JPH01187349A - Graphite head gasket - Google Patents
Graphite head gasketInfo
- Publication number
- JPH01187349A JPH01187349A JP1021088A JP1021088A JPH01187349A JP H01187349 A JPH01187349 A JP H01187349A JP 1021088 A JP1021088 A JP 1021088A JP 1021088 A JP1021088 A JP 1021088A JP H01187349 A JPH01187349 A JP H01187349A
- Authority
- JP
- Japan
- Prior art keywords
- projection
- graphite
- gasket
- oil hole
- head gasket
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 28
- 239000010439 graphite Substances 0.000 title claims abstract description 28
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 229920006015 heat resistant resin Polymers 0.000 claims abstract description 5
- 238000004080 punching Methods 0.000 claims abstract description 5
- 238000010030 laminating Methods 0.000 claims abstract 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 239000005011 phenolic resin Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 241000282376 Panthera tigris Species 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- HDNHWROHHSBKJG-UHFFFAOYSA-N formaldehyde;furan-2-ylmethanol Chemical compound O=C.OCC1=CC=CO1 HDNHWROHHSBKJG-UHFFFAOYSA-N 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
- F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
- F16J15/122—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement generally parallel to the surfaces
- F16J15/123—Details relating to the edges of the packing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は内燃機関等に使用する黒鉛質ヘッドガスケット
の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to improvements in graphite head gaskets used in internal combustion engines and the like.
（従来の技術）
従来の黒鉛質へラドガスケットは、油穴の周囲にグロメ
ットと呼ばれる金属の薄板を取り付け。(Conventional technology) Conventional graphite herad gaskets have a thin metal plate called a grommet attached around the oil hole.
油のシールを行ってい虎。しかし軽量化エンジンでは、
上記のようなシール法ではエンジの変形で△
油穴周辺の黒鉛が油を吸収し、変形して黒鉛崩れを起こ
すことがある為油穴の周囲に装着したゴムリングで油の
シールを行なっていた。Tiger doing oil seal. However, with a lightweight engine,
With the above sealing method, deformation of the engine may cause the graphite around the oil hole to absorb oil and become deformed, causing the graphite to collapse. Therefore, a rubber ring attached around the oil hole is used to seal the oil. Ta.
（発明が解決しようとする問題点）
しかしながらゴムリングを装着したガスケットではゴム
リングが高価なフッ素系のゴムを使用している為ガスケ
ットが高価なものとなる問題を有していた。(Problems to be Solved by the Invention) However, gaskets equipped with rubber rings have a problem in that the rubber rings are made of expensive fluorine rubber, making the gaskets expensive.
本発明はゴムリングを用いず、油穴周辺の黒鉛の崩れを
防止する黒鉛質へラドガスケットを提供することを目的
とする。An object of the present invention is to provide a graphite rad gasket that prevents graphite from collapsing around an oil hole without using a rubber ring.
（問題点を解決するための手段）
本発明は、補強板の両側に膨張黒鉛シートをラミネート
して打抜いたヘッドガスケットにおいて。(Means for Solving the Problems) The present invention provides a head gasket in which expanded graphite sheets are laminated on both sides of a reinforcing plate and punched out.
該ヘッドガスケットにおける油穴のフランジ部の外側に
突出部を形成し、該突出部に耐熱樹脂を含浸してなる黒
鉛質へラドガスケットに関する。The present invention relates to a graphite herad gasket in which a protruding part is formed on the outside of the flange part of the oil hole in the head gasket, and the protruding part is impregnated with a heat-resistant resin.
本発明において用いられる膨張黒鉛は、高度に結晶構造
の発達した天然黒鉛を濃硫酸と硝酸との混酸または、濃
硫酸と過マンガン酸カリウムとの混酸など強酸化性の処
理液で酸処理して眉間化合物を生成させ、水洗してから
急速加熱し黒鉛結晶のＣ軸方向を膨張処理して得られる
ものである。The expanded graphite used in the present invention is obtained by acid-treating natural graphite with a highly developed crystal structure with a strong oxidizing treatment solution such as a mixed acid of concentrated sulfuric acid and nitric acid or a mixed acid of concentrated sulfuric acid and potassium permanganate. It is obtained by generating a glabellar compound, washing it with water, rapidly heating it, and expanding the graphite crystal in the C-axis direction.
又黒鉛質ヘッドガスケットは、この膨張黒鉛をロール掛
は等により板状に冷間加工した膨張黒鉛シートを９強度
を持たせる為に円形又は、角型の突起を有する金属薄板
の補強板の両側にラミネートし、さらに打抜きプレスで
所定形状に打抜いたものである。The graphite head gasket is made by cold-working expanded graphite into a plate shape by rolling the expanded graphite.9 In order to provide strength, the graphite head gasket is made of an expanded graphite sheet that is cold-processed into a plate shape by rolling the expanded graphite. It is then laminated and then punched into a predetermined shape using a punching press.
本発明においては、油穴にはゴムリングを入れず油穴周
辺のフランジ部から外側に突出部を形成し、該突出部に
耐熱性樹脂を含浸する。含浸する耐熱性樹力旨は、フェ
ノール樹脂、フラン樹脂、エポキシ樹脂、ポリイミド樹
脂等の熱硬化性樹脂が好ましい。In the present invention, a rubber ring is not inserted into the oil hole, but a protrusion is formed outward from the flange around the oil hole, and the protrusion is impregnated with a heat-resistant resin. Regarding the heat-resistant resin to be impregnated, thermosetting resins such as phenol resins, furan resins, epoxy resins, and polyimide resins are preferable.
又、フランジ部から外側に突出する巾は５ｆｆｉＩＩ＋
以上が好ましい。突出部がｓｍｍ未満では耐油強度改善
効果が少なくなる。Also, the width protruding outward from the flange is 5ffiII+
The above is preferable. If the protrusion is less than smm, the effect of improving oil resistance strength will be reduced.
