JP2979102B2 - Manufacturing method of sliding parts - Google Patents
Manufacturing method of sliding partsInfo
- Publication number
- JP2979102B2 JP2979102B2 JP8205759A JP20575996A JP2979102B2 JP 2979102 B2 JP2979102 B2 JP 2979102B2 JP 8205759 A JP8205759 A JP 8205759A JP 20575996 A JP20575996 A JP 20575996A JP 2979102 B2 JP2979102 B2 JP 2979102B2
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- JP
- Japan
- Prior art keywords
- weight
- sliding
- alloy material
- alloy
- metal substrate
- 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
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、金属基材に表面硬
化処理を施し耐摩耗性や耐焼付き性を付与してなる摺動
部品の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a sliding part in which a metal substrate is subjected to a surface hardening treatment to impart abrasion resistance and seizure resistance.
【０００２】[0002]
【従来の技術】従来より、たとえばバルブ、ロール、あ
るいはスクリューなどの摺動部品において、強度、剛
性、耐磨耗性などの種々の要求に応えるため、鉄鋼など
の金属材料からなる基材の摺動部位に表面硬化処理を施
し摩擦係数を低減させて、耐摩耗性や耐焼付き性などの
摺動特性を付与することが広く行われている。このよう
な表面硬化処理の方法の一つとして、たとえばステライ
トとよばれるＣｏ合金やΝｉ合金を、ΤＩＧ（Tungsten
Inert Gas）法やＰＴＡ(Plasma Transfer Arc )法、あ
るいは粉体肉盛溶接方法などによって、基材表面の摺動
部位に肉盛溶接する方法があげられる。2. Description of the Related Art Conventionally, for sliding parts such as valves, rolls or screws, in order to meet various requirements such as strength, rigidity and abrasion resistance, sliding of a base material made of a metal material such as steel or the like has been performed. 2. Description of the Related Art It is widely practiced to apply a surface hardening treatment to a moving part to reduce a coefficient of friction and to impart sliding characteristics such as wear resistance and seizure resistance. As one method of such a surface hardening treatment, for example, a Co alloy called a stellite or a Νi alloy is formed by ΤIG (Tungsten
Inert gas), PTA (Plasma Transfer Arc), powder overlay welding, or the like can be used for overlay welding on sliding parts on the substrate surface.
【０００３】このステライト（Ｃｏ−Ｃｒ−Ｗ−Ｃ合
金）は、溶接割れが生じにくいなど溶接施工性にすぐれ
ることから、大型の摺動部品や肉厚の摺動部が要求され
るような摺動部品には多用されるものの、Νｉ合金に比
べ高価である。また、肉盛溶接という方法は、摺動部位
が部品の内周面にある場合、とくに施工のための工具が
入らないほど内径が小さい場合や長尺の場合には、施工
が難しいという難点もあった。[0003] This stellite (Co-Cr-WC alloy) is excellent in welding workability, such as hardly causing welding cracks, and therefore requires large sliding parts and thick sliding parts. Although often used for sliding parts, it is more expensive than the Νi alloy. In addition, the method of build-up welding has the disadvantage that the installation is difficult when the sliding part is on the inner peripheral surface of the part, especially when the inner diameter is small enough to not fit the tool for installation or long. there were.
【０００４】そこで近年、より安価な摺動部材を求め、
ステライトの代替を目的として、Ｎｉを基体とした各種
肉盛合金の開発が進められている。そのようなΝｉ合金
の例としては、たとえば従来よりコルモノイ（米国ウォ
ールコルモノイ社商標）として知られるＮｉ−Ｃｒ−Ｂ
−Ｓｉ系の肉盛合金や、さらにＷＣを添加したＮｉ−Ｃ
ｒ−Β−Ｓｉ系の肉盛合金などがあげられる。これらの
Νｉ合金は、ステライトよりもさらに耐摩耗性や耐焼付
き性にすぐれるという長所を有している。[0004] In recent years, a more inexpensive sliding member has been sought.
For the purpose of replacing stellite, development of various build-up alloys based on Ni has been advanced. An example of such a Νi alloy is, for example, Ni—Cr—B conventionally known as Colmonoy (trademark of Wall Colmonoy, USA).
