JP3334011B2 - Sliding parts - Google Patents
Sliding partsInfo
- Publication number
- JP3334011B2 JP3334011B2 JP33394793A JP33394793A JP3334011B2 JP 3334011 B2 JP3334011 B2 JP 3334011B2 JP 33394793 A JP33394793 A JP 33394793A JP 33394793 A JP33394793 A JP 33394793A JP 3334011 B2 JP3334011 B2 JP 3334011B2
- Authority
- JP
- Japan
- Prior art keywords
- diffracted
- intensity
- plating layer
- plane
- silver plating
- 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
Landscapes
- Joints With Pressure Members (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、たとえばねじ込み式
管継手用のユニオンナットおよびユニオンねじのような
互いにねじ合わせられるねじ部品や、すべり軸受および
これに支持される軸や、互いに摺動する２つの板状体な
どとして用いられる摺動部品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threaded part which can be screwed together, such as a union nut and a union screw for a threaded pipe joint, a plain bearing and a shaft supported by the same, The present invention relates to a sliding component used as one plate-like body or the like.
【０００２】[0002]
【従来の技術】たとえばねじ込み式管継手用のユニオン
ナットおよびユニオンねじは、これらを互いにねじ合わ
せるさいにフランクどうしが摺動するようになってい
る。そして、従来、ユニオンナットとしては、その締め
付けのさいのかじり、焼付きを防止する目的で、ユニオ
ンナットのねじ部の表面に銀メッキ層が形成されたもの
が用いられている。2. Description of the Related Art For example, in a union nut and a union screw for a threaded pipe joint, the flanks are slid when screwing these together. Conventionally, a union nut in which a silver plating layer is formed on the surface of the thread portion of the union nut has been used for the purpose of preventing galling and seizure during tightening.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
ユニオンナットには次のような問題が生じることが判明
した。すなわち、ねじ込み式管継手の脱着を繰り返して
行なう場合のように、ユニオンナットのユニオンねじへ
の締め付けおよび戻しを繰り返して行なうと、ユニオン
ナットとユニオンねじとの摺動面間の摩擦抵抗が大きく
なり、その結果締め付けに要するトルクが徐々に大きく
なる。したがって、締め付けトルクによる締め付け軸力
の管理を行えなくなって、所定の締め付け軸力を得られ
なくなるという問題がある。また、戻しトルクが増大し
て、管継手の取り外し作業が困難になるという問題があ
る。However, it has been found that the following problems occur in the conventional union nut. In other words, when the union nut is repeatedly tightened and returned to the union screw as in the case of repeatedly attaching and detaching the threaded pipe joint, the frictional resistance between the sliding surfaces of the union nut and the union screw increases. As a result, the torque required for tightening gradually increases. Therefore, there is a problem that the fastening axial force cannot be managed by the fastening torque, and a predetermined fastening axial force cannot be obtained. In addition, there is a problem that the return torque increases and it becomes difficult to remove the pipe joint.
【０００４】そこで、この発明の発明者等が上記問題の
生じる原因を突き止めるために、種々実験研究を重ねた
結果、銀メッキ層の結晶構造、特に（１１１）面で回折
された回折Ｘ線の強度と、（２００）面で回折された回
折Ｘ線の強度との関係が上記問題の発生に深く関わり合
っており、従来のユニオンナットでは、銀メッキ層の
（１１１）面で回折された回折Ｘ線の強度を１００とし
た場合に、（２００）面で回折された回折Ｘ線の強度が
３０未満であり、その結果上記問題が発生することが判
明した。The inventors of the present invention have conducted various experimental studies in order to find the cause of the above-mentioned problem. As a result, the crystal structure of the silver plating layer, especially the diffraction X-ray diffracted on the (111) plane, has been found. The relationship between the intensity and the intensity of the diffracted X-ray diffracted on the (200) plane is closely related to the occurrence of the above problem. In the conventional union nut, the diffracted light diffracted on the (111) plane of the silver plating layer is used. Assuming that the intensity of the X-ray is 100, the intensity of the diffracted X-ray diffracted on the (200) plane is less than 30, and as a result, it has been found that the above problem occurs.
【０００５】この発明の目的は、上記問題を解決した摺
動部品を提供することにある。An object of the present invention is to provide a sliding component which solves the above-mentioned problem.
