JPH03291192A - Flux cored wire for gas shielded arc welding - Google Patents
Flux cored wire for gas shielded arc weldingInfo
- Publication number
- JPH03291192A JPH03291192A JP8837090A JP8837090A JPH03291192A JP H03291192 A JPH03291192 A JP H03291192A JP 8837090 A JP8837090 A JP 8837090A JP 8837090 A JP8837090 A JP 8837090A JP H03291192 A JPH03291192 A JP H03291192A
- Authority
- JP
- Japan
- Prior art keywords
- flux
- wire
- welding
- amount
- cored wire
- 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 31
- 230000004907 flux Effects 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 7
- 229910001512 metal fluoride Inorganic materials 0.000 claims abstract description 4
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 3
- 229910052710 silicon Inorganic materials 0.000 claims abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract description 19
- 239000002184 metal Substances 0.000 abstract description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 abstract description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 5
- 239000013078 crystal Substances 0.000 abstract description 4
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 239000002893 slag Substances 0.000 description 12
- 239000010936 titanium Substances 0.000 description 7
- 239000011324 bead Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910002551 Fe-Mn Inorganic materials 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910018505 Ni—Mg Inorganic materials 0.000 description 1
- 229910003087 TiOx Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- -1 Zr-5t Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000012634 fragment Substances 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
- 239000004615 ingredient Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002784 sclerotic effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- HLLICFJUWSZHRJ-UHFFFAOYSA-N tioxidazole Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)SC2=C1 HLLICFJUWSZHRJ-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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、溶接作業性が良好で且つ優れた低温靭性の溶
接金属を得ることができるガスシールドアーク溶接用フ
ラックス入り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 flux-cored wire for gas-shielded arc welding, which has good welding workability and can yield a weld metal with excellent low-temperature toughness.
[従来の技術]
チクニヤ系フラックスを充填材として使用し、シールド
ガスとして炭酸ガス、アルゴン、ヘリウム等の単体ある
いは混合ガスを使用するガスシールドアーク溶接用フラ
ックス入りワイヤは、優れたビード外観、形状を与える
と共に溶接作業性。[Conventional technology] Flux-cored wire for gas-shielded arc welding, which uses chikunya-based flux as a filler and a single or mixed gas such as carbon dioxide, argon, or helium as a shielding gas, has an excellent bead appearance and shape. and welding workability.
作業能率の向上が得られるため、軟鋼や50キロ級の高
張力鋼の構造物等の溶接に広く用いられている。Because it improves work efficiency, it is widely used for welding structures made of mild steel and 50 kg class high-strength steel.
〔発明が解決しようとする課題]
しかし、チクニャ系のフラックス入りワイヤの最大の欠
点は、低温靭性が低いことで、厚板の大入熱溶接等への
適用は困難とされていた。[Problems to be Solved by the Invention] However, the biggest drawback of chikuna-based flux-cored wires is that they have low low-temperature toughness, making it difficult to apply them to high heat input welding of thick plates.
また特公昭56−6840号公報として、チクニヤ系フ
ラックスにTi、Bを添加して靭性改善が図られている
が、−45〜−60℃での高靭性が要求される低温用銅
用としては、性能的に不十分である。Furthermore, as disclosed in Japanese Patent Publication No. 56-6840, an attempt is made to improve the toughness by adding Ti and B to Chikunya flux, but this is not suitable for low-temperature copper applications that require high toughness at -45 to -60°C. , performance is insufficient.
一方チクニャ系以外のフラックスを用いて低温靭性を改
善するものとして、例えば特開昭52−116746号
公報があり、良好な低温靭性が得られているが、チクニ
ャ系フラックスを用いたものに比ベビードの外観、形状
が悪く、全姿勢溶接作業性の点で劣り実用化に至ってい
ない。On the other hand, there is a method for improving low-temperature toughness using a flux other than Chikuna-based flux, for example, in JP-A-52-116746, in which good low-temperature toughness is obtained. It has a poor appearance and shape, and is inferior in all-position welding workability, so it has not been put into practical use.