-Si-based cladding alloy and Ni-C with additional WC
r-Β-Si based overlaying alloys, and the like. These Δi alloys have the advantage that they have better wear resistance and seizure resistance than stellite.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、これら
のΝｉ合金は硬度が高く溶接施工性が充分ではないこと
から、通常行われるようなΤＩＧ溶接法やＰＴΑ溶接法
などにより肉盛溶接施工された場合に、ステライトに比
べて溶接割れが発生し易いという難点があった。また、
これらΝｉ合金の肉盛溶接は、摺動部位が内周面である
場合に、ステライトよりもさらに施工性が悪いという難
点もあった。なお、これらのΝｉ合金は溶射施工も可能
ではあるが、溶射施工により摺動特性にすぐれた被膜を
厚く形成することは容易でなく、通常、得られる摺動部
の厚さはたかだか１．５ｍｍ程度であった。上記事情の
ため、現状ではこれらのΝｉ合金を、大型の摺動部品や
肉厚の摺動部が要求されるような摺動部品へ適用するこ
とは困難であった。However, these Νi alloys have high hardness and insufficient welding workability, so that these Νi alloys are not easily welded by ΤIG welding or PTΑ welding as usual. In addition, there is a problem that welding cracks are easily generated as compared with stellite. Also,
The build-up welding of these Νi alloys has a disadvantage that the workability is worse than that of stellite when the sliding portion is the inner peripheral surface. In addition, these Νi alloys can be thermally sprayed, but it is not easy to form a coating having excellent sliding properties by thermal spraying, and the thickness of the obtained sliding portion is usually at most 1.5 mm. It was about. Under the circumstances described above, it has been difficult at present to apply these Δi alloys to large sliding parts or sliding parts that require thick sliding parts.
【０００６】本発明は、このような従来の摺動部品の製
造方法の難点を解消するために成されたものであり、耐
摩耗性や耐焼付き性にすぐれ安価なΝｉ−Ｃｒ−Β−Ｓ
ｉ系合金、あるいはＷＣを添加したΝｉ−Ｃｒ−Ｂ−Ｓ
ｉ系合金を、基材表面の摺動部位に割れを発生させるこ
となく肉厚に施工することが可能であって、基材の内周
面への施工も容易な摺動部品の製造方法を提供すること
を、その目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the conventional method for manufacturing a sliding component, and is excellent in abrasion resistance and seizure resistance and is inexpensive i-Cr-II-S.
i-Cr-BS with i-based alloy or WC added
A method for manufacturing a sliding component that can apply an i-based alloy to a large thickness without generating cracks at sliding portions on the surface of a base material and that can be easily applied to the inner peripheral surface of the base material. Its purpose is to provide.
【０００７】[0007]
【課題を解決するための手段】本発明の摺動部品の製造
方法は、金属基材表面に合金材料からなる摺動部を形成
する摺動部品の製造方法において、前記合金材料の組成
が、Ｃｒ 8〜27重量％、Ｂ 1.0〜 4重量％、Ｓｉ 2.0〜
6重量％、Ｃ 0.3〜 1.2重量％、Ｆｅ 0.5〜 6重量％、
および残部がＮｉであり、かつ、前記摺動部を形成する
にあたり、前記金属基材表面に前記合金材料を主体とし
てなる予備処理層を形成する工程と、前記予備処理層を
形成した前記金属基材を加熱炉内に配置し、減圧下にて
前記予備処理層を前記金属基材とともに前記合金材料の
固相線以上液相線以下の温度で加熱処理して前記合金材
料を半溶融状態とした後、冷却して前記金属基材表面で
前記合金材料を凝固させる工程とを実施することを特徴
としている。According to the present invention, there is provided a method for manufacturing a sliding part, comprising forming a sliding part made of an alloy material on a surface of a metal substrate, wherein the composition of the alloy material is: Cr 8 to 27% by weight, B 1.0 to 4% by weight, Si 2.0 to
6% by weight, C 0.3-1.2% by weight, Fe 0.5-6% by weight,
And the balance is Ni, and, in forming the sliding portion, forming a pretreated layer comprising the alloy material mainly on the metal substrate surface, the pretreatment layer
Place the formed metal substrate in a heating furnace, under reduced pressure
The pretreatment layer together with the metal base material of the alloy material
After subjected to heat treatment at a temperature above the solidus liquidus and the alloy material and semi-molten state, cooled to be characterized by carrying out the step of solidifying the alloy material with said metal substrate surface I have.
【０００８】本発明において、金属基材表面にΝｉ−Ｃ
ｒ−Β−Ｓｉ系合金あるいはＷＣを添加したΝｉ−Ｃｒ
−Β−Ｓｉ系合金からなる予備処理層を設ける方法とし
ては、金属基材と合金材料とを不均一に強熱するような
方法でなければ、とくに制限はない。たとえば、粉末形
状にした合金材料の溶射施工、あるいは粉末形状の合金
材料を樹脂バインダとともにペースト化し塗布などによ
り、前記金属基材表面に付着させる方法などが好適であ
る。また、金属基材表面に溝加工を施しその溝加工部へ
合金粉末を充填する方法、あるいはこれらの方法の組合
せなどを挙げることができる。[0008] In the present invention, Δi-C
r-Β-Si alloy or Νi-Cr with WC added
There is no particular limitation on the method of providing the pre-treatment layer made of the -Β-Si alloy unless the metal substrate and the alloy material are heated non-uniformly. For example, a method of spraying a powdery alloy material, or a method of pasting and applying a powdery alloy material together with a resin binder to adhere to the surface of the metal base material is suitable. Further, a method of forming a groove on the surface of the metal base material and filling the grooved portion with an alloy powder, or a combination of these methods can be used.
