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Stone-plastic composite powder for laser sintering 3D manufacturing technology and preparation method of stone-plastic composite powder

A technology of laser sintering and composite powder, applied in the directions of additive manufacturing, processing and manufacturing, manufacturing tools, etc., can solve the problems of high cost and low strength of sintered parts, and achieve the effect of low embodied energy, improved mechanical properties, and energy saving and promotion.

Active Publication Date: 2014-06-25
NORTHEAST FORESTRY UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of low strength of sintered parts prepared from wood-plastic composite materials and rice husk powder hot-melt adhesive composite materials for laser sintering, and high cost when preparing sintered parts with metal powder or ceramic powder, and provides laser Stone-plastic composite powder for sintering 3D manufacturing technology and its preparation and laser sintering method

Method used

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  • Stone-plastic composite powder for laser sintering 3D manufacturing technology and preparation method of stone-plastic composite powder

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specific Embodiment approach 1

[0013] Embodiment 1: The stone-plastic composite powder for laser sintering 3D manufacturing technology in this embodiment is composed of nylon 12 powder and limestone powder; the volume ratio of nylon 12 powder to limestone powder is (3-2):1.

specific Embodiment approach 2

[0014] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the particle size of the limestone powder is ≤150 μm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that the particle size of the nylon 12 powder is 40-80 μm. Others are the same as in the first or second embodiment.

[0016] Embodiment 4: The preparation method of stone-plastic composite powder for laser sintering 3D manufacturing technology described in Embodiment 1 is carried out according to the following steps:

[0017] 1. After the limestone powder is dried, sieve it with a vibrating sieve machine to obtain limestone powder with uniform particle size;

[0018] 2. According to the volume ratio of nylon 12 powder and limestone powder (3~2): 1, weigh nylon 12 powder and limestone powder obtained in step 1, and add them to the ceramic grinding tank under the condition that the rotation speed is 1000~1200r / min Grinding and mixing for 10-12 hours at the bottom to obtain stone-plastic composite powder for laser sintering 3D manufacturing technology.

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Abstract

The invention provides stone-plastic composite powder for laser sintering 3D manufacturing technology and a preparation method of the stone-plastic composite powder, and relates to composite powder for laser sintering 3D manufacturing technology as well as a preparation method and a use method of the composite powder. The stone-plastic composite powder provided by the invention is used for solving the technical problems of low strength of a sintered workpiece prepared from a wood-plastic composite material and a rice husk powder-hot melt adhesive composite material for the existing laser sintering, and high cost of a sintered workpiece prepared from metal powder or ceramic powder. The stone-plastic composite powder for laser sintering 3D manufacturing technology provided by the invention is composed of nylon 12 powder and limestone powder. The preparation method comprises the steps of adding the nylon 12 powder and the limestone powder into a ceramic grinding tank for grinding and mixing to obtain the stone-plastic composite powder. During laser sintering, a laser beam scans a sub-region in a manner of scanning on a horizontal plane, and the laser power is 15-20 W, so that the laser power is low. The stone-plastic composite powder provided by the invention is applied to the laser sintering 3D manufacturing field.

Description

technical field [0001] The invention relates to a stone-plastic composite powder used in laser sintering 3D manufacturing technology and a preparation method thereof. Background technique [0002] Laser sintering is a method of additive manufacturing. This process also uses the laser as the energy source, and the powder of plastic, wax, ceramic, metal or its composite is uniformly sintered on the processing plane through the laser beam. Spread a layer of very thin (submillimeter) powder evenly on the workbench as the raw material. Under the control of the computer, the laser beam scans the layered two-dimensional data at a certain speed and energy density through the scanner. After scanning by the laser beam, the powder at the corresponding position is sintered into a solid sheet with a certain thickness, and the unscanned part remains in the form of loose powder. After this layer is scanned, the next layer needs to be scanned. First, lower the working table according to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K3/26B29C67/00B29C64/153B29C64/268B33Y10/00
CPCB29C64/153C08K3/26C08K2003/265C08K2201/003C08L77/02
Inventor 郭艳玲姜凯译布雷尔·L·大卫曾伟梁赵德金张慧王璞旋于志祥耿雷
Owner NORTHEAST FORESTRY UNIVERSITY
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