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Stress slow release method for TC4 titanium alloy additive manufacturing component based on double electron beams

A technology of additive manufacturing and dual electron beams, which is applied in the field of additive manufacturing to achieve the effect of improving stress

Active Publication Date: 2016-07-27
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 slow release method for TC4 titanium alloy additive manufacturing component based on double electron beams
  • Stress slow release method for TC4 titanium alloy additive manufacturing component based on double electron beams
  • Stress slow release method for TC4 titanium alloy additive manufacturing component based on double 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 stress slow release method for a TC4 titanium alloy additive manufacturing component based on double electron beams, particularly relates to a stress slow release control method for the large-size TC4 titanium alloy additive manufacturing component based on the double electron beams, and relates to the technical field of additive manufacturing. The method comprises the steps of A, establishing and correcting a temperature field model of the double electron beams; and B, carrying out filler wire additive manufacturing through the double electron beams. According to the method, the phase change is controlled in real time in the additive manufacturing process through the double electron beam technology, slow release of stress of the large-size TC4 titanium alloy additive manufacturing component is realized through the mode of improving the integral plasticity by controlling the phase change, a new method is provided for solving the key technological problem of manufacturing of the large-size TC4 titanium alloy additive manufacturing component, the utilization potentiality of the additive manufacturing technology in the field of aviation, aerospace, petroleum, the chemical industry and metallurgy is improved, and theoretical and technical guidance is provided for additive manufacturing of other metal material.

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 Applications(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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