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Stress mitigation method for tc4 titanium alloy additive manufacturing components based on dual electron beams

An additive manufacturing, double electron beam technology, applied in the field of additive manufacturing, to achieve the effect of improving stress

Active Publication Date: 2017-12-01
SHANGHAI UNIV OF ENG SCI
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Problems solved by technology

[0008] The purpose of the present invention is to effectively release the stress of the cladding layer to solve the problem of stress accumulation effect of large-scale parts, and proposes a control method for real-time stress release of large-scale TC4 titanium alloy additive manufacturing components

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  • Stress mitigation method for tc4 titanium alloy additive manufacturing components based on dual electron beams
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  • Stress mitigation method for tc4 titanium alloy additive manufacturing components based on dual electron beams

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and embodiment the present invention will be further described

[0036] Embodiments of the invention (as attached Figure 4 , 5 shown)

[0037] 1. Establishment and correction of the dual electron beam temperature field model

[0038] Step 1. Before additive manufacturing, use the Marc finite element simulation software to establish a temperature field model for the dual electron beam additive manufacturing process by loading the thermophysical parameters, grid division, heat source, and boundary conditions of the TC4 titanium alloy.

[0039] Step 2. Weld the thermocouple 11 to the area near the cladding layer 7 on the TC4 base material substrate 8, and its output end is connected to the external temperature measuring device 13 through the plug of the flange 12 of the vacuum chamber 1, and then connected to the computer 14.

[0040]Step 3. Use the thermocouple 11 to collect the temperature of the additive manufacturing p...

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Abstract

The invention discloses a method for stress slowing release of TC4 titanium alloy additive manufacturing components based on double electron beams, and specifically refers to a method for controlling stress slow release of large-sized TC4 titanium alloy additive manufacturing components based on double electron beams, which relates to additive manufacturing field of manufacturing technology. The invention consists of the establishment and correction of the double electron beam temperature field model in step A, and the wire filling additive manufacturing in step B by using the double electron beams. The invention uses dual electron beam technology to control the phase transition in real time during the additive manufacturing process, and realizes the slow release of the stress of the large-scale TC4 titanium alloy additive manufacturing component by controlling the phase transition to improve the overall plasticity of the component. It is a large-scale TC4 The key technical problems in the manufacture of titanium alloy additive manufacturing components provide a new method, which improves the application potential of additive manufacturing technology in aviation, aerospace, petroleum, chemical industry, metallurgy and other fields, and provides a new method for additive manufacturing of other metal materials. Theory and technical guidance.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, and specifically refers to a method for controlling stress release of a large-size TC4 titanium alloy additive manufacturing component based on dual electron beams. Background technique [0002] The material composition of TC4 titanium alloy is Ti-6Al-4V, which belongs to (α+β) type titanium alloy, which has good corrosion resistance, low density, high specific strength, excellent toughness, high temperature mechanical properties and weldability, etc. A series of advantages have been successfully applied in aerospace, petrochemical, shipbuilding, automobile, pharmaceutical and other departments. In particular, with the increasingly prominent demand for titanium alloys in the aerospace field, titanium alloy additive manufacturing, as a saving and efficient technology, has become the main direction of titanium alloy manufacturing in the future. [0003] But at the same time, due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B33Y10/00B33Y50/02
CPCB33Y10/00B33Y50/02B22F10/00B22F10/25B22F10/36B22F10/80Y02P10/25
Inventor 赵健王付鑫于治水李东王博
Owner SHANGHAI UNIV OF ENG SCI
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