| 摘要 |
<p>The present invention relates to a method for the production of cemented carbide based hard metal parts comprising hard constituents in a binder phase by using powder injection moulding or extrusion of a mixture of hard constituents and binder phase in organic binders having a melting point, the method comprising the steps of: -mixing powders of hard constituents and binder phase to form a mixture, -heating said mixture of hard constituents and binder phase to a temperature, -when the temperature of the mixture of hard constituents and binder phase is above the melting point of the organic binders, adding the organic binders in melted form, making sure that the temperature does not fall below the melting point of the organic binders, -forming the parts by powder injection moulding or extrusion, -removing the organic binders from the obtained parts by a debinding step and -sintering the parts.</p> |
