JPH03193274A - Plasma arc welding method - Google Patents
Plasma arc welding methodInfo
- Publication number
- JPH03193274A JPH03193274A JP33198789A JP33198789A JPH03193274A JP H03193274 A JPH03193274 A JP H03193274A JP 33198789 A JP33198789 A JP 33198789A JP 33198789 A JP33198789 A JP 33198789A JP H03193274 A JPH03193274 A JP H03193274A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- powder
- wire
- electric circuit
- arc column
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims description 24
- 239000000843 powder Substances 0.000 claims abstract description 53
- 239000010953 base metal Substances 0.000 claims abstract description 14
- 239000011261 inert gas Substances 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims description 36
- 229910052751 metal Inorganic materials 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 26
- 230000008018 melting Effects 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 abstract description 10
- 239000000956 alloy Substances 0.000 abstract description 10
- 238000007796 conventional method Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、溶接粉末と溶接ワイヤーを溶接材料とし、プ
ラズマアークを熱源として母材上に溶接金属を形成する
ためのプラズマアーク溶接法の改良に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention is an improved plasma arc welding method for forming weld metal on a base material using welding powder and welding wire as welding materials and using plasma arc as a heat source. Regarding.
（従来の技術）
溶接材料に、溶接ワイヤーと溶接粉末を同時に使用して
溶接金属を形成するこの種のプラズマアーク溶接法とし
ては、例えば、特公昭６２−４１８３６号公報に開示さ
れた「複合合金の肉盛溶接方法」が知られている。(Prior Art) As a plasma arc welding method of this type in which a weld metal is formed by simultaneously using a welding wire and a welding powder as a welding material, for example, "composite alloy welding" disclosed in Japanese Patent Publication No. 62-41836 is "Overlay welding method" is known.
この溶接法は、複合合金の肉盛のために使用される方法
であって、炭化物等のセラミックの粉末粒を溶接金属内
に未溶融状態で残存させるための溶接法であり、肉盛溶
接金属の強化粒として添加される炭化物等のセラミック
粉末がアーク柱内を通過する時間を極力短くして、その
溶融を防ぎつつ、溶融ワイヤーの溶融によって生じた溶
融プールに該粉末を投入し、肉盛溶接金属の凝固後に、
その投入セラミック粉末を未溶融のままで肉盛溶接金属
の組織内に残存させることを特徴とする溶接法である。This welding method is used for overlaying composite alloys, and is a welding method that allows ceramic powder particles such as carbides to remain in the weld metal in an unmolten state. Ceramic powder such as carbide, which is added as reinforcing grains, passes through the arc column as short as possible to prevent it from melting, and the powder is poured into the molten pool created by melting the molten wire. After the weld metal solidifies,
This welding method is characterized by allowing the introduced ceramic powder to remain unmelted in the structure of the overlay weld metal.
（発明が解決しようとする課題）
然しながら、上記の溶接法は、一般合金、即ち、金属組
織内にセラミックのような未溶融の成分を含まない金属
のみから成る組織の合金を肉盛形成する場合や、炭化物
を添加して溶融させた復に、凝固時にあらためて析出相
として組織内に分布させるような肉盛法には適していな
い。(Problems to be Solved by the Invention) However, the above-mentioned welding method cannot be used when overlaying a general alloy, that is, an alloy having a structure consisting only of metal that does not contain unmelted components such as ceramics in the metal structure. Also, it is not suitable for overlay methods in which carbide is added and melted, and then distributed within the structure as a precipitated phase during solidification.
一般合金の肉盛溶接に上記の方法を適用しても、投入さ
れる金属粉末の溶融は進まず、溶接金属組織内に未溶融
状態の金属粉末が残存し、組織の均質性が損なわれる。Even when the above method is applied to overlay welding of general alloys, the melting of the introduced metal powder does not progress, and unmelted metal powder remains in the weld metal structure, impairing the homogeneity of the structure.
