JPH0195895A - Stainless steel wire for gas shielded arc welding - Google Patents
Stainless steel wire for gas shielded arc weldingInfo
- Publication number
- JPH0195895A JPH0195895A JP25246087A JP25246087A JPH0195895A JP H0195895 A JPH0195895 A JP H0195895A JP 25246087 A JP25246087 A JP 25246087A JP 25246087 A JP25246087 A JP 25246087A JP H0195895 A JPH0195895 A JP H0195895A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- wire
- stainless steel
- corrosion resistance
- arc welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 42
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract 3
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 abstract description 36
- 230000007797 corrosion Effects 0.000 abstract description 36
- 239000002184 metal Substances 0.000 abstract description 23
- 229910052751 metal Inorganic materials 0.000 abstract description 23
- 238000005336 cracking Methods 0.000 abstract description 11
- 239000013535 sea water Substances 0.000 abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 229910052748 manganese Inorganic materials 0.000 abstract description 5
- 229910052759 nickel Inorganic materials 0.000 abstract description 4
- 229910052710 silicon Inorganic materials 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000009864 tensile test Methods 0.000 description 5
- 229910000990 Ni alloy Inorganic materials 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010612 desalination reaction Methods 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 241000341910 Vesta Species 0.000 description 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- 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、耐食用オーステナイト系のステンレス鋼の溶
接に供せられるステンレス鋼ガスシールドアーク溶接用
ワイヤに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a stainless steel gas-shielded arc welding wire used for welding corrosion-resistant austenitic stainless steel.
近年、水資源のとぼしい国において、海水淡水化の動き
が活溌になって来ており、大型海水淡水化装置の実用化
が急務となっている。海水に耐える材料としては従来Ｔ
ｉないしハステロイ−Ｃのみであるとされていたが、い
ずれも価格が高く大型構造物に適用すると費用がかかり
すぎるという難点がある。このような背景をふまえ、よ
り価格の安い耐海水用ステンレス鋼の開発がすすめられ
、規格化されている。例えば、ＡＳＴＭ Ａ２４０５３
１２５４であり、海水中においても耐食性にすぐれてい
るものである。In recent years, the seawater desalination movement has become more active in countries with limited water resources, and the practical application of large-scale seawater desalination equipment has become an urgent need. The conventional material that can withstand seawater is T.
It was said that only Hastelloy-I and Hastelloy-C were available, but both have the disadvantage that they are expensive and too expensive to apply to large structures. Based on this background, the development of cheaper seawater-resistant stainless steel is being promoted and standardized. For example, ASTM A24053
1254, and has excellent corrosion resistance even in seawater.
この鋼材の溶接材料としては、従来、高Ｎｉ合金系が適
用されており、例えば溶接技術１９８３年４月号２５ペ
一ジ表３に２１Ｃｒ −９Ｍｏ−５Ｆｅ−残Ｎｉ系（Ａ
ｖｅｓｔａ ＰＩ３）が開示されている。他に高Ｎｉ合
金溶接材料としては、特開昭５６−１２８６９６号公報
や特開昭５８−６６９９４号公報、特開昭５８−８２１
９０号公報等の開示があるが、これらは主に耐熱用の溶
接金属の強度や高温特性の改善を目的としたものである
。すなわち、本発明の如き共金糸の溶接材料の開示はみ
られない。Conventionally, a high Ni alloy system has been used as a welding material for this steel material. For example, 21Cr-9Mo-5Fe-remaining Ni system (A
vesta PI3) is disclosed. Other high Ni alloy welding materials include JP-A-56-128696, JP-A-58-66994, and JP-A-58-821.
Although there are disclosures such as Japanese Patent No. 90, these are mainly aimed at improving the strength and high-temperature characteristics of heat-resistant weld metals. That is, there is no disclosure of a welding material for co-metal threads as in the present invention.
