JPS63252693A - Flux for submerged arc welding - Google Patents
Flux for submerged arc weldingInfo
- Publication number
- JPS63252693A JPS63252693A JP8582187A JP8582187A JPS63252693A JP S63252693 A JPS63252693 A JP S63252693A JP 8582187 A JP8582187 A JP 8582187A JP 8582187 A JP8582187 A JP 8582187A JP S63252693 A JPS63252693 A JP S63252693A
- Authority
- JP
- Japan
- Prior art keywords
- flux
- surface layer
- softening
- base material
- 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
- 230000004907 flux Effects 0.000 title claims abstract description 64
- 238000003466 welding Methods 0.000 title claims abstract description 28
- 239000002344 surface layer Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 abstract description 16
- 239000002184 metal Substances 0.000 abstract description 16
- 239000002994 raw material Substances 0.000 abstract description 9
- 239000011230 binding agent Substances 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
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract description 2
- 229910052593 corundum Inorganic materials 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 235000019353 potassium silicate Nutrition 0.000 abstract description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 2
- 239000011324 bead Substances 0.000 description 10
- 239000002893 slag Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- -1 Mn01Mg01A 1□0 Chemical compound 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium 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）
本発明は耐火性に優れ、且つ溶接作業性に優れた潜弧溶
接用フラックスに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a flux for latent arc welding that has excellent fire resistance and excellent welding workability.
（従米の技術）
潜弧溶接法ではワイヤと７２ツクスが物理的に完全に分
離して使用される。そのためにワイヤとフラックスの組
み合わせを変えることにより様々な用途に使用すること
ができる０例えば、重量φ程度の細径ワイヤと軽石状の
７″７ツクスを組み合わせることにより１０〜２０ｋＪ
／ａｍの小人熱ですみ肉溶接を行なうことができる。ま
た、４１φ以上の大径ワイヤを多電極化し、耐火性のあ
る焼成型フラックスを組み合わせることにより１００〜
２００ｋＪ／ａｍの大入熱で行なう片面溶接に適用する
こともできる。(Journey's technology) In the submerged arc welding method, the wire and 72x are physically completely separated. Therefore, by changing the combination of wire and flux, it can be used for various purposes. For example, by combining a thin wire with a weight of about φ and a pumice-like 7"
Fillet welding can be performed with /am dwarf heat. In addition, by making the large diameter wire of 41φ or more multi-electrode and combining it with fire-resistant sintered flux, we can
It can also be applied to single-sided welding performed with a large heat input of 200 kJ/am.
また、潜弧溶接ではスラグが溶接金属を覆うために大気
を巻き込むことも少なく、ＮやＯなとの溶接金属中の不
純物を低くすることができるので、溶接金属の機械的性
質、特に衝撃靭性を良好にすることができる。さらに、
スラグはスパッタの飛散を防止し、ビード形状や表面性
状も美麗にすることができる。In addition, in submerged arc welding, slag covers the weld metal, so there is less air involvement, and impurities such as N and O in the weld metal can be lowered, which improves the mechanical properties of the weld metal, especially impact toughness. can be made good. moreover,
The slag prevents spatter from scattering and can improve the bead shape and surface quality.
この上うな潜弧１８接の特性はフラックスの化学的組成
によるところが大きく、その主な成分はＳ ｉ Ｏ２、
Ｍｎ０１Ｍｇ０１Ａ １□０ 、、Ｃａ Ｆ ２などが
あるが、Ｓｉ Ｏ２やＭｎＯなどを多く含むフラックス
は軟化溶融点（本発明では軟化溶融点をフラックスある
いは原材料を細かく粉砕し、５１角に圧縮して固めた後
十分に遅い速度で加熱したときにその高さか１／２なに
った温度を軟化溶融点とした。）が比較的低く、従って
高速溶接やすみ肉溶接等のように比較的小人熱の溶接に
用いられることが多い、しかし、このようなフラックス
を大入熱溶接に用いると７うγクスに耐火性（以後、溶
接入熱に対するフラックスの耐火性を耐久熱性と表す。Moreover, the characteristics of the 18-tangent submerged arc largely depend on the chemical composition of the flux, whose main components are SiO2,
Mn01Mg01A 1□0, CaF2, etc., but the flux containing a large amount of SiO2 and MnO has a softening melting point (in the present invention, the softening melting point is determined by finely pulverizing the flux or raw material, compressing it into 51 square pieces, and solidifying it. The softening melting point is defined as the temperature at which 1/2 of that height is reached when heated at a sufficiently slow rate. However, when such a flux is used for high heat input welding, it has a fire resistance of 7 gamma (hereinafter, the fire resistance of a flux against welding heat input is referred to as durable heat resistance).
