JP2633755B2 - Cr containing arc welding rod - Google Patents
Cr containing arc welding rodInfo
- Publication number
- JP2633755B2 JP2633755B2 JP3272731A JP27273191A JP2633755B2 JP 2633755 B2 JP2633755 B2 JP 2633755B2 JP 3272731 A JP3272731 A JP 3272731A JP 27273191 A JP27273191 A JP 27273191A JP 2633755 B2 JP2633755 B2 JP 2633755B2
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- Prior art keywords
- welding rod
- core wire
- welding
- deposited metal
- stainless steel
- Prior art date
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Description
【０００１】[0001]
【産業上の利用分野】本発明は石油精製工業，化学工業
の諸設備などに用いるＳＵＳ４０３，４１０，４１０Ｓ
のマルテンサイト系ステンレス鋼及びＳＵＳ４０５，４
３０，４３４のフェライト系ステンレス鋼、これらのク
ラッド鋼の溶接や炭素鋼上の肉盛溶接に使用する含Ｃｒ
被覆アーク溶接棒に係り、さらに詳しくは、高温強度な
どの優れた溶着金属特性を有する含Ｃｒ被覆アーク溶接
棒に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to SUS403, 410, 410S used for various equipments of petroleum refining industry and chemical industry.
Martensitic stainless steel and SUS405,4
30,434 ferritic stainless steel, Cr-containing used for welding these clad steels and overlay welding on carbon steel
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coated arc welding rod, and more particularly, to a Cr-containing arc welding rod having excellent deposited metal properties such as high-temperature strength.
【０００２】[0002]
【従来の技術】Ｃｒ系ステンレス鋼はＮｉを嫌う環境や
応力腐食割れが発生し易い腐食環境で使用する機器など
に使用されているが、高温強度などの優れた耐熱性を要
求されることが多い。このようなＣｒ系ステンレス鋼は
Ｃｒ−Ｎｉ系ステンレス鋼と比べて溶接性が悪いため、
これら鋼種に適用する溶接材料としては、マルテンサイ
トの析出を抑制し、フェライト結晶粒を微細化するため
に、Ｎｂ，Ｔｉ，Ａｌ入りのＣｒ系溶接棒を用いること
が多い。2. Description of the Related Art Cr-based stainless steel is used for equipment used in an environment that dislikes Ni or in a corrosive environment where stress corrosion cracking is likely to occur, but it is required to have excellent heat resistance such as high-temperature strength. Many. Since such Cr-based stainless steel has poor weldability compared to Cr-Ni-based stainless steel,
As a welding material applied to these steel types, a Cr-based welding rod containing Nb, Ti, and Al is often used in order to suppress precipitation of martensite and refine ferrite crystal grains.
【０００３】しかしながら、従来のＮｂ，Ｔｉ，Ａｌ入
りのＣｒ系溶接棒では高温環境における十分な溶着金属
の強度が得られないという問題があった。However, the conventional Cr-based welding rod containing Nb, Ti, and Al has a problem that sufficient strength of the deposited metal in a high-temperature environment cannot be obtained.
【０００４】この種の溶接棒としては、特公昭４９−６
７４８号公報の「１３Ｃｒ系ステンレス鋼溶接棒」や特
公平３−２５９６号公報の「肉盛溶接用クロム系ステン
レス被覆アーク溶接棒」などが知られているものの、こ
れらに開示されている知見では、高温環境下で高強度の
溶着金属を有する被覆アーク溶接棒は得られない。As this type of welding rod, Japanese Patent Publication No. 49-6 / 1976 is known.
No. 748, "13Cr stainless steel welding rod" and Japanese Patent Publication No. 3-2596, "Chromium stainless steel coated arc welding rod for overlay welding" are known. In addition, a coated arc welding rod having a high-strength deposited metal in a high-temperature environment cannot be obtained.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、Ｎｂ，Ｔ
ｉ，Ａｌ入りＣｒ系ステンレス被覆アーク溶接棒におい
て、高温強度が高い溶着金属を有し、しかも延性、靭
性、耐割れ性などの溶着金属性能にも優れ、かつ良好な
溶接作業性を有することを目的としたものである。SUMMARY OF THE INVENTION The present invention relates to Nb, T
i, Al-based Cr-based stainless steel coated arc welding rods must have a high-temperature-strength deposited metal, have excellent welded metal performance such as ductility, toughness, and crack resistance, and have good welding workability. It is intended.
