Method for casting cylinder cover of low-speed diesel for large-bore vessel

The invention relates to a method for casting a cylinder cover of a low-speed diesel for a large-bore vessel, which mainly comprises the steps of planning a casting process, manufacturing a wood mould, manufacturing a sand mould, assembling the moulds, pouring, cooling and cleaning cast. The method comprises the following steps in details: (1) planning the casting process of the cylinder cover, and designing a parting surface and a casting system according to a flat parting method; (2) manufacturing the wood mould according to the technological requirement, and positioning the wood mould on a template; (3) manufacturing cast and placing risers; (4) assembling the moulds, and drying the sand mould; (5) smelting cast solution, blowing inert gas and feeding in the smelting process; (6) pouring the cast; and (7) preserving the heat and cooling the cast, and carrying out performance heat treatment on the cast. The method manufactures the cylinder cover of the low-speed large-bore diesel by a casting mode instead of forging, can greatly reduce production cost, and shorten production period.