JPS63119996A - Composite wire for electrogas arc welding - Google Patents
Composite wire for electrogas arc weldingInfo
- Publication number
- JPS63119996A JPS63119996A JP26474686A JP26474686A JPS63119996A JP S63119996 A JPS63119996 A JP S63119996A JP 26474686 A JP26474686 A JP 26474686A JP 26474686 A JP26474686 A JP 26474686A JP S63119996 A JPS63119996 A JP S63119996A
- Authority
- JP
- Japan
- Prior art keywords
- total weight
- welding
- wire
- flux
- 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 71
- 239000002131 composite material Substances 0.000 title claims description 21
- 229910001512 metal fluoride Inorganic materials 0.000 claims abstract description 25
- 230000004907 flux Effects 0.000 claims abstract description 18
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims description 27
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 14
- 239000011800 void material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052681 coesite Inorganic materials 0.000 abstract description 3
- 229910052593 corundum Inorganic materials 0.000 abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 229910052682 stishovite Inorganic materials 0.000 abstract description 3
- 229910052905 tridymite Inorganic materials 0.000 abstract description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 3
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000002893 slag Substances 0.000 description 27
- 230000000694 effects Effects 0.000 description 19
- 239000011324 bead Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002184 metal Substances 0.000 description 13
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- 239000007769 metal material Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010998 test method Methods 0.000 description 3
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Nonmetallic Welding Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、ステンレス鋼のエレクトロガスアーク溶接用
に使用する複合ワイヤに関し、特に溶接作業性が良好で
溶接欠陥を発生しない複合ワイヤに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a composite wire used for electrogas arc welding of stainless steel, and particularly to a composite wire that has good welding workability and does not cause welding defects. .
［従来の技術］
ステンレス鋼殊にオーステナイト系ステンレス鋼の溶接
には、従来被覆アーク溶接、ＭＩＧ溶接、ＴＩＧ溶接、
炭酸ガスアーク溶接等が採用されてきたが、立向溶接を
対象とする場合、これらの溶接方法では著しく能率が劣
るという欠点があった。そこでこれに代る溶接方法とし
てエレクトロガスアーク溶接の適用が検討され始めてい
るが、溶接材料面において未解決の問題が残されている
。即ちエレクトロガスアーク溶接は、軟鋼や低合金鋼を
対象とする溶接において高能率化の実績を示しているが
、軟鋼等とは物理的性質が大きく異なるオーステナイト
系ステンレス鋼の溶接にはそのまま適用することができ
ず、適正な溶接条件の確立と共に良好な溶接部を与える
溶接材料の提供が求められている。[Prior art] Conventional techniques for welding stainless steel, particularly austenitic stainless steel, include coated arc welding, MIG welding, TIG welding,
Carbon dioxide arc welding and the like have been employed, but these welding methods have the disadvantage of being significantly inferior in efficiency when vertical welding is to be performed. Therefore, the application of electrogas arc welding has begun to be considered as an alternative welding method, but unresolved problems remain in terms of welding materials. In other words, although electrogas arc welding has shown a track record of high efficiency when welding mild steel and low-alloy steel, it cannot be applied directly to welding austenitic stainless steel, which has significantly different physical properties from mild steel. Therefore, there is a need for a welding material that can establish appropriate welding conditions and provide a good weld.
［発明が解決しようとする問題点］
そこで上記要請に答え得る様な溶接材料の開発が進めら
れ、例えば特開昭５８−１５１９９３に示される様なオ
ーステナイト系ステンレス鋼用のエレクトロガスアーク
溶接用複合ワイヤが提案されている。しかしながら該先
願ワイヤを使用した場合でも、十分であるとは言えず、
溶接時のアーク安定性が劣る、スラグの剥離性が悪い、
溶接ビートが不均一である、アンダーカットやスラグ巻
込み等の溶接欠陥を生じ易い等の問題点が残されており
、その為溶接終了後の手直し作業が避けられず、工程上
大きな負担となっている。[Problems to be Solved by the Invention] Therefore, the development of welding materials that can meet the above requirements has proceeded, for example, a composite wire for electrogas arc welding for austenitic stainless steel as shown in Japanese Patent Application Laid-Open No. 58-151993. is proposed. However, even when using the wire of the prior application, it cannot be said to be sufficient.