とくに、ワイヤーと粉末に異種の材質を用い、これらを
溶融池内で融合させて一つの合金にして肉盛層を形成さ
せようとする場合には、肉盛層の化学成分の均質性が損
なわれ、また、炭化物等を一旦溶融させた後に、析出さ
せる場合には、未溶融の炭化物等が組織内に残昭し、い
ずれの場合も本来の耐蝕性や耐摩耗性を低下させる原因
となると言った問題があり、この弊害は肉盛能率を向上
させるために大量の粉末を投入する場合、さらに大きく
なる傾向がある。In particular, when using different materials for wire and powder and trying to fuse them in the molten pool to form a single alloy to form a build-up layer, the homogeneity of the chemical components of the build-up layer may be impaired. Furthermore, if carbides, etc. are melted and then precipitated, unmelted carbides, etc. remain in the structure, and in either case, it is said that it causes a decrease in the original corrosion resistance and wear resistance. This problem tends to become even more serious when a large amount of powder is added to improve the overlay efficiency.
本発明は、上記の問題を解決することを課題として開発
されたプラズマアーク溶接法に係るものである。The present invention relates to a plasma arc welding method developed with the aim of solving the above problems.
（課題を解決するための手段）
上記の課題を解決する手段として、本発明では、非消耗
電極と、溶接電源と、溶接母材とを連結して形成した第
１の電気回路、及び上記非消耗電極と、上記第１の電気
回路とは別の溶接電源と、ワイヤー送給ノズルとを連結
して形成した第２の電気回路とを並列に接続し、第１の
電気回路により非消耗電極と溶接母材との間に発生させ
た、不活性ガスを雰囲気とするアーク柱に粉末送給ノズ
ルを通して不活性ガスにより圧送される溶接粉末を投入
して溶融させると共に、母材表面をも溶融させ、且つ同
時に第２の電気回路によりワイヤー送給ノズルによって
通電される溶接ワイヤーを、上記溶接粉末が上記アーク
柱に投入される位置よりも上方ではない位置において上
記アーク柱に送給し、且つワイヤー先端と上記非消耗電
極との間にアークを発生させつつ該ワイヤーを溶融させ
ることにより溶接母材上に溶接金属を形成するようにし
たプラズマアーク溶接法を開発し、採用した。(Means for Solving the Problems) As a means for solving the above problems, the present invention provides a first electric circuit formed by connecting a non-consumable electrode, a welding power source, and a welding base material, and A consumable electrode, a second electric circuit formed by connecting a welding power source different from the first electric circuit, and a wire feeding nozzle are connected in parallel, and the non-consumable electrode is connected by the first electric circuit. Welding powder, which is pumped by inert gas through a powder feeding nozzle, is fed into an arc column with an inert gas atmosphere generated between the welding base metal and the welding base metal, and melts the welding powder, which also melts the base metal surface. and simultaneously feeding a welding wire energized by a wire feeding nozzle to the arc column at a position that is not above a position where the welding powder is introduced into the arc column, and A plasma arc welding method was developed and adopted in which weld metal is formed on the weld base material by melting the wire while generating an arc between the tip of the wire and the non-consumable electrode.
（作 用）
本発明では、溶接粉末のアーク柱への投入位置を、溶接
ワイヤーのアーク柱への投入位置よりも低くない位置に
設定したので、該溶接粉末がアーク柱内を通過する時間
は、既述した従来法の場合よりも増加され、したがって
溶接粉末を十分に溶融して、完全に溶融した均質な溶接
金属（合金）を形成する作用がある。(Function) In the present invention, the position at which welding powder is introduced into the arc column is set at a position that is not lower than the position at which welding wire is introduced into the arc column, so the time it takes for the welding powder to pass through the arc column is reduced. , is increased compared to the case of the conventional method described above, and therefore has the effect of sufficiently melting the welding powder to form a completely molten and homogeneous weld metal (alloy).
