JPH01212746A - Powder material for plasma arc welding - Google Patents
Powder material for plasma arc weldingInfo
- Publication number
- JPH01212746A JPH01212746A JP63038352A JP3835288A JPH01212746A JP H01212746 A JPH01212746 A JP H01212746A JP 63038352 A JP63038352 A JP 63038352A JP 3835288 A JP3835288 A JP 3835288A JP H01212746 A JPH01212746 A JP H01212746A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- powders
- welding
- plasma arc
- granulated
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 61
- 238000003466 welding Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 title claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000005245 sintering Methods 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 239000011230 binding agent Substances 0.000 abstract 2
- 230000005856 abnormality Effects 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は金属加工業界に於て利用されるものであり、主
として各種機械部品、或は機械設備構成部材等の表面に
耐摩耗性、耐蝕性、耐熱性等の特性を付与するための、
特にプラズマアーク肉盛溶接において使用される粉末材
料の改良に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention is used in the metal processing industry, and is mainly used to provide wear resistance and corrosion resistance to the surfaces of various mechanical parts or mechanical equipment constituent members. In order to impart properties such as strength and heat resistance,
In particular, it relates to improvements in powder materials used in plasma arc deposition welding.
（従来の技術）
近年、実用されるようになった粉末そのものを溶接材料
として用いるプラズマアーク粉体肉盛溶接においては、
−船釣には、溶接材料を所期の成分に溶解してアトマイ
ズされた合金粉末を用いている。(Prior art) In plasma arc powder overlay welding, which uses powder itself as a welding material, which has come into practical use in recent years,
- For boat fishing, alloy powder is used, which is atomized by melting the welding material into the desired composition.
また、各種機械部品、或は機械設備部材等に耐摩耗性等
の特性を付与するためには、金属の特性と非金属の特性
を併せもつ複合合金が最近多用されている。 即ち、靭
性の高いニッケル基合金やコバルト基合金等の中に超硬
耐摩耗材である炭化タングステン、炭化ニオビウム、炭
化クロム等の炭化物を分散、含有させることによって高
度の耐摩耗性と靭性を保有せしめた合金がそれである。Furthermore, in order to impart properties such as wear resistance to various mechanical parts or mechanical equipment members, composite alloys having both the properties of metals and those of non-metals have recently been frequently used. That is, by dispersing and containing carbides such as tungsten carbide, niobium carbide, and chromium carbide, which are carbide wear-resistant materials, in highly tough nickel-based alloys and cobalt-based alloys, etc., high wear resistance and toughness are achieved. This is the alloy.
（発明が解決しようとする問題点）
然るに、上記従来技術のうちの前者の場合は、肉盛法の
用途の拡大とともに溶接金属の耐熱性、耐蝕性に関する
要求は高級化、多様化、多目的化してきているため、溶
接材料に関して頻繁な成分調整が必要となる問題があり
、この要求に対応するためにその都度、溶解、及び粉砕
することは時間的、経済的に見て合理的ではない。(Problem to be Solved by the Invention) However, in the case of the former of the above-mentioned conventional techniques, as the application of the overlay method expands, the requirements regarding heat resistance and corrosion resistance of weld metal become more sophisticated, diversified, and multipurpose. As a result, there is a problem in that the welding material requires frequent composition adjustment, and it is not reasonable from a time and economic standpoint to melt and crush it each time to meet this demand.
また、後者のような複合合金は、最早溶解→粉砕という
工程で製造することは困難、或は不可能であり、更にま
た、上記のいづれの場合も、異種の混合粉末材料を何等
かの形で溶接時に溶融池へ投入する必要があるといった
問題がある。In addition, it is difficult or impossible to manufacture composite alloys such as the latter through the process of melting and then pulverizing, and furthermore, in any of the above cases, it is difficult or impossible to manufacture composite alloys by the process of melting and then pulverizing. There is a problem in that it is necessary to pour it into the molten pool during welding.
また、通常、プラズマアーク粉体溶接において混合粉末
を用いると、粉末送給機構内での粉末の分級（ふるい）
作用によって均一な成分の粉末の供給が困難となり、結
果として溶接金属に成分変動が生じ、所期の性能が得ら
れないという重大な問題がある。Additionally, when mixed powder is used in plasma arc powder welding, the powder is classified (sieved) within the powder feeding mechanism.
This action makes it difficult to supply powder with uniform composition, resulting in composition fluctuations in the weld metal, which poses a serious problem in that the desired performance cannot be obtained.
