EP 1480776 A1 20041201 - METHOD FOR PLASMA-OXYACETYLENE CUTTING FERROUS METALS
Title (en)
METHOD FOR PLASMA-OXYACETYLENE CUTTING FERROUS METALS
Title (de)
PLASMA-SAUERSTOFFSCHNEIDVERFAHREN VON EISENMETALLEN
Title (fr)
PROCEDE D OXYCOUPAGE PLASMA DES METAUX FERREUX
Publication
Application
Priority
- FR 0300156 W 20030117
- FR 0202140 A 20020220
Abstract (en)
[origin: WO03070413A1] Disclosed is a method for operating an installation used for plasma-oxyacetylene cutting metallic workpieces that contain at least one ferrous material. Said installation comprises a central nozzle (1) delivering an oxygen-containing gas stream for cutting, an intermediate nozzle (2) used as an electrode (9), which is coaxially aligned with the central nozzle (1) and delivers a first annular plasma jet, and a peripheral nozzle (3) which delivers a second annular plasma jet and is coaxially aligned with the intermediate nozzle (2). The workpiece is preheated in an initiation area, pierced across the entire thickness of the workpiece to be cut, and then cut according to a desired cutting kerf. The nozzle (1) is electrically insulated from the electrode (2) and from any other part of the installation having the same potential as the electrode while the inventive method is carried out.
IPC 1-7
IPC 8 full level
B23K 10/00 (2006.01); H05H 1/34 (2006.01)
CPC (source: EP US)
B23K 10/00 (2013.01 - EP); H05H 1/34 (2013.01 - EP US); H05H 1/3452 (2021.05 - EP); H05H 1/3457 (2021.05 - EP)
Citation (search report)
See references of WO 03070413A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03070413 A1 20030828; WO 03070413 A8 20041021; EP 1480776 A1 20041201; FR 2836079 A1 20030822; FR 2836079 B1 20040402
DOCDB simple family (application)
FR 0300156 W 20030117; EP 03712260 A 20030117; FR 0202140 A 20020220