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A method for additive manufacturing of impact-resistant protective components

An additive manufacturing and impact-resistant technology, which is applied in the field of additive manufacturing of impact-resistant protective components, can solve problems such as the inability to meet the needs of aircraft weight reduction, damage to the protective structure of the protective recorder, and high density of alloy steel, and achieve improved Printing efficiency, excellent mechanical strength, and short production cycle

Active Publication Date: 2022-05-24
SHAANXI QIANSHAN AVIONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The protective structure of the traditional protective recorder is machined and manufactured from alloy steel materials, which can no longer resist the strong mechanical impact brought by the impact of high-speed aircraft, which will inevitably lead to damage to the protective structure of the protective recorder, damage to the internal recording chip, and the density of the alloy steel It is very large, which makes the structural parts heavy and can no longer meet the needs of aircraft weight reduction

Method used

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  • A method for additive manufacturing of impact-resistant protective components
  • A method for additive manufacturing of impact-resistant protective components

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Experimental program
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Effect test

preparation example Construction

[0039] as Figure 1 As shown, a flowchart of an additive manufacturing method provided by the present invention, the preparation method comprising the following steps:

[0040] S1: Preparation of raw materials:

[0041] The zirconia powder and lubricant, organic polymer binder, organic alcohol plasticizer are evenly mixed to obtain a special ceramic powder of zirconium dioxide;

[0042] The filament polyte-p-terembenzobioxazole fiber and the thermoplastic phenolic resin were mixed evenly to obtain a PBO fiber composite material;

[0043] S2: Digital analog design:

[0044]Use CAD software to design the digital module of special ceramic components, and design the manufacturing trajectory data of fused deposition of POB fiber composite components based on the digital module;

[0045] S3: Preparation of special ceramic composites:

[0046] The digital module of the special ceramic components designed in the above steps is introduced into the SLS equipment, and the special ceramic comp...

Embodiment 1

[0059] The mass of each component is: zirconia powder 70 parts, lubricant 8 parts, organic polymer binder 1 part, organic alcohol plasticizer 1 part, of which the particle size of zirconia powder is 50-80nm. The mass composition of PBO fiber composite materials is as follows: 55 parts of PBO fiber, 30 parts of thermoplastic phenolic resin, and 5 parts of tackifier.

[0060] Process parameters: SLS equipment parameters: special ceramic powder with a thickness of 45 μm per laying, laser power of 500W, laser spot diameter of 50 μm, laser scanning speed of 0.2m / s; FDM equipment manufacturing parameters: universal nozzle outlet temperature of 150 °C, PBO fiber composite material spray speed of 0.8m3 / h, thickness of each layer of 0.5mm, the total thickness of impact protection components of 4mm.

[0061] The prepared high-speed impact protection member has a density of 7.25g / cm3 and a tensile strength of 890MPa at room temperature.

Embodiment 2

[0062] Example 2: The mass of each component in the special ceramic powder is: 80 parts of zirconia powder, 10 parts of lubricant, 2 parts of organic polymer binder, 2 parts of organic alcohol plasticizer, wherein the particle size of zirconia powder is 50-80nm. The mass composition of PBO fiber composite materials is as follows: 60 parts of PBO fiber, 35 parts of thermoplastic phenolic resin, and 10 parts of tackifier.

[0063] Process parameters: SLS equipment parameters: each time laying thickness of 60μm of special ceramic powder, laser power of 1500W, laser spot diameter of 75μm, laser scanning speed of 0.5m / s; FDM equipment manufacturing parameters: universal nozzle outlet temperature of 155 °C, PBO fiber composite material spray speed of 1.1m 3 / h, the thickness of each layer is 1mm, and the total thickness of the impact protection member is 5mm.

[0064] The prepared high-speed impact protection member has a density of 7.41g / cm3 and a tensile strength of 1050MPa at room te...

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Abstract

A method for additive manufacturing of impact-resistant protective components, the method comprising the following steps: S1: preparing zirconia special ceramic powder; S2: preparing PBO fiber composite material; S3: designing the digital model of the special ceramic component, and designing according to the data fused deposition manufacturing trajectory data of POB fiber composite components; S4: Import the digital model of the special ceramic component designed in the above steps into the SLS equipment, and use zirconia special ceramic powder to add material layer by layer to manufacture the special ceramic component; S5: Step S3 The fused deposition manufacturing trajectory data of the PBO fiber composite material component designed in the above steps is imported into the FDM equipment, and the PBO fiber composite material is bonded to the special ceramic component obtained in the above steps to prepare the protective component; S6: further maintain the shape of the above protective component, that is, Formed impact protection components. The manufacturing method provided by the invention has simple process, short production cycle and high production efficiency; and the prepared protective member has low density and good impact resistance.

Description

Technical field [0001] The present invention relates to the field of composite structure manufacturing and additive manufacturing technology, specifically to an additive manufacturing method for impact protection components. Background [0002] The protective recorder is a necessary equipment used by the aircraft to record its travel data and detect the operating status. In the event of an accident such as a crash or impact of an aircraft and after the accident, it is necessary to ensure that the internal recording chip is intact and can effectively download data, which requires the protective structure of the protective recorder to have impact-resistant performance. [0003] The traditional protective recorder protective structure is made of alloy steel material mechanical processing and molding, which can no longer resist the strong impact brought about by the impact of the high-speed aircraft, which will inevitably lead to damage to the protective structure of the protective r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/02B33Y10/00B33Y70/10
CPCC04B26/02B33Y10/00B33Y70/00C04B2201/20C04B2201/50C04B14/306C04B24/02C04B24/302C04B16/0675C04B2103/40C04B2103/44
Inventor 邹亮陈军
Owner SHAANXI QIANSHAN AVIONICS