JPH0544840A - Compression ring and manufacture thereof - Google Patents
Compression ring and manufacture thereofInfo
- Publication number
- JPH0544840A JPH0544840A JP22881891A JP22881891A JPH0544840A JP H0544840 A JPH0544840 A JP H0544840A JP 22881891 A JP22881891 A JP 22881891A JP 22881891 A JP22881891 A JP 22881891A JP H0544840 A JPH0544840 A JP H0544840A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- treatment
- peripheral surface
- abutment
- layer
- 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.)
- Granted
Links
- 230000006835 compression Effects 0.000 title claims abstract description 23
- 238000007906 compression Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 44
- 238000005121 nitriding Methods 0.000 claims abstract description 35
- 239000010410 layer Substances 0.000 claims description 31
- 150000002500 ions Chemical group 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 238000007747 plating Methods 0.000 claims description 14
- 150000004767 nitrides Chemical class 0.000 claims description 11
- 239000002335 surface treatment layer Substances 0.000 claims description 10
- 238000004381 surface treatment Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- LDHBWEYLDHLIBQ-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide;hydrate Chemical compound O.[OH-].[O-2].[Fe+3] LDHBWEYLDHLIBQ-UHFFFAOYSA-M 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 claims 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内燃機関や圧縮機に用
いられるコンプレッションリングおよびその製造方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compression ring used in an internal combustion engine or a compressor and a method for manufacturing the compression ring.
【０００２】[0002]
【従来の技術】近年、コンプレッションリングに窒化処
理が行われている。そして、窒化はガス窒化や塩浴窒化
で行われており、この方法によれば、外周面のみなら
ず、上下面および内周面も窒化されてしまう。2. Description of the Related Art In recent years, compression rings have been subjected to nitriding treatment. Nitriding is performed by gas nitriding or salt bath nitriding. According to this method, not only the outer peripheral surface but also the upper and lower surfaces and the inner peripheral surface are nitrided.
【０００３】[0003]
【発明が解決しようとする課題】このように、リング断
面全周に窒化が入るため、リング幅が薄く、しかも合口
端部に切欠部を有するリングに厚窒化を施すと、合口端
部の断面積の小さい切欠部の部分は窒化によってぜい性
が増し、強度が落ち、その部分から折損するおそれが生
じる。そのため、リングの薄幅化と高耐摩耗性の要求に
応えることができない。As described above, since nitriding enters the entire circumference of the ring cross section, if the ring width is thin and the ring having a notch at the abutment end is thickly nitrided, the abutment end is cut off. Nitriding increases the brittleness of the notch portion having a small area, and the strength thereof is reduced, so that the portion may be broken. Therefore, it is not possible to meet the demands for ring thinning and high wear resistance.
【０００４】本発明の目的は、合口端部に切欠部を有す
るコンプレッションリングにおいて、折損強度を保持し
てリングの薄幅化と耐摩耗性の要求に応えることにあ
る。An object of the present invention is to provide a compression ring having a notch at the abutment end to maintain breakage strength and meet the requirements for ring thinning and wear resistance.
【０００５】[0005]
【課題を解決するための手段】本発明は、合口端部に切
欠部を有するコンプレッションリングにおいて、窒化層
を外周面にのみ形成し、上下面あるいは上下面と内周面
は軟質表面処理層を形成し、前記窒化層がイオン窒化処
理層であることを特徴とする。According to the present invention, in a compression ring having a cutout at the end of the abutment, a nitride layer is formed only on the outer peripheral surface, and a soft surface treatment layer is formed on the upper and lower surfaces or the upper and lower surfaces and the inner peripheral surface. It is characterized in that the nitride layer is an ion-nitriding layer.
