JPS61186190A - Composite filter rod for building up by welding - Google Patents
Composite filter rod for building up by weldingInfo
- Publication number
- JPS61186190A JPS61186190A JP2594685A JP2594685A JPS61186190A JP S61186190 A JPS61186190 A JP S61186190A JP 2594685 A JP2594685 A JP 2594685A JP 2594685 A JP2594685 A JP 2594685A JP S61186190 A JPS61186190 A JP S61186190A
- Authority
- JP
- Japan
- Prior art keywords
- build
- layer
- filler rod
- powder
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
- B23K35/327—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C comprising refractory compounds, e.g. carbides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、溶接により、金属マトリックスとセラミック
粒子とからなる肉盛層を形成するための溶加棒として使
用される複合焼結棒に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a composite sintered rod used as a filler rod for forming a build-up layer consisting of a metal matrix and ceramic particles by welding.
圧延ロール等のロール類、その他の構造材料を基材とし
、その表面に金属マトリックスとセラミック粒子からな
る複合被覆層（セラミックコーティング）を形成するこ
とは、基材の耐熱性や耐摩耗性等を改善する極めて有効
な方法である。この被覆層の形成方法としては専ら溶射
法が使用されている。溶射法は、マトリックスとなる金
属粉末にセラミック粉末を配合した粉末混合物を溶射材
料とし、これを加熱下に高速度で基材表面に衝突・堆積
させることにより被覆層を形成するものであり、近時溶
射材料として、例えば、炭化珪素（Ｓ ｉ Ｃ） 、タ
ングステン炭化物（ＷＣ）、チタン炭化物（Ｔ ｉ Ｃ
）等の炭化物系セラミック粉末を主体とする複合粉末が
工業的に供給されている。Forming a composite coating layer (ceramic coating) consisting of a metal matrix and ceramic particles on the surface of rolls such as rolling rolls or other structural materials improves the heat resistance, abrasion resistance, etc. of the base material. This is an extremely effective method of improvement. Thermal spraying is exclusively used as a method for forming this coating layer. The thermal spraying method uses a powder mixture of ceramic powder and metal powder as a matrix as a thermal spraying material, and forms a coating layer by impinging and depositing this on the surface of a substrate at high speed under heating. Examples of thermal spray materials include silicon carbide (S i C), tungsten carbide (WC), titanium carbide (T i C
) Composite powders mainly composed of carbide ceramic powders are commercially available.
しかるに、溶射法により形成される被覆層（溶射層）は
、主として基材表面の凹凸に喰い込んで付着しているに
過ぎず、密着強度に乏しく、機械衝撃により剥離し易い
ため、実機使用における安定性や耐久性に問題がある。However, the coating layer (sprayed layer) formed by the thermal spraying method only sticks by digging into the irregularities on the surface of the base material, has poor adhesion strength, and is easily peeled off by mechanical shock, so it is difficult to use in actual equipment. There are problems with stability and durability.
本発明は、上記に鑑み溶射法に代え、溶接により、基材
表面に対する密着強度にすぐれた、セラミックを主体と
する肉盛層を形成するための溶加棒を提供しようとする
ものである。In view of the above, it is an object of the present invention to provide a filler rod for forming a ceramic-based build-up layer with excellent adhesion strength to the surface of a base material by welding instead of the thermal spraying method.
本発明の溶接肉盛用溶加棒は、セラミック粉末とマトリ
ックスを形成するための金属粉末との均一な混合物の焼
結体である点に特徴を有する。The filler rod for weld build-up of the present invention is characterized in that it is a sintered body of a homogeneous mixture of ceramic powder and metal powder for forming a matrix.
本発明の溶加棒を用いて、適当な溶接法、好ましくはタ
ングステン不活性ガスアーク溶接法により、基材の表面
に溶接肉盛を行うと、基材表面に金属とセラミック粒子
とが混在した溶融体が形成され、この溶融体を冷却する
と、金属をマトリックスとしてセラミック粒子が均一に
分散している複合組織を有する肉盛層が得られる。When welding is performed on the surface of a base material using the filler rod of the present invention by an appropriate welding method, preferably a tungsten inert gas arc welding method, a molten metal and ceramic particles are mixed on the surface of the base material. A body is formed, and when this melt is cooled, a build-up layer having a composite structure in which ceramic particles are uniformly dispersed in a metal matrix is obtained.
