JP2003290919A - Method for improving surface of clad-welded part in powder cladding by welding - Google Patents
Method for improving surface of clad-welded part in powder cladding by weldingInfo
- Publication number
- JP2003290919A JP2003290919A JP2002090348A JP2002090348A JP2003290919A JP 2003290919 A JP2003290919 A JP 2003290919A JP 2002090348 A JP2002090348 A JP 2002090348A JP 2002090348 A JP2002090348 A JP 2002090348A JP 2003290919 A JP2003290919 A JP 2003290919A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- torch
- build
- work
- overlay
- 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.)
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は粉末肉盛溶接におけ
る肉盛部の表面肌改善方法に関する。金属材料の熱間圧
延ロールや連続鋳造用ロールは、高温に晒されるため、
その外周面に耐熱性の金属材料が肉盛されている。また
各種反応装置の反応管や焼却炉からの高温の排ガスを利
用する発電装置のボイラー管は、高温に晒されるだけで
なく、腐食性の液体や気体に晒されることが多いため、
その外周面或はまた内周面に耐熱性及び耐食性の金属材
料が肉盛されている。これらの金属材料の肉盛には、各
種の肉盛溶接法が採用されているが、近年では、ＰＴＡ
（プラズマトランスファーアークウエルディング）或は
ＰＰＷ（プラズマパウダーウエルディング）と称される
粉末肉盛溶接が適用されるようになっている。本発明は
かかる粉末肉盛溶接における肉盛部の表面肌改善方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for improving the surface texture of a weld overlay in powder overlay welding. Since hot rolling rolls and rolls for continuous casting of metallic materials are exposed to high temperatures,
A heat resistant metal material is overlaid on the outer peripheral surface thereof. In addition, the reactor tubes of various reactors and the boiler tubes of power generators that use high-temperature exhaust gas from incinerators are not only exposed to high temperatures, but are often exposed to corrosive liquids and gases.
A heat-resistant and corrosion-resistant metal material is overlaid on the outer peripheral surface or the inner peripheral surface. Various overlay welding methods have been adopted for overlaying these metal materials. In recent years, PTA has been used.
Powder overlay welding called (plasma transfer arc welding) or PPW (plasma powder welding) has been applied. The present invention relates to a method for improving the surface skin of a weld overlay in such powder overlay welding.
【０００２】[0002]
【従来の技術】従来、前記のような粉末肉盛溶接として
は、ＰＴＡ装置或はＰＰＷ装置を用い、ワークの回転及
びトーチの移動を行ないつつ、該ワークと該トーチとの
間へ通電してアークを発生させると共に該トーチから肉
盛材料である合金粉末を供給して、該ワークの周面に肉
盛溶接することが行なわれている。ところが、かかる従
来法によると、ワークの周面に螺旋状の肉盛部が形成さ
れ、したがって該肉盛部の表面に相当の凹凸が形成され
るという問題がある。表面に相当の凹凸が形成された肉
盛部では、部位によってその耐熱性や耐食性がばらつ
き、またこれと接触する気体や液体が乱流を起こすだけ
でなく、とりわけ、かくして肉盛溶接したものを通常は
その用途との関係で折り曲げ加工等の機械加工に供する
が、この際に凹部を起点として割れを生じ易いのであ
る。2. Description of the Related Art Conventionally, as the above-mentioned powder overlay welding, a PTA device or a PPW device has been used to rotate a work and move the torch while energizing the work and the torch. An alloy powder, which is a build-up material, is supplied from the torch while an arc is generated, and build-up welding is performed on the peripheral surface of the work. However, according to such a conventional method, there is a problem in that a spiral buildup portion is formed on the peripheral surface of the work, and accordingly, considerable unevenness is formed on the surface of the buildup portion. In the build-up part where considerable unevenness is formed on the surface, the heat resistance and corrosion resistance vary depending on the part, and the gas or liquid contacting this causes turbulent flow. Usually, it is subjected to mechanical processing such as bending in relation to its application, but at this time, cracks are likely to occur starting from the concave portion.
【０００３】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、粉末肉盛溶接において、表面の凹凸を実質
的に無くし、表面を平滑化した肉盛部とすることができ
る、肉盛部の表面肌改善方法を提供する処にある。DISCLOSURE OF THE INVENTION The problem to be solved by the present invention is that in powder overlay welding, the overlay can be obtained by substantially eliminating the surface irregularities and forming a overlay having a smooth surface. There is a method of improving the surface skin of a part.
