Weld Leak testing

leak testingCarrs Welding are well known for their laser welding services, but increasingly Carrs have to test the jobs that they are welding. Carrs have 5 production jobs that they helium test, for example, an Inconel core which has dozens of welds, has to be tested at 3 stages during the assembly and welding process. I.e. some of the initial welds are covered by sequential welds and so we have to test the welds for quality before we can proceeded to the next weld.

Helium testing works on the idea that Helium is a tiny element and if there is a hole in a welded joint, it is the best gas to squeeze through and detect the leak. Generally Carrs pump the air out of the enclosed space that has been created by welding 2 or more parts together. When a vacuum has been created in the body of the job, the analysers is switched on. This looks at the rarefied atmosphere inside the assembly. Any Helium inside the job can be easily detected and quantified. For example; welding a connector into an assembly plate or casting.

Once evacuated the helium is introduced on the outside of the welded area with a small jet or needle. If a leak is detected the analyser will show an increased level of helium inside the job. The screen shows a long line and the machine beeps. This way a hole is pinpointed and a repair of the leak can be instigated. Once repaired the assembly is retested until no leaks are detected.

Helium leak testing is part of the welding process quality valuation and is not offered as a service on its own.

Laser Welding 3 Peak Challenge in June

Laser welding

Carrs swap their activities from Laser Welding to the ‘Three Peaks Challenge’ which involves climbing the three highest peaks of Scotland, England and Wales. Alistair, John and Tom will attempt to cover the total walking distance of 23 miles (37km), a total ascent of 3064 metres (10,052ft) – and a driving distance of 462 miles. […]

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Carrs expanding business

Laser welding

Due to the expansion of the business Carrs Welding Technologies are taking over the adjoining unit. This enables the company to utilise the extra space for their additional new Lasers. Carrs will occupy both Units 2 and 3 on Henson Way Industrial Estate, Kettering.  

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Carrs go large with 6 kWatt Laser Welder.

Aluminium welding, Laser welding, News

  Carrs have now gone to the next stage with their capital spend on the latest Trumpf 6 Kwatts welding laser. The Disk laser provides important back up for the 4Kwatts disk already installed at Carrs and being in different factories allows Carrs to have crucial production cover for all their product lines.     The […]

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