【０００９】ガス溶射などの溶射施工によって予備処理
層を形成すれば、大型の摺動部品なども容易に形成する
ことができる。この溶射施工は、加熱処理されるまで合
金材料を金属基材表面に付着させておくためのものであ
る。合金粉末を樹脂バインダとともにペースト化したも
のを塗布して予備処理層を形成すれば、内周面に摺動部
位があり内径が小さい摺動部品も容易に製造が可能であ
る。If the pretreatment layer is formed by thermal spraying such as gas thermal spraying, a large sliding part can be easily formed. This thermal spraying is for keeping the alloy material on the surface of the metal base material until the heat treatment is performed. If a pretreatment layer is formed by applying a paste of alloy powder together with a resin binder to form a pretreatment layer, a sliding part having a sliding portion on the inner peripheral surface and a small inner diameter can be easily manufactured.
【００１０】本発明において、加熱処理の温度は、Νｉ
−Ｃｒ−Β−Ｓｉ系合金の固相線以上の１０００〜１１
５０℃の範囲が好ましい。１０００℃より低い場合には
合金材料の溶融が充分でなく、また金属基材との密着性
が低くなるおそれがある。一方、１１５０℃を超える場
合には、炭素鋼やステンレス鋼からなる基材の機械的特
性に悪影響を及ぼすおそれがあり、また被覆層である摺
動部と基材との相互拡散が促進され、被覆層の特性が低
下するおそれもある。したがって、本発明において加熱
処理温度は、１０００〜１１５０℃の範囲内が好まし
く、さらに好ましくは１０４０〜１１００℃の範囲であ
る。この温度条件は合金材料の液相線以上に限定する必
要はなく、液相線以下の温度でも緻密で密着性のよい被
覆層が形成可能である。In the present invention, the temperature of the heat treatment is Δi
1000-11 above the solidus of -Cr-Β-Si based alloys
A range of 50 ° C. is preferred. If the temperature is lower than 1000 ° C., the alloy material may not be sufficiently melted, and the adhesion to the metal substrate may be reduced. On the other hand, when the temperature exceeds 1150 ° C., the mechanical properties of the base material made of carbon steel or stainless steel may be adversely affected, and the interdiffusion between the sliding part and the base material, which is the coating layer, is promoted, The properties of the coating layer may be reduced. Therefore, in the present invention, the heat treatment temperature is preferably in the range of 1000 to 1150 ° C, and more preferably in the range of 1040 to 1100 ° C. The temperature condition need not be limited to a temperature higher than the liquidus of the alloy material, and a dense and highly adherent coating layer can be formed even at a temperature lower than the liquidus.
【００１１】本発明においては、表面に予備処理層を形
成した金属基材を加熱炉中に保持して上記温度の加熱処
理を行うことにより、基材と予備処理層とが同時に均一
に加熱されるため、溶接割れの発生を防ぐことができ
る。また、加熱処理温度をＮｉ−Ｃｒ−Β−Ｓｉ系合金
の液相線以下の温度とすることにより、加熱処理時の合
金材料の流動性が低減される。したがって、本発明の製
造方法によれば内周面施工で問題となるような合金材料
の垂れ落ちを防ぐことができる。In the present invention, the metal substrate having the pre-treated layer formed on the surface is held in a heating furnace and subjected to the heat treatment at the above temperature, whereby the substrate and the pre-treated layer are simultaneously and uniformly heated. Therefore, occurrence of welding cracks can be prevented. Further, by setting the heat treatment temperature to a temperature equal to or lower than the liquidus line of the Ni-Cr-Β-Si alloy, the fluidity of the alloy material during the heat treatment is reduced. Therefore, according to the manufacturing method of the present invention, it is possible to prevent the alloy material from dripping, which is a problem in the inner peripheral surface construction.
【００１２】本発明において、金属基材の表面に形成さ
れた予備処理層は、形成された段階では多量の空隙を含
み密度が低いが、上記温度の加熱処理により溶融凝固し
た後においては空隙がなくなり、緻密な合金材料からな
る摺動部が金属基材表面に形成される。予備処理の段階
では予備処理層に金属酸化物が混入した状態となってい
るが、このような酸化物の存在は、緻密な合金材料から
なる摺動部の形成を阻害することから、本発明において
加熱処理は、真空中あるいは水素雰囲気中で行われるこ
とがより望ましい。In the present invention, the pretreatment layer formed on the surface of the metal substrate has a low density including a large amount of voids at the stage of formation, but has voids after being melt-solidified by the above-mentioned heat treatment. As a result, a sliding portion made of a dense alloy material is formed on the surface of the metal substrate. In the pre-treatment stage, the pre-treatment layer is in a state where metal oxide is mixed in the pre-treatment layer. However, since the presence of such an oxide hinders the formation of a sliding portion made of a dense alloy material, the present invention Is more preferably performed in a vacuum or a hydrogen atmosphere.
