JP2621855B2 - Wear-resistant material - Google Patents
Wear-resistant materialInfo
- Publication number
- JP2621855B2 JP2621855B2 JP61018157A JP1815786A JP2621855B2 JP 2621855 B2 JP2621855 B2 JP 2621855B2 JP 61018157 A JP61018157 A JP 61018157A JP 1815786 A JP1815786 A JP 1815786A JP 2621855 B2 JP2621855 B2 JP 2621855B2
- Authority
- JP
- Japan
- Prior art keywords
- wear
- welding
- resistant
- hardness
- present
- 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
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
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
- B23K35/304—Ni as the principal constituent with Cr as the next major constituent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明は各種機械機器他に用いられる耐摩耗部材に関
する。Description: TECHNICAL FIELD [0001] The present invention relates to a wear-resistant member used for various mechanical devices and the like.
従来各種機械機器他の耐摩耗性を必要とする部材には
コバルトを約50％程度含有する通称ステライトと呼ばれ
る合金が肉盛溶接されている。2. Description of the Related Art Conventionally, alloys containing about 50% of cobalt, commonly called stellite, are overlay-welded to various mechanical devices and other members requiring wear resistance.
しかしながら、最近ではCo資源の枯渇、化学プラント
にあってはその反応制御、原子力プラントにあってはそ
の安全性向上の観点から、上記ステライトに代えてNiを
基体とした耐摩耗材が開発されているが、ステライトに
比べてその耐摩耗性は充分ではなかった。However, recently, from the viewpoint of depletion of Co resources, reaction control in chemical plants, and safety improvement in nuclear plants, wear-resistant materials based on Ni instead of stellite have been developed. However, its abrasion resistance was not sufficient as compared with stellite.
更にこれらの耐摩耗材は一般に基体にガス溶接法やア
ーク溶接法により肉盛溶接して使用されているが、溶接
時の変形が大きい、溶着金属への基体からの溶け込みが
多い、また、溶接割れが生じ易いなどの問題があり、特
に薄肉部品の表面にこれらの耐摩耗材を肉盛溶接するこ
とは困難であった。Further, these wear-resistant materials are generally used by overlay welding on a substrate by gas welding or arc welding, but the deformation during welding is large, the penetration of the deposited metal from the substrate is large, and welding cracks are generated. In particular, it is difficult to build-up weld these wear-resistant materials to the surface of a thin-walled part.
本発明の目的は上記した問題点を解消するためになさ
れたもので耐摩耗性に優れかつ肉盛時の溶け込みや変形
の少ない耐摩耗部材を提供することを目的とするもので
ある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a wear-resistant member which is excellent in wear resistance and has little penetration or deformation at the time of overlaying.
本発明は基体に重量パーセントでCr15〜45％,Mo20％
以下、Nb3〜15％残部が実質的にNiよりなる耐摩耗層を
プラズマ粉体肉盛法により形成したことを特徴とする耐
摩耗部材であり、特に粒径10〜200ミクロンの上記Ni合
金を耐摩耗部位にプラズマ粉体肉盛溶接することが好ま
しいというものである。In the present invention, the base material is 15 to 45% by weight of Cr and 20% by weight of Mo.
The following is a wear-resistant member characterized in that a wear-resistant layer consisting of Nb 3 to 15% balance substantially consisting of Ni is formed by a plasma powder overlay method, and particularly the Ni alloy having a particle size of 10 to 200 microns. It is preferred that plasma powder overlay welding be performed on the wear resistant part.
本発明に係るNi合金の組成の限定理由を説明する。 The reasons for limiting the composition of the Ni alloy according to the present invention will be described.
まずCr（クロム）は、耐食性を向上させるのに有効で
あると同時に高温における耐酸化性ならびに硬さを高め
るために必要な成分で組成比が15％未満では、効果が不
充分であり、また45％を越えると粗大な初晶が過度に析
出し所要の特性が低下するからであり、望ましくは、20
〜30％が良い。First, Cr (chromium) is a component that is effective in improving corrosion resistance and at the same time is required to increase oxidation resistance and hardness at high temperatures. If the composition ratio is less than 15%, the effect is insufficient. If it exceeds 45%, coarse primary crystals are excessively precipitated and the required properties are deteriorated.
~ 30% is good.
