The lack of root penetration.
The lack of root penetration arises because of small current and high welding speed. The lack of root penetration is admissible defect. Repair of the lack of ro...
Author: Ivan Perfilyev
Dividing of the real welding arc column into two parts (Part 2).
The reflected plasma flow when wire welding Св-08Г2С with a diameter of 1,6 mm with a covering from К2СО3 in СО2 on the reverse polarity, promoting the arc col...
The crystal growth (Part 3).
At the large overcooling, the mechanism of the crystals growth by means of dislocations and steps is replaced normal, is not connected with the origin of new at...
Welder Qualification Test (Part 4).
For some welding technologies when changing the electrodes type provided in technical requirements it may be necessary to repeat the welder qualification test. ...
The polymorphic transformations in metals (Part 2).
The second feature of the phase transformations in solid metals is connected with smaller, than in liquid, atoms mobility. The diffusion velocity in liquid meta...