【０００６】[0006]
【課題を解決するための手段】本発明者らは前述の課題
を解決するため、心線成分や被覆剤成分を種々調整し、
Ｎｂ，Ｔｉ，Ａｌ入り含Ｃｒステンレス被覆アーク溶接
棒における高温強度などの溶着金属性能や溶接作業性と
の関係を鋭意検討した結果、次のような知見を得た。即
ち、Ｎｉ及びＶを心線又は被覆剤の一方、又は両方にそ
れぞれ適量含有させて、溶着金属中にＮｉ、Ｖを微量添
加すれば２００〜４００℃の高温強度が顕著に高まるこ
とを見いだした。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have variously adjusted the core component and the coating agent component,
As a result of earnestly examining the relationship between the weld metal performance such as high-temperature strength and welding workability in a Cr-containing stainless steel-coated arc welding rod containing Nb, Ti, and Al, the following findings were obtained. That is, it has been found that if one or both of the core wire and the coating material contain Ni and V in an appropriate amount, and a small amount of Ni and V is added to the deposited metal, the high-temperature strength at 200 to 400 ° C. is significantly increased. .
【０００７】しかし、このようなＮｉ及びＶの添加効果
は心線中の酸素量が所定量を超えると著しく減じると共
に、延性や靭性も劣化するため、心線中の酸素含有量は
所定量以下に制限する必要がある。本発明は以上の知見
に基くものであって、その要旨とするところは、Ｃｒを
１１〜２２％含有し、Ｏを０．０１０％以下に規制した
心線の外周に、ＣａＣＯ3 を２０〜６０％、ＣａＦ2 を
１５〜４５％含有する被覆剤を被覆率２０〜５０％で塗
布したフェライト系ステンレス溶接棒において、心線及
び被覆剤の一方又は両方に心線重量比でＮｉを０．００
３〜０．４％，Ｖを０．００３〜０．５％含有し、延
性、靭性、耐割れ性を損なうことなく溶着金属の高温強
度を確保することを特徴とするフェライト系ステンレス
溶接棒にある。However, the effect of the addition of Ni and V is significantly reduced when the oxygen content in the core exceeds a predetermined amount, and the ductility and toughness are deteriorated. Therefore, the oxygen content in the core is less than the predetermined amount. Need to be restricted to The present invention is based on the above findings, and the gist of the present invention is that Cr is
11 containing 22%, the outer periphery of the core wire that regulates the O below 0.010%, CaCO 3 20 to 60%, a coating agent containing CaF 2 15 to 45% by coverage 20-50% In the applied ferritic stainless steel welding rod, Ni is added to one or both of the core wire and the coating agent in a core wire weight ratio of 0.00.
3 to 0.4%, the V contains 0.003 to 0.5%, extending
High temperature strength of the deposited metal without impairing the toughness, toughness and crack resistance
A ferrite stainless steel welding rod characterized by ensuring a high degree of strength.