前述のように、耐海水用ステンレス鋼に適用されている
溶接材料は、高Ｎｉ合金溶接材料であり、高価である上
、溶接高温割れが発生しやすく、溶接施工上問題がある
。一方、ＡＳＴＭ Ａ２４０５３１２５４と同一成分の
溶接材料では、耐食性および機械的性”能の面で十分な
性能が得られない。As mentioned above, the welding material used for seawater-resistant stainless steel is a high-Ni alloy welding material, which is expensive and prone to welding hot cracking, which poses problems in welding work. On the other hand, welding materials having the same composition as ASTM A240531254 do not provide sufficient performance in terms of corrosion resistance and mechanical performance.
本発明は、これらの点に鑑みてなされたものであり、高
Ｎｉ合金溶接材料より低価格で、しかも耐食性および機
械的性能のすぐれている。ステンレス鋼ガスシールドア
ーク溶接用ワイヤを提供するものである。The present invention has been made in view of these points, and is less expensive than high Ni alloy welding materials, and has superior corrosion resistance and mechanical performance. The present invention provides a stainless steel gas shielded arc welding wire.
〔問題点を解決するための手段・作用〕まず、本発明に
おいてガスシールドアーク溶接とは、Ａｒ、 Ｈｅなど
の不活性ガス雰囲気中で行うアーク溶接であって、ティ
グ溶接、プラズマ溶接を指す。[Means and actions for solving the problems] First, in the present invention, gas shielded arc welding refers to arc welding performed in an inert gas atmosphere such as Ar or He, and refers to TIG welding and plasma welding.
本発明者らは、種々のワイヤを試作して、ＡＳＴＭＡ２
４０５３１２５４相当鋼材に適用してティグ溶接を行い
、緒特性を調べた結果、以下の知見を得た。The present inventors prototyped various wires and made ASTM2
As a result of applying TIG welding to a steel material equivalent to 40531254 and investigating its properties, the following findings were obtained.
すなわち、Ｃ，Ｓｉ、 Ｍｎ、 Ｐ、 Ｓを低く押
え、Ｃｒ。That is, keep C, Si, Mn, P, and S low, and Cr.
ＮｉおよびＮを鋼材成分より高くし、且つ溶接金属中に
若干のフェライト量を含有する組成にすることにより、
溶接時の高温割れの発生がなく、且つ、溶接終了後熱処
理（１１００″Ｃ以上に加熱後水冷）を施すことによっ
て、耐食性が向上し、しかも引張−さ、延性が鋼材とほ
ぼ向等のものが得られた。By making the Ni and N content higher than the steel material components and making the weld metal a composition containing a small amount of ferrite,
No high-temperature cracking occurs during welding, and by applying heat treatment after welding (heating to 1100"C or higher followed by water cooling), corrosion resistance is improved, and tensile strength and ductility are almost the same as steel materials. was gotten.
すなわち、本発明の要旨は重量％で、Ｃ：０．０２５％
以下、Ｓｉ：０．３％以下、Ｍｎ：１．０％以下、Ｐ：
０．０２０％以下、 Ｓ ： ０．０１０％以下、 Ｃ
ｕ： ０．５〜１．０％、 Ｃｒ： ２１．５〜２５％
、 Ｎｉ ： １７．５〜２０％。That is, the gist of the present invention is in weight%, C: 0.025%
Below, Si: 0.3% or less, Mn: 1.0% or less, P:
0.020% or less, S: 0.010% or less, C
u: 0.5-1.0%, Cr: 21.5-25%
, Ni: 17.5-20%.
Ｍｏ：６．Ｏ〜７．０％、及びＮ ： ０．２５〜０．
５０％含有することを特徴とするステンレス鋼ガスシー
ルドアーク溶接用ワイヤにある。Mo:6. O~7.0%, and N: 0.25~0.
A stainless steel gas-shielded arc welding wire characterized by containing 50%.
