Carbide Preform

Machining becomes difficult to a sintered carbide part as carbide gets its hardness once sintered. However, to machine a green compact is much easier. ZZSINO produces irregular-shaped solid rods such as T-slot rod，rods with centers, step blank and countersink blank by pre-sintering the green compact at a low temperature in order to get a little bit hardness for easy handling during preforming, machine it into the shape of final tool and then sinter. Common operations include countersink holes, coolant holes, flutes, slots etc. By means of performing, grinding stock can be minimized, efficiency can be enhanced and production cost can be substantially reduced. Preform process is initially and mainly applied to rotary cutting tools like T-slot cutter, and can also be applied to bushing, punch, EDM blank where large volume of machining removal is required.