Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method of boronizing sintered bodies and tools for cold forming operations and hollow wear parts with boronized sintered bodies
A wear resistant, sintered body (12, 70) is made of a binderless carbide, cermet or cemented carbide, e.g., WC, W2C and/or eta-phase, with a grain size less than 6.0 μm, and less than 6% binder phase (e.g., Co-Ni-Fe). At least some working surfaces (42, 86) of the sintered body (12, 70) are surface treated (130) with a boron yielding method including applying (132) a low viscosity liquid medium having boron or aluminum content and heating (134) at 1200 °C to 1450 °C under a pressure less than atmospheric pressure or a hydrogen containing atmosphere to from a hardness gradient with an increased hardness of the treated working surfaces (42, 86) of at least 50 to 200 HV5 and favorable compressive stresses in a surface zone that gives a tougher working surfaces of the boronized sintered bodies.
Method of boronizing sintered bodies and tools for cold forming operations and hollow wear parts with boronized sintered bodies
A wear resistant, sintered body (12, 70) is made of a binderless carbide, cermet or cemented carbide, e.g., WC, W2C and/or eta-phase, with a grain size less than 6.0 μm, and less than 6% binder phase (e.g., Co-Ni-Fe). At least some working surfaces (42, 86) of the sintered body (12, 70) are surface treated (130) with a boron yielding method including applying (132) a low viscosity liquid medium having boron or aluminum content and heating (134) at 1200 °C to 1450 °C under a pressure less than atmospheric pressure or a hydrogen containing atmosphere to from a hardness gradient with an increased hardness of the treated working surfaces (42, 86) of at least 50 to 200 HV5 and favorable compressive stresses in a surface zone that gives a tougher working surfaces of the boronized sintered bodies.
Method of boronizing sintered bodies and tools for cold forming operations and hollow wear parts with boronized sintered bodies
EDERYD STEFAN SVEN-OLOV (Autor:in)
15.08.2024
Patent
Elektronische Ressource
Englisch
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