次に本発明の成分限定理由について述べる。まず、Ｃは
Ｃｒと結合しやすく、粒界等に炭化物として析出し、耐
食性、延性を阻害するとともにＭＯとも結合して耐溶接
高温割れ性も低下させる。したがって、Ｃは低くする必
要があり、０．０２５％を上限とする。Next, the reason for limiting the ingredients of the present invention will be described. First, C easily combines with Cr, precipitates as carbide at grain boundaries, etc., impairing corrosion resistance and ductility, and also combines with MO, reducing weld hot cracking resistance. Therefore, C needs to be low, and the upper limit is set at 0.025%.
次にＳｉは耐溶接高温割れ性を低下させるとともに耐食
性、延性が劣化するので、低く押える必要があり、０．
３％を上限とする。Next, Si reduces welding hot cracking resistance and deteriorates corrosion resistance and ductility, so it must be kept low.
The upper limit is 3%.
Ｍｎは、多量に含有すると耐食性に有害な金属間化合物
の析出を促進するので、１．０％を上限とする。If Mn is contained in a large amount, it promotes the precipitation of intermetallic compounds harmful to corrosion resistance, so the upper limit is set at 1.0%.
Ｐ、 Ｓは、いずれも不可避的な不純物であり、両者と
も溶接高温割れを著しく増大させる。従って両元素とも
できるだけ低減する必要があり、ＰＯ，０２０％以下、
３０．０１０％以下とする。Both P and S are unavoidable impurities, and both significantly increase weld hot cracking. Therefore, it is necessary to reduce both elements as much as possible, PO, 0.020% or less,
30.010% or less.
Ｃｒは耐食性を付与する主要元素であり、その効果を十
分ならしめるためには、２１．５％以上が必要である。Cr is a main element that imparts corrosion resistance, and in order to achieve its sufficient effect, 21.5% or more is required.
一方、多量に含有するとワイヤの製造性が著しく低下す
るとともに、耐食性に有害な金属間化合物の析出を促す
ので、２５％を上限とする。On the other hand, if it is contained in a large amount, the manufacturability of the wire will be significantly reduced and it will also promote the precipitation of intermetallic compounds harmful to corrosion resistance, so the upper limit is set at 25%.
Ｃｕは、耐食性を向上させるので、０．５％以上必要で
あるが、一方多量に含有すると溶接高温割れを増大させ
るので１．０％を上限とする。Cu improves corrosion resistance, so it is necessary to contain 0.5% or more, but if it is contained in a large amount, hot cracking during welding increases, so the upper limit is set at 1.0%.
Ｎｉは、オーステナイト生成元素で、オーステナイトを
安定させ耐食性、延性を向上させるので１７．５％以上
必要である。一方、多量に含有すると、溶接金属中にフ
ェライト量が存在しなくなり、溶接高温側性が増大する
ので、上限を２０％とする。Ni is an austenite-forming element that stabilizes austenite and improves corrosion resistance and ductility, so it is necessary to have an amount of 17.5% or more. On the other hand, if it is contained in a large amount, there will be no ferrite in the weld metal and the welding high-temperature sideness will increase, so the upper limit is set at 20%.
Ｍｏは、マトリックスに固溶して耐食性、強度を向上さ
せる。その効果を十分ならしめるためには６．０％以上
必要であるが、一方７．０％を超えて含有すると耐食性
、延性に有害な金属間化合物の生成がみられるので、上
限を７．０％とする。Mo is dissolved in the matrix to improve corrosion resistance and strength. In order to have a sufficient effect, it is necessary to have a content of 6.0% or more, but if the content exceeds 7.0%, the formation of intermetallic compounds harmful to corrosion resistance and ductility is observed, so the upper limit should be set to 7.0%. %.
Ｎは、マトリックスに固溶して耐食性、強度を向上させ
るが、その効果を十分ならしめるためには０．２５％以
上必要である。一方、０．５０％を超えて含有させると
溶接金属中にフェライト量が存在しなくなり、溶接高温
割れが増大するので、上限を０．５０％とする。N improves corrosion resistance and strength by forming a solid solution in the matrix, but 0.25% or more is required to achieve sufficient effects. On the other hand, if the content exceeds 0.50%, there will be no ferrite in the weld metal and weld hot cracking will increase, so the upper limit is set to 0.50%.