【０００６】そして、本発明のコンプレッションリング
の製造方法は、リング素材をコイリング成形する工程
と、コイリング材を合口切断する工程と、リング材の合
口端部を加工する工程と、コイリング材あるいは合口切
断されているリング材にイオン窒化処理を施して外周面
にのみ窒化層を形成する工程と、軟質表面処理を施して
上下面あるいは上下面と内周面に軟質表面処理層を形成
する工程と、上記処理を施し合口部を備えたリング材に
仕上加工を施す工程とを備えたことを特徴とする。The method of manufacturing a compression ring according to the present invention comprises the steps of coiling a ring material, cutting the coiling material in abutment, processing the abutment end of the ring material, and coiling material or abutment cutting. A step of forming a nitride layer only on the outer peripheral surface by subjecting the ring material to an ion nitriding treatment, and a step of forming a soft surface treated layer on the upper and lower surfaces or the upper and lower surfaces and the inner peripheral surface by performing a soft surface treatment, And a step of subjecting the ring material having the abutment portion to the above-mentioned treatment and finishing.
【０００７】上記軟質表面処理としては、りん酸塩被膜
処理、フェロックス被膜処理、硫化物被膜処理、すずめ
っき、軟質合金めっき、銅めっき、ふっ化樹脂被膜処
理、あるいはこれらの複合被膜処理を施す。As the soft surface treatment, a phosphate coating treatment, a ferrox coating treatment, a sulfide coating treatment, tin plating, a soft alloy plating, a copper plating, a fluororesin coating treatment, or a composite coating treatment of these is applied. ..
【０００８】[0008]
【作用】コンプレッションリングは、外周面にのみイオ
ン窒化処理層が設けられているのでシリンダとの摺動に
対して耐摩耗性がよく、上下面あるいは上下面と内周面
は軟質表面処理層を形成してあるので耐食性に優れると
ともにオイルリング溝の異常摩耗を防止できる。The compression ring has an ion nitriding layer only on the outer peripheral surface, so it has good wear resistance against sliding on the cylinder, and the upper and lower surfaces, or the upper and lower surfaces and the inner peripheral surface have a soft surface treating layer. Since it is formed, it has excellent corrosion resistance and can prevent abnormal wear of the oil ring groove.
【０００９】そして窒化処理として、処理の指向性を有
するイオン窒化処理を選択したことにより、特別の窒化
防止処理あるいは窒化層の除去加工を施すことなく、コ
ンプレッションリングの上下面、内周面を窒化させず
に、外周面にのみ窒化を容易に施すことができる。そし
て、外周面にのみ窒化を行えるため、合口端部に切欠部
を有しリング幅の薄いリングに厚窒化を施しても、合口
端部の断面積の小さい切欠部の部分の折損強度を保持で
き、リング幅の薄い、折損強度のある、耐摩耗性に優れ
たリングを得られる。特に、リング幅１．２ｍｍ以下、
窒化層厚さ７０μｍ以上で効果が大きい。As the nitriding treatment, an ion nitriding treatment having a directivity of treatment is selected, so that the upper and lower surfaces and the inner peripheral surface of the compression ring are nitrided without any special nitriding preventing treatment or removing treatment of the nitrided layer. Without doing so, nitriding can be easily performed only on the outer peripheral surface. Since nitriding can be performed only on the outer peripheral surface, even if a ring with a cutout at the abutment end and a narrow ring width is thickly nitrided, the breakage strength of the cutout portion with a small cross-sectional area at the abutment end is maintained. It is possible to obtain a ring having a narrow ring width, breakage strength, and excellent wear resistance. In particular, ring width 1.2 mm or less,
The effect is great when the thickness of the nitride layer is 70 μm or more.
