Aluminum alloy diesel engine cylinder cover casting method

Abstract

The present invention discloses an aluminum alloy diesel engine cylinder cover casting method, which comprises: processing metal type modules, wherein the metal type modules comprise a plate-shaped metal module and a square metal module, the plate-shaped metal module is used for forming the combustion chamber part of the aluminum alloy diesel engine cylinder cover, and the square metal module is used for forming both end parts of the aluminum alloy diesel engine cylinder cover; processing chassis sand core, wherein the chassis sand core is processed and formed by adopting a digitalized mold-free forming machine, and installation positions for inlaying the plate-shaped metal module and the square metal module are respectively processed on the inner bottom surface and the inner surfaces on both ends of the chassis sand core; assembling the sand core, wherein the metal type modules are inlayed on the corresponding installation positions of the chassis sand core, and then the upper water jacket sand core, the lower water jacket sand core, the gas inlet channel sand core, the gas outlet channel sand core, the runner sand core, the tappet hole sand core, the cover disk sand core and the pouring cup sand core are assembled; and adopting a side-pouring bottom-pouring way to cast the aluminum alloy liquid. With the method, the good quality microstructure of the key part of the cast can be obtained.

Description

technical field [0001] The invention relates to the field, in particular to a casting method of an aluminum alloy diesel engine cylinder head. Background technique [0002] The cylinder head of a diesel engine (also known as the cylinder head) is an important part of a diesel engine. The outside of the cylinder head has an outer shape, and the inside has structures such as intake passages, exhaust passages, cooling water passages, oil passages and injector seats. The bottom surface of the cylinder head There are intake valves, exhaust valves and other structures. At the same time, the bottom surface of the cylinder head is also the top of the combustion chamber of the diesel engine. Its structure is complex. The blank is generally made by casting. In most cases, its material is usually cast iron. [0003] However, for high-power, lightweight diesel engines, especially for cars or high-performance off-road vehicles, the diesel engine cylinder head is made of aluminum alloy, a...

AI Technical Summary

Problems solved by technology

However, the mold material in the casting method of the metal mold usually adopts a quarto mold of hot work mold steel, with many accessories, and the design and manufacture of the connection with the equipment interface, etc. The mold design and manufacturing cost is relatively high, and the manufacturing cycle is long. The method is mostly used in mature products. If it is used in the development of new products, it will affect the development cycle of new products, and due to uncertain factors such as change and optimization of new products, it will cause changes in molds, and in severe cases, it may lead to scrapping of molds.

In short, neither of the above two casting methods can meet the requirements of rapid casting verification of prototypes of new aluminum alloy diesel engine cylinder heads.

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