JP3538010B2 - Covered arc welding rod for austenitic stainless steel - Google Patents
Covered arc welding rod for austenitic stainless steelInfo
- Publication number
- JP3538010B2 JP3538010B2 JP29175797A JP29175797A JP3538010B2 JP 3538010 B2 JP3538010 B2 JP 3538010B2 JP 29175797 A JP29175797 A JP 29175797A JP 29175797 A JP29175797 A JP 29175797A JP 3538010 B2 JP3538010 B2 JP 3538010B2
- Authority
- JP
- Japan
- Prior art keywords
- welding rod
- coating
- stainless steel
- welding
- austenitic stainless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Nonmetallic Welding Materials (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、化学機器、容器、
プラント等に用いられる耐粒界腐食性が良好な低炭素の
オーステナイト系ステンレス鋼の溶接に用いる被覆アー
ク溶接棒に係わるものである。詳しくは溶着金属が母材
並の低炭素のオーステナイト系ステンレス鋼で、耐粒界
腐食性が優れ、下向、立向等の全姿勢溶接が容易にでき
るとともに、被覆の固着性が良好な被覆ア−ク溶接棒に
関する。The present invention relates to a chemical device, a container,
The present invention relates to a coated arc welding rod used for welding low carbon austenitic stainless steel having good intergranular corrosion resistance used in plants and the like. In detail, the deposited metal is a low-carbon austenitic stainless steel as low as the base metal, has excellent intergranular corrosion resistance, and can be easily welded in all positions, such as downward and vertical, and has good adhesion of the coating. It relates to an arc welding rod.
【0002】[0002]
【従来の技術】ステンレス鋼の中でも低炭素のオーステ
ナイト系ステンレス鋼は、耐粒界腐食性等の耐食性が優
れており、化学プラントや原子力関連施設等に利用され
ている。2. Description of the Related Art Among stainless steels, low-carbon austenitic stainless steels have excellent corrosion resistance such as intergranular corrosion resistance and are used in chemical plants and nuclear facilities.
【0003】この種の被覆ア−ク溶接棒として特公昭5
7−31519号公報に石灰石、蛍石、酸化ジルコニウ
ム、酸化鉄の量および石灰石と蛍石との比を限定する、
また特公平2−42311号公報に、被覆剤として特定
量のTiO2、CaO、弗化物を含有させて、全姿勢溶
接を非常に容易にできるステンレス鋼用被覆アーク溶接
棒が提案されている。しかし、前記技術では、特に溶接
中に被覆が欠け落ち易く、またア−ク安定性、スパッタ
の発生量、スラグ被包性等溶接作業性も十分ではないと
いう課題があった。[0003] This kind of coated arc welding rod is disclosed in
No. 7-31519, the amount of limestone, fluorite, zirconium oxide, iron oxide and the ratio of limestone to fluorite are limited.
Japanese Patent Publication No. 2-42311 proposes a coated arc welding rod for stainless steel which can easily perform all-position welding by containing a specific amount of TiO 2 , CaO, and fluoride as a coating agent. However, the above technique has a problem that the coating tends to chip off during welding, and the welding workability such as arc stability, spatter generation amount, slag encapsulation property is not sufficient.
【0004】[0004]
【発明が解決しようとする課題】本発明は、溶接中の被
覆の欠け落ちを防止し、かつアーク安定性、スパッタの
発生、スラグの被包性等溶接作業性の優れた低炭素オー
ステナイト系ステンレス鋼用被覆ア−ク溶接棒を提供す
ることを目的とする。SUMMARY OF THE INVENTION The present invention provides a low-carbon austenitic stainless steel which prevents chipping of a coating during welding and is excellent in welding workability such as arc stability, generation of spatter, encapsulation of slag, and the like. An object of the present invention is to provide a coated arc welding rod for steel.
