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Precision casting medium temperature modulation wax and preparation method thereof

A technology of precision casting and medium temperature, which is applied in the direction of casting molding equipment, casting molds, manufacturing tools, etc. It can solve the problems of hard-to-melt and outflow mold shells, easy deformation of wax molds, and resistance to grinding, so as to achieve good surface finish and improve the quality of castings , the effect of low ash content

Active Publication Date: 2015-09-09
青岛新诺科新材料科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wax mold making is a key link in the precision casting process. The quality of the wax mold will directly affect the quality of the casting. However, the modulation wax currently used has the following defects: (1) the ash content is high after burning; (2) the wax mold made is easy to Deformation, not resistant to grinding; (3) It is not easy to melt and flow out of the shell with the wax mold when demolding

Method used

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  • Precision casting medium temperature modulation wax and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] A medium-temperature modulated wax for precision casting, comprising the following raw materials in parts by mass: 42 parts of microcrystalline wax, 3 parts of polyethylene wax, 34 parts of rosin resin, 2 parts of ethylene-vinyl acetate copolymer, and 13 parts of pure monomer resin.

[0030] The preparation method of the medium temperature modulation wax in the investment casting is as follows:

[0031] (1) Add 17 parts of rosin resin to the reaction kettle and heat and stir for 1 hour. After complete melting, add the remaining 17 parts of rosin resin and continue heating and stirring for 1 hour. The heating temperature is 120°C, the stirring speed is 30r / min, and the stirring time is 2 hours. , to obtain completely molten rosin resin;

[0032] (2) Add 3 parts of polyethylene wax to the molten rosin resin obtained in step (1) and heat and stir, the heating temperature is 100°C, the stirring speed is 30r / min, and the stirring time is 50min, so that the polyethylene wax i...

Embodiment 2

[0039] A medium-temperature modulated wax for precision casting, comprising the following raw materials in parts by mass: 43 parts of microcrystalline wax, 4 parts of polyethylene wax, 35 parts of rosin resin, 3 parts of ethylene-vinyl acetate copolymer, and 15 parts of pure monomer resin.

[0040] The preparation method of the medium temperature modulation wax in the investment casting is as follows:

[0041] (1) Add 17.5 parts of rosin resin to the reaction kettle and heat and stir for 1 hour, then add the remaining 17.5 parts of rosin resin and continue heating and stirring for 1 hour after it is completely melted. The heating temperature is 120°C, the stirring speed is 30r / min, and the stirring time is 2 hours. , to obtain completely molten rosin resin;

[0042] (2) Add 4 parts of polyethylene wax to the molten rosin resin obtained in step (1) and heat and stir, the heating temperature is 110°C, the stirring speed is 35r / min, and the stirring time is 40min, so that the pol...

Embodiment 3

[0050] A medium-temperature modulated wax for precision casting, comprising the following raw materials in parts by mass: 44 parts of microcrystalline wax, 5 parts of polyethylene wax, 36 parts of rosin resin, 4 parts of ethylene-vinyl acetate copolymer, and 17 parts of pure monomer resin. The preparation method of the medium temperature modulation wax in the investment casting is as follows:

[0051] (1) Add 18 parts of rosin resin to the reaction kettle and heat and stir for 1 hour, then add the remaining 18 parts of rosin resin and continue heating and stirring for 1 hour after it is completely melted. The heating temperature is 120°C, the stirring speed is 30r / min, and the stirring time is 2 hours , to obtain completely molten rosin resin;

[0052] (2) Add 5 parts of polyethylene wax to the molten rosin resin obtained in step (1) and heat and stir, the heating temperature is 120°C, the stirring speed is 40r / min, and the stirring time is 30min, so that the polyethylene wax is...

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Abstract

The invention discloses precision casting medium temperature modulation wax and a preparation method thereof. The precision casting medium temperature modulation wax comprises the following raw materials in parts by mass: 42-44 parts of microcrystalline wax, 3-5 parts of polyethylene wax, 34-36 parts of rosin resin, 2-4 parts of an ethylene-vinyl acetate copolymer, and 13-17 parts of pure monomer resin. The precision casting medium temperature modulation wax can be used for the precision casting industry, is favorable in size stability, low in linear shrinkage and subsidence rate, high in strength, not deformed during the processes of contacting, equipping and polishing, and low in ash content, and favorable in surface smoothness, and has no pollution to metal, so that the casting quality is improved; the precision casting medium temperature modulation wax is easy to demold, melted easily along with a wax mold to flow out of a shell in demolding, relatively strong in adaptability, and relatively good in use effect.

Description

technical field [0001] The invention relates to the precision casting industry, in particular to medium-temperature modulated wax for precision casting and a preparation method thereof. Background technique [0002] With the development of society, precision castings have been widely used in all industrial sectors such as aviation and weapons, especially electronics, petroleum, chemical industry, transportation, light industry, textile, pharmaceutical, medical equipment, pump and valve components. Investment precision casting is a casting process with little or no cutting. The castings produced have high dimensional accuracy, low surface roughness, high flexibility and strong adaptability, especially for parts with complex shapes. The superiority is more obvious. [0003] The investment casting process includes: firstly making a wax mold by using wax-based material, then coating the wax mold with refractory material, and then extracting the wax mold to form a casting cavity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06C08L23/06C08L93/04C08L23/08B22C7/02
CPCB22C1/00B22C7/02
Inventor 邵斌
Owner 青岛新诺科新材料科技发展有限公司