Turbo-Finish Isotropic Processes and Turbine Part Life Extension
CONTACT: Dr. Michael Massarsky |TURBO-FINISH CORPORATION | michael@turbofinish.com
See also the Turbo-Abrasive Machining Website: http://dryfinish0.wixsite.com/turbo-finish/news
Turbo-Finish and premature fatigue failure prevention and life extension. The elimination of stress risers, and the generation of round edges are used to help extend component life. Rotating parts can especially benefit from the TAM process. Disks and other rotating parts can all benefit from this surface and edge conditioning. Highly finished surfaces also tend to pick up less residual contaminants from operations. and smooth isotropic surfaces generate less turbulent air flow across their surfaces. Additionally, the Turbo-Finish process imparts beneficial compressive residual stress. As critical features of the part are processed simultaneously, it can produce a stress equilibrium throughout the entire part.
One of the signature advantages of the process is that it is capable of producing peening like metal surface improvement effects, while simultaneously developing isotropic surfaces and deburring and edge-contouring sharp edged features This combination of surface effects can help extend part life on components by mitigating crack propagation and blend in the positively skewed surface profiles that result from conventional grinding or machining.
High intensity abrasive effect. Surface finish effects are generated by the high peripheral speed of rotating parts and the large number and intensity of abrasive particle to part surface contacts or impacts in a given unit of time (200-500 per mm2¬/sec. or 129, ¬000 to 323,000 per in¬¬2/sec.) These factors make this equipment capable of generating one of the highest rates of metal removal to be found in any type of free abrasive surface finishing ¬operation today.. Another very important functional aspect of Turbo-Finish technology is its ability to develop needed surface finishes in a low temperature operation, (in contrast with conventional wheel and belt grinding methods), with no phase or structural changes in the surface layer of the metal. A further feature of the process is that it produces a more random pattern of surface tracks than the linear abrasive methods such as wheel grinding or belt grinding. The non-linear finish pattern that results often enhances the surface in such a way as to make it much more receptive as a bonding substrate for subsequent coating and even plating operations.
Metal surface improvement and peening. Turbo-Finish processes have strong application on certain types of parts, which have critical metal surface improvement requirements of a functional nature. Significant metal improvement has been realized in processes develop with both abrasive and non-abrasive media material. Because of intense abrasive particle contact with exposed features, it has been observed that residual compressive stresses of up to 58-87 ksi can be created in selected critical areas. Tests performed on rotating parts for the aerospace industry that were processed with this method demonstrated a 40%-100% increase in metal fatigue resistance when tested under working conditions, when compared with parts which had been deburred and edge finished with less sophisticated manual treatment protocols. Dry finishing and the environment. Another important consideration in evaluating current mass finishing processes is their wet waste effluent stream; the treatment cost of which often approaches the cost of the actual deburring or surface conditioning operations themselves. Industry has long had strong incentive to seek out mass finishing methods that could achieve surface finish objectives in a dry abrasive operation. In contrast with other current methods, “Turbo-Finish” operations are completely dry, and produce surface effects rapidly, in single part operations, while protecting precious water resources and the environment (Some parts lend themselves to multiple spindle or multiple fixture operations when single part processing is not an important quality control objective)
About Turbo-Finish Corporation Turbo-Finish Corporation, located in Barre, Massachusetts, has made possible a new level of quality and control for manufacturers of rotating and complex parts worldwide. when in 1993 the company introduced the Turbo-Finish technology process in North America. This dry, high-speed finishing process is a new and revolutionary method to deburr, polish, radius and isotropically finish difficult-to-process critical parts and components.
Today, Turbo-Finish is a leading developer and supplier of advanced innovative dry finishing technology, for deburring, polishing, surface finishing, and edge conditioning. Turbo-Finish is also a major provider of engineered finishing solutions for challenging surface finish applications in the automotive, aerospace, and industrial component manufacturing industries worldwide. The company maintains a process laboratory facility to provide manufacturing related research and development services to assist companies in meeting their edge and surface conditioning requirements. It provides these technologies to industry in the form of finishing equipment that can be tailored to specific finishing applications. For more information on this research program and sample process service contact Dr. Michael Massarsky at 917.518.8205 or michael@turbofinish.com
See the Turbo-Finish and Turbo-Abrasive Machining Video
https://www.youtube.com/watch?v=jYxqCxMIHNo&t=52s