Abstract: A process for the surface treatment of a metal part comprises: exposing a surface (1) of the metal part to a stream of substantially spherical particles, so that any portion of said surface receives said particles along several primary incidences, the primary incidences of the particles on a portion of the surface being essentially distributed in a cone or a conical film which has an outer half apex angle between 10° and 45°, until a surface layer (3) of nanostructures having an average thickness of several tens of microns is obtained, the particles having a diameter of less than 2 mm and greater than 0.1 mm and being projected at a speed between 40 m/s and 100 m/s. A thermochemical treatment is then applied, in particular a low-temperature treatment of the nitriding type or a high-temperature treatment of the low-pressure carbonitriding type.
Type:
Grant
Filed:
June 18, 2012
Date of Patent:
July 5, 2016
Assignee:
WINOA
Inventors:
Tony Prezeau, Teddy Muller, Michel Baron, Joan Samuel, Emmanuel Dransart
Abstract: A process for the surface treatment of a metal part comprises exposing a surface of the metal part to a stream of substantially spherical particles, so that any portion of said surface receives said particles along several primary incidences, the primary incidences of the particles on a portion of the surface being essentially distributed in a cone or a conical film which has an outer half apex angle between 10° and 45°, until a surface layer of nanostructures having in particular an average thickness of greater than 50 ?m is obtained, the particles having a diameter of less than 2 mm and greater than 0.1 mm and being projected at a speed between 40 m/s and 100 m/s.
Type:
Application
Filed:
December 29, 2011
Publication date:
October 29, 2015
Applicant:
WINOA
Inventors:
Tony Prezeau, Teddy Muller, Joan Samuel
Abstract: A process for the surface treatment of a metal part comprises: exposing a surface (1) of the metal part to a stream of substantially spherical particles, so that any portion of said surface receives said particles along several primary incidences, the primary incidences of the particles on a portion of the surface being essentially distributed in a cone or a conical film which has an outer half apex angle between 10° and 45°, until a surface layer (3) of nanostructures having an average thickness of several tens of microns is obtained, the particles having a diameter of less than 2 mm and greater than 0.1 mm and being projected at a speed between 40 m/s and 100 m/s. A thermochemical treatment is then applied, in particular a low-temperature treatment of the nitriding type or a high-temperature treatment of the low-pressure carbonitriding type.
Type:
Application
Filed:
June 18, 2012
Publication date:
June 19, 2014
Applicant:
WINOA
Inventors:
Tony Prezeau, Teddy Muller, Michel Baron, Joan Samuel, Emmanuel Dransart