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Method for preparing niti shape memory alloy components based on electron beam fuse additive

A memory alloy and electron beam technology, applied in the field of additive manufacturing, can solve the problems of low efficiency, oxidation performance, high cost of NiTi shape memory alloy, etc., and achieve the effect of high deposition efficiency, high density and low material cost

Active Publication Date: 2021-09-21
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for preparing NiTi shape memory alloy components based on electron beam fuse additives, so as to solve the problem of high cost, low efficiency and serious oxidation of NiTi shape memory alloys prepared in the prior art. and poor performance

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  • Method for preparing niti shape memory alloy components based on electron beam fuse additive
  • Method for preparing niti shape memory alloy components based on electron beam fuse additive
  • Method for preparing niti shape memory alloy components based on electron beam fuse additive

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Embodiment 1

[0045] This embodiment provides a method of manufacturing a NITI-shaped memory alloy based on an electron beam fuse, including the following steps:

[0046] (1) Target NiTi alloy member is used to store three-dimensional modeling and hierarchically, the planned 20-layer path, each layer is 40mm straight line, and the reciprocating print method is taken, that is, the end point of the first layer is the beginning of the second layer. Take this, so on.

[0047] (2) Select Niti alloy wire with a Ni atom ratio of 50.8 at.% As a printing material, 2 mm in diameter.

[0048] (3) Select the Ni atom ratio of 50.8 at.% Of the Niti alloy plate as the printing substrate, the size of 200mm (length) * 100mm (width) * 15mm (high), before printing, surface polishing and cleaning the substrate before printing, removing impurities, Make the surface bright state.

[0049] (4) Start the device, open the vacuum chamber sliding door, remove the workbench from the vacuum chamber, and secure the substrat...

Embodiment 2

[0059] This embodiment provides a method of manufacturing a NITI-shaped memory alloy based on an electron beam fuse, including the following steps:

[0060] (1) Target NiTi alloy member is used to store three-dimensional modeling and layered, and the 15-layer path is planned. The path of 60mm per layer is a straight line of 60 mm. The reciprocating print method is taken, that is, the end point of the first layer is the start of the second layer. Take this, so on.

[0061] (2) Select Niti alloy wire with Ni atom ratio of 50.1at.% As a print material, 1 mm in diameter.

[0062] (3) Select Ni atom ratio 50.1at.% Of NiTi alloy plate as the print substrate, size of 200mm (length) * 100mm (width) * 15mm (high), before printing, surface polishing and cleaning the substrate, remove impurities, Make the surface bright state.

[0063] (4) Start the device, open the vacuum chamber sliding door, remove the workbench from the vacuum chamber, and secure the substrate on the workbench.

[0064] ...

Embodiment 3

[0069] This embodiment provides a method of fabricating a Niti shape memory alloy based on an electron beam fuse, including the steps of:

[0070] (1) Target NiTi alloy member is used to model and layered, and the integrated planning 10 layer path, each layer is 80mm straight line, and the reciprocating print method is taken, that is, the end point of the first layer is the beginning of the second layer. Take this, so on.

[0071] (2) The Niti alloy wire is selected from 52.3 at.% Of the Niti alloy wire as the printing material, and 1.2 mm is selected in diameter.

[0072] (3) Select the Niti alloy plate with a Ni atom ratio of 52.3t.% As the printing substrate, a size of 200mm (length) * 100mm (width) * 15mm (high), before printing, the substrate is polished and cleaned, remove impurities, Make the surface bright state.

[0073] (4) Start the device, open the vacuum chamber sliding door, remove the workbench from the vacuum chamber, and secure the substrate on the workbench.

[0...

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Abstract

The invention discloses a method for preparing a NiTi shape memory alloy component based on the addition of electron beam fuse, comprising: establishing a three-dimensional solid model based on the target NiTi shape memory alloy component, slicing and determining the deposition path of each layer; using a NiTi alloy plate As the additive substrate, NiTi alloy wire is used as the printing wire; turn on the equipment and evacuate until the vacuum degree is less than 4*10 ‑2 Pa, print layer by layer after setting the manufacturing parameters. The method of the present invention uses silk as the printing material, which is low in cost and high in efficiency, and can quickly and directly form complex NiTi shape memory alloy components; the preparation process is carried out in a vacuum, and the prepared components are free from oxidation and other impurity gases; The prepared components have excellent mechanical properties, high density, and no obvious defects; NiTi alloy components with excellent functional properties and large tensile strain can be printed, and the functional properties are significantly improved after solution annealing and aging treatment.

Description

Technical field [0001] The present invention belongs to the field of addition, and more particularly to a method of preparing a NITI-shaped memory alloy member based on an electron beam fuse. Background technique [0002] As an advanced intelligent material, the shape memory alloy has a huge potential in the manufacturing of intelligent device sensing and driving devices due to its unique shape memory effect and super elasticity; since 1963, related shape memories The research and development of alloys has been widely concerned by the majority of materials. [0003] In a known dozens of shape memory alloys, Niti alloys are excellent in performance and the most widely used, and the most widely used in its larger performance, good biocompatibility, and corrosion resistance. kind. As a new type of advanced sensing and drive material, Niti alloy has been covered by multiple fields such as machinery, electronics, automotive, aerospace and biomedical, and simplifies structures, reducin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K15/00B23K15/06B33Y10/00B33Y40/00
CPCB23K15/0033B23K15/0086B23K15/06B33Y10/00B33Y40/00
Inventor 常保华蒲泽都东王开明刘冠
Owner TSINGHUA UNIV