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Casting wax and preparation method thereof

A casting wax and Fischer-Tropsch wax technology, applied in the field of precision casting mold materials, can solve the problems of rare research on the thermal stability of casting wax, few types of precision casting wax, and dependence on imports, etc., to achieve excellent thermal stability and product competitiveness Strong, excellent flexural strength effect

Pending Publication Date: 2022-06-24
SHANGHAI TONGS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are abundant sources of casting wax in my country, but the types of precision casting wax currently developed are few, low in output, and poor in quality, which is difficult to meet the development needs of the precision casting industry, and most of them still rely on imports
[0005] In addition, the preparation of investment casting wax in the prior art mainly improves its strength, hardness, viscosity, ash content, etc., so that its mechanical properties and process properties meet the requirements of practical applications. However, for improving the thermal stability of casting wax Research is still relatively rare

Method used

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Examples

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preparation example Construction

[0040] Another aspect of the present invention provides a preparation method of casting wax, comprising the following steps:

[0041] (1) be added to the high-speed crushing atomizer according to the proportion to be crushed to obtain each micronized raw material;

[0042] (2) Put the micronized raw materials into a high-speed mixer and mix evenly to obtain a powdered casting wax product.

[0043] In some preferred embodiments, the crushing condition of the step (1) is air atomization crushing, and the minimum particle size of the micronized raw material is 2-3 μm.

[0044] In some preferred embodiments, the stirring speed of the step (2) is 450-600 r / min, and the stirring time is 25-40 min.

[0045] Preferably, the stirring speed of the step (2) is 450-550 r / min, and the stirring time is 25-35 min.

[0046] More preferably, the stirring speed of the step (2) is 500r / min, and the stirring time is 30min.

[0047] The comprehensive performance of the casting wax prepared by t...

Embodiment 1

[0051] Embodiment 1 on the one hand provides a kind of casting wax, in parts by weight, including the raw materials of the following components: 35 parts of Fischer-Tropsch wax K65, 40 parts of Fischer-Tropsch wax K70, 20 parts of microcrystalline wax, 2 parts of modified rosin, 3 parts of PE oligomer.

[0052] The Fischer-Tropsch wax K65 and the Fischer-Tropsch wax K70 are coal-based Fischer-Tropsch wax produced by Shanghai Tongshi Technology Co., Ltd., and the microcrystalline wax is purchased from Jingmen Weijia Industrial Co., Ltd., and the trade name is No. 75 microcrystalline wax. The modified rosin was purchased from Guangdong Kemaolin Chemical Industry Co., Ltd., the model is KMDS 115, the softening point is 107-115 ° C, the acid value is 130-160 mg KOH / g, and the PE oligomer is selected from Shanghai Tongshi Technology Ltd., model PE-36.

[0053] Another aspect of embodiment 1 provides a preparation method of casting wax, comprising the following steps:

[0054] (1)...

Embodiment 2

[0057] Embodiment 2 On the one hand, a casting wax is provided, which, in parts by weight, comprises the raw materials of the following components: 34 parts of Fischer-Tropsch wax K65, 42 parts of Fischer-Tropsch wax K70, 22 parts of microcrystalline wax, 2.5 parts of modified rosin, 2.5 parts of PE oligomers.

[0058] The Fischer-Tropsch wax K65 and the Fischer-Tropsch wax K70 are coal-based Fischer-Tropsch wax produced by Shanghai Tongshi Technology Co., Ltd., and the microcrystalline wax is purchased from Jingmen Weijia Industrial Co., Ltd., and the trade name is No. 75 microcrystalline wax. The modified rosin was purchased from Guangdong Kemaolin Chemical Industry Co., Ltd., the model is KMDS 115, the softening point is 107-115 ° C, the acid value is 130-160 mg KOH / g, and the PE oligomer is selected from Shanghai Tongshi Technology Ltd., model PE-36.

[0059] Another aspect of embodiment 2 provides a preparation method of casting wax, comprising the following steps:

[0...

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Abstract

The invention provides casting wax and a preparation method thereof, and the casting wax comprises the following raw materials in parts by weight: 70-80 parts of methylene polymer, 15-25 parts of microcrystalline wax, 1.5-5 parts of modified rosin and 1-5 parts of PE oligomer. Through specific compounding of all the raw materials, the prepared casting wax has excellent bending strength, surface hardness and viscosity, small linear shrinkage and ash content and excellent heat stability, the mechanical property, the processing property and the heat stability of the casting wax all meet the requirements, related indexes of the casting wax are close to those of foreign imported products, and the casting wax is suitable for medium-temperature precision casting products and has wide application prospects. In addition, the coating has better coating property, flowability and reusability, and the product competitiveness is strong.

Description

technical field [0001] The invention relates to the field of precision casting mould materials, in particular to a casting wax and a preparation method thereof. Background technique [0002] Investment casting is an advanced manufacturing process with little or no cutting. It is widely used in military, aerospace, hardware components and other fields. It can greatly improve the accuracy of castings, reduce the loss of raw materials, and can produce larger and more complex components. [0003] Casting wax is the core raw material of the investment casting process, and its shrinkage rate, crystallization cooling time, wettability, and surface cleanliness are the key factors that determine the accuracy of castings. With the increasing demand for high-quality precision castings, the requirements for casting wax are also getting higher and higher. The requirements for precision casting wax are mainly reflected in three aspects, including mechanical properties, thermal stability p...

Claims

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Application Information

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IPC IPC(8): C08L91/06C08L93/04C08L23/06B22C7/02
CPCC08L91/06B22C7/02C08L2205/035C08L2205/025C08L2201/08C08L93/04C08L23/06
Inventor 潘玉东
Owner SHANGHAI TONGS SCI & TECH
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