The hardness measurement. The Brinell hardness test (Part 2).
For measuring Brinell hardness test is usually used a steel ball 10 mm in diameter and a load 3000kgf. However, since the test conditions such as the hardness a...
Category: To become an Inspection Engineer
Welder Qualification Test (Part 5).
After performance of the control welded seam, the designation is applied on it and the name of the welder, position at test is entered, and also sample top tags...
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...
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 hysteresis reason of the critical current when welding on direct polarity with the coated wire from the easily ionized substances.
When welding on small currents on direct polarity in carbon dioxide the Св-08Г2С the wire with coverings from the Cs and K or Cs and Na salts taken in a certain...