上記成分以外に脱酸剤として、Ａｆｆｉを含有させるこ
とができる。また、ワイヤの熱間加工性を向上させるた
め、若干のＣａ＋ Ｍｇを含有させることができる。In addition to the above components, Affi may be included as a deoxidizing agent. Further, in order to improve the hot workability of the wire, a small amount of Ca+Mg can be contained.
なお、本発明溶接ワイヤは、ティグ溶接、プラズマ溶接
等不活性ガスアーク溶接ワイヤとして使用される他、被
覆アーク溶接棒の心線としても使用することができる。The welding wire of the present invention can be used as an inert gas arc welding wire for TIG welding, plasma welding, etc., and can also be used as a core wire of a coated arc welding rod.
これらは、耐海水用高耐食オーステナイトステンレス鋼
の溶接に適用されるとともに、それら構造物の補修溶接
あるいは肉盛溶接等に適用できるが、いずれの場合も溶
接後熱処理（１１００°Ｃ以上に加熱後水冷）を施すこ
とによって、良好な性能が得られるものである。These can be applied to welding highly corrosion-resistant austenitic stainless steel for seawater resistance, and can also be applied to repair welding or overlay welding of these structures, but in both cases, post-weld heat treatment (heating to 1100 Good performance can be obtained by applying water cooling.
ここで、本発明溶接ワイヤの製造方法について言及する
と、真空、または大気雰囲気のもとて溶解、鋳造して得
られたインゴットを熱間鍛造し、次に熱間圧延によりコ
イルとし、これより冷間伸線により所定のワイヤ径まで
伸線するものである。Here, referring to the method for manufacturing the welding wire of the present invention, an ingot obtained by melting and casting in a vacuum or an atmospheric atmosphere is hot forged, then hot rolled into a coil, and then cooled. The wire is drawn to a predetermined wire diameter by inter-drawing.
熱間鍛造および熱間圧延は、はぼ１０００〜１２５０°
Ｃ程度で熱処理を行って、ワイヤの硬さを調整すること
がある。For hot forging and hot rolling, the angle is approximately 1000 to 1250°.
The hardness of the wire may be adjusted by heat treatment at about C.
以下、本発明の効果を実施例により、さらに具体的に述
べる。Hereinafter, the effects of the present invention will be described in more detail with reference to Examples.
第１表にワイヤの化学成分を示す。ワイヤ径はいずれも
１．６ｍｍφである。Table 1 shows the chemical composition of the wire. The diameter of each wire is 1.6 mmφ.
第２表に供試鋼板の諸元を示す。鋼板は、ＡＳＴＭＡ２
４０５３１２５４相当の高耐食オーステナイトステンレ
ス鋼で、板厚１０ｍｍである。Table 2 shows the specifications of the test steel sheets. The steel plate is ASTMA2
It is made of highly corrosion-resistant austenitic stainless steel equivalent to 40531254 and has a plate thickness of 10 mm.
第４表に溶接高温割れ試験結果を示す。溶接高温割れ試
験は、Ｃ型拘束治具突合せ溶接割れ試験（ＪＩＳ Ｚ
３１５５−１９７４） ニ準じ、第２表に示す鋼板を用
い、Ｙ開先（８０°、ルートフェース：１ｍｍ。Table 4 shows the weld hot cracking test results. The weld hot crack test is a C-type restraint jig butt weld crack test (JIS Z
3155-1974), using the steel plate shown in Table 2, Y groove (80°, root face: 1 mm).
