Tool for reinforcing shells of frame-shaped investment castings

Abstract

Provided is a tool for reinforcing shells of frame-shaped investment castings, comprising a base plate, two main plates arranged in parallel, two side plates disposed between the two main plates, anda fastening member for fastening investment castings. The two main plates are both mounted above the base plate; one ends of the side plates are mounted on one main plate, and the other ends of the side plates are mounted on the other main plate; the two main plates and the two side plates commonly define a cavity; and the investment castings are provided in the cavity. The present invention avoids a limitation that sand collapses due to baking at a certain temperature, and adopts a metal material and a high-temperature resistant material to adapt to high-temperature heating and to prevent environmental pollution.

Description

technical field [0001] The invention relates to the technical field of shell reinforcement, in particular to a tooling for shell reinforcement of frame-type precision castings. Background technique [0002] The existing shell reinforcement usually uses the method of sand casting to make shells. Place the finished shell in the iron frame for rectangular sand molding, fill the gap between the shell and the iron frame with silica sand, and hold it tightly after the silica sand solidifies. The shell is fixed. The advantage of this method is that the sand is in close contact with the shell at room temperature and the sand strength is very high. However, after baking at a certain temperature, the sand will collapse, which directly leads to a significant decrease in the reinforcing force of the shell. [0003] The prior art discloses a cage structure composed of longitudinal keels and transverse beams, but the reinforcement mentioned is a flexible rope, which requires the flexible ...

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Problems solved by technology

[0002] The existing shell reinforcement usually uses the method of sand casting to make shells. Place the finished shell in the iron frame for rectangular sand molding, fill the gap between the shell and the iron frame with silica sand, and hold it tightly after the silica sand solidifies. The shell is fixed. The advantage of this method is that the sand is in close contact with the shell at room temperature and the sand strength is very high. However, after baking at a certain temperature, the sand will collapse, which directly leads to a significant decrease in the reinforcement of the shell.

[0003] The prior art discloses a cage structure composed of longitudinal keels and transverse beams, but the reinforcement mentioned is a flexible rope, which requires the flexible rope to be a non-metallic material with high temperature resistance and relatively small line / body shrinkage. has limitations

At the same time, the bottom plate adopted is a single solid structure. The shape of this tooling can be adapted to different shapes of non-standard shells, but it is not possible to process one tooling suitable for non-standard shapes of various shapes. There is a problem of repeated processing and the reinforcement of the body to adapt to it. question

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