EP 0159029 A3 19870506 - METHOD OF AND APPARATUS FOR HEATING MAGNETIZABLE METAL WORK PIECES
Title (en)
METHOD OF AND APPARATUS FOR HEATING MAGNETIZABLE METAL WORK PIECES
Publication
Application
Priority
- US 60254284 A 19840420
- US 60291484 A 19840423
Abstract (en)
[origin: EP0159029A2] Method of and apparatus for heating work pieces consisting of magnetisable metal to an elevated processing temperature, in which the work pieces are first of all heated inductively to a preheating temperature (T1), which is not substantially above the Curie point of the metal from which the work pieces are produced, and in which the preheated work pieces are then heated further in a highly effective electric radiant-heating furnace (F) to the preselected elevated final temperature (T2), which can, for example, be the forging temperature. For the purpose of preheating, the work pieces (W) are passed in stages through a duct (30) surrounded by an induction heating coil (32) and, from there, guided into the heating chamber (92) of an electric radiant heating furnace (F), through which they are passed in stages and in which they are brought to their final temperature (T2). <IMAGE>
IPC 1-7
IPC 8 full level
B21J 1/06 (2006.01); B21J 17/02 (2006.01); C21D 1/34 (2006.01); C21D 9/00 (2006.01); H05B 6/02 (2006.01)
CPC (source: EP)
B21J 1/06 (2013.01); B21J 17/02 (2013.01); C21D 1/34 (2013.01); C21D 9/0081 (2013.01)
Citation (search report)
- [Y] DE 2149352 A1 19720406 - PARK OHIO INDUSTRIES INC
- [Y] US 2666830 A 19540119 - LUDWIG DREYFUS
- [AD] FR 2377857 A1 19780818 - KLEIN TOOLS INC [US]
- [A] DE 1145652 B 19630321 - PHILIPS PATENTVERWALTUNG
- [A] US 3419698 A 19681231 - ALBERT PALMERO, et al
- [A] US 3912846 A 19751014 - YAMAGISHI HIDEHISA, et al
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 85104660 A 19850417