Global Patent Index - EP 0662519 B1

EP 0662519 B1 20000531 - Apparatus for heat treating workpieces

Title (en)

Apparatus for heat treating workpieces

Title (de)

Vorrichtung zur Wärmebehandlung von Werkstücken

Title (fr)

Appareil de traitement thermique de pièces

Publication

EP 0662519 B1 (DE)

Application

EP 94111942 A

Priority

DE 4400326 A

Abstract (en)

[origin: EP0662519A1] Heat treatment furnace, esp. furnace with charge cooling by hydrogen gas circulation for hardening metal parts, includes a liftable hood enclosing the charge heating chamber, a base cover, vacuum and gas inlet and outlet connections, a cooling gas circulating fan and heating elements. A base (7) with charge table (80 is mounted rotatable about a vertical axis (A) in the base cover (3), with heating elements (37,37') on the base (7), a bar grid (33, 34) for holding the charge above the heating elements (37, 37') and an insulating plate (43, 44) below the heating elements (37,37'). A trunnion (15) on the underside of the base (7) projects through the base cover (3) in a sealed bearing (5) and is coupled to a motor drive (19) to rotate the base (7) and charge table (8).

IPC 1-7

C21D 1/773

IPC 8 full level

C21D 1/773 (2006.01); C21D 1/613 (2006.01); C21D 9/00 (2006.01)

CPC (source: EP)

C21D 1/773 (2013.01); C21D 1/613 (2013.01); C21D 9/0037 (2013.01)

Designated contracting state (EPC)

DE FR GB IT SE

DOCDB simple family (publication)

EP 0662519 A1 19950712; EP 0662519 B1 20000531; DE 4400326 A1 19950713; DE 4400326 C2 20021031; NL 194675 B 20020701; NL 194675 C 20021104; NL 9401597 A 19950801; US 5478057 A 19951226

DOCDB simple family (application)

EP 94111942 A 19940730; DE 4400326 A 19940107; NL 9401597 A 19940929; US 35555194 A 19941214