【0005】[0005]
【課題を解決するための手段】本発明は、低炭素オース
テナイト系ステンレス鋼用被覆アーク溶接棒の溶接中の
被覆の欠け落ちを防止するため、心線成分および被覆剤
組成を種々検討した。その結果、珪灰石および酸化ジル
コニウムの粒径を細粒とし、かつ添加量を限定すること
によりそれらの相乗効果によって被覆の固着性が向上し
て溶接時の被覆の欠け落ちがなくなり、全姿勢でのビー
ド形状、ア−ク安定性、スパッタ発生量の減少等の溶接
作業性の向上に効果があるとの知見を得た。DISCLOSURE OF THE INVENTION In order to prevent chipping of a coating during welding of a coated arc welding rod for low carbon austenitic stainless steel, the present invention has studied various core components and coating composition. As a result, by reducing the particle size of wollastonite and zirconium oxide, and by limiting the amount of addition, the synergistic effect of them improves the adhesion of the coating and eliminates the chipping of the coating at the time of welding. It has been found that this method is effective in improving the welding workability such as the bead shape, arc stability, and reduction in the amount of spatter generated.
【0006】本発明は、以上の知見を基に構成されたも
のであり、その要旨とするところは、重量%で、Cが
0.02%以下のオーステナイト系ステンレス鋼を心線
とし、その心線の周囲に被覆剤全重量に対して、炭酸カ
ルシウム、マグネサイト、ドロマイト、炭酸バリウム、
炭酸リチウムの1種又は2種以上から選択された炭酸塩
を10〜40%、蛍石を10〜30%、粒径150μm
以下の珪灰石を11〜30%、かつ粒径50μm以下の
酸化ジルコニウムを1〜15%含み、その他スラグ形成
剤として、酸化鉄、アルミナ、ルチール、珪砂、酸化マ
ンガン、酸化カルシウム、及び、水ガラスからのSiO
2、Na2OおよびK2Oの1種または2種以上を11.
5〜19.2%含有し、これらスラグ形成剤の合計が6
5〜95%、金属粉末を5〜35%含有した被覆剤が、
被覆率20〜40%で被覆されていることを特徴とする
オーステナイト系ステンレス鋼用被覆アーク溶接棒。The present invention has been made on the basis of the above findings. The gist of the present invention is that an austenitic stainless steel having a C content of 0.02% or less by weight is used as a core wire. Calcium carbonate, magnesite, dolomite, barium carbonate,
10 to 40% of carbonate selected from one or more of lithium carbonate, 10 to 30% of fluorite, particle size 150 μm
It contains 11 to 30% of the following wollastonite and 1 to 15% of zirconium oxide having a particle size of 50 μm or less, and as other slag forming agents, iron oxide, alumina, rutile, silica sand, manganese oxide, calcium oxide, and water glass SiO from
2 , one or more of Na 2 O and K 2 O ;
5 to 19.2%, and the total of these slag forming agents is 6
A coating agent containing 5-95% and 5-35% of metal powder,
A coated arc welding rod for austenitic stainless steel, which is coated at a coverage of 20 to 40%.
【0007】[0007]
【0008】[0008]
【発明の実施の形態】以下に本発明のオーステナイト系
ステンレス鋼用被覆アーク溶接棒の各種数値の限定理由
を述べる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The reasons for limiting various numerical values of the coated arc welding rod for austenitic stainless steel of the present invention will be described below.
【0009】先ず、本発明の被覆アーク溶接棒に用いる
心線は、溶接の対象となる母材が低炭素量のオーステナ
イト系ステンレス鋼であることから、母材と共金系のオ
ーステナイト系ステンレス鋼であればよいが、心線中の
炭素量については、被覆剤中から付加される分を考慮し
て、溶着金属の炭素量を0.040%以下にするため、
その上限値は多くとも0.02%にしなければならな
い。First, the core wire used for the coated arc welding rod of the present invention is made of austenitic stainless steel having a low carbon content because the base metal to be welded is austenitic stainless steel having a low carbon content. However, the carbon amount in the core wire is set to 0.040% or less in consideration of the amount added from the coating agent in order to reduce the carbon amount of the deposited metal to 0.040% or less.
Its upper limit must be at most 0.02%.
【0010】また、オーステナイト系ステンレス鋼心線
のC以外の組成は重量%で、Cr;16〜25%、N
i;8〜16%、Mo;4%以下、Mn;0.5〜2.
5%、Si;0.1〜0.6%、P;0.03%以下、
S;0.03%以下、Al;0.05%以下、Ti;
0.05%以下、N;0.1%以下を含有し、残部がF
eおよび不可避的不純物からなるものが好ましい。[0010] The composition other than C of the austenitic stainless steel core wire is expressed in terms of% by weight;
i: 8 to 16%, Mo: 4% or less, Mn: 0.5 to 2.
