The common defects of the housing casting include cracks, sand drop, slag inclusion, shrinkage porosity and rough grain, etc.

机架的常见缺陷有裂纹、掉砂、夹渣、缩孔缩松和晶粒粗大等。

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Provided is a casting mold device capable of keeping constant the clearance between a sleeve inner circumference and a bore pin outer circumference while preventing the drop of a sleeve.

提供一种铸造模具装置，能够在防止套筒下落的同时，在套筒内周面和钻孔销外周面之间维持固定的间隔。

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Main craft: the etching (nips board), the pressure to flush, the note paint (to top up), silk India, the drop rubber, to imitate the enamel, the zinc base alloy compression casting and so on.

主要工艺：蚀刻(咬板)、压冲、注漆(填油)、丝印、滴胶、仿珐琅、锌合金压铸等。

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