Current status of research on numerical simulation of droplet transfer in CO2 gas–shielded welding

Miao, Junyan; Li, Yiwen; Ren, Bowen; Dong, Zhihai; Zou, Wenfeng; Chang, Chenhe; Chang, Yunlong

doi:10.1007/s00170-023-11870-8

Cited by 3 publications

(1 citation statement)

References 69 publications

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“…The advantage of this approach is that it is suitable to join large or thicker parts compared with UW [24][25][26]. In addition, the proposed method provides low environmental pollution and energy consumption compared with conventional arc welding [37]. Therefore, the proposed method has industrial applicability and complies with the sustainable development goals 7 and 12 [38][39][40].…”

Section: Resultsmentioning

confidence: 95%

Characterization of the Polyetheretherketone Weldment Fabricated via Rotary Friction Welding

Kuo,

Liang,

Huang

2023

Polymers

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Polyether ether ketone (PEEK) is frequently employed in biomedical engineering due to its biocompatibility. Traditionally, PEEK manufacturing methods involve injection molding, compression molding, additive manufacturing, or incremental sheet forming. Few studies have focused on rotational friction welding (RFW) with PEEK plastics. Based on years of RFW practical experience, the mechanical properties of the weldment are related to the burn-off length. However, few studies have focused on this issue. Therefore, the main objective of this study is to assess the effects of burn-off length on the mechanical properties of the welded parts using PEEK polymer rods. The welding pressure can be determined by the rotational speed according to the proposed prediction equation. The burn-off length of 1.6 mm seems to be an optimal burn-off length for RFW. For the rotational speed of 1000 rpm, the average bending strength of the welded parts was increased from 108 MPa to 160 Mpa, when the burn-off length was increased from 1 mm to 1.6 mm and the cycle time of RFW was reduced from 80 s to 76 s. A saving in the cycle time of RFW of about 5% can be obtained. The bending strength of the welded part using laser welding is lower than that using RFW, because only the peripheral material of the PEEK cylinder was melted by the laser.

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Section: Resultsmentioning

confidence: 95%

Characterization of the Polyetheretherketone Weldment Fabricated via Rotary Friction Welding

Kuo,

Liang,

Huang

2023

Polymers

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show abstract

Enhancing the bending strength of PEEK biomedical material welding parts using continuous drive friction welding with progressively increased welding area method

Kuo,

Liang,

Huang

2024

Int J Adv Manuf Technol

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Industrial workspace detection of a robotic arm using combined 2D and 3D vision processing

Schorr,

Cobilean,

Mavikumbure

et al. 2024

Int J Adv Manuf Technol

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Automation via robotic systems is becoming widely adopted across many industries, but intelligent autonomy in dynamic environments is challenging to implement due to the difficulty of 3D vision. This paper proposes a novel method that utilizes in-situ 2D image processing to simplify 3D segmentation for robotic workspace detection in industrial applications. Using a TOF sensor mounted on a robotic arm, depth images of the workspace are collected. The algorithm identifies the contour of a table, filters extraneous data points, and converts only relevant data to a 3D pointcloud. This pointcloud is processed to identify the precise location of the workspace with regard to the robot. This method has been shown to be 10% more accurate and over 10,000% faster than a human analyzing the data in a GUI-based software using an octree region-based segmentation algorithm and provides consistent results, only limited by the resolution of the camera itself.

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Current status of research on numerical simulation of droplet transfer in CO2 gas–shielded welding

Cited by 3 publications

References 69 publications

Characterization of the Polyetheretherketone Weldment Fabricated via Rotary Friction Welding

Characterization of the Polyetheretherketone Weldment Fabricated via Rotary Friction Welding

Enhancing the bending strength of PEEK biomedical material welding parts using continuous drive friction welding with progressively increased welding area method

Industrial workspace detection of a robotic arm using combined 2D and 3D vision processing

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