ルートギャップ：２ｍｍ）で、第３表に示す溶接条件で
溶接を行い、クレータ部およびスタート部を除いたビー
ド本体に割れが認められるか否かを観察し、ビード本体
に割れのあるものは、不可とした。Root gap: 2mm), welding is performed under the welding conditions shown in Table 3, and the bead body excluding the crater part and start part is observed to see if any cracks are observed.If there is a crack in the bead body, Not allowed.
第５表に溶着金属の腐食試験結果を示す。Table 5 shows the results of the corrosion test for weld metal.
第６表に溶着金属の引張試験結果を示す。Table 6 shows the results of the tensile test of the weld metal.
いずれも、第２表に示す鋼材を用い、鋼板を２枚重ねに
して２０ｍｍ厚さとし、開先角度：４５°。In both cases, steel materials shown in Table 2 were used, two steel plates were stacked to have a thickness of 20 mm, and the groove angle was 45°.
ルートギャップ：１２鵬とし、第３表に示す溶接条件で
溶接を行った。溶接終了後の試験板は、熱処理（１１５
０°Ｃ×６０分加熱後水冷）を行った。The root gap was set to 12, and welding was performed under the welding conditions shown in Table 3. After welding, the test plate was heat treated (115
After heating at 0°C for 60 minutes, cooling with water was performed.
耐孔食試験は、溶着金属中央部より３ ’ｔ、 Ｘ１０
ｗＸ３０ｊ２ｍｍの試験片を採取し耐粒界腐食試験は溶
着金属中央部より３ｔＸ１０ｗＸ７（１！ｍｍの試験片
を採取して行った。The pitting corrosion resistance test was performed at 3't from the center of the welded metal,
A test piece of wx30j2mm was taken, and a test piece of 3tx10wx7 (1!mm) was taken from the center of the weld metal for the intergranular corrosion resistance test.
耐食試験は、耐孔食性及び耐粒界腐食性を調べた。耐孔
食性は、塩化物環境での臨界孔食発生温度（ＣＰＴ）を
求め評価した。腐食条件としては、ＪＩＳＧ ０５７８
−１９８１に定める６％塩化第二鉄＋０．０５ Ｎ塩酸
水溶液を用いた。臨界孔食発生温度（ＣＰＴ）は、５°
Ｃ間隔で管理された腐食環境に２４時間浸漬し、孔食の
発生しない最高温度を求め、それを定義した。In the corrosion resistance test, pitting corrosion resistance and intergranular corrosion resistance were investigated. Pitting corrosion resistance was evaluated by determining the critical pitting corrosion onset temperature (CPT) in a chloride environment. For corrosion conditions, JISG 0578
A 6% ferric chloride + 0.05 N hydrochloric acid aqueous solution as specified in 1981 was used. Critical pitting temperature (CPT) is 5°
The specimen was immersed in a corrosive environment controlled at C intervals for 24 hours, and the maximum temperature at which pitting corrosion did not occur was determined and defined.
また、耐粒界腐食性については、ＪＩＳ Ｇ ０５７５
に定める硫酸、硫酸銅腐食試験に定める硫酸・硫酸銅溶
液中で連続１６時間沸騰させたのち、曲げ半径２ｔで曲
げ角度１８０°まで曲げ、曲げ面について粒界腐食によ
る割れの有無を観察した。Regarding intergranular corrosion resistance, JIS G 0575
After boiling continuously for 16 hours in a sulfuric acid/copper sulfate solution as specified in the sulfuric acid and copper sulfate corrosion tests specified in 1., the bending radius was 2t and the bending angle was 180°, and the bent surface was observed for cracks due to intergranular corrosion.
また、溶着金属の機械的性能としては、引張試験を行い
、引張強さおよび延性を評価した。試験片は、溶着金属
中央部からＪＩＳ Ｚ ３１１１Δ１号試験片（平行部
１２．５ ｍｍφの丸棒引張試験片）を採取し、室温に
て引張試験を行った。In addition, as for the mechanical performance of the weld metal, a tensile test was conducted to evaluate the tensile strength and ductility. A JIS Z 3111Δ No. 1 test piece (a round bar tensile test piece with a parallel portion of 12.5 mmφ) was taken from the center of the welded metal and subjected to a tensile test at room temperature.