（実施例）
以下に、本発明の実施例を図示のプラズマアーク溶接装
置に基づいて説明する。 図面は本発明を実施する際に
使用する溶接トーチＴと、後述する各部材を溶接電源１
及び２に結線接続した第１の電気回路Ａ及び第２の電気
回路Ｂから成るプラズマアーク溶接装置の概略図であっ
て、図において、３は非消耗電極、４はプラズマアーク
収束ノズル、５は溶接粉末送給ノズル、６は溶接母材、
７はプラズマガス流、８は溶接粉末９の搬送ガス流、１
０は溶接ワイヤー、１１は溶接ワイヤー送給機、１２は
溶接ワイヤー送給ノズル、１３はプラズマアーク柱、１
４はシールドガス送給ノズル、１５はシールドガス流、
１６は溶融金属池、１７は溶接金属を夫々示しており、
このラズマアーク溶接装置では、プラズマアーク柱１３
内に溶接粉末９を送給投入する送給ノズル５の開口部５
ａの位置を溶接ワイヤー１０の送給位置よりも高い位置
、即ち、この実施例では、溶接金属粉末の投入位置をプ
ラズマアーク収束ノズル４の直下に配置して、プラズマ
アーク柱１３の略全長に亘り粉末を通過させて粉末の溶
融を最大限に進行させるようにしである。また、第１の
電気回路Ａは非消耗電極３と、溶接電源１と、溶接母材
６とを結線接続した１系統の回路で構成されており、第
２の電気回路Ｂは非消耗電極３と、溶接電源２と、溶接
ワイヤー送給ノズル１２とを結線接続した１系統以上の
回路で構成されており、これらの両電気回路Ａ及びＢは
並列に接続しである。(Example) Examples of the present invention will be described below based on the illustrated plasma arc welding apparatus. The drawings show a welding torch T used in carrying out the present invention and each member described later in a welding power source 1.
FIG. 2 is a schematic diagram of a plasma arc welding apparatus comprising a first electric circuit A and a second electric circuit B connected to each other, in which 3 is a non-consumable electrode, 4 is a plasma arc convergence nozzle, and 5 is a plasma arc convergence nozzle. Welding powder feeding nozzle, 6 is welding base material,
7 is a plasma gas flow, 8 is a carrier gas flow for welding powder 9, 1
0 is a welding wire, 11 is a welding wire feeder, 12 is a welding wire feeding nozzle, 13 is a plasma arc column, 1
4 is a shielding gas supply nozzle, 15 is a shielding gas flow,
16 indicates a molten metal pool, 17 indicates a weld metal,
In this plasma arc welding device, the plasma arc column 13
An opening 5 of a feed nozzle 5 into which welding powder 9 is fed and thrown.
The position a is located at a higher position than the feeding position of the welding wire 10, that is, in this embodiment, the weld metal powder input position is located directly below the plasma arc convergence nozzle 4, so that the welding metal powder is placed at a position directly below the plasma arc convergence nozzle 4, so that the welding metal powder is placed at a position that is higher than the feeding position of the welding wire 10. The powder is passed through the tube to maximize melting of the powder. Further, the first electric circuit A is constituted by one circuit in which the non-consumable electrode 3, the welding power source 1, and the welding base material 6 are wired and connected, and the second electric circuit B is constituted by the non-consumable electrode 3. , a welding power source 2, and a welding wire feeding nozzle 12 are connected by one or more circuits, and both electric circuits A and B are connected in parallel.
また、この実施例では、溶接時に母材上に形成される溶
融金属地１６を不活性ガスのシールドガス流１５で被覆
して、溶融金属を大気から遮断保護する方法が採用され
ている。Further, in this embodiment, a method is adopted in which the molten metal base 16 formed on the base metal during welding is covered with a shielding gas flow 15 of an inert gas to shield and protect the molten metal from the atmosphere.
