Engine cylinder head casting mold and cylinder head

Abstract

The invention discloses an engine cylinder cover casting mould. The engine cylinder cover casting mould comprises a sand core assembly and a steel mould body designed for being matched with the sand core assembly, wherein the sand core assembly is fixed to the steel mould body; the sand core assembly comprises a water jacket sand core, a waste passage sand core, an exhaust passage sand core and anintake passage sand core; a first vent hole core column is arranged at one end of the water jacket sand core; a second vent hole core column is arranged at the other end of the water jacket sand core; a third vent hole core column is arranged at the middle part of the water jacket sand core; a sand core waste passage for accommodating the waste passage sand core is formed in the water jacket sandcore; a gap is formed between the inner wall of the sand core waste passage and the waste passage sand core; the water jacket sand core comprises a plurality of cylinder cover moulding holes; a supporting column forming hole is formed between every two adjacent cylinder cover moulding holes. The invention further discloses a cylinder cover cast by using the engine cylinder cover casting mould. The engine cylinder cover casting mould not only can improve or even avoid defects such as pores, pinholes and others on the surface of the cast cylinder cover, but also can enhance the strength of a fire surface of the cylinder cover to prevent deformation of the fire surface of the cast cylinder cover.

Description

technical field [0001] The invention relates to the field of engines, in particular to a casting mold for an engine cylinder head and a cylinder head cast by using the mold. Background technique [0002] The role of the engine cylinder head casting mold (hereinafter referred to as the cylinder head) is to close the cylinder and form a combustion chamber with the cylinder. The surface forming the combustion chamber is called the fire surface. [0003] At present, aluminum alloy cylinder heads, which are widely used, are usually formed by gravity casting. However, during the casting process, the aluminum liquid is immersed and wrapped around the sand core. Since the gas in the sand core cannot be discharged in time, the casting is often loose, and the surface of the cylinder head has Casting defects such as blowholes and pinholes; and the existing cylinder heads cast with casting sand cores, most of which have a flat structure on the fire surface. During the test, the deformat...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a casting mold for engine cylinder head, to solve the deficiencies in the prior art, it can improve or even avoid defects such as air holes and pinholes on the surface of the cast cylinder head, and prevent the cast cylinder head from burning surface deformation

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