JPH0255148B2 - - Google Patents
Info
- Publication number
- JPH0255148B2 JPH0255148B2 JP57116815A JP11681582A JPH0255148B2 JP H0255148 B2 JPH0255148 B2 JP H0255148B2 JP 57116815 A JP57116815 A JP 57116815A JP 11681582 A JP11681582 A JP 11681582A JP H0255148 B2 JPH0255148 B2 JP H0255148B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- metal
- stainless steel
- ferritic stainless
- weld
- 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 - Lifetime
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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
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Description
本発明は19Cr−2Mo系として代表されるCr量
16〜21wt％、Mo量0.75〜3.5wt％を含有する高純
度フエライト系ステンレスクラツド鋼の突合せ溶
接方法に関する。
従来、石油工業、化学工業用の装置用耐食性材
料としてSUS304、SUS316等のオーステナイト
系ステンレス鋼が主として使用されてきたが、こ
れ等は塩化物等を含有する種々の環境下では応力
腐食割れを発生し易いという欠点があつた。かか
る欠点を除去するためにSUS304、SUS316とほ
ぼ同等の耐食性及び加工性を有し、価格も同等
で、かつ応力腐食割れ感受性の低い高純度フエラ
イト系ステンレス鋼が開発され、これの代表的な
ものとしてSUS444（19Cr−2Mo系高純度フエラ
イト系ステンレス鋼）がJIS化された。
従つて、石油工業、化学工業の装置用耐食性材
料としてオーステナイト系ステンレス鋼に高純度
フエライト系ステンレス鋼がとつて替りつつある
が、高純度フエライト系ステンレス鋼は市販材と
しては主として板厚が12mm以下であり、比較的薄
肉の貯槽、熱交換器、圧力容器等にその用途が制
限されていた。
高純度フエライト系ステンレス鋼を合せ材とす
るクラツド鋼の溶接方法の確立が厚肉大型の貯
槽、圧力容器の分野に於て期待され、又特に応力
腐食割れが問題視される天然ガスギヤザリングラ
インや化学プラントの配管部材としての用途もそ
の価格面から期待されている。
高純度フエライト系ステンレス鋼を合せ材とす
るクラツド鋼の溶接方法の一例が特開昭56−
56797号公報に開示されている。第１図に示す如
く高純度フエライト系ステンレス鋼の合せ材１を
初層側とする片側突合せ溶接とし、初層若しくは
第２層までを合せ材１と同一組成の溶接棒を用い
て合せ材溶接金属（共金）３として共金溶接し、
第２層若しくは第３層から最終層までを母材と同
一組成を有する溶接棒、オーステナイト系ステン
レス鋼溶接棒又はインコネル系溶接棒を用いて溶
接して母材溶接金属（共金又はオーステナイト系
ステンレス鋼又はインコネル）４を得る溶接方法
が開示されている。而しこの方法の欠点として次
の事項が挙げられる。
１ 母材部を母材と同一組成の溶接棒で溶接した
場合は、合せ材溶接部と母材溶接部との境界層
に硬化域が形成され、この硬化域は母材のA1
変態点以下の温度域における溶接後熱処理では
容易に軟化しない。
２ 母材部をオーステナイト系ステンレス溶接棒
や、インコネル系溶接棒で溶接した場合には上
記の如き硬化域の形成はないが、溶接材料が高
価であり、又非溶接部と溶接部との熱膨張係数
の差に起因して高温域での使用による歪や熱応
力の発生がある。
