Abstract:
The invention relates to a cutting element (10), such as used in an electric shaver. The cutting element is made from stainless steel with a hardened surface layer (14) over at least part of its surface, and is characterized, in that the cutting end face (11) of the element comprises a,surface layer of hardened steel at least over its cutting edge (12), the rest of the end face comprising the stainless steel. The cutting element has self-sharpening and wear adjustable characteristics. The invention also relates to a method for producing the cutting element, and to an electric shaver comprising at least one cutting element according to the invention.
Abstract:
A method for including a feature in an article manufactured from a maraging stainless steel comprises the steps of focusing an energy beam on the article at a temperature of at least 1000 °C in a nitrogen-free atmosphere. The beam generates intense energy and melts/vaporizes the maraging stainless steel and thus includes the feature along with austenitic edges. The article is cooled to a temperature of between 0 °C and -80 °C, in order to subject the austenitic edges to the isothermal martensitic transformation. The article is finally hardened at a temperature between 375 °C and 600 °C to cause particles in the edges to precipitate out from solution into martensitic structure.