Research Status and Development Trend of Horizontal Welding Technology

Li, Hui; Sun, Qingjie; Liu, Xi Ming; Wei, Li; Zhao, Hong; Feng, Ji

doi:10.4028/www.scientific.net/amr.753-755.407

Cited by 10 publications

(17 citation statements)

References 13 publications

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“…These methods include reducing the heat input by controlling welding parameters or using pulse welding current, counteracting the gravity by using Lorentz force or surface tension and the method using rotating arc and so on. 3,4,8,11 The published literatures of horizontal welding on aluminium alloys are very few. Horizontal welding of aluminium alloys is more difficult due to the physical and metallurgical characteristics of aluminium alloy itself.…”

Section: Introductionmentioning

confidence: 98%

“…The major problems of horizontal welding are low welding efficiency and serious welding defects such as undercut, porosity, sag and overlap. 3–7 Some researchers have studied the forming mechanism of welding defects. The buoyancy-induced flow and the sag of the molten pool are responsible for the weld asymmetry.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Horizontal welding of aluminium alloys by soft plasma arc

Zhang

Yang

Lin

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part B:

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Horizontal welding plays an important role in manufacture of large and heavy aluminium alloy structures. But there are many problems such as bad weld formation, porosity and low efficiency. Variable polarity plasma arc welding is a low-defect and high-efficiency welding technology, but it has difficulty in horizontal position. The maximum weldable thickness is less than 6.4 mm in single-pass weld. The soft plasma arc was proposed in this article. Horizontal welding of aluminium alloy plates with 8 mm thickness was realized successfully. The joint was free of defects and had excellent mechanical properties. This is a breakthrough in single-pass horizontal welding. Moreover, the characteristic of the soft plasma arc was studied in detail and the fluid flow in weld backside was observed. Finally, the forming mechanism of a stale weld pool was discussed. Results indicated that the arc pressure with the soft plasma arc was lower than that with the ordinary plasma arc. The fluid flow was asymmetric in horizontal position. The forming of a keyhole was realized by the bridging of the molten metals in the upper and lower sides. The weld pool was stable with the soft plasma arc because the maximum diameter of keyhole was bigger than that with the ordinary plasma arc.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Horizontal welding of aluminium alloys by soft plasma arc

Zhang

Yang

Lin

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

show abstract

“…The two types of secondary processing methods are conventional mechanical processing and special processing. Drilling, milling, sawing, and wire cutting are methods of traditional mechanical processing technologies that can harm materials by causing fractures, rips, and delamination [ 10 , 11 ]. Therefore, researchers developed novel processing technologies, such as laser processing, abrasive water-jet processing [ 12 ], electrical discharge machining (EDM) processing [ 13 ], ultrasonic vibration processing [ 14 ], novel processing technologies, etc.…”

Section: Introductionmentioning

confidence: 99%

Development of Laser Processing Carbon-Fiber-Reinforced Plastic

Wang

Yuan

et al. 2023

Sensors

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Due to its exceptional advantages, such as high specific strength, high specific modulus, and good fatigue resistance, carbon-fiber-reinforced plastic (CFRP) is frequently utilized in aerospace, aviation, automotive, rail transportation, and other areas. Composite components typically need to be joined and integrated. In the equipment manufacturing industry, the most used methods for processing composite components are cutting, drilling, and surface treatment. The quality of CFRP is significantly impacted by traditional mechanical processing, causing flaws like delamination, burrs, and tears. Laser processing technology has emerged as a crucial method for processing CFRP for its high quality, non-contact, simple control, and automation features. The most recent research on the laser processing of CFRP is presented in this paper, supporting scientists and engineers who work in the field in using this unconventional manufacturing technique. This paper gives a general overview of the key features of laser processing technology and the numerous machining techniques available. The concepts and benefits of laser processing technology are discussed in terms of the material properties, mode of operation, and laser characteristics, as well as the methods to achieve high efficiency, low damage, and high precision. This paper reviews the research development of laser processing of carbon-fiber-reinforced plastics, and a summary of the factors affecting the quality of CFRP laser processing. Therefore, the research content of this article can be used as a theoretical basis for reducing thermal damage and improving the processing quality of laser-processed composite materials, while, on this basis, we analyze the development trend of CFRP laser processing technology.

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“…Therefore, understanding the microbialites in ancient strata, especially the exquisitely preserved microbial fossil records and special sedimentary fabrics within them, has become the key to understanding the oceanic and atmospheric environment in geological history [6]. In recent years, unconventional oil and gas resources such as shale gas and tight oil have been gradually industrialized [7,8], and calcified microbial rocks are also an important oil-and gas-producing layer in the world, which is widely distributed, Many areas at home and abroad are dominated by carbonate reservoirs [9][10][11]. Microbial carbonate rocks are mainly developed in older strata and are often buried deep.…”

Section: Introductionmentioning

confidence: 99%

Study on Depositional Fabric and Environmental Characteristics of Dendrolites in the Cambrian Zhangxia Formation: An Example from the Houziyu Section of Ezhuang Town, Zibo, Shandong Province, Eastern China

Wang

Bai

et al. 2023

Geofluids

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The dendrolites composed of light gray massive micrite limestone occur at the top of the Cambrian Zhangxia Formation in Houziyu Section, Zibo, Shandong Province. Because it is very difficult to study the genesis of microbial rocks through “the function of diagenesis filter,” this paper analyzes its genetic mechanism by characterizing the sedimentary fabric and formation environment of dendrolites and it is of great significance to study microbial carbonate deposited in geological history in oil exploration. The Cambrian Zhangxia Formation in the Houziyu section is a marine deposit. The macroscopic shrub-like fabric of centimeter scale can be seen on the surface of the tree-shaped stone, with small biological burrows and remnants of calcareous mud components after filling. The microstructure observation shows that the main fabric of the dendrolites is a dark micrite matrix, bright calcite cement, clastic particles, and a calcified cyanobacteria biological community. Detailed supplementary information on the diversity of calcified microorganisms in dendrolites has been made through the study of various types of calcified cyanobacteria and calcified residual substances in the microbial membrane of calcified cyanobacteria in the dendrolites of the study area. It is clear that dendrolites are the product of the calcification of biofilms or microbial mats dominated by cyanobacteria. With the deepening of this kind of research, it is bound to raise the research of microbial carbonate to a new level in China and provide great help to find oil and gas resources in marine strata of microbial origin in China.

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Research Status and Development Trend of Horizontal Welding Technology

Cited by 10 publications

References 13 publications

Horizontal welding of aluminium alloys by soft plasma arc

Horizontal welding of aluminium alloys by soft plasma arc

Development of Laser Processing Carbon-Fiber-Reinforced Plastic

Study on Depositional Fabric and Environmental Characteristics of Dendrolites in the Cambrian Zhangxia Formation: An Example from the Houziyu Section of Ezhuang Town, Zibo, Shandong Province, Eastern China

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