Erodex Lapp Blaster provides ‘clean and peen’ solution
The Erodex Lapp Blaster is said to be a versatile surface preparation and finishing cabinet. It can be specified in a number of sizes and formats, although the two-stage Lapp Blaster 6040 Duo fitted to the company's demonstration vehicle is predicted to be the most popular, along with the slightly larger 7050 Duo.
Unlike existing sand and bead blasting cabinets that simply abrade the surface, Lapp Baster has been designed to remove the recast layer created by the EDM process, and to shot peen the annealed heat affected zone located just below. By cleaning and peening, it removes the re-deposited molten metal particles from the surface of the workpiece, and peens the remaining surface.
In essence, Lapp Blaster compresses the surface to increase crack resistance and improve surface finish, with 0.3 micron Ra achieved within a few seconds of processing, says Erodex.
