EP 0101097 B1 19860423 - PROCESS FOR MANUFACTURING WORK-HARDENED METALLIC WORKPIECES BY FORGING OR PRESSING
Title (en)
PROCESS FOR MANUFACTURING WORK-HARDENED METALLIC WORKPIECES BY FORGING OR PRESSING
Publication
Application
Priority
CH 447382 A 19820722
Abstract (en)
[origin: EP0101097A1] 1. Process for the production of a work-hardened metallic workpiece from an austenitic iron or nickel alloy, capable of extensive work-hardening, by forging or pressing in a preheated and heated mould formed as a die, characterised in that the forging blank present as a preform is converted into the end product in a single working pass in one heat with the use of a single mould, forming being accomplished essentially in a first working phase and work-hardening of the workpiece being accomplished essentially in a second working phase, the forging blank being brought to different initial temperatures in different parts of its geometry as a function of the location and being deformed in the various parts in such a way that the degree of work-hardening over the entire wirkpiece reaches approximately the same value, and that the workpiece is finally cooled to room temperature.
IPC 1-7
IPC 8 full level
B21J 1/06 (2006.01); B21J 5/00 (2006.01); B21K 3/04 (2006.01); C21D 7/00 (2006.01); C21D 8/00 (2006.01)
CPC (source: EP)
B21J 5/00 (2013.01); B21K 3/04 (2013.01); C21D 7/00 (2013.01); C21D 8/005 (2013.01)
Citation (examination)
SHEET METAL INDUSTRIES, Band 49, Nr. 1, Januar 1972, London, GB. V.J. McNEELY et al.: "Higher-strength austenitic stainless steels", Seiten 17-25
Designated contracting state (EPC)
CH DE FR GB LI SE
DOCDB simple family (publication)
EP 0101097 A1 19840222; EP 0101097 B1 19860423; DE 3363150 D1 19860528; JP S5930443 A 19840218
DOCDB simple family (application)
EP 83200763 A 19830530; DE 3363150 T 19830530; JP 13108783 A 19830720