JP2645764B2 - Slide bearing device - Google Patents
Slide bearing deviceInfo
- Publication number
- JP2645764B2 JP2645764B2 JP3151678A JP15167891A JP2645764B2 JP 2645764 B2 JP2645764 B2 JP 2645764B2 JP 3151678 A JP3151678 A JP 3151678A JP 15167891 A JP15167891 A JP 15167891A JP 2645764 B2 JP2645764 B2 JP 2645764B2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- sleeve
- bearing
- carbide
- matrix
- 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 - Fee Related
Links
Landscapes
- Sliding-Contact Bearings (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、立軸ポンプの軸受など
に用いられるすべり軸受装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding bearing device used for a bearing of a vertical pump.
【０００２】[0002]
【従来の技術】立軸ポンプの軸受として使用されるすべ
り軸受装置は、軸受本体側の摺動部材にゴムを用いたも
のが一般的であった。しかし、潤滑に清水を用いないも
の、たとえば自揚水であるスラリー水を潤滑に利用する
ものでは、上記摺動部材に耐磨耗性が要求され、またス
ラリー水が腐食性の液であるときには耐蝕性が要求され
る。このような事情の下で、従来は、耐磨耗性と耐蝕性
の両方に優れる炭化珪素（ＳｉＣ）のようなセラミック
スが用いられていた。その一方で、例えば特公昭４７−
３４５７８号公報などにみられるように、摺動部材やス
リーブに、Ｎｉ基やＣｏ基合金からなるマトリックスに
タングステンカーバイドなどの炭化系金属を含有する超
硬合金を溶接肉盛したものもあった。2. Description of the Related Art Generally, a sliding bearing device used as a bearing of a vertical shaft pump uses rubber as a sliding member on a bearing body side. However, in the case where fresh water is not used for lubrication, for example, in which slurry water, which is self-lifting water, is used for lubrication, the sliding member is required to have abrasion resistance, and when the slurry water is a corrosive liquid, corrosion resistance is required. Is required. Under such circumstances, conventionally, ceramics such as silicon carbide (SiC) which is excellent in both abrasion resistance and corrosion resistance have been used. On the other hand, for example,
As disclosed in Japanese Patent No. 34578, etc., there is a sliding member or sleeve in which a cemented carbide containing a carbide-based metal such as tungsten carbide in a matrix made of a Ni-based or Co-based alloy is welded .
【０００３】[0003]
【発明が解決しようとする課題】ところが、前者におい
ては、セラミックスを上記摺動部材の相手方である軸側
のスリーブに用いると、軸材料とセラミックスとの熱膨
張率の相違やセラミックス特有の靱性の影響などでスリ
ーブに亀裂や欠損を生じるおそれがある。However, in the former case, when ceramic is used for the sleeve on the shaft side, which is the other side of the sliding member, the difference in the coefficient of thermal expansion between the shaft material and the ceramic and the toughness specific to ceramics There is a possibility that the sleeve may crack or break due to the influence.
【０００４】また、後者においては、肉盛層となるマト
リックスを形成するＮｉ基やＣｏ基合金の比重とタング
ステンカーバイドなどの炭化系金属の比重が異なるため
に、比重の大きい炭化系金属が沈殿しやすくて溶接によ
る肉盛層の形成が困難になるばかりでなく、溶接時に炭
化系金属の成分がＮｉ基やＣｏ基合金に溶け込み、耐蝕
性の低下を招くことになるため、腐食性のスラリー水を
潤滑に利用する軸受装置ではその耐蝕性に問題がある。In the latter case, the specific gravity of a Ni-based or Co-based alloy forming a matrix to be a build-up layer is different from the specific gravity of a carbide-based metal such as tungsten carbide.
In addition, carbonized metal with high specific gravity tends to precipitate,
Not only is it difficult to form a hardfacing layer,
Metal component dissolves in Ni-base and Co-base alloys
Since that will lead to a decrease in sexual, there is a problem in the corrosion resistance in a bearing apparatus utilizing corrosive slurry water lubrication.
【０００５】本発明は以上の問題や事情に鑑みてなされ
たもので、摺動部材においては勿論、軸側のスリーブに
おいても亀裂や欠損を生じにくく、しかも、安定した耐
磨耗性および耐蝕性を発揮させることができるすべり軸
受装置を提供することを目的とする。The present invention has been made in view of the above problems and circumstances, and it is difficult for cracks or breakage to occur not only in the sliding member but also in the sleeve on the shaft side, and furthermore , it has stable abrasion resistance and corrosion resistance. It is an object of the present invention to provide a sliding bearing device capable of exhibiting the following.