こうして形成される肉盛層は、溶射層と同等もしくはそ
れ以上の耐摩耗性等を有し、しかも基材表面との境界は
、溶接熱により融着一体化した結合関係を有するので、
溶射層のような単なる付着力に比し、密着強度が高く、
従って機械的衝撃を受けても容易に剥離・毀損が生じる
ことがない。The built-up layer formed in this way has wear resistance equal to or higher than that of the thermal sprayed layer, and the boundary with the base material surface has a bonding relationship that is fused and integrated by welding heat.
The adhesion strength is higher than that of a thermally sprayed layer.
Therefore, even if subjected to mechanical shock, it will not easily peel off or be damaged.
本発明において、焼結体を溶加棒とするのは、形成され
る肉盛層の複合組織を均一なものとするためである。セ
ラミック粉末と金属粉末とからなる溶加棒として、これ
を焼結体とせずに、例えばフラックス入り溶接ワイヤ等
の複合溶接ワイヤと同様の構造、即ちセラミック粉末と
金属粉末との粉末混合物を金属チューブに充填したもの
を溶加棒として使用することも可能ではある。しかし、
そのような溶加棒を使用して溶接肉盛を行う場合は、金
属マトリックス中にセラミック粒子を均一に分布させる
ことが困難であり、得られる肉盛層の複合組織は均質性
に乏しいものとなる。本発明のように溶加棒を焼結体と
することにより、セラミック粒子の分布の均一な肉盛層
が形成される。In the present invention, the reason why the sintered body is used as a filler rod is to make the composite structure of the built-up layer to be uniform. As a filler rod made of ceramic powder and metal powder, instead of making it into a sintered body, it has the same structure as a composite welding wire such as a flux-cored welding wire, that is, a powder mixture of ceramic powder and metal powder is used as a metal tube. It is also possible to use a filled rod as a filler rod. but,
When performing weld build-up using such filler rods, it is difficult to uniformly distribute ceramic particles in the metal matrix, and the composite structure of the resulting build-up layer is likely to have poor homogeneity. Become. By using the filler rod as a sintered body as in the present invention, a built-up layer with a uniform distribution of ceramic particles is formed.
本発明の溶加棒を構成するセラミックとしては、炭化物
系（炭化珪素、タングステン炭化物、クロム炭化物、チ
タン炭化物等）、窒化物系（窒化珪素等）、酸化物系（
ジルコニア、アルミナ等）等、種々のセラミックが目的
とする肉盛層の要求性能に応じて適宜選ばれる。例えば
、製鉄・製鋼用部品（ハースロール、超硬ロール等）の
肉盛層の形成には、炭化珪素（ＳｉＣ）、タングステン
炭化物（ＷＣ）、チタン炭化物（Ｔ ｉ Ｃ）等の炭化
物系セラミックが耐熱性、耐摩耗性等にすぐれている点
から好ましく用いられる。The ceramics constituting the filler rod of the present invention include carbide-based (silicon carbide, tungsten carbide, chromium carbide, titanium carbide, etc.), nitride-based (silicon nitride, etc.), and oxide-based (silicon carbide, etc.).
Various ceramics such as zirconia, alumina, etc.) are appropriately selected depending on the required performance of the intended overlay layer. For example, carbide ceramics such as silicon carbide (SiC), tungsten carbide (WC), and titanium carbide (T i C) are used to form overlay layers on iron and steel manufacturing parts (hearth rolls, carbide rolls, etc.). It is preferably used because of its excellent heat resistance, abrasion resistance, etc.
セラミック粉末の粒径は、０．０１〜３．５μｍ程度で
あればよいが、特に０．０１〜０．１ μｍの微細粉末
を用いる場合には、形成される肉盛層は、層中に分散す
るセラミックの微細粒子により転移の運動が阻止される
ことにより、高い高温圧縮強度を示す。The particle size of the ceramic powder may be about 0.01 to 3.5 μm, but especially when using fine powder of 0.01 to 0.1 μm, the formed build-up layer may be It exhibits high compressive strength at high temperatures because the movement of dislocation is inhibited by the fine particles of dispersed ceramic.
