JPH11182333A - Wear resistant ring of piston for internal combustion engine - Google Patents
Wear resistant ring of piston for internal combustion engineInfo
- Publication number
- JPH11182333A JPH11182333A JP35570597A JP35570597A JPH11182333A JP H11182333 A JPH11182333 A JP H11182333A JP 35570597 A JP35570597 A JP 35570597A JP 35570597 A JP35570597 A JP 35570597A JP H11182333 A JPH11182333 A JP H11182333A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- piston
- wear
- wear resistant
- resistant ring
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/042—Expansivity
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内燃機関用ピスト
ンのリング溝に鋳包められてリング溝の耐摩耗性を向上
させる耐摩環に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wear ring which is cast in a ring groove of a piston for an internal combustion engine to improve the wear resistance of the ring groove.
【０００２】[0002]
【従来の技術】内燃機関用ピストン、特にディーゼルエ
ンジン用等の高負荷で使用されるピストンにおいては、
ピストンのリング溝の耐摩耗性向上のためにピストンに
耐摩環を鋳包み、この耐摩環でリング溝を形成してい
る。この耐摩環としてはニレジスト製のものが使用され
ている（特開平５−２４０３４７号公報）。2. Description of the Related Art In a piston for an internal combustion engine, particularly a piston used at a high load such as for a diesel engine,
In order to improve the wear resistance of the ring groove of the piston, a wear ring is cast around the piston, and the ring groove is formed by the wear ring. As this wear-resistant ring, one made of Niresist is used (JP-A-5-240347).
【０００３】ところで、一般に金属材料は耐摩耗性を高
くすればそれにつれて、硬度は高くなり切削性などの加
工性が悪くなるという問題がでてくる。ニレジスト製の
耐摩環も例外でなく、切削加工性が悪く生産工程のネッ
クになっており、加工に時間がかかりピストンの生産の
所要時間が多くかかるという問題点がある。また、鋳造
で製作する場合、耐摩環が相対的に大きく、その熱容量
もそれに比して大きくなるため、ピストンを形成するア
ルミニウム母材との密着性に大きく影響する。密着性の
向上のために、耐摩環を鋳包む部分を大きめにして熱容
量を確保したり、耐摩環を鋳包む際にアルミニウム注湯
後もしばらくバーナなどの他の熱源で温めて溶湯温度の
低下防止を図り、密着性の確保につとめている。In general, the higher the wear resistance of a metal material, the higher the hardness and the worse the workability such as machinability. The wear-resistant ring made of Niresist is no exception, and the cutting workability is poor, which is a bottleneck in the production process. In addition, when manufactured by casting, the wear ring is relatively large and its heat capacity is also large in comparison with it, which greatly affects the adhesion to the aluminum base material forming the piston. In order to improve the adhesiveness, the area where the ring is cast is made larger to secure the heat capacity, or when casting the ring, the temperature of the molten metal is lowered by warming it with another heat source such as a burner for a while after pouring aluminum. We work on prevention and secure adhesion.
【０００４】上記したごとく、ニレジスト製の耐摩環
は、ピストンのリング溝にに鋳包むために種々の工夫を
こらして上記の不具合に対応しているのが事実であり、
製品製造上も問題点が多い。今後、エンジンの使用状況
が過酷になることを考えると、ピストン温度の上昇を考
慮し、且つ低コストの耐摩環が必要である。[0004] As described above, it is a fact that the wear resisting ring made of Niresist has taken various measures to cope with the above problem by casting it into the ring groove of the piston.
There are many problems in product manufacturing. Considering that the use condition of the engine will become severe in the future, it is necessary to consider a rise in piston temperature and to provide a low-cost wear ring.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上記の事情
に鑑みてなされたもので、密着性の向上した低コストの
耐摩環を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a low-cost wear ring with improved adhesion.