5%, Si: 0.1 to 0.6%, P: 0.03% or less,
S: 0.03% or less, Al: 0.05% or less, Ti;
0.05% or less, N; 0.1% or less, the balance being F
Those comprising e and unavoidable impurities are preferred.
【0011】次に被覆剤中に添加する成分は、炭酸塩と
して、炭酸カルシウム、マグネサイト、ドロマイト、炭
酸バリウム、炭酸リチウム等があり、これらの成分はア
−ク安定性、吹付けを良くする目的で添加する。10%
未満であるとその効果を十分に得ることができない。4
0%を超えて添加するとスパッタが多く、スラグの被包
性が劣化する。従って炭酸塩の1種または2種以上の合
計は10〜40%にする必要がある。The components added to the coating agent include calcium carbonate, magnesite, dolomite, barium carbonate, lithium carbonate, etc. as carbonates, and these components improve arc stability and spraying. Add for purpose. 10%
If it is less than that, the effect cannot be sufficiently obtained. 4
If it is added in excess of 0%, the amount of spatter increases, and the encapsulation of the slag deteriorates. Therefore, the total of one or more carbonates needs to be 10 to 40%.
【0012】蛍石は、スラグの流動性、ア−ク安定性を
良好にする目的で添加するが10%未満であるとその効
果を十分に得ることができない。30%を超えて添加す
るとスパッタ発生量が多くなる。従って蛍石は10〜3
0%にする必要がある。Fluorite is added for the purpose of improving the fluidity and arc stability of slag, but if it is less than 10%, its effect cannot be sufficiently obtained. If added in excess of 30%, the amount of spatter generated will increase. Therefore fluorite is 10-3
Must be 0%.
【0013】珪灰石は、被覆の固着性を良好とし、スラ
グの流動性を良くし、立向姿勢での平滑なビード形状を
得る目的で添加するが、11%未満であるとその効果を
十分に得ることができない。30%を超えて添加すると
スラグの流動性が大きくなりすぎ、下向姿勢でのビード
形状が凸型となる。従って珪灰石は11〜30%にしな
ければならないが、11〜26%が好ましい。[0013] Wollastonite is added for the purpose of improving the adhesion of the coating, improving the fluidity of the slag, and obtaining a smooth bead shape in the upright posture. Can not get to. If the addition exceeds 30%, the fluidity of the slag becomes too large, and the bead shape in the downward position becomes convex. Therefore, wollastonite must be 11 to 30%, but 11 to 26% is preferable.
【0014】酸化ジルコニウムは、被覆の固着性を良好
とし、ア−ク安定性を良くし、被包性の良いスラグを形
成する目的で添加するが、1%未満であるとその効果を
十分に得ることができない。15%を超えて添加すると
スパッタが多発する。従って酸化ジルコニウムは1〜1
5%にしなければならないが、4〜10%が好ましい。Zirconium oxide is added for the purpose of improving the fixation of the coating, improving the arc stability, and forming a slag having good encapsulation properties. I can't get it. If added in excess of 15%, spattering occurs frequently. Therefore, zirconium oxide is 1-1.
It must be 5%, but preferably 4-10%.
【0015】さらに珪灰石および酸化ジルコニウムの粒
径は溶接中の被覆の欠け落ち発生に大きく影響するが、
珪灰石の粒径が150μmを超えると、または酸化ジル
コニウムの粒径が50μmを超えると、溶接棒の焼成及
び乾燥の際に被覆に微小な割れが生じ、溶接中に被覆の
欠け落ちが発生する。従って珪灰石および酸化ジルコニ
ウムの粒度はそれぞれ150μm以下、50μm以下に
しなければならない。[0015] Further, the particle size of wollastonite and zirconium oxide greatly affects the occurrence of chipping of the coating during welding.
If the particle size of wollastonite exceeds 150 μm, or if the particle size of zirconium oxide exceeds 50 μm, the coating will have small cracks during firing and drying of the welding rod and chipping of the coating will occur during welding. . Therefore, the particle size of wollastonite and zirconium oxide must be 150 μm or less and 50 μm or less, respectively.
