Process for manufacturing cylinder head cover

Abstract

The invention relates to a process for manufacturing a cylinder head cover. The process includes the following steps of raw material preparation, mold preheating, paint spraying, core setting and mold assembling, smelting, pouring, cooling, cleaning and polishing, heat treatment, shot blasting and passivating treatment. According to the step of raw material preparation, a certain amount of copper, silicon, magnesium, manganese, nickel, titanium, zinc, chromium, lead, tin, ferrum and aluminum is weighed as required. According to the step of smelting, the raw materials in the first step are put into an electric furnace to be heated and smelted. According to the step of pouring, molten alloy in the fifth step is poured into a mold preheated in the second step. According to the step of cleaning and polishing, the method of sand blasting is adopted for cleaning the surfaces of castings. According to the step of heat treatment, parts obtained in the eighth step are subjected to quenching treatment and aging treatment. According to the step of shot blasting, the parts obtained in the ninth step are subjected to shot blasting. According to the step of passivating treatment, the parts obtained in the tenth step are put into a chromate solution for passivating. The process for manufacturing the cylinder head cover has the advantages of being reasonable in working procedure, capable of saving raw materials and reducing cost, easy to operate, stable in working, high in production efficiency, high in product percent of pass and good in forming quality.

Description

technical field [0001] The invention belongs to the technical field of auto parts manufacturing, and in particular relates to a manufacturing process of a cylinder head cover. Background technique [0002] In recent years, with the continuous development of science and technology, people's living standards have been continuously improved, the application of automobiles has become more and more extensive, the automobile industry has also developed rapidly, and the demand for automobiles has also continued to increase. The automobile industry has become an important part of the national economy. As a pillar industry, the development of the automobile industry provides a huge development space for the development of auto parts, especially foundry enterprises. The cylinder head is one of the key parts of the engine. It is related to the cylinder block, piston, crankcase, crankshaft and connecting rod. Parts make up the engine. The first and most basic function of the cylinder he...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the continuous development of science and technology, people's living standards have been continuously improved, the application of automobiles has become more and more extensive, the automobile industry has also developed rapidly, and the demand for automobiles has also continued to increase. The automobile industry has become an important part of the national economy. As a pillar industry, the development of the automobile industry provides a huge development space for the development of auto parts, especially foundry enterprises. The cylinder head is one of the key parts of the engine. It is related to the cylinder block, piston, crankcase, crankshaft and connecting rod. Parts make up the engine. The first and most basic function of the cylinder head cover is to cover and seal the cylinder head, keep the oil inside, and at the same time isolate pollutants such as dirt and moisture from the outside. The main function of the cylinder head cover is to seal The cylinder, together with the piston and the cylinder block, forms the combustion chamber, in which the compressed combustible gas mixture burns, expands, and pushes the piston, crankshaft and connecting rod mechanism to work. The working conditions of the cylinder head are very harsh, and the cylinder head not only bears high temperature during work , high pressure, but also to dissipate part of the heat of the engine to prevent the engine from overheating. In order to make it suitable for work, higher requirements are put forward for the material and production process of the cylinder head. At present, the material of the engine cylinder head is largely made of aluminum alloy. Some cylinder head covers have a long production cycle, complex operation, and short service life of the cylinder head cover. Therefore, a design with reasonable process, saving raw materials, uniform pouring, simple operation, stable work, high production efficiency, and product qualification rate The production process of high-quality and good-quality cylinder head covers is very necessary, and it plays an important role in improving the production efficiency and service life of cylinder head covers