【００１３】本発明において、金属基材としてはたとえ
ば炭素鋼やステンレス鋼などの鉄系材料や、インコネル
などのＮｉ系金属材料が使用可能である。In the present invention, as the metal substrate, for example, an iron-based material such as carbon steel or stainless steel, or a Ni-based metal material such as Inconel can be used.
【００１４】以下、本発明に係るＮｉ−Ｃｒ−Β−Ｓｉ
系合金組成における各元素の限定理由について説明す
る。Hereinafter, Ni-Cr-Β-Si according to the present invention will be described.
The reasons for limiting each element in the base alloy composition will be described.
【００１５】クロム（Ｃｒ）は、合金材料の耐食性およ
び合金の素地を強化するために必要な成分であるが、 8
重量％より少ないときにはその強化効果が充分でなく、
27重量％を超えて多量に添加すると靭性が低下する。し
たがって、本発明においてはＣｒを 8〜27重量％の範囲
で含むことが望ましい。なお、さらに望ましくは10〜26
重量％の範囲である。Chromium (Cr) is a component necessary for strengthening the corrosion resistance of the alloy material and the base of the alloy.
When it is less than the weight%, the reinforcing effect is not enough,
If added in a large amount exceeding 27% by weight, the toughness decreases. Therefore, in the present invention, it is desirable to contain Cr in the range of 8 to 27% by weight. In addition, more preferably, 10 to 26
% By weight.
【００１６】ホウ素（Ｂ）は、ホウ化物を生成して耐摩
耗性および強度を上昇させるのに有効な元素であるが、
1.0重量％より少ないときにはその効果が充分でなく、
4重量％を超えて多量に添加すると靭性が低下する。し
たがって、本発明においてはＢを 1.0〜 4重量％の範囲
で含むことが望ましい。なお、さらに望ましくは 2.0〜
3.5重量％の範囲である。[0016] Boron (B) is an element effective for forming borides to increase wear resistance and strength.
If less than 1.0% by weight, the effect is not enough,
If it is added in a large amount exceeding 4% by weight, toughness decreases. Therefore, in the present invention, B is desirably contained in the range of 1.0 to 4% by weight. In addition, more preferably 2.0 to
It is in the range of 3.5% by weight.
【００１７】ケイ素（Ｓｉ）は、硅化物を生成して耐摩
耗性および強度を上昇させるのに有効な元素であるが、
2.0重量％より少ないときにはその効果が充分でなく、
6重量％を超えて多量に添加すると靭性が低下する。し
たがって、本発明においてはＳｉを 2.0〜 6重量％の範
囲で含むことが望ましい。なお、さらに望ましくは 2.2
〜 4.5重量％の範囲である。[0017] Silicon (Si) is an element effective in forming silicide to increase wear resistance and strength.
When less than 2.0% by weight, the effect is not enough,
If added in a large amount exceeding 6% by weight, the toughness is reduced. Therefore, in the present invention, it is desirable to contain Si in the range of 2.0 to 6% by weight. In addition, more preferably 2.2
In the range of ~ 4.5% by weight.
【００１８】炭素（Ｃ）は、合金材料の耐摩耗性および
硬度を上昇させるのに有効な元素であって、合金材料中
0.3〜 1.2重量％含まれていることが望ましい。さらに
望ましくは 0.4〜 1.0重量％の範囲である。 0.3重量％
より少ないときには耐摩耗性も硬度も低下し、反対に
1.2重量％を超えて多量に添加すると靭性が低下するた
め、ともに好ましくない。[0018] Carbon (C) is an element effective in increasing the wear resistance and hardness of the alloy material.
It is desirable to contain 0.3 to 1.2% by weight. More preferably, it is in the range of 0.4 to 1.0% by weight. 0.3% by weight
When it is less, the wear resistance and hardness decrease, and conversely
If it is added in a large amount exceeding 1.2% by weight, the toughness decreases, and both are not preferred.
【００１９】鉄（Ｆｅ）は、素地の強化および衝撃特性
を向上させるのに有効な元素であるが、 0.5重量％より
少ないときにはその効果が充分でなく、 6重量％を超え
て多量に添加すると機械的強度や摩耗特性が低下する。
したがって、本発明においてはＦｅを 0.5〜 6重量％の
範囲で含むことが望ましい。なお、さらに望ましくは1
〜 5重量％の範囲である。Iron (Fe) is an effective element for strengthening the base and improving the impact characteristics. However, when the content is less than 0.5% by weight, the effect is not sufficient, and when added in a large amount exceeding 6% by weight. Mechanical strength and wear characteristics are reduced.
Therefore, in the present invention, it is desirable to contain Fe in the range of 0.5 to 6% by weight. In addition, more preferably, 1
In the range of ~ 5% by weight.
