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Filling type investment casting pattern material with high filler content and preparation method of filling type investment casting pattern material

An investment casting and filler technology, applied in casting and molding equipment and other directions, can solve problems such as filler content not exceeding 30%, mold material not meeting the requirements, reducing linear shrinkage, etc., to achieve good fluidity, moderate viscosity, line Small shrinkage effect

Inactive Publication Date: 2021-06-08
苏州泰尔航空材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For thick and complex large-scale structural parts in the aerospace field that require higher dimensional accuracy, the existing mold materials still cannot meet the requirements. Currently, the filler content of filled mold products on the market does not exceed 30%.
In order to reduce the linear shrinkage, the content of solid filler can be increased, but it will cause the fluidity and process performance of the molding material to deteriorate at the process temperature

Method used

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  • Filling type investment casting pattern material with high filler content and preparation method of filling type investment casting pattern material
  • Filling type investment casting pattern material with high filler content and preparation method of filling type investment casting pattern material

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A filled investment casting mold material with high filler content, which contains the following raw materials in parts by weight: 30 parts of 62# fully refined paraffin wax, 30 parts of C5 hydrogenated petroleum resin, 5 parts of beeswax, 4 parts of ethylene-vinyl acetate Parts, 30 parts of α-methyl styrene powder, 1 part of polyethylene glycol stearate.

[0032] The preparation method of the above-mentioned filled investment casting mold material with high filler content comprises the following steps:

[0033] (1), heating and stirring the 62# fully refined paraffin wax, C5 hydrogenated petroleum resin, and beeswax at a temperature of 100°C-120°C to form a uniform and transparent liquid mixture A;

[0034] (2) Add the above-mentioned liquid mixture A with the ethylene-vinyl acetate in the weight fraction, control the temperature: 120°C-130°C, keep stirring until it melts into a uniform and transparent liquid mixture B, and use a 200-mesh filter filter;

[0035] (3) ...

Embodiment 2

[0037] A filling type investment casting mold material with high filler content, which contains the following raw materials in parts by weight: 15 parts of 64# fully refined paraffin wax, 15 parts of 80# microcrystalline wax, 20 parts of terpene resin T-100, small 6 parts of candelabra wax, 1 part of APAO, 40 parts of cyclohexamethylenetetramine, 3 parts of monoglyceride stearate.

[0038] The preparation method of the above-mentioned filled investment casting mold material with high filler content comprises the following steps:

[0039] (1) 64# fully refined paraffin wax, 80# microcrystalline wax, terpene resin, and candelilla wax are heated and stirred at a temperature of 100°C-120°C to melt into a uniform and transparent liquid mixture A;

[0040] (2) Add the above-mentioned liquid mixture A into the APAO by weight fraction, control the temperature: 120°C-130°C, stir continuously until it melts into a uniform and transparent liquid mixture B, and filter it with a 200-mesh f...

Embodiment 3

[0043]A filled investment casting mold material with high filler content, which contains the following raw materials in parts by weight: 13.5 parts of 60# fully refined paraffin wax, 10 parts of 85# microcrystalline wax, 15 parts of C5 / C9 copolymerized petroleum resin, Brazil 8 parts of palm wax, 0.5 parts of ethylene-acrylic acid copolymer, 45 parts of cellulose acetate powder, and 8 parts of polyoxyethylene sorbitan fatty acid ester.

[0044] The preparation method of the above-mentioned filled investment casting mold material with high filler content comprises the following steps:

[0045] (1), 60# fully refined paraffin wax, 85# microcrystalline wax, C5 / C9 copolymerized petroleum resin, and carnauba wax are heated and stirred at a temperature of 100°C-120°C to melt into a uniform and transparent liquid mixture A ;

[0046] (2) Add the ethylene-acrylic acid copolymer in the above-mentioned liquid mixture A, control the temperature: 120°C-130°C, stir continuously until it m...

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Abstract

The invention provides a filling type investment casting pattern material with high filler content. The filling type investment casting pattern material comprises the following components in percentage by weight: 20%-50% of petroleum wax, 10%-40% of tackifying resin, 5%-10% of vegetable wax, 0%-5% of a high-molecular polymer, 30%-50% of a solid filler and 0%-8% of a dispersing agent. The prepared investment casting pattern material is high in solid filler content, small in linear shrinkage rate, high in size precision and good in processing property.

Description

technical field [0001] The invention relates to the technical field of melting and casting materials, in particular to a filling type investment casting mold material with high filler content and a preparation method thereof. Background technique [0002] Investment casting, also known as lost wax precision casting, is to use fusible molds to make investment samples and form modules, and then coat multiple layers of refractory materials on the surface of the modules. It is heated and melted from the shell, and the shell is roasted at high temperature and then poured into molten metal to obtain investment castings. [0003] The first process of investment casting production is to press the fusible mold. The investment mold is a model used to form the cavity in the refractory shell. To obtain castings with high dimensional accuracy and surface finish, the investment casting mold material itself should have high Therefore, investment casting mold material is an important mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06C08L57/02C08L23/08C08L71/02C08L45/00C08L93/04C08L23/12C08K5/01C08K5/3477C08K5/103C08K5/092B22C7/02
CPCC08L91/06C08L57/02C08L45/00C08L93/04B22C7/02C08L2205/035C08L2205/025C08L23/0853C08L71/02C08K5/01C08K5/103C08K5/3477C08L23/0869C08L1/12C08L23/12C08K5/092
Inventor 宋珊珊李毅赵成哲孙月强
Owner 苏州泰尔航空材料有限公司
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