| 摘要 |
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 meta l exoskeleton liner with wire mesh panels. The mesh liners maintain molten sal t against the layers which acts as a thermal cushion to discourage warpage.</S DOAB> |
