EP 2877298 A1 20150603 - DIRECT OR INDIRECT METAL PIPE EXTRUSION PROCESS, MANDREL FOR EXTRUDING METAL PIPES, METAL PIPE EXTRUDER AND EXTRUDED METAL PIPE
Title (en)
DIRECT OR INDIRECT METAL PIPE EXTRUSION PROCESS, MANDREL FOR EXTRUDING METAL PIPES, METAL PIPE EXTRUDER AND EXTRUDED METAL PIPE
Title (de)
DIREKTES ODER INDIREKTES METALLROHRSTRANGPRESSVERFAHREN, DORN ZUM PRESSEN VON METALLROHREN, METALLROHRSTRANGPRESSE SOWIE STRANGGEPRESSTES METALLROHR
Title (fr)
PROCÉDÉ D'EXTRUSION DIRECT OU INDIRECT DE TUBES MÉTALLIQUES, MANDRIN POUR PRESSER LES TUBES MÉTALLIQUES, PRESSE D'EXTRUSION DE TUBES MÉTALLIQUES AINSI QUE TUBE MÉTALLIQUE EXTRUDÉ
Publication
Application
Priority
- DE 102012014836 A 20120727
- DE 102012021787 A 20121108
- DE 2013000401 W 20130724
Abstract (en)
[origin: WO2014015849A1] If a mandrel (6) for extruding metal pipes, having two axially offset pressing surfaces (63; 64) with different radial embossing and having a transition region (66) between these two pressing surfaces (63; 64) has a support surface (62) in the transition region (66) then the negative effect of narrowing, which arises owing to the mandrel (6) shifting from a first pressing position, in which the first (63) of the two pressing surfaces interacts with a die, to a second pressing position, in which the second pressing surface (64) interacts with the die, can be minimised.
IPC 8 full level
B21C 23/08 (2006.01); B21C 23/20 (2006.01); B21C 23/21 (2006.01); B21C 25/08 (2006.01)
CPC (source: EP KR RU US)
B21C 23/085 (2013.01 - EP KR US); B21C 23/205 (2013.01 - EP KR US); B21C 23/217 (2013.01 - EP KR US); B21C 25/04 (2013.01 - US); B21C 25/08 (2013.01 - EP KR US); B21C 23/08 (2013.01 - RU); B21C 23/20 (2013.01 - RU); B21C 23/21 (2013.01 - RU); B21C 25/08 (2013.01 - RU)
Citation (search report)
See references of WO 2014015849A1
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 2014015849 A1 20140130; CN 104487182 A 20150401; DE 102012021787 A1 20140130; DE 102012021787 B4 20170921; EP 2877298 A1 20150603; EP 2877298 B1 20210407; ES 2873363 T3 20211103; JP 2015527200 A 20150917; JP 6195090 B2 20170913; KR 101906088 B1 20181008; KR 20150037765 A 20150408; KR 20170102036 A 20170906; RU 2015101559 A 20160920; RU 2634821 C2 20171103; US 10906077 B2 20210202; US 2015174630 A1 20150625; US 2017297069 A1 20171019
DOCDB simple family (application)
DE 2013000401 W 20130724; CN 201380039526 A 20130724; DE 102012021787 A 20121108; EP 13762732 A 20130724; ES 13762732 T 20130724; JP 2015523419 A 20130724; KR 20147036679 A 20130724; KR 20177023674 A 20130724; RU 2015101559 A 20130724; US 201314416728 A 20130724; US 201715638535 A 20170630