Technoweld News

The basics of Preheat

The basics of Preheat

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.

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The Most Common Welding Defects: Causes and Remedies

The Most Common Welding Defects: Causes and Remedies

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...

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When Do You Need Non-Destructive Testing Methods?

When Do You Need Non-Destructive Testing Methods?

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...

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Flexible learning with the TWI Virtual Academy

Flexible learning with the TWI Virtual Academy

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...

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Gas Tungsten Arc Welding best practice

Gas Tungsten Arc Welding best practice

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...

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Basics of distortion in welding

Basics of distortion in welding

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...

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Gas Metal Arc Welding – Power Circuit

Gas Metal Arc Welding – Power Circuit

In part 3 of the Gas Metal Arc Welding (GMAW) blog, we will discuss the power circuit. Often people forget the basics when setting up gas metal arc welding machines, it’s these basics that create a lot of frustration with welders. Welding is complex but it doesn’t...

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