【００１０】[0010]
【実施例】図２において、アルミニウム合金製ピストン
１の外周面には２つのコンプレッションリング溝２Ａ，
３Ａと１つのオイルリング溝４Ａが形成されており、最
上方のコンプレッションリング溝２Ａにはトップリング
２が、その下のコンプレッションリング溝３Ａにはセカ
ンドリング３が、その下のオイルリング溝４Ａにはオイ
ルリング４が装着されている。EXAMPLE In FIG. 2, two compression ring grooves 2A,
3A and one oil ring groove 4A are formed. The top ring 2 is in the uppermost compression ring groove 2A, the second ring 3 is in the lower compression ring groove 3A, and the lower oil ring groove 4A is in the lower compression ring groove 3A. Is equipped with an oil ring 4.
【００１１】トップリング２は外周がバレル形状で直角
合口構造をなし、外周面にのみイオン窒化処理層５を形
成してあり、シリンダ１９の内壁面２０に押接してい
る。リング上下面と内周面は軟質表面処理層２１を形成
している。The top ring 2 has a barrel-shaped outer periphery and has a right angle abutment structure, an ion nitriding layer 5 is formed only on the outer peripheral surface, and is pressed against the inner wall surface 20 of the cylinder 19. The upper and lower surfaces of the ring and the inner peripheral surface form a soft surface treatment layer 21.
【００１２】セカンドリング３は合口端部に切欠部を有
する構造を有し、外周面にのみイオン窒化処理層６を形
成してあり、シリンダ１９の内壁面２０に押接してい
る。リング上下面と内周面は軟質表面処理層２２を形成
している。The second ring 3 has a structure having a notch at the end of the joint, has an ion nitriding layer 6 formed only on the outer peripheral surface, and is pressed against the inner wall surface 20 of the cylinder 19. The upper and lower surfaces of the ring and the inner peripheral surface form a soft surface treatment layer 22.
【００１３】そしてセカンドリング３の合口構造は、図
１に示すように、一方の合口端部のリング上面にリング
外周面と合口端面８に開放する切欠部９が形成されてい
る。そして、他方の合口端部にも切欠部が形成されて、
合口端部の合口端面１０の前記切欠部９に対向する位置
に切欠部９に配置される突出部１１を突出形成してな
る。切欠部９と突出部１１は半径方向に切った縦断面が
同一の三角形状をなしており、切欠部９の斜面１２に突
出部１１の斜面１３が配置し、両合口端面８，１０間に
所定の合口隙間を有してリング溝３Ａに装着されてい
る。なお、切欠部９と突出部１１の断面形状は上記では
三角形状のものを示したが、これに限ることはなく、こ
の他例えば矩形形状などその形状は問わない。In the abutment structure of the second ring 3, as shown in FIG. 1, a notch 9 which is open to the ring outer peripheral surface and the abutment end face 8 is formed on the ring upper surface at one abutment end. And a notch is formed at the other end of the joint,
A projecting portion 11 arranged in the cutout portion 9 is formed so as to project at a position of the abutment end surface 10 facing the cutout portion 9 of the abutment end portion. The notch 9 and the protrusion 11 have a triangular shape with the same vertical cross section cut in the radial direction, and the slope 13 of the protrusion 11 is arranged on the slope 12 of the notch 9 so that the gaps between the abutment end faces 8 and 10 are the same. The ring groove 3A is mounted with a predetermined gap. It should be noted that the cross-sectional shapes of the notch 9 and the protrusion 11 have been described above as triangular shapes, but the shape is not limited to this, and other shapes such as a rectangular shape may be used.
【００１４】オイルリング４は２ピース構成の鋼製組合
せオイルリングで、上下にレール１４，１５を備えた断
面略Ｉ字形状のオイルリング本体１６と、オイルリング
本体１６の内周に嵌装されたコイルエキスパンダ１７と
からなり、外周面に硬質クロムめっき１８を形成したレ
ール１４，１５はコイルエキスパンダ１７によりシリン
ダ１９の内壁面２０に押接される。オイルリング本体１
６の外周面以外の表面は軟質表面処理層２３を形成して
いる。The oil ring 4 is a two-piece steel combination oil ring, which is fitted to the inner circumference of the oil ring body 16 and the oil ring body 16 having upper and lower rails 14 and 15 having a substantially I-shaped cross section. The rails 14 and 15 each having a coil expander 17 and a hard chromium plating 18 formed on the outer peripheral surface are pressed against the inner wall surface 20 of the cylinder 19 by the coil expander 17. Oil ring body 1
A surface other than the outer peripheral surface of 6 has a soft surface treatment layer 23 formed thereon.
