| 摘要 |
PURPOSE: To prolong the life of the gasket by providing a metal core having a pair of facings of a material other than asbestos on both sides of the core, and arranging thermally conductive material directly contacting at least one of the sides on the metal core. CONSTITUTION: A cylinder head gasket 10 has a metal core 12 of an internal structure having a flat upper surface 14 and a flat back surface 16 opposite to each other. A thermally conductive layer 18 directly contacts the flat upper surface 14. A plurality of tongues 24 are made as the metal core 12. The thermally conductive layer 18 and each of the gasket facing layers 20, 20 are fastened tightly to the flat surfaces 14, 16 of the metal core 12 mechanically by rolling with a group of smooth calibrating rollers. A steel flange member 26 is arranged and bleached by combustion. Thus the thermally conductive layer 18 transfers heat from the flange member 26 bleached by combustion to the cooler region as long as the flange member 26 is bleached in hot spots. By this way, the transfer of heat is facilitated, so it is possible to prolong the life.
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