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Device and method for eliminating electric arc additive manufacturing residual stresses through composite energy impact

A residual stress and additive manufacturing technology, used in manufacturing tools, arc welding equipment, welding equipment, etc., can solve problems such as large residual stress, and achieve the effect of improving porosity, improving overall mechanical properties, and improving residual stress elimination rate.

Pending Publication Date: 2021-06-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] Aiming at the problem of relatively large residual stress in the additive components during the arc additive process, the present invention proposes a device and method that utilizes Hawk energy vibration and roller extrusion to combine the high-frequency impact energy generated by the Hawk energy equipment, and at the same time Combined with the extrusion force of the roller acting vertically insi

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  • Device and method for eliminating electric arc additive manufacturing residual stresses through composite energy impact
  • Device and method for eliminating electric arc additive manufacturing residual stresses through composite energy impact
  • Device and method for eliminating electric arc additive manufacturing residual stresses through composite energy impact

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[0032] The present invention will be further described below in conjunction with the accompanying drawings and examples in order to make a more intuitive understanding of the core points of the present invention. Further, it is within the scope of the present invention without departing from the present invention.

[0033] Such as figure 1 As shown in the specific implementation of the present invention, the corresponding model is first constructed according to the demand, and since the accuracy of the arc adding material is low, the processing reservation of 2 mm is added to the entire model when the model is constructed. The digitally introduced into the hierarchical slice software, planning the additive path, and determines the related parameters of the Guanoke energy vibration impact and the rolling device according to the material characteristics of the add metal metal and the height of the additive. Before the start of the additive, the infrared thermal imager is focused on ...

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Abstract

The invention discloses a device and method for eliminating electric arc additive manufacturing residual stresses through composite energy impact, and belongs to the field of electric arc additive manufacturing. In order to solve the problem that residual stresses and deformation are generated due to the fact that a component is repeatedly subjected to complex heating and cooling in the current arc additive manufacturing formation process, the Hauck energy technology and a rolling wheel are used for acting on the surface of the arc additive component at the same time, and the purposes of eliminating the residual stresses in the electric arc additive component in real time and improving the performance of the additive component are achieved. And the subsequent processing treatment of the part is reduced. The device and method are characterized in that an infrared temperature measuring system is used for monitoring the component temperature in the electric arc additive manufacturing process in real time, the rolling wheel and follow-up Hauck energy vibration impact equipment above the rolling wheel are controlled in real time, the rolling wheel and the follow-up Hauck energy vibration impact equipment jointly and vertically act on the surface of an additive manufacturing material, and therefore the internal residual stresses are reduced. When the residual stresses of the additive component are eliminated, the vibration impact force of Hauck energy and the extrusion force of the rolling wheel are combined, and compared with single impact force or extrusion force, the device and method are more suitable for the additive component formed by accumulation.

Description

technical field [0001] The invention relates to the technical field of arc additive materials, in particular to a device and method for compound energy impact to eliminate residual stress in arc additive manufacturing. Background technique [0002] Additive manufacturing technology has become a hot research hotspot in aerospace and other fields due to its outstanding advantages such as fast forming speed and low manufacturing cost. Compared with welding, riveting, machining and other processes, additive manufacturing technology has significant weight reduction effect, good air tightness, high fatigue performance, high production efficiency, and it is easier to realize automation and flexible manufacturing. Additive manufacturing technology completes the manufacture of components through layered accumulation and layer-by-layer cladding of heat sources. It has been successfully used in aluminum alloys, titanium alloys, stainless steel and other metals. In particular, the arc ...

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Application Information

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IPC IPC(8): B23K9/04B23K9/32
CPCB23K9/04B23K9/32
Inventor 占小红陈丹王磊磊周旭东
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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