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Machines are available with clamping lengths from 6" up to 240" and for thicknesses from 0.005"-0.5". Accessor Aircraft Galley ies such as wire feeders and weld monitoring can all be supplied. Parts Welded Huntingdon Fusion Techniques Ltd, Stonehill, Stukeley Meadows Indus trial Estate, Huntingdon, Cambridge shire PE18 6ED. Tel: 0480 412432. Automatically FOR clamping and automatic welding of sheet metalwork used in aircraft galley manufacture, a range of machines are available from Huntingdon Fusion Techniques Ltd. These machines take away "guess work" when joining two flat sheets of metal edge to edge. Manual fit-up, tacking and then hand welding is most unsatisfactory, and can now be elimin ated with the automatic welding mach ines from Huntingdon Fusion Techniques Limited. Continuing high labour costs and the pressing need to avoid rejects are causing companies to re-evaluate their production methods and the extensive range available from Huntingdon Fusion Techniques Limited ensure that a mach ine can be supplied to suit nearly every application, whether butt welding two flat sheets, or joining edges at right angles to form a corner. Near perfect fit-up and alignment is achieved by clamping the sheet under two banks of pneumatically operated "fingers". One edge of the sheet is located over the exact centre line, by bringing the edge of the sheet up to removable gauge plates, after which one bank of clamps is lowered using a foot control and the gauge plates removed. The second edge is then positioned against the first along the weld seam line and the second bank of clamps is lowered. The clamps hold the material firmly against a mandrel which contains a stainless steel or copper insert. The insert has holes allowing purging gas to reach the underside of the weld to keep it clean and free from oxidation. When both sides are correctly and firmly clamped, a carriage mounted welding torch, is traversed along the seam at the correct speed. The carriage speed is controlled electronically to give consis tent and accurate longitudinal movement, and thus a superb weld. 12 AIRCRAFT ENGINEERING — September 1988
Aircraft Engineering and Aerospace Technology – Emerald Publishing
Published: Sep 1, 1988
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