さらにチクニャ系フラックス入りワイヤの特性を維持し
つつ、その欠点である低温靭性を改善する方法としで、
特公昭59−44159号公報において、従来700〜
900ppm程度であった溶接金属中の酸素量をMg、
Ti、Hの複合添加により500ppm以下にすること
によって低温靭性を改善する技術が提案されているが、
−60℃以下での高靭性が要求される低温用鋼の溶接材
料としては、性能的に不十分である。Furthermore, while maintaining the characteristics of Chikunya flux-cored wire, we have developed a method to improve its low-temperature toughness, which is its drawback.
In Japanese Patent Publication No. 59-44159, conventionally 700~
The amount of oxygen in the weld metal, which was about 900 ppm, was reduced to Mg,
A technique has been proposed to improve low-temperature toughness by reducing the amount to 500 ppm or less through the combined addition of Ti and H.
It has insufficient performance as a welding material for low-temperature steel, which requires high toughness at temperatures below -60°C.
本発明は、チクニャ系フラックスの特長である良好な溶
接作業性を確保し、かつ低温靭性をより低温域まで拡大
することを目的としたもので、チクニャ系フラックスの
最大の欠点であった溶接金属中の酸素含有率を大幅に低
減(400ppm以下)し、併せて溶着金属の結晶組織
を微細化することにより、低温靭性を改善して従来ワイ
ヤの欠点を解消し、適用分野を拡大することの出来るフ
ラックス入りワイヤを提供するちのである。The present invention aims to ensure good welding workability, which is a feature of chikuna-based fluxes, and to extend low-temperature toughness to a lower temperature range. By significantly reducing the oxygen content in the wire (400 ppm or less) and at the same time making the crystal structure of the weld metal finer, it improves low-temperature toughness, eliminates the drawbacks of conventional wires, and expands the field of application. We provide the best flux-cored wire possible.
〔課題を解決するための手段]
本発明者らは、チクニャ系フラックス入りワイヤの特長
である溶接作業性を維持して、より低温における靭性改
善を目標に研究を重さねた結果得られたもので、その構
成はW4製外皮にワイヤ全重量に対して下記量の成分を
含有するフラックスを充填してなるところを要旨とする
ものである。[Means for Solving the Problems] The present inventors have obtained the results of repeated research aimed at improving the toughness at lower temperatures while maintaining the welding workability that is a feature of Chikunya flux-cored wire. The gist of the structure is that a W4 outer sheath is filled with flux containing the following amounts of components based on the total weight of the wire.
(1)鋼製外皮にフラックスを充填してなるガスシール
ドアーク溶接用フラックス入りワイヤにおいて、フラッ
クスはワイヤ全重量に対して下記量の成分を含有するこ
とを特徴とするガスシールドアーク溶接用フラックス入
りワイヤである。(1) A flux-cored wire for gas-shielded arc welding in which a steel outer sheath is filled with flux, wherein the flux contains the following amount of components based on the total weight of the wire: It's a wire.
Ti1t: 2.5〜6.5%、金属ぶつ化物;F量
として0.36〜1.5%、 Mn : 1.0〜3
.0%、St:0.2〜1.0%、Mg二 〇、1〜1
.0%、酸化物:Tin□酸化物:Tin部以下
(2)また上記第1項において、Ti、B、AJ2゜Z
rの1種または2種以上を0.2〜0.5%含有してな
るガスシールドアーク溶接用フラックス入りワイヤであ
る。Ti1t: 2.5-6.5%, metal bombide; F amount: 0.36-1.5%, Mn: 1.0-3
.. 0%, St: 0.2-1.0%, Mg20, 1-1
.. 0%, oxide: Tin
This is a flux-cored wire for gas shielded arc welding containing 0.2 to 0.5% of one or more of r.
以下作用とともに本発明で使用する充填フラックスの成
分組成の限定理由を詳細に説明する。Below, the reasons for limiting the component composition of the filling flux used in the present invention will be explained in detail as well as the effects.
まずTiO□は、他のスラグ形成剤にはない優れた被包
性およびはくり性を有する他、アーク安定剤として不可
欠の成分であり、2.5%未満では良好なビード外観、
形状が得られない、一方6.5%を越えるとスラグ生成
量が過剰となり、スラグ巻込みが起こると共に酸性成分
である為に溶接時にスラグとして分離されづらく、溶着
金属中に非金属介在物として残留し易く、溶着金属中の
酸素量を増加し、切り欠き靭性を悪化させる。従って2
.5〜6.5%の範囲とする。 TiOx源としては、
ルチールや合成ルチール、チタンスラグ等が使用される
。First of all, TiO□ has excellent encapsulation and peeling properties not found in other slag forming agents, and is an essential component as an arc stabilizer.
