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Wire arc additive manufacture (WAAM) synchronous ultrasonic hot rolling and quick cooling combined processing device and method

A composite processing and arc technology, applied in the field of 3D printing, can solve the problems of the shape and design of the finished product, the metal cannot be cooled quickly, and it is not easy to control the shape, etc., to eliminate internal defects, reduce metal defects, and achieve high unit pressure. Effect

Active Publication Date: 2020-06-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, for the molten metal that has just cooled down, hammering it from above will easily cause the metal to displace to both sides, so it is not easy to control the shape
The rapid cooling device is not used, so that the metal cannot be cooled quickly to maintain better performance, and the molten metal has strong fluidity. If the rapid cooling is not performed, the uncertainty of the flow direction of the molten metal will cause the shape of the finished product to differ from the design. Poor forming accuracy

Method used

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  • Wire arc additive manufacture (WAAM) synchronous ultrasonic hot rolling and quick cooling combined processing device and method
  • Wire arc additive manufacture (WAAM) synchronous ultrasonic hot rolling and quick cooling combined processing device and method
  • Wire arc additive manufacture (WAAM) synchronous ultrasonic hot rolling and quick cooling combined processing device and method

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Embodiment Construction

[0030] In order to make the object, technical solution and effect of the present invention clearer and clearer, the following examples are given to further describe the present invention in detail. It should be pointed out that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0031] Such as Figure 1~2 As shown, the arc additive manufacturing synchronous ultrasonic hot rolling and rapid cooling composite processing device of the present invention is mainly divided into an additive manufacturing device, an ultrasonic vibration hot rolling device, and a liquid nitrogen cooling device. The liquid nitrogen cooling device 3 is connected to the external processing device. Liquid nitrogen cylinder 1. The additive manufacturing device mainly includes additive manufacturing printed parts 9, and the ultrasonic vibration hot rolling device includes an ultrasonic generator 2, a special-shaped roller 4, and an ...

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Abstract

The invention discloses a wire arc additive manufacture (WAAM) synchronous ultrasonic hot rolling and quick cooling combined processing device and method and belongs to the technical field of 3D printing. The combined processing device mainly comprises an additive manufacturing device, an ultrasonic vibration hot rolling device and a liquid nitrogen cooling device. During the WAAM process, an ultrasonic vibration profile roller is added; according to the forming characteristics of WAAM, the roller is designed into three different forms of profile rollers, namely, the dot-matrix profile roller,the screw type profile roller and the bevel gear type profile roller. The combined processing device adopts ultrasonic impact to impact the profile roller and the liquid nitrogen cooling device. Through the processing method of the combined processing device, the internal porosity of a WAAM formed part is reduced, the influence of heat accumulation is reduced, grains are refined, and accordingly,the mechanical performance is improved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, in particular to an arc-added material synchronous ultrasonic hot rolling and rapid cooling compound processing device and method. Background technique [0002] Traditional additive manufacturing technology is assisted by computer, by means of wire feeding or powder laying, with the help of high-temperature heat source generated by high-energy beams (laser, arc, plasma, etc.), the raw materials are turned into a molten state to achieve layer-by-layer deposition. No tooling, purpose of rapid prototyping parts. Compared with other additive manufacturing technologies, arc additive materials have the advantages of low cost, high deposition efficiency, unlimited molding size, etc., and have broad application prospects in the manufacture of large-scale structural parts. However, the current arc additive manufacturing technology still has major deficiencies in the shape control and controllability ...

Claims

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Application Information

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IPC IPC(8): B23P23/00B33Y30/00B33Y10/00
CPCB23P23/00B33Y30/00B33Y10/00
Inventor 武永王晨威陈明和周李欣张志来王泽鹏高雄蔡畅
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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