【０００８】なお、ここでいう心線重量比とは次式の関
係で示されるものを指し、かつ同式中の被覆剤配合比と
は被覆剤全重量に対する添加原料の配合比を意味し、さ
らに被覆率とは溶接棒中で被覆剤重量の占める割合を意
味する。 心線重量比＝心線中の含有量 (％) ＋［被覆剤中の配合比 (％) ×被覆率 (％) ／100 ］ Here, the core wire weight ratio refers to the ratio represented by the following formula, and the coating compounding ratio in the same formula means the mixing ratio of the added material to the total weight of the coating agent. Further, the coverage means the proportion of the weight of the coating material in the welding rod. Core weight ratio = content in core wire (%) + [mixing ratio in coating agent (%) x coverage (%) / 100]
【０００９】[0009]
【作用】以下に本発明を作用と共に説明する。Ｃｒ系ス
テンレス鋼にはマルテンサイト系のステンレス鋼があ
り、鋼材中のＣｒ含有量はこれら鋼種によって異なって
いるが、一般的に１１〜２０％の範囲にある。本発明溶
接棒は、このようなＣｒ系ステンレス鋼及び、これらの
クラッド鋼の溶接や炭素鋼上の肉盛溶接に適用するもの
であり、高温強度や耐食性などＣｒ系ステンレス鋼と同
等の溶着金属性能を確保する必要があるので、必然的に
溶着金属のＣｒ含有量はＣｒ系ステンレス鋼と同程度に
しなければならない。The present invention will be described below together with the operation. Cr-based stainless steels include martensitic stainless steels, and the Cr content in the steel material varies depending on these steel types, but is generally in the range of 11 to 20%. The welding rod of the present invention is applied to such a Cr-based stainless steel and the welding of these clad steels and build-up welding on carbon steel. Since it is necessary to ensure the performance, the Cr content of the deposited metal must be inevitably the same as that of the Cr stainless steel.
【００１０】またＣｒは、不可避な主要元素であるの
で、主として心線中に添加し、被覆剤中への添加は補助
的に行う方が望ましい。即ち、心線中のＣｒ含有量が１
１％未満になると、被覆剤中のＣｒ量を多くしなければ
ならず、被覆剤の耐熱性に著しく悪影響を及ぼすので、
良好な溶接作業性が得られなくなる。逆に、心線中のＣ
ｒ量が２２％をこえると溶着金属中のＣｒが過多となっ
て、靭性が著しく劣化する。[0010] Since Cr is an inevitable main element, it is preferable to add Cr mainly to the core wire and to supplement the addition to the coating material. That is, the Cr content in the core wire is 1
When the content is less than 1 %, the amount of Cr in the coating material must be increased, and the heat resistance of the coating material is significantly adversely affected.
Good welding workability cannot be obtained. Conversely, C
If the amount of r exceeds 22%, the amount of Cr in the deposited metal becomes excessive, and the toughness is significantly deteriorated.
【００１１】次に、心線中に不純物として含有する酸素
は、溶着金属の延性や靭性を劣化し、合金剤として添加
するＣｒ，Ｎｂ，Ｖ，Ｔｉ，Ａｌなどの酸化消耗を促進
する。従って、本発明のような酸化し易いＶを微量範囲
に制御する溶接棒においては、０．０１０％以下に制限
しないと、溶着金属中のＶ添加量を適量範囲に調整する
ことが困難となる。Next, oxygen contained as an impurity in the core wire deteriorates the ductility and toughness of the deposited metal and promotes the oxidative consumption of Cr, Nb, V, Ti, Al, etc. added as an alloying agent. Therefore, in the welding rod for controlling V which is easily oxidized to a very small range as in the present invention, it is difficult to adjust the amount of V added to the deposited metal to an appropriate range unless it is limited to 0.010% or less. .
【００１２】被覆剤中に添加するＣａＣＯ3 は、ＣＯ2
ガスを発生して大気中からの窒素、酸素、水素を遮断す
ると同時に塩基性のスラグを形成して溶着金属を保護す
るが、被覆剤中の含有量が２０％未満になると、これら
の効果が発揮されず、耐棒焼け性などの溶接作業性も劣
化する。また６０％を超えると、スパッタが多発する。CaCO 3 added to the coating agent is CO 2
It generates gas to block nitrogen, oxygen and hydrogen from the atmosphere, and at the same time, forms a basic slag to protect the deposited metal. However, when the content in the coating material is less than 20%, these effects become ineffective. It is not exhibited, and the welding workability such as bar burning resistance also deteriorates. If it exceeds 60%, spatters occur frequently.