【００１５】以下に上記セカンドリング３の製造方法の
一例を説明する。マルテンサイト系ステンレス鋼線材に
て、コイリング材を作製し、これを合口切断した後、合
口端部の切欠加工を行い、次に複数個のリング材を円筒
治具の外周に挿入してスタック状とし、これの両端をク
ランプ円板で軸方向に締め付け固定した後、イオン窒化
炉で外周面の窒化処理を行った。イオン窒化の条件は例
えば、 雰囲気ガス組成 窒素：水素＝７：３ ワーク温度 ５００℃ これにより、ＨV ７００以上の深さ７０μｍのイオン窒
化処理層をリング外周面に得た。An example of the method of manufacturing the second ring 3 will be described below. A coiling material is made from a martensitic stainless steel wire rod, this is cut at the abutment, and the end of the abutment is notched, then multiple ring materials are inserted into the outer circumference of the cylindrical jig to form a stack. After both ends thereof were clamped and fixed by clamp disks in the axial direction, the outer peripheral surface was nitrided in an ion nitriding furnace. Conditions of the ion nitriding, for example, ambient gas composition nitrogen: hydrogen = 7: Thus 3 work temperature 500 ° C., to obtain an ion nitriding layer of H V 700 or more depth 70μm in the ring outer peripheral surface.
【００１６】なお、外周面のイオン窒化処理はコイリン
グ材の段階で行うこともできる。Incidentally, the ion nitriding treatment of the outer peripheral surface can be carried out at the stage of the coiling material.
【００１７】イオン窒化は放電がワーク外周面にのみ発
生するので、リング外周は窒化されるが、上下面はワー
ク同士が接触して隙間がなく、内周は治具の筒面に接し
ているため、放電は発生せず、上下面、内周面に窒化層
のないリングを得ることができる。In ion nitriding, since discharge occurs only on the outer peripheral surface of the work, the outer periphery of the ring is nitrided, but the upper and lower surfaces are in contact with each other and there is no gap, and the inner periphery is in contact with the cylindrical surface of the jig. Therefore, no discharge is generated and a ring having no nitride layer on the upper and lower surfaces and the inner peripheral surface can be obtained.
【００１８】イオン窒化処理後、上下面と内周面に軟質
表面処理層を形成した。軟質表面処理としては、りん酸
塩被膜処理、フェロックス被膜処理、硫化物被膜処理、
すずめっき、軟質合金めっき、銅めっき、ふっ化樹脂被
膜処理、あるいはこれらの複合被膜処理を施す。After the ion nitriding treatment, soft surface treatment layers were formed on the upper and lower surfaces and the inner peripheral surface. As the soft surface treatment, phosphate coating treatment, ferrox coating treatment, sulfide coating treatment,
Tin plating, soft alloy plating, copper plating, fluororesin film treatment, or a composite film treatment of these is performed.
【００１９】その後常法により仕上げた。Thereafter, it was finished by a conventional method.
【００２０】なお、本発明の適用される合口端部の構造
は、上記で示したものに限ることは勿論なく、この他例
えば図３、図４、図５に示すものなどがある。図３に示
すものは段付合口構造で、一方の合口端部の下部に切欠
部３０を有し、他方の合口端部の上部に切欠部３１を有
して、合口端部がそれぞれ段付状をなし、それぞれの合
口端部の突出部３２，３３が上下に配置するもので、リ
ング外周面にのみイオン窒化処理層６Ａが形成され、リ
ング上下面と内周面は軟質表面処理層２２Ａを形成して
いる。The structure of the abutment end to which the present invention is applied is not limited to the structure shown above, and other structures such as those shown in FIGS. 3, 4 and 5 are also available. FIG. 3 shows a stepped abutment structure, which has a notch 30 at the bottom of one abutment end and a notch 31 at the top of the other abutment end so that each abutment end is stepped. The protrusions 32 and 33 of the respective abutting end portions are arranged vertically, and the ion nitriding layer 6A is formed only on the outer peripheral surface of the ring. Is formed.
