EP 3365121 A1 20180829 - METHOD OF PRODUCTION OF HIGH-PRESSURE SEAMLESS CYLINDER FROM CORROSION-RESISTANT STEEL
Title (en)
METHOD OF PRODUCTION OF HIGH-PRESSURE SEAMLESS CYLINDER FROM CORROSION-RESISTANT STEEL
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES NAHTLOSEN HOCHDRUCKZYLINDERS AUS EDELSTAHL
Title (fr)
PROCÉDÉ DE FABRICATION D'UN CYLINDRE HAUTE PRESSION SANS JOINTURE EN ACIER INOXYDABLE
Publication
Application
Priority
- CZ 2015855 A 20151203
- CZ 2016050001 W 20160108
Abstract (en)
[origin: WO2017092721A1] Blank (1) of corrosion-resistant steel is coated with coating (2) of water glass with thickness of 20 to 150 μm, cured at 15 to 60 °C, and heated in an induction furnace to the temperature of 1180°C to 1260°C. The heated up blank (1) is without cooling by water descaling transferred into an extrusion press and extruded here, while the coating (2) is broken to pieces and largely removed. Then drawing in a horizontal drawing press and necking are performed. After forming to the final shape of the cylinder, leftovers of coating (2) are removed by pressure blasting. A corrosion-resistant thin-walled seamless high-pressure cylinder with volume of 5 to 260 litres is manufactured.
IPC 8 full level
B21C 23/20 (2006.01); B21C 23/32 (2006.01)
CPC (source: EP RU US)
B21C 23/20 (2013.01 - RU); B21C 23/205 (2013.01 - EP US); B21C 23/218 (2013.01 - US); B21C 23/32 (2013.01 - EP RU US)
Citation (search report)
See references of WO 2017092721A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017092721 A1 20170608; CN 108348971 A 20180731; CN 108348971 B 20190820; CZ 2015855 A3 20170104; CZ 306401 B6 20170104; EP 3365121 A1 20180829; EP 3365121 B1 20190410; ES 2731055 T3 20191113; RU 2710484 C1 20191226; US 2018304330 A1 20181025
DOCDB simple family (application)
CZ 2016050001 W 20160108; CN 201680064469 A 20160108; CZ 2015855 A 20151203; EP 16707614 A 20160108; ES 16707614 T 20160108; RU 2018123526 A 20160108; US 201615768750 A 20160108