【００２０】なお、上記元素のうちホウ素（Ｂ）とケイ
素（Ｓｉ）は、酸素との親和力が他のＮｉやＣｒなどの
金属元素よりも強いことから、上記役割の他に、発生し
た金属酸化物をホウケイ酸ガラス質スラグとして溶解し
て溶解中の合金材料表面へ浮上させるという、フラック
スとしての役割をも果たしている。したがって合金材料
組成中のＢとＳｉの存在は、冷却後の合金材料の層から
空隙を除去し基材との密着性が良好で緻密な摺動部の形
成に役立っている。Among the above elements, boron (B) and silicon (Si) have a higher affinity for oxygen than other metal elements such as Ni and Cr. It also plays a role as a flux that dissolves the material as borosilicate glassy slag and floats it on the surface of the alloy material being melted. Therefore, the presence of B and Si in the composition of the alloy material removes voids from the layer of the alloy material after cooling, and contributes to formation of a dense sliding portion having good adhesion to the base material.
【００２１】さらに、上記した本発明に係わるＮｉ−Ｃ
ｒ−Ｂ−Ｓｉ系合金に、耐摩耗性の向上を目的としてタ
ングステンカーバイド（ＷＣ）を加えることも可能であ
る。ＷＣの添加量が上記合金材料１００重量部に対して
３０重量部より少ない場合には耐摩耗性向上の効果が充
分でなく、６０重量部を超えて添加された場合には、均
一な被覆層の形成を妨げ靭性を低下させる。したがっ
て、本発明においてＷＣを添加する場合には、３０〜６
０重量部の範囲が望ましい。さらに望ましくは３５〜５
０％重量部の範囲である。Further, the Ni-C according to the present invention described above.
Tungsten carbide (WC) can be added to the r-B-Si alloy for the purpose of improving wear resistance. When the addition amount of WC is less than 30 parts by weight based on 100 parts by weight of the alloy material, the effect of improving the wear resistance is not sufficient, and when the addition amount exceeds 60 parts by weight, the uniform coating layer is formed. The formation hinders the formation of and reduces toughness. Therefore, when WC is added in the present invention, 30 to 6
A range of 0 parts by weight is desirable. More preferably, 35 to 5
It is in the range of 0% by weight.
【００２２】なお、ＷＣをＮｉ−Ｃｒ−Β−Ｓｉ系合金
に加える場合には、バインダとしてコバルト（Ｃｏ）を
同時に添加することが望ましい。Ｃｏの添加量として
は、上記合金材料１００重量部に対して１〜５重量部が
望ましい。When WC is added to a Ni-Cr-Β-Si alloy, it is desirable to add cobalt (Co) as a binder at the same time. The addition amount of Co is preferably 1 to 5 parts by weight based on 100 parts by weight of the alloy material.
【００２３】[0023]
【発明の実施の形態】以下、本発明の実施例について説
明する。Embodiments of the present invention will be described below.
【００２４】摺動部品の製造に先立ち、高周波溶解炉を
用いて各元素を次の表１に示す組成となるように溶解し
た後、ガスアトマイズ法により粉末化して、合金粉末を
製造した。なお、表１において、試料１および２は本発
明にしたがう組成のΝｉ−Ｃｒ−Β−Ｓｉ系合金粉末、
試料３は組成の一部が本発明にしたがわないΝｉ−Ｃｒ
−Β−Ｓｉ系合金粉末、そして試料４はＣｏ合金である
ステライトである。Prior to the manufacture of the sliding parts, each element was melted using a high-frequency melting furnace so as to have the composition shown in the following Table 1, and then powdered by a gas atomization method to manufacture an alloy powder. In Table 1, Samples 1 and 2 were composed of a {i-Cr-}-Si alloy powder having a composition according to the present invention,
In sample 3, a part of the composition does not conform to the present invention.
-Β-Si alloy powder and Sample 4 are stellite which is a Co alloy.
【００２５】[0025]
【表１】 実施例１ 図１は、本発明の方法により製造された摺動部品１の縦
断面図である。[Table 1] Embodiment 1 FIG. 1 is a longitudinal sectional view of a sliding component 1 manufactured by the method of the present invention.
【００２６】摺動部品１の製造にあたって、炭素鋼（Ｓ
２５Ｃ）からなる直径２００ｍｍ、厚さ５０ｍｍの円板
状の基材２の一方の板面上に、試料１の合金粉末をガス
溶射法によって厚さ４ｍｍとなるように付着させて、予
備処理層３を形成した。そして、予備処理層３が形成さ
れた基材１を、３×１０-4ｔｏｒｒの真空雰囲気中に保
持して温度１０８０℃で５分間の加熱処理を行った。そ
の後、常温にまで放冷したところ、合金材料からなる緻
密な被覆層４である摺動部が形成された摺動部品１が得
られた。その被覆層４に割れは認められなかった。In manufacturing the sliding part 1, carbon steel (S
25C) The alloy powder of sample 1 is adhered to one plate surface of a disk-shaped substrate 2 having a diameter of 200 mm and a thickness of 50 mm by a gas spraying method so as to have a thickness of 4 mm. 3 was formed. Then, the base material 1 on which the pre-treatment layer 3 was formed was subjected to a heat treatment at 1080 ° C. for 5 minutes while being kept in a vacuum atmosphere of 3 × 10 −4 torr. Thereafter, when the cooling part was allowed to cool to room temperature, a sliding part 1 having a sliding part as a dense coating layer 4 made of an alloy material was obtained. No crack was observed in the coating layer 4.