【００１３】ＣａＦ2 はスラグの融点や粘性を低下し
て、流動性の良いスラグを生成するので、ピットやブロ
ーホールの欠陥防止に有効的である。しかし、このよう
な効果は１５％以上の添加で現れるが、４５％を超える
とアークが不安定となってスパッタが多発する。CaF 2 lowers the melting point and viscosity of slag to produce slag with good fluidity, and is therefore effective in preventing defects in pits and blowholes. However, such an effect appears when the addition is 15% or more, but when it exceeds 45%, the arc becomes unstable and spatter occurs frequently.
【００１４】被覆率は、小さすぎるとアークの安定性や
耐棒焼け性が劣化し、反対に過大になると、被覆の保護
筒が深くなり、アーク長が伸び、アークの持続が困難に
なるため２０％を下限とし、５０％を上限とした。If the coverage is too small, the stability of the arc and the resistance to burning are deteriorated. On the other hand, if the coverage is too large, the protection tube of the coating becomes deep, the arc length increases, and it becomes difficult to maintain the arc. The lower limit was 20% and the upper limit was 50%.
【００１５】Ｎｉ及びＶは、それぞれの適量範囲で複合
添加すれば、溶着金属の高温強度が高くなる。このＮ
ｉ，Ｖの添加は心線及び被覆剤の一方又は両方から行う
が、心線全重量比でＮｉが０．００３％未満、Ｖは０．
００３未満の場合には効果がない。またＮｉが０．４％
を超えると常温引張強度が低下し、Ｖは０．５％を超え
ると延性、靭性が低下するので、Ｎｉ含有量は０．００
３〜０．４％、Ｖ含有量は０．００３〜０．５％にそれ
ぞれ制御する必要がある。[0015] If Ni and V are added together in the appropriate amount ranges, the high-temperature strength of the deposited metal increases. This N
The addition of i and V is performed from one or both of the core wire and the coating agent. Ni is less than 0.003% and V is 0.1% by total weight ratio of the core wire.
If it is less than 003, there is no effect. Ni is 0.4%
If V exceeds 0.5%, the room temperature tensile strength decreases, and if V exceeds 0.5%, ductility and toughness decrease.
It is necessary to control the V content to 3 to 0.4% and the V content to 0.003 to 0.5%, respectively.
【００１６】なお、本発明溶接棒には、その他の成分と
してＳｉＯ2 ，ＴｉＯ2 ，Ａｌ2 Ｏ3 ，ＣａＯ，Ｍｇ
Ｏ，Ｋ2 Ｏ，Ｎａ2 Ｏなどの金属酸化物、ＢａＣＯ3 ，
ＭｇＣＯ3 などの炭酸塩、ＭｇＦ2 ，ＡｌＦ3 ，ＢａＦ
2 ，Ｎａ3 ＡｌＦ6 などの金属弗化物、Ｃｒ，Ｍｏ，Ｎ
ｂ，Ａｌ，Ｔｉ，Ｍｇ，Ｍｎ，Ｆｅなどの金属粉末を被
覆剤中に添加できる。The welding rod of the present invention contains SiO 2 , TiO 2 , Al 2 O 3 , CaO, Mg as other components.
Metal oxides such as O, K 2 O, Na 2 O, BaCO 3 ,
Carbonates such as MgCO 3 , MgF 2 , AlF 3 , BaF
2 , metal fluorides such as Na 3 AlF 6 , Cr, Mo , N
Metal powders such as b, Al, Ti, Mg, Mn, and Fe can be added to the coating.
【００１７】以上のように本発明溶接棒は、心線にＣｒ
を適量添加し、酸素含有量を制限すると同時に心線中及
び被覆剤中の一方又は両方に添加するＮｉ，Ｖ含有量や
被覆剤中のＣａＣＯ3 ，ＣａＦ2 含有量をそれぞれ適量
範囲に制御することにより、高温環境下においても高強
度を有し、しかもその他の溶着金属の諸性能や溶接作業
性を良好にすることができる。As described above, the welding rod of the present invention has
At the same time as limiting the oxygen content and simultaneously controlling the Ni, V content added to one or both of the core wire and the coating material and the CaCO 3 and CaF 2 content in the coating material to appropriate ranges. Thereby, it has high strength even in a high temperature environment, and can improve various performances and welding workability of other deposited metals.