マトリックスを形成するための金属としては、各種耐熱
合金、例えばＣｒ−Ｆｅ系、Ｃｒ −Ｎ １−Ｆｅ系、
Ｃｒ＝Ｎｉ−Ｃｏ−Ｆｅ系耐熱鋼、またはＣｒ−Ｎｉ−
Ｍｏ−Ｃｏ系Ｃｏ基合金等が挙げられる。これらの合金
の具体例として、Ｃｒ−Ｆｅ系では、１１．５〜１４．
ＯＣｒ −Ｆ ｅ耐熱鋼（例えば、ＪＩＳ ＳＣＨｌ
相当材） 、Ｃｒ −Ｎ ｔ−Ｆｅ系では、２０．０〜
２６．ＯＣｒ −１６，０〜２２．ＯＮ ｉ −Ｆｅ耐
熱ｍ（例えば、ＪＩＳ ＳＣＨ２２相当）、Ｃｒ−Ｎ
ｉ−Ｍｏ−Ｆｅ系では、２２．０〜４０．０ Ｃｒ−１
５，０〜４０．ＯＮ ｉ −５〜１５Ｃｏ −Ｆ ｅ耐
熱鋼等が挙げられる。As the metal for forming the matrix, various heat-resistant alloys such as Cr-Fe series, Cr-N1-Fe series,
Cr=Ni-Co-Fe heat-resistant steel, or Cr-Ni-
Examples include Mo-Co based Co-based alloys. As a specific example of these alloys, in the case of Cr-Fe alloys, 11.5 to 14.
OCr-F e heat-resistant steel (for example, JIS SCHL
equivalent material), 20.0~ for Cr-Nt-Fe system
26. OCr -16,0~22. ON i -Fe heat resistance m (e.g. equivalent to JIS SCH22), Cr-N
In the i-Mo-Fe system, 22.0 to 40.0 Cr-1
5,0-40. Examples include ON i -5 to 15Co - Fe heat-resistant steel.
また、Ｃｏ基合金の好ましい具体例として、Ｃｒ：２５
〜６０％、Ｍｏ：０．５〜３％、Ｎｉ：４〜８％、残部
実質的にＣｏからなる合金が挙げられる。その成分組成
の限定理由は次のとおりである。Further, as a preferable specific example of the Co-based alloy, Cr:25
60%, Mo: 0.5 to 3%, Ni: 4 to 8%, and the remainder substantially consists of Co. The reason for limiting the component composition is as follows.
Ｃｒ：耐熱性、耐酸化性の確保に欠かせない元素であり
、充分な耐熱性、耐酸化性を得るためには２５％以上が
必要である。しかし、６０％をこえると、溶接性が悪（
なり、また靭性が低下する。Cr: An essential element for ensuring heat resistance and oxidation resistance, and 25% or more is required to obtain sufficient heat resistance and oxidation resistance. However, if it exceeds 60%, weldability becomes poor (
The toughness also decreases.
ＭＯ：高温圧縮強度を高める効果を有する。高温強度を
十分なものとするには少なくとも０．５％が必要であり
、３％までで十分である。MO: Has the effect of increasing high-temperature compressive strength. At least 0.5% is necessary to obtain sufficient high temperature strength, and up to 3% is sufficient.
Ｎｉ：溶接性および靭性の向上のために、少なくとも４
％を必要とするが、８％をこえるのは、合金の高融点化
の点で好ましくない。Ni: at least 4 to improve weldability and toughness
%, but exceeding 8% is not preferable in terms of increasing the melting point of the alloy.
ＣＯ：高温圧縮強度の確保に不可欠の元素であり、合金
の基本成分として２９〜７０．５％を占める。CO: An essential element for ensuring high-temperature compressive strength, and accounts for 29 to 70.5% as a basic component of the alloy.
本発明の溶加棒は、１種または２種以上のセラミック粉
末とマトリックスとなる金属粉末とを所要の割合で均一
に混合した粉末混合物を所望の形状に成形し焼成するこ
とにより得られる。粉末混金物に対するセラミック粉末
の配合割合は、肉盛層の耐摩耗性や機械的性質等の点か
ら、２０〜８０％、より好ましくは５０〜８０％である
。成形・焼結処理は、焼結合金の一般的製造条件に準じ
て行われる。The filler rod of the present invention is obtained by molding a powder mixture of one or more types of ceramic powder and a metal powder serving as a matrix into a desired shape and firing the mixture in a desired ratio. The blending ratio of the ceramic powder to the powder mixture is 20 to 80%, more preferably 50 to 80%, from the viewpoint of wear resistance and mechanical properties of the built-up layer. The molding and sintering treatments are performed according to general manufacturing conditions for sintered alloys.
