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2. Hardness testing systems give an economical and fast way to
test mechanical properties. Hardness testing can be done for
all materials provided the right method for testing is adopted.
Different kind of hardness testing provides useful information
for production application and also for research. Hardness
testing helps in gaining knowledge about different properties
of the materials. The hardness teasing evaluates a materials
resistance to indentation. In addition to it, hardness testing
also helps assessing resistance to abrasion. In order to
perform hardness testing on welds, weld hardness tester is
used. Hardness testing on welds carried out to assess the
strength of the weld.
3.
4. Above all, the hardness around the HAZ is of interest.
These weld hardness testers are basically used to check
various features and quality of welded material to assure
that it meets critical hardness standards. Hardness of a
metal gets influenced by the composition of the parent
material, the metallurgical consequences of the welding
procedure used, the deposited weld metal, heat
treatment, cold work of the parent metal and several
other factors. Therefore, to check the quality of the
material weld heating tester is essential. In addition to it,
there are several well-known weld heating testing
methods which include Vickers, Brinell and Rockwell,
and portable hardness testing method. Out of them
Vickers weld tests is one of the most popular one. There
are several factors which can influence the correctness
of the weld hardness test. Therefore, it is essential to
use best quality weld hardness tester. It is also essential
to take help of a professional welding inspector