【００１８】ここで、溶接棒の製造方法について言及す
ると、心線及び配合して混合した被覆剤の粉末を準備
し、被覆剤粉末を水ガラス（珪酸カリ、珪酸ソーダ水溶
液）のバインダーで湿式混合してから、心線に被覆した
後、２００〜４５０℃で約１時間以上の乾燥，焼成をす
る。Here, the method of manufacturing the welding rod will be described. A powder of a coating material mixed and mixed with a core wire is prepared, and the coating material powder is wet-mixed with a binder of water glass (potassium silicate, sodium silicate aqueous solution). Then, after covering the core wire, drying and firing are performed at 200 to 450 ° C. for about 1 hour or more.
【００１９】[0019]
【実施例】以下に本発明の実施例について述べる。表１
に供試心線の化学成分を示す。また表２に供試心線と被
覆剤の組み合わせによる被覆アーク溶接棒の組成を示
す。表３には使用した鋼板の化学成分を、表４には表２
の被覆アーク溶接棒と表３の鋼板を用いて溶接した溶着
金属の常温及び高温引張試験結果、０℃における衝撃試
験結果、溶接作業性試験結果を示す。Embodiments of the present invention will be described below. Table 1
Shows the chemical components of the test core wire. Table 2 shows the composition of the coated arc welding rod by the combination of the test core wire and the coating agent. Table 3 shows the chemical composition of the steel sheet used, and Table 4 shows Table 2
The results of the room temperature and high temperature tensile tests, the results of the impact test at 0 ° C., and the results of the welding workability test of the deposited metal welded using the coated arc welding rod of No. 1 and the steel sheet of Table 3 are shown.
【００２０】なお、溶接条件は棒径４．０mmφの溶接棒
を用いて、溶接電流１４０Ａ（ＡＣ）、アーク電圧２２
〜２６Ｖ、溶接速度１５０cm／min、予熱・パス間温度
１５０℃、下向姿勢で図１に示す開先形状の試験板に溶
接した。図１において、板厚ｔ＝２０mm、開先角度θ＝
４５°、ルート間隔Ｇ＝１２mmとした。The welding conditions were as follows: using a welding rod having a rod diameter of 4.0 mmφ, welding current 140 A (AC), arc voltage 22
It welded to the test plate of the groove shape shown in FIG. In FIG. 1, the plate thickness t = 20 mm, the groove angle θ =
45 ° and the root interval G = 12 mm.
【００２１】溶着金属の高温引張試験片はＪＩＳ Ｚ０
５６７（径；６mmφ）、常温引張試験片はＪＩＳ Ｚ３
１１ Ａ１号、衝撃試験片はＪＩＳ Ｚ３１１２ ４号
を採取した。なお、試験片加工前に溶接後熱処理をＤ４
１０Ｎｂ系溶接棒は８５０℃×２ｈ（５９０℃まで徐冷
後空冷）、Ｄ４３０Ｎｂ系溶接棒及びＳＵＳ４３４相当
の溶着金属成分を有する溶接棒については７７０℃×２
ｈ（５９０℃まで徐冷後空冷）で実施した。The high-temperature tensile test piece of the deposited metal is JIS Z0
567 (diameter: 6 mmφ), room temperature tensile test piece is JIS Z3
JIS Z31124 was sampled for 11 A1 and an impact test piece. The post-weld heat treatment was performed before processing the test piece.
10Nb welding rod is 850 ° C × 2h (slowly cooled to 590 ° C., then air-cooled). D430Nb welding rod and 770 ° C × 2 welding rod having SUS434 equivalent welding metal component.
h (slow cooling to 590 ° C. followed by air cooling).
