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TWI is at the forefront of solid phase friction welding and processing technology. Active and innovative in welding research and development since the 1960s, we are responsive to industry needs and provide consultancy services to all industry sectors.
Support for industry includes: advice on component design, process selection & quality issues, troubleshooting, feasibility & pre-production trials, application & prototype equipment development.
TWI has been responsible for many key innovations and developments in solid phase joining; Friction stir welding was invented at TWI and was rapidly applied by industry; Linear friction welding was developed into a mature joining process for turbine blades.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
If you wish to use this image each use should be accompanied by the credit line and notice, "Courtesy of TWI Ltd".
I've been liking these 3M Bristle discs. 50, 80, 120 grit. Good for flat surface conditioning, removing mill scale etc. Jody Collier at Welding Tips and Tricks turned me onto these.
©2009 Marco Acuzar, All Rights Reserved
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PLEASE VIEW ON BLACK!
I work at Doug's place collision in Edmonton and have been wanting to do this for a long time now. The lights in the shop are all off except I used three trouble lights with 100 watt bulbs and a spot light on the ground just in front of the camera. I used my Nikon D90 with a Tokina 11-16 mounted to a tripod to shoot this.
Lockheed Martin team in New Orleans, LA, completed the closeout weld of the pathfinder pressure vessel. The pathfinder welds demonstrated the tools and processes required to safely perform the 7 welds required to assemble the pressure vessel for Exploration Mission 1.
Flash welding is an electrical resistance based butt welding process used for joining components end-to-end across the full joint area. A range of section sizes and complex shapes can be joined (for example from bicycle wheel rims to railway rails). The parts to be joined are clamped and brought together slowly while a flashing voltage is applied. The process can be manual, but most welding machines are automatic or semi-automatic.
Where small contacts are made between the components, there is a high current density and the material resistance heats, melts and blows out of the joint in a shower of melted particles, giving the characteristic flashing action. This flashing progressively introduces heating and a softened zone at the component ends, while eliminating oxides and contaminants from the interface. After a pre-set 'burn-off' length of the parent material, a forge force is applied to the parts to consolidate the joint. This produces a forge butt weld with no melted metal remaining in the joint.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
If you wish to use this image each use should be accompanied by the credit line and notice, "Courtesy of TWI Ltd".
Don Fitch welding in Jonestown workshop.
These photos were were recovered from Jonestown by the FBI in the aftermath. They were released under the Freedom of Information Act and are in the public domain. Please credit The Jonestown Institute.
Welding and joining technologies are fundamental to engineering and manufacturing. Without the ability to make strong and durable connections between materials it would be impossible to produce the many different items we all rely on in our everyday lives – from the very large (buildings, pipelines, trains and bridges) to the very small (medical implants and electronic devices).
TWI has its roots in welding and joining technology and over many years has been responsible for developing and encouraging the adoption of new techniques and best practice in all industry sectors, providing its Members with the right manufacturing choices first time.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
If you wish to use this image each use should be accompanied by the credit line and notice, "Courtesy of TWI Ltd".
RS800/3 train is intended for loading of welded rail strings up to 800 meters long from a rail-welding shops and transportation of the strings to places of laying of continuous welded rail. The train is formed of 60 specialised four-axle open cars of model 13-4012 or PM820, one general-purpose open car of model 13-401 and one passenger wagon, reequipped in accordance with Project 2868.01.00.000. Manufacturer - RPM Group, Russia.
Many apartments in China have metal bars on them to keep out burglars. This man is making one of these using sunglasses for protection as he welds. I am very dubious as to whether sunglasses provide sufficient eye protection. However, things have progressed. When I first arrived, I often saw people who didn't wear any eye protection at all when welding. Photo was desaturated and a blue filter applied in Photoshop.
Since its early beginnings as the British Welding Research Association in 1946, TWI has been at the forefront of arc welding development. For instance, we developed carbon dioxide (CO2) shielding for MIG/MAG welding, making the process viable for welding carbon steel, and built the first solid-state power sources, paving the way for thyristor and inverter technology.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
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TWI's expertise in electron beam (EB) welding and processing make it a world leader and ideal partner in the development of products and processes. We can help Members to achieve cost savings and meet their quality and performance requirements.
Our scientific and engineering expertise covers all disciplines related to the generation and use of electron beams. We offer complete and impartial support at every stage of the product and process life-cycle - from feasibility studies, assembly design, equipment specification and engineering through to specialist sub-contract welding, troubleshooting, consultancy and training.
TWI has a state-of-the-art range of electron beam processing equipment and unique quality assurance diagnostic tools which are in use in our laboratory and at customer sites around the world.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
If you wish to use this image each use should be accompanied by the credit line and notice, "Courtesy of TWI Ltd".