High-strength TA18 titanium alloy component preparing method based on electronic beam fuse wire additional material

A technology of electron beam and titanium alloy, which is applied in the direction of electron beam welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of difficult to realize small batch production and high preparation cost, and achieve small batch production, low production cost and high production cost. high efficiency effect

Active Publication Date: 2019-03-26
NANJING UNIV OF SCI & TECH
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  • 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 electron beam fuse addition, which is used to solve the high cost of traditional TA18 titanium alloy component preparation, a large amount of deformation stress in the preparation and forming, and the difficulty in realizing small batches production shortcomings

Method used

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  • High-strength TA18 titanium alloy component preparing method based on electronic beam fuse wire additional material
  • High-strength TA18 titanium alloy component preparing method based on electronic beam fuse wire additional material
  • High-strength TA18 titanium alloy component preparing method based on electronic beam fuse wire additional material

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preparation example Construction

[0032] The preparation method of high-strength TA18 titanium alloy components based on electron beam fuse addition includes the following steps:

[0033] (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;

[0034] (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;

[0035] (3) Electron beam fuse additive manufacturing is carried out 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. ;

[0036] (4) Complete the single-layer ...

Embodiment

[0047] This embodiment designs a high-strength TA18 titanium alloy component preparation method based on electron beam fuse addition, taking electron beam fuse addition TA18 titanium alloy plate as an example, including the following steps:

[0048](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.

[0049] (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.

[0050] (3) The power of the electron beam fuse additive is set to 2500W, the focus center is located o...

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Abstract

The invention discloses a high-strength TA18 titanium alloy component preparing method based on an electronic beam fuse wire additional material. The method comprises the following steps that the component transition area of a titanium alloy component is determined, a three-dimensional CAD solid model is established according to the titanium alloy component, and an implementable path is generatedaccording to the single-way deposition layer width W, the single-layer thickness L and the overlap rate gamma; electronic beam fuse wire additional material manufacturing is conducted according to theabove path, and single-layer titanium alloy wire deposition is finished; single-layer titanium alloy wire deposition is finished according to the above steps, and a small beam-current electronic beamis adopted for conducting rapid scanning in the direction perpendicular to the deposition direction; till all sheet layers are deposited, and component additional material manufacturing is finished;and the transition area part is cut away, and component annealing treatment is conducted. According to the method, the additional material raw material source is wide, finished TA2 and TC4 welding wires exist, and special making of TA18 welding wires is not needed. The method is high in production efficiency and low in production cost, direct complex component forming can be achieved, and the complex component manufacturing time is shortened.

Description

technical field [0001] The invention relates to the technical field of preparation of titanium and titanium alloy components, in particular to a method for preparing high-strength TA18 titanium alloy components based on electron beam fuse addition. 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 manuf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K15/00
CPCB23K15/0086B23K15/0093
Inventor 周琦徐俊强郭顺曹嘉铖喻嘉熙王克鸿李擎天李泽宇张德库黄俊薛鹏
Owner NANJING UNIV OF SCI & TECH
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