Poor arc stability during welding, poor slag removability,
Problems remain, such as uneven welding beats and the tendency to cause welding defects such as undercuts and slag entrainment.As a result, rework after welding is unavoidable, which places a large burden on the process. ing.
本発明はこうした事情に着−目してなされたものであフ
て、オーステナイト系ステンレス鋼をエレクトロガスア
ーク溶接するに当たり、溶接作業性が優れ、且つ溶接欠
陥の無い溶接部を与える様なエレクトロガスアーク溶接
用複合ワイヤを提供しようとするものである。The present invention has been made in view of these circumstances, and is intended to provide an electrogas arc welding method that has excellent welding workability and provides a welded part without weld defects when performing electrogas arc welding on austenitic stainless steel. The present invention aims to provide a composite wire for use in
〔問題点を解決するための手段］
しかして上記目的を達成した本発明ワイヤは、ステンレ
ス鋼製外皮で囲まれた空隙内に、フラックスを充填して
なるエレクトロガスアーク溶接用複合ワイヤであって、
フラックス中に含まれる非金属物質量をワイヤ総重量に
対して０．４〜１．４％（重量％の意味、以下同じ）と
すると共に、該非金属物質中には非金属物′Ｘ総重量に
対して５ｔ０２：１５〜４０％、ＣａＯ：５〜３０％、
アルカリ金属酸化物：１〜１０％、金属弗化物：３５〜
６０％が夫々含まれ、且つ該金属弗化物のうち金属弗化
物総重量に対して１０〜４０％はＮａＦによって占めら
れるものである点に第１の要旨が存在し、さらに所望に
応じてＡｌ２Ｏ３及び／又はＭｇＯ：１０％以下、Ｔｉ
Ｏ２：１０％以下、Ｂｔ、０３ ：０．５〜５％ノイず
れか１種又は２種以上を前記非金属物質中に加える点に
第２〜第４の発明の要旨が存在する。[Means for Solving the Problems] The wire of the present invention that achieves the above object is a composite wire for electrogas arc welding in which a void surrounded by a stainless steel sheath is filled with flux,
The amount of nonmetallic substances contained in the flux is 0.4 to 1.4% (the meaning of weight%, the same applies hereinafter) based on the total weight of the wire, and the nonmetallic substances 'X total weight are contained in the nonmetallic substances. 5t02: 15-40%, CaO: 5-30%,
Alkali metal oxide: 1 to 10%, metal fluoride: 35 to
The first gist is that NaF accounts for 60% of the total weight of the metal fluorides, and 10 to 40% of the total weight of the metal fluorides is occupied by NaF, and if desired, Al2O3 and/or MgO: 10% or less, Ti
The gist of the second to fourth inventions is that one or more of O2: 10% or less, Bt: 0.5 to 5% Noy, and O3: 0.5 to 5% are added to the nonmetallic substance.
［作用］
ステンレス鋼殊にオーステナイト系ステンレス鋼は、炭
素鋼等に比べて融点が低く、熱伝導性が小さい等の特性
があるため、その溶接部は加熱され易く、又溶接金属は
流動性が過大となり、連続して安定など一ド形成が行な
い難い。又エレクトロガスアーク溶接では溶接姿勢が立
向に限定される為に溶接金属は重力の影響を受は易く、
且つ溶接入熱も増加するので前記傾向が助長される。そ
の為溶接作業性が良好で且つ溶接欠陥の無い溶接金属を
得ようとすれば他の溶接法に適用される溶接材料と比較
して特に溶接中に生成するスラグの量と組成を厳密に選
定する必要がある。[Function] Stainless steel, especially austenitic stainless steel, has characteristics such as a lower melting point and lower thermal conductivity than carbon steel etc., so the welded part is easily heated, and the weld metal has poor fluidity. It becomes too large, and it is difficult to form a single band continuously and stably. In addition, in electrogas arc welding, the welding position is limited to vertical, so the weld metal is easily affected by gravity.
Moreover, since the welding heat input also increases, the above-mentioned tendency is promoted. Therefore, in order to obtain weld metal with good welding workability and no weld defects, the amount and composition of slag generated during welding must be carefully selected compared to welding materials used in other welding methods. There is a need to.
