Badanie spoin zbiorników wykonanych ze stali austenitycznej
Tests of tank welds made of austenitic steel
We have developed a procedure for the examination of welds tanks made of austenitic steel
with a thickness 5 mm. The processing of the steel and the difficulties involved are described,
here. The method is validated in accordance with
PN-EN ISO / IEC 17025, using the pattern of identical material and having a weld made in the same
way as the test tanks. The image below shows this kind of pattern.
Process of the validation:
- With the help of hole model 1, curve DAC was drown. li>
- With the help of hole model 2 situated in the center of the weld on the ground section the
impact of structural damping and noise generated during welding were examined.
- On the section of the weld with no cam-relieved face and not sanded ridge investigated the effect
of noise caused by geometry.
- Echo obtained from the edge gives the scope for interpretation in dB corresponding to the
discontinuity of the scope of the model hole with a diameter of 1.5 mm for the conventional
type of defect "infinity". li>