On the other hand, if it exceeds 6.5%, the amount of slag generated will be excessive, slag entrainment will occur, and since it is an acidic component, it will be difficult to separate as slag during welding, and it will form as non-metallic inclusions in the weld metal. It tends to remain, increases the amount of oxygen in the weld metal, and deteriorates notch toughness. Therefore 2
.. The range is 5 to 6.5%. As a TiOx source,
Rutile, synthetic rutile, titanium slag, etc. are used.
金属ふっ化物は、アーク安定性を高めると共に脱水素作
用によって溶着金属の低温靭性を向上させる作用がある
。これらの作用はF量換算で0.36%以上添加するこ
とにより有効に発揮される。しかし1.5%を越えると
、スラグの流動性が過大となりスラグ被包性が悪く、ビ
ード形状が悪化する。従って0.36〜1.5%の範囲
とする。ふり化物としてはNa、に、Li、Mg、Ca
等のアルカリ金属、およびアルカリ土類金属のふつ化物
が一般的に用いられる。Metal fluorides have the effect of increasing arc stability and improving the low-temperature toughness of the weld metal through dehydrogenation. These effects are effectively exhibited by adding 0.36% or more in terms of F amount. However, if it exceeds 1.5%, the fluidity of the slag becomes excessive, resulting in poor slag envelopment and poor bead shape. Therefore, it should be in the range of 0.36 to 1.5%. Examples of fluoride include Na, Li, Mg, and Ca.
Fluorides of alkali metals and alkaline earth metals are commonly used.
Mnは、スラグの流動性をl!l整しビード形状を改善
テると共に溶着金属の脱酸を促進し、かつ溶接継手に適
した強度を与えるために添加される。Mn is the fluidity of the slag. It is added to improve the bead shape, promote deoxidation of weld metal, and provide suitable strength to welded joints.
1.0%未満では必要な強度が得られない、一方3.0
%を超えると1強度は向上するが逆に靭性を劣化させる
。従ってMnの添加量は1.0〜3.0%とする。なお
Mnは、単体で用いられる他、Fe−Mn、Fe−5i
−Mn等の鉄合金の形態で6使用できる。If it is less than 1.0%, the necessary strength cannot be obtained;
If it exceeds 1%, the strength will improve, but the toughness will deteriorate. Therefore, the amount of Mn added is 1.0 to 3.0%. Note that Mn is used alone, as well as in Fe-Mn, Fe-5i
-6 Can be used in the form of iron alloys such as Mn.
Siは有効な脱酸剤であると共に、ビード形状1外観お
よび溶接作業を改善するが、0,2%未満ではこれらの
効果が得られない、しかし l、0%を超えると、溶接
金属中のSiが過剰となって靭性を劣化させるので好ま
しくない、従ってSiは0.2〜1.0%とする。なお
Siは、単体あるいはFe−5i、Fe−3i −Mn
等の鉄合金の形態でも使用できる。Si is an effective deoxidizing agent and improves the appearance of the bead shape and welding work, but if it is less than 0.2%, these effects cannot be obtained; however, if it exceeds 0.0%, it will degrade the Excessive Si is undesirable since it deteriorates toughness, so the content of Si is set at 0.2 to 1.0%. Note that Si is a simple substance or Fe-5i, Fe-3i -Mn
It can also be used in the form of iron alloys such as.
Mgは強力な脱酸剤である。特に溶接金属中の酸素量を
低減するのに最良である。添加量が0.1%未満ではそ
の効果が十分得られず、一方1.0%を超えると溶接作
業性が悪化して、スパッタ発生量が多くなると共に低温
靭性ち劣化させる。従ってMgの適正範囲は0.1〜1
.0%とする0Mgは単体もしくはNi−Mg+ Ca
−Mg、Fe−Mg、Fe−5i −Mg等のMg合金
の形態で添加してもよい。Mg is a strong deoxidizer. In particular, it is best for reducing the amount of oxygen in weld metal. If the amount added is less than 0.1%, the effect will not be sufficiently obtained, while if it exceeds 1.0%, welding workability will deteriorate, the amount of spatter will increase, and low temperature toughness will deteriorate. Therefore, the appropriate range for Mg is 0.1 to 1
.. 0Mg, which is defined as 0%, is a single substance or Ni-Mg+Ca
-Mg, Fe-Mg, Fe-5i-Mg, etc. may be added in the form of Mg alloys.
