A molding runner with a wax discharge port and its preparation and plugging method

A technology of wax discharge port and runner, which is used in casting molding equipment, molds, cores, etc. to accelerate the dewaxing efficiency and quality, reduce wax residue, and reduce shrinkage cavities.

Active Publication Date: 2017-12-12
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of plugging the wax discharge port in the prior art, and to provide a molding runner with a wax discharge port and its preparation and plugging method

Method used

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  • A molding runner with a wax discharge port and its preparation and plugging method
  • A molding runner with a wax discharge port and its preparation and plugging method
  • A molding runner with a wax discharge port and its preparation and plugging method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A molding sprue with a wax drain, such as figure 1 As shown, it is a near-rectangular wax pipe with openings at both ends, consisting of left section 1, middle section 2 and right section 3; right section 3 is the cavity of the wax pipe, with a size of 35mm×25mm×10mm; middle section 2 is one end The thicker end is thin and the quadrangular truss-shaped wax pipe cavity, the thinner end is connected with the right section, the thicker end is connected with the left section, the middle section 2 is 30mm long, the size of the thick end is 50mm×30mm, and the size of the thin end is 35mm× 25mm; the left section 1 is a wax pipe cavity with a boss 4 on the side wall, the upper surface of the boss 4 is the unopened wax discharge port 5, the size of the left section is 50mm×40mm×40mm, and the molding runner is located in the left section The opening of 1 closes the edge in the radial direction of the pipeline, and the size of the formed opening is 35mm×25mm, which is the same as ...

Embodiment 2

[0033] The above-mentioned preparation method of the molding runner containing the wax discharge port, the steps are as follows:

[0034] 1) Heat the mold of the forming runner to 25°C; heat and melt the wax material into a fluid state, and maintain the temperature of the wax material at 72°C, and then use a manual wax press machine to inject the wax material into the mold at a pressure of 0.8MPa Medium, and keep warm for 30s;

[0035] 2) After the heat preservation is completed, open the mold and take it out to obtain the molding runner.

Embodiment 3

[0037] The above-mentioned preparation method of the molding runner containing the wax discharge port, the steps are as follows:

[0038] 1) Heat the mold for forming the sprue to 33°C; heat and melt the wax material into a fluid state, and maintain the temperature of the wax material at 69°C, and then use a high-pressure wax press machine to inject the wax material into the mold at a pressure of 1.2MPa Medium, and keep warm for 23s;

[0039] 2) After the heat preservation is completed, open the mold and take it out to obtain the molding runner.

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Abstract

The invention aims at solving the problems existing in blockage of a dewaxing opening in the prior art, provides a forming pouring gate with a dewaxing opening and a preparing and blocking method of the forming pouring gate, and belongs to the field of large thin-wall casting investment castings. The forming pouring gate is a wax pipeline with openings in the two ends and is composed of a left section, a middle section and a right section. The right section is a wax pipeline cavity. The middle section is a wax pipeline cavity with a thick end and a thin end, the thin end is connected with the right section, and the thick end is connected with the left section. The left section is a wax pipeline cavity with a boss on the side wall, and the dewaxing opening not opened is formed in the upper surface of the boss. The production consistency of the forming pouring gate is good, and the production process can be conveniently controlled. Meanwhile, the dewaxing opening is blocked through a special ceramic stop block, appropriate coatings are matched, the pheromone of leakage of molten steel during casting can be prevented, the feeding effect is guaranteed, and metallurgical defects such as hole shrinkage, loosening and blending can be reduced.

Description

technical field [0001] The invention belongs to the field of investment casting of large thin-walled castings, and in particular relates to a forming runner with a wax discharge port of a large pouring system and a preparation and sealing method thereof. Background technique [0002] Large and complex thin-walled parts are one of the important parts of aero-engines. Generally, they are formed by high-temperature alloy investment casting method, which is extremely difficult to cast. Because the pouring system is very complicated, it is difficult to melt the wax pattern, and the shell after dewaxing is prone to have wax residues. To ensure complete dewaxing, it is necessary to open a wax discharge port at the bottom of the shell. The wax port is sealed. The current method of making the wax discharge port is to manually paste wax blocks when the pouring system is combined. The shapes and sizes of the wax blocks are different, and the production consistency is poor. In the plu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/08
CPCB22C9/082
Inventor 杨威王宇飞王明豪孙宝才李波
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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