本発明者等は以上の観点からスラグの量や性状を適正に
調整し、さらにアーク安定性についても改善し得る様な
フラックス組成について研究し、前記構成で示される本
発明のエレクトロガスアーク溶接用複合ワイヤを完成す
るに至った。From the above viewpoints, the present inventors have conducted research on a flux composition that can appropriately adjust the amount and properties of slag and further improve arc stability, and have developed a composite for electrogas arc welding of the present invention having the above-mentioned configuration. I have completed the wire.
以下本発明の構成を順を追って説明する。Hereinafter, the configuration of the present invention will be explained in order.
（１）非金属物質：ワイヤ総重量に対して０．４〜１．
４ ％
非金属物質としては、スラグ生成剤として積極的に添加
される物質は勿論のこと、アーク安定剤等の様に別の目
的で添加されても最終的に溶接スラグの供給源となる物
質のすべてが含まれる。即ち外皮中に含まれるフラック
ス成分のうちＦｅや合金元素となるＮＬ、Ｃｒ、Ｍｎ等
の金属粉末を除いた物質の全てがこれに該当する。これ
らの非金属物質は溶接時にスラグとなり、溶接金属を大
気から保護すると共に、溶接時に使用する摺動式銅当金
とビード表面の間の潤滑剤としても作用し銅当金の円滑
な移動を確保する効果があり、その配合量はワイヤ総重
量に対して０．４〜１．４％とする必要がある。配合量
が０．４％未満ではスラグ量が過少となるためその効果
が十分に発揮されず、一方１．４％を超えるとスラグ量
過多の為にアークが不安定となりスパッタ量が増大する
と共にアンダーカットやスラグ巻込み等の溶接欠陥が発
生し易くなる。(1) Non-metallic material: 0.4 to 1.0% based on the total weight of the wire.
4% Non-metallic substances include not only substances that are actively added as slag generating agents, but also substances that are added for other purposes such as arc stabilizers and ultimately serve as a source of welding slag. Includes everything. That is, all the substances included in the flux component contained in the outer skin, excluding Fe and metal powders such as NL, Cr, and Mn, which are alloying elements, fall under this category. These non-metallic substances become slag during welding, and not only protect the weld metal from the atmosphere, but also act as a lubricant between the sliding copper dowel used during welding and the bead surface, ensuring smooth movement of the copper dowel. It has the effect of ensuring that the amount of the compound is 0.4 to 1.4% based on the total weight of the wire. If the blending amount is less than 0.4%, the slag amount will be too small and the effect will not be fully exhibited.On the other hand, if it exceeds 1.4%, the arc will become unstable due to too much slag and the amount of spatter will increase. Welding defects such as undercuts and slag entrainment are more likely to occur.
（２） Ｓ ｉ ０２
スラグの粘性を低下させ、スラグのかぶり状態を均一に
してビードのなじみや光沢を向上させる効果があり、そ
の配合量は非金属物質総重量に対して１５〜４０％とす
る必要がある。配合量が１５％未満ではその効果が不十
分であり、一方４０％を超えるとアンダーカットが発生
する。(2) S i 02 has the effect of reducing the viscosity of slag, making the slag coverage uniform, and improving bead conformability and gloss, and its blending amount is 15 to 40% based on the total weight of nonmetallic substances. There is a need to. If the amount is less than 15%, the effect will be insufficient, while if it exceeds 40%, undercutting will occur.
（３）ＣａＯ
スラグ粘性増加成分でありＳｉｎ、配合量との関係でス
ラグの流動性を適正に調整する機能を発揮すると共に、
特にオーステナイト系ステンレス鋼の溶接においては溶
接ビード外観を安定化させる効果があり、その配合量は
非金属物質総重量に対して５〜３０％とする必要がある
。５％未満では添加効果が不十分であり、一方３０％を
超えるとスラグの流動性が悪化してアーク安定性が著し
く劣化する。(3) CaO is a component that increases slag viscosity, and functions to appropriately adjust the fluidity of slag in relation to the blended amount.
Particularly in welding austenitic stainless steel, it has the effect of stabilizing the appearance of the weld bead, and its content should be 5 to 30% based on the total weight of nonmetallic substances. If it is less than 5%, the effect of addition is insufficient, while if it exceeds 30%, the fluidity of the slag deteriorates and the arc stability deteriorates significantly.