次にTi、B、Al2.Zrのlf!または2種以上を
0.02〜0.5%添加する理由は、溶接金属の結晶粒
を微細化する作用によって靭性を高める作用がある。T
1およびBの切欠靭性向上効果については、既に種々の
研究が行なわれており、微細な針状フェライト組織の形
成を促進する作用および靭性に悪影響を与える固溶窒素
を固定する作用がある。またAff、Zrも微量添加す
ることにより、TiおよびBの効果をより助長する作用
がある。従ってTi、B、Al2.Zrの1種または2
種以上を0.02〜0.5%の添加範囲とする。002
%未満ではこれらの効果が少なく、逆に0.5%を超え
て添加すると、溶接金属を脆化させ靭性を低下させるの
で好ましくない、尚Ti、B、Aβ。Next, Ti, B, Al2. Zr's lf! Alternatively, the reason for adding 0.02 to 0.5% of two or more types is that it has the effect of improving the toughness by refining the crystal grains of the weld metal. T
Various studies have already been conducted on the notch toughness-improving effects of Nos. 1 and B, and they have the effect of promoting the formation of a fine acicular ferrite structure and fixing solid solution nitrogen that adversely affects toughness. Further, by adding a small amount of Aff and Zr, the effects of Ti and B are further promoted. Therefore, Ti, B, Al2. One or two types of Zr
The addition range is 0.02 to 0.5% for seeds and above. 002
If Ti, B, and Aβ are added in an amount less than 0.5%, these effects will be small, and if added in an amount exceeding 0.5%, the weld metal will become brittle and the toughness will decrease, which is not preferable.
Zrの添加方法としては、単体もしくはFe−Ti1.
Fe−B、Al2−Mg、Fe−Al2.Zr−5t等
の合金類の他、B、Zrについては酸化物の形で添加し
、強膜酸剤により還元することちできる。Zr can be added alone or as Fe-Ti1.
Fe-B, Al2-Mg, Fe-Al2. In addition to alloys such as Zr-5t, B and Zr can be added in the form of oxides and reduced with a sclerotic acid.
更に本発明では、スラグ形成剤として酸化鉄。Further, in the present invention, iron oxide is used as a slag forming agent.
5iCh、AlzOx、 2rOt、 MnO,MgO
,BIOs、 Nano、 KtO等の酸化物を併用す
ることができるが、前記Tie。5iCh, AlzOx, 2rOt, MnO, MgO
, BIOs, Nano, KtO, etc., can be used in combination, but the above Tie.
を含めた酸化物の添加量の総和が8.0%を越えると、
本発明の主旨である溶接金属中の酸素含有率を400p
pm以下にすることができなくなる0本発明は、充填フ
ラックス組成の効果を詳細に検討した結果、成し得た成
果である。If the total amount of oxides added, including oxides, exceeds 8.0%,
The main purpose of the present invention is to reduce the oxygen content in the weld metal to 400p.
The present invention was achieved as a result of detailed study of the effects of the filling flux composition.
酸化物は、スラグ生成量を多くさせると共にスラグ巻き
込みを起こし易くし、がっ溶接金属中の酸素量を増加さ
せるので、8.0%を超えて添加すると本発明の成果を
達成することが出来ない。Since oxides increase the amount of slag produced, make it easier to entrain slag, and increase the amount of oxygen in the weld metal, the results of the present invention cannot be achieved if the oxide is added in an amount exceeding 8.0%. do not have.
本発明で用いられる充填スラックスに要求される組成は
以上の通りであるが、上記の要件を満足し得る範囲で他
の合金元素等を併用することもできる0例えば鉄粉は、
溶着量を多くし高能率化が図られる。また60〜80キ
ロ級の強度を確保するために、Ni、Cu、Cr、Mo
、V等を添加して必要な強度を得ることもできる。The composition required for the filled slack used in the present invention is as described above, but other alloying elements etc. may also be used in combination within the range that can satisfy the above requirements.For example, iron powder,
High efficiency can be achieved by increasing the amount of welding. In addition, in order to ensure strength of 60 to 80 kg class, Ni, Cu, Cr, Mo
, V, etc. can be added to obtain the necessary strength.