【０００６】[0006]
【課題を解決するための手段】請求項１のすべり軸受装
置は、軸に外嵌されるスリーブとこのスリーブが摺動す
る軸受本体側の摺動部材とのうち少なくとも一方に、Ｔ
ｉ系マトリックスに炭化系金属を２０〜６０ｖｏｌ％含
有する合金の粉体プラズマ溶接による肉盛層が形成され
ていることを特徴とする。According to a first aspect of the present invention, at least one of a sleeve externally fitted to a shaft and a sliding member on the bearing body side on which the sleeve slides is provided with a sliding bearing.
It is characterized in that a buildup layer is formed by powder plasma welding of an alloy containing 20 to 60 vol% of a carbonized metal in an i-based matrix.
【０００７】請求項２のすべり軸受装置は、軸に外嵌さ
れるスリーブとこのスリーブが摺動する軸受本体側の摺
動部材とのうち少なくとも一方に、Ｔｉ系マトリックス
に硼化系金属を含有する合金の粉体プラズマ溶接による
肉盛層が形成されていることを特徴とする。According to a second aspect of the present invention, at least one of a sleeve externally fitted to the shaft and a sliding member on the bearing body side on which the sleeve slides contains a boride-based metal in a Ti-based matrix. A cladding layer is formed by powder plasma welding of the alloy to be formed.
【０００８】[0008]
【作用】請求項１の発明において、Ｔｉ系マトリックス
に炭化系金属を含有させた合金は、もともと従来のＮｉ
基やＣｏ基合金をマトリックスとする合金よりも耐蝕性
に優れ、また、同等の耐磨耗性を有するが、ここで、Ｔ
ｉ系マトリックスへの炭化系金属の含有率を２０〜６０
ｖｏｌ％に設定することで、耐磨耗性、耐蝕性を共に十
分に満足させつつ、溶接肉盛後に表面に亀裂などの異常
の発生もなくすることが可能である。そのうえ、耐蝕性
の向上に有効なＴｉ含有率の高いＴｉ系マトリックスの
比重は小さく、耐磨耗性を保つのに有効な炭化系金属の
比重に比べて大きな差があるために、これを単なる溶接
により肉盛したのでは、その溶接時に比重の大きい炭化
系金属が沈殿して溶接肉盛自体が困難になるのみなら
ず、仮に溶接肉盛できたとしても、炭化系金属がマトリ
ックス中に均一に含有されないことになるが、請求項１
の発明では、比重に大きな差がある両者の混合粉体のプ
ラズマ肉盛溶接技術を採用することにより、肉盛層の形
成が容易になるとともに、炭化系金属をマトリックス中
に均一に含有させて安定した耐磨耗性および耐蝕性を発
揮させることが可能となる。特に、腐食性スラリー水を
潤滑に利用するような立軸ポンプなどの回転体の軸受に
有効に用いることができる。 [Action] In the invention of claim 1, the alloy which contains carbide-based metal Ti based matrix originally conventional Ni
Excellent group or Co-based alloy corrosion resistance than alloy matrix, also have comparable wear resistance, wherein, T
The content of the carbonized metal in the i-based matrix is 20 to 60.
By setting it to vol%, both abrasion resistance and corrosion resistance are sufficient.
Abnormalities such as cracks on the surface after welding overlay while satisfying
Can be eliminated. Moreover, corrosion resistance
Of Ti-based matrix with high Ti content effective to improve
Specific gravity is small, and it is effective to maintain wear resistance.
Since there is a large difference compared to the specific gravity,
The carbonization with a large specific gravity during welding.
If the base metal precipitates and the welding overlay itself becomes difficult,
However, even if the weld overlay could be
Although it will not be uniformly contained in the box, claim 1
In the invention of the present invention, the mixed powder powder having a large difference in specific gravity is used.
By adopting the plasma overlay welding technology,
Facilitates the formation of carbonized metals in the matrix
To provide stable wear and corrosion resistance
It is possible to conduct. Especially for bearings of rotating bodies such as vertical pumps that use corrosive slurry water for lubrication.
It can be used effectively.
