WEAR AND CORROSION PROTECTION
Be it chemically cleaned or sand-blasted surfaces or the regeneration of components by means of a metal coating: there is almost no limit to how we can treat surfaces.
Protecting technical surfaces effectively against wear is a task that not only requires many years of experience, but also high-performance surface technology that can be used to solve the respective problem. We do not just use state-of-the art high-energy procedures, we also have an array of conventional procedures to hand, depending on what solution is required. We lend even heavily corroded surfaces a new shine using the right equipment.
SAND-BLASTING AND CLEANING
Rough operating environments leave their mark on even the most solid of materials causing quantifiable performance loss and impacting on regular operations. We remove rust, burnt oil or traces of scale chips on engine cases, cylinder heads and other surfaces professionally and carefully with the right method, be it powerful sand blasting or pinpoint chemical treatments.
We at Bücker + Essing can even repair serious damage to the material substance, for instance seized crankshafts, corroded sealing seats or shafts that have burst under force, by rebuilding the lost material substance. We realise this technical rebuilding by means of laser welding and various metal spray procedures, thereby bringing the rebuilt component to the necessary dimension after a final sanding stage.
Our metal spraying system automatically regenerates components, such as crankshafts up to a length of 8 metres and a comfortable lift of up to 600 mm. Once the initial alloy, as wire or powder, has been applied in a flame spray process, the workpiece is shaped to perfection in an ultra-precision sanding process.
SUBMERGED ARC WELDING
We apply the submerged arc welding method, also called UP-welding, to join parts and also to apply wear and corrosion protection layers. This procedure allows us to weld non-alloy and allowed steels and chrome-nickel steels. It is a light arc welding method in which the welding light arc burns invisibly between an endless electrode and the workpiece. The light arc and weld pool are covered by a grainy powder. The slag formed from powder protects the welding zone from the influence of the atmosphere. The high thermal effect resulting from the powder coat leads to a higher deposition rate compared to other welding methods.
LASER DEPOSIT WELDING
We use the laser deposit welding method to protect workpieces against wear and corrosion by bonding the base material with a metallic powder and thereby improving the surface structure. A 6-axle welding robot that is equipped with a laser optic generates coating tracks that are 2 to 3 mm wide and 0.4 to 2.0 mm high. The coating track is applied in spirals with an overlapping level of 40 to 60 percent.
GAS DYNAMIC COLD SPRAY (STATIONARY AND MOBILE)
Gas dynamic cold spray is ideal for repairing damaged metal components, such as dents, scratches, rust or cracks - in particular if it would be too expensive or time-consuming to replace a part. In this method, the minute metallic particles bond with a substrate when they hit a surface at supersonic speed. As the metal remains on the workpiece without fusing, this technology eliminates all the adverse effects of heat, such as loads and tension, that are found in all other thermal processes.