（４）アルカリ金属酸化物
Ｌｉ、Ｏ，Ｎａ、Ｏ，に、Ｏ等があり、いずれもアーク
安定剤として作用する。非金属物質総重量に対して１〜
１０％配合すべきであり、１％未満では添加効果が十分
に発揮されず、一方１０％を超えるとスラグの剥離性を
著しく劣化させる。(4) There are alkali metal oxides such as Li, O, Na, O, and O, all of which act as arc stabilizers. 1 to total weight of nonmetallic substances
It should be added in an amount of 10%; if it is less than 1%, the addition effect will not be sufficiently exhibited, while if it exceeds 10%, the slag releasability will be significantly degraded.
（５）金属弗化物 金属弗化物としてはＬｉＦ、ＮａＦ。(5) Metal fluoride Metal fluorides include LiF and NaF.
ＭｇＦ２．ＣａＦ２．ＡｌＦ３．に２ＳｉＦ６等が例示
され、スラグの塩基度を上昇させ、溶接金属中のｐ、ｓ
等の不純物含有量を低減する効果がある。又エレクトロ
ガスアーク溶接においてはスラグの流動性を確保する上
で不可欠の成分であり、その配合量は非金属物質総重量
に対して３５〜６０％とする必要がある。３５％未満で
はその添加効果が不十分であり、一方６０％を超えると
アークの安定性が低下すると共にアンダーカット等の溶
接欠陥も発生し易くなる。MgF2. CaF2. AlF3. 2SiF6 etc. are exemplified in
It has the effect of reducing the content of impurities such as. Further, in electrogas arc welding, it is an essential component to ensure the fluidity of slag, and its content needs to be 35 to 60% based on the total weight of nonmetallic substances. If it is less than 35%, the effect of its addition is insufficient, while if it exceeds 60%, arc stability decreases and welding defects such as undercuts are likely to occur.
（ｂ）ＮａＦ
金属弗化物のうちＮａＦは、上記金属弗化物としての効
果に加えて特にオーステナイト系ステンレス鋼のエレク
トロガスアーク溶接においては、アーク安定性を改善す
ると共に溶接ビードを平滑にし、またビード外観を安定
化させてビード外観形状を著しく改善する効果がある。(b) NaF Among metal fluorides, NaF, in addition to the above-mentioned effects as a metal fluoride, improves arc stability, smoothes the weld bead, and improves the appearance of the bead, especially in electrogas arc welding of austenitic stainless steel. It has the effect of stabilizing the bead and significantly improving the appearance and shape of the bead.
上記効果を発揮させる為には金属弗化物総重量に対して
１０〜４０％とすべきであり、１０％未満ではその効果
が不十分であり、一方４０％を超えるとスラグの剥離性
が劣化する。In order to exhibit the above effect, the amount of metal fluoride should be 10 to 40% of the total weight; if it is less than 10%, the effect is insufficient, while if it exceeds 40%, the slag removability deteriorates. do.
第１発明に係る複合ワイヤは上記構成を満足するフラッ
クスをステンレス鋼製外皮で囲まれた空隙内に充填して
形成され、叙上の作用効果を発揮する。尚外皮について
は特に制限はなく母材であるオーステナイト系ステンレ
ス鋼と同等の機械的性質等を持つ溶接金属を得ることが
できれば、その材質はオーステナイト系ステンレス鋼ば
かりではなく、フェライト系およびマルテンサイト系ス
テンレス鋼でも良い。The composite wire according to the first invention is formed by filling a void surrounded by a stainless steel outer sheath with a flux that satisfies the above configuration, and exhibits the above-mentioned effects. There are no particular restrictions on the outer skin, and as long as it is possible to obtain a weld metal with mechanical properties equivalent to those of the base metal, austenitic stainless steel, the material may be not only austenitic stainless steel, but also ferritic and martensitic stainless steel. Stainless steel may also be used.
一方上記本発明複合ワイヤの性能を一層改善する為には
、上記の如く規定される非金属物質中に更に下記の成分
を夫々配合することが有効である。On the other hand, in order to further improve the performance of the composite wire of the present invention, it is effective to further incorporate the following components into the nonmetallic substance defined above.