【０００９】また、請求項２の発明において、炭化系金
属に換えて使用される硼化系金属として、たとえば二硼
化チタン（ＴｉＢ2 ）のように、その比重がＴｉ系マト
リックスの比重に近似したものを用いて粉体プラズマ溶
接により肉盛を施すことにより、二硼化チタンをマトリ
ックス中により均一に含有させやすくて一層安定した耐
磨耗性や耐蝕性が発揮される。 [0009] In the second aspect of the present invention, carbide type gold
As boride-based metal used in place of the genus, for example, as titanium diboride (TiB 2), powder plasma soluble using what its specific gravity approximate to a specific gravity of Ti based matrix
The cladding by facilities Succoth by contact, more stable abrasion resistance and corrosion resistance and easy to more uniformly contained titanium diboride in Matrigel <br/> box is exhibited.
【００１０】[0010]
【実施例】図１は本発明の実施例によるすべり軸受装置
を立軸ポンプの軸受に用いたものであり、このすべり軸
受では、摺動部分の潤滑に自揚水である腐食性スラリー
水が利用される構成になっている。１はポンプの軸、２
は軸１に外嵌されたスリーブで、母材２ａと肉盛層２ｂ
とからなる。３は軸受本体で、この軸受本体３にシェル
４を介して摺動部材５が嵌め込まれており、摺動部材５
と上記スリーブ２の肉盛層２ｂとが相対的に摺動回転
し、その摺動部分がスラリー水で潤滑されるようになっ
ている。６は軸受台である。FIG. 1 shows a sliding bearing device according to an embodiment of the present invention used as a bearing of a vertical shaft pump. In this sliding bearing, corrosive slurry water, which is self-pumping water, is used for lubricating sliding parts. Configuration. 1 is the shaft of the pump, 2
Is a sleeve externally fitted to the shaft 1, the base material 2a and the overlay 2b.
Consists of Reference numeral 3 denotes a bearing body, in which a sliding member 5 is fitted via a shell 4 into the bearing body 3.
And the cladding layer 2b of the sleeve 2 relatively slide and rotate, and the sliding portion is lubricated with the slurry water. 6 is a bearing stand.
【００１１】スリーブ２の肉盛層２ｂは、Ｔｉ系マトリ
ックスに炭化系金属を２０〜６０ｖｏｌ％含有する合金
の肉盛により形成されるもので、このような肉盛層２ｂ
は母材２ａに粉体プラズマ肉盛溶接を行うことにより形
成される。上記合金は、ＴｉあるいはＴｉ基のマトリッ
クスにタングステンカーバイド（Ｗ2 Ｃ，ＷＣ）、ニオ
ブカーバイド（ＮｂＣ）、クロムカーバイド（Ｃｒ
Ｃ）、チタンカーバイド（Ｔｉ2 Ｃ）などの炭化系金属
を粉体プラズマ肉盛溶接を行って含有させたものであ
る。[0011] cladding layer 2b of the sleeve 2 is in shall be formed by cladding an alloy containing 20～60Vol% carbide-based metal Ti based matrix, such buildup layer 2b
Is formed by performing powder plasma overlay welding on the base material 2a. The above alloys are prepared by adding tungsten carbide (W 2 C, WC), niobium carbide (NbC), and chromium carbide (Cr) to Ti or a Ti-based matrix.
C) and carbonized metals such as titanium carbide (Ti 2 C) by powder plasma overlay welding.
