Subscribe to our newsletter to receive the latest news and events from TWI:

Subscribe >
Skip to content

Job Knowledge

   
Helpful articles with information about welding processes.

Refill Friction Stir Spot Welding

Friction stir spot welding (FSSW) is a solid-state joining process, which is a derivative of friction stir welding (FSW); however,...

Wed, 27 June 2018

Robotic Arc Welding

The development of automated arc welding solutions continues to be driven by the requirement for higher product quality, productivity and...

Mon, 19 October 2015

Rotary Friction Welding

Rotary friction welding (RFW) is a solid-state joining process which works by rotating one workpiece relative to another while under...

Fri, 17 November 2017

Structural Steel, CE Marking and ISO 3834

The Construction Products Regulations (CPR) requires structural steel work that is placed on the market to be CE marked. The...

Tue, 20 October 2015

Submerged Arc Welding Consumables - Part 1

The submerged arc process is somewhat unusual in that the welding consumables, unlike the other fluxed processes of MMA or...

Tue, 08 March 2016

Submerged Arc Welding Consumables - Part 2

An article on submerged arc welding consumables - Part 2 specifications

Tue, 20 October 2015

Submerged Arc Welding Consumables - Part 3

As with the BS EN specifications for submerged arc welding consumables, the American Welding Society (AWS) system also uses a...

Fri, 18 December 2015

Submerged Arc Welding Process

The principles of the submerged arc welding process are outlined including process features and characteristics, process variants (e.g. multiple wire),...

Fri, 30 September 2016

The Manual Metal Arc Process (MMA Welding)

Principles of the MMA (SMA) welding method are outlined including characteristics of the types of electrodes and electrode coatings, suitable...

Fri, 30 September 2016

Thermal Gouging

The principles of thermal gouging are outlined including the cutting processes that can be used, materials suitable for gouging, applications...

Fri, 30 September 2016

Tungsten Inert Gas (GTA or TIG) Welding

The principles of TIG welding are outlined including process characteristics, power sources, arc starting, electrodes, shielding gases and applications....

Fri, 30 September 2016

Ultrasonic Examination Part 1

The basic principles of using ultrasonic waves to detect defects are explained

Mon, 19 October 2015

Ultrasonic Examination: Part 2

The importance of equipment calibration is highlighted. The disadvantages of manual scanning in terms of accuracy are discussed.

Mon, 19 October 2015

Ultrasonic Welding of Injection Moulded Components - Part 1 - Process and Equipment

The process and equipment used for ultrasonic welding of plastic components is described

Wed, 22 March 2017

Ultrasonic Welding of Injection Moulded Components - Part 2 - Component Design and Weld Parameters

Discusses joint preparation for projection and shear joints, other aspects of component design for weldability, and selection of amplitude and...

Thu, 23 March 2017

Ultrasonics Examination: Part 3

Describes phased array and Time of Flight Diffraction (TOFD) as ultrasonic technologies with the ability to detect far...

Mon, 19 October 2015

Vision System for Monitoring and Control of Arc Welding

Vision systems can be used for real-time monitoring, adaptive control and defect detection in arc welding processes.

Wed, 25 May 2016

War at Sea: The Battle Against Corrosion and Fatigue

Corrosion is the bane of any offshore industry. This problem is exacerbated by the fatigue caused by waves, which, in...

Fri, 21 July 2017

Weld Defects / Imperfections - Incomplete Root Fusion or Penetration

Types of weld imperfections are introduced and the nature, causes, avoidance and repair of lack of penetration at the weld...

Mon, 19 October 2015

Weld Defects / Imperfections in Welds - Lack of Sidewall and Inter-run Fusion

The characteristic features and principal causes of lack of sidewall and inter-run fusion are described. General guidelines on best practice...

Mon, 19 October 2015

For more information please email:


contactus@twi.co.uk