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Precision casting modulated wax

A technology of precision casting and microcrystalline wax, which is applied in the direction of casting molding equipment, etc., can solve the problems of unfixed demoulding time, affecting the quality of castings, and low quality of mold materials, and achieve low linear shrinkage and subsidence rates, and stable product dimensions Strong resistance and good surface finish

Inactive Publication Date: 2020-02-21
襄阳市立强机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used molding materials are two or three kinds of paraffin wax, stearic acid and rosin, which have good plasticity and filling properties, but this kind of molding materials has poor thermal stability, low strength, high ash content, and slow demoulding time. Fixed, a large number of waste products are produced, the quality of the mold material is low, the cost is high, and it seriously affects the improvement of the quality of the castings. The castings produced are less competitive in the international market and cannot meet the requirements of the precision casting industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of wax prepared by precision casting, which includes the following raw materials in parts by mass: 44 parts of microcrystalline wax, 2.5 parts of candelilla wax, 34 parts of carnauba wax, 3.5 parts of ethylene-vinyl acetate copolymer, 12 parts of pure monomer resin .

[0019] Adopt the following steps to prepare the investment casting modulation wax:

[0020] (1) Divide the carnauba wax into two parts, heat one part at 120°C, keep stirring until melting, then add another part of carnauba wax, continue heating, keep stirring until melting, and obtain molten carnauba wax A;

[0021] (2) Continue heating the molten carnauba wax A obtained in step (1) at 100° C. for 1 minute, add candelilla wax, and keep stirring until completely melted to obtain mixture B;

[0022] (3) Continue heating the mixture B obtained in step (2) at 110° C. for 1 minute, add ethylene-vinyl acetate copolymer, and keep stirring until completely melted to obtain mixture C;

[0023] (4) Contin...

Embodiment 2

[0028] A precision casting modulation wax, which includes the following raw materials in parts by mass: 46 parts of microcrystalline wax, 3.5 parts of candelilla wax, 36 parts of carnauba wax, 4.5 parts of ethylene-vinyl acetate copolymer, and 14 parts of pure monomer resin .

[0029] Adopt the following steps to prepare the investment casting modulation wax:

[0030] (1) Divide the carnauba wax into two parts, heat one part at 120°C, keep stirring until melting, then add another part of carnauba wax, continue heating, keep stirring until melting, and obtain molten carnauba wax A;

[0031] (2) Continue heating the molten carnauba wax A obtained in step (1) at 120° C. for 2 minutes, add candelilla wax, and keep stirring until completely melted to obtain mixture B;

[0032] (3) Continue heating the mixture B obtained in step (2) at 120° C. for 2 minutes, add ethylene-vinyl acetate copolymer, and keep stirring until completely melted to obtain mixture C;

[0033] (4) Continue ...

Embodiment 3

[0038] A kind of wax prepared by precision casting, which includes the following raw materials in parts by mass: 45 parts of microcrystalline wax, 3 parts of candelilla wax, 35 parts of carnauba wax, 4 parts of ethylene-vinyl acetate copolymer, 13 parts of pure monomer resin .

[0039] Adopt the following steps to prepare the investment casting modulation wax:

[0040] (1) Divide the carnauba wax into two parts, heat one part at 120°C, keep stirring until melting, then add another part of carnauba wax, continue heating, keep stirring until melting, and obtain molten carnauba wax A;

[0041] (2) Continue heating the molten carnauba wax A obtained in step (1) at 110° C. for 1.5 minutes, add candelilla wax, and keep stirring until completely melted to obtain mixture B;

[0042] (3) Continue heating the mixture B obtained in step (2) at 115° C. for 1.5 minutes, add ethylene-vinyl acetate copolymer, and keep stirring until completely melted to obtain mixture C;

[0043] (4) Cont...

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Abstract

The invention belongs to the technical field of precision casting, and particularly relates to a precision casting modulated wax. The precision casting modulated wax comprises the following raw materials of, in parts by mass, 44 to 46 parts of microcrystalline wax, 2.5 to 3.5 parts of candelilla wax, 34 to 36 parts of carnauba wax, 3.5 to 4.5 parts of ethylene-vinyl acetate copolymer, and 12 to 14parts of pure monomer resin. The modulated wax is applied to the precision casting industry, and has the characteristics of strong stability, high strength and difficulty in deformation, low gray scale and reduced pollution to metal casting, easy demolding and easy to melt and flow out of a shell with a wax mold when demoulding, and being capable of effectively improving the production efficiencyin the precision casting process.

Description

technical field [0001] The invention belongs to the technical field of precision casting, and in particular relates to a modulation wax for precision casting. Background technique [0002] With the development of society, precision castings have been widely used in aviation, weapons and other industrial sectors, especially electronics, petroleum, chemical, transportation, light industry, textile, pharmaceutical, medical equipment, pump and valve components. [0003] At present, the commonly used molding materials are two or three kinds of paraffin wax, stearic acid and rosin, which have good plasticity and filling properties, but this kind of molding materials has poor thermal stability, low strength, high ash content, and slow demoulding time. Fixed, a large number of waste products are produced, the quality of the mold material is low, the cost is high, and it seriously affects the improvement of the quality of the castings. The castings produced are less competitive in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C7/02C08L91/06C08L23/08
CPCB22C7/02C08L91/06C08L2205/025C08L2205/035C08L23/0853
Inventor 陈涛卢发昌王信伟夏荣军
Owner 襄阳市立强机械有限公司
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