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Rapid manufacturing method of enhancement type conformal cooling die copper

A technology of conformal cooling and manufacturing method, which is applied in the field of rapid manufacturing of enhanced conformal cooling mold copper, can solve the problems of low material utilization rate, reduced enhancement effect, uneven distribution of ceramic phases, etc., and achieve improved laser absorption rate, Good dispersion strengthening effect, saving manufacturing cost

Active Publication Date: 2018-06-19
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, further studies have shown that the above existing copper-based alloy reinforcement methods still have the following deficiencies or defects: First, in the actual process of smelting or smelting treatment, not only the material utilization rate is low, but also there are microstructure and composition segregation, etc. Problems, especially the distribution of ceramic phases are often not uniform, which will significantly reduce the reinforcement effect; secondly, in the existing schemes, the research on the mechanism of action of ceramics relative to copper is still insufficient, and there are complex processing techniques, low efficiency and the obtained Composite materials need to be improved in terms of stiffness, hardness and wear resistance

Method used

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  • Rapid manufacturing method of enhancement type conformal cooling die copper

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] First, establish a three-dimensional model of the mold, and then process the model into layered slices and import it into the 3D printing device.

[0039] Next, weigh 2.0 Kg of pure copper powder, wherein the pure copper powder is spherical or nearly spherical, the powder particle size distribution is between 15 μm and 50 μm, and the oxygen content is lower than 1000 ppm; 0.2 Kg of TiN powder with a purity of more than 99.9% is weighed, The particle size of the powder is distributed between 50nm and 1μm. Mechanical grinding is carried out by means of a ball mill in an inert atmosphere.

[0040] Next, fix the substrate horizontally in the molding cylinder, dry the mixed powder in a vacuum oven for 6 hours, and then send it to the feeding device of the laser selective melting equipment, and then pass in argon protective gas to preheat the substrate.

[0041] Next, the laser source is Yb fiber laser, the wavelength is 1070±10nm, and the spot diameter is 0.13mm; the laser ...

Embodiment 2

[0045] First, establish a three-dimensional model of the mold, then process the model in layers and slice it, and import it into the 3D printing device.

[0046] Next, weigh 2.2Kg of beryllium bronze alloy powder, wherein the pure copper powder is spherical or nearly spherical, the powder particle size distribution is between 15μm and 45μm, and the oxygen content is lower than 1000ppm; weigh 0.1Kg of TiC powder with a purity of more than 99.95%. , The particle size distribution of the powder is between 50nm and 1μm. Mechanical grinding is carried out by means of a ball mill in an inert atmosphere.

[0047] Next, fix the substrate horizontally in the molding cylinder, dry the mixed powder in a vacuum oven for 6 hours, and then send it to the feeding device of the laser selective melting equipment, and then pass in argon protective gas to preheat the substrate.

[0048] Next, the laser source is Yb fiber laser, the wavelength is 1070±10nm, and the spot diameter is 0.13mm; the l...

Embodiment 3

[0052] First, establish a three-dimensional model of the mold, then perform layered slice processing, and import it into the 3D printing device.

[0053] Next, weigh 19.8Kg of tin-bronze alloy powder, wherein the pure copper powder is spherical or nearly spherical, the final particle size distribution is between 20μm and 50μm, and the oxygen content is lower than 1000ppm; 0.2Kg of TiB with a purity of more than 99.99% is weighed 2 Powder, powder particle size distribution in 50nm ~ 1μm. Mechanical grinding is carried out by means of a ball mill in an inert atmosphere.

[0054] Next, fix the substrate horizontally in the molding cylinder, dry the mixed powder in a vacuum oven for 6 hours, and then send it to the feeding device of the laser selective melting equipment, and then pass in argon protective gas to preheat the substrate.

[0055] Next, the laser source is a Yb fiber laser with a wavelength of 1070±10 nm and a spot diameter of 0.15 mm. The laser power is 300W, the sc...

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Abstract

The invention belongs to the related technical field of metal die preparation, and discloses a rapid manufacturing method of enhancement type conformal cooling die copper. The method comprises the steps that a die three-dimensional geometrical model is built and input into 3D printing equipment, and a two-dimensional section contour scanning model is generated; copper base powder and ceramic enhancement phase powder are mixed to be uniform; the mixed powder is dried and subjected to 3D printing to form a forming die, and annealing and separation are carried out; and the forming die is subjected to solution treatment, quenching treatment and aging treatment, and therefore the needed enhancement type conformal cooling die copper product is obtained. By means of the method, the uniform distribution characteristic of the ceramic enhancement phase in a copper substrate can be remarkably improved, the dispersion strengthening effect is achieved, meanwhile, the ceramic phase can be used as anucleating agent to increase nucleation to refine grains, and therefore copper die rigidity, hardness, wear resistance and the like are improved.

Description

technical field [0001] The invention belongs to the related technical field of metal mold preparation, and more specifically relates to a rapid manufacturing method of enhanced conformal cooling mold copper. Background technique [0002] Mold is an indispensable special basic industrial equipment in the contemporary manufacturing industry. In products such as electronics, automobiles, instruments, home appliances and communications, 60% to 80% of the parts must be formed by molds. The mold manufacturing process directly affects the use efficiency, among which the mold cooling efficiency and uniformity have a major impact on the mold life, production efficiency and product quality. Compared with the traditional cooling system composed of straight-hole water channels, the conformal cooling channel has a uniform shape close to the surface of the cavity, which can greatly improve cooling efficiency and cooling uniformity, but it cannot be manufactured by traditional machining an...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C9/00C22C32/00C22C1/10C22F1/08B22F3/105B22F3/24B33Y10/00B33Y70/00
CPCC22C1/0425C22C1/05C22C9/00C22C32/00C22F1/002C22F1/08B22F3/24B33Y10/00B33Y70/00B22F2003/248B22F10/00B22F10/34B22F12/17B22F10/64B22F10/28Y02P10/25
Inventor 文世峰吴雪良周燕季宪泰胡辉王冲魏青松史玉升
Owner HUAZHONG UNIV OF SCI & TECH
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