次に、上記のように構成したプラズマアーク溶接装置を
用いて、１０％鋼を含有するキュプロニッケルの肉盛溶
接を行なった場合の実施例について説明する。Next, an example will be described in which overlay welding of cupronickel containing 10% steel is performed using the plasma arc welding apparatus configured as described above.
溶接ワイヤーとして、化学成分が、重量％で、ｃｏ、ｏ
ａ％、Ｓｉ ０．７％、Ｍｌｌｏ、８％、Ｆｅ ０．５
％、残Ｎｉの溶接用ニッケル線材を使用し、溶接粉末と
して、純度９９．８％の銅粉末を使用し、表１−１及び
表１−２に示す条件にしたがって肉盛溶接を行ない、ま
た、前記の従来法（特公昭６２−４１８３６号公報記載
の溶接法）により、上記と同一の材料と条件によって溶
接試験を行なった。 アーク雰囲気ガス、シールドガス
及び溶接粉末搬送ガスには溶接用アルゴンガスを用いた
。As a welding wire, the chemical composition is co, o in weight%.
a%, Si 0.7%, Mllo, 8%, Fe 0.5
%, residual Ni, copper powder with a purity of 99.8% was used as the welding powder, and overlay welding was performed according to the conditions shown in Table 1-1 and Table 1-2. A welding test was conducted using the same materials and conditions as above using the conventional method described above (the welding method described in Japanese Patent Publication No. 62-41836). Argon gas for welding was used as arc atmosphere gas, shielding gas, and welding powder carrier gas.
その試験結果を対比して表２に示す。 表２に見られる
ように、従来法の場合は、３．８％の未溶融の残存金属
粉末があるのに対して、本発明の溶接法によれば、溶接
金属中に未溶融の残存金属粉末は全くなく、健全な溶接
状態を示していることが判る。 この場合の未溶融粉末
の残存量は、母材より４ｒｒＩＩｒＩの高さにおける切
削肉盛金属面について、組織写真から点算法によって計
測した数値である。また、従来法と同様に、母材成分に
稀釈も少なく、Ｆｅ量は３％台に留まっている。The test results are shown in Table 2 in comparison. As seen in Table 2, in the case of the conventional method, there is 3.8% of unmelted residual metal powder, whereas according to the welding method of the present invention, unmelted residual metal powder is present in the weld metal. It can be seen that there is no powder at all, indicating a sound welding condition. The remaining amount of unmelted powder in this case is a value measured by the dot counting method from a microstructure photograph of the cut overlay metal surface at a height of 4rrIIrI from the base material. Also, like the conventional method, there is little dilution in the base material components, and the amount of Fe remains in the 3% range.
以下余白 −
立上ヨー
表１−２
なお、上記の実施例では、１系統のワイヤー送給機構及
びワイヤー通電機構を例示したが、必要であれば、１系
統以上のものであってもよい。Margin below - Start-up Yaw Table 1-2 In the above embodiment, one system of wire feeding mechanism and wire energizing mechanism was illustrated, but if necessary, one system or more may be used.
