JPH0563670B2 - - Google Patents
Info
- Publication number
- JPH0563670B2 JPH0563670B2 JP63260499A JP26049988A JPH0563670B2 JP H0563670 B2 JPH0563670 B2 JP H0563670B2 JP 63260499 A JP63260499 A JP 63260499A JP 26049988 A JP26049988 A JP 26049988A JP H0563670 B2 JPH0563670 B2 JP H0563670B2
- Authority
- JP
- Japan
- Prior art keywords
- expanded graphite
- metal
- metal plate
- metal gasket
- coating
- 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 - Fee Related
Links
- 239000002184 metal Substances 0.000 claims description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 229910002804 graphite Inorganic materials 0.000 claims description 18
- 239000010439 graphite Substances 0.000 claims description 18
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000005238 degreasing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 7
- 229920000459 Nitrile rubber Polymers 0.000 description 5
- 229920002050 silicone resin Polymers 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Description
（産業上の利用分野）
本発明は、内燃機関のシリンダヘツド部等にお
いて使用する金属製のメタルガスケツトの製造方
法に関するものである。
（従来の技術）
近時、エンジンの高性能化に伴つて金属板を基
材とするメタルガスケツトが開発されているが、
これらメタルガスケツトのシール面にはシール材
として、高ニトリルゴム、フツ素ゴム、シリコー
ン樹脂がコーテイングされていた。
（発明が解決しようとする課題）
しかしながら昨今のエンジンの高性能化に伴
い、ガスケツトに掛かる熱負荷が益々増加の傾向
にあるため、現在ミクロシール剤として使用して
いる高ニトリルゴム、フツ素ゴムおよびシリコー
ン樹脂では、その使用温度限界に達していると思
われる。
そこで、従来のメタルガスケツトより耐熱性、
柔軟性ならびに加工性が優れたメタルガスケツト
が要望されている。
（課題を解決するための手段）
上述の要望を満足させるため本発明において
は、鋼板の表面を洗浄脱脂した後、その面に熱硬
化性接着剤を塗布し、その上に膨張黒鉛粉末をの
せて圧縮ロールで10〜150μmの厚さでコーテイン
グし、その後加熱炉中で熱硬化性接着剤の硬化温
度で数分間加熱処理することにより膨張黒鉛の薄
層を被着させる。
（作用）
上述のように本発明においては、メタルガスケ
ツトの基板となる金属板の面に熱硬化性接着剤を
介して膨張黒鉛の薄層を被着した。そしてこの膨
張黒鉛は従来使用していた高ニトリルゴム、フツ
素ゴム、およびシリコーン樹脂よりも耐熱性にす
ぐれている上に、シール材としての柔軟性と加工
性にもすぐれているから、本発明によれば、従来
のメタルガスケツトより、耐熱性および柔軟性な
らびに加工性にすぐれたメタルガスケツトを得る
ことができる。
（実施例）
以下、図面について本発明の実施例を説明す
る。第１図および第２図の本発明の製造方法によ
るメタルガスケツトの部分拡大断面図で、図中１
はメタルガスケツトの基材である金属板で、本実
施例では鋼板である。
本実施例においては、鋼板１の表面をトリクロ
ロエチレンで十分に洗浄脱脂を行つた後、その面
に熱硬化性接着剤（フエノール変性ニトリルゴ
ム）２を塗布し、その上に膨張黒鉛粉末をのせて
圧縮ロールで10〜150μmの厚さでコーテイング
し、その後加熱炉中で硬化温度の150℃で５分間
加熱処理することにより膨張黒鉛の薄層３を被着
させてメタルガスケツトの素材を形成した。
なお第１図は金属板１の片面にのみ熱硬化性接
着剤２を介して膨張黒鉛の薄層３を被着したもの
であり、第２図は金属板１の両面に熱硬化性接着
剤２を介して膨張黒鉛の薄層３をそれぞれ被着し
たものである。
第３図〜第５図は本発明によるメタルガスケツ
トの素材を量産する装置の一例を示すもので、図
中１はメタルガスケツトの基材である金属板（鋼
板）で、１Ａはその金属板１を巻回したものであ
り、矢印Ｂの方向に金属板１を送り出すようにな
つている。４はその金属板１の脱脂装置、５は接
着剤塗布装置で、６は接着剤乾燥装置であり、こ
の乾燥装置６を通過した金属板１は矢印Ｃの如く
次工程の膨張黒鉛のコーテイング装置に送られ
る。
第４図は金属板１の片面のみにコーテイングす
る装置であり、第５図は金属板１の両面にコーテ
イングする装置である。図中７は膨張黒鉛粉末、
８はそのホツパー、９は密度調整用スクレイパ
ー、１０は厚さ調整および圧縮用ロールである。
また熱硬化性接着剤としては、前記したフエノ
ール変性ニトリルゴムの他に、フエノール樹脂、
フエノル−ブタジエン共重合、フエノール−ポリ
アミド、ビスフエノール型エポキシ、エポキシ−
フエノール、エポキシポリアミド、ブタジエン−
アクリロニトリル等がある。
上述のように膨張黒鉛のコーテイング層は、膨
張黒鉛粉末を金属板上に積層して圧縮ロールで圧
延することにより、所望の密度と厚さのコーテイ
ング層を得るものであるが、その密度についての
試験結果を示せば、次の第１表の通りである。
(Industrial Application Field) The present invention relates to a method of manufacturing a metal gasket used in the cylinder head of an internal combustion engine. (Prior art) Recently, metal gaskets based on metal plates have been developed as engines become more sophisticated.
The sealing surfaces of these metal gaskets were coated with high nitrile rubber, fluorine rubber, or silicone resin as a sealing material. (Problem to be solved by the invention) However, as the performance of modern engines increases, the heat load placed on gaskets tends to increase. It appears that silicone resins and silicone resins have reached their operating temperature limits. Therefore, it has better heat resistance than conventional metal gaskets.