）がないためにビードが蛇行したり、溶融スラグや溶融
金属が流れ出したりして美麗なビードを形、我すること
ができない。また、酸性のフラックスは０世が高く、溶
接金属の靭性はあまり高くない。), the bead may meander or molten slag or metal may flow out, making it impossible to form a beautiful bead. Furthermore, acidic flux has a high grade 0, and the toughness of the weld metal is not very high.
また、特公昭５２−・１６１６９号公報ではＭ、Ｏを多
量に添加して大入熱溶接でも美麗なビードを形成できる
ように７ラフクスの耐火性を改善しているが、このフラ
ックスを小人熱に適用するとスラグインクルージシンが
発生しやすくなったり、ビードが凸になったりして良好
な溶接を行なうことはできない。In addition, in Japanese Patent Publication No. 52-16169, the fire resistance of 7-lakux was improved by adding large amounts of M and O so that beautiful beads could be formed even during high-heat-input welding. When applied to heat, slag inclusions tend to occur and the bead becomes convex, making it impossible to perform good welding.
更にＣａ Ｆ ２などのフッ化物を多量に含む高塩基性
のフラックスは溶接金属中のＯｉを低めて、溶接−に属
の機械的性質、特に靭性を良好にする。しかし７ツ化物
は一般的に融点が低く、フラックスの耐久熱性は者しく
劣化するために大入熱溶接に適ＪＤすることは困難にな
る。Furthermore, a highly basic flux containing a large amount of fluoride such as CaF2 lowers the Oi in the weld metal and improves the mechanical properties associated with welding, particularly the toughness. However, heptides generally have a low melting point, and the heat durability of the flux deteriorates significantly, making it difficult to use JD suitable for high heat input welding.
虫ｊこ、特公昭４９−２７４９７号公報等は美麗な裏波
ビードを形成させるために表面に粘結剤をコーティング
した２重構造の７うγクスを開示しているが、表面層は
熱硬化性のり（脂等の軟化溶融点の低い物質を使用して
おり、表面層の方が基材部よりも軟化溶融、αが低く、
且つ裏波ビードを抑ｇｉｌｌするためにフラックスを溶
接入熱によりケーキ状に固化させるものである。Japanese Patent Publication No. 49-27497 discloses a double-structured 7-gamma glue coated with a binder on the surface to form a beautiful Uranami bead, but the surface layer is coated with a binder. Curing glue (uses a substance with a low softening and melting point such as fat, and the surface layer has a lower softening and melting point than the base material, and has a lower α.
In addition, in order to suppress the underwave bead, the flux is solidified into a cake shape by welding heat input.
（発明が解決しようとする問題点）
フラックスの組成の違いによる特徴を生かし、その用途
に適した専用フラックスが数多く生産販売されており、
色々な用途によって使い分けられているが、多種類の７
ラフクスを？？埋することは煩雑であるばかりでなく、
生産も少量多品種となるのでコストも高くなっている。(Problem to be solved by the invention) Taking advantage of the characteristics of different compositions of flux, many special fluxes suitable for the purpose are produced and sold.
Although they are used for various purposes, there are a wide variety of 7 types.
Lafukusu? ? Not only is filling it complicated;
Production is also high because it is produced in small quantities and in a wide variety of products.
また、特に溶接入熱の変化に対しては適当な対策がなく
、小人熱から大入熱溶接まで使用できるような汎用フラ
ックスの開発が望まれている。また、最近、溶接金属に
対する要求性能が厳しくなってきており、溶接金属のＯ
量を低めることができるようなフラックスの＋ｌＩＩ発
ら急がれている。即ち、本発明の目的は、耐久熱性に優
れ、且つ高品質な溶接金属が得られるフラックスを提供
することにある。In addition, there is no suitable countermeasure against changes in welding heat input, and it is desired to develop a general-purpose flux that can be used for welding from dwarf heat to large heat input. In addition, recently, the required performance for weld metal has become stricter, and the O
There is an urgent need for a flux that can reduce the amount of +lII. That is, an object of the present invention is to provide a flux that has excellent heat durability and can yield high-quality weld metal.