【０００６】[0006]
【課題を解決するための手段】この発明による摺動部品
は、金属製摺動部品本体における他の金属部品と摺動す
る面に銀メッキ層が形成され、この銀メッキ層が、その
（２００）面で回折された回折Ｘ線の強度が（１１１）
面で回折された回折Ｘ線の強度の１／３以上となるよう
な結晶構造を有しているものである。In the sliding component according to the present invention, a silver plating layer is formed on a surface of a metal sliding component body which slides with another metal component, and the silver plating layer is formed of the (200). ) Plane, the intensity of the diffracted X-rays is (111)
It has a crystal structure such that the intensity of the diffracted X-ray diffracted by the plane is at least 1/3.
【０００７】上記において、銀メッキ層の結晶構造を、
その（２００）面で回折された回折Ｘ線の強度が（１１
１）面で回折された回折Ｘ線の強度の１／３以上となる
ような結晶構造に限定したのは、上記強度が１／３未満
であれば、摺動を繰り返して行なった場合に、摩擦抵抗
が大きくなるからである。たとえばユニオンナットの場
合では、締め付けを繰り返して行なううちに、摩擦抵抗
が大きくなって締め付けおよび戻しに要するトルクが大
きくなるからである。In the above, the crystal structure of the silver plating layer is
The intensity of the diffracted X-ray diffracted on the (200) plane is (11)
1) The reason why the crystal structure is limited to one-third or more of the intensity of the diffracted X-ray diffracted by the plane is that if the intensity is less than one-third, the sliding is repeated. This is because the frictional resistance increases. For example, in the case of a union nut, the frictional resistance increases and the torque required for tightening and returning increases as the tightening is repeated.
【０００８】銀メッキ層の結晶構造を上記のようなもの
にするには、たとえば金属製摺動部品本体における他の
金属部品と摺動する面に銀メッキ層を形成した後、４０
０〜５５０℃で２〜７時間加熱する熱処理を施すのがよ
い。しかしながら、これに限定されない。In order to make the crystal structure of the silver plating layer as described above, for example, after forming the silver plating layer on the surface of the metal sliding component main body that slides with other metal components, the silver plating layer is formed.
It is preferable to perform a heat treatment of heating at 0 to 550 ° C. for 2 to 7 hours. However, it is not limited to this.
【０００９】[0009]
【作用】金属製摺動部品本体における他の金属部品と摺
動する面に形成された銀メッキ層が、その（２００）面
で回折された回折Ｘ線の強度が（１１１）面で回折され
た回折Ｘ線の強度の１／３以上となるような結晶構造を
有していると、摺動を繰り返して行なったとしても、摩
擦抵抗の増大は起こらない。The silver plating layer formed on the surface of the metal sliding component body that slides with other metal components has the intensity of the diffracted X-ray diffracted on its (200) plane diffracted on the (111) plane. When the crystal structure is such that the intensity of the diffracted X-rays is 1/3 or more, the frictional resistance does not increase even if sliding is repeated.
【００１０】[0010]
【実施例】以下、この発明の実施例を比較例とともに説
明する。Hereinafter, examples of the present invention will be described together with comparative examples.
【００１１】実施例１ ステンレス鋼からなるユニオンナットのねじ部の表面に
厚さ２０μｍの銀メッキ層を形成した後、これを４００
℃で６時間加熱した。銀メッキ層の（２００）面で回折
された回折Ｘ線の強度は、（１１１）面で回折された回
折Ｘ線の強度を１００とした場合、６６であった。Example 1 A silver plating layer having a thickness of 20 μm was formed on the surface of a threaded portion of a union nut made of stainless steel.
Heated at C for 6 hours. The intensity of the diffracted X-ray diffracted on the (200) plane of the silver plating layer was 66, where the intensity of the diffracted X-ray diffracted on the (111) plane was 100.
【００１２】実施例２ ステンレス鋼からなるユニオンナットのねじ部の表面に
厚さ２０μｍの銀メッキ層を形成した後、これを５５０
℃で６時間加熱した。銀メッキ層の（２００）面で回折
された回折Ｘ線の強度は、（１１１）面で回折された回
折Ｘ線の強度を１００とした場合、６７であった。EXAMPLE 2 A silver plating layer having a thickness of 20 μm was formed on the surface of the threaded portion of a union nut made of stainless steel, and this was plated with 550.
