Short wheelchair frame extrusion casting system

Abstract

The invention provides a short wheelchair frame extrusion casting system, and belongs to the technical field of the structure of an extrusion casting mold. The short wheelchair frame extrusion casting system comprises a casting head, a long main runner, a short main runner, a plurality of branch runners, a casting cavity, more than four slag ladles and a plurality of exhaust blocks, wherein an inner pouring gate is formed in each branch runner; the casting head is connected to the main runners which are connected to the branch runners; the branch runners are connected to the casting cavity; the filling tail end of the casting cavity is connected to the slag ladles and the exhaust blocks; and the long main runner and the short main runner extend out along the left and right sides of the casting head. The short wheelchair frame extrusion casting system has the beneficial effects that the filing time of an aluminum alloy solution is short, the temperature loss is low, molding and feeding are facilitated, the void ratio of products is low, the internal quality of extrusion castings is high, the inner pouring gates are liable to be cut off, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of squeeze casting mold structures, in particular to a squeeze casting system for a wheelchair short frame. Background technique [0002] Squeeze casting combines the advantages of casting and forging. It is a high-quality and efficient near-net-shaping process for metal materials, which can be used to produce castings with complex structures and high comprehensive performance. The short frame is an important load-bearing part of the wheelchair. The wall thickness of the side of the casting is 6mm, while the wall thickness of the section of the bearing installation hole is relatively large, which is very easy to cause shrinkage cavity and shrinkage defects due to insufficient feeding of the ingate; the internal design of the casting There are reinforcing ribs and the structure is more complicated. The castings produced by the traditional ingate feeding method have a large porosity, and the surface deformatio...

AI Technical Summary

Problems solved by technology

The short frame is an important load-bearing part of the wheelchair. The wall thickness of the side of the casting is 6mm, while the wall thickness of the section of the bearing installation hole is relatively large, which is very easy to cause shrinkage cavity and shrinkage defects due to insufficient feeding of the ingate; the internal design of the casting There are reinforcing ribs and the structure is more complicated. The casting produced by the traditional ingate feeding method has a large porosity, and the surface deformation of the casting is large after heat treatment, and the ingate is large, which is not easy to cut. The larger incision increases the size of the casting. machining difficulty

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