（７） Ａｔ ２０３及び／又はＭｇ０Ａ１２０３及び
ＭｇＯはスラグの粘性を増大させ、アンダーカットの発
生を防止する効果があり、いずれか一方又は両方を非金
属物質総重量に対して１０％以下の範囲で配合すると欠
陥の発生を一層低減することができる。尚配合量が１０
％を超えるとスラグの剥離性が劣化しスラグの焼付きが
発生する。(7) At 203 and/or Mg0A1203 and MgO have the effect of increasing the viscosity of the slag and preventing the occurrence of undercuts, and one or both of them can be used in an amount of 10% or less based on the total weight of nonmetallic substances. When blended, the occurrence of defects can be further reduced. In addition, the blending amount is 10
%, the slag releasability deteriorates and slag seizure occurs.
（８） Ｔ ｉ Ｏ２
ＴｉＯ２を非金属物質総重量に対して１０％以下の範囲
で配合するとスラグの剥離性を一層改善することができ
る。尚配合量が１０％を超えるとアークの安定性が悪化
する。(8) T i O2 When TiO2 is blended in an amount of 10% or less based on the total weight of nonmetallic substances, the slag releasability can be further improved. Incidentally, if the blending amount exceeds 10%, the stability of the arc deteriorates.
（９） Ｂ ｉ ２０ｓ
アーク安定性を損なうことなくスラグの剥離性を改良す
る効果があり、複合ワイヤの性能を一層改善する為には
非金属物質総重量に対して０．５〜５％配合する必要が
ある。配合量が０．５％未満では添加効果が十分に発揮
されず、一方５％を超えると溶接金属の耐割れ性が劣化
する。(9) B i 20s It has the effect of improving slag peelability without impairing arc stability, and in order to further improve the performance of composite wire, it should be added in an amount of 0.5 to 5% based on the total weight of nonmetallic substances. There is a need to. If the amount is less than 0.5%, the effect of addition will not be sufficiently exhibited, while if it exceeds 5%, the cracking resistance of the weld metal will deteriorate.
尚上記では第１発明の複合ワイヤに（７）Ａ１□０．及
び／又はＭｇＯ１（８）ＴｉＯ，、（９）Ｂｉ２０．の
各フラックス成分を個々に配合した複合ワイヤがより優
れた性能を発揮することを明らかにしたが、これら各フ
ラックス成分を複合添加すると夫々の効果が相加的乃至
相乗的に発揮され、溶接作業性が一層優れ溶接欠陥の発
生がないエレクトロガスアーク溶接用複合ワイヤを得る
ことかできる。In the above, the composite wire of the first invention has (7) A1□0. and/or MgO1 (8) TiO, (9) Bi20. It was revealed that a composite wire in which each flux component was individually blended exhibited better performance, but when these flux components were added in combination, their effects were additive or synergistic, and the welding work was improved. It is possible to obtain a composite wire for electrogas arc welding which has better properties and is free from welding defects.
［実施例］
ＳＵＳ３０４Ｌｍ製管状さやの中に、ワイヤ総重量に対
して、５．７０％の金属Ｃｒ粉末、２．５％の金属Ｎｉ
粉末、１．０％の金属Ｍｎ粉末及び第１表に示す０．３
〜１．５％の非金属物質の粉末並びに充填する粉末の合
計がワイヤ総重量に対して２５％となるように調整する
ための鉄粉を充填し、３０８Ｌ系溶接金属が得られるよ
うにワイヤの成分調整を行なった。[Example] In a tubular sheath made of SUS304Lm, 5.70% of metal Cr powder and 2.5% of metal Ni were added to the total weight of the wire.
powder, 1.0% metallic Mn powder and 0.3% as shown in Table 1
Fill the wire with ~1.5% of non-metallic powder and iron powder to adjust the total amount of powder to be 25% of the total weight of the wire to obtain 308L weld metal. The ingredients were adjusted.
板厚２０ｍｍｔの５ＵＳ３０４Ｌ母材のエレクトロガス
アーク溶接試験を行なったところ第１表に示す結果が得
られた。開先形状は第１図に示す通りであり、溶接条件
は下記の通りである。尚第１図において１は５ＵＳ３０
４Ｌ母材、２は固定裏当金を示す。When an electrogas arc welding test was conducted on a 5US304L base material with a plate thickness of 20 mm, the results shown in Table 1 were obtained. The groove shape is as shown in FIG. 1, and the welding conditions are as follows. In Figure 1, 1 is 5US30
4L base material, 2 indicates fixed backing metal.