【００２２】表２と表４の被覆アーク溶接棒Ｎｏ．１〜
１２は比較例であり、Ｎｏ．１３〜２１は本発明であ
る。表４の結果から明らかなように、Ｎｏ．１は心線中
のＣｒ量が１１％未満のため、被覆剤中にＣｒを多量に
添加した溶接棒であるが、耐棒焼け性などの溶接作業性
が悪い。The coated arc welding rod Nos. 1 to
No. 12 is a comparative example. 13 to 21 are the present invention. As is clear from the results in Table 4, Reference numeral 1 denotes a welding rod containing a large amount of Cr in the coating agent because the amount of Cr in the core wire is less than 11 %, but has poor welding workability such as bar burning resistance.
【００２３】Ｎｏ．２は心線中のＣｒ量が２２％を超え
ているため、溶着金属中のＣｒ量が過多となり、０℃の
靭性が低い。Ｎｏ．３はＤ４３０Ｎｂ系の溶接棒である
が、心線中の酸素量が０．０１０％を超えているため心
線中に添加したＶの酸化消耗が促進され、高温強度が低
い。また０℃の靭性も低い。No. In No. 2, since the amount of Cr in the core wire exceeded 22%, the amount of Cr in the deposited metal was excessive, and the toughness at 0 ° C. was low. No. Reference numeral 3 denotes a D430Nb-based welding rod. Since the oxygen content in the core wire exceeds 0.010%, the oxidative consumption of V added to the core wire is promoted, and the high-temperature strength is low. Also, the toughness at 0 ° C. is low.
【００２４】Ｎｏ．４は炭酸カルシウムが６０％を超え
ているため、アーク状態やビード外観が悪く、スパッタ
が多発する。Ｎｏ．５はＣａＦ2 が１５％未満のため、
スラグの流動性などが悪い。Ｎｏ．６はＣａＦ2 が４５
％を超えているため、アーク状態が悪く、スパッタが多
発する。No. In No. 4, since the content of calcium carbonate exceeds 60%, the arc state and bead appearance are poor, and spatter frequently occurs. No. 5 has less than 15% of CaF 2 ,
The fluidity of the slag is poor. No. 6 is 45 CaF 2
%, The arc state is poor, and spatter frequently occurs.
【００２５】Ｎｏ．７は被覆率が２０％未満のため、耐
棒焼け性などの溶接作業性が悪く、被覆率が５０％を超
えているＮｏ．８はアーク状態が悪い。Ｎｏ．９は心線
及び被覆剤の一方又は両方に含有するＮｉ量が心線重量
比で０．００３％未満であり、またＮｏ．１０はＶが
０．００３％のため、いずれの溶接棒も高温強度が低
い。Ｎｏ．１１はＮｉが０．４％を超えているため常温
強度が低く、Ｎｏ．１２はＶが０．５％を超えているた
め、０℃の靭性が低い。No. Since No. 7 has a coverage of less than 20%, welding workability such as bar burning resistance is poor, and No. 7 having a coverage of more than 50%. 8 has a bad arc state. No. In No. 9, the amount of Ni contained in one or both of the core wire and the coating agent was less than 0.003% by weight of the core wire. In No. 10, since V is 0.003%, all the welding rods have low high-temperature strength. No. No. 11 has low room temperature strength because Ni exceeds 0.4%. In No. 12, since V exceeds 0.5%, the toughness at 0 ° C. is low.
【００２６】これに対して、本発明溶接棒のＮｏ．１３
〜２１は高温及び常温強度が高く、０℃の靭性や溶接作
業も良好であった。なお、表４における溶接作業性評価
と総合評価は［○：良好、△：やや不良、×：不良］を
示すものである。On the other hand, in the welding rod of the present invention, 13
Nos. 21 to 21 had high strength at high temperature and room temperature, and also had good toughness at 0 ° C and welding work. The evaluation of welding workability and the overall evaluation in Table 4 indicate [○: good, Δ: slightly poor, ×: poor].
