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US 12,350,752 B2Granted
Method of making a tool comprising carbide and steel by brazing
AssigneeAB Sandvik Coromant
InventorsTim Ulitzka, Wolfgang Tillmann, Leif Dahl
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Abstract
A tool includes a cemented carbide part and a maraging steel part, wherein the two parts are joined by brazing. The cemented carbide part has a hard phase embedded in a metallic binder phase matrix. The maraging steel part has a hardness of between 350 and 600 HV1 with a standard deviation between 0 and 20 HV1. A method of making such tool is also provided.
Claims13
A tool comprising:
- a cemented carbide part, wherein the cemented carbide part has a hard phase embedded in a metallic binder phase matrix, wherein at least 50 wt % of the hard phase is WC;
- a maraging steel part with a hardness of between 350 and 600 HV1 with a standard deviation between 0 and 20 HV1, wherein the maraging steel part has a hardness of between 400 and 460 HV1 with a standard deviation of between 0 and 14 HV1;
- and
- a braze joint joining said cemented carbide part and said maraging steel part, wherein said braze joint includes Ti, and wherein said braze joint includes a TiC layer with a thickness of between 0.03 and 5 μm adjoining to the cemented carbide part.
1 more element
Dependencies are inferred from the claim text.