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SiC fiber reinforced titanium-based composite hollow shaft and preparation method

A titanium-based composite material and fiber-reinforced technology, which is applied in the field of SiC fiber-reinforced titanium-based composite hollow shaft and its preparation, can solve the problems that the hollow shaft is not suitable for winding fiber shape, and SiC fiber is not pointed out.

Active Publication Date: 2020-06-09
威海蓝谷材料分析研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent does not point out how to lay or fix SiC fibers to prepare parts with complex shapes, nor is it suitable for hollow shafts and other parts with complex shapes that require winding fibers.
In short, there are no relevant reports on the design and preparation technology of hollow shafts of thick SiC fiber-reinforced titanium matrix composites with a diameter of about 100 μm.

Method used

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  • SiC fiber reinforced titanium-based composite hollow shaft and preparation method
  • SiC fiber reinforced titanium-based composite hollow shaft and preparation method
  • SiC fiber reinforced titanium-based composite hollow shaft and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Step 1: Deposit a 20 μm thick TC17 titanium alloy on the surface of a tungsten core SiC fiber with a diameter of 100 μm (the fiber surface has a 2 μm thick pyrolytic carbon coating, and the fiber strength is 3000 MPa) by high vacuum rectangular target DC magnetron sputtering method, Make the fiber volume fraction of the composite area 51%.

[0056] Step 2: Process the inner wall 7 and the outer wall 3 of the shaft with TC17 titanium alloy, the height of which is 300mm, wherein the outer diameter of the inner wall 7 is 50±0.1mm, the inner diameter is 34mm, the wall thickness 1 of the inner wall 7 is 3mm, and the inner wall 7 A series of 30° spiral titanium alloy edges 6 are processed on the outer surface, the thickness of each edge is 0.8mm, the horizontal distance between each edge is 5mm, and the edge height is 5mm, such as Image 6 shown. The shaft outer wall 3 is 300mm high and the inner diameter is TC17 titanium alloy cylinder with an outer diameter of 60mm. The...

Embodiment 2

[0062] Step 1: Deposit a 30 μm thick TC4 titanium alloy on the surface of a tungsten core SiC fiber with a diameter of 100 μm (the fiber surface has a 3 μm thick pyrolytic carbon coating, and the fiber strength is 3000 MPa) by magnetron sputtering, so that the composite material area The fiber volume fraction was 39%.

[0063] Step 2: Process the inner wall 7 and the outer wall 3 of the shaft with TC4 titanium alloy, the height of which is 300mm, wherein the outer diameter of the inner wall 7 is 50±0.1mm, the inner diameter is 34mm, the wall thickness 1 of the inner wall 7 is 3mm, and the inner wall 7 A series of 38° spiral titanium alloy edges 6 are processed on the outer surface, the thickness of each edge is 1mm, the horizontal distance between each edge is 8mm, and the edge height is 5mm. The shaft outer wall 3 is 300mm high and the inner diameter is TC4 titanium alloy cylinder with an outer diameter of 60mm. The inner wall 7 of the shaft can be inserted into the outer ...

Embodiment 3

[0069] Step 1: Deposit 40 μm thick Ti on the surface of a tungsten core SiC fiber with a diameter of 100 μm (with a 4 μm thick pyrolytic carbon coating on the fiber surface and a fiber strength of 3000 MPa) by magnetron sputtering 2 AlNb titanium alloy, so that the fiber volume fraction of the composite region is 31%.

[0070] Step 2: Use Ti 2 The inner wall 7 and the outer wall 3 of the AlNb titanium alloy are processed, and the height is 300mm. A series of 45° helical titanium alloy edges 6, the thickness of each edge is 1.4mm, the horizontal distance between each edge is 10mm, and the edge height is 5mm. The shaft outer wall 3 is 300mm high and the inner diameter is Ti with an outer diameter of 60mm 2 AlNb titanium alloy cylinder. The inner wall 7 of the shaft can be inserted into the outer wall 3, and there is a mechanical fit between the two.

[0071] Step 3: Insert the shaft outer wall 7 into the shaft inner wall 3, and place it vertically on a horizontal table. T...

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Abstract

The invention relates to a SiC fiber reinforced titanium-based composite hollow shaft and a preparation method. The hollow shaft is formed by three parts: 1, an inner wall Ti alloy of the hollow shaft; 2, a SiC fiber reinforced titanium-based composite area; and 3, an outer wall Ti alloy of the shaft. A spiral arrangement mode of a SiC fiber at a certain angle (30 to 45 degrees) in an axial direction is realized through an ingenious design of machining a series of spiral titanium alloy edges on the outer surface of the inner wall. Due to the fact that the shaft mainly bears torsional stress atwork, the arrangement mode is helpful for exerting the maximum tensile strength of the fiber in the axial direction when the shaft works, so that the usability of the shaft is remarkably improved; and a problem of arrangement of the SiC fiber on a shaft part and a forming preparation technology are solved, and the application of the SiC fiber reinforced titanium-based composite in manufacturing of the shaft part is realized.

Description

technical field [0001] The invention belongs to the field of metal-based composite materials, and relates to a SiC fiber-reinforced titanium-based composite material hollow shaft and a preparation method. A preparation technology of SiC fiber-reinforced titanium-based composite parts, that is, using fiber coating method combined with hot isostatic pressing technology to prepare hollow shaft parts used in aerospace and other fields. Background technique [0002] At present, there are mainly two types of drive shaft components: 1. The solid shaft of a single material has a simple shape and a simple manufacturing method. However, since the core area of ​​this type of part occupies a considerable proportion of the overall weight, and the torque provided by the core area is small, the use of this type of shaft will increase the weight of the material and reduce the effective load of aircraft, automobiles, etc.; 2. Hollow shaft made of a single material, this type of shaft effect...

Claims

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Application Information

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IPC IPC(8): B22F5/10B22F3/15C22C49/11C22C49/14C22C47/04C22C47/14C22C101/14
CPCB22F5/10B22F3/15C22C49/11C22C49/14C22C47/04C22C47/14
Inventor 罗贤杨延清朱玉然王友其陈彦
Owner 威海蓝谷材料分析研究院有限公司