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A conformal cooling channel with hydrophobic effect and its manufacturing method

A technology of conformal cooling and hydrophobic effect, which is applied in the field of mold manufacturing, can solve the problems of easy corrosion of surface metal, easy blockage of conformal cooling channels, and low cooling efficiency of the mold cooling system, so as to avoid blockage of cooling channels and avoid metal The effect of corrosion

Active Publication Date: 2019-07-09
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the object of the present invention is to provide a conformal cooling channel with hydrophobic effect and its manufacturing method, wherein the key conformal cooling channel inner wall coating material type, And the forming process of corresponding metal materials and non-metallic materials (including the setting of the overall process flow, the specific types of each forming process, the parameter conditions adopted by each forming process, etc.) can be improved and optimized, and the coating with hydrophobic effect can be prepared. The conformal cooling channel effectively utilizes the self-cleaning and drag-reducing effects of the conformal cooling channel to solve technical problems such as low cooling efficiency of the mold cooling system, easy blockage of the conformal cooling channel, and easy corrosion of surface metals; and, the present invention Through the combination of SLM and SLS, a composite forming method is obtained. Using this composite method, the hydrophobic coating and the mold metal itself have a good adhesion effect, which can ensure that the prepared conformal cooling channel with a hydrophobic coating can withstand cooling. The erosion of the medium has good stability and service life

Method used

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  • A conformal cooling channel with hydrophobic effect and its manufacturing method
  • A conformal cooling channel with hydrophobic effect and its manufacturing method
  • A conformal cooling channel with hydrophobic effect and its manufacturing method

Examples

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Embodiment 1

[0035] This embodiment comprises the following steps:

[0036] (1) the monodisperse positively charged polymethyl propylene methyl ester (PMMA) microsphere of 20 microns is prepared by dispersion polymerization method, adds water and dilutes to solid content 10%, adds 5% particle diameter again and is 50 Nano-siloxane modified silica sol (SiO 2 ), stirred at 80°C for 20 hours to obtain PMMA / SiO 2 Complex emulsion. Take 5g of polycarbonate plastic flow enhancer, 5g of acrylate adhesive, 0.2g of dispersant and PMMA / SiO2 composite emulsion and mix thoroughly, stir at room temperature for 2 hours, then separate, wash, and bake the product in an oven at 70°C After drying for 100 hours, the hydrophobic PMMA / SiO2 micro-nano structure composite powder can be obtained;

[0037] (2) Use 3D design software to design such as figure 2 The 3D model of the conformal cooling channel in , where 1 is the mold metal, 2 is the hydrophobic coating, and 3 is the conformal cooling channel. Imp...

Embodiment 2

[0043] This embodiment comprises the following steps:

[0044] (1) the monodisperse positively charged polymethyl propylene methyl ester (PMMA) microsphere of 20 microns is prepared by dispersion polymerization method, adds water and dilutes to solid content 10%, adds 5% particle diameter again and is 50 Nano-siloxane modified silica sol (SiO 2 ), stirred at 80°C for 15 hours to obtain PMMA / SiO 2 Complex emulsion. Take 5g of polycarbonate plastic flow enhancer, 5g of acrylate adhesive, 0.2g of dispersant and PMMA / SiO2 composite emulsion and mix thoroughly, stir at room temperature for 2 hours, separate, wash, and dry the product in an oven at 70°C 80 hours. Hydrophobic PMMA / SiO can be obtained 2 Micro-nano structure composite powder;

[0045] (2) Use 3D design software to design such as figure 2 The 3D model of the conformal cooling channel in , where 1 is the mold metal, 2 is the hydrophobic coating, and 3 is the conformal cooling channel. Import the 3D model into the...

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Abstract

The invention discloses a conformal cooling channel with hydrophobic effect and a manufacturing method thereof, wherein the method comprises the following steps: (1) preparing a hydrophobic coating powder material; (2) designing a three-dimensional cooling channel mold with a conformal cooling channel (3) place the mold metal powder and hydrophobic coating powder; (4) carry out the forming process, specifically, first use the SLM process to form the mold metal powder, and then use the SLS process to form the hydrophobic coating powder , forming a powder layer; (5) repeating step (4) until the entire conformal cooling channel is completed; (6) removing the formed mold. The present invention improves and optimizes the material type of the key inner wall hydrophobic coating and the corresponding specific forming process, and can prepare a conformal cooling channel with a hydrophobic coating, so as to solve the problems of low cooling efficiency and conformal cooling flow of the mold cooling system. The road is easy to block and the surface metal is easy to corrode and other technical problems.

Description

technical field [0001] The invention belongs to the field of mold manufacturing, and more specifically relates to a conformal cooling channel with hydrophobic effect and a manufacturing method thereof. Background technique [0002] Mold is an important equipment in modern manufacturing industry. Mold industry is an important basic industry in the national economy. The level of mold design and manufacturing is an important symbol to measure a country's comprehensive manufacturing capacity. It determines the quality, efficiency and new product quality of products. research and development capabilities. The cooling system of the mold is its core part, which determines the life of the mold, product production efficiency and quality. The conformal cooling channel refers to the cooling channel whose shape changes with the change of the mold cavity. Compared with the traditional cooling channel, the conformal cooling channel can not only improve the cooling efficiency and reduce t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F7/02B22F5/10B33Y10/00B29C64/153B29C64/268
CPCB22F5/10B22F7/02B29C64/153B29C64/268B33Y10/00B22F10/00B22F10/34B22F10/36B22F10/28B22F12/41B22F10/362B22F10/368B22F10/68B22F10/80Y02P10/25
Inventor 文世峰王冲季宪泰周燕魏青松胡辉陈志平叶福源
Owner HUAZHONG UNIV OF SCI & TECH
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