A Vertical Line Production Process for Ductile Iron Molds with Large Differences in Wall Thickness

Abstract

The invention discloses a process for producing a ductile iron piece mold with large wall thickness difference through a vertical line. The process comprises a pouring device. The pouring device comprises a pouring gate assembly, a riser assembly and a vertically-arranged pouring gate. The pouring gate assembly and the riser assembly are both inclined upwards relative to the pouring gate and are both communicated with the pouring gate, the riser assembly is arranged above the pouring gate assembly, and outlets of the riser assembly and the pouring gate assembly correspond to the thick and large positions of the ductile iron part, wherein a necking neck is arranged at the outlet of the pouring gate assembly, a riser neck is arranged at the outlet of the riser assembly, and an intercepting block is arranged on the pouring gate and located above the pouring gate assembly. With application of the process for producing the ductile iron piece mold with the large wall thickness difference through the vertical line, efficient production of ductile iron pieces with the large wall thickness difference is realized and shrinkage cavities in the thick and large positions and cold shut in the thin wall positions can be avoided.

Description

technical field [0001] The invention relates to the technical field of methods for producing ductile iron parts with large differences in wall thickness, in particular to a process for producing ductile iron parts with large differences in wall thickness vertically. Background technique [0002] For castings, especially for ductile iron with large wall thickness differences, the thin-walled position is 2.6-3.2mm, and the thick-walled position is 25.7mm. In the prior art, shrinkage cavities are prone to occur in thick and large positions, and cold shuts are prone to occur in thin-walled positions. Through horizontal coated sand casting, the casting process can be solved, but the production efficiency is low. Due to the problems of environmental protection and production efficiency, it is necessary to produce ductile iron parts with large differences in wall thickness in the vertical line. Contents of the invention [0003] The purpose of the present invention is to provid...

AI Technical Summary

Problems solved by technology

In the prior art, shrinkage cavities are prone to occur in thick and large positions, and cold shuts are prone to occur in thin-walled positions

Through horizontal coated sand casting, the casting process can be solved, but the production efficiency is low

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