Technoweld News

Surface contaminants, defects, and contamination arising through fabrication are all potentially detrimental to the oxide film that protects stainless steel. Corrosion can be initiated from the moment stainless steel has been damaged. Therefore, it is imperative that...

What is a welding supervisor? A certified welding supervisor is responsible for ensuring compliance of all welding activities. Some of these activities include: applicable safety requirements drawings plans weld procedures standards relevant documents.   A...

Preheating involves the application of heat on a fabrication or component before commencing the welding process. In this blog, we will discuss the basics around welding preheat.

Weld Flaws A weld flaw is any indication on a weld that can compromise the quality of the weld. A weld flaw can be accepted or rejected depending on three factors: type, size and location of the flaw/discontinuity. All welds contain features or discontinuities. It is...

There are five basic NDT methods used to detect weld defects; Visual Inspection (VT) Magnetic Particle Testing (MPT) Dye Penetrant Liquid Testing (DPI) Radiographic Testing (RT) Ultrasonic Testing (UT). UT and RT can detect both external and internal discontinuities...

Looking at improving your welding management knowledge, yet cannot seem to find the time? TWI Virtual Academy e-learning training courses are available 24/7. This means you can learn when and where you want to study around your current work hours. It also allows the...

Gas Tungsten Arc Welding (GTAW also referred to as TIG) uses a non-consumable tungsten electrode to create an arc between the electrode and the parent material. This arc creates a molten pool to which a filler wire is added. The success of TIG welding depends on a...

Gas tungsten arc welding is a process where a non-consumable tungsten electrode is used to produce the weld. Welders can encounter various issues in the GTAW process so we have compiled our best practice advice for gas tungsten arc welding in an effort to prevent or...

How does distortion occur? Welding usually involves heating of the materials at the joint to fuse them together. This heat creates expansion and contraction. If the heating and cooling is uneven, distortion can occur. This distortion comes from residual stress. There...