焼結体のサイズは任意であるが、直径約４．０〜８．０
鶴程度のものが適当である。The size of the sintered body is arbitrary, but the diameter is about 4.0 to 8.0
Something about the size of a crane is appropriate.
本発明の溶加棒を用いる溶接肉盛は、好ましくはタング
ステン不活性ガスアーク溶接法（Ｔ Ｉ Ｇ溶接法）に
より行われる。溶接条件は、溶加棒として複合焼結棒を
使用する点を除けば、通常の溶接肉盛におけるそれに準
じればよい。Weld build-up using the filler rod of the present invention is preferably performed by tungsten inert gas arc welding (TIG welding). The welding conditions may be the same as those for normal weld overlay, except that a composite sintered rod is used as the filler rod.
叉施炭エニ１
（１）溶加棒の製造
マトリックスとなる金属粉末としてＣｏ基合金粉末（粒
径：２．０μｍ）、およびセラミック粉末として、炭化
珪素粉末（粒径：３．５μｍ）からなる均一な混合物を
カーボン電極モールドに充填し、加圧カニ １５００１
ｑｒ／ｅｅｌ、焼結温度： １４００℃にて焼成し、複
合焼結棒（直径：６．Ｏｍ）を得た。Forging Charcoal Eni 1 (1) Production of filler rod Consists of Co-based alloy powder (particle size: 2.0 μm) as the metal powder serving as the matrix, and silicon carbide powder (particle size: 3.5 μm) as the ceramic powder. The homogeneous mixture was filled into a carbon electrode mold, and the pressure crab 15001
qr/eel, sintering temperature: Sintered at 1400°C to obtain a composite sintered rod (diameter: 6.0m).
また、比較例として、Ｃｏ基合金製パイプ（外径ニア、
Ｏｆｌ、肉厚：０．５鶴）にＣｏ基合金粉末と炭化珪素
との均一な粉末混合物を充填して複合溶加棒を製造した
。In addition, as a comparative example, a Co-based alloy pipe (outer diameter near,
A composite filler rod was manufactured by filling a homogeneous powder mixture of Co-based alloy powder and silicon carbide into a steel tube (ofl, wall thickness: 0.5 mm).
（ｎ）溶接肉盛および肉盛層の品質
各溶加棒を用いてＴＩＧ溶接法（但し、溶接電流：２５
ＯＡ）により、耐熱鋼板材（材質：５ＣＨ２２相当）の
表面に３層の肉盛を行い、層厚７ｆｌの肉盛層を形成し
た。(n) Quality of weld build-up and build-up layer TIG welding method using each filler rod (however, welding current: 25
OA) was used to build up three layers on the surface of a heat-resistant steel plate material (material: equivalent to 5CH22) to form a built-up layer with a layer thickness of 7 fl.
各実施例および比較例の溶加棒の金属粉末成分組成およ
び金属：セラミック配合比、並びに肉盛層の特性を第１
表に示す。The metal powder component composition, metal:ceramic compounding ratio, and properties of the build-up layer of the filler rods of each example and comparative example were
Shown in the table.
実施例に示されるように、本発明溶加棒を用いて形成さ
れた肉盛層はセラミックの配合比に応じた良好な高温強
度を有している。As shown in the examples, the build-up layer formed using the filler rod of the present invention has good high-temperature strength depending on the blending ratio of ceramic.
本発明例における肉盛層は、基材表面と完全に融着一体
化した強固な結合関係を形成しており、その密着強度は
５０００〜７０００ｋｇ／ｃｎｌと溶射法により形成さ
れる被覆層の密着強度（一般に３００〜８００に＋ｒ／
ｃＩａ）に比し、非常にすぐれている。The build-up layer in the example of the present invention forms a strong bond that is completely fused and integrated with the surface of the base material, and the adhesion strength is 5000 to 7000 kg/cnl, and the adhesion of the coating layer formed by thermal spraying is Strength (generally 300-800+r/
cIa).