（発明の効果）
本発明は、非消耗電極と、溶接電源と、溶接母材とを連
結して形成した第１の電気回路、及び上記非消耗電極と
、上記第１の電気回路とは別の溶接電源と、ワイヤー送
給ノズルとを連結して形成した第２の電気回路とを並列
に接続し、第１の電気回路により非消耗電極と溶接母材
との間に発生させた、不活性ガスを雰囲気とするアーク
柱に粉末送給ノズルを通して不活性ガスにより圧送され
る溶接粉末を投入して溶融させると共に、母材表面をも
溶融させ、且つ同時に第２の電気回路によりワイヤー送
給ノズルによって通電される溶接ワイヤーを、上記溶接
粉末が上記アーク柱に投入される位置よりも上方ではな
い位置において上記アーク柱に送給し、且つワイヤー先
端と上記非消耗電極との間にアークを発生させつつ該ワ
イヤーを溶融させることにより溶接母材上に溶接金属を
形成することを特徴とするプラズマアーク溶接法に係る
ものであるから、本発明によれば、次のような優れた効
果を奏するものである。(Effects of the Invention) The present invention provides a first electrical circuit formed by connecting a non-consumable electrode, a welding power source, and a welding base material, and a separate electrical circuit between the non-consumable electrode and the first electrical circuit. A second electrical circuit formed by connecting a welding power source and a wire feeding nozzle is connected in parallel, and the non-consumable electrode generated between the non-consumable electrode and the welding base material is removed by the first electrical circuit. Welding powder, which is pumped by an inert gas through a powder feeding nozzle, is introduced into an arc column with an active gas atmosphere and melted, and the surface of the base material is also melted, and at the same time, the wire is fed by a second electric circuit. A welding wire energized by a nozzle is fed to the arc column at a position not above the position where the welding powder is introduced into the arc column, and an arc is caused between the tip of the wire and the non-consumable electrode. Since the present invention relates to a plasma arc welding method characterized in that a weld metal is formed on a weld base material by melting the wire while generating It is something to play.
（１）金属溶接粉末の投入位置を溶接ワイヤーの送給位
置よりも上方に位置させたので、従来法の場合よりもア
ーク柱内を粉末が通過する時間を増加させ得て、粉末が
完全に溶融した均質で良好な溶接合金が得られる。(1) Since the injection position of the metal welding powder is located above the welding wire feeding position, the time for the powder to pass through the arc column can be increased compared to the conventional method, and the powder is completely A molten homogeneous and good welding alloy is obtained.
（２）第２の電気回路による溶接ワイヤーから発生した
アークは非消耗電極との間に点弧されるので、母材の溶
融は第１の電気回路によるプラズマアークのみに依存す
ることになり、したがって溶接材料の溶融量当りの母材
入熱は小さく、溶込み率、即ち、母材成分による溶接金
属の稀釈率を低減できる。(2) Since the arc generated from the welding wire by the second electric circuit is ignited between the welding wire and the non-consumable electrode, the melting of the base material depends only on the plasma arc generated by the first electric circuit; Therefore, the base metal heat input per melting amount of the welding material is small, and the penetration rate, that is, the dilution rate of the weld metal by the base metal components can be reduced.
（３）供給する粉末の組成を変えることによって、溶接
金属の組成を自由に調整できる。(3) By changing the composition of the supplied powder, the composition of the weld metal can be freely adjusted.
図面は本発明を実施するために使用するプラズマアーク
溶接装置の一例を示す一部縦断概略正面図である。
（符号の説明）
１・２・・・溶接電源、
３・・・非消耗電極、
４・・・プラズマアーク収束ノズル、
５・・・粉末送給ノズル、
６・・・溶接母材、
９・・・溶接粉末、
１０・・・溶接ワイヤー
１２・・・ワイヤー送給ノズル、
１３・・・プラズマアーク柱、
１６・・・溶融金属池、
１７・・・溶接金属、
Ａ・・・第１の電気回路、
Ｂ・・・第２の電気回路。
（符号の説明）
１・２・・・溶接電源、
３・・・非消耗電極、
４・・・プラズマアーク収束ノズル、
５・・・粉末送給ノズル、
６・・・溶接母材、
９・・・溶接粉末、
１０・・・溶接ワイヤー
１２・・・ワイヤー送給ノズル、
１３・・・プラズマアーク柱、
１６・・・溶融金属池、
１７・・・溶接金属、
Ａ・・・第１の電気回路、
Ｂ・・・第２の電気回路。
手続補正書（自発）
１、事件の表示
平成１年特許願第３３１９８７＠
２、発明の名称
プラズマアーク溶接法
３、補正をする者
事件との関係 特許出願人
住所
兵庫県尼崎市昭和通２丁目２番２７号
４、代理人〒５５０