３ 健全な裏波ビードを形成するために過度の目
違いを生じないように勝れた開先精度が要求さ
れ、曲げ成型品の突合せ溶接や、広巾かつ長尺
鋼板の突合せ溶接が困難である。
又従来より第２図に示す如く、Ｘ開先として
母材２側溶接を行つて母材溶接金属（共金）５
を形成した後に合せ材１側をD309Mo、D316
などのモリブデン（Mo）を含むオーステナイ
ト系ステンレス鋼溶接棒を用いて盛金溶接して
合せ材溶接金属（オーステナイト系ステンレス
鋼）６を得ている。この場合には溶接金属或は
半溶融域における応力腐食割れの発生や、合せ
材と溶接金属との熱膨脹係数の相違による熱応
力や歪の発生という問題があつた。
本発明は、上記の如き事情に鑑みてなされたも
のであり、19Cr−2Mo系高純度フエライト系ス
テンレス鋼で代表されるCr量16〜21wt％とMo量
0.75〜3.5wt％を含有する高純度フエライト系ス
テンレス鋼（以下単に高純度フエライト系ステン
レス鋼と称する。）を合せ材とするクラツド鋼の
突合せ溶接において、耐食性、機械的性質ともに
勝れた継手溶接部を提供できる溶接法、溶接棒、
積層法の組合せについて試験を行い、適正な組合
せ条件を知得して高純度フエライト系ステンレス
鋼の突合せ溶接方法を提供することを目的として
いる。
本発明に係る高純度フエライト系ステンレス鋼
の突合せ溶接について図面を使用して説明する。
第３図イに示す如くＸ型開先として母材２側を
共金溶接棒にて溶接して母材溶接金属（共金）５
とし、溶接完了後に合せ材１側をCr量25〜33wt
％、Mo量0.75〜3.5wt％を含有する高純度フエラ
イト系ステンレス鋼溶接棒を用いて第１層目を溶
接して合せ材溶接金属（高純度フエライト系ステ
ンレス鋼）７を得る。第１層目で肉厚が不足の場
合には第３図ロに示すように残部を合せ材１と同
一成分の溶接棒を用いて肉盛溶接し、第２層目の
合せ材溶接金属（共金）３とする。
Cr量25〜33wt％、Mo量0.75〜3.5wt％を含有
する高純度フエライト系ステンレス鋼棒による溶
接にあつては、一層のみの溶接で良好な機械的性
質を有することが判明した。しかし、母材のＣ量
が多い場合にはＣの浸入により機械的性質が若干
劣化することがある。Ｃ量の多い母材には次に説
明する方法が適している。他の方法としては、第
３図ハに示すＸ型開先として母材２側を共金溶接
棒にて溶接して母材溶接金属（共金）５として溶
接完了後に合せ材１側を合せ材１と同一成分を有
する溶接棒を用いて第１層目の溶接を行つて合せ
材溶接金属（共金）３を得た後に、Cr量25〜
33wt％、Mo量0.75〜3.5wt％を含有する高純度フ
エライト系ステンレス鋼棒によつて第２層目の肉
盛溶接を行つて合せ材溶接金属（高純度フエライ
ト系ステンレス鋼）７を得る。第２層目の合せ材
溶接金属７で溶接金属の肉厚が不足する場合に
は、第３図ニに示すように残部をを合せ材１と同
一成分を有する溶接棒を用いて溶接を完了する。
なお前記２方法の合せ材部の溶接においては低希
釈溶接に限定しなくてよい。
以上説明した如く、本発明に係る19Cr−2Mo
系高純度フライト系ステンレスクラツド鋼の突合
せ溶接方法によれば、従来の片側突合せ溶接にお
ける硬化域の発生、非溶接部と溶接部との熱膨張
係数の差に起因する熱応力の発生及び開先精度の
厳密な確保、又従来の両面突合せ溶接における応
力腐食割れの発生や、熱応力の発生のない溶接継
手を容易に得ることができた。
以下に、３mm厚のSUS444ステンレス鋼を合せ
材とし、11mm厚のSB42を母材とするクラツド鋼
両面突合せ溶接の実施例を示す。
実施例 １
第３図イのＸ型開先として第１表に示す溶接条
件に従つて母材２側を共金溶接棒にて溶接して母
材溶接金属（共金）５とし、次いで合せ材１側を
Cr量25〜33wt％、Mo量0.75〜3.5wt％を含有す
る高純度フエライト系ステンレス鋼溶接棒を用い
てTIG溶接により１層の肉盛溶接を行つた。
The present invention deals with the Cr content represented by the 19Cr-2Mo system.