Heated at C for 6 hours. The intensity of the diffracted X-ray diffracted on the (200) plane of the silver plating layer was 67 when the intensity of the diffracted X-ray diffracted on the (111) plane was set to 100.
【００１３】実施例３ ステンレス鋼からなるユニオンナットのねじ部の表面に
厚さ２０μｍの銀メッキ層を形成した後、これを５５０
℃で２時間加熱した。銀メッキ層の（２００）面で回折
された回折Ｘ線の強度は、（１１１）面で回折された回
折Ｘ線の強度を１００とした場合、４０であった。Example 3 A silver plating layer having a thickness of 20 μm was formed on the surface of the threaded portion of a union nut made of stainless steel.
Heated at ° C for 2 hours. The intensity of the diffracted X-ray diffracted on the (200) plane of the silver plating layer was 40 when the intensity of the diffracted X-ray diffracted on the (111) plane was 100.
【００１４】比較例１ ステンレス鋼からなるユニオンナットのねじ部の表面に
厚さ２０μｍの銀メッキ層を形成した後、これを２００
℃で６時間加熱した。銀メッキ層の（２００）面で回折
された回折Ｘ線の強度は、（１１１）面で回折された回
折Ｘ線の強度を１００とした場合、２５であった。Comparative Example 1 A silver plating layer having a thickness of 20 μm was formed on the surface of the thread portion of a union nut made of stainless steel.
Heated at C for 6 hours. The intensity of the diffracted X-ray diffracted on the (200) plane of the silver plating layer was 25 when the intensity of the diffracted X-ray diffracted on the (111) plane was 100.
【００１５】比較例２ ステンレス鋼からなるユニオンナットのねじ部の表面に
厚さ２０μｍの銀メッキ層を形成した。銀メッキ層の
（２００）面で回折された回折Ｘ線の強度は、（１１
１）面で回折された回折Ｘ線の強度を１００とした場
合、４であった。Comparative Example 2 A silver plating layer having a thickness of 20 μm was formed on the surface of the thread portion of a union nut made of stainless steel. The intensity of the diffracted X-ray diffracted on the (200) plane of the silver plating layer is (11
1) Assuming that the intensity of the diffracted X-ray diffracted on the surface was 100, it was 4.
【００１６】評価試験 上記実施例１〜３および比較例１〜２のユニオンナット
と、ステンレス鋼製ユニオンねじを使用し、締め付けお
よび戻しを１つの工程としてこの工程を１０回繰り返し
て行なった。そして、１回目の締め付けに要するトルク
と１０回目の締め付けに要するトルクとを比較した。そ
の結果、実施例１〜３では、両トルクはほとんど変化し
ていなかった。これに対し、比較例１および２では、１
０回目の締め付けに要するトルクは１回目の締め付けに
要するトルクの１．５倍となっていた。Evaluation Test Using the union nuts of Examples 1 to 3 and Comparative Examples 1 and 2 and a stainless steel union screw, tightening and returning were performed as one step, and this step was repeated 10 times. Then, the torque required for the first tightening and the torque required for the tenth tightening were compared. As a result, in Examples 1 to 3, both torques hardly changed. In contrast, in Comparative Examples 1 and 2, 1
The torque required for the 0th tightening was 1.5 times the torque required for the 1st tightening.
【００１７】また、１回目の戻しに要するトルクと１０
回目の戻しに要するトルクとを比較した。その結果、実
施例１〜３では、両トルクはほとんど変化していなかっ
た。これに対し、比較例１および２では、１０回目の戻
しに要するトルクは１回目の戻しに要するトルクの１．
５倍となっていた。Further, the torque required for the first return and 10
The torque required for the second return was compared. As a result, in Examples 1 to 3, both torques hardly changed. On the other hand, in Comparative Examples 1 and 2, the torque required for the 10th return is 1% of the torque required for the first return.
It was five times.
【００１８】上記結果から、実施例１〜３では、締め付
けトルクによる締め付け軸力の管理を行うことが可能に
なって、締め付けおよび戻しを繰り返して行なった場合
にも、常に所定の締め付け軸力を得られるとともに、戻
しトルクの増大を防止できることが分る。From the above results, in the first to third embodiments, it is possible to manage the tightening axial force by the tightening torque, and even when the tightening and returning are repeatedly performed, the predetermined axial force is always maintained. It can be understood that the return torque can be prevented from increasing.
