The visual examination is the non-destructive examination method used to determine the surface breaking imperfections of the material without damaging the material by using the method of visual observation.
The visual examination may seem like a very simple method, but it has its own fine details It is a procedure that needs to be carried out before performing another non-destructive examination method, as it provides us with the first opinions on the quality of the welding seams. The visual examination and its findings are demanded to be performed and recorded in most of the application standards prepared for other non-destructive examination methods.
• THE MAIN PRINCIPLE
It is extremely important to carry out the visual examination under sufficient level of light and at suitable angles; the parameters that affect the quality such as the surface discontinuities, structural defects, surface conditions etc. are examined with and without the help of the optic devices.
• APPLICATION & ADVANTAGES
The defects such as cracks, pores, insufficient weld penetration, notches, crater cracks, weld ridges, splashes or tempering colors etc. can be noticed with the help of the visual examination. These faults need to be determined under good light by using equipments such as magnifiers, identifiers, welder’s gauge, temperature measurement devices, videoscope, baroscope/endoscope and flashlights. The visual examination of the welds allow for the possibility of quick compensation for the errors that are not noticed during the production phase by predetermining the noticeable errors when performed before, during or after the welding process.
• OUR APPLICATION FIELDS
We perform and document our visual examination services for all metallic or non-metallic materials with the help of our supervisors who are experienced in their fields in addition to having great knowledge in the related projects, design codes, the welding procedure, the welding procedure specification (WPS), the welding procedure qualification record (WPQR), the welding standards and good workshop practices.