JPS5986752A - Piston ring construction - Google Patents

Piston ring construction

Info

Publication number
JPS5986752A
JPS5986752A JP57197174A JP19717482A JPS5986752A JP S5986752 A JPS5986752 A JP S5986752A JP 57197174 A JP57197174 A JP 57197174A JP 19717482 A JP19717482 A JP 19717482A JP S5986752 A JPS5986752 A JP S5986752A
Authority
JP
Japan
Prior art keywords
piston ring
side wall
groove
sprayed layer
metal
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.)
Pending
Application number
JP57197174A
Other languages
Japanese (ja)
Inventor
Ryoichi Yamaoka
山岡 良一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP57197174A priority Critical patent/JPS5986752A/en
Publication of JPS5986752A publication Critical patent/JPS5986752A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J9/00Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/26Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To prevent a metal flame sprayed layer from being peeled off by a method wherein the lower side wall of a groove which is formed on the external periphery of a taper face piston ring to provide a metallic melting layer therein is made slant downward while the sealing surface of a piston ring base metal and the metal flame sprayed layer is expanded. CONSTITUTION:A taper face type piston ring 14 is cut off at a lower edge 18 of the external periphery 15 to form a flat face F against a taper face T. A circular groove 24 is formed along the external periphery 15 to form a metal flame sprayed layer 30 constituting a part of said periphery 15 by means of flame spraying process. At this time, the upper side wall 26 is made slightly slant upward while the lower side wall 28 is made remarkably slant downward. Through these procedures, the sealing surface of the lower side wall 28 may be prevented from being peeled off by means of expanding the area of the lower side wall 28 to enlarge the contact area of the metal flame sprayed layer 30 with the piston ring base metal 14.

Description

【発明の詳細な説明】 本発明は、ピストンリングに係わり、特にテーパフェイ
ス型ピストンリングの下縁が切落されて千坦忙形成され
たピストンリング構造に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piston ring, and more particularly to a piston ring structure in which the lower edge of a tapered face piston ring is cut off to form a zigzag shape.

従来、テーパフェイス型ピストンリング外周の下縁に作
用する面圧を少なくする為に、その下縁を切落して平坦
面を形成したピストンリングが使用されている。また、
このようなピストンリングの外周面に溝を形成し、この
溝に溶射加工により溶射層を形成し、外周面の耐摩耗、
耐スカツフ性を向ヒさせたピストンリングが提案されて
いる。
Conventionally, in order to reduce the surface pressure acting on the lower edge of the outer periphery of a tapered face type piston ring, a piston ring has been used in which the lower edge is cut off to form a flat surface. Also,
A groove is formed on the outer circumferential surface of such a piston ring, and a thermal spray layer is formed on this groove by thermal spraying to improve the wear resistance of the outer circumferential surface.
Piston rings with improved scuff resistance have been proposed.

このように構成されたピストンリングに於いては平坦面
がシリンダとの間で摩擦抵抗を受け、また平坦面がシリ
ンダ内周面とのfmi突により衝撃力を受けると、平坦
面に於いてピストンリング母相と溶射層との接合部で破
壊を起むし、溶射層はピストンリングの母材から剥離す
る恐れがある。このような不具合を避けるために溶射層
の幅を短くし、ピストンリングのテーパ面の部分にOみ
溶射層を形成することも考えられるが、大きな摺動抵抗
を受ける平坦面に溶射層が形成されないとピストンリン
グ外周の4序れ;性並びに4スカツフi性が悪くなる。
In a piston ring configured in this way, the flat surface receives frictional resistance between it and the cylinder, and when the flat surface receives an impact force due to fmi collision with the inner peripheral surface of the cylinder, the piston on the flat surface Failure occurs at the joint between the ring matrix and the sprayed layer, and there is a risk that the sprayed layer may separate from the piston ring base material. In order to avoid such problems, it is possible to shorten the width of the sprayed layer and form a sprayed layer on the tapered surface of the piston ring. If not, the piston ring outer periphery's alignment and scuffing properties will deteriorate.

本発明はこのような事情に鑑みてなさ1れたもので°、
溶射層が外周面に形成されたピスト1ンリングに於いて
溶剤層が剥離しないピストンリングを提案することを目
的としている。
The present invention was made in view of these circumstances.
It is an object of the present invention to propose a piston ring in which a solvent layer does not peel off in a piston ring having a thermally sprayed layer formed on the outer circumferential surface.