上記の対策として、単純に固着剤を用いて造粒したもの
を用いる方法もあるが、この場合は、通常、その固着剤
自体がスラグ化するものであり、基本的にはプラズマア
ーク粉体溶接法では、スラグの発生は健全な溶接金属の
形成に対して有害であって、時として気孔や割れ等の溶
接欠陥を生ずる。 固着剤の中には、溶接時のアーク熱
で揮発し、スラグを形成しないものもあるが、揮発する
直前には粘着性を帯びるため、時として溶接トーチの粉
末噴出孔付近の送給機構内（ノズル内面等）に粘着した
り、堆積したりして送給を阻害するという難点がある。As a countermeasure to the above, there is a method of simply using a granulated adhesive, but in this case, the adhesive itself usually turns into slag, and basically plasma arc powder welding is used. In the welding process, the generation of slag is detrimental to the formation of sound weld metal and sometimes causes weld defects such as pores and cracks. Some adhesives volatilize with the arc heat during welding and do not form slag, but they become sticky just before they volatilize, so they sometimes form in the feed mechanism near the powder nozzle of the welding torch. It has the disadvantage that it sticks or accumulates on the inside surface of the nozzle (inner surface of the nozzle, etc.) and obstructs feeding.
本発明は、上記の諸問題を解決できるプラズマアーク溶
接用粉末材料を提供することを目的とする。An object of the present invention is to provide a powder material for plasma arc welding that can solve the above problems.
（問題点を解決するための手段）
上記の目的を達成するために、本発明に係るプラズマア
ーク溶接用粉末材料は、異種の金属粉末と金属粉末、ま
たは金属粉末とセラミックス粉末のように、化学成分を
異にする少なくとも２種類以上の粉末を原材料に用いて
これらの粉末を造粒し、更に、その造粒粉末を焼結処理
することによって調製された単位粒体により構成されで
おり、ざらに詳しくは、２種類以上の、金属の混合粉末
、或は金属とセラミックスの混合粉末を有機固着剤を用
いて混線、造粒し、還元性雰囲気内において、構成粉末
の融点のうち、最も低い融点（同相線）下の温度に加熱
することによって固着剤成分を揮発させ、かつ、単位粒
体を構成する粉末粒相互を焼結し、さらに、必要に応じ
て粉砕、分級によって適切な粒度の粉末を調整して構成
されている。(Means for Solving the Problems) In order to achieve the above object, the powder material for plasma arc welding according to the present invention is a powder material for plasma arc welding according to the present invention. It is composed of unit granules prepared by using at least two or more types of powders with different components as raw materials, granulating these powders, and then sintering the granulated powders. In detail, two or more types of mixed powders of metals or mixed powders of metals and ceramics are mixed and granulated using an organic fixing agent, and in a reducing atmosphere, the powder with the lowest melting point of the constituent powders is mixed. By heating to a temperature below the melting point (common phase line), the fixing agent component is volatilized and the powder grains constituting the unit grains are sintered, and if necessary, they are crushed and classified to obtain an appropriate particle size. It is composed of adjusted powder.
なお、本発明で謂うセラミックスとは、炭化物系セラミ
ックス、酸化物系セラミックス、窒化物系セラミックス
、硼化物系セラミックス等を総称するものである。Note that the ceramics referred to in the present invention is a general term for carbide ceramics, oxide ceramics, nitride ceramics, boride ceramics, and the like.
（作 用）
上記のように、本発明に係るプラズマアーク溶接用粉末
材料は、有機固着剤成分が加熱により揮発された結果、
固着剤成分を含まないため、後述する諸効果の達成に役
立つように作用する。(Function) As described above, in the powder material for plasma arc welding according to the present invention, as a result of the organic fixing agent component being volatilized by heating,
Since it does not contain a fixing agent component, it acts to help achieve the various effects described below.
（実 施 例）
その１． 異種の金属粉末から構成される焼結粉末。（
インコネル合金肉盛用粉末）。(Example) Part 1. Sintered powder composed of different metal powders. (
Inconel alloy overlay powder).
表１に示す原材料粉末を有機固着剤で混練、造粒し、還
元性雰囲気において、１，２００℃で７時間加熱した俊
、粒度調整して形成された粉末を表２に示す。Table 2 shows the powders formed by kneading and granulating the raw material powders shown in Table 1 with an organic fixing agent, heating them at 1,200° C. for 7 hours in a reducing atmosphere, and adjusting the particle size.
