US 9,808,909 B2
Orifice for a waterjet cutter
Pradeep Nambiath, Rogers, AR (US); and David S. Wootton, Joplin, MO (US)
Assigned to KMT Waterjet Systems Inc., Baxter Springs, KS (US)
Filed by KMT Waterjet Systems Inc., Baxter Springs, KS (US)
Filed on Jan. 20, 2014, as Appl. No. 14/158,919.
Prior Publication US 2015/0202740 A1, Jul. 23, 2015
Int. Cl. B24C 5/04 (2006.01); B24C 1/04 (2006.01); B05B 1/00 (2006.01)
CPC B24C 5/04 (2013.01) [B05B 1/00 (2013.01); B24C 1/04 (2013.01); B24C 1/045 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An orifice for a high-pressure waterjet cutter, the orifice comprising:
a first surface defining an inlet plane;
a second surface defining an outlet plane;
an inner bore aligned along a flow axis and extending from the first surface to the second surface;
a first layer of polycrystalline diamond extending from the first surface to a first plane between the inlet plane and the outlet plane, the first layer being sintered to define a continuous first component that extends the full width of the orifice, the width being measured in a direction normal to the flow axis;
a second, separate layer of polycrystalline diamond extending from a second plane to the second surface, the second layer being sintered to define a continuous second component that extends the full width of the orifice; and
a third layer formed from a pseudo-monocrystalline diamond disposed between the first and second layers to define a third component, the first component, the second component, and the third component coupled to one another to define a single component, wherein the second component has material properties different than the first component, and wherein the inner bore includes a cylindrical portion adjacent the inlet plane and a frustoconical portion extending from the cylindrical portion to the outlet plane, the frustoconical portion having a maximum diameter at the outlet plane.