EP 3403740 A1 20181121 - FORGING APPARATUS AND METHOD
Title (en)
FORGING APPARATUS AND METHOD
Title (de)
SCHMIEDEVORRICHTUNG UND -VERFAHREN
Title (fr)
APPAREIL ET PROCÉDÉ DE FORGEAGE
Publication
Application
Priority
GB 201707896 A 20170517
Abstract (en)
The present invention provides a method of upset forging comprising inserting a stock material into a die, the stock material having a free axial portion with upper and lower surfaces. Next, a punch is used to apply an axial (e.g. horizontal) compression force against the free axial portion of the stock material whilst constraining the upper and lower surfaces of the free axial portion. The constraining positon restricts movement of the free axial portion in a direction substantially perpendicular (e.g. vertical) to the axial compression force thus preventing buckling of the free axial portion.
IPC 8 full level
B21J 5/08 (2006.01); B21J 13/02 (2006.01); B21K 3/04 (2006.01)
CPC (source: EP US)
B21J 5/08 (2013.01 - EP US); B21J 13/02 (2013.01 - EP US); B21K 3/04 (2013.01 - EP US); F04D 29/34 (2013.01 - US); F04D 29/388 (2013.01 - US)
Citation (search report)
- [XY] EP 1844875 A1 20071017 - SHOWA DENKO KK [JP]
- [X] US 4970887 A 19901120 - LORIEUX HENRI A G [FR]
- [XY] US 4571977 A 19860225 - UENO KEII [JP], et al
- [X] CN 102756063 B 20140903 - DONGFANG TURBINE CO LTD DONGFANG ELECTRIC CORP
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)
EP 3403740 A1 20181121; GB 201707896 D0 20170628; US 2018333768 A1 20181122
DOCDB simple family (application)
EP 18167755 A 20180417; GB 201707896 A 20170517; US 201815978567 A 20180514