【００２１】図４、図５に示すものはリングの回り止め
としての合口端部構造で、図４は側面回り止めを示し、
両合口端部の上面端部に切欠部３４，３５を有し、それ
らの切欠部３４，３５に回り止めピン３６（ピストンの
リング溝部に突設される）が配置するもので、リング外
周面にのみイオン窒化処理層６Ｂが形成され、リング上
下面と内周面は軟質表面処理層２２Ｂを形成し、図５は
内周回り止めを示し、両合口端部の内周端部に切欠部３
７，３８を有し、それらの切欠部３７，３８に回り止め
ピン３９（ピストンのリング溝部に突設される）が配置
するもので、リング外周面にのみイオン窒化処理層６Ｃ
が形成され、リング上下面と内周面は軟質表面処理層２
２Ｃを形成している。FIGS. 4 and 5 show the structure of the abutment end portion as a ring detent, and FIG. 4 shows a side detent.
The outer peripheral surface of the ring has cutouts 34 and 35 at the upper end of both mating end portions, and rotation stop pins 36 (protrudingly provided in the ring groove of the piston) are arranged in the cutouts 34 and 35. The ion nitriding layer 6B is formed only on the upper surface of the ring, and the upper and lower surfaces of the ring and the inner peripheral surface form the soft surface treating layer 22B. FIG. Three
7 and 38, and the rotation stop pins 39 (protrudingly provided in the ring groove portion of the piston) are arranged in the cutout portions 37 and 38, and the ion nitriding layer 6C is provided only on the outer peripheral surface of the ring.
Is formed, and the upper and lower surfaces of the ring and the inner peripheral surface are formed by the soft surface treatment layer 2
2C is formed.
【００２２】なお、上記では、切欠部を有する合口端部
構造をセカンドリング３に適用した例を示したが、トッ
プリングなどの他のコンプレッションリングに適用する
ことができることは言うまでもない。そしてその場合、
リング外周面にのみイオン窒化処理層を形成し、リング
上下面あるいはリング上下面と内周面に軟質表面処理層
を形成する。In the above description, an example in which the abutting end structure having a notch is applied to the second ring 3 has been shown, but it goes without saying that it can be applied to other compression rings such as a top ring. And in that case
The ion nitriding layer is formed only on the outer peripheral surface of the ring, and the soft surface treating layer is formed on the upper and lower surfaces of the ring or on the upper and lower surfaces of the ring and the inner peripheral surface.
【００２３】[0023]
【発明の効果】以上説明したように本発明によれば、外
周面がイオン窒化処理層をなすのでシリンダとの摺動に
対して耐摩耗性がよく、また上下面あるいは上下面と内
周面が軟質表面処理層をなすので耐食性に優れるととも
にリング溝の異常摩耗の発生を防止できる。As described above, according to the present invention, since the outer peripheral surface forms an ion nitriding layer, it has good wear resistance against sliding with the cylinder, and the upper and lower surfaces or the upper and lower surfaces and the inner peripheral surface. Since it forms a soft surface-treated layer, it has excellent corrosion resistance and can prevent abnormal wear of the ring groove from occurring.
