Keighley Labs Test & Inspection Service Ensures Welds Are Fit

Publié le par brightshine

The team is familiar with testing weld coupons only millimetres thick in titanium, aluminium, nickel and cobalt alloys and other exotic metals for aerospace fabricators, as well as carbon steel and stainless steel test plates several inches thick for commercial welders and manufacturers. It covers all forms of welded joint, including butt or groove welds,This curving machine is for producing aluminum shutter door & window slats with foam-filled, fillets,GCC offers a complete selection of laser marking machine and marker for your cutting needs. lap, edge and tee joints, corners and cruciform, both plate-to-plate and tube-to-tube in similar or dissimilar materials, which are produced using all manual and automated welding methods, from stick and oxy-acetylene techniques,Fine Cut offers laser marking and purlin machine services in the UK. to TIG, MIG, MAG and plasma arc, even brazing and soldering.

Keighley Labs employs a complete array of test and inspection procedures to qualify welding procedures, welding operators and welding processes, by examining completed welds to establish their quality, integrity and compliance with specifications. Non-destructive testing techniques extend from visual inspection to check for surface defects and weld sizes, through to magnetic particle, liquid penetrant and ultrasonic examinations for detecting surface and near-surface discontinuities invisible to the naked eye, locating weld leaks and any internal flaws, in addition to meeting specific codes and specifications. Radiographic inspection for determining the internal soundness of welds is also provided on a sub-contract basis.

Weld coupons are also examined for soundness, strength and toughness using a range of mechanical testing equipment in Keighley Labs' on-site Test House, which includes a dedicated CNC machine for producing weld test plates from customer-submitted samples. Options here include Brinell, Rockwell, Vickers and Knoop hardness testing, for providing information about metallurgical changes caused by welding, weld bending for evaluating the ductility and soundness of welded joints, Charpy and Izod impact testing for measuring resistance to mechanical shock, and digital equipment for fatigue life testing.

In its newly-enlarged Optical Suite, Keighley Labs offers metallographic inspection of sections of welded joints, at macro levels up to 50x magnification and micro examinations up to 1000x, employing powerful stereo microscopes. Metallurgy is used to check the extent of the heat affected zone and any weld defects such as cracks, pores, swivels and lack of fusion. Meticulous surface preparation of samples is essential for revealing details of the microstructure and the suite boasts semi-automated precision cutting, grinding and polishing equipment.

With customers as far afield as South Africa and the Mediterranean, as well as closer to hand amongst the North West Aerospace Alliance, of which it is a member, Keighley Labs enjoys strong demand for its weld test and inspection services, with a track record of repeat business.

"We have a good reputation within the aerospace industry and amongst commercial fabricators and, given the increasing need to comply with welding procedures and employ skilled welding operators, it is an expert service that many customers and their clients value," says Keighley Labs' Peter Hanson. "Being independent, we have no vested interest in any particular welded joint, we're just concerned with whether it passes or fails. If it fails, we can identify precisely why it did so and offer remedial advice for meeting the required specification."

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