鋼製外皮としては、充填加工性の点がら、深絞り性の良
好な冷間圧延鋼材および熱間圧延鋼材が用いられる。ま
た、フラックスの充填率は特に限定されないが、伸線性
を考慮してワイヤ全重量に対して10〜30%の範囲が
最ち適当である。As the steel outer skin, cold-rolled steel and hot-rolled steel with good deep drawability are used from the viewpoint of filling workability. Further, the filling rate of flux is not particularly limited, but in consideration of wire drawability, a range of 10 to 30% based on the total weight of the wire is most appropriate.
尚ワイヤの断面形状には何らの制限6なく、2mmφ以
下の細径の場合は比較的単純な円筒状のものがよく、ま
た2、4〜3.2mmφ程度の大径ワイヤの場合は、鞘
材を内部へ複雑に折り込んだ構造の6のが一般的である
。またシームレスワイヤにおいては、表面にCu等のメ
ツキ処理を施すこと6有効である。There are no restrictions6 on the cross-sectional shape of the wire; in the case of a wire with a small diameter of 2 mmφ or less, a relatively simple cylindrical one is preferable, and in the case of a large diameter wire of about 2.4 to 3.2 mmφ, a wire with a sheath 6, which has a structure in which the material is intricately folded inside, is common. Furthermore, for seamless wires, it is effective to plate the surface with Cu or the like.
更に溶接対象m種は、低温用鋼および高張力鋼が一般的
であるが、用途に応じて低合金鋼や高合金鋼等の溶接に
適用することも可能である。Further, the m-type welding target is generally low-temperature steel and high-strength steel, but it can also be applied to welding low-alloy steel, high-alloy steel, etc. depending on the application.
[実施例]
第1表に試作したワイヤの構成を、また第2表に試験結
果を示す、第1.第2表において、No、 1〜6は比
較例、No、7〜No、 16が本発明になるワイヤの
実施例である。[Example] Table 1 shows the configuration of the prototype wire, and Table 2 shows the test results. In Table 2, Nos. 1 to 6 are comparative examples, and Nos. 7 to 16 are examples of the wire according to the present invention.
いずれち軟鋼外皮を用いて1.2+nmφワイヤに仕上
げたワイヤを使用し、下記の条件で溶接して得た溶着金
属の引張り特性および衝撃特性を調べたところ、第2表
の結果が得られた。Using wires finished to 1.2+nmφ wire using a mild steel outer sheath, the tensile properties and impact properties of the welded metal obtained by welding under the following conditions were investigated, and the results shown in Table 2 were obtained. .
溶接条件
溶 接 電 流:直流逆極性、 270A溶 接
電 圧= 29v
溶 接 速 度:25cm/分
シールドガス:C0□25C/分
ワイヤ突出し長さ:20mm
開 先 形 状;45°V開先
ルートギャップ1.2mm。Welding conditions Welding current: DC reverse polarity, 270A welding
Voltage = 29v Welding speed: 25cm/min Shielding gas: C0□25C/min Wire protrusion length: 20mm Bevel shape: 45°V groove root gap 1.2mm.
裏当材9mm
母 材、板厚20mm、祠質:低温用鋼板J
IS 5LA33B
積 層 法二〇層12バス
尚溶着金属の物性は、板厚方向および開先幅方向の中央
部からとり出した試験片を用いて調査した。Backing material 9mm Base material, plate thickness 20mm, Abrasive quality: Low temperature steel plate J
IS 5LA33B lamination method 20 layers 12 baths The physical properties of the welded metal were investigated using test pieces taken from the center in the plate thickness direction and groove width direction.
第2表の試験結果から明らかな様に、本発明外であるN
o、 1 = No、 5のワイヤは溶着金属の酸素量
が450ppm以上と高く、遷移温度は一45℃程度で
靭性の向上は認められなかった。またNO,6は酸素量
も255ppmと低く、低温靭性ち良11+であるが、
金属ぶつ化物量が本発明外で溶接時にスパック−が多発
すると共にスラグの被包性か悪く、ビードが悪化した、
これに対しNo、 7〜N816の本発明の実施例のワ
イヤは、いずれも遷朴温度が一60℃以下であることか
ら、低温靭性も良好なことが確認できた。As is clear from the test results in Table 2, N
o, 1 = No, 5, the amount of oxygen in the weld metal was as high as 450 ppm or more, the transition temperature was about -45°C, and no improvement in toughness was observed. NO.6 also has a low oxygen content of 255 ppm and low temperature toughness of 11+.