Nb（ニオブ）はクロムおよびニッケルと結合して、Cr
2Nb等の金属間化合物をつくり硬さを高め、耐摩耗性に
必要な成分で組成比３％未満では効果が不充分でまた、
15％を越えると靭性の低下がみられ機械的強度が損なわ
れるからであり、望ましくは７〜15％が良い。Nb (niobium) combines with chromium and nickel to form Cr
2 An intermetallic compound such as Nb is made to increase the hardness and is a component necessary for wear resistance. If the composition ratio is less than 3%, the effect is insufficient.
If it exceeds 15%, the toughness is reduced and the mechanical strength is impaired, and preferably 7 to 15%.
Mo（モリブデン）は、耐食性の向上ならびに固容体強
化により硬さ、耐摩耗性を向上させるのに必要な成分で
組成比が20％を越えると効果は飽和するとともに靭性の
低下がみられることからこの範囲とした。なお、モリブ
デンの組成範囲は５〜15が望ましい。Mo (molybdenum) is a component necessary to improve hardness and abrasion resistance by improving corrosion resistance and strengthening solid content. If the composition ratio exceeds 20%, the effect saturates and the toughness decreases. This range was set. The composition range of molybdenum is preferably 5 to 15.
しかして、本発明に係るNi基合金は、ニオブの一部を
タンタルで置換してもよい。またモリブデンの一部をタ
ングステンに置換することもできる。さらに溶解時に添
加する脱酸、脱窒剤としてのマンガンやシリコンなどを
含んでいても差支えない。Thus, in the Ni-based alloy according to the present invention, part of niobium may be replaced with tantalum. Molybdenum can be partially replaced with tungsten. Further, manganese and silicon as deoxidizing and denitrifying agents added at the time of dissolution may be contained.
次に粒径10〜200ミクロンの上記Ni合金を摩耗部位に
プラズマ粉体肉盛溶接する理由は、溶着金属への基体か
らの溶け込みを少なくし、また、溶接時の変形を小さく
するためであり、更に溶接割れも生じ難くするためであ
る。Next, the reason why the above-mentioned Ni alloy having a particle size of 10 to 200 microns is welded to the wear portion by plasma powder overlay welding is to reduce penetration from the base into the deposited metal and to reduce deformation during welding. In addition, this is because welding cracks hardly occur.
また、本願発明によれば、基体表面における組成のバ
ラツキが少なくなり、基体の面に、高くかつ均一な硬さ
及び摩耗性を有する耐摩耗性層を形成することができ、
耐摩耗性層における溶接界面から0.5mm地点における硬
さが、450HV以上とすることができる。Further, according to the present invention, the composition variation on the surface of the substrate is reduced, and a wear-resistant layer having high and uniform hardness and abrasion can be formed on the surface of the substrate,
The hardness of the wear-resistant layer at a point 0.5 mm from the weld interface can be 450 HV or more.
［発明の実施例］ 第１表に示す実施例No.1〜３の各原料粉末（粒径45〜
145ミクロン）をSUS316表面に電流90〜110A、溶接速度7
2mm/minの溶接条件で厚さ4mmのプラズマ粉体肉盛溶接し
たものから試験片を採取した。また比較例No.5,6につい
ては外径4mmの溶接棒を用いてSUS316表面にTIG溶接法で
肉盛溶接したものから試験片を採取した。[Embodiments of the Invention] Each raw material powder (particle size of 45 to
145 micron) SUS316 surface with current 90 ~ 110A, welding speed 7
Specimens were obtained from plasma powder overlay welding having a thickness of 4 mm under welding conditions of 2 mm / min. For Comparative Examples Nos. 5 and 6, test specimens were taken from those which were overlay-welded to the surface of SUS316 by TIG welding using a welding rod having an outer diameter of 4 mm.
かくして得た試験片について耐摩耗性はアムスラー型
摩耗試験材により荷重30kg、すべり距離1000m、純水中
で試験後の摩耗量で評価した。結果を第１表に併記し
た。また、肉盛試験片の断面の硬さを測定した結果を第
１図に示した。The abrasion resistance of the test piece thus obtained was evaluated by the amount of abrasion after the test in pure water at a load of 30 kg, a sliding distance of 1000 m and pure water using an Amsler-type abrasion test material. The results are shown in Table 1. FIG. 1 shows the result of measuring the hardness of the cross section of the overlay test piece.