【０００４】[0004]
【課題を解決するための手段】前記の課題を解決する請
求項１記載の本発明は、ワークの回転及びトーチの移動
を行ないつつ、該ワークと該トーチとの間へ通電してア
ークを発生させると共に該トーチから肉盛材料である金
属粉末を供給して、該ワークの周面に螺旋状の肉盛部を
肉盛溶接した後、該ワークの回転数及び該トーチの移動
速度は肉盛溶接時と同じにし、該合金粉末の供給量を肉
盛溶接時の１０〜５０％にすると共に、該ワークと該ト
ーチとの間への通電量を肉盛溶接時の５０〜９５％にし
て、該肉盛部の凹部に再肉盛溶接し、該肉盛部の表面を
平滑化することを特徴とする粉末肉盛溶接における肉盛
部の表面肌改善方法に係る。According to the present invention for solving the above-mentioned problems, an arc is generated by energizing between the work and the torch while rotating the work and moving the torch. And a metal powder, which is a build-up material, is supplied from the torch and a spiral build-up portion is welded to the peripheral surface of the work, and then the rotation speed of the work and the moving speed of the torch are set to the build-up. The same as during welding, the supply amount of the alloy powder is set to 10 to 50% of the overlay welding, and the amount of electricity passed between the work and the torch is set to 50 to 95% of the overlay welding. The present invention relates to a method for improving the surface skin of a build-up part in powder build-up welding, which comprises re-build-up welding in a recess of the build-up part to smooth the surface of the build-up part.
【０００５】また請求項２記載の本発明は、前記した請
求項１記載の本発明における場合と同様に肉盛溶接した
後、ワークとトーチとの間への通電量は肉盛溶接時と同
じにし、合金粉末の供給量を肉盛溶接時の１０〜５０％
にすると共に、該ワークの回転数及び／又は該トーチの
移動速度を肉盛溶接時の１１０〜２００％にして、該肉
盛部の凹部に再肉盛溶接し、該肉盛部の表面を平滑化す
ることを特徴とする粉末肉盛溶接における肉盛部の表面
肌改善方法に係る。Further, in the present invention according to claim 2, after the overlay welding is performed as in the case of the present invention according to claim 1, the energization amount between the work and the torch is the same as during overlay welding. And the amount of alloy powder supplied is 10 to 50% during overlay welding.
In addition, the rotation speed of the work piece and / or the moving speed of the torch is set to 110 to 200% of that at the time of the overlay welding, and the overlay welding is performed again on the recess of the overlay portion to form the surface of the overlay portion. The present invention relates to a method for improving the surface skin of a weld overlay in powder overlay welding, which is characterized by smoothing.
【０００６】更に請求項３記載の本発明は、前記した請
求項１記載の本発明における場合と同様に肉盛溶接した
後、合金粉末の供給量を肉盛溶接時の１０〜５０％にす
ると共に、ワークとトーチとの間への通電量を肉盛溶接
時の５０〜９５％にし、また該ワークの回転数及び／又
は該トーチの移動速度を肉盛溶接時の１１０〜２００％
にして、肉盛部の凹部に再肉盛溶接し、該肉盛部の表面
を平滑化することを特徴とする粉末肉盛溶接における肉
盛部の表面肌改善方法に係る。Further, according to the present invention of claim 3, after the overlay welding as in the case of the present invention of the above aspect 1, the supply amount of the alloy powder is set to 10 to 50% of that in the overlay welding. At the same time, the energization amount between the work and the torch is set to 50 to 95% during overlay welding, and the rotation speed of the work and / or the moving speed of the torch is set to 110 to 200% during overlay welding.
Then, the present invention relates to a method for improving the surface skin of a build-up portion in powder build-up welding, which comprises re-build-up welding the recess of the build-up portion to smooth the surface of the build-up portion.
【０００７】請求項１〜３記載のいずれの本発明でも、
ＰＴＡ装置或はＰＰＷ装置を用い、ワークの回転及びト
ーチの移動を行ないつつ、該ワークと該トーチとの間へ
通電してアークを発生させると共に該トーチから肉盛材
料である合金粉末を供給して、該ワークの周面に肉盛溶
接し、螺旋状の肉盛部を形成する。In any of the present inventions described in claims 1 to 3,
Using a PTA device or a PPW device, while rotating the work and moving the torch, an electric current is supplied between the work and the torch to generate an arc, and an alloy powder as a build-up material is supplied from the torch. Then, overlay welding is performed on the peripheral surface of the work to form a spiral overlay portion.