There is a demand for metal gaskets with excellent flexibility and workability. (Means for Solving the Problems) In order to satisfy the above-mentioned demands, in the present invention, after cleaning and degreasing the surface of a steel plate, a thermosetting adhesive is applied to the surface, and expanded graphite powder is placed on the surface. A thin layer of expanded graphite is applied by coating with a compression roll to a thickness of 10-150 μm, followed by heat treatment for several minutes at the curing temperature of the thermoset adhesive in an oven. (Function) As described above, in the present invention, a thin layer of expanded graphite is adhered to the surface of a metal plate serving as a substrate of a metal gasket via a thermosetting adhesive. Expanded graphite has better heat resistance than conventionally used high nitrile rubber, fluorocarbon rubber, and silicone resin, and also has excellent flexibility and processability as a sealing material. According to the method, it is possible to obtain a metal gasket that has better heat resistance, flexibility, and workability than conventional metal gaskets. (Example) Hereinafter, an example of the present invention will be described with reference to the drawings. This is a partially enlarged sectional view of the metal gasket produced by the manufacturing method of the present invention shown in FIGS. 1 and 2.
is a metal plate which is the base material of the metal gasket, and in this embodiment it is a steel plate. In this example, after thoroughly cleaning and degreasing the surface of the steel plate 1 with trichlorethylene, a thermosetting adhesive (phenol-modified nitrile rubber) 2 is applied to the surface, and expanded graphite powder is placed on top of it. A thin layer 3 of expanded graphite was deposited by coating with a compression roll to a thickness of 10-150 μm and then heat-treated in a heating oven at the curing temperature of 150°C for 5 minutes to form the material of the metal gasket. . Note that FIG. 1 shows a thin layer 3 of expanded graphite adhered to only one side of a metal plate 1 via a thermosetting adhesive 2, and FIG. 2 through which a thin layer 3 of expanded graphite is applied. Figures 3 to 5 show an example of an apparatus for mass-producing the material for metal gaskets according to the present invention. The metal plate 1 is wound around the metal plate 1, and the metal plate 1 is sent out in the direction of arrow B. 4 is a degreasing device for the metal plate 1, 5 is an adhesive coating device, and 6 is an adhesive drying device, and the metal plate 1 that has passed through this drying device 6 is transferred to an expanded graphite coating device for the next process as shown by arrow C. sent to. 4 shows an apparatus for coating only one side of the metal plate 1, and FIG. 5 shows an apparatus for coating both sides of the metal plate 1. 7 in the figure is expanded graphite powder,
8 is the hopper, 9 is a scraper for density adjustment, and 10 is a roll for thickness adjustment and compression. In addition to the above-mentioned phenol-modified nitrile rubber, examples of thermosetting adhesives include phenol resin,
Phenol-butadiene copolymerization, phenol-polyamide, bisphenol type epoxy, epoxy
Phenol, epoxy polyamide, butadiene
Examples include acrylonitrile. As mentioned above, the expanded graphite coating layer is obtained by laminating expanded graphite powder on a metal plate and rolling it with a compression roll to obtain a coating layer with the desired density and thickness. The test results are shown in Table 1 below.
【表】
以上の結果から、膨張黒鉛の密度は0.5〜
1.2g／cm3の範囲が適当であると考えられる。
またコーテイング層の厚さについて行つた試験
結果を示せば、次の第２表の通りである。[Table] From the above results, the density of expanded graphite is 0.5~
A range of 1.2 g/cm 3 is considered appropriate. Table 2 below shows the test results regarding the thickness of the coating layer.
【表】
以上の結果から、コーテイング厚さが30μm以
下の場合にはコーテイングむらが発生する。ま
た、コーテイング厚さが100μm以上の場合にはビ
ード加工時にビードのスソの部分で膨張黒鉛が剥
離することが認められた。これらの事実から判断
すると、コーテイングの厚さは30〜100μmの範囲
が最適であると考えられる。
また膨張黒鉛をコーテイングした本発明による
メタルガスケツトと従来のメタルガスケツトとの
耐熱性の比較試験結果を示せば、次の第３表の通
りである。[Table] From the above results, coating unevenness occurs when the coating thickness is 30 μm or less. Furthermore, when the coating thickness was 100 μm or more, it was observed that the expanded graphite peeled off at the hem of the bead during bead processing. Judging from these facts, it is considered that the optimal coating thickness is in the range of 30 to 100 μm. Table 3 below shows the results of a heat resistance comparison test between a metal gasket coated with expanded graphite according to the present invention and a conventional metal gasket.
【表】
以上の結果から、膨張黒鉛をコーテイングした
本発明によるメタルガスケツトは従来のメタルガ
スケツトと比較して、耐熱性がすぐれていること
がわかつた。
（発明の効果）
上述のように本発明においては、メタルガスケ
ツトの基板となる金属板の面に熱硬化性接着剤を
介して膨張黒鉛の薄層を被着した。そしてこの膨
張黒鉛は従来使用していた高ニトリルゴム、フツ
素ゴム、およびシリコーン樹脂よりも耐熱性にす
ぐれている上に、シール材としての柔軟性と加工
性にもすぐれているから、本発明によれば、従来
のメタルガスケツトより、耐熱性および柔軟性な
らびに加工性にすぐれたメタルガスケツトを得る
ことができるという効果が得られる。[Table] From the above results, it was found that the metal gasket of the present invention coated with expanded graphite has superior heat resistance compared to conventional metal gaskets. (Effects of the Invention) As described above, in the present invention, a thin layer of expanded graphite is adhered to the surface of a metal plate serving as a substrate of a metal gasket via a thermosetting adhesive. Expanded graphite has better heat resistance than conventionally used high nitrile rubber, fluorocarbon rubber, and silicone resin, and also has excellent flexibility and processability as a sealing material. According to the present invention, it is possible to obtain a metal gasket that has better heat resistance, flexibility, and workability than conventional metal gaskets.
第１図は金属板の片面に膨張黒鉛をコーテイン
グした本発明によるメタルガスケツトの部分拡大
断面図、第２図は金属板の両面に膨張黒鉛をコー
テイングした本発明によるメタルガスケツトの部
分拡大断面図、第３図〜第５図は本発明によるメ
タルガスケツトの製造工程の説明図である。
１……金属板、２……熱硬化性接着剤、３……
膨張黒鉛の薄層。
Fig. 1 is a partially enlarged cross-sectional view of a metal gasket according to the present invention in which one side of a metal plate is coated with expanded graphite, and Fig. 2 is a partially enlarged cross-sectional view of a metal gasket according to the present invention in which both sides of a metal plate are coated with expanded graphite. 3 to 5 are explanatory diagrams of the manufacturing process of the metal gasket according to the present invention. 1...Metal plate, 2...Thermosetting adhesive, 3...
Thin layer of expanded graphite.
Claims (1)
化性接着剤を塗布し、その上に膨張黒鉛粉末をの
せて圧縮ロールで10〜150μmの厚さでコーテイン
グし、その後加熱炉中で熱硬化性接着剤の硬化温
度で数分間加熱処理することにより膨張黒鉛の薄
層を被着させることを特徴とするメタルガスケツ
トの製造方法。1 After cleaning and degreasing the surface of the steel plate, apply a thermosetting adhesive to the surface, place expanded graphite powder on top of it, coat it with a thickness of 10 to 150 μm using a compression roll, and then heat it in a heating furnace. A method for manufacturing a metal gasket, characterized in that a thin layer of expanded graphite is applied by heat treatment for several minutes at the curing temperature of a curable adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26049988A JPH02107869A (en) | 1988-10-18 | 1988-10-18 | Metal gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26049988A JPH02107869A (en) | 1988-10-18 | 1988-10-18 | Metal gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02107869A JPH02107869A (en) | 1990-04-19 |
| JPH0563670B2 true JPH0563670B2 (en) | 1993-09-13 |
Family
ID=17348818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26049988A Granted JPH02107869A (en) | 1988-10-18 | 1988-10-18 | Metal gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02107869A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2082153T3 (en) * | 1991-03-25 | 1996-03-16 | Ishikawa Gasket | JOINT OF MULTIPLE PLATES WITH GRAPHITE SHEET. |
| JP2551447Y2 (en) * | 1991-04-05 | 1997-10-22 | 石川ガスケット株式会社 | gasket |
| WO1993008420A1 (en) * | 1991-10-21 | 1993-04-29 | Mccord Payen Incorporated | Embossed composite gasket |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53105653A (en) * | 1977-02-25 | 1978-09-13 | Nippon Pillar Packing | Method of producing composite gasket |
-
1988
- 1988-10-18 JP JP26049988A patent/JPH02107869A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53105653A (en) * | 1977-02-25 | 1978-09-13 | Nippon Pillar Packing | Method of producing composite gasket |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02107869A (en) | 1990-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5257603A (en) | Coated piston and process for applying coating | |
| US4973516A (en) | Gaskets for use in internal combustion engines | |
| GB2091824A (en) | Flat gaskets | |
| JPH1061773A (en) | Flat metal gasket and manufacture thereof | |
| JP2004278719A (en) | Metal gasket for cylinder head | |
| JPH0563670B2 (en) | ||
| JP3688024B2 (en) | Metal gasket and manufacturing method thereof | |
| US20040081532A1 (en) | Metal plane jointing structure and making method thereof | |
| JP2643054B2 (en) | Manufacturing method of heat insulating member with packing | |
| JPH01203644A (en) | Manufacture of metal gasket | |
| EP0770803B1 (en) | A gasket | |
| JPH0238760A (en) | Manufacture of rubber coat metal | |
| JPH03227622A (en) | Rubber-coated stainless steel plate | |
| JPH0236291A (en) | Gasket material and head gasket using said material | |
| JPH0225012Y2 (en) | ||
| JP2817485B2 (en) | Thin graphite gasket | |
| JP2700238B2 (en) | Heat fixing roller | |
| TWI724563B (en) | Gluing method for metal | |
| JPS6332458Y2 (en) | ||
| JPH023823Y2 (en) | ||
| JP2003028306A (en) | Gasket | |
| JPH0221572Y2 (en) | ||
| JPS607792A (en) | Heat resistant insulating substrate and method of producing same | |
| JPH09325632A (en) | Interlayer adhesion method and production of elastic roller by using the method | |
| JPS5927624Y2 (en) | Insulated substrate for printed wiring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080913 Year of fee payment: 15 |
|
| LAPS | Cancellation because of no payment of annual fees |