EP 0044783 B1 19830727 - METHOD OF MAKING AXLES
Title (en)
METHOD OF MAKING AXLES
Publication
Application
Priority
FR 8016107 A 19800722
Abstract (en)
[origin: EP0044783A1] 1. Process for producing axles, especially of railway rolling stock, by forging in a mould (9, 10, 13, 14) a heted blank (8) of a diameter less than the largest diameter of the axle to be produced, characterised in that at least some of the blank (8) is heated to a temperature of between 1 100 degrees and 1 300 degrees C, preferably near 1 260 degrees C, in that the axle has two spindles (f1 , f2 ), and in that forging includes a simultaneous operation of upsetting the central parts (c, pc, pd) of the axle and extruding at least one of the two spindles (f1 , f2 ), this simultaneous operation being carried out as a result of a movement towards the centre of the axle of at least one ring (13, 14) forming part of the mould, this movement being produced by means of a single press stroke.
IPC 1-7
IPC 8 full level
B21J 5/08 (2006.01); B21C 23/14 (2006.01); B21J 1/06 (2006.01); B21K 1/00 (2006.01); B21K 1/10 (2006.01); B21K 1/12 (2006.01); B21K 7/00 (2006.01); B21K 7/12 (2006.01)
CPC (source: EP KR)
B21J 1/06 (2013.01 - EP); B21J 5/08 (2013.01 - KR); B21K 1/00 (2013.01 - KR); B21K 1/10 (2013.01 - EP); B21K 7/00 (2013.01 - KR)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0044783 A1 19820127; EP 0044783 B1 19830727; AT E4293 T1 19830815; AU 555552 B2 19861002; AU 7311781 A 19820128; BR 8104551 A 19820406; CA 1170024 A 19840703; DD 201981 A5 19830824; DE 3160703 D1 19830901; ES 503804 A0 19821101; ES 8300530 A1 19821101; FR 2487232 A1 19820129; FR 2487232 B1 19830527; HU 189985 B 19860828; JP S5752543 A 19820329; KR 830005927 A 19830914; KR 850000296 B1 19850318; MX 155937 A 19880525; PL 232305 A1 19820315; ZA 814381 B 19820728
DOCDB simple family (application)
EP 81401142 A 19810720; AT 81401142 T 19810720; AU 7311781 A 19810720; BR 8104551 A 19810716; CA 382158 A 19810721; DD 23200081 A 19810722; DE 3160703 T 19810720; ES 503804 A 19810709; FR 8016107 A 19800722; HU 212781 A 19810721; JP 11291281 A 19810717; KR 810002648 A 19810721; MX 18838781 A 19810721; PL 23230581 A 19810721; ZA 814381 A 19810629