EP 0249092 B1 19900307 - PROTECTION SHIELD FOR A TURBINE BLADE MADE OF TITANIUM, AND BRAZING METHOD FOR SUCH A SHIELD
Title (en)
PROTECTION SHIELD FOR A TURBINE BLADE MADE OF TITANIUM, AND BRAZING METHOD FOR SUCH A SHIELD
Publication
Application
Priority
FR 8607661 A 19860528
Abstract (en)
[origin: US4795313A] A protective tip (5) for a titanium steam-turbine blade (1), comprises 28% to 40% TiC, 12% to 26% Cr+Co, 1% to 6% Mo, 3% to 8% Ni 0.3% to 1.5% Cu and a balance of Fe. The tip (5) is brazed to the blade (1) by interposing a copper-based strip (6) having a thickness lying between 7/100 mm and 15/100 mm therebetween, then raising the temperature of the blade (1) and its tip (5) to between 900 DEG C. and 950 DEG C. in a vacuum or inert atmosphere oven. This temperature is maintained for a period of between thirty minutes and seventy-five minutes, and the oven is allowed to cool to ambient temperature. Optimal brazing also serves to harden the tip (5) possesses very good resistance to abrasion by water droplets.
IPC 1-7
IPC 8 full level
B23K 1/19 (2006.01); C22C 29/10 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); C22C 38/52 (2006.01); F01D 5/28 (2006.01)
CPC (source: EP US)
C22C 33/0292 (2013.01 - EP US); F01D 5/28 (2013.01 - EP US); Y10T 29/49337 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0249092 A1 19871216; EP 0249092 B1 19900307; AT E50824 T1 19900315; CN 1009472 B 19900905; CN 87104497 A 19871216; CS 276725 B6 19920812; CS 276857 B6 19920812; CS 382790 A3 19920115; CS 389287 A3 19920318; DE 3761833 D1 19900412; ES 2013272 B3 19900501; FR 2599425 A1 19871204; FR 2599425 B1 19880805; GR 3000501 T3 19910731; JP S62297442 A 19871224; US 4795313 A 19890103; ZA 873837 B 19871124
DOCDB simple family (application)
EP 87107673 A 19870526; AT 87107673 T 19870526; CN 87104497 A 19870528; CS 382787 A 19870528; CS 382790 A 19900802; CS 389287 A 19870528; DE 3761833 T 19870526; ES 87107673 T 19870526; FR 8607661 A 19860528; GR 900400323 T 19900523; JP 12958887 A 19870526; US 5492687 A 19870528; ZA 873837 A 19870527