When the amount of metal fragments was outside the scope of the present invention, spacks occurred frequently during welding, the slag encapsulation was poor, and the bead was deteriorated.On the other hand, the wires of Examples No. 7 to N816 of the present invention all had Since the aging temperature was 160°C or less, it was confirmed that the low-temperature toughness was also good.
〔発明の効果1
本発明のフラッリス入りワイヤは以上の様に構成されて
8つ、溶接作業性に優れたチクニャ系フラックスにりワ
イヤで添1′Ir!成分の15合せおよび添加量を規定
するJとヨ、゛上り溶着:歎濱中の酸素含有量を大幅に
低減し、併せて溶着余興の結晶組織を微細化することに
七つ6エ温靭性を改善した6その結果チク丁−ヤ系−7
ラツ、プし←鷺”、’−74“ヤニ7)大患を解消し7
.その用途を大帳に拡大しくするものである。[Effect of the invention 1] The flux-cored wire of the present invention is constructed as described above, and is made of 1'Ir! J and Y, which specify the combination of 15 ingredients and the amount added, ``Upward welding: Significantly reduce the oxygen content in the welding layer, and at the same time refine the crystal structure of the welding entertainment. Improved 6 As a result, Chikucho-Ya system-7
Ratsu, Pushi←Sagi”, '-74 “yani 7) Eliminate major illness 7
.. This will expand its use to large books.
Claims (2)
ドアーク溶接用フラックス入りワイヤにおいて、フラッ
クスはワイヤ全重量に対して下記量の成分を含有するこ
とを特徴とするガスシールドアーク溶接用フラックス入
りワイヤ。 TiO_2:2.5〜6.5% 金属ふっ化物:F量として0.36〜1.5%Mn:1
.0〜3.0% Si:0.2〜1.0% Mg:0.1〜1.0% 酸化物:TiO_2を含めて8.0%以下(1) A flux-cored wire for gas-shielded arc welding in which a steel outer sheath is filled with flux, wherein the flux contains the following amount of components based on the total weight of the wire: wire. TiO_2: 2.5-6.5% Metal fluoride: 0.36-1.5% as F amount Mn: 1
.. 0-3.0% Si: 0.2-1.0% Mg: 0.1-1.0% Oxide: 8.0% or less including TiO_2
.02〜0.5%含有してなる請求項(1)記載のガス
シールドアーク溶接用フラックス入りワイヤ。(2) One or more of Ti, B, Al, and Zr is 0
.. The flux-cored wire for gas shielded arc welding according to claim 1, wherein the flux-cored wire contains 0.02 to 0.5%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8837090A JPH03291192A (en) | 1990-04-04 | 1990-04-04 | Flux cored wire for gas shielded arc welding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8837090A JPH03291192A (en) | 1990-04-04 | 1990-04-04 | Flux cored wire for gas shielded arc welding |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03291192A true JPH03291192A (en) | 1991-12-20 |
Family
ID=13940909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8837090A Pending JPH03291192A (en) | 1990-04-04 | 1990-04-04 | Flux cored wire for gas shielded arc welding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03291192A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06210491A (en) * | 1992-11-16 | 1994-08-02 | Lincoln Electric Co:The | Flux core gas shield electrode |
US6833530B2 (en) | 2001-04-09 | 2004-12-21 | Kiswel, Ltd. | Flux cored wire for gas shielded arc welding |
JP2013018012A (en) * | 2011-07-08 | 2013-01-31 | Nippon Steel & Sumitomo Metal Corp | Flux-cored wire for gas-shielded arc welding of high-tensile steel |
CN107225338A (en) * | 2016-03-25 | 2017-10-03 | 株式会社神户制钢所 | Flux-cored wire for gas-shielded arc welding |
CN109719425A (en) * | 2019-03-11 | 2019-05-07 | 江苏南通瑞舶莱焊业科技有限公司 | A kind of wear-resisting welding wire with flux core |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5944159A (en) * | 1982-09-07 | 1984-03-12 | Nippon Telegr & Teleph Corp <Ntt> | Surge protecting circuit of telephone set |
JPS61147993A (en) * | 1984-12-24 | 1986-07-05 | Nippon Steel Corp | Flux cored wire for gas shielded arc welding |