【０００８】請求項１記載の本発明では、前記のように
肉盛溶接した後、ワークの回転数及びトーチの移動速度
は肉盛溶接時と同じにし、該トーチからの合金粉末供給
量を肉盛溶接時の１０〜５０％にすると共に、該ワーク
と該トーチとの間への通電量を肉盛溶接時の５０〜９５
％にして、肉盛部の凹部に再肉盛溶接する。肉盛部の凹
部への再肉盛溶接時には、他の条件は肉盛溶接時と変更
せず、例えばトーチから単位時間当たり供給する合金粉
末の重量を変更し、これを例えば肉盛溶接時の１０％に
減らすと共に、例えばワークとトーチとの間へ印加する
電流量を変更し、これを例えば肉盛溶接時の８０％に減
らすのである。According to the first aspect of the present invention, after the overlay welding as described above, the number of revolutions of the work and the moving speed of the torch are the same as those at the overlay welding, and the amount of alloy powder supplied from the torch is the overlay. In addition to 10 to 50% of the welding at the time of overlay welding, the energization amount between the work and the torch is 50 to 95 at the time of overlay welding.
%, And re-build-up welding is performed on the recessed part of the built-up part. At the time of re-build-up welding to the recess of the build-up portion, other conditions are not changed from those at the time of build-up welding, for example, the weight of the alloy powder supplied per unit time from the torch is changed, and this is changed, for example, at the time of build-up welding While reducing to 10%, the amount of current applied between the work and the torch is changed, for example, to 80% during overlay welding.
【０００９】また請求項２記載の本発明では、前記のよ
うに肉盛溶接した後、ワークとトーチとの間への通電量
は肉盛溶接時と同じにし、該トーチからの合金粉末供給
量を肉盛溶接時の１０〜５０％にすると共に、該ワーク
の回転数及び／又は該トーチの移動速度を肉盛溶接時の
１１０〜２００％にして、肉盛部の凹部に再肉盛溶接す
る。肉盛部の凹部への再肉盛溶接時には、他の条件は肉
盛溶接時と変更せず、例えばトーチから単位時間当たり
供給する合金粉末の重量を変更し、これを例えば肉盛溶
接時の１５％に減らすと共に、例えばワークの単位時間
当たりの回転数及びトーチの移動速度のうちでワークの
単位時間当たりの回転数を変更し、これを例えば肉盛溶
接時の１２０％に増すのである。Further, in the present invention as set forth in claim 2, after the overlay welding as described above, the amount of electricity supplied between the work and the torch is made the same as during overlay welding, and the amount of alloy powder supplied from the torch. To 10 to 50% of the overlay welding, and the rotation speed of the work and / or the moving speed of the torch is set to 110 to 200% of the overlay welding, and the overlay welding is performed again in the recess of the overlay portion. To do. At the time of re-build-up welding to the recess of the build-up portion, other conditions are not changed from those at the time of build-up welding, for example, the weight of the alloy powder supplied per unit time from the torch is changed, and this is changed, for example, at the time of build-up welding The number of revolutions per unit time of the work and the number of revolutions per unit time of the torch are changed while the number of revolutions per unit time of the work is reduced to 15%, and this is increased to, for example, 120% during overlay welding.
【００１０】更に請求項３記載の本発明では、前記のよ
うに肉盛溶接した後、トーチからの合金粉末供給量を肉
盛溶接時の１０〜５０％にすると共に、ワークと該トー
チとの間への通電量を肉盛溶接時の５０〜９５％にし、
また該ワークの回転数及び／又は該トーチの移動速度を
肉盛溶接時の１１０〜２００％にして、肉盛部の凹部に
再肉盛溶接する。例えばトーチから単位時間当たり供給
する合金粉末の重量を変更し、これを例えば肉盛溶接時
の２０％に減らすと共に、例えば該ワークと該トーチと
の間へ印加する電流量を変更し、これを例えば肉盛溶接
時の９０％に減らし、また例えば該ワークの単位時間当
たりの回転数及び該トーチの移動速度を変更し、これら
を例えば肉盛溶接時の１２０％に増すのである。Further, in the present invention as set forth in claim 3, after the overlay welding as described above, the alloy powder supply amount from the torch is set to 10 to 50% of that in the overlay welding, and the work and the torch are The amount of electricity to the space between 50 and 95% of the overlay welding,
Further, the number of revolutions of the work and / or the moving speed of the torch are set to 110% to 200% of those in the overlay welding, and the overlay welding is performed again in the concave portion of the overlay portion. For example, the weight of the alloy powder supplied from the torch per unit time is changed, and this is reduced to, for example, 20% of the overlay welding, and the current amount applied between the work and the torch is changed, for example. For example, it is reduced to 90% in overlay welding, and, for example, the number of revolutions of the workpiece per unit time and the moving speed of the torch are changed, and these are increased to 120% in overlay welding, for example.
