Ning Guo

TL;DR: In this paper, a double-sided butt welding was carried out for the joining of 5A06 aluminum alloys with thickness of 108mm, and sound welds with full penetration were produced.

TL;DR: In this article, the spatter forming mechanism of underwater flux-cored wire wet welding is characterized by using a self-developed X-ray transmission system, and three representative spatter modes, droplet repelled spatter, explosive spatter and molten pool shock spatter have been observed.

TL;DR: The 304 stainless steel coating was prepared successfully in water environment directly through an in-situ underwater laser cladding technique utilizing an underwater gas-shielding laser cladded nozzle, and the interaction mechanism of water on cladding coating formation, grain morphology and size, microstructure and corrosion performance was investigated as discussed by the authors.

TL;DR: In this paper, a rotating arc system for narrow gap horizontal welding was developed for solving the problem that the molten pool sagged due to the gravity, and the asymmetry of joint formation indicated that the heat affected zone width and microstructure in upper side were larger than that in lower side.

TL;DR: In this article, the metal transfer process of underwater flux-cored wire wet welding was successfully observed by an X-ray transmission method and the relatively large retention forces acting on the droplet induced by the electromagnetic force, vaporization force, surface tension resultant force and gas flow drag force made the transfer mode as a combination of globular repelled transfer mode and short circuit transfer mode.