第１表の摩耗量の結果から明らかなように本発明の実
施例１〜３は摩耗量が従来耐摩耗部品として使用されて
いる比較例１のCo基合金と同等であり、耐摩耗性に優れ
ていることが確認された。また、第１図から明らかなよ
うに本発明の実施例１はSUS316基体からの溶け込みが少
ないことが確認された。As is clear from the results of the wear amount in Table 1, the wear amounts of Examples 1 to 3 of the present invention are equivalent to those of the Co-based alloy of Comparative Example 1 conventionally used as a wear-resistant part. It was confirmed that it was excellent. Further, as is apparent from FIG. 1, it was confirmed that Example 1 of the present invention had little penetration from the SUS316 substrate.
〔発明の効果〕 以上の説明から明らかなように本発明に係る耐摩耗部
材は各種機械、機器の耐摩耗部品など工業に有用であ
る。 [Effects of the Invention] As is clear from the above description, the wear-resistant member according to the present invention is useful in industry such as wear-resistant parts of various machines and devices.
また、Coを放出しないため特に原子力あるいは化学プ
ラント等に使用する耐摩耗部材として好適である。Further, since it does not release Co, it is particularly suitable as a wear-resistant member used in nuclear power plants or chemical plants.
第１図は硬さを示す特性図。 FIG. 1 is a characteristic diagram showing hardness.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−207145（ＪＰ，Ａ) 特開 昭58−210142（ＪＰ，Ａ) 特開 昭60−115370（ＪＰ，Ａ) 特開 昭60−166171（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-57-207145 (JP, A) JP-A-58-210142 (JP, A) JP-A-60-115370 (JP, A) JP-A-60-115 166171 (JP, A)
Claims (3)
20％以下,Nb ３〜15％残部が実質的にNiよりなる耐
摩耗性層をプラズマ粉末肉盛溶接法により形成したこと
を特徴とする耐摩耗部材。1. The method according to claim 1, wherein the substrate is composed of 15 to 45% by weight of Cr,
A wear-resistant member characterized in that a wear-resistant layer of 20% or less and Nb of 3 to 15% substantially consisting of Ni is formed by plasma powder overlay welding.
点における硬さが、450HV以上であることを特徴とする
特許請求の範囲第１項記載の耐摩耗部材。2. The wear-resistant member according to claim 1, wherein the hardness of the wear-resistant layer at a point 0.5 mm from the weld interface is 450 HV or more.
をプラズマ粉体肉盛り溶接により形成することを特徴と
する特許請求の範囲第１項記載の耐摩耗部材。3. The wear-resistant member according to claim 1, wherein said wear-resistant layer is formed by welding an alloy having a particle size of 10 to 200 microns by plasma powder overlay welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61018157A JP2621855B2 (en) | 1986-01-31 | 1986-01-31 | Wear-resistant material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61018157A JP2621855B2 (en) | 1986-01-31 | 1986-01-31 | Wear-resistant material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62179890A JPS62179890A (en) | 1987-08-07 |
| JP2621855B2 true JP2621855B2 (en) | 1997-06-18 |
Family
ID=11963773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61018157A Expired - Lifetime JP2621855B2 (en) | 1986-01-31 | 1986-01-31 | Wear-resistant material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2621855B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06170580A (en) * | 1992-12-07 | 1994-06-21 | Kobe Steel Ltd | Powder for powder plasma welding |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4952748A (en) * | 1972-09-22 | 1974-05-22 | ||
| JPS57207145A (en) * | 1981-06-15 | 1982-12-18 | Toshiba Corp | Wear resistant alloy |
| JPS5823454A (en) * | 1981-08-05 | 1983-02-12 | Nec Corp | Inspecting method |
| AU561663B2 (en) * | 1982-05-28 | 1987-05-14 | General Electric Company | Homogeneous superalloy powder mixture for the repair of nickel and cobalt superalloy articles |
| JPS58210142A (en) * | 1982-05-31 | 1983-12-07 | Toshiba Corp | Wear resistant alloy |
| JPS60115370A (en) * | 1983-11-29 | 1985-06-21 | Daido Steel Co Ltd | Powder build-up welding method |
| JPS60166171A (en) * | 1984-02-07 | 1985-08-29 | Daido Steel Co Ltd | Plasma build-up welding |
| JPS60250894A (en) * | 1984-05-28 | 1985-12-11 | Toshiba Corp | Buildup welding rod |
-
1986
- 1986-01-31 JP JP61018157A patent/JP2621855B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62179890A (en) | 1987-08-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |