JPS6188076A - Metallic gasket - Google Patents
Metallic gasketInfo
- Publication number
- JPS6188076A JPS6188076A JP20946184A JP20946184A JPS6188076A JP S6188076 A JPS6188076 A JP S6188076A JP 20946184 A JP20946184 A JP 20946184A JP 20946184 A JP20946184 A JP 20946184A JP S6188076 A JPS6188076 A JP S6188076A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- bead
- metal gasket
- gasket
- hardness
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 239000011324 bead Substances 0.000 claims abstract description 22
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 3
- 239000011701 zinc Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 239000002184 metal Substances 0.000 claims description 34
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000007423 decrease Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000007747 plating Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 13
- 239000011247 coating layer Substances 0.000 description 5
- 239000000565 sealant Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003746 surface roughness Effects 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
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0806—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing characterised by material or surface treatment
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］
この発明は金属ガスケットに係り、特に綱板の硬度を上
昇させてビード部位のばね弾力の低下を防止し、良好な
シール効果を発揮する金属ガスケットに関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a metal gasket, and in particular to a metal gasket that increases the hardness of the steel plate to prevent a decrease in spring elasticity at the bead portion and exhibits a good sealing effect. Regarding gaskets.
［従来の技術］
被接合部材の接合面間、例えばシリンダヘッドとシリン
ダブロック等の接合面間のシール手段として、金属ガス
ケットが提案されている。この金属ガスケットは、弾性
を有する金属板にビードを形成し、このと−ドを前記接
合面に適宜の押圧力によって押圧してシールを果してい
る。[Prior Art] A metal gasket has been proposed as a sealing means between joint surfaces of members to be joined, for example, between a cylinder head and a cylinder block. This metal gasket has a bead formed on an elastic metal plate, and the bead is pressed against the joint surface with an appropriate pressing force to achieve a seal.
［発明が解決しようとする問題点］
ところで、前記被接合部材に熱歪みや締付は等によって
変形を生じた場合、金属ガスケットに過度の力が作用す
るおそれがある。例えば、アルミ材のシリンダヘッドと
鋳鉄のシリンダブロックとからなる内燃機関においては
、アルミ材の熱膨張係数が鋳鉄よりも大きいので、駆動
時に熱歪みを生じ変形する。この変形で、接合面間の大
きくなった間隙はビードの弾性復元力で吸収しシール効
果を維持し得るが、間隙が小さくなった接合面間ではガ
スケットに過度の力が作用する。この過度の力により、
第４．５図に示す如く、金属ガスケット２のビード６部
位が塑性変形され、実線で示す製作時のビード６のたわ
みたる高さＨ（０，３鶴）が１点鎖線の高さｈ （０，
０７）まで低くなり、ビードの弾性復元力を減少させ、
シール効果の低下を招く不都合がある。[Problems to be Solved by the Invention] By the way, if the members to be joined are deformed due to thermal distortion, tightening, etc., there is a risk that excessive force will act on the metal gasket. For example, in an internal combustion engine that includes a cylinder head made of aluminum and a cylinder block made of cast iron, the thermal expansion coefficient of the aluminum material is larger than that of cast iron, so the engine is thermally strained and deformed during operation. Due to this deformation, the increased gap between the joint surfaces can be absorbed by the elastic restoring force of the bead and the sealing effect can be maintained, but excessive force acts on the gasket between the joint surfaces where the gap has become smaller. This excessive force causes
As shown in Fig. 4.5, the bead 6 portion of the metal gasket 2 is plastically deformed, and the deflection height H (0.3 cranes) of the bead 6 during manufacture, shown by the solid line, is the height h ( 0,
07), reducing the elastic restoring force of the bead,
This has the disadvantage of reducing the sealing effect.
また、第６図に示す如く金属ガスケット２の使用時にお
いて、ｍｉ４表面の塗料の塗着状態が悪いため、接合面
１４．１６との当接部位の塗装層８が側方に移動し、ビ
ード６部位の密封性を損い、シール効果を低下させると
いう不都合もある。In addition, as shown in FIG. 6, when the metal gasket 2 is used, due to poor coating of the paint on the surface of the mi4, the paint layer 8 at the contact area with the joint surface 14, 16 moves laterally, causing beads to form. There is also the disadvantage that the sealing performance of the six parts is impaired and the sealing effect is reduced.
［発明の目的］
そこでこの発明の目的は、上述不都合を除去するために
、金属ガスケットの綱板の硬度をＨｖ４５０〜５５０に
設定することにより、ビード部位のばね弾力の低下を防
止し、良好なシール効果を発揮し得る金属ガスケットを
実現するにある。[Object of the Invention] Therefore, in order to eliminate the above-mentioned disadvantages, the object of the present invention is to prevent a decrease in the spring elasticity of the bead portion by setting the hardness of the steel plate of the metal gasket to Hv 450 to 550, and to obtain a good The objective is to realize a metal gasket that can exhibit a sealing effect.
［問題点を解決するための手段］
この目的を達成するためにこの発明は、ビードを有する
金属ガスケットにおいて、この金属ガスケットの綱板に
亜鉛を被覆した後に所望形状に打抜きビード形成後に熱
処理を行って硬度をＨＶ４５０〜５５０に設定したこと
を特徴とする。[Means for Solving the Problems] In order to achieve this object, the present invention provides a metal gasket having beads, in which a steel plate of the metal gasket is coated with zinc, then punched into a desired shape, beads are formed, and then heat treated. The hardness is set to HV450-550.
［作用］ ”
上述の如く構成したことにより、硬度をＨＶ４５θ〜５
５０に設定した綱板の両面に塗装層を形成して金属ガス
ケットを構成し、この金属ガスケットのばね弾力の低下
を防止して良好なシール効果を発揮させる。[Function] ” By configuring as described above, the hardness can be increased to HV45θ~5.
A metal gasket is constructed by forming a coating layer on both sides of a steel plate set at 50 mm, and a good sealing effect is exhibited by preventing the spring elasticity of the metal gasket from decreasing.
［実施例］
以下図面に基づいてこの発明の実施例を詳細に説明する
。[Examples] Examples of the present invention will be described in detail below based on the drawings.
第１〜４図はこの発明の実施例を示すものでる。1 to 4 show embodiments of this invention.
第１．２図において、２は金属ガスケットである。In Figure 1.2, 2 is a metal gasket.
この金属ガスケット２は、圧延や熱処理等の作業工程に
よって硬度を例えばＨｖ５５０程度に設定した弾性金属
板たる綱板４と、この綱板４に高さＨを０．１５ｔｍに
形成したビード６と、綱板４の両面にミクロシール剤を
塗着した厚さ３０μ以下の塗装層８とからなる。すなわ
ち、前記綱板４には、まず亜鉛メッキを施し、その後所
望のガスケット形状に打抜き、次いで綱板４を絞ってビ
ード６を形成し、この綱板４に熱処理（析出硬化処理）
を施して硬度をＨＶ４５０〜５５０に設定する。This metal gasket 2 includes a steel plate 4 which is an elastic metal plate whose hardness is set to about Hv550 through work processes such as rolling and heat treatment, and a bead 6 formed on the steel plate 4 to a height H of 0.15 tm. It consists of a coating layer 8 with a thickness of 30 μm or less, which is coated with a micro sealant on both sides of the steel plate 4. That is, the steel plate 4 is first galvanized, then punched into a desired gasket shape, the steel plate 4 is then squeezed to form a bead 6, and the steel plate 4 is subjected to heat treatment (precipitation hardening treatment).
to set the hardness to HV450-550.
そして、綱板４の両面にミクロシール剤を塗布して金属
ガスケット２を構成する。Then, a micro sealant is applied to both sides of the steel plate 4 to form the metal gasket 2.
このように構成された金属ガスケット２を、第２図に示
す如く、被接合材たるシリンダヘッド１０とシリンダブ
ロック１２との各接合面１４．１６間に介装する。この
とき、ボルト（図示せず）等で締付けることにより、ビ
ード６の頂部１８と両基部２０．２０とは接合面１４．
１６に押圧され、シールを果す。As shown in FIG. 2, the metal gasket 2 thus constructed is interposed between the joint surfaces 14 and 16 of the cylinder head 10 and the cylinder block 12, which are the materials to be joined. At this time, by tightening with a bolt (not shown) or the like, the top 18 and both bases 20, 20 of the bead 6 are connected to the joint surface 14.
16 to complete the seal.
この状態で機関を駆動すると、熱歪みにより接合面１４
．１６間の金属ガスケット２に大きな力が作用する。こ
の場合従来の金属ガスケットでは、綱板の弾性限度範囲
を越えることにより、綱板を塑性変形させ、シール効果
の低下を招いた。しかし、この発明によれば、金属ガス
ケット２の綱板゛４の硬度をＨｖ５５０程度に設定した
ことにより、第３図に示す如き応力歪み線図において、
点０から点Ｐまでの弾性限度範囲が大となり、ばね弾力
の低下を防止してへたりを少なくするとともに、良好な
シール効果を得ることができる。また、前記綱板４の硬
度を高く設定することにより、第４図に破線で示す如く
、へたりテスト後の綱板４のたわみ量を変化させる不都
合がなく、しかも金属ガスケット製造時にビード高さを
低く設定しても所望の面圧を確保することができ、金属
ガスゲットの製造に際し、製造の容易化やコストの低減
に寄与するものである。If the engine is driven in this state, the bonding surface 14 will be damaged due to thermal distortion.
．． A large force acts on the metal gasket 2 between the parts 16 and 16. In this case, with conventional metal gaskets, the elastic limit range of the steel plates was exceeded, causing plastic deformation of the steel plates, resulting in a reduction in sealing effectiveness. However, according to the present invention, by setting the hardness of the steel plate 4 of the metal gasket 2 to about Hv550, in the stress strain diagram as shown in FIG.
The elastic limit range from point 0 to point P is widened, preventing a decrease in spring elasticity and reducing sag, as well as providing a good sealing effect. Furthermore, by setting the hardness of the steel plate 4 to be high, as shown by the broken line in FIG. It is possible to secure a desired surface pressure even if is set low, and this contributes to simplification of manufacturing and cost reduction when manufacturing a metal gas get.
更に、前記綱板４の硬度をＨＶ５５０程度に設定する際
に、圧延や熱処理等の作業工程を経ることにより、弾性
金属板４の両面が荒れるものである。このとき、弾性金
属板４両面の荒れを利用してミクロシール剤を塗着し、
塗装層８を形成することにより、金属ガスケット２使用
時の塗装層８の移動を防止でき、被接合面とのなじみを
良好として、ビード部位の密封性を向上し得るものであ
る。Further, when the hardness of the steel plate 4 is set to about HV550, both sides of the elastic metal plate 4 become rough due to working steps such as rolling and heat treatment. At this time, apply a micro sealant using the roughness on both sides of the elastic metal plate 4,
By forming the coating layer 8, it is possible to prevent the coating layer 8 from moving when the metal gasket 2 is used, and it is possible to improve the compatibility with the surfaces to be joined, thereby improving the sealing performance of the bead portion.
［発明の効果］
以上詳細に説明した如くこの発明によれば、金属ガスヶ
・７トの綱板の硬度をＨＶ４５０〜５５０に設定する構
成としたので、ビード部位のばね弾力の低下を防止し、
良好なシール効果を発揮させ得る。また、熱処理後の弾
性金属板の表面あらさによってミクロシール剤の付着状
態が良好となり、シール性の向上に寄与する。[Effects of the Invention] As explained in detail above, according to the present invention, the hardness of the metal gas cable plate is set to HV450 to 550, so that a decrease in the spring elasticity of the bead portion is prevented,
A good sealing effect can be exhibited. Furthermore, the surface roughness of the elastic metal plate after heat treatment improves the adhesion of the microsealant, contributing to improved sealing performance.
第１〜４図はこの発明の実施例を示し、第１図は金属ガ
スケットの断面図、第２図は金属ガスケットの被接合部
間への介装状態を示す断面図、第３図は金属の応力歪み
線図、第４図は綱板の弾性特性を示す図である。
第５．６図はこの発明の従来技術を示す断面図である。
図において、２は金属ガスケット、４は綱板、６はビー
ド、８は塗装層である。
代理人 弁理士 西 郷 義 美
代理人 弁理士 原 １）幸 男
第１図
第２図1 to 4 show embodiments of the present invention, FIG. 1 is a sectional view of a metal gasket, FIG. 2 is a sectional view showing a state in which a metal gasket is inserted between parts to be joined, and FIG. FIG. 4 is a stress strain diagram showing the elastic properties of the steel plate. FIG. 5.6 is a sectional view showing the prior art of the present invention. In the figure, 2 is a metal gasket, 4 is a steel plate, 6 is a bead, and 8 is a coating layer. Agent Patent Attorney Yoshimi Saigo Agent Patent Attorney Hara 1) Yukio Figure 1 Figure 2
Claims (1)
ケットの綱板に亜鉛を被覆した後に所望形状に打抜きビ
ード形成後に熱処理を行って硬度をＨｖ４５０〜５５０
に設定したことを特徴とする金属ガスケット。In a metal gasket having a bead, the steel plate of the metal gasket is coated with zinc and then punched into a desired shape to form a bead and then heat treated to have a hardness of Hv450-550.
A metal gasket characterized by being set to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20946184A JPS6188076A (en) | 1984-10-05 | 1984-10-05 | Metallic gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20946184A JPS6188076A (en) | 1984-10-05 | 1984-10-05 | Metallic gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6188076A true JPS6188076A (en) | 1986-05-06 |
Family
ID=16573253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20946184A Pending JPS6188076A (en) | 1984-10-05 | 1984-10-05 | Metallic gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6188076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0312664U (en) * | 1989-06-24 | 1991-02-08 |
-
1984
- 1984-10-05 JP JP20946184A patent/JPS6188076A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0312664U (en) * | 1989-06-24 | 1991-02-08 |
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