【００１２】上記肉盛層２ｂはセラミックスよりも靱性
に優れていて、軸受材料との熱膨張率の相違や振動など
に起因する亀裂や欠損を生じにくい。炭化系金属の含有
量を２０〜６０ｖｏｌ％としたのは次の理由による。す
なわち、マトリックス中の炭化系金属の含有量の異なる
合金の複数の肉盛層に対する耐磨耗性試験を行うと、炭
化系金属含有量が２０ｖｏｌ％以上のものについては含
有量が少ないものでも耐磨耗性の急激な低下はみられな
いが、２０ｖｏｌ％より少ないものでは含有量が少なく
なると急激に耐磨耗性が低下する。したがって、炭化系
金属含有量は耐磨耗性についての信頼性を確保する点か
ら２０ｖｏｌ％以上が適切である。また、炭化系金属含
有量が６０ｖｏｌ％以下のものについては、溶接肉盛後
の自然冷却期間において亀裂などの異常が認められなか
ったが、６０ｖｏｌ％を越えるものについては溶接肉盛
後の自然冷却期間において亀裂などの異常が観察され
た。したがって、強度上の観点から炭化系金属含有量は
６０ｖｏｌ％以下が適切である。そして、炭化系金属含
有量が２０〜６０ｖｏｌ％であると、耐磨耗性、耐蝕性
などが十分に満足され、溶接肉盛後に亀裂などの異常も
認められない。好ましい炭化系金属含有量は３０〜４０
ｖｏｌ％であり、この範囲であると、腐食性スラリー水
を潤滑に利用しても腐食や磨耗がきわめて起こりにくく
なることを確認している。The cladding layer 2b has higher toughness than ceramics, and is less likely to crack or break due to a difference in thermal expansion coefficient from the bearing material or vibration. The reason for setting the content of the carbonized metal to 20 to 60 vol% is as follows. That is, when an abrasion resistance test is performed on a plurality of build-up layers of alloys having different contents of the carbide-based metal in the matrix, it is found that even if the content of the carbide-based metal is less than 20 vol%, even if the content is small, the wear resistance is low. No sharp decrease in abrasion is observed, but if the content is less than 20 vol%, the abrasion resistance sharply decreases as the content decreases. Therefore, the content of the carbonized metal is preferably 20 vol% or more from the viewpoint of ensuring the reliability of the wear resistance. No abnormalities such as cracks were observed during the natural cooling period after the weld overlay for those having a carbonized metal content of 60 vol% or less, but for those exceeding 60 vol%, the natural cooling after the weld overlay was performed. Abnormalities such as cracks were observed during the period. Therefore, from the viewpoint of strength, the content of the carbon-based metal is suitably 60 vol% or less. When the content of the carbon-based metal is 20 to 60 vol%, the abrasion resistance, corrosion resistance, and the like are sufficiently satisfied, and no abnormalities such as cracks are found after the weld overlay. Preferred carbonized metal content is 30-40.
vol%, and it is confirmed that when the content is within this range, corrosion and wear are extremely unlikely to occur even when corrosive slurry water is used for lubrication.
【００１３】図１では、本発明を軸１側のスリーブ２だ
けに適用してあるけれども、この点は図２のように軸受
本体３側の摺動部材５側に適用してもよい。すなわち、
図２において、符号５ａで示した部分が肉盛層である。
また、図示していないが、軸受本体３側の摺動部材５側
だけに本発明を適用してもよい。In FIG. 1, the present invention is applied only to the sleeve 2 on the shaft 1, but this point may be applied to the sliding member 5 on the bearing body 3 as shown in FIG. That is,
In FIG. 2, the portion indicated by reference numeral 5a is a build-up layer.
Although not shown, the present invention may be applied only to the sliding member 5 on the bearing body 3 side.
【００１４】以上では、Ｔｉ系マトリックスに炭化系金
属を２０〜６０ｖｏｌ％含有する合金の肉盛層を粉体プ
ラズマ溶接により形成したすべり軸受について説明して
あるが、上記炭化系金属を硼化系金属に置き換えた合金
の肉盛層を粉体プラズマ溶接により形成してもよい。硼
化系金属としては、二硼化チタン（ＴｉＢ2 ）を好適に
採用することができる。[0014] In the above, the cladding layer of an alloy containing 20 to 60 vol% of a carbon-based metal in a Ti-based matrix is formed by powder coating.
A plain bearing formed by plasma welding is described. An alloy in which the above-mentioned carbide-based metal is replaced with a boride-based metal
The cladding layer may be formed by powder plasma welding. As the boride-based metal, titanium diboride (TiB 2 ) can be preferably used.
【００１５】[0015]
【発明の効果】以上のように、請求項１の発明によれ
ば、比重の小さいＴｉ系マトリックスに比重の大きい炭
化系金属の２０〜６０ｖｏｌ％を含有する合金を用い
て、これを粉体プラズマに肉盛溶接することにより、表
面に亀裂や欠損などの異常の発生のない肉盛層を容易に
形成することができるとともに、比重の大きい炭化系金
属を沈殿させることなく、マトリックス中に均一に含有
させて安定した耐磨耗性および耐蝕性を発揮させること
ができる。これによって、特に、自揚水である腐食性ス
ラリー水を潤滑に利用するような立軸ポンプのすべり軸
受として用いた場合でも、腐食による欠損や欠損に伴う
振動等が長期間に亘って起こりにくくなり、すべり軸受
の耐用寿命の向上を図れるという効果を奏する。 As described above , according to the first aspect of the present invention, a Ti-based matrix having a low specific gravity is
Using an alloy containing 20 to 60 vol%
By welding this to powder plasma,
Easily create overlays with no abnormalities such as cracks or defects on the surface
Carbonized metal that can be formed and has a large specific gravity
Uniformly contained in matrix without sedimentation of genus
To exhibit stable wear and corrosion resistance
Can be. Thereby, particularly when used as a sliding bearing of a vertical shaft pump that uses corrosive slurry water, which is self-lifting water, for lubrication, loss due to corrosion and vibration accompanying the loss are unlikely to occur over a long period of time, This has the effect of improving the useful life of the sliding bearing .