This invention relates to a method for butt welding high purity ferritic stainless clad steel containing 16 to 21 wt% and Mo content of 0.75 to 3.5 wt%. Traditionally, austenitic stainless steels such as SUS304 and SUS316 have been mainly used as corrosion-resistant materials for equipment in the petroleum and chemical industries, but these tend to suffer from stress corrosion cracking in various environments containing chlorides, etc. The drawback was that it was easy to do. In order to eliminate these drawbacks, high-purity ferritic stainless steels have been developed that have corrosion resistance and workability almost equivalent to SUS304 and SUS316, are comparable in price, and have low stress corrosion cracking susceptibility. SUS444 (19Cr-2Mo high-purity ferritic stainless steel) was standardized as JIS. Therefore, high-purity ferritic stainless steel is replacing austenitic stainless steel as a corrosion-resistant material for equipment in the oil and chemical industries, but high-purity ferritic stainless steel is mainly used as a commercially available material with a plate thickness of 12 mm or less. Therefore, its use was limited to relatively thin-walled storage tanks, heat exchangers, pressure vessels, etc. Establishment of a welding method for clad steel made of high-purity ferritic stainless steel is expected to be used in the field of thick-walled large storage tanks and pressure vessels, and also for natural gas gearing lines where stress corrosion cracking is a particular problem. Due to its price, it is also expected to be used as piping components in industrial and chemical plants. An example of a welding method for clad steel using high-purity ferritic stainless steel as a mating material was published in Japanese Patent Application Laid-Open No. 1986-
It is disclosed in Publication No. 56797. As shown in Fig. 1, one side butt welding is performed with the high-purity ferritic stainless steel laminate 1 as the first layer side, and the laminate welds the first layer or up to the second layer using a welding rod with the same composition as the laminate 1. Co-metal welding as metal (co-metal) 3,
Weld the second or third layer to the final layer using a welding rod having the same composition as the base metal, an austenitic stainless steel welding rod, or an Inconel welding rod. A welding method for obtaining a steel or Inconel) 4 is disclosed. However, the following points are listed as drawbacks of this method. 1 When the base metal is welded with a welding rod having the same composition as the base metal, a hardened area is formed in the boundary layer between the welded joint and the base metal, and this hardened area is A 1 of the base metal.
It does not soften easily in post-weld heat treatment in the temperature range below the transformation point. 2. If the base metal is welded with an austenitic stainless steel welding rod or an Inconel welding rod, the hardening region described above will not be formed, but the welding material is expensive and the heat between the non-welded and welded parts is Due to the difference in expansion coefficients, distortion and thermal stress may occur when used in high temperature ranges. 3. In order to form a sound uranami bead, excellent bevel precision is required to avoid excessive misalignment, making it difficult to butt weld bent products and butt weld wide and long steel plates. . Conventionally, as shown in Fig. 2, welding is performed on the base metal 2 side as an
After forming, the 1st side of the cladding material is D309Mo, D316
The composite weld metal (austenitic stainless steel) 6 is obtained by metal welding using an austenitic stainless steel welding rod containing molybdenum (Mo) such as . In this case, there were problems such as the occurrence of stress corrosion cracking in the weld metal or semi-molten region, and the occurrence of thermal stress and strain due to the difference in coefficient of thermal expansion between the laminate and the weld metal. The present invention was made in view of the above-mentioned circumstances, and the present invention has been made in view of the above-mentioned circumstances.
Joint welding with excellent corrosion resistance and mechanical properties in butt welding of clad steel made of high-purity ferritic stainless steel containing 0.75 to 3.5 wt% (hereinafter simply referred to as high-purity ferritic stainless steel). welding methods, welding rods,
The purpose of this study is to conduct tests on combinations of lamination methods, learn appropriate combination conditions, and provide a method for butt welding high-purity ferritic stainless steel. Butt welding of high-purity ferritic stainless steel according to the present invention will be explained using the drawings. As shown in Fig. 3A, the base metal 2 side is welded with a matching metal welding rod to form an X-shaped groove, and the base metal weld metal (common metal) 5
After welding is completed, the chromium content on the 1st side of the cladding material is 25 to 33wt.
