The hardness measurement. The Brinell’s method (Part 1).
Hardness is the metal’s ability to resist the introduction or breakdown. The metal’s hardness gives an idea of its tensile strength. Therefore, the hardne...
Author: Ivan Perfilyev
The cast metal macrostructure.
The dendrite structure and the crystallization zones of cast metal can be detected by the deep etching of macrosection in 15% water solution of ammonium persulp...
Dividing of the real welding arc column into two parts (Part 1).
In the real welding arches the arch column is divided into two parts, significantly differing among themselves under the terms of existence: the arch column whi...
Welder Qualification Test (Part 3).
AWS come forward with the proposal to use of the sheets additional configuration for the tests intended for weld test in horizontal position. For this purpose, ...
Macroanalysis by the fractures’ type (Part 2).
As mentioned earlier in Part 1 of this article, for the uniform determination of destruction nature, the successful prevention of premature and catastrophic des...