EP 1761660 A1 20070314 - METHOD FOR REMOVING A COATING FROM A COMPONENT
Title (en)
METHOD FOR REMOVING A COATING FROM A COMPONENT
Title (de)
VERFAHREN ZUM ABTRAGEN EINER BESCHICHTUNG VON EINEM BAUTEIL
Title (fr)
PROCEDE POUR ENLEVER UN REVETEMENT APPLIQUE SUR UNE PIECE
Publication
Application
Priority
- DE 2005001090 W 20050613
- EP 04015424 A 20040630
- DE 102004053135 A 20041029
- EP 05770315 A 20050613
Abstract (en)
[origin: WO2006002610A1] The invention relates to a method for removing coatings which are applied to components, such as turbine blades. When the turbine blades have reached the end of the product life cycle, said coatings can be removed so that the turbine blades can be re-used after the application of a new coating. According to the invention, the removal of the coating containing, in particular, chrome oxide compounds, is carried out by means of a removal bath, wherein an inhibitor in the form of alkanolamine compounds or salts containing said compounds (for example triethanolamine) are added. Said compounds prevent, in an advantageous manner, the formation of novel chrome oxide compounds during the removal of the coating on the turbine blades and/or enable the effective removal the chrome oxide compounds in the coating, such that the chrome oxide compounds do not have a negative influence on the removal rate of the coating removal method. It is also possible to reduce, in an advantageous manner, the treatment times of the removal process.2 % of triethanolamine (TEA), which reduces the treatment time in the hydrochloric acid, for example, to less than an hour, is added
IPC 8 full level
B08B 3/12 (2006.01); C23G 1/02 (2006.01); C23G 1/06 (2006.01); C23G 1/20 (2006.01); C25F 1/02 (2006.01); C25F 5/00 (2006.01); C25F 7/00 (2006.01)
CPC (source: EP US)
B08B 3/08 (2013.01 - EP US); B08B 3/12 (2013.01 - EP US); C23F 1/26 (2013.01 - EP US); C23F 1/44 (2013.01 - EP US); C23G 1/106 (2013.01 - EP US); C25F 5/00 (2013.01 - EP US)
Citation (search report)
See references of WO 2006002610A1
Citation (examination)
EP 1600527 A1 20051130 - GEN ELECTRIC [US]
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
WO 2006002610 A1 20060112; EP 1761660 A1 20070314; US 2008277288 A1 20081113
DOCDB simple family (application)
DE 2005001090 W 20050613; EP 05770315 A 20050613; US 63013705 A 20050613