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Job Knowledge

Helpful articles with information about welding processes.

Duplex Stainless Steel - Part 2

The previous article highlighted some of the problems encountered when welding duplex and superduplex stainless steels, in particular the need...

Tue, 20 October 2015

Eddy Current Testing

An overview of eddy current testing is given,

Tue, 20 October 2015

Electrical Hazards - Power Source and Installation

Article gives the principal health and safety considerations to ensure safe welding practices and prevent accidents, particularly on power source...

Mon, 19 October 2015

Equipment for Manual Metal Arc (MMA or SMA) Welding

The power source, electrode holder, cables, protective clothing and fume extraction equipment required for safe MMA welding are described. Care...

Mon, 19 October 2015

Equipment for MIG Welding

The power source, wire feed system, conduit, gun and protective equipment for MIG/MAG welding are described. Current and voltage settings...

Mon, 19 October 2015

Equipment for Oxyacetylene Welding

Gas welding torch, hoses, gas regulators and flame traps are described. Differences between oxygen and acetylene cylinders are listed. Typical...

Mon, 19 October 2015

Equipment for Plasma Welding

Equipment is described for microplasma, medium current plasma and keyhole plasma welding including power source, torch, nozzle, electrode, plasma and...

Mon, 19 October 2015

Equipment for Submerged Arc Welding

The power sources and welding guns suitable for submerged arc welding are described, including manual and mechanised (single and twin...

Mon, 19 October 2015

Equipment for Tungsten Inert Gas (TIG, GTA) Welding

Power sources, torches, backing systems and protective clothing for TIG welding are described. (May 1996)

Mon, 19 October 2015

EuP Directive and Welding Equipment Energy Consumption

This job knowledge article is focused only on power supplies and major arc welding processes and is based on a...

Thu, 09 March 2017

Extrusion Welding of Thermoplastics

Equipment, procedures and applications for extrusion welding are described.

Mon, 19 October 2015

Fabrication Requirements of BS EN 1090 Part 2

Now that CE marking of structural steelwork and aluminium structures is mandatory it may be an appropriate time to look...

Mon, 19 October 2015

Fatigue Testing

A brief outline of fatigue testing, its origins and purpose is given. Details of the occurrence of fatigue failure, the...

Mon, 19 October 2015

Fatigue Testing - Part 2

Second part of article containing general information on fatigue testing of steels. Details are given of the effect of fluctuations...

Mon, 19 October 2015

Fatigue Testing - Part 3

Third part of article containing general information on fatigue testing of steels. Details are given of relevant British Standards...

Mon, 19 October 2015

Fillet Welded Joints - A Review of the Practicalities

Looks at common joint designs and features and discusses everyday practical problems of achieving correct weld size and shape. Spotlights...

Thu, 23 March 2017

Friction Stir Welding

Friction stir welding (FSW) is a solid-state joining process developed at TWI Ltd in 1991. FSW works by using a...

Fri, 17 November 2017

Friction Welding of Plastics

Processes suitable for joining thermoplastics are described: linear friction welding (vibration welding), rotational friction welding (spin welding), orbital welding, angular...

Mon, 19 October 2015

Full-Scale Fatigue Testing using the Resonance Method

Resonance fatigue testing involves exciting a test specimen close to its first mode of vibration by applying a rotating radial...

Fri, 01 July 2016

Hardness Testing Part 1

A description of the purpose of hardness tests and details of the use of the Brinell and Vickers tests. Notes...

Mon, 19 October 2015

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