Observed quality characteristics are top kerf width, heat affected zone
(HAZ), surface roughness and dross formed at bottom side.
A wider heat affected zone
has been associated with a more random-fiber orientation in the weld melt-film, increasing the probability of fiber orientation perpendicular to the weld plane, and also diffusion of fibers across the weld interface (73).
Melting zone formed by Fe3C M and Ar, and the heat affected zone
formed by graphite, M and Ar composition;
In this case, the impact toughness of the metal in the heat affected zone
was more than 10% higher than the value in our the zones.
By the late 1990's it was becoming better understood that creep damage in seam welds did not initiate as distinctive crack-like flaws, but rather as an accumulation of microstructural damage evidenced by "cavitation" development around inclusions and carbides along the grain boundaries in the heat affected zone
or fusion zone of the seam weld (depending on whether the structure was normalized and tempered or subcritically annealed after welding).
Minimized distortion, heat affected zone
compared to spray transfer
If the heat affected zone
is too large, the question of insufficient pressure applied during the seal phase is considered with similar poor weld results.
The company said the reduced heat affected zone
of MagneGas compared to acetylene makes it safer for human life during extractions, which is a critical benefit of MagneGas fuel for these markets.
The metallurgy of the 7025 Al-alloy is studied in the fusion zone, partially melted zone and the heat affected zone
Because the material is specifically developed to be heat sensitive and dissolve in the body over the period of a few weeks, the heat affected zone
from traditional laser processing is too large.
The heat affected zone
was then cooled down under room temperature.
The MicroMaster features patented ultra-short pulse length excimer-laser technology for cuts, holes, and patterns with sub-micron precision, minimal debris, and minimal heat affected zone