| 摘要 |
<p>A metal gasket (10) for use in sealing between a cylinder head (12) and a block (14) of an engine (16) includes at least one layer (37) formed with at least one opening therethrough and a deformation feature in the form of a sealing bead (34), stopper (40), or both surrounding the opening. The gasket layer is fabricated of austemper-hardenable steel formed when in an annealed state and thereafter austempered to harden the layer and relieve residual forming stresses. During austempering, the layer is supported in a porous fixture that retains the layer against movement out of its plane while permitting it to move within its plane. The fixture has coarse expanded metal exoskeleton liner with wire mesh panels. The mesh liners maintain molten salt against the layers which acts as a thermal cushion to discourage warpage.</p> |
