US 6,783,605 B2 · High speed oxyacetylene cutting of a thick steel part and device therefor

Abstract

The invention relates to a method and apparatus for oxygen-cutting thick pieces of steel at high speed. In accordance with the invention an oxygen-cutting torch (30) held at a predetermined height above the piece (1) to be cut and a slot torch (20) comprising at least one blade nozzle (25) that travels inside the cut slot (1.3) are moved synchronously. The blade nozzle (25) emits at least one jet of heating and/or oxygen-cutting fluids through its leading edge to strike the heating edge of the slot where it combines with the jet of oxygen-cutting fluids emitted by the oxygen-cutting torch (30) to form a leading edge (1.4) of the slot having a profile in the form of a broken line.

Claims14

Dependent claims

A method of oxygen-cutting a piece of steel at high speed comprising:

moving an oxygen-cutting torch, which is maintained at a height above the piece to be cut and cutting a slot within said piece;
disposing a slot torch (20) comprising at least one blade nozzle (25) inside the slot (1.3);
moving the slot torch (20) synchronously with the movement of the oxygen cutting torch (30) and emitting at least one jet (26) of heating and/or oxygen cutting fluids from said at least one blade nozzle,
wherein the at least one jet of heating and/or oxygen cuffing fluids from the blade nozzles strike a leading edge (1.4) of the slot and combine with a jet (36) of the oxygen cutting fluids emitted by the oxygen cutting torch (30) to form a leading edge (1.4) of the slot.

1 more element

Dependencies are inferred from the claim text.

High speed oxyacetylene cutting of a thick steel part and device therefor

Life of this patent

High speed oxyacetylene cutting of a thick steel part and device therefor

Life of this patent

Abstract

Claims14