−以下余白 −
（発明の効果）
本発明は、異種の金属粉末と金属粉末、または金属粉末
とセラミックス粉末の、化学成分を異にする少なくとも
２種類以上の粉末を原材料として用いてこれらの粉末を
造粒し、更に、その造粒粉末を焼結処理することによっ
て調製された単位粒体により構成したことを特徴とする
プラズマアーク溶接用粉末材料に係るものであって、そ
の粉末材料は固着剤を含んでいないので、溶接時にスラ
グを発生せず、溶接欠陥の防止に有効であると共に、固
着剤に起因する送給異常を発生する要因がないので操業
性も安定する効果がある。- The following margins - (Effects of the invention) The present invention uses at least two or more types of powders with different chemical components, such as different metal powders and metal powders, or metal powders and ceramic powders, as raw materials to produce these powders. The present invention relates to a powder material for plasma arc welding, characterized in that it is composed of unit grains prepared by granulating the granulated powder and then sintering the granulated powder, the powder material having a bonding agent. Since it does not contain slag, it does not generate slag during welding, and is effective in preventing welding defects. It also has the effect of stabilizing operability because there is no cause of abnormal feed caused by adhesives.
さらに、単位粒体そのものが所期の化学組成を有してい
るため、供給される粉末の化学成分が変動せず、均一な
化学組成の溶接金属が生成されるという多大な利点がお
り、既述した従来技術の問題点を有効に解決できるもの
である。Furthermore, since the unit grains themselves have the desired chemical composition, the chemical composition of the supplied powder does not vary and weld metal with a uniform chemical composition is produced, which is a great advantage. This can effectively solve the problems of the prior art described above.
Claims (1)
クス粉末のように、化学成分を異にする少なくとも２種
類以上の粉末を原材料に用いてこれらの粉末を造粒し、
更に、その造粒粉末を焼結処理することによつて調製さ
れた単位粒体により構成したことを特徴とするプラズマ
アーク溶接用粉末材料。Granulating these powders using at least two or more types of powders with different chemical components as raw materials, such as different types of metal powder and metal powder, or metal powder and ceramic powder,
Furthermore, a powder material for plasma arc welding, characterized in that it is constituted by unit grains prepared by sintering the granulated powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63038352A JPH01212746A (en) | 1988-02-19 | 1988-02-19 | Powder material for plasma arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63038352A JPH01212746A (en) | 1988-02-19 | 1988-02-19 | Powder material for plasma arc welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01212746A true JPH01212746A (en) | 1989-08-25 |
Family
ID=12522888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63038352A Pending JPH01212746A (en) | 1988-02-19 | 1988-02-19 | Powder material for plasma arc welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01212746A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010167492A (en) * | 2008-12-26 | 2010-08-05 | Aichi Steel Works Ltd | Component for machine structure and method for producing the same |
| CN109368645A (en) * | 2018-12-26 | 2019-02-22 | 吉林大学 | A kind of preparation method of array Z-shaped niobium carbide crystallite |
| CN109437201A (en) * | 2018-12-26 | 2019-03-08 | 吉林大学 | A kind of preparation method of the spherical niobium carbide crystallite of mushroom |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53100935A (en) * | 1977-02-16 | 1978-09-02 | Nippon Tungsten | Preparation of tungstennchromeesilicon alloy powder for melting and injection |
| JPS62136421A (en) * | 1985-12-09 | 1987-06-19 | Tookaro Kk | Hearth roll for continuous annealing furnace |
-
1988
- 1988-02-19 JP JP63038352A patent/JPH01212746A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53100935A (en) * | 1977-02-16 | 1978-09-02 | Nippon Tungsten | Preparation of tungstennchromeesilicon alloy powder for melting and injection |
| JPS62136421A (en) * | 1985-12-09 | 1987-06-19 | Tookaro Kk | Hearth roll for continuous annealing furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010167492A (en) * | 2008-12-26 | 2010-08-05 | Aichi Steel Works Ltd | Component for machine structure and method for producing the same |
| CN109368645A (en) * | 2018-12-26 | 2019-02-22 | 吉林大学 | A kind of preparation method of array Z-shaped niobium carbide crystallite |
| CN109437201A (en) * | 2018-12-26 | 2019-03-08 | 吉林大学 | A kind of preparation method of the spherical niobium carbide crystallite of mushroom |
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