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Preparation method of high-strength ta18 titanium alloy components based on plasma fuse addition

A titanium alloy, plasma technology, applied in plasma welding equipment, additive processing, metal processing equipment and other directions, can solve the problems of high preparation cost, difficult to achieve small batch production, etc., achieve low production cost, achieve small batch production, source wide effect

Active Publication Date: 2021-03-26
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-strength TA18 titanium alloy component preparation method based on plasma fuse addition, which is used to solve the high cost of traditional TA18 titanium alloy component preparation, the large amount of deformation stress in the preparation and forming, and the difficulty in small batch production. Shortcomings

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  • Preparation method of high-strength ta18 titanium alloy components based on plasma fuse addition
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  • Preparation method of high-strength ta18 titanium alloy components based on plasma fuse addition

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preparation example Construction

[0033] The preparation method of high-strength TA18 titanium alloy component based on plasma fuse addition comprises the following steps:

[0034] (1) Design the component transition area according to the actual part structure, and establish a three-dimensional CAD solid model according to the designed part structure, and slice and layer along the forming direction of the model;

[0035] (2) Import the above-mentioned slices into the computer, and generate an implementable path according to the width of the single deposition layer being W, the thickness of the single layer being L, and the overlap rate γ;

[0036] (3) Carry out plasma fuse additive manufacturing according to the above path. In this process, TC4 is used as the additive substrate, TC4 and TA2 are used as fuse materials, and TC4 and TA2 are mixed and deposited by wire feeding at the same time to complete the single-layer titanium alloy wire deposition;

[0037] (4) Complete the single-layer titanium alloy wire de...

Embodiment

[0048] This embodiment designs a method for preparing high-strength TA18 titanium alloy components based on plasma fuse addition, taking plasma fuse addition TA18 titanium alloy plate as an example, including the following steps:

[0049](1) The TC4 substrate with a size of 300×300×10mm is used as the substrate for additive manufacturing. The surface of the substrate is polished with 240# and 400# sandpaper, and the surface is wiped with acetone to remove surface oil. The diameter of the selected TC4 and TA2 welding wire is 1.2 mm.

[0050] (2) Fix the TC4 substrate on the workbench, and adjust the wire feeding position of TA2 and TC4, so that the wire feeding front section is in the same plane, and the angle between the wire feeding front end and the substrate is 45°, and the distance between the wire feeding front end and the substrate is controlled at 0.2 mm.

[0051] (3) Set the plasma fuse additive power to 2000W, the focus center is located on the upper surface of the s...

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Abstract

The invention relates to a preparation method of a high-strength TA18 titanium alloy member based on plasma fuse additional materials. The method specifically comprises the following steps of determining a component transition area of a titanium alloy member, and establishing a three-dimensional CAD solid model according to the titanium alloy member; generating an enforceable path according to thewidth W of a single-channel settled layer, the thickness L of a single layer and the overlapping rate gamma; and manufacturing the plasma fuse additional materials according to the path, and quicklyscanning in the direction perpendicular to the settling direction by adopting plasma beams with low current and low ionic gas. By adopting the method, the additional materials of the member are manufactured, finally, the transition area is cut, and annealing treatment is performed on the member. According to the method, the sources of the additional materials are wide, the production efficiency ishigh, the complex member can be directly formed, and the manufacturing time of the complex member is shortened; by adopting the method, small-scale production can be realized, and the previous designtest of the part structure is facilitated; and the TA18 titanium alloy member obtained by adopting the method has the advantages of low internal deformation stress and high tensile strength.

Description

technical field [0001] The invention relates to the technical field of preparation of titanium and titanium alloy components, in particular to an additive manufacturing method for TA18 titanium alloy components. Background technique [0002] TA18 (Ti3Al2.5V) alloy is an α+β-type titanium alloy with low alloying near α. It not only has good room temperature and high temperature mechanical properties, but also has excellent cold and hot processing plasticity, formability and welding performance. Good matching of strength and plasticity is achieved by heat treatment. Therefore, it has become the material of choice for piping systems in the aerospace field with its excellent comprehensive performance. However, the production of TA18 titanium alloy components is difficult because of its high deformation resistance, strong work hardening, easy cracking during the preparation process, low yield and high production cost. [0003] Additive manufacturing is a technology based on a t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K10/00B33Y10/00
CPCB23K10/00B33Y10/00
Inventor 周琦徐俊强郭顺李擎天喻嘉熙王克鸿李泽宇曹嘉铖冯曰海彭勇薛鹏
Owner NANJING UNIV OF SCI & TECH
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