A (en) * | 1973-06-28 | 1975-03-08 | ||
| JPS5219130A (en) * | 1975-08-05 | 1977-02-14 | Sumitomo Metal Ind | Gas shielded arc weld steel wire |
| JPS61165294A (en) * | 1985-01-17 | 1986-07-25 | Nippon Steel Corp | Wire for high-speed gas shielded arc welding |
-
1988
- 1988-05-23 JP JP63125565A patent/JP2605800B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5021952A (en) * | 1973-06-28 | 1975-03-08 | ||
| JPS5219130A (en) * | 1975-08-05 | 1977-02-14 | Sumitomo Metal Ind | Gas shielded arc weld steel wire |
| JPS61165294A (en) * | 1985-01-17 | 1986-07-25 | Nippon Steel Corp | Wire for high-speed gas shielded arc welding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0352795A (en) * | 1989-07-20 | 1991-03-06 | Daido Steel Co Ltd | Wire for gas shielded arc welding and gas shielded arc welding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2605800B2 (en) | 1997-04-30 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |