Rapid casting method for cylinder cover of diesel engine and sand core assembly

Abstract

The invention discloses a rapid casting method for a cylinder cover of a diesel engine. According to the method, a one-box one-piece sand core assembly is adopted, by a lateral pouring and bottom injecting type casting mode, molten iron is poured from one side of the sand core assembly and enters the cavity of a cylinder cover of a sand core, and thus, the cavity of the cylinder cover is filled with the molten iron from bottom to top. The method is suitable for rapid casting of a new product, the product verification period is short, the cost is low, and the requirement of real-time changing of the new product is met. The invention further discloses a sand core assembly for rapidly casting the cylinder cover of the diesel engine. The sand core assembly is compact in structure and reasonable in design, when the cylinder cover of the diesel engine is casted by the sand core assembly, mold filling is stable, slag stopping performance is good, air is discharged smoothly, core assembling isfacilitated, a casting of which the wall thickness is uniform and accurate is easily obtained, and the product quality of the casting is improved.

Description

technical field [0001] The invention relates to the technical field of engine manufacturing, more specifically, it relates to a rapid casting method of a cylinder head of a diesel engine and a sand core assembly. Background technique [0002] The cylinder head of a diesel engine is one of the core components of the entire diesel engine. The outside of the cylinder head has a cylinder head shape structure, and the inside is composed of complex structures such as intake passages, exhaust passages, cooling water jackets, oil passages, and injector seats. The bottom surface of the cylinder head has structures such as intake valves and exhaust valves. , is a typical complex and thin-walled box-type part, and the blanks are all obtained by casting. The production method of cylinder head made of cast iron is usually produced by mold molding line production mode. Most of them are horizontal pouring method of two pieces in one box or vertical casting method of multiple pieces in one...

AI Technical Summary

Problems solved by technology

For new products under verification and development, the disadvantages of the traditional casting method are: the cost of mold design and manufacturing is high, and the manufacturing cycle is long, which affects the development cycle of new products; and due to uncertain factors such as change and optimization of new products, mold In serious cases, the mold may be scrapped. Even if 3D printing technology is used, if you still refer to or continue to apply a box of two pieces or a box of multiple pieces casting process or sand core component casting scheme, it is not suitable for the rapid development of new products. Foundry product verification has a short cycle and low cost, and can adapt to the changing requirements of new products

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