Inlay casting method for multiple steel pipe oil ducts of internal combustion engine body

Abstract

The invention relates to the field of casting of internal combustion engine bodies, in particular to an inlay casting method of multiple steel pipe oil ducts of an internal combustion engine body. Theinlay casting method comprises the following steps that S1, the length and diameters of steel pipes are selected according to the length and inner diameter of the steel pipe oil ducts of the internalcombustion engine body; S2, a positioning and supporting plate is designed; S3, the multiple steel pipes provided with the positioning and supporting plate are arranged in sand mold cavities of the multiple steel pipe oil ducts of the internal combustion engine body, and then core assembling, mold assembling, casting and mold disassembling are conducted; and S4, after mold disassembling of castings of the internal combustion engine body is completed, the portions, stretching out of the steel pipe oil ducts of the internal combustion engine body, of the multiple steel pipes are cut off. By adoption of the method, the multiple steel pipe oil ducts, meeting requirements, of the internal combustion engine body can be directly obtained, the size of the oil ducts is accurate, the center offsetis small, uniform wall thicknesses and small deformation of the oil ducts are ensured, and the quality of the castings of the internal combustion engine body is improved.

Description

technical field [0001] The invention relates to the field of casting of an internal combustion engine body, in particular to an inlay casting method for a plurality of steel pipe oil passages of an internal combustion engine body. Background technique [0002] The current internal combustion body oil channel is generally formed by sand tube casting, seamless steel pipe insert casting or casting into a solid body. Sand tube casting is suitable for castings with large oil passages, while castings processed after casting into solid bodies are likely to be scrapped due to shrinkage defects. The use of seamless steel pipes to cast oil passages avoids shrinkage and porosity of castings, but it is also prone to defects such as oil pipe deformation and center offset. When the main oil passage of the internal combustion engine body has multiple oil passages and the wall thickness between the oil passages is small, the seamless steel pipe is directly erected on the sand core / mold, an...

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Problems solved by technology

[0003] The invention provides a casting method of multiple steel pipe oil passages in an internal combustion engine body, whic

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