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Author:

Zhao, Yun (Zhao, Yun.) | Jia, Yazhou (Jia, Yazhou.) | Chen, Shujun (Chen, Shujun.) (Scholars:陈树君) | Shi, Junbiao (Shi, Junbiao.) | Li, Fang (Li, Fang.)

Indexed by:

EI Scopus SCIE

Abstract:

Wire arc additive manufacturing (WAAM) has become a promising metal 3D printing technology for fabricating large-scale and complex-shaped components. One major problem that limits the application of WAAM is the difficulty in controlling the dimensional accuracy under constantly changing interlayer temperatures. During the deposition process, as the wall height increases, the heat accumulates on the upper layers, which leads to the variation of the layer dimensions. Normal practices such as introducing idle time and actively cooling the workpiece to mitigate such problems lack efficiency and practicality, respectively. A novel process planning strategy is proposed in this paper and aims to achieve a continuous deposition process while ensuring dimensional accuracy. With the aid of a finite element model, the typical thermal transfer cycle of the workpiece was analyzed and then divided into different stages. When depositing material, the interlayer temperature of the subsequent layers can be predicted using the developed algorithm. Hence, the process parameters (e.g., wire feed speed and travel speed) can be varied according to the predicted interlayer temperature using the developed adaptive process model, and this will ensure the uniform layer dimensions. The effectiveness of the proposed technique is verified by a large-scale shell-shaped component with a total of 753 layers. The result shows that such technique succeeds in a continuous fabrication of the component with high accuracy and efficiency.

Keyword:

CMT welding Finite element Wire-arc additive manufacturing Adaptive process planning Dimensional accuracy

Author Community:

  • [ 1 ] [Zhao, Yun]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 2 ] [Jia, Yazhou]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 3 ] [Chen, Shujun]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 4 ] [Shi, Junbiao]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Fang]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 6 ] [Zhao, Yun]Beijing Univ Technol, Engn Res Ctr Adv Mfg Technol Automot Components, Minist Educ, Beijing 100124, Peoples R China
  • [ 7 ] [Jia, Yazhou]Beijing Univ Technol, Engn Res Ctr Adv Mfg Technol Automot Components, Minist Educ, Beijing 100124, Peoples R China
  • [ 8 ] [Chen, Shujun]Beijing Univ Technol, Engn Res Ctr Adv Mfg Technol Automot Components, Minist Educ, Beijing 100124, Peoples R China
  • [ 9 ] [Shi, Junbiao]Beijing Univ Technol, Engn Res Ctr Adv Mfg Technol Automot Components, Minist Educ, Beijing 100124, Peoples R China
  • [ 10 ] [Li, Fang]Beijing Univ Technol, Engn Res Ctr Adv Mfg Technol Automot Components, Minist Educ, Beijing 100124, Peoples R China

Reprint Author's Address:

  • 陈树君

    [Chen, Shujun]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

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Related Keywords:

Source :

ADDITIVE MANUFACTURING

ISSN: 2214-8604

Year: 2020

Volume: 32

1 1 . 0 0 0

JCR@2022

Cited Count:

WoS CC Cited Count: 66

SCOPUS Cited Count: 80

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

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