PRODUCTS & EQUIPMENT
Advanced aerospace heat treatment vacuum brazing and surface coatings
A
erospace metal heat treatment and hard micro-fine coatings specialist, the Wallwork
Group, return to Farnborough with a more extensive portfolio of services having invested an additional £2.5 million since the previous exhibition. New buildings, plant, training and research means the company is providing more advanced and enhanced services to meet the specific needs of the aerospace industry. These developments are underpinned by extending aerospace approvals for processes at all three UK Wallwork sites in Manchester, Cambridge and Birmingham. Nation-wide coverage and high speed turnaround to meet the aerospace industry’s high quality, lean and just-in-time requirements is assured. Vacuum brazing has a special role in aerospace for the fabrication of complex components. Responding to this, Wallwork has doubled capacity at the Cambridge site and
Gas tightness of ring seals within aero engines is crucial. High magnification images enable the effectiveness of vacuum brazing of the seals to be verified.
created a completely new vacuum brazing unit at the Manchester site. The Cambridge factory footprint has been increased by 25 per cent
to allow for new services such as mechanical testing and to create space for future expansion. The range of heat treatment
Nitron Flight hard coatings from Wallwork reduce wear, erosion and encrustation on engine compressor blades prolonging performance, saving fuel and extending service intervals.
12 IMT June 2016
www.internationalmetaltube.com
(HT) services has been expanded. Aluminium HT was introduced just before the 2014 Farnborough Airshow and is now augmented by new services to heat treat magnesium which is a more complex process. Nitriding services have also been greatly expanded. Low temperature nitriding processing are now available in addition to traditional thermal techniques, with the option that nitride product may also be treated by PVD coating to further enhance surface properties. Nitron Flight is a Wallwork patent process that improves aero-engine performance, giving greater resistance to aerofoil erosion and encrustation to extend the service interval on these key components. Similarly Nitron O is a process that prolongs the life of titanium bearings by hardening the surface and reducing surface friction.
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