EP 2029957 A1 20090304 - PROJECTILE MADE OF STEEL SOFTENED TO THE CORE AND MANUFACTURING PROCESS THEREFORE
Title (en)
PROJECTILE MADE OF STEEL SOFTENED TO THE CORE AND MANUFACTURING PROCESS THEREFORE
Title (de)
AUS BIS ZUM KERN ERWEICHTEM STAHL HERGESTELLTES GESCHOSS UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
PROJECTILE EN ACIER ADOUCI A COEUR ET PROCÉDÉ DE FABRICATION D'UN TEL PROJECTILE
Publication
Application
Priority
- BE 2007000048 W 20070521
- BE 200600329 A 20060616
Abstract (en)
[origin: WO2007143800A1] The present invention relates to a process for manufacturing a projectile made of steel or based on iron, for a hunting or sports cartridge, for the purpose of giving it a Vickers hardness at room temperature of between 40 HV 10 and 110 HV 10, preferably between 40 HV 10 and 85 HV 10, characterized at least by the following successive steps: - liquid pig iron or steel is used, hereafter called liquid metal, the carbon content of which is between 0.8 and 4.0% C by weight, preferably between 0.8 and 2.0% C by weight; - the liquid metal is cast using a steam or water-vapour granulation process to obtain spheroidal steel particles; - said particles are subjected to a heat treatment for softening the solidified metal by graphitization, while remaining in the ferritic range; and - optionally, said particles are subjected to a surface coating treatment.
IPC 8 full level
F42B 7/04 (2006.01); F42B 12/74 (2006.01)
CPC (source: EP US)
F42B 7/046 (2013.01 - EP US); F42B 12/74 (2013.01 - EP US); Y10T 29/49712 (2015.01 - EP US)
Citation (search report)
See references of WO 2007143800A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2007143800 A1 20071221; AT E448464 T1 20091115; BE 1017170 A3 20080304; DE 602007003221 D1 20091224; EP 2029957 A1 20090304; EP 2029957 B1 20091111; EP 2029957 B8 20100310; ES 2336150 T3 20100408; US 2009301338 A1 20091210; US 8356555 B2 20130122
DOCDB simple family (application)
BE 2007000048 W 20070521; AT 07719212 T 20070521; BE 200600329 A 20060616; DE 602007003221 T 20070521; EP 07719212 A 20070521; ES 07719212 T 20070521; US 30296807 A 20070521