Large marine copper propeller casting pouring system

Abstract

The invention discloses a large marine copper propeller casting pouring system. The large marine copper propeller casting pouring system comprises pouring system units which are connected in sequence as follows: a running gate, a labyrinth adapter trap, a side gate, a collected slag filtering unit, an annular track and inner gates; the running gate is connected above one flow inlet end of the labyrinth adapter trap; the labyrinth adapter trap is internally provided with a plurality of right-angled loops; the side gate is connected between the labyrinth adapter trap and the annular track; the collected slag filtering unit is arranged at a position of the side gate, close to the annular track, and a double-layer filter net is arranged inside the collected slag filtering unit; opposite to the position of an inlet, the annular runner is isolated by a vertical partition, two slag traps which are not communicated and are communicated with channels at two sides are arranged on the ends of the partition, and the slag traps are protruded towards the outer side of the annular track; and a downward concave platform is arranged on the inner side of the annular area of the annular track, and the upper annular plane of the concave platform is connected with the plurality of inner gates arranged vertically. The large marine copper propeller casting pouring system is a simple and high-efficiency pouring system, and the slag blocking capability of the pouring system can be greatly improved.

Description

technical field [0001] The invention relates to a gating system for pouring copper propeller castings for ships, in particular to equipment suitable for the production of copper propeller castings for large ships. Background technique [0002] The gating system is a series of channels responsible for introducing molten metal into the mold to form castings when producing castings. In addition to the role of drainage, the gating system also has the functions of improving the flow state of the molten metal, strengthening casting feeding, collecting slag and blocking slag, etc. Therefore, the rationality of casting gating system design is very important, which directly affects the intrinsic quality of castings. [0003] Although there are many manufacturers of marine copper propellers in China, there is no unified understanding of the gating system design of the propeller blank, so the gating systems used by each manufacturer are different. Especially for large copper propelle...

AI Technical Summary

Problems solved by technology

Because the copper liquid will produce a large amount of secondary oxidation slag in the initial stage of pouring, although a slag collecting bag and a filter screen are installed in the pouring system, due to the limited amount of slag collecting in the slag collecting bag and the large gap in the filter screen, the pouring process is still difficult. A large amount of oxidized slag enters the cavity through the filter

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