EP 0913211 A3 20010530 - Method and device for reducing the wall thickness of a hollow block
Title (en)
Method and device for reducing the wall thickness of a hollow block
Title (de)
Verfahren und Vorrichtung zum Verringern der Wanddicke eines Hohlblocks
Title (fr)
Procédé et dispositif pour réduire l'épaisseur de la paroi d'un bloc creux
Publication
Application
Priority
DE 19748920 A 19971030
Abstract (en)
[origin: EP0913211A2] To reduce the wall thickness of the end (1) of a hollow block, to be inserted into a rotary piercing mill, the end of the block to be inserted is drawn over a mandrel (4) before it reaches the rotary piercing mill using a roller cage similar to a push bench assembly.
IPC 1-7
IPC 8 full level
B21C 1/24 (2006.01); B21C 37/16 (2006.01); B21B 15/00 (2006.01); B21B 19/06 (2006.01)
CPC (source: EP)
B21C 1/24 (2013.01); B21C 37/16 (2013.01); B21B 19/06 (2013.01); B21B 2015/0028 (2013.01)
Citation (search report)
- [DY] US 5125251 A 19920630 - PETTERSSON GUSTAV-ADOLF [SE], et al
- [Y] US 5642638 A 19970701 - PIETSCH JUERGEN [DE], et al
- [XA] CH 170512 A 19340715 - SINGER FRITZ [DE]
- [XA] GB 2007569 A 19790523 - ACCLES & POLLOCK LTD
- [XA] DE 4328002 C1 19940804 - SCHUMAG AG [DE]
- [X] DE 3001959 A1 19810723 - KOCKS TECHNIK [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0913211 A2 19990506; EP 0913211 A3 20010530; DE 19748920 A1 19990512; DE 19748920 C2 20031009
DOCDB simple family (application)
EP 98250360 A 19981013; DE 19748920 A 19971030