Global Patent Index - EP 1053808 A4

EP 1053808 A4 2001-12-19 - IMMERSION NOZZLE FOR CONTINUOUS CASTING OF STEEL

Title (en)

IMMERSION NOZZLE FOR CONTINUOUS CASTING OF STEEL

Title (de)

TAUCHDÜSE FÜR DAS STRANGGIESSEN

Title (fr)

TUYERE D'IMMERSION POUR COULEE EN CONTINU D'ACIER

Publication

EP 1053808 A4 (EN)

Application

EP 99900164 A

Priority

  • JP 9900058 W
  • JP 614398 A
  • JP 13223998 A

Abstract (en)

[origin: WO9936213A1] An immersion nozzle for continuous casting of steel comprising, at the entire portion thereof, or at least a part of an inner hole portion thereof in contact with a molten steel, a spinel-periclase-C type refractory, particularly a spinel-periclase-graphite type refractory consisting of 50 to 95 wt% of spinel, 0 to 20 wt% of periclase, 5 to 30 wt% of graphite and not greater than 3 wt% of unavoidable impurities. The inner hole portion (1) and a portion (2) around its discharge port can be made of the spinel-periclase-graphite type refractory, a nozzle main body (10) can be made of an AG type refractory and a powder line portion (3) can be made of a ZrO2-C type refractory.

IPC 1-7 (main, further and additional classification)

B22D 11/10; B22D 41/54

IPC 8 full level (invention and additional information)

B22D 41/54 (2006.01)

CPC (invention and additional information)

B22D 41/54 (2013.01)

Citation (search report)

  • [X] DATABASE WPI Section Ch Week 198645, Derwent World Patents Index; Class L02, AN 1986-294412, XP002178497
  • [A] DATABASE WPI Section Ch Week 197627, Derwent World Patents Index; Class L02, AN 1976-51331X, XP002178498
  • See also references of WO 9936213A1

Designated contracting state (EPC)

AT BE DE ES FR GB IT NL SE

EPO simple patent family

WO 9936213 A1 19990722; EP 1053808 A1 20001122; EP 1053808 A4 20011219

INPADOC legal status


2004-02-04 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030801

2001-12-19 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20011102

2001-12-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE DE ES FR GB IT NL SE

2000-11-22 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000714

2000-11-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE DE ES FR GB IT NL SE