Hard metal composition
AssigneeH. C. Starck GmbH
InventorsChristian Gerk, Markus Zumdick
Life of this patent
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Abstract
A process for producing a component includes providing a composition comprising hard material particles and a binder metal, and sintering the composition at a sintering temperature of from 1250° C. to 1400° C. for a period of from 3 to 15 minutes. The hard material particles comprise an inner core comprising fused tungsten carbide and an outer shell comprising tungsten carbide. The binder metal is selected from the group consisting of Co, Ni, Fe and alloys comprising at least one metal selected from Co, Ni and Fe.
Claims12
A process for producing a component, the process comprising:
- providing a composition comprising:
- hard material particles comprising an inner core comprising fused tungsten carbide and an outer shell comprising tungsten carbide, and
- a binder metal selected from the group consisting of Co, Ni, Fe;
- and
- sintering the composition at a sintering temperature of from 1250° C. to 1400° C. for a period of from 3 to 15 minutes,
- wherein, the sintering is carried out at a gas pressure of less than 10−3 bar.
A process for producing a component, the process consisting of:
- providing a composition consisting of:
- hard material particles consisting of an inner core comprising fused tungsten carbide and an outer shell comprising tungsten carbide, and
- a binder metal selected from the group consisting of Co, Ni, Fe;
- sintering the composition at a sintering temperature of from 1250° C. to 1400° C. for a period of from 3 to 15 minutes;
- and
- cooling the composition from the sintering temperature to 500° C., wherein the cooling is carried out at a cooling rate of from 30 to 70 K/min.
Dependencies are inferred from the claim text.