Air cylinder cover casting technology adopted under limited sand box size condition

Abstract

The invention discloses an air cylinder cover casting technology adopted under the limited sand box size condition. The air cylinder cover casting technology comprises the following steps that firstly, a combined sand core is designed, and the casting appearance outline of castings is formed through the combined sand core; secondly, air cylinder covers are arranged in an opposite-angle manner, template models are designed, and the template opposite-angle size length is utilized for opposite-angle arrangement of the models; thirdly, a sand core structure is optimized, and a circular bead is increased; and fourthly, the side face iron feeding bottom pouring type technology is conducted for side face iron feeding, and a pouring system is optimized. The castings form the casting appearance outline through a 1# body sand core, a 2# body sand core and a 3# body sand core. The total length of the sand cores is 1279 mm. The maximum length of a template is 1240 mm. The opposite-angle size length is 1498 mm to the maximum. The castings are arranged in a sand box in an opposite-angle manner, the sand core structure is optimized, the problem that the sand box size is limited is solved, and large-size cylinder cover casting production is achieved. Through side face iron feeding, pouring system optimizing and other measures, the adverse influences on pouring, solidification, cooling and other aspects due to the opposite-angle arrangement technology are avoided.

Description

technical field [0001] The invention belongs to the technical field of ferrous metal casting, and relates to a casting process of a cylinder head under the limited size condition of a sand box. Background technique [0002] Under the conditions of the existing technical scheme, the maximum cylinder head casting size that can be produced is 1100×400mm (length and width). Strength, the total wall thickness of the sand core at both ends is 93mm, the total length of the sand core is 1180mm, and the edge of the release plate at both ends is 30mm, so the process arrangement in the length direction can be realized, and because of the regular arrangement, it is beneficial to the pouring, solidification and cool down. To achieve parallel arrangement in the length direction, the size of the sand core cannot exceed 1180mm, and the length of the casting cannot exceed 1100mm. [0003] The authorized announcement number is CN103909229B, which discloses a diesel engine cylinder head cast...

AI Technical Summary

Problems solved by technology

[0006] Due to the large size of the cylinder head, the above existing technical solutions are limited by the size of the sand box and cannot be realized

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