Results 261 to 270 of about 10,533 (306)

Study of weld formation characteristics in laser-arc hybrid welding

International Journal of Modern Physics B, 2022
The laser-arc hybrid welding was carried out on the marine-use steel, and the effects of primary parameters on weld behavior were investigated. The results show that the weld penetration increased gradually with the increase of laser power. Meanwhile, superior weld formation, penetration and reinforcement were achieved when laser and wire distance was
Hongwei Sun, Zhidong Yang, Chenfu Fang, Yuntao Chen, Yongshun Zhang, Mingxiao Shi   +5 more
openaire   +1 more source

Effect of welding speed on weld formation in electron beam welding with continuous penetration

Welding International, 2014
Investigations were carried out into the conditions of free formation of welded joints in electron beam welding in the flat position with continuous penetration, and also into the dynamic model of the discharge of liquid metal of the weld pool from the root in which the metal moves downwards at a higher speed in the initial stage; but during movement ...
Ye.V. Terentyev, V.K. Dragunov, A.P. Sliva, A.V. Scherbakov   +3 more
openaire   +1 more source

The influence of metallurgy on the formation of welding aerosols

J. Environ. Monit., 2002
Recent research has indicated that insoluble ultrafine aerosols (ie., particles whose physical diameters are less than 100 nm) may cause adverse health effects due to their small size, and that toxicological response may be more appropriately represented by particle number or particle surface area.
openaire   +2 more sources

Wave formation in explosive welding

Journal of Applied Mechanics and Technical Physics, 1971
A hypothetical analogy between wave formation in explosive welding and the Karman vortex street is analyzed, and the physical laws of the wave formation process are investigated.
S. K. Godunov, A. A. Deribas, N. S. Kozin   +2 more
openaire   +1 more source

Numerical simulation of the formation of hourglass welds during laser welding

Journal of Materials Processing Technology, 2019
Abstract The purpose of this study is to understand the effect of laser welding parameters on the formation of hourglass shaped welds in low carbon steel. Transient laser welding is modeled in ANSYS to simulate the coupled heat-transfer/fluid-flow behavior that produces corresponding hourglass shaped melt pool geometry.
Bon Seung Koo, Pornsak Thasanaraphan, Herman F. Nied   +2 more
openaire   +1 more source

The effect of additional external cooling on the formation of the weld during pipe welding.

Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information, 2023
The paper presents an analytical description of real-time thermal field arising in industrial welding of a pipe wall taking account of possible accelerated cooling of the seam after welding. Considered was the case when the surface opposite to the welding bath is cooled with a spray of air or air-water mixture under certain pressure.
A. A. Mirzoev, K. Yu. Okishev
openaire   +1 more source

Plasma formation in laser welding

Welding International, 2005
(2005). Plasma formation in laser welding. Welding International: Vol. 19, No. 10, pp. 808-813.
openaire   +1 more source

Experimental investigation of weld pool formation in electron beam welding

Vacuum, 1998
Abstract The energy transfer mechanism from an electron beam to a metal target, weld pool and keyhole of formation during electron beam welding was studied using a collector for secondary emitted particles, light photo diodes and CCD techniques. The physical processes in the welding pool and plasma cavity are discussed. It is shown that the nature of
Peter Petrov, Chavdar Georgiev, Georgy Petrov   +2 more
openaire   +1 more source

Impact welding and ripple formation

Journal of Applied Physics, 1975
Rippled metallic surfaces have been produced as a result of ballistic impact as well as the movement of high-pressure (explosive) gas over a metal plate. Such loading conditions produce a strong shock wave. Under the high pressure, metal plate surfaces are plastically deformed and sometimes are welded together. These welds are sometimes associated with
openaire   +1 more source

Wave formation in explosive welding

The Philosophical Magazine: A Journal of Theoretical Experimental and Applied Physics, 1968
Abstract The interface between explosively welded metals frequently exhibits a regular wave-like profile. The circumstances under which such a profile develops are not fully understood, and existing theories fail to predict some of its observed characteristics.
openaire   +1 more source