%, and a high purity ferritic stainless steel welding rod containing Mo content of 0.75 to 3.5 wt% is used to weld the first layer to obtain a composite weld metal (high purity ferritic stainless steel) 7. If the thickness of the first layer is insufficient, as shown in Figure 3 (b), the remaining part is overlay welded using a welding rod with the same composition as laminate 1, and the weld metal of the 2nd layer laminate ( Mutual money) 3. It has been found that when welding a high-purity ferritic stainless steel rod containing 25 to 33 wt% Cr and 0.75 to 3.5 wt% Mo, it has good mechanical properties even when only one layer is welded. However, when the amount of C in the base material is large, the mechanical properties may deteriorate slightly due to the infiltration of C. The method described below is suitable for base materials with a large amount of C. Another method is to weld the base metal 2 side with a matching metal welding rod to form an X-shaped groove as shown in Fig. 3C, and then join the cladding material 1 side together as the base metal weld metal (common metal) 5 after welding is completed. After welding the first layer using a welding rod having the same composition as material 1 to obtain composite weld metal (common metal) 3, the Cr content is 25 to 25.
33 wt% and a high purity ferritic stainless steel rod containing Mo content of 0.75 to 3.5 wt%, the second layer is overlay welded to obtain a welded metal (high purity ferritic stainless steel) 7. If the thickness of the weld metal in the second layer weld metal 7 is insufficient, weld the remaining part using a welding rod having the same composition as the welding material 1, as shown in Figure 3 D. do.
Note that the welding of the mating material parts using the two methods described above does not have to be limited to low dilution welding. As explained above, 19Cr-2Mo according to the present invention
According to the butt welding method for high-purity flight stainless clad steel, the occurrence of a hardening zone in conventional one-sided butt welding, the occurrence of thermal stress due to the difference in the coefficient of thermal expansion between the non-welded part and the welded part, and the development of It was possible to easily obtain a welded joint with strict precision of the tip and without the occurrence of stress corrosion cracking or thermal stress in conventional double-sided butt welding. The following is an example of double-sided butt welding of clad steel using 3 mm thick SUS444 stainless steel as the mating material and 11 mm thick SB42 as the base material. Example 1 The base metal 2 side was welded with a matching metal welding rod to form the base metal weld metal (common metal) 5 according to the welding conditions shown in Table 1 as the X-shaped groove shown in Figure 3A, and then the material 1 side
One layer of overlay welding was performed by TIG welding using a high-purity ferritic stainless steel welding rod containing 25 to 33 wt% Cr and 0.75 to 3.5 wt% Mo.
【表】
得られた継手溶接部の機械的性質、最終層のチ
エツク分析結果及び硬さ（ビツカース硬さ）分布
をそれぞれ第２表、第３表及び第４図に示す。第
４図においてＡ範囲は母材溶接金属５、Ｂ範囲は
合せ材溶接金属３の範囲を示す。[Table] The mechanical properties of the obtained joint welds, the check analysis results of the final layer, and the hardness (Vickers hardness) distribution are shown in Tables 2, 3, and Figure 4, respectively. In FIG. 4, range A indicates the base weld metal 5, and range B indicates the range of the weld metal 3.
【表】【table】
【表】
継手溶接部はクラツド原質部と同等か、それ以
上の機械的性質並びに化学組成を有している。
又、腐食試験についても合せ材と同等の性能を示
した。
実施例 ２
第３図ロのＸ型開先として第４表に示す溶接条
件に従つて母材２側を共金溶接棒にて溶接して母
材溶接金属（共金）５とし、次いで合せ材１側を
Cr量25〜33wt％、Mo量0.75〜3.5wt％を含有す
る高純度フエライト系ステンレス鋼溶接棒を用い
て第１層目の合せ材溶接金属（高純度フエライト
系ステンレス鋼）７を得た後に第２層目を合せ材
１と同一成分の溶接棒を用いて肉盛溶接し、第２
層目の合せ材溶接金属（共金）３を得た。[Table] The joint weld has mechanical properties and chemical composition that are equal to or better than the cladding material.