住 所 大阪市西区西本町１丁目７番２１号明細書
の「特許請求の範囲」の欄
６、補正の内容
別紙添付のとおり
補正の内容
明細書の特許請求の範囲の記載内容に誤記がありました
ので、明細書の第５頁１〜１７行目の記載に基づき、特
許請求の範囲を下記のとおり補正します。
記
［（１）非消耗電極と、溶接電源と、溶接母材とを連結
して形成した第１の電気回路、及び上記非消耗電極と、
上記第１の電気回路とは別の溶接電源と、ワイヤー送給
ノズルとを連結して形成した第２の電気回路とを並列に
接続し、第１の電気回路により非消耗電極と溶接母材と
の間に発生させた、不活性ガスを雰囲気とするアーク柱
に粉末送給ノズルを通して不活性ガスにより圧送される
溶接粉末を投入して溶融させると共に、母材表面をも溶
融させ、且つ同時に第２の電気回路によりワイヤー送給
ノズルによって通電される溶接ワイヤーｅ、上記溶接粉
末が上記アーク柱に投入ざれる位置よりも上方ではない
位置において上記アーク柱に送給し、且つワイヤー先端
と上記非消耗電極との間にアークを発生させつつ該ワイ
ヤーを溶融させることにより溶接母材上に溶接金属を形
成することを特徴とするプラズマアーク溶接法。
（２）溶接母材上に溶接金属を形成する際に、母材上の
溶融金属池を不活性ガスのシールドガス流で被覆した状
態で施工することを特徴とする請求項（１）に記載のプ
ラズマアーク溶接法。」The drawing is a partially vertical schematic front view showing an example of a plasma arc welding device used to carry out the present invention. (Explanation of symbols) 1.2... Welding power source, 3... Non-consumable electrode, 4... Plasma arc convergence nozzle, 5... Powder feeding nozzle, 6... Welding base material, 9. ... Welding powder, 10... Welding wire 12... Wire feeding nozzle, 13... Plasma arc column, 16... Molten metal pool, 17... Welding metal, A... First Electric circuit, B...Second electric circuit. (Explanation of symbols) 1.2... Welding power source, 3... Non-consumable electrode, 4... Plasma arc convergence nozzle, 5... Powder feeding nozzle, 6... Welding base material, 9. ... Welding powder, 10... Welding wire 12... Wire feeding nozzle, 13... Plasma arc column, 16... Molten metal pool, 17... Welding metal, A... First Electric circuit, B...Second electric circuit. Procedural amendment (voluntary) 1. Indication of the case 1999 Patent Application No. 331987 @ 2. Name of the invention Plasma arc welding method 3. Person making the amendment Relationship to the case Patent applicant address 2-chome Showadori, Amagasaki City, Hyogo Prefecture 2-27-4, Agent Address: 550 Address: 1-7-21 Nishihonmachi, Nishi-ku, Osaka City, "Claims" column 6 of the specification, Contents of the amendments Patent for the description of the contents of the amendments as attached in the attached sheet There was an error in the content of the claims, so we will amend the claims as follows based on the statement on page 5, lines 1 to 17 of the specification. [(1) A first electric circuit formed by connecting a non-consumable electrode, a welding power source, and a welding base material, and the non-consumable electrode,
A welding power source different from the first electric circuit and a second electric circuit formed by connecting a wire feeding nozzle are connected in parallel, and the first electric circuit connects the non-consumable electrode to the welding base material. The welding powder, which is pumped by the inert gas through the powder feeding nozzle, is introduced into the arc column with an inert gas atmosphere generated between the A welding wire e energized by a wire feeding nozzle by a second electric circuit is fed to the arc column at a position that is not above the position where the welding powder is thrown into the arc column, and is connected to the tip of the wire and the above. A plasma arc welding method characterized by forming weld metal on a welding base material by melting the wire while generating an arc between the wire and a non-consumable electrode. (2) The method according to claim (1), characterized in that when forming the weld metal on the weld base metal, the weld metal pool on the base metal is covered with a shielding gas flow of an inert gas. plasma arc welding method. ”
