Abstract:
The present invention relates to a tool comprising a cemented carbide part and a steel part joined by brazing where the steel part has an average hardness of between 390 and 510 HV30. The braze joint comprises Ti and a TiC layer with a thickness of between 0.03 and 5 µm adjoining to the cemented carbide part. The tool provides a strong braze joint and a steel part that have an even hardness.
Abstract:
A metal matrix composite to high tolerate wear as a property has been produced by infiltration casting of a Fe Alloy and a spinel ceramic by using a material design for i) metal transport phenomena conditions, ii) predefined wetting and capillarity and iii) processing child insert/mother casting methodology to produce a final casting in shape and form to meet the needs of a mining end user.
Abstract:
The present invention relates to a cutting tool comprising a cemented carbide substrate wherein the cemented carbide consists of hard constituents in a metallic binder. The hard constituents comprise WC and the WC content in the cemented carbide is 80-93 wt%. The cemented carbide comprise Ni and Al, and has a Ni content of 3-13 wt% and a weight ratio of Co / Ni 5000 HV100*N/µm.
Abstract:
The present invention relates to a cutting tool comprising a substrate of cemented carbide, said cemented carbide comprices hard constituents in a metallic binder. The hard constituents comprise WC and the WC content in the cemented carbide is 80-96 wt%. The cemented carbide has Ni content of 2.5-13 wt% and a weight ratio of Fe / Ni 2000 HV100*N/µm.
Abstract:
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.
Abstract:
The present invention relates to a coated cutting tool comprising a substrate of cemented carbide and a coating, the cemented carbide comprising WC and a binder phase comprising one or more of Co, Fe and Ni, the carbon content in the cemented carbide is a substoichiometric carbon content SCC wherein -0.13 wt%≤SCC
Abstract:
L'invention porte sur un procédé de traitement d'un matériau composite superdur (21) comprenant une microstructure polycristalline et un liant, ledit procédé comprenant les étapes suivantes : - mettre (200) une surface dudit matériau composite superdur (21) en contact avec un matériau absorbant (30), et - appliquer (300) un courant électrique sur le matériau composite superdur (21), entraînant un déplacement du liant depuis le matériau composite superdur (21) vers le matériau absorbant (30) de façon à créer un gradient continu (221) de teneur en liant au sein du matériau composite superdur (21).
Abstract:
A sintered material for use in an internal combustion engine, such as a valve seat insert, is provided. The material includes a pressed base powder metal mixture and a Cu-rich phase infiltrated in pores of the base powder metal mixture. The base powder metal mixture includes at least one of Mo and W, and at least one additive, such as B, N, and/or C. The amount of the Mo and/or W is 50 wt. % to 85 wt. %, based on the total weight of the material. The at least one additive is present in a total amount of 0.2 to 25 wt. %, based on the total weight of the material, and the Cu-rich phase is present in an amount of 15 wt. % to 50 wt. %, based on the total weight of the material. The material also has a thermal conductivity of at least 70 W/mK.
Abstract:
A method of forming a super hard polycrystalline construction comprises forming a pre-composite assembly comprising a skeleton formed of a first material, and a region of super hard particles or grains, the skeleton having one or more voids therein, the super hard particles being located in one or more of said voids in the skeleton and treating the pre-composite assembly in the presence of a catalyst/solvent material for the super hard particles or grains at an ultra-high pressure of around 5 GPa or greater and a temperature to sinter together the super hard particles or grains to form a body of polycrystalline super hard material comprising a first region of super hard particles or grains, and an interpenetrating second region of a second material, the second material forming a coating on at least a portion of the first region, the second material comprising any one or more of the first material, or an oxide, a carbide, or a nitride of the first material.
Abstract:
A composite sintered powder metal article including a first region including a cemented hard particle material such as, for example, cemented carbide. The article includes a second region including: a metallic material selected from a steel, nickel, a nickel alloy, titanium, a titanium alloy, molybdenum, a molybdenum alloy, cobalt, a cobalt alloy, tungsten, a tungsten alloy; and from 0 up to 30 percent by volume of hard particles. The first region is metallurgically bonded to the second region, and each of the first region and the second region has a thickness of greater than 100 microns. The second region comprises at least one mechanical attachment feature so that the composite sintered powder metal article can be attached to another article. The article comprises one of an earth boring article, a metalcutting tool, a metalforming tool, a woodworking tool, and a wear article.