【００１９】[0019]
【発明の効果】この発明の摺動部品によれば、上述のよ
うに、摺動を繰り返して行なったとしても、摩擦抵抗が
大きくなることはない。したがって、長期間にわたって
摺動性能を維持することができる。According to the sliding component of the present invention, as described above, even if sliding is repeated, the frictional resistance does not increase. Therefore, the sliding performance can be maintained for a long time.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山路 道雄 大阪市西区立売堀２丁目３番２号 株式 会社フジキン内 (72)発明者 篠原 努 大阪市西区立売堀２丁目３番２号 株式 会社フジキン内 (72)発明者 森本 明弘 大阪市西区立売堀２丁目３番２号 株式 会社フジキン内 審査官 鈴木 正紀 (56)参考文献 特開 平５−2940（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C23C 30/00 F16L 19/00 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Michio Yamaji, 2-3-2, Noribori, Nishi-ku, Osaka-shi Fujikin Co., Ltd. 72) Inventor Akihiro Morimoto 2-3-2, Noribori, Nishi-ku, Osaka Examiner, Fujikin Co., Ltd. Masaki Suzuki (56) References JP-A-5-2940 (JP, A) (58) Fields investigated (Int. . 7, DB name) C23C 30/00 F16L 19/00
Claims (1)
品と摺動する面に銀メッキ層が形成され、この銀メッキ
層が、その（２００）面で回折された回折Ｘ線の強度が
（１１１）面で回折された回折Ｘ線の強度の１／３以上
となるような結晶構造を有している摺動部品。1. A silver plating layer is formed on a surface of a metal sliding component body that slides with another metal component, and the silver plating layer has an intensity of diffracted X-rays diffracted on its (200) plane. A sliding component having a crystal structure such that the intensity of the diffracted X-ray diffracted on the (111) plane is 1/3 or more.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33394793A JP3334011B2 (en) | 1993-06-11 | 1993-12-28 | Sliding parts |
| KR1019940036758A KR100350937B1 (en) | 1993-12-28 | 1994-12-26 | Sliding parts and manufacturing method |
| EP94120790A EP0661471B1 (en) | 1993-12-28 | 1994-12-27 | Sliding parts and method of producing same |
| TW087219480U TW420265U (en) | 1993-12-28 | 1994-12-27 | Sliding parts |
| DE69409932T DE69409932T2 (en) | 1993-12-28 | 1994-12-27 | Sliding components and processes for their manufacture |
| TW083112216A TW334499B (en) | 1993-12-28 | 1994-12-27 | The method of manufacturing sliding parts |
| US08/365,452 US5520492A (en) | 1993-12-28 | 1994-12-28 | Sliding parts and method of producing same |
| CA002139207A CA2139207C (en) | 1993-12-28 | 1994-12-28 | Sliding parts and method of producing same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14088293 | 1993-06-11 | ||
| JP5-140882 | 1993-06-11 | ||
| JP33394793A JP3334011B2 (en) | 1993-06-11 | 1993-12-28 | Sliding parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0754165A JPH0754165A (en) | 1995-02-28 |
| JP3334011B2 true JP3334011B2 (en) | 2002-10-15 |
Family
ID=26473264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33394793A Expired - Lifetime JP3334011B2 (en) | 1993-06-11 | 1993-12-28 | Sliding parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3334011B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3444981B2 (en) * | 1994-08-29 | 2003-09-08 | 忠弘 大見 | Lead frame and lead frame material |
| JP5123240B2 (en) * | 2009-03-24 | 2013-01-23 | 大同メタル工業株式会社 | Sliding member |
| JP5988822B2 (en) | 2012-10-19 | 2016-09-07 | 株式会社フジキン | Pipe fitting |
| JP6642976B2 (en) * | 2015-03-31 | 2020-02-12 | 株式会社フジキン | Pipe fitting, fluid controller, fluid control device, and semiconductor manufacturing device |
-
1993
- 1993-12-28 JP JP33394793A patent/JP3334011B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0754165A (en) | 1995-02-28 |
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