【０００６】[0006]
【課題を解決するための手段】本発明の一方の内燃機関
用ピストンの耐摩環は、炭素を０．１〜１．０重量％を
含み、密度が６．０ｇ／ｃｍ3以上のオーステナイト系
鋼の焼結体で形成されていることを特徴とする。オース
テナイト系鋼製の焼結体で形成されるため、加工が容易
でかつ耐摩性に富む。さらに、熱伝導性が低いためピス
トンを形成するアルミニウム母材と機械的にも結合し、
密着性が高くなる。An abrasion-resistant ring of a piston for an internal combustion engine according to the present invention contains an austenitic steel containing 0.1 to 1.0% by weight of carbon and having a density of 6.0 g / cm 3 or more. Characterized by being formed of a sintered body of Since it is formed of a sintered body made of austenitic steel, it is easy to work and has high wear resistance. Furthermore, because of its low thermal conductivity, it is also mechanically bonded to the aluminum base material that forms the piston,
Adhesion increases.
【０００７】本発明のもう一つの内燃機関用ピストンの
耐摩環は、ピストンのリング溝の耐摩耗性向上のために
該ピストンに鋳包んで形成される内燃機関用ピストンの
耐摩環であって、前記耐摩環は、前記リング溝に沿って
２分割されて形成された焼結合金粉末の２分割圧密成形
体を焼結により一体化したことを特徴とする。耐摩環に
予めリング溝が形成されている。このため、耐摩環を鋳
包んだ後、ピストンのリング溝の仕上げ加工を必要とす
るのみで、加工が容易となる。また、容易に回り止め等
の突部を形成できる。[0007] Another wear-resistant ring of the piston for an internal combustion engine of the present invention is a wear-resistant ring of a piston for an internal combustion engine formed by being cast into the piston in order to improve the wear resistance of a ring groove of the piston, The wear-resistant ring is characterized in that a two-part compacted compact of a sintered alloy powder formed in two parts along the ring groove is integrated by sintering. A ring groove is formed in the wear ring in advance. For this reason, after casting the wear-resistant ring, it is only necessary to finish the ring groove of the piston, which facilitates the processing. Also, a protrusion such as a detent can be easily formed.
【０００８】[0008]
【発明の実施の形態】本発明の一方の内燃機関用ピスト
ンの耐摩環は、オーステナイト系鋼の焼結体で形成され
ている。このオーステナイト鋼系の焼結体はその炭素含
量が０．１〜１．０重量％の範囲であり、その密度は
６．０ｇ／ｃｍ3以上である。このオーステナイト鋼系
の焼結体はその熱膨張係数（１７．８×１０-6（１／
Ｋ））がピストン素材のアルミニウム合金の熱膨張係数
（２０．０×１０-6（１／Ｋ））と近いため、高温下で
使用しても不具合が生じない。またこの耐摩環はピスト
ンリングに対して摩耗せず、摩耗もさせないのでピスト
ンの長寿命化が可能となる。BEST MODE FOR CARRYING OUT THE INVENTION One of the piston rings for an internal combustion engine according to the present invention is formed of a sintered body of austenitic steel. This austenitic steel-based sintered body has a carbon content in the range of 0.1 to 1.0% by weight and a density of 6.0 g / cm 3 or more. This austenitic steel sintered body has a coefficient of thermal expansion (17.8 × 10 −6 (1/1)
K)) is close to the thermal expansion coefficient (20.0 × 10 −6 (1 / K)) of the aluminum alloy used as the piston material, so that no problem occurs even when used at high temperatures. Further, the wear ring does not wear on the piston ring and does not wear it, so that the life of the piston can be extended.
