| 主权项 |
1. A method of producing a sintered cutting body comprising the steps of:
providing a body of cermet or cemented carbide comprising carbon and binder metal; providing a sintering device for sintering the body; sintering the body in a sintering process by means of the sintering device; providing the sintering process with a time range, the time range being a heating time range where temperature at a certain moment in time is either constant or rising; providing a subsequent cooling time range of the sintering process where a cooling temperature in the cooling time range is arranged at a certain moment in time to be constant or decreasing; and providing an atmosphere comprising at least one inert gas at a pressure, at least during a first part time range of the cooling time range in order to provide decarburizing conditions, wherein a pressure in the sintering device during the first part time range fulfills the condition 100 Pa≦P≦15000 Pa, wherein at least during a second part time range, subsequent to the first part time range, a partial pressure of the binder metal is maintained higher for a side or part of a side of the body and wherein the other part of the side or other sides of the body has/have a lower partial pressure of the binder metal, such that the binder metal is evaporated, thus providing a side or part of a side with binder metal capping, and other part of a side or other sides with essentially no binder metal capping. |
