EP 1298230 A1 20030402 - Process for removing corrosion products from metallic parts
Title (en)
Process for removing corrosion products from metallic parts
Title (de)
Verfahren zur Entfernung von Schichtbereichen eines Bauteils aus Metall
Title (fr)
Procédé pour enlever des produits de corrosion d'un composant métallique
Publication
Application
Priority
EP 01123593 A 20011001
Abstract (en)
Process for removing corrosion products of a partially corroded component made from a metal and/or metal compound comprises: <??>(a) applying a multiple component cleaning agent to the corroded component; <??>(b) heat treating the component with the cleaning agent so that an impregnating component and an activating component of the agent form a gaseous compound; <??>(c) forming a sacrificial zone partially in the abrasive-resistant regions of the corroded component; and <??>(d) removing the sacrificial zone to remove almost all corrosion products. <??>Preferably the cleaning agent partially adheres to the component. The sacrificial zone is partially formed by regions of the component which contain the impregnating component. The temperature during heat treatment of the component lies below the lowest melting point of the impregnating component. The activating component is a halogen compound. The cleaning agent further contains aluminum oxide as a carrier material.
Abstract (de)
Nach dem Stand der Technik werden Korrosionsprodukte eines Bauteils in einem ersten Arbeitsschritt durch Aufbringen einer Schmelze oder Erwärmen in einem voluminösen Pulverbett entfernt. Dies bedingt hohe Temperaturen oder einen hohen Platzverbrauch. Das erfindungsgemäße Verfahren zur Entfernung von Korrosionsprodukten eines Bauteils (1) besteht darin, ein Reinigungsmittel (10) lokal aufzutragen, das über ein gasförmiges Reaktionsprodukt zur Entfernung von Korrosionsprodukten führt. <IMAGE> <IMAGE> <IMAGE> <IMAGE>
IPC 1-7
C23G 5/00; C23C 10/60; C23F 4/00; F01D 5/00; C23C 10/04; B23P 6/00
IPC 8 full level
B23P 6/00 (2006.01); C23C 10/04 (2006.01); C23C 10/30 (2006.01); C23C 10/60 (2006.01); C23F 1/00 (2006.01); C23F 4/00 (2006.01); C23G 5/00 (2006.01); F01D 5/00 (2006.01); F01D 5/28 (2006.01)
CPC (source: EP US)
C23C 10/30 (2013.01 - EP US); C23G 5/00 (2013.01 - EP US); F01D 5/005 (2013.01 - EP US); F01D 5/288 (2013.01 - EP US); F05B 2230/90 (2013.01 - US); F05D 2230/90 (2013.01 - EP)
Citation (search report)
- [DX] US 6217668 B1 20010417 - CZECH NORBERT [DE], et al
- [X] US 6042879 A 20000328 - DRAGHI PETER J [US], et al
- [A] US 4004047 A 19770118 - GRISIK JOHN J
- [A] EP 0713957 A1 19960529 - FINMECCANICA SPA [IT], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1298230 A1 20030402; CN 1328413 C 20070725; CN 1549874 A 20041124; DE 50202441 D1 20050414; EP 1432847 A1 20040630; EP 1432847 B1 20050309; EP 1432847 B8 20050629; JP 2005504179 A 20050210; US 2004244817 A1 20041209; US 2007023392 A1 20070201; US 7138065 B2 20061121; US 7429337 B2 20080930; WO 03029521 A1 20030410
DOCDB simple family (application)
EP 01123593 A 20011001; CN 02817055 A 20020517; DE 50202441 T 20020517; EP 0205490 W 20020517; EP 02730264 A 20020517; JP 2003532728 A 20020517; US 49056704 A 20040319; US 54125306 A 20060929