（問題点を解決するだめの手段）
本発明の要旨は、フラックス粒子の基材部と表面ｊ−と
の間に化学成分の差があり、且つ表面層の軟化溶融点が
フラックス全体の平均的な軟化溶融、αよりも高いこと
を特徴とする潜弧溶接用フラックスである。(Means for Solving the Problems) The gist of the present invention is that there is a difference in chemical composition between the base material part and the surface j- of the flux particles, and the softening and melting point of the surface layer is equal to the average of the entire flux. It is a flux for submerged arc welding that is characterized by a softening and melting rate higher than α.
（作用）
ビードを形成したり溶接金属の成分を決定したりするの
は溶融スラグ４重量重量ちフラックスが溶けた状態であ
り、一方、耐入熱性は粒状のフッアクス自体に耐入熱性
があれば十分である。したがって、フラックス粒子のま
わりに耐久熱性のある物質をコーティングすればフラッ
クスの耐久熱性が向上する。更に、通常潜弧フラックス
にはＡ ｔ２ｏ 、やＭｇＯといった軟化溶融点の高い
原材料が使用されているので、これらの成分をフラック
ス粒子の外側に分布させれば、従来のフラックスの成分
の構成を変えることなくフラックスに耐久熱性を与える
ことができる
ここで、第１図に示すように基材部とはフラックスの中
心部に位置する部分で、表面層とは基材部を覆っている
表面に近い部分をいう。(Function) It is the molten slag 4 weight that determines the composition of the weld metal and the composition of the weld metal.On the other hand, the heat input resistance is determined by the fact that the granular flux itself has heat input resistance. It is enough. Therefore, by coating the flux particles with a material having durable heat properties, the heat durability of the flux can be improved. Furthermore, since latent arc fluxes usually use raw materials with high softening and melting points such as A t2o and MgO, distributing these components outside the flux particles will change the composition of the components of conventional fluxes. As shown in Figure 1, the base material is the part located in the center of the flux, and the surface layer is the part close to the surface covering the base material. A part.
少なくとも７ラフクスの表面層の軟化溶融点はフラック
ス全体の平均的な軟化溶融点よりも高くなければフラッ
クスに耐入熱性を与えることはできない、また、表面層
の軟化溶融、αが１９００℃以上で、且つフラックス全
体に対し５重量％以上にすれば特に耐入熱性の優れたフ
ラックスにすることができ、好ましい。If the softening and melting point of the surface layer of at least 7 lux is higher than the average softening and melting point of the entire flux, heat input resistance cannot be imparted to the flux. , and if the amount is 5% by weight or more based on the entire flux, the flux can have particularly excellent heat input resistance, which is preferable.
フッ化物は溶接金属中のＯｉを低減させるのに最も有効
な成分であり、Ｆに換算して３重世％以上３０１ｊｉ１
％以下フラックスに含有させることにより溶接金属中の
Ｏｉを低めることができる。また、ＭｇＯとＡｌ２Ｏ３
は優れた耐久熱性をフラックスに付与し、溶融スラグに
も優れた性能を付与することができるので、７ツ化物の
添加に加えて。Fluoride is the most effective component for reducing Oi in weld metal, and in terms of F, it is more than 30% 301ji1
% or less in the flux, Oi in the weld metal can be lowered. Also, MgO and Al2O3
In addition to the addition of heptadide, it can impart excellent thermal durability to the flux and also impart excellent performance to the molten slag.
Ｍ ８０ 、 Ａ Ｉ２０３のどちらか一方あるいは両
方同１時に表面層に含有させることにより、耐久熱性と
溶接作業性に優れたフラックスを製造することができる
ので好ましい。It is preferable to include one or both of M 80 and AI203 in the surface layer at the same time, since it is possible to produce a flux with excellent heat durability and welding workability.
