Nylon composite powder material for selective laser sintering

A composite powder and laser sintering technology, applied in the field of selective laser sintering technology, can solve the problems of yellowing and easy oxidation of the workpiece surface, and achieve the effects of high sintering accuracy, enhancing the appearance and avoiding oxidation and yellowing.

Inactive Publication Date: 2017-02-15
WUHAN SAPW AUTOMOBILE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide a nylon composite powder material for selective laser sintering, which can solve the problem that the surface of the workpiece is easily oxidized and presents local yellowing while enhancing the mechanical strength of the workpiece

Method used

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  • Nylon composite powder material for selective laser sintering
  • Nylon composite powder material for selective laser sintering
  • Nylon composite powder material for selective laser sintering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 80kg of nylon, 19.5kg of glass fiber, and 0.5kg of silver-white pearl powder and mix them evenly. The particle size of the nylon is 60 μm, the particle size of the glass fiber is 20 μm, and the particle size of the titanium dioxide is 60 μm; Laser sintering is carried out under the conditions of 40W, scanning speed of 12.7m / s, powder coating thickness of 0.1mm, and scanning distance of 0.3mm. The surface of the workpiece after sintering is white and bright, with high precision and no sintering warpage.

Embodiment 2

[0021] Weigh 70kg of nylon, 29kg of glass fiber, and 1kg of titanium dioxide and mix them uniformly. The particle size of the nylon is 50 μm, the particle size of the glass fiber is 40 μm, and the particle size of the titanium dioxide is 30 μm; Laser sintering was carried out under the conditions of scanning speed of 12.7m / s, powder coating thickness of 0.1mm, and scanning distance of 0.3mm. The surface of the workpiece after sintering is white and bright, with high precision and no sintering warpage.

Embodiment 3

[0023] Weigh 80kg of nylon, 19.5kg of glass fiber, and 0.5kg of white talc powder and mix them evenly. The particle size of the nylon is 55 μm, the particle size of the glass fiber is 30 μm, and the particle size of titanium dioxide is 40 μm; Laser sintering is carried out under the conditions of 42W, scanning speed of 12.7m / s, powder coating thickness of 0.1mm, and scanning distance of 0.3mm. The surface of the workpiece after sintering is white and bright, with high precision and no sintering warpage.

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Abstract

The invention discloses a nylon composite powder material for selective laser sintering. The nylon composite powder material comprises the following components: nylon, glass fiber and a white mineral matter coloring agent, and the weight of the white mineral matter coloring agent is 0.5-1% of the total weight of the nylon composite powder material. The nylon composite powder material enhances mechanical strength of workpieces, and solves the problems that the surface of the workpiece is easy to be oxidized and parts of the surface show yellow color.

Description

technical field [0001] The invention relates to the technical field of selective laser sintering technology, and more specifically relates to a nylon composite powder material for selective laser sintering. Background technique [0002] Selective laser sintering (SLS) is one of the advanced rapid prototyping techniques developed in the late 1980s. This technology integrates computer technology, numerical control technology, laser technology and material processing technology, and is a major breakthrough in the field of manufacturing technology in the past 20 years. Selective laser sintering technology applies to a wide range of materials, suitable for the manufacture of prototype functional parts and molds, and can process organic polymers, paraffin wax, metals, ceramics and other workpieces. [0003] Nylon material has high mechanical strength and good wear resistance. When the temperature reaches above the melting point, the melt viscosity is very low. Its SLS sintering r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K7/14C08K3/22C08K3/34C08K3/30B29C67/00
CPCC08K7/14C08K3/22C08K3/30C08K3/34C08K2003/2241C08K2003/3036C08K2003/3045C08K2201/003C08L77/00
Inventor 蒋晓冬洪坦贾尧
Owner WUHAN SAPW AUTOMOBILE TECH
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