Diesel Engine Cylinder Head Casting Process

Abstract

The invention discloses a diesel engine cylinder cover casting process including the following steps: step 1, using a sling to sling a chassis core onto a flatcar to flatwise place, blowing loose sand and dust in a core group inner chamber away with compressed air; step 2, inserting a full closed cooling jacket at a nail through hole position of the chassis core; step 3, slinging an upper cover plate sand core to place laterally, and blowing the loose sand and dust in the core group inner chamber away with the compressed air; step 4, slinging the upper cover plate sand core to a place above the chassis core for aligned core combination; and step 5, slinging the whole combined core group onto a molding line to put in to cast, and flowing with the molding line to pour. According to the diesel engine cylinder cover casting process, the full closed cooling jacket is arranged at the nail through hole position of the sand core, so that molten iron at the nail through hole can be quenched and simultaneously cooled for solidification, the effects of full fusion of the molten iron and blockage of water leakage and gas leakage can be achieved, production of shrinkage cavities of a casting can be reduced, the water leakage rate of a cylinder cover casting can be reduced, and cylinder cover casting quality and operation performances of an assembled engine can be improved.

Description

technical field [0001] The invention relates to the field of diesel engine casting, in particular to a diesel engine cylinder head casting process. Background technique [0002] At present, the normal production core setting process of K6000 cylinder head is: [0003] (1) Hoist the chassis core (together with the lower main body core) with a simple sling and place it on a flat car, and blow off the loose sand and dust in the inner cavity of the core group with compressed air. [0004] (2) Lift the sand core of the upper cover plate and place it sideways, and blow off the loose sand and dust in the inner cavity of the core group with compressed air. [0005] (3) Hang the sand core of the upper cover plate to the top of the chassis core to align and close the core. [0006] (4) Then hoist the entire core group after the core assembly to the molding line and put it into the mold, and then transfer to pouring with the flow of the molding line. [0007] Since the hole where th...

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Problems solved by technology

[0007] Since the hole where the sand core passes through the nail hole is a hollow column, the wall thickness of the hollow column is the thickest after the cylinder head is poured, and it needs to be machined and drilled to form the nail hole. Since the molten iron at the thickest part of the casting solidifies last, Without the supplement of molten iron from the outside, it is easy to produce cavities and shrinkage cavities in the center, which makes the cooling water cavity adjacent to the cylinder head through the nail hole easy to leak, which in turn affects the quality of the cylinder head casting and the operation of the engine after assembly performance

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