【００２４】また、イオン窒化処理によって、耐摩耗性
の必要な外周面にのみ窒化処理を容易に行える。そし
て、外周面にのみ窒化を行えるため、合口端部に切欠部
を有しリング幅の薄いリングに厚窒化を施しても、合口
端部の断面積の小さい切欠部の部分の折損強度を保持で
き、リング幅の薄い、折損強度のある、耐摩耗性に優れ
たリングを得られる。Further, the ion nitriding treatment makes it possible to easily perform the nitriding treatment only on the outer peripheral surface which requires abrasion resistance. Since nitriding can be performed only on the outer peripheral surface, even if a ring with a cutout at the abutment end and a narrow ring width is thickly nitrided, the breakage strength of the cutout portion with a small cross-sectional area at the abutment end is maintained. It is possible to obtain a ring having a narrow ring width, breakage strength, and excellent wear resistance.
【図１】セカンドリングの合口部分を示す斜視図であ
る。FIG. 1 is a perspective view showing an abutment portion of a second ring.
【図２】シリンダ内に挿入されたピストンの要部断面図
である。FIG. 2 is a sectional view of a main part of a piston inserted in a cylinder.
【図３】リングの合口部分を示す正面図である。FIG. 3 is a front view showing an abutment portion of a ring.
【図４】リングの合口部分を示す正面図である。FIG. 4 is a front view showing a joint portion of a ring.
【図５】リングの合口部分を示す平面図である。FIG. 5 is a plan view showing an abutment portion of a ring.
１ ピストン ２ トップリング ２Ａ トップリング溝 ３ セカンドリング ３Ａ セカンドリング溝 ４ オイルリング ４Ａ オイルリング溝 ５、６、６Ａ、６Ｂ、６Ｃ イオン窒化処理層 ８、１０ 合口端面 ９ 切欠部 １１ 突出部 １２、１３ 斜面 １６ オイルリング本体 １７ コイルエキスパンダ １８ 硬質クロムめっき １９ シリンダ ２０ シリンダ内壁面 ２１、２２、２２Ａ、２２Ｂ、２２Ｃ、２３ 軟質表面
処理層 ３０、３１、３４、３５、３７、３８ 切欠部 ３２、３３ 突出部 ３６、３９ 回り止めピン1 Piston 2 Top Ring 2A Top Ring Groove 3 Second Ring 3A Second Ring Groove 4 Oil Ring 4A Oil Ring Groove 5, 6, 6A, 6B, 6C Ion-nitriding Treatment Layer 8, 10 Joint End Face 9 Cutout 11 Protrusion 12, 13 Slope 16 Oil ring body 17 Coil expander 18 Hard chrome plating 19 Cylinder 20 Cylinder inner wall 21, 22, 22A, 22B, 22C, 23 Soft surface treatment layer 30, 31, 34, 35, 37, 38 Notch 32, 33 Protrusions 36, 39 Non-rotating pin
Claims (6)
ョンリングにおいて、窒化層を外周面にのみ形成し、上
下面は軟質表面処理層を形成し、前記窒化層がイオン窒
化処理層であることを特徴とするコンプレッションリン
グ。1. A compression ring having a cutout at the end of the joint, wherein a nitride layer is formed only on the outer peripheral surface and soft surface treatment layers are formed on the upper and lower surfaces, and the nitride layer is an ion nitridation layer. A characteristic compression ring.
ョンリングにおいて、窒化層を外周面にのみ形成し、上
下面と内周面は軟質表面処理層を形成し、前記窒化層が
イオン窒化処理層であることを特徴とするコンプレッシ
ョンリング。2. In a compression ring having a notch at the end of the joint, a nitride layer is formed only on the outer peripheral surface, and a soft surface treatment layer is formed on the upper and lower surfaces and the inner peripheral surface, and the nitride layer is an ion nitriding layer. A compression ring characterized by being.
ロックス被膜処理、硫化物被膜処理、すずめっき、軟質
合金めっき、銅めっき、ふっ化樹脂被膜処理、あるいは
これらの複合被膜処理であることを特徴とする請求項１
又は２記載のコンプレッションリング。3. The soft surface treatment is a phosphate coating treatment, a ferrox coating treatment, a sulfide coating treatment, tin plating, a soft alloy plating, copper plating, a fluororesin coating treatment, or a composite coating treatment thereof. Claim 1 characterized by the above-mentioned.