（実施例） 次に本発明の詳細な説明する。(Example) Next, the present invention will be explained in detail.
実施例１
厚さ０．２ ａｎの多数の円形突起を有する金属薄板の
補強板の両側に厚さ０．７５ ｍｍ、密度１ ｇ／ｃｍ
”の膨張黒鉛シート（日立化成工業製、商品名カーボフ
ィット）をラミネートして１．２鵬の板厚とし。Example 1 A thin metal reinforcing plate with a thickness of 0.75 mm and a density of 1 g/cm was placed on both sides of a reinforcing plate having a large number of circular protrusions with a thickness of 0.2 an.
” expanded graphite sheet (manufactured by Hitachi Chemical Co., Ltd., trade name: Carbofit) was laminated to a thickness of 1.2 mm.
さらに打抜きプレスで第１図に示す様に油穴工の周辺８
鵬の位置をフランジ部５とし、該フランジ部から外側に
幅６１ｍ１１の突出部２が形成されるようにガスケット
を打抜き、突出部２以外をマスキングして突出部２にフ
ェノール樹脂（日立化成工業製、商品名ＶＰ２３１）２
０重量部をアセトン８０重量部に溶解した溶液を含浸率
が５重量優になる様に含浸し１５０℃で３０分硬化させ
念。Furthermore, with a punching press, as shown in Figure 1, the area around the oil hole 8
The gasket is punched out so that a protruding part 2 with a width of 61 m11 is formed outward from the flange part, the part other than the protruding part 2 is masked, and the protruding part 2 is filled with phenol resin (manufactured by Hitachi Chemical Co., Ltd.). , Product name VP231)2
It was impregnated with a solution of 0 parts by weight dissolved in 80 parts by weight of acetone so that the impregnation rate was more than 5 parts by weight, and cured at 150°C for 30 minutes.
０．２鵬の銅のグロメット３を装着したヘッドガスケッ
トを作製した。A head gasket equipped with a 0.2 mm copper grommet 3 was manufactured.
１、２ ｍｍのフッ素系のゴムリング４を取り付けたベ
ツドガスケットを作製した。A bed gasket to which a fluorine-based rubber ring 4 of 1 to 2 mm was attached was manufactured.
実施例および比較例のへラドガスケットを５万すの一般
走行のそニターテストで比較試験したところ第１表に示
す結果が得られた。The Herad gaskets of the Examples and Comparative Examples were subjected to a comparative test using a 50,000-speed general running test, and the results shown in Table 1 were obtained.
第１表から明らかな様に油穴の７ランジ部の外側に設け
た突出部に樹脂を含浸することで、従来のグロメットを
取り付ける仕様で欠点とされた黒鉛崩れ及び油洩れを防
止できる。さらにゴムリングを装着した比較例２に比べ
ても価格的に約１０−の原価低減が図れる。As is clear from Table 1, by impregnating the protrusion provided on the outside of the seven flange portions of the oil hole with resin, it is possible to prevent graphite collapse and oil leakage, which are drawbacks of conventional grommet attachment specifications. Furthermore, compared to Comparative Example 2 in which a rubber ring is attached, the cost can be reduced by about 10-.
（発明の効果）
本発明によれば、油穴周辺における黒鉛崩れや油洩れを
、高価なゴムリング等を用いることなく防止できる。(Effects of the Invention) According to the present invention, graphite collapse and oil leakage around the oil hole can be prevented without using expensive rubber rings or the like.
第１図は１本発明の実施例になる黒鉛質ヘッドガスケッ
トの平面図、第２図及び第３図は従来の黒鉛質ヘッドガ
スケットの平面図である。
符号の説明
１・・・油穴 ２・・・突出部３・・・グロ
メット ４・・・ゴムリング５・・・７ランジ部FIG. 1 is a plan view of a graphite head gasket according to an embodiment of the present invention, and FIGS. 2 and 3 are plan views of conventional graphite head gaskets. Explanation of symbols 1...Oil hole 2...Protrusion 3...Grommet 4...Rubber ring 5...7 Lunge part
Claims (1)
抜いたヘッドガスケットにおいて、該ヘッドガスケット
における油穴のフランジ部の外側に突出部を形成し、該
突出部に耐熱性樹脂を含浸してなる黒鉛質ヘッドガスケ
ット。1. In a head gasket made by laminating expanded graphite sheets on both sides of a reinforcing plate and punching it out, a protrusion is formed on the outside of the flange of the oil hole in the head gasket, and the protrusion is impregnated with a heat-resistant resin. Graphite head gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1021088A JPH01187349A (en) | 1988-01-20 | 1988-01-20 | Graphite head gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1021088A JPH01187349A (en) | 1988-01-20 | 1988-01-20 | Graphite head gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01187349A true JPH01187349A (en) | 1989-07-26 |
Family
ID=11743910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1021088A Pending JPH01187349A (en) | 1988-01-20 | 1988-01-20 | Graphite head gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01187349A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU662072B2 (en) * | 1992-08-05 | 1995-08-17 | T & N Technology Limited | Gasket manufacture |
| US6974647B2 (en) * | 1997-05-01 | 2005-12-13 | Ballard Power Systems Inc. | Fuel cell fluid distribution layer having integral sealing capability |
-
1988
- 1988-01-20 JP JP1021088A patent/JPH01187349A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU662072B2 (en) * | 1992-08-05 | 1995-08-17 | T & N Technology Limited | Gasket manufacture |
| US6974647B2 (en) * | 1997-05-01 | 2005-12-13 | Ballard Power Systems Inc. | Fuel cell fluid distribution layer having integral sealing capability |
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