本発明フラックスは５ｉＯｚ、Ｔ ：０２、Ｍｎ０１Ａ
Ｉ ２０ ｉ、ＣａＯ，ＭｇＯ、Ｚ ｒ Ｏ２等の酸
化物、ＣａＣ０，、Ｍ ｇＣＯ３、ＢａＣ０−等の炭酸
塩、ＣａＦ、、ＮａＦ等のフッ化物を単独あるいは複合
して含有する粉状の原材料、並びに７エロシリコン、フ
ェロマンガン、金属マンガン、シリコンマンガン、カル
シウムシリコン、／に属チタン等の脱酸剤を使用して製
造することができる。The flux of the present invention is 5iOz, T:02, Mn01A
Powdered raw materials containing oxides such as I20i, CaO, MgO, ZrO2, carbonates such as CaC0, MgCO3, BaC0-, and fluorides such as CaF, NaF, singly or in combination; It can also be produced using a deoxidizing agent such as 7-erosilicon, ferromanganese, metal manganese, silicon manganese, calcium silicon, and/or titanium.
フラックスは２重構造とすることができ、例えば、上記
の原材料を適宜配合した後一旦溶解し、冷却後適当な粒
度に粉砕するか、あるいは水がラス等の適当な固着材を
使用して造粒、乾燥して基材部を！１！遺し、適当な固
着材を使用して基材部となるフラックスに表面層として
耐久熱性のある原材料をコーティングすればよい。Flux can have a double structure, for example, by mixing the above raw materials appropriately, melting it, cooling it and then crushing it to an appropriate particle size, or by using a suitable fixing material such as water lath. Dry the grains and make the base material! 1! Then, using a suitable adhesive, the flux serving as the base material may be coated with a durable heat-resistant raw material as a surface layer.
（実施例） 第１表に実施例に使用した７ラフクスを示す。(Example) Table 1 shows the 7-lakhs used in the examples.
第１表中の化学成分は表面層と７う２クス全体を別々に
分析して得られた値を示しである。また、７ツ化物はＦ
として、酸化物は代表的な酸化物の形に、炭酸塩中のＣ
Ｏ２はＣＯ□の値に換算して示しである。ＦｌとＦ３は
Ｍ［ＩＯを、Ｆ２はＡ１□Ｏ１を、Ｆ４はＭ ｇｏ 、
Ａ １２０ ｓ両方を表面層に含有したものである。The chemical components in Table 1 are the values obtained by separately analyzing the surface layer and the entire surface layer. Also, the heptadide is F
As, the oxide is in the form of a typical oxide, and C in the carbonate is
O2 is shown converted to the value of CO□. Fl and F3 are M[IO, F2 is A1□O1, F4 is M go ,
The surface layer contains both A 120 s and A 120 s.
また、Ｆ５、Ｆ６、Ｆ７はいずれも７ツ化物を多量に含
んだフラックスで、Ｆ１〜Ｆ４のフラックスは基材側の
７ラフクスを溶解、粉砕した後、Ｆ５〜Ｆ７は水がラス
を使用して造粒した後、１２本１００メツシユに整粒し
、乾燥して表面層となる原材料を水〃ラスを固着剤とし
て基材部表面にコーティングした後、５３０℃で焼成し
て実験に供した。ＦＣｌは通常すみ肉等の小人熱に使用
される溶融型フラックスで、耐入熱性はあまりない、Ｆ
ｅ２はＦ６と同じ組成を有する通常のフラックスである
。Ｆｅ２は７ツ化物を多量に添加したフラックスである
。In addition, F5, F6, and F7 are all fluxes that contain a large amount of heptadide, and the fluxes of F1 to F4 are made by melting and pulverizing the 7 lafx on the base material side, and the fluxes of F5 to F7 are made by using lath with water. After granulation, the raw materials were sized into 12 pieces and 100 meshes, and the raw materials that were dried to form the surface layer were coated on the surface of the base material using water glass as a sticking agent, and then baked at 530°C and used for experiments. . FCl is a molten type flux that is usually used to heat fillets, etc., and does not have much heat input resistance.
e2 is a normal flux with the same composition as F6. Fe2 is a flux to which a large amount of heptadide is added.
これらのフラックスを第２表に示す鋼板上に第３表に示
す潜弧ワイヤと組み合わせて第４表の溶接条件で溶接を
行った。耐入熱性は特にビード形状に顕著に表れるので
、溶接後ビード形状を中心に耐入熱性を判定した。また
、Ｆ４〜ＦＧとＦｅ２は溶接金属中心部より試料を採取
してＯｆｉを測定した。これらの結果をｔｒＳ５表に示
した。These fluxes were combined with the submerged arc wires shown in Table 3 on the steel plates shown in Table 2, and welding was performed under the welding conditions shown in Table 4. Since heat input resistance is particularly noticeable in the bead shape, heat input resistance was determined mainly based on the bead shape after welding. In addition, for F4 to FG and Fe2, samples were taken from the center of the weld metal and Ofi was measured. These results are shown in the trS5 table.