Alternatively, the compression ring described in 2.
と、コイリング材を合口切断する工程と、リング材の合
口端部を加工する工程と、コイリング材あるいは合口切
断されているリング材にイオン窒化処理を施して外周面
にのみ窒化層を形成する工程と、軟質表面処理を施して
上下面に軟質表面処理層を形成する工程と、上記処理を
施し合口部を備えたリング材に仕上加工を施す工程とを
備えたことを特徴とするコンプレッションリングの製造
方法。4. A step of coiling the ring material, a step of cutting the coiling material with an abutment, a step of processing the abutment end portion of the ring material, and an ion nitriding treatment on the coiling material or the ring material which has been abuted. A step of forming a nitride layer only on the outer peripheral surface by applying it, a step of forming a soft surface treatment layer on the upper and lower surfaces by applying a soft surface treatment, and a step of finishing the ring material having the aforesaid part by the above treatment A method for manufacturing a compression ring, comprising:
と、コイリング材を合口切断する工程と、リング材の合
口端部を加工する工程と、コイリング材あるいは合口切
断されているリング材にイオン窒化処理を施して外周面
にのみ窒化層を形成する工程と、軟質表面処理を施して
上下面と内周面に軟質表面処理層を形成する工程と、上
記処理を施し合口部を備えたリング材に仕上加工を施す
工程とを備えたことを特徴とするコンプレッションリン
グの製造方法。5. A step of coiling a ring material, a step of cutting a coiling material, a step of processing an end portion of the ring material, and an ion nitriding treatment on the coiling material or the ring material that has been cut abutment. To form a nitride layer only on the outer peripheral surface, to apply a soft surface treatment to form a soft surface-treated layer on the upper and lower surfaces and the inner peripheral surface, and to apply the above treatment to finish the ring material with an abutment A method of manufacturing a compression ring, the method comprising: a step of performing processing.
ロックス被膜処理、硫化物被膜処理、すずめっき、軟質
合金めっき、銅めっき、ふっ化樹脂被膜処理、あるいは
これらの複合被膜処理であることを特徴とする請求項４
又は５記載のコンプレッションリングの製造方法。6. The soft surface treatment is a phosphate coating treatment, a ferrox coating treatment, a sulfide coating treatment, tin plating, a soft alloy plating, a copper plating, a fluororesin coating treatment, or a composite coating treatment thereof. 5. The method according to claim 4, wherein
Or the method for producing a compression ring according to item 5.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22881891A JP2886372B2 (en) | 1991-08-14 | 1991-08-14 | Manufacturing method of compression ring |
| US07/902,027 US5241748A (en) | 1991-06-27 | 1992-06-22 | Method for manufacturing a compression ring |
| GB9213654A GB2257716B (en) | 1991-06-27 | 1992-06-26 | Compression ring and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22881891A JP2886372B2 (en) | 1991-08-14 | 1991-08-14 | Manufacturing method of compression ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0544840A true JPH0544840A (en) | 1993-02-23 |
| JP2886372B2 JP2886372B2 (en) | 1999-04-26 |
Family
ID=16882344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22881891A Expired - Fee Related JP2886372B2 (en) | 1991-06-27 | 1991-08-14 | Manufacturing method of compression ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2886372B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008151139A (en) * | 2006-12-18 | 2008-07-03 | Waertsilae Schweiz Ag | Piston for oil collecting ring |
-
1991
- 1991-08-14 JP JP22881891A patent/JP2886372B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008151139A (en) * | 2006-12-18 | 2008-07-03 | Waertsilae Schweiz Ag | Piston for oil collecting ring |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2886372B2 (en) | 1999-04-26 |
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