【0016】炭酸塩、蛍石、珪灰石および酸化ジルコニ
ウム以外のスラグ形成剤としては、通常含有されている
酸化鉄、アルミナ、ルチール、珪砂、酸化マンガン、酸
化カルシウム、水ガラスからのSiO2、Na2Oおよび
K2O等があり、これらの成分はア−ク安定性、スラグ
の流動性等溶接作業性目的の必要に応じて、1種または
2種以上を11.5〜19.2%添加する。上記炭酸
塩、蛍石、珪灰石および酸化ジルコニウムを含むスラグ
形成剤の合計が65%未満であるとア−クが不安定とな
る。逆に95%を超えて添加すると、保護筒が深くなり
すぎアークの持続性が悪く、ア−クが不安定となる。従
って、スラグ形成剤の合計は65〜95%に調整しなけ
ればならない。Slag forming agents other than carbonate, fluorite, wollastonite and zirconium oxide include iron oxide, alumina, rutile, silica sand, manganese oxide, calcium oxide, SiO 2 and Na from water glass which are usually contained. There are 2 O and K 2 O. These components may be used alone or in combination of two or more of 11.5 to 19.2% as necessary for the purpose of welding workability such as arc stability and slag fluidity. Added. If the total amount of the slag forming agent containing the carbonate, fluorite, wollastonite and zirconium oxide is less than 65%, the arc becomes unstable. Conversely, if the addition exceeds 95%, the protection cylinder becomes too deep, the arc persistence is poor, and the arc becomes unstable. Therefore, the total slag forming agent must be adjusted to 65-95%.
【0017】金属粉末はTi、Al、Cr、Ni、M
n、Fe−Al、Fe−Si、Fe−Mo等があり、主
として脱酸剤、合金剤、および溶接作業性向上を目的と
して1種以上添加でき、これらの効果は5%以上で現れ
る。35%を超えて添加すると耐棒焼け性が劣化する。
従って金属粉末は5〜35%にしなければならない。The metal powder is Ti, Al, Cr, Ni, M
There are n, Fe-Al, Fe-Si, Fe-Mo, etc., and one or more of them can be added mainly for the purpose of improving the deoxidizing agent, the alloying agent, and the welding workability, and these effects appear at 5% or more. If it is added in excess of 35%, the burn resistance to sticks deteriorates.
Therefore, the metal powder must be 5 to 35%.
【0018】本発明は上記構成からなる被覆剤で、溶着
金属のC量が0.04%以下で、溶接作業性の諸性能を
確保するために、被覆率(溶接棒全重量に対しての被覆
剤重量)を20〜40%にしなければならない。The present invention relates to a coating agent having the above structure, wherein the C content of the deposited metal is 0.04% or less, and the coating ratio (based on the total weight of the welding rod) is assured in order to secure various performances of welding workability. Coating weight) should be 20-40%.
【0019】また、被覆アーク溶接棒の製造方法につい
て言及すると、心線と配合・混合した被覆剤を準備して
から被覆剤に固着剤(珪酸カリおよび珪酸ソーダの水溶
液)を添加しながら湿式混合を行い、心線周囲に被覆剤
を塗装し、さらに塗装後150〜400℃で約1〜3時
間の乾燥・焼成を行うことにより製造することができ
る。In addition, referring to a method of manufacturing a coated arc welding rod, a coating agent mixed and mixed with a core wire is prepared, and then wet-mixed while adding a fixing agent (aqueous solution of potassium silicate and sodium silicate) to the coating agent. , A coating agent is coated around the core wire, and after coating, drying and baking are performed at 150 to 400 ° C. for about 1 to 3 hours.
【0020】[0020]
【実施例】表1に供試心線の化学成分を示す。また表
2、表3に供試心線と被覆剤の組合わせによる被覆アー
ク溶接棒の組成を示す。EXAMPLES Table 1 shows the chemical components of the test core wire. Tables 2 and 3 show the compositions of the coated arc welding rods obtained by combining the test core wire and the coating agent.
【0021】[0021]
【表1】 [Table 1]
【0022】[0022]
【表2】 [Table 2]
【0023】[0023]
【表3】
溶接方法は、棒径4.0mmの溶接棒で、SUS304
板厚6mmを母材として用い、溶接電流100〜140
A、アーク電圧21〜25V、溶接速度50〜250m
m/minとし、溶接作業性試験を下向ビードオンプレ
ート溶接、すみ肉の立向上進溶接で実施した。被覆の欠
け落ち回数は、下向ビードオンプレート溶接で、溶接棒
1本で被覆の欠け落ちる回数を計測し、10回繰り返し
の平均値で示した。それらの試験結果を表4、5に示
す。表中、溶接棒記号No.1〜10が本発明例、溶接
棒記号No.11〜20が比較例である。[Table 3] The welding method was a SUS304 welding rod with a rod diameter of 4.0 mm.
