Quick forming method for complex structure of shape memory alloy based on multi-field auxiliary adjusting control

A technology of memory alloy and complex structure, which is applied in the field of shape memory alloy, can solve the problems of low efficiency of material addition and complicated process, and achieve the effect of high material utilization rate, uniform structure and reduced production cost

Active Publication Date: 2018-07-20
HARBIN ENG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of complex process and low efficiency of material addition in the traditional preparation methods of shape memory alloy structures such as smelting and casting, and to propose a rapid prototyping method of complex structure of shape memory alloy based on multi-field auxiliary regulation

Method used

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  • Quick forming method for complex structure of shape memory alloy based on multi-field auxiliary adjusting control
  • Quick forming method for complex structure of shape memory alloy based on multi-field auxiliary adjusting control
  • Quick forming method for complex structure of shape memory alloy based on multi-field auxiliary adjusting control

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specific Embodiment approach 1

[0016] Specific implementation mode 1: In this implementation mode, the rapid prototyping method of the shape memory alloy complex structure based on multi-field assisted regulation is implemented according to the following steps:

[0017] 1. According to the atomic ratio of 1.2 to 1.5:1, the Ni powder and Ti powder are ball milled and mixed evenly, and the shape memory alloy powder material is obtained after drying;

[0018] 2. Use 3D drawing software to construct the structural part model, import the structural part model into the additive path planning software in STL format, and then plan the additive path of the entire structural part model, and output the additive path planning results in G code Format export to the additive control system;

[0019] 3. Put the shape memory alloy powder material obtained in step 1 into the powder feeder of the plasma arc additive manufacturing equipment, put the substrate, ultrasonic generator and magnetic field generator into the protect...

specific Embodiment approach 2

[0022] Embodiment 2: This embodiment is different from Embodiment 1 in that the particle size of Ni powder and Ti powder in Step 1 is 50-150 um.

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment is different from Embodiment 1 or 2 in that the ball milling and drying process in Step 1 is protected by argon.

[0024] In this embodiment, the powder is protected from oxidation by argon protection.

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Abstract

The invention discloses a quick forming method for the complex structure of shape memory alloy based on multi-field auxiliary adjusting control, and belongs to the field of shape memory alloy. The problems that existing smelting, casting and other traditional shape memory alloy structure preparation methods are complex in technology and low in material increasing efficiency are solved. The quick forming method comprises the steps that 1, a shape memory alloy powder material is prepared; 2, a structure piece model is built through three-dimensional drawing software and then guided into materialincreasing path planning software, and the material increasing path of the whole structure piece model is planned; 3, a base plate, an ultrasonic generator and a magnetic field generator are put intoa protection bin, additive forming of a structure piece is conducted by a plasma arc gun head according to the material increasing planning path, and a magnetic field and/or an ultrasonic field are/is applied in the material increasing process to assist in forming; and 4, heat treatment is conducted on the structure piece subjected to material increasing. According to the quick forming method, through multi-field assistance and plasma arc additive manufacturing, the function and structure integrated quick forming of the shape memory alloy and the structure piece of the shape memory alloy is achieved.

Description

technical field [0001] The invention belongs to the field of shape memory alloys, and in particular relates to a forming method of a shape memory alloy structure based on multi-field auxiliary regulation. Background technique [0002] As a smart material with special functions, shape memory alloy has a good application prospect in engineering. Among them, nickel-titanium alloys are typical representatives of shape memory alloys. Because of their unique memory properties and superelasticity, good wear resistance and corrosion resistance, high damping characteristics, and excellent biocompatibility, they have gradually been widely used in machinery. , electronics, machinery, aerospace, energy, biomedical, transportation, and daily necessities, etc., used to prepare functional structural parts such as artificial bones, lightweight drives, transducers, and high-damping shock-absorbing devices. Taking the typical NiTi shape memory alloy as an example, the commonly used preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00
CPCB22F3/105B22F2003/1051B22F2999/00B33Y10/00B22F2202/05B22F2202/01Y02P10/25
Inventor 金国卢冰文崔秀芳史望兴冯相如李洋董美伶
Owner HARBIN ENG UNIV
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