公开(公告)号：US20140048033A1

公开(公告)日：2014-02-20

申请号：US13589216

申请日：2012-08-20

Applicant: DEVIN R. HESS ,  GERALD F. JOHNSON

Inventor： DEVIN R. HESS ,  GERALD F. JOHNSON

IPC: F02F1/24 ,  B32B15/01 ,  B22D19/00 ,  B32B3/10

CPC classification number: F02F1/24 ,  B22D19/0009 ,  B32B3/266 ,  B32B7/02 ,  B32B15/01 ,  B32B2307/302 ,  B32B2605/00 ,  F02F2001/249 ,  F05C2201/021 ,  F05C2201/0448 ,  F05C2201/903 ,  Y10T428/12361

Abstract: A cylinder head is formed by positioning a clad preform including a first and second layer in a casting die cavity with the second layer in communication with the die cavity and the first layer facing outwardly to define a combustion surface. Molten material provided to the die cavity is solidified to form a cast portion metallurgically bonded to the second layer. An aperture of the preform forms a port in fluid communication with a passage of the cast portion. A plurality of dome-shaped preforms may define the combustion chambers of a cylinder head formed by the method. The preform may define a cylinder head face. The first layer may be a steel-based layer, and the second layer and cast portion may be aluminum-based, such that the first layer and combustion surface has higher thermal fatigue strength relative to the cast portion.

Abstract translation: 气缸盖通过将包括第一和第二层的包层预型体定位在铸模腔中而形成，第二层与模腔连通，第一层面向外以限定燃烧表面。 提供到模腔的熔融材料被固化以形成冶金结合到第二层的铸造部分。 预型件的孔形成与浇铸部分的通道流体连通的端口。 多个圆顶状预制件可以限定由该方法形成的气缸盖的燃烧室。 预制件可以限定气缸盖面。 第一层可以是钢基层，第二层和铸造部分可以是铝基的，使得第一层和燃烧表面相对于铸造部分具有较高的热疲劳强度。