溶接姿勢 ：立向
シールドガス： ＣＯ２３０ｆＬ／ ｍｉｎワイヤエク
ステンション：３５〜４０＋ｎｍ溶接電流 ： ３８
０Ａ （ＤＣＲＰ）溶接電圧 ：３８ｖ
第１表においてワイヤＮｏ、 １〜１２は本発明の実
施例ワイヤであり、溶接作業性、ビード形状、溶接金属
の健全性のいずれも良好であった。Welding posture: Vertical Shield gas: CO230fL/min Wire extension: 35-40+nm Welding current: 38
0A (DCRP) Welding voltage: 38v In Table 1, wires No. 1 to 12 are example wires of the present invention, and all of the welding workability, bead shape, and soundness of the weld metal were good.
これに対して、ワイヤＮｏ、１３は非金属物質量が少な
過ぎてスラグ量が不足したために、ビード形状、外観不
良を起こし、更には溶接がストップしてしまフた。ワイ
ヤＮｏ、１４は非金属物質が多過ぎて、アーク不安定と
なり、更にはアンダーカットが発生した。ワイヤＮｏ、
１５は５ｉ０２が過多で、かつＣａＯが不足するために
、アンダーカットが発生し、更にはビード波が不均一と
なった。ワイヤＮｏ、１６は、アルカリ酸化物が過多で
、かつＡｌ２Ｏ３又はＭｇＯが過多であったために、ス
ラグの剥離不良を生じた。ワイヤＮｏ。On the other hand, wire No. 13 had too little amount of nonmetallic material and insufficient amount of slag, resulting in poor bead shape and appearance, and furthermore, welding stopped. Wire No. 14 contained too much non-metallic material, resulting in arc instability and undercutting. Wire No.
In No. 15, there was too much 5i02 and not enough CaO, so undercuts occurred and bead waves became non-uniform. Wire No. 16 had too much alkali oxide and too much Al2O3 or MgO, so it caused poor slag peeling. Wire no.
１７はＣａＯおよびＴｉＯ２が過多でアーク不安定とな
った。ワイヤＮｏ、１８は、ＳｉＯ２が過少で、かつＢ
ｉ、Ｏ，が過多であったために、ビードのなじみ不良、
更には溶接割れを発生した。ワイヤＮｏ、１９は、金属
弗化物量が過多であったために、アーク不安定となり、
更にはアンダーカットを生じた。ワイヤＮｏ、２０は、
ＮａＦが過多であったためにスラグの剥離不良を生じた
。ワイヤＮｏ、２１は、ＮａＦおよび金属弗化物量が過
少であったために、アークが不安定で、スラグ流動性が
悪くなり、更にはビード形状不良を生じた。No. 17 had too much CaO and TiO2 and the arc became unstable. Wire No. 18 has too little SiO2 and B
Poor bead conformability due to excessive i, O,
Furthermore, weld cracking occurred. Wire No. 19 had an excessive amount of metal fluoride, resulting in unstable arc.
Furthermore, an undercut occurred. Wire No. 20 is
Excessive amount of NaF caused poor peeling of the slag. Wire No. 21 had an insufficient amount of NaF and metal fluoride, resulting in unstable arc, poor slag fluidity, and defective bead shape.
［実施例２］
第２表に示す本発明ワイヤを使用して、第３表に示す５
通りのステンレス鋼板についてエレクトロガスアーク溶
接継手を作製し、継手性能試験を実施した。いずれも鋼
板板厚２０ ｍ＋ｎｔで、開先形状および溶接条件は実
施例１と同様である。[Example 2] Using the wire of the present invention shown in Table 2, the 5 wires shown in Table 3 were
Electrogas arc welded joints were fabricated using standard stainless steel plates, and joint performance tests were conducted. In both cases, the steel plate thickness was 20 m+nt, and the groove shape and welding conditions were the same as in Example 1.
試験結果は第４表に示す通りであるが、本発明ワイヤを
使用したエレクトロガスアーク溶接継手は、いずれもＸ
線性能、機械的性質および耐食性が良好であることが確
認された。The test results are shown in Table 4, and all of the electrogas arc welded joints using the wire of the present invention were
It was confirmed that the wire performance, mechanical properties and corrosion resistance were good.
