To meet growing demand for ever more precise surface finishing in aerospace, Fintek has invested in a latest generation stream finishing machine from OTEC Präzisionsfinish GmbH.

“The new SF is particularly important for our aerospace work to ensure the precise profile tolerances now demanded for turbine blades are met,” explains operations manager Jamie Phillips. “For example, the control provided by the new step motor technology allows us to repeatedly change and lock the angle of the blades as they pass through the process media to carefully manage the finishing effect on vital leading and trailing edges.”
With six other stream finishing machines, along with drag finishing and centrifugal finishing systems, the AS9100 and ISO9001 accredited company says it has the capacity, depth of knowledge and expertise to provide a comprehensive range of surface finishing services. These range from deburring and mirror-finish polishing to smoothing and polishing, as well as important edge rounding. For aerospace, this offer covers not just turbine blades but complete blisks, gear wheels, cutting tools, fasteners and extremely thin parts.
“Problem solving is integral to our service,” says Phillips. “We work closely with aerospace customer engineers, including in research and development, to create better parts by applying surface finishing techniques that meet their commercial objectives. Often we’re able to achieve a quality of surface finish in minutes [sometimes seconds] that can’t be matched by hand or other traditional methods. Furthermore, processes are precisely repeatable to ensure total quality consistency and confidence to achieve surfaces with values down to Ra 0.01.”
For aerospace companies requiring on-site processing, Fintek is the exclusive UK agent for OTEC, and can supply and install machines.
For further information www.fintek.co.uk

Guyson International has created a universal automated blast system that is based on the company’s existing Multiblast RSB.

The latest system incorporates roof-mounted servo drives to provide saturation coverage from the attached blast guns across the entire rotating table, thus delivering full blast coverage to all components. Guyson’s universal automated blast system is aimed at subcontractors or manufacturers processing a varied component mix of geometric sizes and shapes with a requirement for cosmetic finishing, shot peening, general deburring, paint removal or aerospace MRO cleaning.
Featuring a standard blast chamber dimension of 1500 mm (wide) by 1500 mm (deep) by 900 mm (high), the cabinet is fitted with a large front-opening door, allowing easy parts-loading access to a 1 m wide, painted steel turntable (polyurethane version available).
The Multiblast RSB comes with two Guyson model 900 guns as standard, each with its own individual pressure regulator, allowing optimum blast coverage of components on the table. This number can be increased to a maximum of eight guns if the blast application necessitates. A blast-nozzle holding clamp option enables the guns to be swapped out for cleaning, while retaining gun position, stand-off distance and angle. Automated post-blasting air wash is also provided, as standard, to remove any blast media residues and leave the parts clean for any subsequent processing.
For optimum component blast coverage, the machine can be provided with either horizontal or vertical servo-driven gun drives. Both offer 500 mm of traverse, either across the turntable for full saturation coverage or vertically stroking (up and down) taller components to provide uniform coverage as the part rotates on the turntable.
For further information www.guyson.co.uk