Browse Prior Art Database

Method for Producing Water Jet With Imbedded Abrasive Particles

IP.com Disclosure Number: IPCOM000120302D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Dreyfus, RW: AUTHOR [+2]

Abstract

Disclosed is a nozzle for introducing abrasive particles into a high pressure water jet.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 63% of the total text.

Method for Producing Water Jet With Imbedded Abrasive Particles

      Disclosed is a nozzle for introducing abrasive particles
into a high pressure water jet.

      With the development of high pressure seals, jets of fluid can
be used with stagnation pressures up to 100,000 psi.  The fluid used
is typically water, and the water is forced form a nozzle of diameter
of .005" to .050".  The stream of water has enough energy to
penetrate material and cut a hole, or, if the material is moved into
the stream, to cut the material much like a saw.  This is used in
many places because the kerf is small, and the damage to the material
alongside the cut is minimal.  In addition, if the material is
yielding or soft, like polystyrene foam padding for furniture, it is
not distorted by the pressure of a cutting tool.  Six-inch-thick foam
rubber is routinely cut in this way, as are printed circuit boards
and synthetic leather soles for shoes and boots.

      The water jets cannot be used to cut tough and hard materials
like steel.  When cutting fibrous materials like wood or natural
leather, the edge quality is not good enough.  Proposed is a method
of introducing hard particles like diamond, quartz, or tungsten
carbide into the jet.  The particle would be accelerated to the speed
of the jet and would cut the hard material by abrasion.

      The figure shows a scheme to introduce abrasive particles into
the jet 8.  The abrasive particles cannot be introduced int...