【０００９】オーステナイト鋼系の焼結体の炭素量が
０．１重量％未満の場合はα−フェライト化して好まし
くない。１．０重量％を超えると炭素過多（グラファイ
ト）となり好ましくない。また耐摩環の密度が６．０ｇ
／ｃｍ3未満の場合は部材の強度が低下して好ましくな
い。このオーステナイト系鋼は、例えば、炭素の他にク
ロム、ニッケルを含むオーステナイト系ステンレス鋼よ
りなる焼結体用の粉末が用いられる。[0009] When the carbon content of the austenitic steel-based sintered body is less than 0.1% by weight, it is not preferable because α-ferrite is formed. If it exceeds 1.0% by weight, carbon becomes excessive (graphite), which is not preferable. In addition, the density of the wear ring is 6.0 g
If it is less than / cm 3, the strength of the member is undesirably reduced. As this austenitic steel, for example, a powder for a sintered body made of austenitic stainless steel containing chromium and nickel in addition to carbon is used.
【００１０】このオーステナイト系鋼の焼結体で形成さ
れた耐摩環は、ニレジスト製の耐摩環と同等の耐摩耗性
を有するとともに、ニレジスト製耐摩環に比べて加工性
がよく低コストで製造できピストンへの密着性にも優
れ、ピストンへの鋳包みも容易となる。本発明のもう一
つの耐摩環は、ピストンのリング溝に沿って２分割され
て形成された焼結合金粉末の２分割圧密成形体を、焼結
により一体化して形成されている。耐摩環は、鉄等の焼
結合金粉末を用いて耐摩環の圧密成形体を形成し、次い
で圧密成形体を焼結することで形成される。The wear ring made of the sintered body of the austenitic steel has the same wear resistance as a Niresist ring, and has good workability and can be manufactured at low cost as compared with a Niresist ring. It has excellent adhesion to the piston, and cast-in to the piston becomes easy. Another wear ring of the present invention is formed by sintering a two-part compacted compact of a sintered alloy powder formed by being divided into two parts along a ring groove of a piston. The wear-resistant ring is formed by using a sintered alloy powder such as iron to form a compacted body of the wear-resistant ring, and then sintering the compacted body.
【００１１】圧密成形体は、後工程での加工工程を簡略
化するために、２分割圧密成形体とすることで耐摩環の
製品として必要形状に近い状態で作製できるとともに、
焼結工程で２分割圧密成形体を容易に締結一体化するこ
とができる。その結果、加工工程での処理は最小限にで
き、かつ熱容量の低減も可能であるため、鋳造時の密着
性向上のための諸施策を省くことができる。また、アル
ミニウム母材との間の回り止め用の突部を容易に形成で
きる。In order to simplify the processing steps in the subsequent steps, the compacted molded body can be manufactured in a state close to the required shape as a ring-resistant product by forming it into a two-part compacted molded body.
In the sintering step, the two-part compacted compact can be easily fastened and integrated. As a result, the processing in the processing step can be minimized and the heat capacity can be reduced, so that various measures for improving the adhesion during casting can be omitted. In addition, it is possible to easily form a protrusion for preventing rotation between the base material and the aluminum base material.
【００１２】通常、２分割して２種類の圧密成形体を作
り、焼結工程で一体的に接合して耐摩環を作製すること
はコストアップとなる。しかしこの場合、後工程である
加工工程の簡素化が可能となり、トータルとしてのピス
トン製造の低コスト化を図ることができる。２分割の圧
密成形体は、例えば、図２にその形状を示すように、リ
ング溝に沿って２分したＬ字形部と一字形部とに分けて
形成する。そして、焼結時に両者の結合面を合わせて加
熱することにより、一体的に焼結することにより、所定
形状の寸法精度の高い耐摩環を製造することができる。Usually, it is costly to produce two types of compacts by dividing them into two parts and to join them together in a sintering process to produce a ring. However, in this case, it is possible to simplify a post-processing step, and it is possible to reduce the total cost of manufacturing the piston. For example, as shown in FIG. 2, the two-part compacted molded body is formed into an L-shaped part and a one-shaped part divided into two along the ring groove. Then, by combining and heating the joint surfaces of the two at the time of sintering, and by integrally sintering, it is possible to manufacture a wear ring having a predetermined shape and high dimensional accuracy.