In addition, it showed the same performance as the laminated material in the corrosion test. Example 2 The base metal 2 side was welded with a matching metal welding rod to form the base metal weld metal (common metal) 5 according to the welding conditions shown in Table 4 as the X-shaped groove shown in Fig. 3B, and then welded together. Material 1 side
After obtaining the first layer weld metal (high-purity ferritic stainless steel) 7 using a high-purity ferritic stainless steel welding rod containing 25 to 33 wt% of Cr and 0.75 to 3.5 wt% of Mo. The second layer is overlay welded using a welding rod with the same composition as material 1, and the second layer is
A laminated weld metal (common metal) 3 was obtained.
【表】
得られた継手溶接部の機械的性質、合せ材溶接
層のチエツク分析結果及び硬度（ビツカース硬
さ）分布をそれぞれ第５表、第６表及び第５図に
示す。第５図のＡ範囲は母材溶接金属５、Ｂ範囲
は合せ材溶接金属３、B′範囲は合せ材溶接金属
７の範囲を示す。[Table] The mechanical properties of the obtained joint welds, the check analysis results and hardness (Vickers hardness) distribution of the laminate weld layer are shown in Tables 5, 6, and Figure 5, respectively. In FIG. 5, range A indicates the base metal weld 5, range B indicates the weld metal 3 of the cladding material, and range B' indicates the range of the welded metal 7 of the cladding material.
【表】【table】
【表】
いずれも良好な結果を示した。
実施例 ３
第３図ハのＸ型開先として第７表に示す溶接条
件に従つて母材２側を共金溶接棒にて溶接して母
材溶接金属（共金）５とし次いで合せ材１側を合
せ材１と同一成分を有する溶接棒を用いて第１層
目の溶接を行つて合せ材溶接金属（共金）３を得
た後にCr量25〜33wt％、Mo量0.75〜3.5wt％を
含有する高純度フエライト系ステンレス鋼棒によ
つて第２層目の肉盛溶接を行つて合せ材溶接金属
（高純度フエライト系ステンレス鋼）７を得た。[Table] All showed good results. Example 3 The base metal 2 side was welded with a matching metal welding rod according to the welding conditions shown in Table 7 as the X-shaped groove shown in Fig. 3C to form the base metal weld metal (common metal) 5, and then the laminate material. After welding the first layer on the first side using a welding rod having the same composition as the cladding material 1 to obtain the cladding material weld metal (common metal) 3, the Cr content is 25 to 33 wt% and the Mo content is 0.75 to 3.5. The second layer was overlay welded using a high-purity ferritic stainless steel bar containing 10% by weight to obtain a cladding weld metal (high-purity ferritic stainless steel) 7.
【表】
得られた継手溶接部の機械的性質、合せ材最終
溶接金属７のチエツク分析、硬さ（ビツカース硬
さ）分布をそれぞれ第８表、第９表及び第６図に
示す。第６図において、Ａ範囲は母材溶接金属
５、Ｂ範囲は合せ材溶接金属３、B′範囲は合せ
材溶接金属７の範囲を示す。[Table] The mechanical properties of the obtained joint welds, the check analysis of the final weld metal 7 of the composite material, and the hardness (Vickers hardness) distribution are shown in Tables 8, 9, and FIG. 6, respectively. In FIG. 6, range A indicates the range of base metal weld 5, range B indicates the range of welded metal 3, and range B' indicates the range of welded metal 7.
【表】【table】
【表】
いずれも良好な結果が得られた。
実施例 ４
第３図ニのＸ型開先として第10表に示す溶接条
件に従つて母材２側を共金溶接棒にて溶接して母
材溶接金属（共金）５とし、次いで合せ材１側を
合せ材と同一成分の溶接棒を用いて、第１層の溶
接を行つて合せ材溶接金属（共金）３を得た後に
Cr量25〜33wt％、Mo量0.75〜3.5wt％を含有す
る高純度フエライト系ステンレス鋼棒にて第２層
目の肉盛溶接を行つて合せ材溶接金層（高純度フ
エライト系ステンレス鋼）７を得た。更に合せ材
と同一成分の溶接棒を用いて第３層目の溶接を行
つて合せ材溶接金属（共金）３を得た。[Table] Good results were obtained in all cases. Example 4 Using the X-shaped groove shown in Fig. 3D, the base metal 2 side was welded with a matching metal welding rod according to the welding conditions shown in Table 10 to form the base metal weld metal (common metal) 5, and then welded together. After welding the first layer on the material 1 side using a welding rod with the same composition as the cladding material to obtain the cladding material weld metal 3.