Using a plate thickness of 6 mm as a base material and a welding current of 100 to 140
A, arc voltage 21-25V, welding speed 50-250m
m / min, and the welding workability test was carried out by downward bead-on-plate welding and fillet upright advance welding. The number of chippings of the coating was obtained by measuring the number of chippings of the coating with one welding rod in downward bead-on-plate welding, and was represented by an average value of 10 repetitions. Tables 4 and 5 show the test results. In the table, welding rod symbol No. 1 to 10 are examples of the present invention; 11 to 20 are comparative examples.
【0024】[0024]
【表4】 [Table 4]
【0025】[0025]
【表5】
本発明例であるNo.1〜10は、心線のC量、被覆剤
の炭酸塩量、蛍石量、珪灰石量および粒径、酸化ジルコ
ニウム量および粒径、スラグ剤の合計量、金属粉末量お
よび被覆率が適正であるので、被覆の欠け落ちがなく、
下向および立向姿勢溶接ともに溶接作業性が良好で、溶
接金属のC量も低いなど極めて満足な結果であった。[Table 5] No. 1 of the present invention example. 1 to 10 are suitable for the amount of C in the core wire, the amount of carbonate in the coating agent, the amount of fluorite, the amount and particle size of wollastonite, the amount and particle size of zirconium oxide, the total amount of slag, the amount of metal powder and the coverage Therefore, there is no chipping of the coating,
The welding workability was good in both downward and vertical position welding, and the results were extremely satisfactory, such as the C content of the weld metal was low.
【0026】比較例中溶接棒No.11は、心線のC量
および被覆剤の炭酸塩が高いので、溶接金属のC量が高
く、スパッタ発生量が多く、さらにスラグ被包性も不良
であった。In the comparative example, welding rod No. In No. 11, the C content of the core wire and the carbonate of the coating agent were high, so that the C content of the weld metal was high, the amount of spatter generated was large, and the slag encapsulation was poor.
【0027】溶接棒No.12は、被覆剤の炭酸塩が低
く、また蛍石が高いので、アークが不安定で、スパッタ
発生量も多かった。The welding rod No. In No. 12, since the carbonate of the coating agent was low and the fluorite was high, the arc was unstable and the amount of spatter generated was large.
【0028】溶接棒No.13は、被覆剤の蛍石および
珪灰石が低いので、被覆が欠け落ちし、スラグの流動性
が悪くアークが不安定で、ビード形状も不良であった。The welding rod No. Sample No. 13 was low in fluorite and wollastonite as the coating agent, so the coating was chipped off, the fluidity of the slag was poor, the arc was unstable, and the bead shape was also poor.
【0029】溶接棒No.14は、被覆剤の珪灰石が高
く、被覆率が低いので、アークが不安定でスラグの流動
性が大きくなって下向溶接姿勢においてビードが凸状と
なった。The welding rod No. In No. 14, since the wollastonite as the coating agent was high and the coverage was low, the arc was unstable, the fluidity of the slag became large, and the beads became convex in the downward welding position.
【0030】溶接棒No.15は、被覆剤の酸化ジルコ
ニウムおよび被覆率が高いので、アークが不安定でスパ
ッタ発生量も多かった。The welding rod No. In No. 15, since the coating agent had high zirconium oxide and a high coverage, the arc was unstable and the amount of spatter generated was large.
【0031】溶接棒No.16は、被覆剤の酸化ジルコ
ニウムがなく、スラグ形成剤の合計が低く、さらに金属
粉末が高いので、被覆が欠け落ちし、アークが不安定で
スラグ被包性も悪く、さらに棒焼けも生じた。The welding rod No. No. 16 had no coating agent of zirconium oxide, the total amount of the slag forming agent was low, and the metal powder was high, so that the coating was chipped, the arc was unstable, the slag encapsulation was poor, and the stick was burned. .