本発明は前記目的を達成するためにピストンリングの外
周面に形成されると共に溶射層が形成される溝の下側壁
を下方に傾斜させ、下側壁の面積を大きくとることによ
りピストンリングの母材と溶射金属との接合面積を太き
く形成したことを特徴としている。
In order to achieve the above object, the present invention makes the lower wall of the groove formed on the outer circumferential surface of the piston ring and in which the thermal sprayed layer is formed slope downward, and the area of the lower wall is increased to increase the area of the base material of the piston ring. It is characterized by a large joint area between the metal and the sprayed metal.

以下添付図面に従って本発明に係わるピストンリング構
造の好ましい実施例を詳説する。
Preferred embodiments of the piston ring structure according to the present invention will be described in detail below with reference to the accompanying drawings.

第1図ではピストン10の正面形状が示されており、こ
のピストンには3木のピストンリング12.14.16
が装着されている。セカンドピストンリング14は、第
2図に示すようにテーパフェイス型ピストンリング外周
面150下縁18が切落され、テーバ面Tに対して平坦
面Fが形成される。ピストンリング14は鋳鉄製である
FIG. 1 shows the front shape of a piston 10, which includes three wooden piston rings 12, 14, and 16.
is installed. In the second piston ring 14, as shown in FIG. 2, the lower edge 18 of the tapered face type piston ring outer peripheral surface 150 is cut off, and a flat surface F is formed with respect to the tapered surface T. Piston ring 14 is made of cast iron.

ピストンリング14の外周面15には、外周面15に沿
って環状に′fI24が形成される。溝24に於いて、
]−側の側壁26は上方に向けて若干傾斜し、下側の側
壁28は下方に向けて大きく傾斜している。溝24に溶
射加工を施すには、溶射加工の前処理として溝24の内
面に、ニッケル粉末並びにアルミ、−、ラム粉末のrI
L台粉米粉末布する。
An annular 'fI24 is formed on the outer circumferential surface 15 of the piston ring 14 along the outer circumferential surface 15. In the groove 24,
] The side wall 26 on the negative side is slightly inclined upward, and the side wall 28 on the lower side is greatly inclined downward. In order to perform thermal spraying on the groove 24, the inner surface of the groove 24 is coated with nickel powder, aluminum, -, and ram powder as a pretreatment for thermal spraying.
L powder rice powder cloth.

次に図示しない溶り41装買を用いてフェロクロ人とモ
リブデンかr)f!る溶射金属を溝に吹き付は溶射1轡
30を形成4る。この場合混合粉末は溶射加工時の加熱
により溶融し溶射全屈とピストンリング14の母材との
4と脊面を形成する。
Next, using a melting device (not shown), ferrochlore and molybdenum r) f! The sprayed metal is sprayed into the groove to form a sprayed layer 30. In this case, the mixed powder is melted by heating during the thermal spraying process and forms the thermal sprayed full bend and the base material 4 of the piston ring 14 and the spine surface.

前記実施例によれば、従来破壊し易い接合部であった溝
の下側p、’i 2 F+の面積が広がって溶射I商3
0とピストンリング14の母材との接触面積が大きくな
るので、シリンダとの摺動抵抗並びにシリンダからの打
撃を受けても下側壁28の接合部が破が傾11. t−
ている為薄Wlに形成され、従って平坦面Fがシリンダ
から打撃を受はピストンリング母相が弾性変形しても溶
射層30は薄層である為旬月の変形に追従することがで
きる。従って、平坦面Fに於ける溶射層30と下側壁2
8との接合部は破壊しにくい。
According to the above embodiment, the area of the lower side p, 'i 2 F+ of the groove, which was a joint that was conventionally easy to break, is expanded, and the thermal spray I quotient is 3.
Since the contact area between the piston ring 14 and the base material of the piston ring 14 becomes large, the joint part of the lower wall 28 will not break even if it receives sliding resistance from the cylinder and a blow from the cylinder. t-
Therefore, even if the piston ring matrix is elastically deformed when the flat surface F receives a blow from the cylinder, the sprayed layer 30 is thin and can follow the deformation of the piston ring. Therefore, the sprayed layer 30 and the lower wall 2 on the flat surface F
The joint with 8 is difficult to break.