【００１１】以上説明した本発明によると、ワークの周
面に肉盛溶接した螺旋状の肉盛部の表面に形成されてい
る凹部を、特定条件下での再肉盛溶接により埋めて、表
面の凹凸を実質的に無くし、表面を平滑化できる。本発
明によると、肉盛及び再肉盛した部材の部位による耐熱
性や耐食性のばらつきを防止できると共に、これと接触
する気体や液体の乱流の発生を防止でき、とりわけ通常
は該部材を折り曲げ加工等で機械加工するが、この際の
割れの発生を防止できるのである。According to the present invention described above, the concave portion formed on the surface of the spiral build-up welded to the peripheral surface of the work is filled by the re-build-up welding under specific conditions to obtain the surface. The unevenness can be substantially eliminated, and the surface can be smoothed. According to the present invention, it is possible to prevent variations in heat resistance and corrosion resistance depending on the parts of the overlaid and re-overlaid member, and to prevent generation of turbulent flow of gas or liquid in contact therewith, and especially to bend the member. Machining is performed by working, etc., but it is possible to prevent cracking at this time.
【００１２】[0012]
【発明の実施の形態】図１は本発明において肉盛溶接の
みを行なった状態を略示する部分断面図である。ＰＴＡ
装置を用い、ワークの回転及びトーチの移動を行ないつ
つ、該ワークと該トーチとの間へ通電してアークを発生
させると共に該トーチから肉盛材料である合金粉末を供
給して、該ワークの周面に肉盛溶接すると、該周面には
螺旋状の肉盛部が形成される。図１はかかる状態を略示
しており、ワークとしての管材１１の外周面に螺旋状の
肉盛部２１が形成されていて、肉盛部２１の隣接する凸
部間には凹部３１が形成されている。FIG. 1 is a partial cross-sectional view schematically showing a state in which only overlay welding is performed in the present invention. PTA
Using the apparatus, while rotating the work and moving the torch, an arc is generated by energizing between the work and the torch, and an alloy powder that is a build-up material is supplied from the torch, When overlay welding is performed on the peripheral surface, a spiral overlay portion is formed on the peripheral surface. FIG. 1 schematically shows such a state, in which a spiral buildup portion 21 is formed on the outer peripheral surface of a pipe material 11 as a work, and a recess 31 is formed between adjacent projections of the buildup portion 21. ing.
【００１３】図２は本発明において更に再肉盛溶接をも
行なった状態を略示する部分断面図である。同じＰＴＡ
装置を用い、引き続きワークの回転及びトーチの移動を
行ないつつ、該ワークと該トーチとの間へ通電してアー
クを発生させると共に該トーチから合金粉末を供給して
肉盛部の凹部に再肉盛溶接するが、この際にいずれも図
１の肉盛溶接時に対し、トーチから単位時間当たり供給
する合金粉末の重量を１０〜５０％にすると共に、１）
ワークと該トーチとの間へ印加する電流量を５０〜９５
％にする、２）該ワークの単位時間当たりの回転数及び
／又は該トーチの移動速度を１１０〜２００％にする、
以上の１）及び２）から選ばれる少なくとも一つの条件
変更を行ない、その他は図１の肉盛溶接時と同じ条件に
して、肉盛部の凹部に再肉盛溶接すると、該凹部に螺旋
状の狭小な再肉盛部が形成され、かかる再肉盛部により
該凹部は埋められ、該肉盛部の表面の凹凸は実質的に無
くなって、平滑化する。図２はかかる状態を略示してお
り、管材１１の外周面に形成されていた螺旋状の肉盛部
２１の凹部３１は狭小な再肉盛部３２で埋められ、肉盛
部２１の表面の凹凸は実質的に無くなって、平滑化され
ている。FIG. 2 is a partial sectional view schematically showing a state in which the overlay welding is further performed in the present invention. Same PTA
Using the device, while continuing to rotate the work and move the torch, energize between the work and the torch to generate an arc and supply alloy powder from the torch to re-catch the recess of the build-up portion. The welding is performed by welding, but in this case, the weight of the alloy powder supplied from the torch per unit time is 10 to 50% as compared with the overlay welding of FIG. 1 and 1).
