초록 ▼

A high speed fluid jet nozzle made at least in part of a porous material and configured so that the porous part of the nozzle is surrounded at least in part by a reservoir containing a lubricant fluid. As a cutting fluid passes through the nozzle, lubricant from the reservoir is drawn through the po

A high speed fluid jet nozzle made at least in part of a porous material and configured so that the porous part of the nozzle is surrounded at least in part by a reservoir containing a lubricant fluid. As a cutting fluid passes through the nozzle, lubricant from the reservoir is drawn through the porous material and lubricates the surfaces of the nozzle exposed to the fluid jet. The invention not only resolves the main difficulties of the prior art relating to nozzle wear, it expands the use and applications of high speed fluid jet cutters. By reducing wear of a jet nozzle, it is possible to increase the jet speed and reduce the nozzle diameter even further than the prior art, allowing much higher precision, deeper cutting, and usage on difficult to cut material such as ceramics. The invention thus provides a reliable but yet very simple method for preventing nozzle wear.

대표청구항

[ What is claimed is:] [1.] A method for reducing erosion of a porous nozzle due to an abrasive fluid flowing through the porous nozzle, comprising the step of drawing lubricating fluid through pores of the porous nozzle to form a lubricating film between the porous nozzle and the abrasive fluid.

[ What is claimed is:] [1.] A method for reducing erosion of a porous nozzle due to an abrasive fluid flowing through the porous nozzle, comprising the step of drawing lubricating fluid through pores of the porous nozzle to form a lubricating film between the porous nozzle and the abrasive fluid.