【００２７】次に、このようにして得られた摺動部品１
の耐耗試験および耐焼付き性試験を行った。上記試験に
際して、摺動部品１から図２に示すような形状の試験片
５および６を採取した。摩耗試験は、１ｍ／ｓの周速度
で回転する試験片５に試験片６を互いに摺動部が接する
ように対向させて２０ｋｇの荷重で押し付け、距離にし
て１ｋｍ摺動後における試験片６の重量減少量を測定し
た。一方、耐焼付き性試験は、２つの試験片５、５を用
意し、試験片５同士を互いに摺動部が接するように対向
させて荷重１０ｋｇ／ｍｍ2 で押し付け、室温水中で一
方の試験片を１０ｍｍ／ｓの速度、２０ｍｍのストロー
クで１００回の往復動をさせた後、試験片表面の焼付き
の有無を調べた。Next, the sliding component 1 thus obtained is
Was subjected to a wear test and a seizure resistance test. In the above test, test pieces 5 and 6 each having a shape as shown in FIG. In the abrasion test, the test piece 6 was pressed against a test piece 5 rotating at a peripheral speed of 1 m / s with a load of 20 kg so that the sliding portions were in contact with each other, and the test piece 6 was moved after a distance of 1 km. The weight loss was measured. On the other hand, in the seizure resistance test, two test pieces 5, 5 were prepared, and the test pieces 5 were pressed with a load of 10 kg / mm 2 so that the sliding portions were in contact with each other. Was reciprocated 100 times at a speed of 10 mm / s and a stroke of 20 mm, and the surface of the test piece was examined for seizure.
【００２８】その結果摩耗減量は１．８ｍｇであり、表
面の焼付きは見られないというすぐれた摺動特性を有し
ていることが判明した。As a result, the abrasion loss was 1.8 mg, and it was found that the material had excellent sliding characteristics such that no surface seizure was observed.
【００２９】実施例２ 試料１の合金粉末を樹脂バインダと混合しペースト状と
して予備処理層を形成するようにした他は、実施例１と
同様にして摺動部品を製造した。その被覆層に割れは認
められなかった。Example 2 A sliding part was manufactured in the same manner as in Example 1, except that the alloy powder of Sample 1 was mixed with a resin binder to form a paste and form a pretreatment layer. No crack was observed in the coating layer.
【００３０】また、実施例１と同様にして摩耗試験およ
び耐焼付き性試験を行ったところ、摩耗減量は２．３ｍ
ｇであり、表面の焼付きは見られないというすぐれた摺
動特性を有していることが判明した。When a wear test and a seizure resistance test were conducted in the same manner as in Example 1, the loss on wear was 2.3 m.
g, which proved to have excellent sliding characteristics in which no image sticking was observed.
【００３１】実施例３ 合金粉末として、試料１の合金１００重量部に対して５
０重量部のＷＣと３．５重量部のＣｏを添加して得られ
る合金粉末を使用した他は、実施例１と同様にして摺動
部品を製造した。その被覆層に割れは認められなかっ
た。Example 3 As an alloy powder, 5 parts per 100 parts by weight of the alloy of Sample 1 was used.
Sliding parts were manufactured in the same manner as in Example 1 except that an alloy powder obtained by adding 0 parts by weight of WC and 3.5 parts by weight of Co was used. No crack was observed in the coating layer.
【００３２】また、実施例１と同様にして摩耗試験およ
び耐焼付き性試験を行ったところ、摩耗減量は１．６ｍ
ｇであり、表面の焼付きは見られないというすぐれた摺
動特性を有していることが判明した。When a wear test and a seizure resistance test were conducted in the same manner as in Example 1, the loss on wear was 1.6 m.
g, which proved to have excellent sliding characteristics in which no image sticking was observed.
【００３３】実施例４ 外径７０ｍｍ、内径５０ｍｍ、長さ３００ｍｍの円筒状
金属基材の内周面に、試料２の合金粉末を樹脂バインダ
と混合しペースト状として予備処理層を厚さ４ｍｍとな
るように形成し、予備処理層が形成された基材を、３×
１０-4ｔｏｒｒの真空雰囲気中に保持して試料２の液相
線以下となる温度１０６０℃で５分間の加熱処理を行っ
た。その後、常温にまで放冷したところ、合金材料から
なる緻密な被覆層が形成された摺動部品が得られた。そ
の被覆層に割れは認められなかった。Example 4 The alloy powder of Sample 2 was mixed with a resin binder on the inner peripheral surface of a cylindrical metal substrate having an outer diameter of 70 mm, an inner diameter of 50 mm, and a length of 300 mm to form a paste to form a pretreatment layer having a thickness of 4 mm. And the base material on which the pre-treatment layer is formed is 3 ×
The sample was kept in a vacuum atmosphere of 10 -4 torr and subjected to a heat treatment for 5 minutes at a temperature of 1060 ° C. below the liquidus of Sample 2. After that, the mixture was allowed to cool to room temperature, and a sliding component having a dense coating layer made of an alloy material was obtained. No crack was observed in the coating layer.