本発明によれば、従来溶射法でしか形成し得なかったセ
ラミックコーティングをｔ容接による肉盛層として形成
することができる。また、その肉盛層は、セラミック粒
子の分布に偏りがなく、均質性にすぐれているとともに
、基材との界面において融着一体化しており、溶射層に
比し密着強度にすぐれ、実使用において容易に剥離する
ことがない。According to the present invention, a ceramic coating that could conventionally only be formed by thermal spraying can be formed as a built-up layer by t-welding. In addition, the build-up layer has excellent homogeneity with no bias in the distribution of ceramic particles, and is fused and integrated at the interface with the base material, so it has superior adhesion strength compared to a thermal sprayed layer, and is used in actual use. It does not peel off easily.
本発明の溶加棒を用いて形成される肉盛層は、セラミッ
クとマトリックス金属との組合わせにより、耐熱性、耐
摩耗性、耐酸化性等にすぐれているので、圧延用ロール
類、工業炉用部品等の構造部材の耐久性・安定性の向上
に奏効する。The build-up layer formed using the filler rod of the present invention has excellent heat resistance, wear resistance, oxidation resistance, etc. due to the combination of ceramic and matrix metal. Effective in improving the durability and stability of structural members such as furnace parts.
Claims (2)
焼結してなる溶接肉盛用複合溶加棒。(1) A composite filler rod for weld overlay made by sintering a uniform mixed powder of metal powder and ceramic powder.
系、Ｃｒ−Ｎｉ−Ｃｏ−Ｆｅ系、またはＣｒ−Ｎｉ−Ｍ
ｏ−Ｃｏ系合金粉末である上記第（１）項に記載の溶接
肉盛用複合溶加棒。(2) The metal powder is Cr-Fe based, Cr-Ni--Fe
system, Cr-Ni-Co-Fe system, or Cr-Ni-M
The composite filler rod for weld overlay according to item (1) above, which is an o-Co alloy powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2594685A JPS61186190A (en) | 1985-02-13 | 1985-02-13 | Composite filter rod for building up by welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2594685A JPS61186190A (en) | 1985-02-13 | 1985-02-13 | Composite filter rod for building up by welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61186190A true JPS61186190A (en) | 1986-08-19 |
| JPH0418956B2 JPH0418956B2 (en) | 1992-03-30 |
Family
ID=12179919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2594685A Granted JPS61186190A (en) | 1985-02-13 | 1985-02-13 | Composite filter rod for building up by welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61186190A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63260619A (en) * | 1987-04-15 | 1988-10-27 | Kubota Ltd | Side guide member for hot rolling line |
| JPH0191995A (en) * | 1987-09-30 | 1989-04-11 | Tokushu Denkyoku Kk | Welding material |
| JPH0191997A (en) * | 1987-09-30 | 1989-04-11 | Kubota Ltd | Composite build-up electrode |
| JP2015100818A (en) * | 2013-11-26 | 2015-06-04 | 株式会社戸畑製作所 | Abrasion-resistant coating filler rod |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4845450A (en) * | 1971-10-06 | 1973-06-29 | ||
| JPS5776104A (en) * | 1980-10-30 | 1982-05-13 | Nippon Tungsten Co Ltd | Manufacture of hard carbide welding rod |
-
1985
- 1985-02-13 JP JP2594685A patent/JPS61186190A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4845450A (en) * | 1971-10-06 | 1973-06-29 | ||
| JPS5776104A (en) * | 1980-10-30 | 1982-05-13 | Nippon Tungsten Co Ltd | Manufacture of hard carbide welding rod |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63260619A (en) * | 1987-04-15 | 1988-10-27 | Kubota Ltd | Side guide member for hot rolling line |
| JPH0359768B2 (en) * | 1987-04-15 | 1991-09-11 | Kubota Kk | |
| JPH0191995A (en) * | 1987-09-30 | 1989-04-11 | Tokushu Denkyoku Kk | Welding material |
| JPH0191997A (en) * | 1987-09-30 | 1989-04-11 | Kubota Ltd | Composite build-up electrode |
| JP2015100818A (en) * | 2013-11-26 | 2015-06-04 | 株式会社戸畑製作所 | Abrasion-resistant coating filler rod |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0418956B2 (en) | 1992-03-30 |
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