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Method and device for laser manufacturing polyamide three-dimensional objects

A technology of three-dimensional objects and polyamide, which is applied in processing and manufacturing, manufacturing tools, additive manufacturing, etc., can solve problems such as difficult to achieve effects, and achieve the effect of fine three-dimensional characteristic structures

Active Publication Date: 2018-11-09
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 laser manufacturing polyamide three-dimensional objects
  • Method and device for laser manufacturing polyamide three-dimensional objects

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 Patents(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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