J.S. Sun
,
J.Q. Gao
,
Y. Feng
,
Y.W. Luan
金属学报(英文版)
A mathematical model describing the behavior of metal inert gas (MIG) welding is
formulated in the paper. By means of numerical simulation, the influence of surface-active elements on fluid flow of MIG weldpool is studied. The calculation results
show that by adding surface-active elements, the fluid flow behavior is drastically
changed and the flow fluid flows from lower to upper in vertical direction at the rear
of weldpool (w>0). The physical phenomenon is explained from the viewpoint of fluid
flow behavior of weldpool that the properties of weld metal is greatly improved and
the content of diffused hydrogen is reduced, thus providing a basis for developing new
welding materials.
关键词:
surface-active elements
,
null
,
null
