Light-weight crankcase body casting pouring system and casting process thereof

Abstract

The invention discloses a light-weight crankcase casting pouring system and a casting process thereof. The pouring system comprises a sprue, a cross gate, branch sprues, branch cross gates, risers and ingates, wherein the sprue is connected with the cross gate, the cross gate is connected with the branch sprues, the branch sprues are connected with the branch cross gates, the risers are connected to the tops of the branch cross gates, and the ingates are connected to the tops of the branch cross gates; the bottoms of the branch cross gates are connected with the ingates, the ingates are connected with a casting; vertical pouring is adopted, a riser is arranged at the upper end of a bearing guard of the casting for feeding, and molten iron is fed into the riser and the ingates for pouring. According to the method, the high feeding capacity of vermicular graphite cast iron is used for feeding the bearing guard of the machine body or box casting, and due to the fact that the thickness of the bearing guard reaches 50 mm or above, feeding is difficult to achieve through graphitization expansion of molten iron; the riser is arranged on the upper portion of the bearing guard for feeding, in the solidification and shrinkage process of the bearing guard, molten iron in the riser enters the bearing guard to meet the requirement for molten iron needing to be supplemented for shrinkage of a casting, and the feeding effect is achieved.

Description

technical field [0001] The invention belongs to the field of casting technology, and in particular relates to a pouring system for lightweight crankcase body castings and a casting technology thereof. Background technique [0002] In order to meet the needs of high power, low emission and light weight of diesel engines, the requirements for the strength, wear resistance, corrosion resistance and thermal fatigue resistance of castings are higher. A new material - vermicular graphite cast iron is used, because of its high strength , Thin wall thickness, high compactness and other advantages have attracted widespread attention from people in the foundry industry, especially in mass production industries such as automobiles, tractors, and internal combustion engines, and have been widely developed and applied. [0003] Vermicular graphite cast iron is gradually widely used because of its high strength, thin wall thickness, light weight, high compactness, smooth casting surface, ...

AI Technical Summary

Problems solved by technology

[0003] Vermicular graphite cast iron is gradually widely used because of its high strength, thin wall thickness, light weight, high compactness, smooth casting surface, and high dimensional accuracy; It is difficult to rely on the graphitization expansion of molten iron itself to achieve feeding, and it is easy to produce shrinkage cavities or shrinkage porosity defects, which need to be solved by taking feeding measures in the process

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