JPS63273594A (en) * | 1987-04-30 | 1988-11-10 | Nippon Steel Corp | Flux cored wire for gas shielding arc welding |
JPH01284497A (en) * | 1988-01-21 | 1989-11-15 | Nippon Steel Corp | Composite wire for gas shielded arc welding |
-
1990
- 1990-04-04 JP JP8837090A patent/JPH03291192A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5944159A (en) * | 1982-09-07 | 1984-03-12 | Nippon Telegr & Teleph Corp <Ntt> | Surge protecting circuit of telephone set |
JPS61147993A (en) * | 1984-12-24 | 1986-07-05 | Nippon Steel Corp | Flux cored wire for gas shielded arc welding |
JPS63273594A (en) * | 1987-04-30 | 1988-11-10 | Nippon Steel Corp | Flux cored wire for gas shielding arc welding |
JPH01284497A (en) * | 1988-01-21 | 1989-11-15 | Nippon Steel Corp | Composite wire for gas shielded arc welding |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06210491A (en) * | 1992-11-16 | 1994-08-02 | Lincoln Electric Co:The | Flux core gas shield electrode |
US6833530B2 (en) | 2001-04-09 | 2004-12-21 | Kiswel, Ltd. | Flux cored wire for gas shielded arc welding |
JP2013018012A (en) * | 2011-07-08 | 2013-01-31 | Nippon Steel & Sumitomo Metal Corp | Flux-cored wire for gas-shielded arc welding of high-tensile steel |
CN107225338A (en) * | 2016-03-25 | 2017-10-03 | 株式会社神户制钢所 | Flux-cored wire for gas-shielded arc welding |
CN109719425A (en) * | 2019-03-11 | 2019-05-07 | 江苏南通瑞舶莱焊业科技有限公司 | A kind of wear-resisting welding wire with flux core |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR880002508B1 (en) | Flux cored wire for gas shielded arc welding | |
JP5207994B2 (en) | Metal flux cored wire for Ar-CO2 mixed gas shielded arc welding | |
JP4035335B2 (en) | Combined arc and laser welding process | |
JP3377271B2 (en) | Flux-cored wire for gas shielded arc welding | |
US20030015257A1 (en) | Flux cored wire for gas shielded arc welding of high tensile strength steel | |
JP3787104B2 (en) | Flux-cored wire for gas shielded arc welding | |
JP3026899B2 (en) | Low hydrogen coated arc welding rod | |
CN102489901B (en) | Gas protective welding flux cored wire for welding heat resistant steel | |
JPH03291192A (en) | Flux cored wire for gas shielded arc welding | |
JPH04309492A (en) | Flux cored wire for gas shielded arc welding | |
JPH0577086A (en) | Flux cored wire for gas shielded arc welding for 0.5 mo steel, mn-mo steel and mn-mo-ni steel | |
JPS632592A (en) | Flux cored wire for low alloy heat resistant steel welding | |
JP3203527B2 (en) | Flux-cored wire for gas shielded arc welding | |
JPH0475783A (en) | Submerged arc welding method for high nitrogen austenitic stainless steels | |
JPH09262693A (en) | Flux cored wire for arc welding | |
JP3718323B2 (en) | Flux-cored wire for multi-electrode vertical electrogas arc welding for extra heavy steel | |
JPH0994693A (en) | Flux cored wire for gas shielded arc welding | |
JPH05269592A (en) | Flux cored wire for gas shielded arc welding | |
JPH07276088A (en) | Mag welding flux cored wire for low temperature steel | |
JPH03294092A (en) | Flux cored wire electrode for gas shielded arc welding | |
JPH01271098A (en) | Flux cored wire for gas shielded arc welding | |
JP2729529B2 (en) | Composite wire for electrogas arc welding | |
JP2528311B2 (en) | Wire with flux for gas shield welding | |
JPS5942198A (en) | Flux cored wire for self-shielded arc welding | |
KR100347294B1 (en) | Flux cored wire for electro gas arc welding |