A non-destructive hole-making method for continuous fiber reinforced ceramic matrix composites

A technology of continuous fiber and composite materials, which is applied in the field of preparation of ceramic matrix composite materials, can solve problems affecting the performance of components, damage of continuous fibers, and reduction of mechanical properties of materials, so as to avoid defect damage, maintain structural integrity, and maintain mechanical properties. The effect of performance improvement

Active Publication Date: 2022-04-19
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Problems solved by technology

At present, the commonly used hole making method is to make holes on complete materials by subtractive machining, such as machining drilling holes, laser hole making, water cutting hole making, wire cutting hole making, etc. All of the above methods will cause holes in the material. The continuous fiber is damaged, which reduces the mechanical properties of the material and affects the overall performance of the component

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  • A non-destructive hole-making method for continuous fiber reinforced ceramic matrix composites
  • A non-destructive hole-making method for continuous fiber reinforced ceramic matrix composites
  • A non-destructive hole-making method for continuous fiber reinforced ceramic matrix composites

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Embodiment Construction

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and the following embodiments:

[0027] See attached Figures 1 to 4 As shown in the present embodiment, the size of the continuous silicon carbide fiber reinforced silicon carbide ceramic matrix composite flat member is 100mm×50mm×5mm, the central contains a diameter of 6mm straight hole 5, the steps of the continuous fiber reinforced ceramic matrix composite without injury making method are as follows:

[0028] Step 1, according to the size, shape and location requirements of hole 5, the design and preparation of fiber laying template 1, the size of fiber laying template 1 is 100mm×50mm× 10mm, fiber laying template 1 is set in the center of the prefill 2, the diameter of prefill 2 is 6mm, the thickness is 5mm, and the fiber laying template 1 and prefill 2 are formed by high-purity graphite;

[0029] Step two, the continuous silicon carbide fiber 3 in accordance with the...

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Abstract

The invention is a non-damage hole-making method of continuous fiber reinforced ceramic matrix composite material. The method realizes the process control in the process of making holes through the design and preparation of fiber laying template, continuous fiber laying, matrix filling, and non-damage hole making. At the same time, the structural integrity of the continuous fiber-reinforced ceramic matrix composite is maintained. Compared with the existing subtractive machining hole-making method, it will not cause damage to the continuous fiber and avoid other defects caused by processing. It can make the continuous pore structure The mechanical properties of fiber-reinforced ceramic matrix composites are increased by 10% to 60%.

Description

Technical field [0001] The present invention is a continuous fiber reinforced ceramic matrix composite wound-free hole making method, belongs to the field of preparation technology of ceramic matrix composites. Background [0002] Continuous fiber reinforced ceramic matrix composites have the advantages of high temperature resistance, oxidation resistance, wear resistance, corrosion resistance and other advantages of ceramic materials, and have excellent external impact load resistance due to the reinforced toughening effect of continuous fibers. Continuous fiber reinforced ceramic matrix composites have been widely used in advanced aero-engine hot-end components and advanced aircraft thermal protection systems with good high-temperature stability and high-temperature mechanical properties. [0003] Continuous fiber reinforced ceramic matrix composites often require hole making in practical applications, such as assembly holes for connections, air film holes for cooling, etc. At...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/80C04B35/571C04B35/622C04B35/58C04B35/01
CPCC04B35/571C04B35/622C04B35/58C04B35/01C04B2235/5244C04B2235/5256C04B2235/5248C04B2235/524C04B2235/522
Inventor 王启明谢巍杰邱海鹏陈明伟王岭刘善华关宏赵禹良王晓猛张冰玉罗文东马新刘时剑梁艳媛李秀倩
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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