A second layer of overlay welding is performed using a high-purity ferritic stainless steel bar containing 25 to 33 wt% of Cr and 0.75 to 3.5 wt% of Mo to create a welded metal layer (high-purity ferritic stainless steel). I got a 7. Furthermore, a third layer of welding was performed using a welding rod having the same composition as that of the cladding material, thereby obtaining a cladding material weld metal (common metal) 3.
【表】
得られた継手溶接部の機械的性質、合せ材最終
溶接金属３のチエツク分析、硬さ（ビツカース硬
さ）分布を、それぞれ第11表、第12表及び第７図
に示す。第７図においてＡ範囲は母材溶接金属
５、Ｂ範囲は合せ材溶接金属３、B′範囲は合せ
溶接金属７の範囲を示す。[Table] The mechanical properties of the obtained joint welds, the check analysis of the final weld metal 3 of the composite material, and the hardness (Vickers hardness) distribution are shown in Tables 11, 12, and Figure 7, respectively. In FIG. 7, range A indicates the range of base metal weld 5, range B indicates the range of welded metal 3, and range B' indicates the range of welded metal 7.
【表】【table】
【表】 いずれも良好な結果が得られた。【table】 Good results were obtained in all cases.
第１図は、高純度フエライト系ステンレス鋼を
合せ材とするクラツド鋼の従来の片面突合せ溶接
の説明図、第２図は同じく従来の両面突合せ溶接
の説明図、第３図イ，ロ，ハ及びニはそれぞれ本
発明に係る両面突合せ溶接の説明図、第４図は実
施例１による継手溶接部の硬さ分布図、第５図は
実施例２による継手溶接部の硬さ分布図、第６図
は実施例３による継手溶接部の硬さ分布図、第７
図は、実施例４による継手溶接部の硬さ分布図で
ある。
１：合せ材、２：母材、３：合せ材溶接金属
（共金）、４：母材溶接金属（共金、オーステナイ
ト系ステンレス鋼、インコネル）、５：母材溶接
金属（共金）、６：合せ材溶接金属（オーステナ
イト系ステンレス鋼）、７：合せ材溶接金属（高
純度フエライト系ステンレス鋼）。
Figure 1 is an explanatory diagram of conventional single-sided butt welding of clad steel using high-purity ferritic stainless steel as the mating material, Figure 2 is an explanatory diagram of conventional double-sided butt welding, and Figure 3 is A, B, and C. and D are explanatory diagrams of double-sided butt welding according to the present invention, FIG. 4 is a hardness distribution diagram of a joint weld according to Example 1, and FIG. Fig. 6 is a hardness distribution diagram of the joint welded part according to Example 3, Fig. 7
The figure is a hardness distribution diagram of a joint welded part according to Example 4. 1: Lamination material, 2: Base metal, 3: Lamination material weld metal (cometal), 4: Base metal weld metal (cometal, austenitic stainless steel, Inconel), 5: Base metal weld metal (cometal), 6: Laminating weld metal (austenitic stainless steel), 7: Laminating weld metal (high purity ferritic stainless steel).