第 ４ 表
＊ｆ：ＪＩＳ Ｚ３１０６ ステンレス鋼溶接部の
放射線透過試験方法及び透過写真の等級分類方法による
。Table 4 *f: Based on JIS Z3106 radiographic testing method for stainless steel welds and grading method for radiographic photographs.
＊２：ＪＩＳ ２３１２１ 突合せ溶接継手の引張
試験方法による。*2: According to JIS 23121 tensile test method for butt welded joints.
＊３：ＪＩＳ Ｚ３１７２ 溶接材料の切欠き？ｆ
１ｎ試験方法による。*3: JIS Z3172 Notch in welding material? f
Based on the 1n test method.
＊４：ＪＩＳ ２３１２２ 突合せ溶接継手の型曲
げ試験方法による。*4: According to JIS 23122 Bending test method for butt weld joints.
＊５：ＪＩＳ ｚｏｓフ５ ステンレス鋼の硫酸・硫
酸銅腐食試験方法による。*5: According to JIS ZOS F5 stainless steel sulfuric acid/copper sulfate corrosion test method.
［発明の効果］
本発明は以上の様に構成されており、従来ステンレス鋼
のエレクトロガスアーク溶接において大きな問題となっ
ていた溶接作業性不良、ビード形状不良および溶接金属
の健全性不良等の問題を克服することができ、その結果
として溶接後の溶接部の手直し工数を低減乃至皆無とす
ることができた。[Effects of the Invention] The present invention is constructed as described above, and solves problems such as poor welding workability, poor bead shape, and poor soundness of weld metal, which have been major problems in conventional electrogas arc welding of stainless steel. As a result, the number of man-hours for reworking the welded part after welding could be reduced or eliminated.
第１図はエレクトロガスアーク溶接試験における開先形
状を示す断面説明図である。FIG. 1 is an explanatory cross-sectional view showing the groove shape in an electrogas arc welding test.
Claims (4)
クスを充填してなるエレクトロガスアーク溶接用複合ワ
イヤであって、フラックス中に含まれる非金属物質量を
ワイヤ総重量に対して０．４〜１．４％（重量％の意味
、以下同じ）とすると共に、該非金属物質中には非金属
物質総重量に対してＳｉＯ＿２：１５〜４０％、ＣａＯ
：５〜３０％、アルカリ金属酸化物：１〜１０％、金属
弗化物：３５〜６０％が夫々含まれ、且つ該金属弗化物
のうち金属弗化物総重量に対して１０〜４０％はＮａＦ
によって占められるものであることを特徴とするエレク
トロガスアーク溶接用複合ワイヤ。(1) A composite wire for electrogas arc welding in which a void surrounded by a stainless steel sheath is filled with flux, and the amount of nonmetallic substances contained in the flux is 0.4% relative to the total weight of the wire. ~1.4% (meaning of weight %, the same applies hereinafter), and the nonmetallic substance contains SiO_2: 15~40% and CaO_2 based on the total weight of the nonmetallic substance.
: 5 to 30%, alkali metal oxide: 1 to 10%, and metal fluoride: 35 to 60%, and among the metal fluorides, 10 to 40% of the total weight of metal fluorides is NaF.
A composite wire for electrogas arc welding, characterized in that it is dominated by:
クスを充填してなるエレクトロガスアーク溶接用複合ワ
イヤであって、フラックス中に含まれる非金属物質量を
ワイヤ総重量に対して０．４〜１．４％（重量％の意味
、以下同じ）とすると共に、該非金属物質中には非金属
物質総重量に対してＳｉＯ＿２：１５〜４０％、ＣａＯ
：５〜３０％、アルカリ金属酸化物：１〜１０％、金属
弗化物：３５〜６０％、Ａｌ＿２Ｏ＿３及び／又はＭｇ
Ｏ：１０％以下が夫々含まれ、且つ該金属弗化物のうち
金属弗化物総重量に対して１０〜４０％はＮａＦによっ
て占められるものであることを特徴とするエレクトロガ
スアーク溶接用複合ワイヤ。(2) A composite wire for electrogas arc welding in which a void surrounded by a stainless steel outer sheath is filled with flux, the amount of nonmetallic substances contained in the flux being 0.4% relative to the total weight of the wire. ~1.4% (meaning of weight %, the same applies hereinafter), and the nonmetallic substance contains SiO_2: 15~40% and CaO_2 based on the total weight of the nonmetallic substance.
