Production process of automobile air cylinder cover

Abstract

The invention discloses a production process of an automobile air cylinder cover. The production process aims to achieve the effects that the inner stress of each part of areas of the air cylinder cover can be uniformly distributed, the uniformity degree of each part of components of the cylinder cover is ensured, and the stress capability of each part is improved. According to the technical scheme, the production process comprises the following steps that (1) a material is selected, wherein the raw material comprises the following chemical components (%) of less than or equal to 1.3 of Fe, 9.6-12 of Si, 1.5-3.5 of Cu, less than or equal to 0.5 of Mn, less than or equal to 0.3 of Mg, less than or equal to 0.5 of Ni, less than or equal to 3.0 of Zn, less than or equal to 0.2 of Pb, less than or equal to 0.2 of Sn and the balance Al; and (2) smelting is carried out, wherein the raw material in the step (1) is smelt to reach the temperature of around 800-850 DEG C, the raw material is subjected to refining, degassing and slag removal through GBF treatment, then molten aluminum subjected to refining and degassing is transferred into a protective furnace of a low-pressure casting machine after standing for 10 minutes, and the molten aluminum to be poured is controlled between 690 DEG C and 700 DEG C. The production process of the automobile air cylinder cover is applicable to the field of production processes of air cylinder covers.

Description

technical field [0001] The invention relates to a production process of an automobile cylinder head. Background technique [0002] The function of the cylinder head is to seal the cylinder, form a combustion space together with the piston, and withstand the action of high temperature and high pressure gas. The cylinder head bears the mechanical load caused by the gas force and tightening the cylinder bolts, and also bears a high thermal load due to the contact with the high-temperature gas. In order to ensure good sealing of the cylinder, the cylinder head must neither be damaged nor deformed. For this, the cylinder head should have sufficient strength and rigidity. [0003] The cylinder head produced by the traditional production process for the production of cylinder head, when the force is applied, due to the uneven distribution of internal stress, it is easy to cause partial deformation, which affects the sealing effect of the cylinder head. Therefore, the cylinder hea...

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Problems solved by technology

[0003] The cylinder head produced by the traditional production process for the production of cylinder head, when the force is applied, due to the uneven distribution of internal stress, it is easy to cause partial deformation, which affects the sealing effect of the cylinder head. Therefore, the cylinder head should be solved in the production process. The uneven distribution of stress in the head and ensuring the uniformity of the structure of each part of the cylinder head are currently existing problems

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