【００１３】焼結により一体化した耐摩環は、ピストン
素材のアルミニウム合金で鋳包まれて図１に示すピスト
ンのトップリング溝１２を形成する。The wear ring integrated by sintering is cast-in with a piston material aluminum alloy to form a piston top ring groove 12 shown in FIG.
【００１４】[0014]
【実施例】以下、実施例により具体的に説明する。 （実施例１）本実施例１の耐摩環を鋳包んだピストンの
断面図を図１に示す。このピストン１０はその頂面側の
側周部分１１にトップリング溝１２、セカンドリング溝
１３、オイルリング溝１４、が設けられている。前記ト
ップリング溝１２は、耐摩耗性向上のために鋳包まれた
本実施例の耐摩環２０により形成されている。The present invention will be specifically described below with reference to examples. (Embodiment 1) FIG. 1 is a cross-sectional view of a piston in which a wear-resistant ring of Embodiment 1 is cast. The piston 10 is provided with a top ring groove 12, a second ring groove 13, and an oil ring groove 14 in a side peripheral portion 11 on the top surface side. The top ring groove 12 is formed by the wear ring 20 of the present embodiment, which is cast-in for improving wear resistance.
【００１５】この耐摩環２０は、オーステナイト系ステ
ンレス鋼粉末（組成、Ｃｒ：１８．６６重量％、Ｎｉ：
１１．０５重量％、Ｃ：０．４２重量％、残部鉄、平均
粒径（１００ｍｅｓｈアンダー）を用いて図２の２点破
線に示すＬ字形部２２と一字形部２１とに分けた形状の
２分割圧密成形体をプレス成形で作製した。なお、図２
の製品形状が実線で示され、２点破線は、後に機械加工
により仕上げ加工された状態を示す。The wear ring 20 is made of austenitic stainless steel powder (composition, Cr: 18.66% by weight, Ni:
11.05% by weight, C: 0.42% by weight, balance iron, average particle size (under 100 mesh), the L-shaped part 22 and the single-shaped part 21 shown by the two-dot broken line in FIG. A two-part compacted compact was produced by press molding. Note that FIG.
Is shown by a solid line, and a two-dot broken line shows a state after finishing by machining.
【００１６】この耐摩環２０の平面図を図３に示すよう
に、この耐摩環２０にはその内周面側の４カ所に等角度
間隔で中心方向に突出した突部２３が形成されている。
この突部２３はピストン１０に鋳包まれ、アルミニウム
母材中に突入した状態となり、耐摩環２０がピストン１
０に対して回転するのを阻止する。Ｌ字形部２２の大き
く突出している部分は、鋳造時に型へセットされて固定
される部分である。これらＬ字形部２２と一字形部２１
とは接合面を合わせて加熱され一体的に焼結固定され、
耐摩環２０が製造された。As shown in FIG. 3, a plan view of the wear-resistant ring 20 is formed at four positions on the inner peripheral surface side of the wear-resistant ring 20 with projections 23 protruding toward the center at equal angular intervals. .
The protruding portion 23 is cast into the piston 10 and protrudes into the aluminum base material.
Prevents rotation about zero. The large protruding portion of the L-shaped portion 22 is a portion which is set and fixed to a mold at the time of casting. These L-shaped part 22 and one-shaped part 21
And the joint surfaces are heated together and fixed integrally by sintering,
A wear ring 20 was produced.
【００１７】この耐摩環２０の硬さは、ＨＲＢ ６７．
３、密度：６．７４ｇ／ｃｍ3であった。鋳包み鋳造を
行った後、従来と同じ方法で研削加工を行い、ピストン
１０の側周面を仕上げ加工するとともにその頂面部１１
にトップリング溝１２、セカンドリング溝１３、オイル
リング溝１４を形成した。これらトップリング溝１２、
セカンドリング溝１３およびオイルリング溝１４の仕上
げ加工に特に困難は無かった。The hardness of the ring 20 is HRB 67.