【００３４】比較例１ 炭素鋼（Ｓ２５Ｃ）からなる直径２００ｍｍ、厚さ５０
ｍｍの円板状の基材の一方の板面上に、試料１の合金粉
末を、ΡΤΑ法により３００℃の予熱温度条件で肉盛溶
接したところ、溶接後の被覆層表面に割れが観察され
た。Comparative Example 1 A carbon steel (S25C) having a diameter of 200 mm and a thickness of 50
When the alloy powder of sample 1 was overlay-welded on one plate surface of a disk-shaped base material of 300 mm under the preheating temperature condition of 300 ° C. by the method 割 れ, cracks were observed on the surface of the coating layer after welding. Was.
【００３５】比較例２ 合金粉末として試料３の合金粉末を用いた他は、実施例
１と同様にして摺動部品を製造した。その被覆層に割れ
は認められなかった。Comparative Example 2 A sliding component was manufactured in the same manner as in Example 1 except that the alloy powder of Sample 3 was used as the alloy powder. No crack was observed in the coating layer.
【００３６】しかしながら、実施例１と同様にして摩耗
試験および耐焼付き性試験を行ったところ、摩耗減量は
２４．７ｍｇと大きく、表面の焼付きも見出だされた。However, when a wear test and a seizure resistance test were conducted in the same manner as in Example 1, the loss on abrasion was as large as 24.7 mg, and seizure on the surface was also found.
【００３７】比較例３ 合金粉末として試料４のステライトを用いた他は、比較
例１と同様にして肉盛溶接して摺動部品を製造した。溶
接後の被覆層表面に割れは認められなかった。そして、
実施例１と同様にして摩耗試験および耐焼付き性試験を
行ったところ、摩耗減量は２．５ｍｇであり、表面の焼
付きは見られないという摺動特性を有していた。Comparative Example 3 A sliding part was produced by overlay welding in the same manner as in Comparative Example 1 except that the stellite of Sample 4 was used as the alloy powder. No crack was observed on the surface of the coating layer after welding. And
A wear test and a seizure resistance test were performed in the same manner as in Example 1. As a result, the abrasion loss was 2.5 mg, and the sliding characteristics showed no seizure on the surface.
【００３８】比較例４ 加熱処理温度を９５０℃とした他は実施例１と同様にし
て摺動部品を製造した。が、その被覆層には多数の空隙
が認められた。Comparative Example 4 A sliding part was manufactured in the same manner as in Example 1 except that the heat treatment temperature was 950 ° C. However, many voids were found in the coating layer.
【００３９】比較例５ 加熱処理温度を１２００℃とした他は実施例１と同様に
して摺動部品を製造した。採取した試験片の断面につい
て走査型電子顕微鏡観察を行ったところ、被覆層へ多量
の鉄元素が混入しているのが認められた。Comparative Example 5 A sliding part was manufactured in the same manner as in Example 1 except that the heat treatment temperature was 1200 ° C. Scanning electron microscope observation was performed on the cross section of the test specimen, and it was found that a large amount of iron element was mixed in the coating layer.
【００４０】次の表２に、上記した実施例１、同２、同
３、比較例２、および同３における摩耗試験及び耐焼付
き性試験の結果を示した。Table 2 shows the results of the abrasion test and the seizure resistance test in Examples 1, 2, and 3, Comparative Examples 2 and 3 described above.
【００４１】[0041]
【表２】 表２からも明らかなように、本発明により得られた摺動
部品の摩耗減量は、ステライトを用いた従来の方法によ
る摺動部品よりも小さく、焼付きもみられなかった。す
なわち本発明の方法によれば、ステライトと同等あるい
はそれ以上にすぐれた耐摩耗性および耐焼付き性を有す
る摺動部を厚く形成した摺動部品が製造可能であった。[Table 2] As is evident from Table 2, the sliding parts obtained by the present invention had smaller abrasion loss than the sliding parts obtained by the conventional method using stellite, and no seizure was observed. That is, according to the method of the present invention, it was possible to produce a sliding part having a thicker sliding portion having abrasion resistance and seizure resistance superior to or higher than that of stellite.
【００４２】[0042]
【発明の効果】本発明によれば、施工する際に割れの発
生のおそれがなく、耐摩耗性や耐焼付き性にすぐれた摺
動部を金属基材上に容易に、しかも厚く形成可能であ
る。また、施工性にすぐれることから、大型の摺動部品
や肉厚の摺動部を必要とする摺動部品、あるいは基材の
内周面に摺動部を備えた摺動部品も容易に製造可能であ
り、工業上非常に有益である。According to the present invention, it is possible to easily and thickly form a sliding portion excellent in abrasion resistance and seizure resistance on a metal base without fear of cracking during construction. is there. Also, because of its excellent workability, it is easy to use large sliding parts, sliding parts that require thick sliding parts, or sliding parts that have sliding parts on the inner peripheral surface of the base material. Manufacturable and very industrially beneficial.