Claims (1)
有する高純度フエライト系ステンレス鋼を合せ材
とするクラツド鋼の溶接において、母材部の共金
溶接を完了した後に、合せ材側をCr量25〜33wt
％、Mo量0.75〜3.5wt％を含有する高純度フエラ
イト系ステンレス鋼溶接棒を用いて第１層目を溶
接し、溶接が完了しない場合には残部を合せ材と
同一成分を有する溶接棒を用いて肉盛溶接して溶
接を完了することを特徴とする19Cr−2Mo系高
純度フエライト系ステンレスクラツド鋼の突合せ
溶接方法。 ２ 16〜21wt％のCrと0.75〜3.5wt％のMoを含
有する高純度フエライト系ステンレス鋼を合せ材
とするクラツド鋼の溶接において、母材部の共金
溶接を完了した後に、合せ材側を合せ材と同一成
分を有する溶接棒を用いて第１層目を溶接し、次
いでCr量25〜33wt％、Mo量0.75〜3.5wt％を含
有する高純度フエライト系ステンレス鋼溶接棒を
用いて１層肉盛溶接し、溶接が完了しない場合に
は残部を合せ材と同一成分を有する溶接棒を用い
て肉盛溶接して溶接を完了することを特徴とする
19Cr−2Mo系高純度フエライト系ステンレスク
ラツド鋼の突合せ溶接方法。[Claims] 1. In welding clad steel made of high-purity ferritic stainless steel containing 16 to 21 wt% Cr and 0.75 to 3.5 wt% Mo, welding of the base metal part is completed. After that, the amount of Cr on the laminate side is 25~33wt.
Weld the first layer using a high-purity ferritic stainless steel welding rod containing Mo content of 0.75 to 3.5wt%, and if welding is not completed, weld the remaining part using a welding rod with the same composition as the cladding material. A method for butt welding 19Cr-2Mo high-purity ferritic stainless clad steel, characterized in that the welding is completed by overlay welding. 2. When welding clad steel made of high-purity ferritic stainless steel containing 16 to 21 wt% Cr and 0.75 to 3.5 wt% Mo, the welding material side is The first layer is welded using a welding rod having the same composition as the laminated material, and then a high-purity ferritic stainless steel welding rod containing 25 to 33 wt% Cr and 0.75 to 3.5 wt% Mo is used to weld the first layer. The method is characterized in that one layer is overlay welded, and if the welding is not completed, the remaining part is overlay welded using a welding rod having the same composition as the cladding material to complete the welding.
Butt welding method for 19Cr-2Mo high purity ferritic stainless clad steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11681582A JPS597484A (en) | 1982-07-07 | 1982-07-07 | Butt welding method of high purity ferritic stainless clad steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11681582A JPS597484A (en) | 1982-07-07 | 1982-07-07 | Butt welding method of high purity ferritic stainless clad steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS597484A JPS597484A (en) | 1984-01-14 |
| JPH0255148B2 true JPH0255148B2 (en) | 1990-11-26 |
Family
ID=14696324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11681582A Granted JPS597484A (en) | 1982-07-07 | 1982-07-07 | Butt welding method of high purity ferritic stainless clad steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS597484A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60151280A (en) * | 1984-01-19 | 1985-08-09 | 日本電気株式会社 | Manufacture of aluminum nitride sintered body |
| JPS6238770A (en) * | 1985-08-13 | 1987-02-19 | Niigata Eng Co Ltd | Welding method for high-purity ferritic stainless steel clad steel rroducts |
| CN101982282A (en) * | 2010-11-16 | 2011-03-02 | 四川电力建设三公司 | Welding technology for butt welding of composite boards |
| CN103752993B (en) * | 2013-12-24 | 2016-07-06 | 上海振华重工集团(南通)传动机械有限公司 | A kind of welding method of stainless steel clad plate |
| CN103659204B (en) * | 2013-12-24 | 2016-07-06 | 上海振华重工集团(南通)传动机械有限公司 | The special processing method of heavy windlass large module gear |
| CN104439639A (en) * | 2014-11-19 | 2015-03-25 | 柳州凯通机械有限公司 | Cooler tube plate and cooling tube welding method |
| CN106001967A (en) * | 2016-07-18 | 2016-10-12 | 西安交通大学 | Butt welding method for double-layer metal composite boards |
| JP7845211B2 (en) * | 2023-02-01 | 2026-04-14 | Ｊｆｅエンジニアリング株式会社 | Clad steel welding method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937157B2 (en) * | 1979-08-20 | 1984-09-07 | 株式会社日本製鋼所 | Single-sided welding method for stainless steel fittings |
| JPS5656797A (en) * | 1979-10-12 | 1981-05-18 | Jgc Corp | Welding method of high purity ferrite stainless steel |
-
1982
- 1982-07-07 JP JP11681582A patent/JPS597484A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS597484A (en) | 1984-01-14 |
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