【００２７】[0027]
【表１】 [Table 1]
【００２８】[0028]
【表２】 [Table 2]
【００２９】[0029]
【表３】 [Table 3]
【００３０】[0030]
【表４】 [Table 4]
【００３１】[0031]
【表５】 [Table 5]
【００３２】[0032]
【表６】 [Table 6]
【００３３】[0033]
【表７】 [Table 7]
【００３４】[0034]
【表８】 [Table 8]
【００３５】[0035]
【発明の効果】以上のように本発明は、含Ｃｒ被覆アー
ク溶接棒における「心線中のＣｒ、Ｏ量」、「被覆剤中
のＣａＣＯ3 ，ＣａＦ2 」、「心線及び被覆剤の一方又
は両方のＮｉ，Ｖ」、「被覆率」をそれぞれ適正範囲に
制御することによって、溶着金属の高温強度やその他の
諸性能が良好となり、Ｃｒ系ステンレス鋼溶接部の品質
向上に貢献できる。As described above, the present invention relates to the "Cr and O content in the core wire", "CaCO 3 and CaF 2 in the coating agent", " By controlling one or both of Ni and V ”and“ coverage ”within appropriate ranges, the high-temperature strength and other various performances of the deposited metal are improved, which can contribute to the improvement of the quality of the Cr-based stainless steel weld.
【図１】溶接作業性、高温及び常温引張試験、衝撃試験
などに用いた試験板の開先形状を示す断面図である。 ｔ 板厚 θ 開先角度 Ｇ ルート間隔FIG. 1 is a cross-sectional view showing a groove shape of a test plate used for welding workability, high-temperature and room-temperature tensile tests, impact tests, and the like. t Plate thickness θ Groove angle G Root interval
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−161496（ＪＰ，Ａ) 安藤精一ら著「現代溶接技術大系《第 ５巻》」（昭55−１−23）、産報出版、 Ｐ．187−190 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-161496 (JP, A) Seiichi Ando et al. Hou Shuppan, P. 187-190
Claims (1)
じ）含有し、Ｏを０．０１０％以下に規制した心線の外
周に、ＣａＣＯ3 を２０〜６０％、ＣａＦ2 を１５〜４
５％含有する被覆剤を被覆率２０〜５０％に塗布したフ
ェライト系ステンレス溶接棒において、心線及び被覆剤
の一方又は両方に心線全重量比でＮｉを０．００３〜
０．４％，Ｖを０．００３〜０．５％含有し、延性、靭
性、耐割れ性を損なうことなく溶着金属の高温強度を確
保することを特徴とするフェライト系ステンレス溶接
棒。1. An outer periphery of a core wire containing 11 to 22% of Cr (% by weight, the same applies hereinafter) and restricting O to 0.010% or less, wherein CaCO 3 is 20 to 60% and CaF 2 is 15 to 15%. 4
Off coated on coverage 20-50% coating agent containing 5%
In a ferrite-based stainless steel welding rod, one or both of the core wire and the coating agent contains Ni in a total weight ratio of the core wire of 0.003 to 0.003%.
0.4%, 0.003 ~ 0.5% V , ductility, toughness
High-temperature strength of the deposited metal without impairing the
Ferritic stainless welding rod, characterized in that the holding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3272731A JP2633755B2 (en) | 1991-10-21 | 1991-10-21 | Cr containing arc welding rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3272731A JP2633755B2 (en) | 1991-10-21 | 1991-10-21 | Cr containing arc welding rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05111790A JPH05111790A (en) | 1993-05-07 |
| JP2633755B2 true JP2633755B2 (en) | 1997-07-23 |
Family
ID=17517996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3272731A Expired - Lifetime JP2633755B2 (en) | 1991-10-21 | 1991-10-21 | Cr containing arc welding rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2633755B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104476012A (en) * | 2014-10-31 | 2015-04-01 | 河海大学常州校区 | Niobium-strengthened wear-resisting surfacing electrode and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62161496A (en) * | 1986-01-09 | 1987-07-17 | Kawasaki Steel Corp | Covered electrode for cr-mo high temperature steel |
-
1991
- 1991-10-21 JP JP3272731A patent/JP2633755B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 安藤精一ら著「現代溶接技術大系《第５巻》」（昭５５−１−２３）、産報出版、Ｐ．１８７−１９０ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05111790A (en) | 1993-05-07 |
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