以と説明したよう(本発明に係わるピストンリングによ
れば、テーパフェイス型ピストンリングの下縁が切落さ
れて平坦に形成され、該ピストンリングの外周面に溝が
形成され、核部には溶射加工忙よりピストンリングの外
周面の一部をなす金属溶射層が形成されたピストンリン
グに於いて、前記溝の下側壁を下方に傾斜させて溝の下
側壁と溶射金属との接触面を大きくしたので、溝の下側
壁の接合部が破壊するようなことはない。
As explained above (according to the piston ring according to the present invention, the lower edge of the tapered face type piston ring is cut off and formed flat, a groove is formed on the outer peripheral surface of the piston ring, and a core portion is formed with a groove). In a piston ring on which a metal sprayed layer forming a part of the outer peripheral surface of the piston ring is formed due to thermal spraying, the lower wall of the groove is inclined downward to improve the contact surface between the lower wall of the groove and the sprayed metal. Since it is made larger, the joint on the lower wall of the groove will not be destroyed.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はピストンの形状を示す正面図、第2図は本発明
に係わるピストンリングの実施例の構造を示す図面で第
1図のA部拡大図である。 10・・・ピストン、   14・・・ピストンリング
18・・・ピストンリングの下縁 ′1゛・・・デーパ面、    F・・・平坦面24・
・・溝、      26・・・溝の上側壁28・・・
溝の下側壁、  30・・・溶射層。 代理人 弁理士 松 浦 憲 三 第1図
FIG. 1 is a front view showing the shape of a piston, and FIG. 2 is an enlarged view of section A in FIG. 1, showing the structure of an embodiment of a piston ring according to the present invention. 10...Piston, 14...Piston ring 18...Lower edge of piston ring'1''...Tapered surface, F...Flat surface 24...
... Groove, 26... Upper wall of the groove 28...
Lower wall of the groove, 30... sprayed layer. Agent: Kenzo Matsuura, Patent Attorney Figure 1

Claims (1)

【特許請求の範囲】[Claims] テーパフェイス型ピストンリングの下縁が切落されて平
坦に形成され、核ピストンリングの外周面には溝が形成
され、該溝には溶射加工によりピストンリングの外周面
の一部をなす金属溶射層が形成されたピストンリング構
造に於いて、溝の下側の側壁を下方に傾斜させ、ピスト
ンリング母料と金属溶射層との接合面を太きくしたこと
を特徴とするピストンリング構造。
The lower edge of the tapered face type piston ring is cut off to make it flat, and a groove is formed on the outer peripheral surface of the core piston ring, and the groove is sprayed with metal that forms part of the outer peripheral surface of the piston ring by thermal spraying. A piston ring structure having a layered piston ring structure, characterized in that the lower side wall of the groove is inclined downward, and the joint surface between the piston ring base material and the metal sprayed layer is made thicker.
JP57197174A 1982-11-10 1982-11-10 Piston ring construction Pending JPS5986752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57197174A JPS5986752A (en) 1982-11-10 1982-11-10 Piston ring construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57197174A JPS5986752A (en) 1982-11-10 1982-11-10 Piston ring construction

Publications (1)

Publication Number Publication Date
JPS5986752A true JPS5986752A (en) 1984-05-19

Family

ID=16370023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57197174A Pending JPS5986752A (en) 1982-11-10 1982-11-10 Piston ring construction

Country Status (1)

Country Link
JP (1) JPS5986752A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009287730A (en) * 2008-05-30 2009-12-10 Nippon Piston Ring Co Ltd Piston ring
JPWO2011064888A1 (en) * 2009-11-30 2013-04-11 日本ピストンリング株式会社 piston ring
JP2013540967A (en) * 2010-10-07 2013-11-07 フェデラル−モーグル ブルシャイト ゲゼルシャフト ミット ベシュレンクテル ハフツング Piston ring manufacturing method
JP2013540968A (en) * 2010-10-08 2013-11-07 フェデラル−モーグル ブルシャイト ゲゼルシャフト ミット ベシュレンクテル ハフツング Piston ring manufacturing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009287730A (en) * 2008-05-30 2009-12-10 Nippon Piston Ring Co Ltd Piston ring
JPWO2011064888A1 (en) * 2009-11-30 2013-04-11 日本ピストンリング株式会社 piston ring
JP5557850B2 (en) * 2009-11-30 2014-07-23 日本ピストンリング株式会社 piston ring
JP2013540967A (en) * 2010-10-07 2013-11-07 フェデラル−モーグル ブルシャイト ゲゼルシャフト ミット ベシュレンクテル ハフツング Piston ring manufacturing method
US9132517B2 (en) 2010-10-07 2015-09-15 Federal-Mogul Burscheid Gmbh Method for producing a piston ring
JP2013540968A (en) * 2010-10-08 2013-11-07 フェデラル−モーグル ブルシャイト ゲゼルシャフト ミット ベシュレンクテル ハフツング Piston ring manufacturing method

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