: 5-30%, alkali metal oxide: 1-10%, metal fluoride: 35-60%, Al_2O_3 and/or Mg
A composite wire for electrogas arc welding, characterized in that O: 10% or less is contained, and 10 to 40% of the metal fluoride is occupied by NaF based on the total weight of the metal fluoride.
クスを充填してなるエレクトロガスアーク溶接用複合ワ
イヤであって、フラックス中に含まれる非金属物質量を
ワイヤ総重量に対して０．４〜１．４％（重量％の意味
、以下同じ）とすると共に、該非金属物質中には非金属
物質総重量に対してＳｉＯ＿２：１５〜４０％、ＣａＯ
：５〜３０％、アルカリ金属酸化物：１〜１０％、金属
弗化物：３５〜６０％、ＴｉＯ＿２：１０％以下が夫々
含まれ、且つ該金属弗化物のうち金属弗化物総重量に対
して１０〜４０％はＮａＦによって占められるものであ
ることを特徴とするエレクトロガスアーク溶接用複合ワ
イヤ。(3) A composite wire for electrogas arc welding in which a void surrounded by a stainless steel outer sheath is filled with flux, the amount of nonmetallic substances contained in the flux being 0.4% relative to the total weight of the wire. ~1.4% (meaning of weight %, the same applies hereinafter), and the nonmetallic substance contains SiO_2: 15~40% and CaO_2 based on the total weight of the nonmetallic substance.
: 5 to 30%, alkali metal oxide: 1 to 10%, metal fluoride: 35 to 60%, and TiO_2: 10% or less, and based on the total weight of metal fluoride among the metal fluorides. A composite wire for electrogas arc welding, characterized in that 10 to 40% is occupied by NaF.
クスを充填してなるエレクトロガスアーク溶接用複合ワ
イヤであつて、フラックス中に含まれる非金属物質量を
ワイヤ総重量に対して０．４〜１．４％（重量％の意味
、以下同じ）とすると共に、該非金属物質中には非金属
物質総重量に対してＳｉＯ＿２：１５〜４０％、ＣａＯ
：５〜３０％、アルカリ金属酸化物：１〜１０％、金属
弗化物：３５〜６０％、Ｂｉ＿２Ｏ＿３：０．５〜５％
が夫々含まれ、且つ該金属弗化物のうち金属弗化物総重
量に対して１０〜４０％はＮａＦによって占められるも
のであることを特徴とするエレクトロガスアーク溶接用
複合ワイヤ。(4) A composite wire for electrogas arc welding in which a void surrounded by a stainless steel outer sheath is filled with flux, and the amount of nonmetallic substances contained in the flux is 0.4 based on the total weight of the wire. ~1.4% (meaning of weight %, the same applies hereinafter), and the nonmetallic substance contains SiO_2: 15~40% and CaO_2 based on the total weight of the nonmetallic substance.
: 5-30%, alkali metal oxide: 1-10%, metal fluoride: 35-60%, Bi_2O_3: 0.5-5%
A composite wire for electrogas arc welding, characterized in that the metal fluoride contains NaF in an amount of 10 to 40% based on the total weight of the metal fluoride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26474686A JPS63119996A (en) | 1986-11-06 | 1986-11-06 | Composite wire for electrogas arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26474686A JPS63119996A (en) | 1986-11-06 | 1986-11-06 | Composite wire for electrogas arc welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63119996A true JPS63119996A (en) | 1988-05-24 |
Family
ID=17407603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26474686A Pending JPS63119996A (en) | 1986-11-06 | 1986-11-06 | Composite wire for electrogas arc welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63119996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009291796A (en) * | 2008-06-03 | 2009-12-17 | Kobe Steel Ltd | Flux-cored wire for electrogas arc welding for stainless steel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58100997A (en) * | 1981-12-10 | 1983-06-15 | Kobe Steel Ltd | Flux cored wire for electrogas arc welding |
-
1986
- 1986-11-06 JP JP26474686A patent/JPS63119996A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58100997A (en) * | 1981-12-10 | 1983-06-15 | Kobe Steel Ltd | Flux cored wire for electrogas arc welding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009291796A (en) * | 2008-06-03 | 2009-12-17 | Kobe Steel Ltd | Flux-cored wire for electrogas arc welding for stainless steel |
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