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Casting method for shell mold made by 3D printing

A 3D printing and shell mold technology, used in manufacturing tools, casting equipment, molds, etc., can solve the problems of sintering, sand cleaning process pollution, complex shell mold production, low production efficiency, etc., to facilitate modification and improve accuracy. , the effect of improving production efficiency

Active Publication Date: 2018-03-06
LIANYUNGANG YYU PROD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] It can be seen from the above that the current dewaxing casting process is very complicated, and will produce pollution in the sintering and sand cleaning process
At the same time, the production of shell molds is also very complicated, which directly leads to low production efficiency

Method used

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  • Casting method for shell mold made by 3D printing

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0025] Method of the present invention comprises the following steps:

[0026] First, computer-generated drawings are made according to the products to be processed. Generally, drawing software that can output to 3D printing is used.

[0027] Second, input the drawn drawings into the 3D printer for 3D printing of the shell mould. The 3D printing of the present invention is different from the traditional 3D printing in that it does not use hot-melt materials to print and solidify directly. The printing material used in the present invention is a liquid mixture of photosensitive resin and ceramic powder. The printing method is the same as the existing method, still using the layer-by-layer printing method of layered "slicing", and the thickness of each layer is 25-100 microns. After each layer is printed, it needs to be irradiated with ultraviolet...

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Abstract

The invention relates to the technical field of lost-wax casting technology, in particular to a casting method using 3D printing shell molds. The casting method of the 3D printing shell mold includes the following steps. First, draw the drawings by computer according to the products to be processed; second, input the drawn drawings into the 3D printer for 3D printing of the shell mold; Carry out sintering treatment to sinter and solidify the printed shell mold; fourthly, the shell mold after sintering is used as a casting cavity, and molten raw materials are injected into the shell mold to shape it, and finally the entire shell mold is taken out and the shell is broken The molded product can be taken out of the mold; fifthly, the finished product is obtained after post-processing the molded product; the printing material used in the above-mentioned 3D printing is mixed with a liquid mixture of photosensitive resin and ceramic powder. After adopting the above technical scheme in the present invention, the shell mold is directly printed by a 3D printer, thus eliminating the shell mold manufacturing process in the traditional process and improving production efficiency.

Description

Technical field: [0001] The invention relates to the technical field of lost-wax casting technology, in particular to a casting method using 3D printing shell molds. Background technique: [0002] Lost wax casting is a kind of precision casting, and its production process is as follows: [0003] First, draw drawings according to the products to be processed, and make corresponding molds according to the drawings. [0004] Second, use the mould, adopt the way of injection molding to make a wax model, and correct the wax model. [0005] Thirdly, a number of wax patterns are assembled to form a wax tree to achieve the purpose of casting multiple products at one time and improve work efficiency. [0006] Fourth, soak the wax tree in slurry so that a layer of slurry is attached to the surface of the wax tree. After the slurry dries, it is soaked again several times. In order to ensure the thickness of the shell mold soaked in slurry, it is usually necessary to repeat 5-6 times ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/04
Inventor 吴政宽
Owner LIANYUNGANG YYU PROD
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