3. Density: 6.74 g / cm 3 . After the cast-in casting, grinding is performed in the same manner as in the prior art to finish-process the side peripheral surface of the piston 10 and the top surface 11 thereof.
, A top ring groove 12, a second ring groove 13, and an oil ring groove 14 were formed. These top ring grooves 12,
There was no particular difficulty in finishing the second ring groove 13 and the oil ring groove 14.
【００１８】また、耐摩環２０はピストン１０のアルミ
ニウム母材に強固に保持されていた。本実施例の耐摩環
２０は焼結体で形成されている。このため回り止め用の
突部２３も型成形で容易に形成することができた。ま
た、焼結体であるため、その表面に凹凸が多く、これに
よりピストン１０のアルミニウム母材に投錨効果により
機械的に結合され、一体性が高い。さらにこの耐摩環２
０はオーステナイト系ステンレス鋼製であるため、熱伝
導率が低く、溶湯が耐摩環２０により冷却されにくく鋳
包み鋳造が容易という利点もある。 （実施例２）実施例１の耐摩環の材質を他のオーステナ
イト系ステンレス鋼粉末（組成、Ｃｒ：１８．４７、Ｎ
ｉ：１０．９８、Ｃ：０．８４、残部鉄、平均粒径（１
００ｍｅｓｈアンダー）に代え、実施例１と同じ方法で
この実施例２の耐摩環を得た。The wear ring 20 was firmly held by the aluminum base material of the piston 10. The wear ring 20 of this embodiment is formed of a sintered body. For this reason, the rotation preventing projection 23 could also be easily formed by molding. In addition, since it is a sintered body, its surface has many irregularities, whereby it is mechanically coupled to the aluminum base material of the piston 10 by an anchoring effect, and has high integrity. Furthermore, this wear ring 2
Since No. 0 is made of austenitic stainless steel, it also has the advantage that the heat conductivity is low, the molten metal is hardly cooled by the wear-resistant ring 20, and the cast-in casting is easy. (Example 2) The material of the wear ring of Example 1 was changed to another austenitic stainless steel powder (composition, Cr: 18.47, N
i: 10.98, C: 0.84, balance iron, average particle size (1
00 mesh under), and the wear ring of Example 2 was obtained in the same manner as in Example 1.
【００１９】この耐摩環２０の硬さは、ＨＲＢ ７５．
５、密度：６．０５ｇ／ｃｍ3であった。この耐摩環を
使用し実施例１と同じ方法で鋳包み鋳造を行いピストン
を鋳造した。その後、従来と同じ方法で切削加工を行
い、ピストンの側周面を仕上げ加工するとともにその頂
面部にトップリング溝、セカンドリング溝、オイルリン
グ溝を形成した。これらトップリング溝、セカンドリン
グ溝およびオイルリング溝の仕上げ加工に特に困難は無
かった。The hardness of the ring 20 is HRB 75.
5. Density: 6.05 g / cm 3 . Using this wear-resistant ring, cast-in casting was performed in the same manner as in Example 1 to cast a piston. Thereafter, cutting was performed in the same manner as in the prior art, finishing the side peripheral surface of the piston, and forming a top ring groove, a second ring groove, and an oil ring groove on the top surface. There was no particular difficulty in finishing these top ring groove, second ring groove and oil ring groove.