第３表 溶接条件
第４表 溶接金属の割れ試験結果
第５表 溶着金属腐食試験結果
第６表 溶着金属の引張試験結果
以上の結果から、本発明のＡ１−Ａ１６は、いずれも溶
接金属の耐割れ性が良好で、しかも溶着金属の耐食性、
および引張強さ、伸びがすぐれており、ＡＳＴＭΔ２４
０５３１２５４相当鋼材とほぼ同等の性能を有している
ことは明らかである。Table 3 Welding conditions Table 4 Weld metal cracking test results Table 5 Weld metal corrosion test results Table 6 Weld metal tensile test results From the above results, A1 to A16 of the present invention are all Good crackability, corrosion resistance of welded metal,
It has excellent tensile strength and elongation, and has ASTM Δ24
It is clear that the steel material has almost the same performance as the steel material equivalent to 0531254.
これに対し、比較ワイヤＢ１は、Ｃが０．０２５％を超
えており、Ｂ２は、Ｓｉが０．３％を超えており、Ｂ４
はＰが０．０２０％を超えており、Ｂ５はＳが０．０１
０％を超えており、Ｂ７はＣｕが１．０％を超えており
、Ｂ１１はＮｉが２０％を超えており、Ｂ１５はＮが０
．５０％を超えており、いずれも溶接金属の耐割れ試験
において、ビード本体に割れがみられた。Ｂ３はＭｎが
１．０％を超えており、Ｂ６はＣｕが０．５％未満であ
り、Ｂ８はＣｒが２１．５％未満であり、ＢＩＯはＮｉ
が１７．５％未満であり、Ｂ１３はＭｏが７．０％を超
えており、Ｂ１４はＮが０．２５％未満であり、いずれ
も溶着金属の耐食性が劣る。また、Ｂ８．Ｂ１２゜Ｂ１
０は溶着金属の引張強さが低く、Ｂ９はＣｒが２５％を
超えており、Ｂ１３はＭｏが７．０％を超えており、と
もに溶着金属の伸びが低い。On the other hand, comparison wire B1 has C exceeding 0.025%, B2 has Si exceeding 0.3%, and B4
has P exceeding 0.020%, and B5 has S of 0.01%.
In B7, Cu exceeds 1.0%, in B11, Ni exceeds 20%, and in B15, N exceeds 0%.
．． In both cases, cracks were observed in the bead body in the weld metal crack resistance test. B3 has Mn greater than 1.0%, B6 has Cu less than 0.5%, B8 has Cr less than 21.5%, and BIO has Ni
is less than 17.5%, B13 has Mo exceeding 7.0%, and B14 has N less than 0.25%, and the corrosion resistance of the weld metal is poor in all of them. Also, B8. B12゜B1
0 has a low tensile strength of the weld metal, B9 has a Cr content of more than 25%, B13 has a Mo content of more than 7.0%, and both have a low elongation of the weld metal.
以上の実施例から明らかなように、本発明ワイヤはＣ，
Ｓｉ、 Ｍｎ、 ＰおよびＳを制限し、ＣＬＩ、 Ｃｒ
。As is clear from the above examples, the wire of the present invention has C,
Limit Si, Mn, P and S, CLI, Cr
.
Ｎｉ、 Ｍｏ、およびＮを適量含有させることにより、
溶接金属の耐割れ性にすぐれ、がっ溶着金属の耐海水腐
食性ならびに引張強さ、伸びが良好で、ＡＳＴＭ Ａ２
４０５３１２５４相当鋼材とほぼ同等の性能を有し、大
型海水淡水化装置の構造部材の溶接に適しているもので
あり、産業上の効果は極めて顕著である。By containing appropriate amounts of Ni, Mo, and N,
The weld metal has excellent cracking resistance, the weld metal has good seawater corrosion resistance, tensile strength, and elongation, and is ASTM A2.
