Production technology for manufacturing automobile cylinder by aid of crankcase core module

Abstract

The invention discloses production technology for manufacturing an automobile cylinder by the aid of a crankcase core module. Molten iron is filled from bottom to top, and air in a cavity is 'squeezed' out of the cavity by the molten iron from bottom to top and exhausted from a strain relief. As a molten iron filling direction is consistent with an air exhausting direction, intersection is avoided, less secondary slag is generated, and forming quality can be improved. Moreover, as intersection is avoided, the molten iron can be completely filled in the whole cavity, dead space is avoided, andstable wall thickness can be kept.

Description

technical field [0001] The invention relates to a production process of an automobile cylinder body, in particular to a production process for manufacturing an automobile cylinder body by using a crankcase core module. Background technique [0002] Most of the existing general automobile engine cylinder block products use the horizontal pouring process in the crankcase core. During the filling process, the molten iron is filled from left to right (but from right to left, it is filled horizontally) , and the gas in the cavity is discharged from the bottom to the top, and the two will produce a cross phenomenon. After the molten iron and the gas cross, there will be two problems. One is to generate a large amount of slag (commonly known as secondary slagging), which may remain in the In the cavity; the second is that the molten iron cannot fill the gap of about 3mm at the intersection, that is, the product wall thickness of about 3mm cannot be formed. Both situations can rend...

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Problems solved by technology

[0002] Most of the existing general automobile engine cylinder block products use the horizontal pouring process in the crankcase core. During the filling process, the molten iron is filled from left to right (but from right to left, it is filled horizontally) , and the gas in the cavity is discharged from the bottom to the top, and the two will produce a cross phenomenon. After the molten iron and the gas cross, there will be two problems. One is to generate a large amount of slag (commonly known as secondary slagging), which may remain in the The second is that the molten iron cannot fill the gap of about 3mm at the intersection, that is, it cannot form a product wall thickness of about 3mm

Both situations can render the product obsolete

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