Method and device for manufacturing polyamide three-dimensional object by laser

A three-dimensional object, polyamide technology, applied in additive manufacturing, processing and manufacturing, manufacturing tools, etc., can solve problems such as difficult to achieve results, and achieve the effect of fine three-dimensional feature structure

Active Publication Date: 2017-05-10
HUNAN FARSOON HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When manufacturing polyamide 3D parts, for finer feature structures, use CO 2 Laser sintering is often difficult to achieve the desired effect

Method used

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  • Method and device for manufacturing polyamide three-dimensional object by laser
  • Method and device for manufacturing polyamide three-dimensional object by laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: A polyamide three-dimensional part is manufactured by using a Nd:YAG laser with a wavelength of 1064 nm.

[0039] The material used is the polyamide powder material FS3200 of Hunan Farsoon High-Tech Co., Ltd., and it is fully mixed with aluminum powder with a particle size distribution of 5-40 μm. The volume percentage of FS3200 is 90%, and the aluminum powder is 10%. The device used is the selective laser sintering equipment FS403 of Hunan Farsoon High-Tech Co., Ltd. and correspondingly modified. The matching equipment is equipped with a Nd:YAG laser with a wavelength of 1064nm.

[0040] During the manufacturing process, the layer thickness of the powder coating material is set to 0.1mm, the preheating temperature of the material is about 180°C, the laser power is about 40-80W, the laser spot is controlled at 40-60μm, and the speed is controlled at about 10m / s The laser irradiates the cross-sectional area of ​​the three-dimensional part. When one layer i...

Embodiment 2

[0041] Embodiment 2: Manufacturing carbon fiber-polyamide three-dimensional parts by using a solid-state laser with a wavelength of 532nm.

[0042] The material used is the polyamide powder material FS3400CF of Hunan Farsoon High-Tech Co., Ltd., which contains polyamide powder with a volume fraction of 80% and carbon fiber powder with a volume fraction of 20%, and the carbon fiber diameter is 50-100 microns. The device used is the selective laser sintering equipment FS403 of Hunan Farsoon High-Tech Co., Ltd. and correspondingly modified. The matching equipment is equipped with a solid-state laser with a wavelength of 532 nm.

[0043] During the manufacturing process, the layer thickness of the powder coating material is set to 0.1mm, the preheating temperature of the material is about 180°C, the laser power is about 40-80W, the laser spot is controlled at 40-60μm, and the speed is controlled at about 12m / s The laser irradiates the cross-sectional area of ​​the three-dimensiona...

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Abstract

The invention discloses a method for manufacturing a polyamide three-dimensional object by laser. The method comprises the steps that a layer of manufacturing material is laid and conveyed onto a bottom plate or a selective fusion layer to form a novel material layer; a laser device emits laser; the laser is guided to selectively irradiate a fusion region on the novel material layer; the fusion region is a cross section position, corresponding the three-dimensional object to be manufactured, on the novel material layer, wherein the laser is generated by the laser device with the wavelength being 400 to 1080nm; the manufacturing material is a mixture of a polyamide powder material and a thermal medium material; the thermal medium material absorbs laser energy and conducts the laser energy to polyamide powder, so that the manufacturing material in the laser irradiation region realizes fusion. The polyamide three-dimensional object with high manufacturing precision can be manufactured according to the method.

Description

technical field [0001] The invention relates to a method and a device for preparing a polyamide three-dimensional object by using laser sintering technology. Background technique [0002] The selective sintering of multiple powder layers by laser sintering is a method of manufacturing three-dimensional objects that allows three-dimensional entity. This method is primarily accomplished using thermoplastic polymers. Patents US6136948 and WO9606881 describe this method of manufacturing three-dimensional objects using powdered polymers in detail. [0003] Polyamide is the main raw material for laser sintering technology to manufacture three-dimensional objects. In the prior art, lasers that match polyamide materials are CO 2 The laser has a wavelength of 10600nm, which corresponds to the mid-infrared band. The polyamide powder material has a high wavelength absorption rate in this range, and is absorbed by CO 2 The polyamide powder irradiated by the laser absorbs the laser e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/153B29C64/268B33Y10/00B33Y30/00B33Y70/00
CPCB33Y10/00B33Y30/00B33Y70/00
Inventor 鲍光彭伟肖朋
Owner HUNAN FARSOON HIGH TECH CO LTD
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