The weld quality improvement via laser cleaning pre-treatment for laser butt welding of the HSLA steel plates

Zhu, Lixin; Sun, Bingtao; Zheng, Li; Pan, Xiaoming; Chen, Yifeng; Cao, Yu

doi:10.1007/s40194-020-00949-5

Cited by 15 publications

(8 citation statements)

References 22 publications

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“…are installed, and they are firmly connected by fixed devices. In the galvanometer, the fixing including the shell, base, protective cover, and retainer between the galvanometer and the base is screwed, and the protective cover is fixed on the shell by screws [7]. The overall total amount of the laser cleaning head is 1.5 kg, which is also more convenient in actual use and operation, and the structure is relatively simple, it will not easily fail, and it is easy to disassemble.…”

Section: Design Of Laser Cleaning and Rust Removal Device For Isolato...mentioning

confidence: 99%

Analysis of Laser Cleaning and Rust Removal Technology for Substation Isolator Switches

Zhang

et al. 2023

J. Phys.: Conf. Ser.

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After running for a long time, isolator switches are prone to be covered with dirt and corrosion. Switch cleaning is necessary for good operation and safety. Laser cleaning technology for rust removal is emerging in recent years. This paper introduces the technical principles of laser cleaning for rust removal in detail, designs a specific process scheme and takes a steel plate sample cleaning and rust removal as a case. The application effect of laser cleaning and rust removal technology is tested and shows that the technology analyzed in this paper can play a great cleaning effect without damaging the equipment base.

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Section: Design Of Laser Cleaning and Rust Removal Device For Isolato...mentioning

confidence: 99%

Analysis of Laser Cleaning and Rust Removal Technology for Substation Isolator Switches

Zhang

et al. 2023

J. Phys.: Conf. Ser.

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“…According to above results, it can be concluded that the safe power intensity for the cleaning of ductile iron substrate is about 320 W, corresponding to 10.86 J/cm 2 (1.086 × 10 8 W/cm 2 ), which is close to the calculated result. According to literatures [10,[23][24][25], the thick surface layer can be completely removed by increasing cleaning times. us, in following experiments, average laser power is adjusted to 320 W and other parameters are kept the same with prior experiments.…”

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

“…Chemical etching [7] is not suitable for the removal of graphite particles due to their chemical stability. Recently, laser cleaning technique has been developed as a novel method to remove surface contaminants [8][9][10][11]. Comparing with traditional surface treatment techniques, laser cleaning is environmentally friendly for direct removal of contaminants without altering or affecting properties of matrix.…”

Section: Introductionmentioning

confidence: 99%

Cleaning of Graphite Particles Embedded in the Surface of Ductile Iron by Using a Novel Method

Jia

Miao

Jiang

et al. 2021

Mathematical Problems in Engineering

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Ductile iron has unique mechanical property and has been widely used in many industrial applications, e.g., engine cylinder covers, crank axles, and machine tool beds and cams. The welding performance of ductile iron is normally influenced by graphite particles in the surface of ductile iron, which needs to be removed before welding. In this article, laser cleaning technique was developed to remove graphite particles implanted in the surface of ductile iron. Laser cleaning parameters and the damage threshold value of the substrate were investigated by using a pulsed Nd: YAG laser. The optimized laser cleaning parameters were obtained to achieve high-quality cleaning effect and avoid the formation of the oxide layer. Surface morphologies and elemental compositions of specimens before and after laser cleaning were characterized by scanning electron microscopy and energy-dispersive X-ray spectroscopy. Results indicated that graphite particles implanted in the surface of ductile iron were removed completely and efficiently by using the pulsed laser without the protection of inert gas atmosphere, and surface oxidation was not observed during the laser cleaning process.

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“…As a new cleaning method, laser cleaning is also gradually used in manufacturing industry (Zhang et al, 2020). Laser cleaning is used to remove compound contaminants on the surface of tire molds (Jia et al, 2019), paint on the surface of aircraft skins (Zhu et al, 2020a(Zhu et al, , 2020b, rust on the surface of bridge steel (Park et al, 2020), stains on the surface of cultural relics (Andreotti et al, 2016), mold on the surface of paper (Rosati et al, 2014), etc. Laser cleaning has been considered as a promising method to remove surface contaminants, including oxides before welding in recent years (Wang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Welds made with 50-ns pulse width laser-cleaned Ti-3Al-2.5V alloy tubes with no defects have been achieved (Kumar et al, 2010). Laser cleaning pretreatment reduces many defects such as pores and crack inside the HSLA steel weld, thus improving the tensile properties of the weld (Zhu et al, 2020a(Zhu et al, , 2020b. After cleaning the oxide film of 5A06 aluminum alloy with 10-ns pulse width laser, it can be found that melting and solidification occurred in the irradiated area, and oxygen content was dropped significantly after laser cleaning (Wang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Effect of narrow pulse width laser cleaning on corrosion resistance of A5083-H111 aluminum alloy

Wang

et al. 2021

ACMM

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Purpose The purpose of this paper is to promote the corrosion resistance of the 5083-111H aluminum alloy by laser cleaning. Design/methodology/approach Laser with 2 ns pulse width was adopted in this project and the corrosion resistance of cleaned samples was tested by copper-accelerated salt spray (CASS). The surface morphology, elemental composition and distribution were then characterized by SEM. Moreover, surface morphology, elemental composition and distribution were also tested. Findings Results suggested a higher corrosion resistance was successfully obtained by laser cleaning. Compared with samples cleaned by 2000 grit sandpaper, mechanical cleaning resulted in a 53% larger height difference between the peak and valley. The content of the oxygen is 8.85% on the surface cleaned mechanically and the distribution is dependent on the distribution of aluminum whereas that of the laser cleaning sample is 24.41% and the distribution existed even in the Al-poor area. Originality/value In this project, the 2-ns laser cleaning was proved to have the capability to remove the oxide layer on the aluminum alloy surface while retaining an excellent corrosion resistance and smooth surface. Meanwhile, a thorough elemental distribution and smaller grain size lead to a smaller difference in elemental concentration. This retards the diffusion of oxygen into the substrate and hence increases the corrosion resistance of the surface.

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The weld quality improvement via laser cleaning pre-treatment for laser butt welding of the HSLA steel plates

Cited by 15 publications

References 22 publications

Analysis of Laser Cleaning and Rust Removal Technology for Substation Isolator Switches

Analysis of Laser Cleaning and Rust Removal Technology for Substation Isolator Switches

Cleaning of Graphite Particles Embedded in the Surface of Ductile Iron by Using a Novel Method

Effect of narrow pulse width laser cleaning on corrosion resistance of A5083-H111 aluminum alloy

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