【００２０】また、この実施例２の耐摩環もピストンの
アルミニウム母材に強固に保持されていた。この耐摩環
も焼結体で形成されているため耐摩耗性が高い。また、
焼結体であるため、その表面に凹凸が多く、これにより
ピストンのアルミニウム母材に投錨効果により機械的に
結合され、一体性が高い。さらにこの耐摩環はオーステ
ナイト系ステンレス鋼製であるため、熱伝導率が低く、
溶湯が耐摩環により冷却されにくく鋳包み鋳造が容易と
いう利点もある。The wear ring of Example 2 was firmly held by the aluminum base material of the piston. Since this wear ring is also formed of a sintered body, it has high wear resistance. Also,
Since it is a sintered body, it has many irregularities on its surface, whereby it is mechanically coupled to the aluminum base material of the piston by an anchoring effect and has high integrity. Furthermore, because this wear ring is made of austenitic stainless steel, its thermal conductivity is low,
There is also an advantage that the molten metal is hardly cooled by the wear-resistant ring, and casting-in-casting is easy.
【００２１】[0021]
【発明の効果】本発明の一方の内燃機関用ピストンの耐
摩環は、炭素を０．１〜１．０重量％を含み、密度が
６．０ｇ／ｃｍ3以上のオーステナイト系鋼の焼結体で
形成されている。耐摩環が焼結体で形成されているため
成形性が良い。耐摩環の表面は凹凸に富み、ピストンを
形成するアルミニウム母材と機械的にも結合し、密着性
が高くなる。また、オーステナイト系鋼であるためピス
トン素材のアルミニウムと熱膨張率が近い。このため、
高温下で使用しても不具合が生じない。さらにピストン
リングに対して摩耗しにくく、摩耗もさせにくいので、
長寿命化が可能である。According to one aspect of the present invention, there is provided a sintered ring of an austenitic steel containing 0.1 to 1.0% by weight of carbon and having a density of 6.0 g / cm 3 or more. It is formed with. Since the wear ring is formed of a sintered body, the formability is good. The surface of the anti-friction ring is rich in irregularities, and is mechanically bonded to the aluminum base material forming the piston, thereby increasing the adhesion. In addition, since it is austenitic steel, its coefficient of thermal expansion is close to that of aluminum of the piston material. For this reason,
No problems occur even when used at high temperatures. Furthermore, as it is hard to wear on the piston ring and it is hard to wear it,
Long life is possible.
【００２２】本発明のもう一つの内燃機関用ピストンの
耐摩環はリング溝に沿って２分割されて形成された焼結
合金粉末の２分割圧密成形体を焼結により一体化されて
いる。リング溝に沿って２分割されており圧密成形体の
製造が容易という利点がある。また、耐摩環に予めリン
グ溝が形成されている。このため、耐摩環を鋳包んだ
後、ピストンのリング溝の仕上げ加工を必要とするのみ
で、加工が容易となる。Another wear-resistant ring of a piston for an internal combustion engine according to the present invention is obtained by sintering a two-part compacted compact of a sintered alloy powder formed by dividing it along a ring groove. It is divided into two parts along the ring groove, and there is an advantage that it is easy to manufacture a compacted body. Further, a ring groove is formed in the wear ring in advance. For this reason, after casting the wear-resistant ring, it is only necessary to finish the ring groove of the piston, which facilitates the processing.
【図１】本発明の耐摩環を鋳包んだピストンの断面図で
ある。FIG. 1 is a sectional view of a piston in which a wear-resistant ring of the present invention is cast.
【図２】実施例１の耐摩環の部分断面図である。FIG. 2 is a partial cross-sectional view of the wear ring according to the first embodiment.
【図３】実施例１の耐摩環の平面図である。FIG. 3 is a plan view of the wear-resistant ring of the first embodiment.
