Filled low-temperature modulation wax for precision casting and preparation method thereof

A technology of precision casting and filling type, which is used in casting molding equipment, casting molds, cores, etc., can solve the problems of inability to meet precision casting, unfixed demolding time, poor thermal stability of mold materials, etc., and shorten demolding time. , low grayscale, the effect of reducing shrinkage

Inactive Publication Date: 2015-05-13
青岛新诺科铸造材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 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 amount of waste products are generated, which cannot meet the requirements of the precision casting industry

Method used

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  • Filled low-temperature modulation wax for precision casting and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A filling-type precision casting low-temperature modulated wax, comprising the following components in parts by weight: 31-33 parts of microcrystalline wax, 1.5-2.5 parts of polyethylene wax, 27-29 parts of rosin resin, and ethylene-vinyl acetate copolymer 3-5 parts, 4-6 parts of α-olefin polymer, 0.8-1.2 parts of stearic acid, 25-30 parts of filler. The preparation method that above-mentioned modulation wax adopts comprises the following steps:

[0030] (1) Heat half of the rosin resin and stir continuously until it is completely melted, then add the other half of the rosin resin, stir until the rosin resin is completely melted, and the heating temperature is 120°C to obtain molten rosin resin, melt the rosin resin separately, and shorten the melting time , to reduce the difficulty of melting;

[0031] (2) After continuing to heat the molten rosin resin obtained in step (1) for 1-2 minutes, add ethylene-vinyl acetate copolymer, heat and stir until the ethylene-vinyl a...

Embodiment 2

[0040] A filling type precision casting low-temperature modulated wax, comprising the following components in parts by weight: 31 parts of microcrystalline wax, 1.5 parts of polyethylene wax, 27 parts of rosin resin, 3 parts of ethylene-vinyl acetate copolymer, α-olefin 4 parts of polymer, 0.8 part of stearic acid, 25 parts of filler. The preparation method that above-mentioned modulation wax adopts comprises the following steps:

[0041] (1) Heat half of the rosin resin and stir continuously until it is completely melted, then add the other half of the rosin resin, stir until the rosin resin is completely melted, and the heating temperature is 120°C to obtain molten rosin resin, melt the rosin resin separately, and shorten the melting time , to reduce the difficulty of melting;

[0042] (2) After continuing to heat the molten rosin resin obtained in step (1) for 1-2 minutes, add ethylene-vinyl acetate copolymer, heat and stir until the ethylene-vinyl acetate copolymer is com...

Embodiment 3

[0051] A filling-type precision casting low-temperature modulated wax, comprising the following components in parts by weight: 32 parts of microcrystalline wax, 2 parts of polyethylene wax, 28 parts of rosin resin, 4 parts of ethylene-vinyl acetate copolymer, α-olefin 5 parts of polymer, 1 part of stearic acid, 28 parts of filler. The preparation method that above-mentioned modulation wax adopts comprises the following steps:

[0052] (1) Heat half of the rosin resin and stir continuously until it is completely melted, then add the other half of the rosin resin, stir until the rosin resin is completely melted, and the heating temperature is 120°C to obtain molten rosin resin, melt the rosin resin separately, and shorten the melting time , to reduce the difficulty of melting;

[0053] (2) After continuing to heat the molten rosin resin obtained in step (1) for 1-2 minutes, add ethylene-vinyl acetate copolymer, heat and stir until the ethylene-vinyl acetate copolymer is complet...

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Abstract

The invention discloses filled low-temperature modulation wax for precision casting and a preparation method thereof. The wax comprises components in parts by weight as follows: 31-33 parts of microcrystalline wax, 1.5-2.5 parts of polyethylene wax, 27-29 parts of rosin resin, 3-5 parts of an ethylene-vinyl acetate copolymer, 4-6 parts of an alpha-olefin polymer, 0.8-1.2 parts of stearic acid and 25-30 parts of filler. The modulation wax prepared with the formula and the preparation method can have the advantages of high size stability, high strength, low gray level and easiness in demolding and can be applied to production of supreme precision castings.

Description

technical field [0001] The invention relates to the technical field of precision casting wax and its preparation method, in particular to a filling-type precision casting low-temperature modulated wax and its preparation method. Background technique [0002] Precision casting is a special casting method relative to the traditional casting process. It can obtain relatively accurate shape and high casting precision. The more common method is: first design and manufacture the mold according to the product requirements (with a very small or no allowance), cast wax by casting method to obtain the original wax pattern; repeat coating and sanding on the wax pattern Process, hardening the shell and drying; then melting the inner wax pattern to obtain the cavity. Investment casting is a very important casting process in the precision casting industry. This process has the advantages of high precision, smooth surface, and is not limited by the shape and complexity of the product. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06C08L25/06C08L93/04C08L23/06C08L23/08C08L23/00C08K5/09B22C7/02B22C9/04
Inventor 邵斌
Owner 青岛新诺科铸造材料科技有限公司
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