An outflow of energy from the weld area was prevented by the lack of a squeeze flow, such that the temperature in the weld zone
increased up to temperatures above the crystallite melting temperature, shown in Figure 8, in contrast to non-cross-linked polyamide, shown in Figure 6.
Once the vibratory motion stops, the planar orientation of the film may be frozen in place, creating stress concentrations or planes of weakness in the weld zone
Failure of stainless steel particularly on weld zone
is believed to be due to inter-dendritic attack of inter-dendritic structure .
This suggests either a difference in the microstructure, the geometry of any pores present or the number of pores in the original cast structure of the metal in the weld zone
Innovations in the areas of feedback control, specific current and waveform shape, and highly responsive welding power sources have provided the GMAW process with an ability to adapt to irregularities in the weld zone
and have made it possible to effectively regulate key parameters such as current, voltage, and flow gas, thus enabling optimization of process performance.
The microstructure created in the steel due to welding by induction welded seams is annealed and normalized to ensure uniform structure is achieved in the heat-affected and weld zone
Magnified images of the weld zone
provide image quality as clear or clearer than that seen through a welder's helmet and facilitate real-time detection of welding defects.
Higher magnification micrographs of this weld zone
revealed elongated grains pointing upwards at the vicinity of the SZ, see Figure 4a.
This creates suitable conditions for producing joints in low-weldability medium-carbon steels without cracks in the weld zone
The HAZ size, form and proportions of weld influenced the amount of sailed heat to the weld zone
, input energy.
Unit has a hot tip that melts the parent plastic material and injects a high-pressure shot of molten plastic into the weld zone
Friction welding is an excellent welding process; however, it is very difficult to reinforce the weld zone
, which is inherently more susceptible to cracking.