１０：ピストン、１１：側周部、１２：トップリング
溝、１３：セカンドリング溝、１４：オイルリング溝、
２０：耐摩環、２３：突部10: piston, 11: side circumference, 12: top ring groove, 13: second ring groove, 14: oil ring groove,
20: Wear-resistant ring, 23: Projection
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２２Ｄ 19/08 Ｂ２２Ｄ 19/08 Ｄ Ｆ１６Ｊ 9/00 Ｆ１６Ｊ 9/00 Ａ 9/26 9/26 Ａ // Ｂ２２Ｆ 5/02 Ｂ２２Ｆ 5/02 7/06 7/06 Ｄ (72)発明者 川端 康浩 愛知県刈谷市朝日町２丁目１番地 アイシ ン精機株式会社内 (72)発明者 中村 義勝 栃木県下都賀郡野木町野木1111番地 日本 ピストンリング株式会社栃木工場内 (72)発明者 井口 邦浩 栃木県下都賀郡野木町野木1111番地 日本 ピストンリング株式会社栃木工場内──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI B22D 19/08 B22D 19/08 D F16J 9/00 F16J 9/00 A 9/26 9/26 A // B22F 5/02 B22F 5/02 7/06 7/06 D (72) Inventor Yasuhiro Kawabata 2-1-1 Asahi-cho, Kariya City, Aichi Prefecture Inside Aisin Seiki Co., Ltd. (72) Yoshikatsu Nakamura 1111 Nogi, Nogi-cho, Shimotsuga-gun, Tochigi Japan Piston Ring Co., Ltd. Tochigi Factory (72) Inventor Kunihiro Iguchi 1111 Nogi, Nogi-cho, Shimotsuga-gun, Tochigi Japan Piston Ring Co., Ltd. Tochigi Factory
Claims (2)
が６．０ｇ／ｃｍ3以上のオーステナイト系鋼の焼結体
で形成されていることを特徴とする内燃機関用ピストン
の耐摩環。1. A piston for an internal combustion engine, comprising a sintered body of austenitic steel containing 0.1 to 1.0% by weight of carbon and having a density of 6.0 g / cm 3 or more. Wear ring.
に該ピストンに鋳包んで形成される内燃機関用ピストン
の耐摩環であって、 前記耐摩環は、前記リング溝に沿って２分割されて形成
された焼結合金粉末の２分割圧密成形体を焼結により一
体化したことを特徴とする内燃機関用ピストンの耐摩
環。2. A wear-resistant ring for an internal combustion engine piston formed by casting into a piston to improve wear resistance of a ring groove of the piston, wherein the wear-resistant ring is divided into two along the ring groove. A wear ring for a piston for an internal combustion engine, wherein a two-part compacted compact of a sintered alloy powder formed as a result is integrated by sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35570597A JP3569429B2 (en) | 1997-12-24 | 1997-12-24 | Wear-resistant ring of piston for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35570597A JP3569429B2 (en) | 1997-12-24 | 1997-12-24 | Wear-resistant ring of piston for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11182333A true JPH11182333A (en) | 1999-07-06 |
| JP3569429B2 JP3569429B2 (en) | 2004-09-22 |
Family
ID=18445352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35570597A Expired - Fee Related JP3569429B2 (en) | 1997-12-24 | 1997-12-24 | Wear-resistant ring of piston for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3569429B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004101836A2 (en) * | 2003-05-14 | 2004-11-25 | Gkn Sinter Metals Holding Gmbh | Oil pump |
| JP2012184764A (en) * | 2011-03-03 | 2012-09-27 | Ti Group Automotive Systems Llc | Positive displacement fluid pump |
-
1997
- 1997-12-24 JP JP35570597A patent/JP3569429B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004101836A2 (en) * | 2003-05-14 | 2004-11-25 | Gkn Sinter Metals Holding Gmbh | Oil pump |
| WO2004101836A3 (en) * | 2003-05-14 | 2005-01-27 | Gkn Sinter Metals Gmbh | Oil pump |
| CN100400694C (en) * | 2003-05-14 | 2008-07-09 | Gkn金属烧结控股有限责任公司 | Oil pump |
| JP2012184764A (en) * | 2011-03-03 | 2012-09-27 | Ti Group Automotive Systems Llc | Positive displacement fluid pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3569429B2 (en) | 2004-09-22 |
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