第５表から明らかなように、本発明のフラックスはいず
れも良好なビード形状を示していた。これに対し、比較
例のフラックスはいずれも耐入熱性が劣っていた。As is clear from Table 5, all the fluxes of the present invention exhibited good bead shapes. On the other hand, the fluxes of the comparative examples all had poor heat input resistance.
また、ｌ；’４〜Ｆ６のフラックスを使用した溶接金属
中のＯｉは７）化物の増加に従って低下しており、好ま
しい結果が得られた。Further, the Oi in the weld metal using the flux of 1;'4 to F6 decreased as the 7) compounds increased, and a favorable result was obtained.
ｔｊＳ４ 表
Ｏ非常に良好
○良好
Ｘ不良
（発明の効果）
本発明アップクスではフラックス全体の平均的な軟化溶
融点に比べて表面層の軟化溶融点が高いので、大入熱溶
接においてもフップクスが容易に溶けることがなく、溶
接することができる。一方、小人熱溶接では、一旦溶け
たスラグの軟化溶融、−〜は適当な温度に１４整するこ
とができるので、同一のフラックスにより、小人熱から
大入熱溶接まで行なうことができる。tjS4 Table O Very Good ○ Good It does not melt easily and can be welded. On the other hand, in dwarf heat welding, the softening and melting of the once melted slag can be adjusted to an appropriate temperature, so it is possible to perform dwarf heat welding to large heat input welding using the same flux.
更に、表面層の軟化溶融点と厚みを調整することにより
、フラックスの消費量を必要最少限にすることができる
。Furthermore, by adjusting the softening melting point and thickness of the surface layer, the amount of flux consumed can be minimized.
第１図はブラックス粒子を構成的に表した断面図である
。
１・・・基材部、２・・・表面層。FIG. 1 is a cross-sectional view showing the structure of Brax particles. 1... Base material part, 2... Surface layer.
Claims (3)
分の差があり、且つ表面層の軟化溶融点がフラックス全
体の平均的な軟化溶融点よりも高いことを特徴とする潜
弧溶接用フラックス。(1) A latent arc characterized in that there is a difference in chemical composition between the base material part and the surface layer of the flux particle, and the softening and melting point of the surface layer is higher than the average softening and melting point of the entire flux. Flux for welding.
つ表面層がフラックス全体の５重量％以上である特許請
求の範囲第１項記載の潜弧溶接用フラックス。(2) The flux for submerged arc welding according to claim 1, wherein the surface layer has a softening melting point of 1900° C. or higher, and the surface layer accounts for 5% or more by weight of the entire flux.
算して３〜３０重量％含有し、且つ表面層はＭｇＯ、Ａ
ｌ＿２Ｏ＿３のうち１種または２種からなる特許請求の
範囲第１項または第２項記載の潜弧溶接用フラックス。(3) The base material part contains 3 to 30% by weight of fluoride in terms of F based on the entire flux, and the surface layer contains MgO, A
The flux for submerged arc welding according to claim 1 or 2, comprising one or two of l_2O_3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8582187A JPS63252693A (en) | 1987-04-09 | 1987-04-09 | Flux for submerged arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8582187A JPS63252693A (en) | 1987-04-09 | 1987-04-09 | Flux for submerged arc welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63252693A true JPS63252693A (en) | 1988-10-19 |
Family
ID=13869519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8582187A Pending JPS63252693A (en) | 1987-04-09 | 1987-04-09 | Flux for submerged arc welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63252693A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51119639A (en) * | 1975-04-14 | 1976-10-20 | Nippon Steel Corp | Flux for submerged arc welding |
| JPS51119640A (en) * | 1975-04-14 | 1976-10-20 | Nippon Steel Corp | Flux of low hydrogen content and having high stiffness for use in submerged arc welding |
-
1987
- 1987-04-09 JP JP8582187A patent/JPS63252693A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51119639A (en) * | 1975-04-14 | 1976-10-20 | Nippon Steel Corp | Flux for submerged arc welding |
| JPS51119640A (en) * | 1975-04-14 | 1976-10-20 | Nippon Steel Corp | Flux of low hydrogen content and having high stiffness for use in submerged arc welding |
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