【0032】溶接棒No.17は、被覆剤の金属粉末が
なく、スラグ形成剤の合計が高いので、アークが不安定
であった。The welding rod No. In No. 17, the arc was unstable because there was no metal powder of the coating agent and the total amount of the slag forming agent was high.
【0033】溶接棒No.18は、被覆剤の金属粉末が
高く、スラグ形成剤の合計が低いので、アークが不安定
で、棒焼けも生じた。The welding rod No. In No. 18, since the metal powder of the coating agent was high and the total amount of the slag forming agent was low, the arc was unstable and bar burning also occurred.
【0034】溶接棒No.19は、被覆剤の珪灰石粒径
が、No.20は酸化ジルコニウムの粒径が大きいの
で、いずれも被覆の欠け落ちが生じた。The welding rod No. No. 19, the wollastonite particle size of the coating agent is No. Sample No. 20 had a large particle size of zirconium oxide, and in each case, chipping of the coating occurred.
【0035】[0035]
【発明の効果】以上のように本発明によれば溶接金属が
耐粒界腐食性に優れ、かつ溶接中に被覆の欠け落ちがな
く、全姿勢溶接での溶接作業性に優れる被覆アーク溶接
棒を提供することができ、ステンレス鋼溶接部の品質向
上に貢献するものである。As described above, according to the present invention, a coated arc welding rod which is excellent in intergranular corrosion resistance, has no coating chipping during welding, and has excellent welding workability in all position welding. And contribute to the improvement of the quality of stainless steel welds.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特公 昭57−31518(JP,B2) (58)調査した分野(Int.Cl.7,DB名) B23K 35/365 ──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-B-57-31518 (JP, B2) (58) Fields investigated (Int. Cl. 7 , DB name) B23K 35/365
Claims (1)
テナイト系ステンレス鋼を心線とし、その心線の周囲に
被覆剤全重量に対して、炭酸カルシウム、マグネサイ
ト、ドロマイト、炭酸バリウム、炭酸リチウムの1種又
は2種以上から選択された炭酸塩を10〜40%、蛍石
を10〜30%、粒径150μm以下の珪灰石を11〜
30%、かつ粒径50μm以下の酸化ジルコニウムを1
〜15%含み、その他スラグ形成剤として、酸化鉄、ア
ルミナ、ルチール、珪砂、酸化マンガン、酸化カルシウ
ム、及び、水ガラスからのSiO2、Na2OおよびK2
Oの1種または2種以上を11.5〜19.2%含有
し、これらスラグ形成剤の合計が65〜95%、金属粉
末を5〜35%含有した被覆剤が、被覆率20〜40%
で被覆されていることを特徴とするオーステナイト系ス
テンレス鋼用被覆アーク溶接棒。An austenitic stainless steel having a C content of 0.02% or less by weight as a core wire, and calcium carbonate, magnesite, dolomite, barium carbonate around the core wire with respect to the total weight of the coating agent. 10-40% of a carbonate selected from one or two or more of lithium carbonate, 10-30% of fluorite, 11-11 of wollastonite having a particle size of 150 μm or less.
30% zirconium oxide having a particle size of 50 μm or less
Slag forming agents such as iron oxide, alumina, rutile, silica sand, manganese oxide, calcium oxide, and SiO 2 , Na 2 O and K 2 from water glass.
Contains 11.5 to 19.2% of one or more kinds of O
The coating agent containing 65 to 95% of the total of these slag forming agents and 5 to 35% of the metal powder has a coating ratio of 20 to 40%.
A coated arc welding rod for austenitic stainless steel, characterized by being coated with:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29175797A JP3538010B2 (en) | 1997-10-09 | 1997-10-09 | Covered arc welding rod for austenitic stainless steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29175797A JP3538010B2 (en) | 1997-10-09 | 1997-10-09 | Covered arc welding rod for austenitic stainless steel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11114693A JPH11114693A (en) | 1999-04-27 |
JP3538010B2 true JP3538010B2 (en) | 2004-06-14 |
Family
ID=17773034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29175797A Expired - Fee Related JP3538010B2 (en) | 1997-10-09 | 1997-10-09 | Covered arc welding rod for austenitic stainless steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3538010B2 (en) |
-
1997
- 1997-10-09 JP JP29175797A patent/JP3538010B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH11114693A (en) | 1999-04-27 |
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