Claims (2)
て形成した第１の電気回路、及び上記非消耗電極と、上
記第１の電気回路とは別の溶接電源と、ワイヤー送給ノ
ズルとを連結して形成した第２の電気回路とを並列に接
続し、第１の電気回路により非消耗電極と溶接母材との
間に発生させた、不活性ガスを雰囲気とするアーク柱に
粉末送給ノズルを通して不活性ガスにより圧送される溶
接粉末を投入して溶融させると共に、母材表面をも溶融
させ、且つ同時に第２の電気回路によりワイヤー送給ノ
ズルによつて通電される溶接ワイヤー、上記溶接粉末が
上記アーク柱に投入される位置よりも上方ではない位置
において上記アーク柱に送給し、且つワイヤー先端と上
記非消耗電極との間にアークを発生させつつ該ワイヤー
を溶融させることにより溶接母材上に溶接金属を形成す
ることを特徴とするプラズマアーク溶接法。(1) A first electric circuit formed by connecting a non-consumable electrode, a welding power source, and a welding base material, and a welding power source different from the non-consumable electrode, the first electric circuit, and a wire. A second electrical circuit formed by connecting the feeding nozzle is connected in parallel, and an atmosphere is an inert gas generated between the non-consumable electrode and the welding base material by the first electrical circuit. Welding powder, which is pumped by an inert gas through a powder feeding nozzle, is introduced into the arc column and melted, and the surface of the base material is also melted, and at the same time, electricity is energized by a wire feeding nozzle through a second electric circuit. a welding wire, the wire being fed to the arc column at a position not above the position where the welding powder is introduced into the arc column, and generating an arc between the tip of the wire and the non-consumable electrode; A plasma arc welding method characterized by forming weld metal on a weld base material by melting.
溶融金属池を不活性ガスのシールドガス流で被覆した状
態で施工することを特徴とする請求項（１）に記載のプ
ラズマアーク溶接法。(2) The method according to claim (1), characterized in that when forming the weld metal on the weld base metal, the weld metal pool on the base metal is covered with a shielding gas flow of an inert gas. plasma arc welding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33198789A JPH0641039B2 (en) | 1989-12-20 | 1989-12-20 | Plasma arc welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33198789A JPH0641039B2 (en) | 1989-12-20 | 1989-12-20 | Plasma arc welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03193274A true JPH03193274A (en) | 1991-08-23 |
| JPH0641039B2 JPH0641039B2 (en) | 1994-06-01 |
Family
ID=18249877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33198789A Expired - Fee Related JPH0641039B2 (en) | 1989-12-20 | 1989-12-20 | Plasma arc welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641039B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010013698A (en) * | 2008-07-03 | 2010-01-21 | Sumitomo Metal Ind Ltd | Member for conveying high temperature material |
| JP2014140872A (en) * | 2013-01-24 | 2014-08-07 | Honda Motor Co Ltd | Arc welding method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5649942B2 (en) * | 2010-12-10 | 2015-01-07 | 株式会社フジエンジニアリング | Plasma spraying equipment |
| JP5960229B2 (en) * | 2014-11-07 | 2016-08-02 | 株式会社フジエンジニアリング | Plasma spraying equipment |
-
1989
- 1989-12-20 JP JP33198789A patent/JPH0641039B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010013698A (en) * | 2008-07-03 | 2010-01-21 | Sumitomo Metal Ind Ltd | Member for conveying high temperature material |
| JP2014140872A (en) * | 2013-01-24 | 2014-08-07 | Honda Motor Co Ltd | Arc welding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0641039B2 (en) | 1994-06-01 |
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