It has almost the same performance as steel material equivalent to 40531254, and is suitable for welding structural members of large seawater desalination equipment, and its industrial effects are extremely significant.
Claims (1)
アーク溶接用ワイヤ。[Claims] C: 0.025% or less Si: 0.3% or less Mn: 1.0% or less Ni: 17.5 to 20% Cr: 21.5 to 25% Mo: 6. A stainless steel characterized by containing 0 to 7.0% Cu: 0.5 to 1.0% N: 0.25 to 0.50% P: 0.020% or less S: 0.010% or less Wire for gas shielded arc welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25246087A JPH0195895A (en) | 1987-10-08 | 1987-10-08 | Stainless steel wire for gas shielded arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25246087A JPH0195895A (en) | 1987-10-08 | 1987-10-08 | Stainless steel wire for gas shielded arc welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0195895A true JPH0195895A (en) | 1989-04-13 |
Family
ID=17237689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25246087A Pending JPH0195895A (en) | 1987-10-08 | 1987-10-08 | Stainless steel wire for gas shielded arc welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0195895A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006015372A (en) * | 2004-07-01 | 2006-01-19 | Nippon Welding Rod Kk | Welding material for stainless steel |
| JP2007296567A (en) * | 2006-05-01 | 2007-11-15 | Nippon Steel Corp | High fatigue-strength fillet welded joint and its formation method |
| US8710405B2 (en) | 2005-04-15 | 2014-04-29 | Nippon Steel & Sumikin Stainless Steel Corporation | Austenitic stainless steel welding wire and welding structure |
| CN106216880A (en) * | 2016-08-25 | 2016-12-14 | 安庆市天涯汽车配件有限公司 | A kind of production technology of stainless steel electrode |
| JP2018529522A (en) * | 2015-08-12 | 2018-10-11 | レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Welded joint and its welding material, welding method |
| CN109865958A (en) * | 2019-02-20 | 2019-06-11 | 江苏金桥焊材科技股份有限公司 | A kind of stainless steel steel welding wire and preparation method thereof suitable for ocean engineering |
| CN109877486A (en) * | 2019-02-20 | 2019-06-14 | 江苏金桥焊材科技股份有限公司 | A kind of stainless steel welding stick and preparation method thereof suitable for furnace body |
-
1987
- 1987-10-08 JP JP25246087A patent/JPH0195895A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006015372A (en) * | 2004-07-01 | 2006-01-19 | Nippon Welding Rod Kk | Welding material for stainless steel |
| JP4512434B2 (en) * | 2004-07-01 | 2010-07-28 | 日本ウエルディング・ロッド株式会社 | Stainless steel welding material |
| US8710405B2 (en) | 2005-04-15 | 2014-04-29 | Nippon Steel & Sumikin Stainless Steel Corporation | Austenitic stainless steel welding wire and welding structure |
| JP2007296567A (en) * | 2006-05-01 | 2007-11-15 | Nippon Steel Corp | High fatigue-strength fillet welded joint and its formation method |
| JP4660421B2 (en) * | 2006-05-01 | 2011-03-30 | 新日本製鐵株式会社 | High fatigue strength fillet welded joint and method for forming the same |
| JP2018529522A (en) * | 2015-08-12 | 2018-10-11 | レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Welded joint and its welding material, welding method |
| CN106216880A (en) * | 2016-08-25 | 2016-12-14 | 安庆市天涯汽车配件有限公司 | A kind of production technology of stainless steel electrode |
| CN109865958A (en) * | 2019-02-20 | 2019-06-11 | 江苏金桥焊材科技股份有限公司 | A kind of stainless steel steel welding wire and preparation method thereof suitable for ocean engineering |
| CN109877486A (en) * | 2019-02-20 | 2019-06-14 | 江苏金桥焊材科技股份有限公司 | A kind of stainless steel welding stick and preparation method thereof suitable for furnace body |
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