Iron sand lined steel casting horizontal type shaping, vertical pouring casing method

Abstract

The invention relates to a method for the horizontal molding and vertical casting of a sand-coated steel cast of an iron-mold, the method includes the following steps: a, an upper mold plate and a lower mold plate are horizontally molded; a pouring head is arranged at one side of the mold plate; the pouring head is plugged by a steel plate for sand shooting; after that the sand shooting, the steel plate is taken away; b, after mold assembling, the iron mold is vertically arranged; the pouring head is led to face upwards and is arranged in a prepared frame; then casting is carried out. The technique is simplified in design and fully complements shrinking; the cast doses not generate a shrinkage cavity and a shrinkage porosity; besides, the yield is high and the casting temperature is relatively low, thus being beneficial for energy saving.

Description

technical field [0001] The present invention belongs to casting method. In particular, it relates to a horizontal molding and vertical pouring casting method for iron sand-covered steel castings. Background technique [0002] At present, in the production practice of sand-covered iron molds, all the horizontal casting and horizontal casting processes are used. For ductile iron parts (including other iron castings), because of the secondary expansion of graphitization during the solidification of the molten iron, it is no riser. Or small riser casting, the process design is simple, and the casting does not produce or rarely produces shrinkage cavity and shrinkage porosity. However, due to the fact that there is no secondary graphitization expansion in the solidification process of molten steel, and its shrinkage rate itself is large, even if the iron mold sand-covered casting process (fast cooling, sequential solidification, and strong self-feeding ability) is still necessar...

AI Technical Summary

Problems solved by technology

Otherwise, shrinkage cavities will inevitably occur, causing castings to be scrapped

Iron sand-covered casting technology is used to cast plates and columns. Setting a large riser is not only difficult to determine the position, but also often cannot eliminate shrinkage defects. Setting multiple risers will greatly reduce the yield.