【図１】本発明により得られる摺動部品の断面を示す模
式図である。FIG. 1 is a schematic view showing a cross section of a sliding component obtained by the present invention.
【図２】摺動特性評価のために採取される試験片の形状
を示す断面模式図である。FIG. 2 is a schematic sectional view showing a shape of a test piece taken for evaluating sliding characteristics.
１………摺動部品 ２………基材 ３………予備処理層 ４………緻密な被覆層 ５、６………試験片 DESCRIPTION OF SYMBOLS 1 ... Sliding parts 2 ... Base material 3 ... Pretreatment layer 4 ... Dense coating layer 5, 6 ... Test piece
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ２３Ｃ 10/54 Ｃ２３Ｃ 10/54 26/00 26/00 Ｅ (58)調査した分野(Int.Cl.6，ＤＢ名) C23C 10/28 C23C 4/06 - 4/08 C22C 19/03 ──────────────────────────────────────────────────続 き Continuation of front page (51) Int.Cl. 6 identification code FI C23C 10/54 C23C 10/54 26/00 26/00 E (58) Field surveyed (Int.Cl. 6 , DB name) C23C 10/28 C23C 4/06-4/08 C22C 19/03
Claims (3)
を形成する摺動部品の製造方法において、 前記合金材料が、Ｃｒ 8〜27重量％、Ｂ 1.0〜 4重量
％、Ｓｉ 2.0〜 6重量％、Ｃ 0.3〜 1.2重量％、Ｆｅ
0.5〜 6重量％、および残部がＮｉの組成を有し、か
つ、前記摺動部を形成するにあたり、前記金属基材表面
に前記合金材料を主体としてなる予備処理層を形成する
工程と、前記予備処理層を形成した前記金属基材を加熱
炉内に配置し、減圧下にて前記予備処理層を前記金属基
材とともに前記合金材料の固相線以上液相線以下の温度
で加熱処理して前記合金材料を半溶融状態とした後、冷
却して前記金属基材表面で前記合金材料を凝固させる工
程とを実施することを特徴とする摺動部品の製造方法。1. A method of manufacturing a sliding part, wherein a sliding portion made of an alloy material is formed on a surface of a metal substrate, wherein the alloy material is Cr: 8 to 27% by weight, B: 1.0 to 4% by weight, Si: 2.0 to 2.0%. 6% by weight, C 0.3-1.2% by weight, Fe
0.5 to 6 wt%, and the balance has a composition of Ni, and, in forming the sliding portion to form a pretreatment layer comprising the alloy material mainly on the metal substrate surface
And heating the metal substrate on which the pre-treatment layer is formed.
Arranged in a furnace, the pre-treatment layer under reduced pressure together with the metal substrate after the heat treatment at a temperature not less than the solidus line or liquidus line of the alloy material to make the alloy material a semi-molten state , cooling the engineering of solidifying the alloy material with said metal substrate surface
Method for producing a sliding component which comprises carrying out the extent.
ことを特徴とする請求項１記載の摺動部品の製造方法。2. A thickness of the sliding portion, 請 Motomeko 1 Symbol mounting sliding component Method of manufacture of you, wherein a is 1mm or more.
らに３０〜６０重量部のＷＣが添加されていることを特
徴とする請求項１または請求項２記載の摺動部品の製造
方法。Relative wherein the alloy material 100 parts by weight, further production of sliding parts to that請 Motomeko 1 or claim 2 Symbol mounting, characterized in that 30 to 60 parts by weight of WC is added Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8205759A JP2979102B2 (en) | 1996-08-05 | 1996-08-05 | Manufacturing method of sliding parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8205759A JP2979102B2 (en) | 1996-08-05 | 1996-08-05 | Manufacturing method of sliding parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1046319A JPH1046319A (en) | 1998-02-17 |
| JP2979102B2 true JP2979102B2 (en) | 1999-11-15 |
Family
ID=16512202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8205759A Expired - Fee Related JP2979102B2 (en) | 1996-08-05 | 1996-08-05 | Manufacturing method of sliding parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2979102B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4614553B2 (en) * | 2001-02-09 | 2011-01-19 | 株式会社ブリヂストン | Rubber kneader seal structure |
| GB0816836D0 (en) | 2008-09-15 | 2008-10-22 | Element Six Holding Gmbh | Steel wear part with hard facing |
| JP6118144B2 (en) * | 2013-03-14 | 2017-04-19 | ボーグワーナー インコーポレーテッド | Method for manufacturing wear-resistant chain pin |
-
1996
- 1996-08-05 JP JP8205759A patent/JP2979102B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1046319A (en) | 1998-02-17 |
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