【００１６】また、請求項２の発明によれば、Ｔｉ系マ
トリックスにそれの比重に近似する比重を持つ、たとえ
ば二硼化チタン（ＴｉＢ 2 ）などの硼化系金属を含有さ
せた合金を用いて、これを粉体プラズマに肉盛溶接する
ことにより、硼化系金属をマトリックス中により均一に
含有させやすく一層安定した耐磨耗性や耐蝕性を発揮さ
せることができるという効果を奏する。 According to the second aspect of the present invention, the Ti-based
Has a specific gravity that approximates its specific gravity,
Contains boride-based metals such as titanium diboride (TiB 2 ).
Weld overlay this to powder plasma using the wrought alloy
This makes the boride metal more uniform in the matrix
Easy to contain, more stable wear and corrosion resistance
The effect that it can be made to play is produced.
【図１】本発明の実施例によるすべり軸受装置の使用例
を示す断面図である。FIG. 1 is a sectional view showing an example of use of a slide bearing device according to an embodiment of the present invention.
【図２】本発明の他の実施例によるすべり軸受装置の使
用例を示す断面図である。FIG. 2 is a sectional view showing an example of use of a slide bearing device according to another embodiment of the present invention.
１ 軸 ２ スリーブ ２ｂ，５ａ 肉盛層 ３ 軸受本体 ５ 摺動部材 Reference Signs List 1 shaft 2 sleeve 2b, 5a cladding layer 3 bearing body 5 sliding member
Claims (2)
が摺動する軸受本体側の摺動部材とのうち少なくとも一
方に、Ｔｉ系マトリックスに炭化系金属を２０〜６０ｖ
ｏｌ％含有する合金の粉体プラズマ溶接による肉盛層が
形成されていることを特徴とするすべり軸受装置。At least one of a sleeve externally fitted on a shaft and a sliding member on the bearing body side on which the sleeve slides, a Ti-based matrix containing carbonized metal in a volume of 20 to 60 v.
A sliding bearing device, wherein a buildup layer is formed by powder plasma welding of an alloy containing ol%.
が摺動する軸受本体側の摺動部材とのうち少なくとも一
方に、Ｔｉ系マトリックスに硼化系金属を含有する合金
の粉体プラズマ溶接による肉盛層が形成されていること
を特徴とするすべり軸受装置。2. Powder plasma welding of an alloy containing a boride-based metal in a Ti-based matrix to at least one of a sleeve externally fitted to a shaft and a sliding member on the bearing body side on which the sleeve slides. sliding bearing apparatus characterized by the buildup layer is formed by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3151678A JP2645764B2 (en) | 1991-06-24 | 1991-06-24 | Slide bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3151678A JP2645764B2 (en) | 1991-06-24 | 1991-06-24 | Slide bearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH051716A JPH051716A (en) | 1993-01-08 |
| JP2645764B2 true JP2645764B2 (en) | 1997-08-25 |
Family
ID=15523866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3151678A Expired - Fee Related JP2645764B2 (en) | 1991-06-24 | 1991-06-24 | Slide bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2645764B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2751776B2 (en) * | 1993-02-04 | 1998-05-18 | 住友金属工業株式会社 | Titanium alloy cladding powder with excellent seawater resistance and wear resistance |
| CN104533960B (en) * | 2014-12-19 | 2017-04-05 | 重庆市迈雷特数控技术有限公司 | A kind of axle sleeve of rotary axis of machine tool |
| CN104533961B (en) * | 2014-12-19 | 2017-12-01 | 嵊州北航投星空众创科技有限公司 | A kind of axle sleeve for rotary axis of machine tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01250615A (en) * | 1988-03-31 | 1989-10-05 | Toshiba Corp | Sliding member for bearing unit |
-
1991
- 1991-06-24 JP JP3151678A patent/JP2645764B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH051716A (en) | 1993-01-08 |
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