The amount of current applied between the work and the torch is 50 to 95.
2) The number of rotations of the work per unit time and / or the moving speed of the torch is set to 110 to 200%.
When at least one condition selected from the above 1) and 2) is changed, and the other conditions are the same as those at the time of overlay welding in FIG. 1, when the overlay welding is performed again in the recess of the overlay portion, the recess is spirally formed. A narrow re-buildup portion is formed, and the recessed portion is filled with the re-buildup portion, and the unevenness on the surface of the buildup portion is substantially eliminated and the surface is smoothed. FIG. 2 schematically shows such a state. The concave portion 31 of the spiral build-up portion 21 formed on the outer peripheral surface of the pipe material 11 is filled with the narrow re-buildup portion 32, and the surface of the build-up portion 21 is covered. The unevenness is substantially eliminated and smoothed.
【００１４】[0014]
【実施例】実施例１
図１及び図２について前述した方法にしたがい、ワーク
として外径３８mm×肉厚４mm×長さ６ｍのＳＵＳ３０４
製管材の外周面に、肉盛材料としてＮｉ基合金粉末を、
下記の条件で、肉盛溶接し、更に肉盛溶接した螺旋状の
肉盛部の凹部に再肉盛溶接した。
肉盛溶接：ワークの回転数＝２．５回／分、トーチの移
動速度＝１８mm／分、ワークとトーチとの間への印加電
流値＝２００Ａ、トーチからのＮｉ基合金粉末供給量＝
５０ｇ／分
再肉盛溶接：ワークの回転数及びトーチの移動速度は肉
盛溶接時と同じ、トーチからのＮｉ基合金粉末供給量＝
５ｇ／分、ワークとトーチとの間への印加電流値＝１６
０ＡExample 1 According to the method described above with reference to FIGS. 1 and 2, a SUS304 having an outer diameter of 38 mm, a wall thickness of 4 mm, and a length of 6 m is used as a work.
Ni-based alloy powder as a build-up material on the outer peripheral surface of the pipe manufacturing material
The overlay welding was performed under the following conditions, and the overlay welding was performed again in the concave portion of the spiral overlay portion which was overlay welded. Overlay welding: Work rotation speed = 2.5 times / min, torch moving speed = 18 mm / min, applied current value between work and torch = 200 A, Ni-based alloy powder supply amount from torch =
50 g / min re-buildup welding: the rotation speed of the work and the moving speed of the torch are the same as those at the time of build-up welding, the amount of Ni-based alloy powder supplied from the torch =
5 g / min, applied current value between work and torch = 16
0A
【００１５】実施例２〜５
再肉盛溶接時の条件を表１記載のように変更し、その他
は実施例１の場合と同様にして、肉盛溶接及び再肉盛溶
接を行なった。Examples 2 to 5 The conditions during the overlay welding were changed as shown in Table 1, and the overlay welding and the overlay welding were performed in the same manner as in Example 1 except for the above.
【００１６】比較例１
実施例１の場合と同様にして肉盛溶接した。但し、ここ
では再肉盛溶接は行なわなかった。Comparative Example 1 Overlay welding was carried out in the same manner as in Example 1. However, the overlay welding was not performed here.
【００１７】評価
各例で、肉盛溶接及び再肉盛溶接を行なった部品（但
し、比較例１は肉盛溶接のみを行なった部品）を１０個
づつ作製し、各部品の中央を１８０度折り曲げ加工し
て、折り曲げ部の割れを１０倍の拡大鏡で観察し、次の
基準で評価した。
○：１０個の部品全てについて割れが認められない
×：１０個の部品のうちで１個以上に割れが認められるEvaluation In each of the examples, 10 parts were subjected to build-up welding and re-build-up welding (however, in Comparative Example 1, parts were only built-up welding), 10 pieces were prepared, and the center of each part was 180 degrees. After bending, cracks in the bent portion were observed with a 10 × magnifying glass and evaluated according to the following criteria. ◯: No cracks were found on all 10 parts. X: One or more of 10 parts were cracked.
【００１８】各例の再肉盛溶接時の条件及び評価結果を
表１にまとめて示した。Table 1 shows the conditions and the evaluation results during the overlay welding of each example.
【００１９】[0019]
【表１】 [Table 1]
【００２０】表１において、 印加電流値：ワークとトーチとの間への印加電流値 合金粉末供給量：トーチからのＮｉ基合金粉末供給量In Table 1, Applied current value: Applied current value between work and torch Alloy powder supply: Ni-based alloy powder supply from the torch
【００２１】[0021]
【発明の効果】既に明らかなように、以上説明した本発
明には、粉末肉盛溶接において、表面の凹凸を実質的に
無くし、表面を平滑化した肉盛部とすることができると
いう効果がある。As is apparent from the above, the present invention described above has an effect that the surface unevenness can be substantially eliminated in the powder overlay welding, and the overlay can be a smoothed surface. is there.
【図１】本発明において肉盛溶接のみを行なった途中の
状態を略示する部分断面図。FIG. 1 is a partial cross-sectional view schematically showing a state in which only overlay welding is performed in the present invention.
【図２】本発明において図１の肉盛部の凹部に更に再肉
盛溶接を行なった状態を略示する部分断面図。FIG. 2 is a partial cross-sectional view schematically showing a state where re-buildup welding is further performed in the recess of the build-up portion of FIG. 1 in the present invention.
１１・・管材、２１・・肉盛部、３１・・凹部、３２・
・再肉盛部11 ... Pipe material, 21 ...
・ Rebuild part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 早川 均 愛知県名古屋市港区竜宮町10番地 大同特 殊鋼株式会社築地工場内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hitoshi Hayakawa Daido Special, 10 Ryugucho, Minato-ku, Nagoya City, Aichi Prefecture Special Steel Co., Ltd., Tsukiji Factory
Claims (3)
つつ、該ワークと該トーチとの間へ通電してアークを発
生させると共に該トーチから肉盛材料である金属粉末を
供給して、該ワークの周面に螺旋状の肉盛部を肉盛溶接
した後、該ワークの回転数及び該トーチの移動速度は肉
盛溶接時と同じにし、該合金粉末の供給量を肉盛溶接時
の１０〜５０％にすると共に、該ワークと該トーチとの
間への通電量を肉盛溶接時の５０〜９５％にして、該肉
盛部の凹部に再肉盛溶接し、該肉盛部の表面を平滑化す
ることを特徴とする粉末肉盛溶接における肉盛部の表面
肌改善方法。1. While rotating the work and moving the torch, an electric current is applied between the work and the torch to generate an arc, and a metal powder as a build-up material is supplied from the torch to supply the work. After the build-up welding of the spiral build-up portion on the peripheral surface of the, the rotation speed of the work and the moving speed of the torch are made the same as those at the build-up welding, and the supply amount of the alloy powder is 10 at the time of the build-up welding. 50% to 50%, and the amount of electricity passed between the work and the torch is 50% to 95% of that at the time of overlay welding, re-buildup welding is performed in the concave portion of the overlay portion, A method for improving the surface skin of a weld overlay in powder overlay welding, characterized by smoothing the surface.
つつ、該ワークと該トーチとの間へ通電してアークを発
生させると共に該トーチから肉盛材料である金属粉末を
供給して、該ワークの周面に螺旋状の肉盛部を肉盛溶接
した後、該ワークと該トーチとの間への通電量は肉盛溶
接時と同じにし、該合金粉末の供給量を肉盛溶接時の１
０〜５０％にすると共に、該ワークの回転数及び／又は
該トーチの移動速度を肉盛溶接時の１１０〜２００％に
して、該肉盛部の凹部に再肉盛溶接し、該肉盛部の表面
を平滑化することを特徴とする粉末肉盛溶接における肉
盛部の表面肌改善方法。2. While rotating the work and moving the torch, an electric current is applied between the work and the torch to generate an arc, and a metal powder as a build-up material is supplied from the torch to supply the work. After the build-up welding of the spiral build-up portion on the peripheral surface of the, the amount of electric current between the work and the torch is the same as the build-up welding, and the supply amount of the alloy powder during the build-up welding is 1
0 to 50%, the rotation speed of the work piece and / or the moving speed of the torch is set to 110 to 200% of the overlay welding, and the overlay welding is performed again in the recess of the overlay portion. A method for improving the surface skin of a weld overlay in powder overlay welding, which comprises smoothing the surface of the weld.
つつ、該ワークと該トーチとの間へ通電してアークを発
生させると共に該トーチから肉盛材料である金属粉末を
供給して、該ワークの周面に螺旋状の肉盛部を肉盛溶接
した後、該合金粉末の供給量を肉盛溶接時の１０〜５０
％にすると共に、該ワークと該トーチとの間への通電量
を肉盛溶接時の５０〜９５％にし、また該ワークの回転
数及び／又は該トーチの移動速度を肉盛溶接時の１１０
〜２００％にして、該肉盛部の凹部に再肉盛溶接し、該
肉盛部の表面を平滑化することを特徴とする粉末肉盛溶
接における肉盛部の表面肌改善方法。3. While rotating the work and moving the torch, an electric current is applied between the work and the torch to generate an arc, and a metal powder as a build-up material is supplied from the torch to supply the work. After overlay-welding a spiral build-up portion on the peripheral surface of the alloy, the amount of the alloy powder supplied is 10 to 50 during overlay welding.
%, The amount of electricity passed between the work and the torch is 50 to 95% during overlay welding, and the rotation speed of the work and / or the moving speed of the torch is 110 during overlay welding.
To 200% and re-build-up welding the recesses of the build-up part to smooth the surface of the build-up part, and a method for improving the surface skin of the build-up part in powder build-up welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002090348A JP2003290919A (en) | 2002-03-28 | 2002-03-28 | Method for improving surface of clad-welded part in powder cladding by welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002090348A JP2003290919A (en) | 2002-03-28 | 2002-03-28 | Method for improving surface of clad-welded part in powder cladding by welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003290919A true JP2003290919A (en) | 2003-10-14 |
Family
ID=29235674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002090348A Withdrawn JP2003290919A (en) | 2002-03-28 | 2002-03-28 | Method for improving surface of clad-welded part in powder cladding by welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003290919A (en) |
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|---|---|---|---|---|
| WO2012114242A1 (en) * | 2011-02-22 | 2012-08-30 | Foster Wheeler North America Corp. | Weld overlay structure and a method of providing a weld overlay structure |
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2002
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012114242A1 (en) * | 2011-02-22 | 2012-08-30 | Foster Wheeler North America Corp. | Weld overlay structure and a method of providing a weld overlay structure |
| CN103459076A (en) * | 2011-02-22 | 2013-12-18 | 福斯特惠勒北美有限公司 | Weld overlay structure and a method of providing a weld overlay structure |
| JP2014505598A (en) * | 2011-02-22 | 2014-03-06 | フォスター ホイーラ ノース アメリカ コーポレイション | Overlay welded structure and method for forming overlay welded structure |
| CN104646796A (en) * | 2013-11-20 | 2015-05-27 | 林德福 | Surfacing welding method with low dilution rate |
| JP2016123992A (en) * | 2014-12-26 | 2016-07-11 | 川崎重工業株式会社 | Bent pipeline manufacturing method |
| JP2017146027A (en) * | 2016-02-17 | 2017-08-24 | 三菱日立パワーシステムズ株式会社 | Gasification furnace wall, gasification composite power generation facility having the same and manufacturing method of gasification furnace wall |
| JP2020168642A (en) * | 2019-04-02 | 2020-10-15 | 株式会社神戸製鋼所 | Laminated molding manufacturing method and laminated molding |
| JP7203671B2 (en) | 2019-04-02 | 2023-01-13 | 株式会社神戸製鋼所 | LAMINATED PRODUCT MANUFACTURING METHOD AND LAMINATED MOLDED PRODUCT |
| JP2021067484A (en) * | 2019-10-18 | 2021-04-30 | 三菱パワー株式会社 | Build-up weld crack evaluation method, tubular body manufacturing method, and evaluation material |
| JP7293080B2 (en) | 2019-10-18 | 2023-06-19 | 三菱重工業株式会社 | Overlay weld crack evaluation method, pipe manufacturing method, and evaluation material |
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