Spot welding is a common technique for joining two metal parts together. This process is often used in the automotive industry for bodywork and chassis parts.
These welds are made using two electrodes in contact with the parts to be joined. A powerful electrical signal passes through them, melting the metal. The metal then solidifies into a round, doughnut-like joint.
If the weld is not well made, there may be a lack of fusion between the two parts, or the weld surface may be too small. In these cases, the weld will not be mechanically strong enough. It is therefore important to check the integrity of the welds at each point.
These types of indications cannot be detected by optical inspection, and destructive testing is not very effective and is limited to a few parts. However, with the right equipment and technique, ultrasonic non-destructive testing is fast and effective.
Olympus recommends using an Epoch650 and a high-frequency probe.
The Epoch650 is designed to meet the requirements of standard EN12668.
Learn more: www.olympus-ims.com/fr