Abrasive liquid jet cutting
AssigneeInternational Harvester Company
InventorPeter H. Hofer
Life of this patent
Estimating the term…
Abstract
Abrasive liquid jet cutting is provided by disposing abrasive particles in positionally supported form, as on a carrier, such as sandpaper, between the liquid jet nozzle and the workpiece. The particles are intercepted by the liquid jet and driven into the workpiece which may be ferrous or nonferrous metal. The particles may be bonded to a paper-like backing, incorporated in a binder, such as a viscous paste, or formed into a rod-like structure. Variable feed of the workpiece or the abrasive carrier can be used to provide optimized or selective abrasive cutting.
Claims31
In a process of cutting a workpiece using a relatively thin, high velocity liquid jet directed through a nozzle opening, the improvement comprising the steps of interposing a plurality of stationary positionally supported abrasive particles between said nozzle opening and said workpiece, directing said liquid jet in an airborne stream toward said particles, intercepting said particles with said liquid jet, and driving said liquid jet and said particles into said workpiece.
In a process of cutting a workpiece using a relatively thin, high velocity liquid jet directed through a nozzle opening, the improvement comprising the steps of interposing a plurality of positionally supported abrasive particles between said nozzle opening and said workpiece, intercepting said particles with said liquid jet, and driving said liquid jet and said particles into said workpiece wherein said interposing step comprises disposing a layer of material having said abrasive particles bonded thereto between said nozzle and said workpiece and said intercepting step comprises passing said liquid jet through said material.
In a process of cutting a workpiece using a relatively thin, high velocity liquid jet directed through a nozzle opening, the improvement comprising the steps of interposing a plurality of positionally supported abrasive particles between said nozzle opening and said workpiece, intercepting said particles with said liquid jet, and driving said liquid jet and said particles into said workpiece wherein said interposing step comprises applying a binder containing said abrasive particles on the side of said workpiece facing said nozzle and said intercepting step comprises passing said liquid jet through said binder.
A method of cutting a workpiece comprising:
- applying an abrasive particle carrier to said workpiece with the particles in fixed positional relation therewith;
- generating a high speed, relatively thin liquid jet;
- and,
- directing said liquid jet to pass through said carrier.
A method of cutting a workpiece comprising:
- disposing one or more layers of easily cut material, said material having abrasive particles bonded thereto, above said workpiece,
- generating a high velocity, relatively thin liquid jet;
- and
- directing the liquid jet through said material and into the workpiece.
A process of generating an abrasive liquid cutting jet comprising generating a supersonic velocity, relatively thin airborne liquid cutting jet;
- disposing a stationary carrier having abrasive particles joined therewith in the path of said liquid jet;
- and
- passing said liquid jet through said carrier such that abrasive particles from said carrier are at least momentarily entrained by said liquid jet.
Dependencies are inferred from the claim text.