EP 0037033 B1 19831109 - METHOD AND APPARATUS FOR METAL PLATING OF CYLINDRIC BORES WITH LARGE DIAMETER EXTENDING ACROSS THE CENTRAL PART OF A WORK PIECE HAVING LARGE DIMENSIONS
Title (en)
METHOD AND APPARATUS FOR METAL PLATING OF CYLINDRIC BORES WITH LARGE DIAMETER EXTENDING ACROSS THE CENTRAL PART OF A WORK PIECE HAVING LARGE DIMENSIONS
Publication
Application
Priority
FR 8006834 A 19800327
Abstract (en)
[origin: US4345977A] A method and apparatus for depositing a metal on a large-diameter cylindrical bore which passes right through the central portion of a large part. The invention consists in placing and centering the large part (1) between an upper tank (4) and a lower tank (3), so as to define a chamber (8) inside which the bore (2) is disposed and outside which the peripheral portions (9) of the part (1) extend, said chamber being filled with electrolyte. The electrolyte is homogenized and regenerated continuously outside the chamber (8) before being injected in the chamber (8) and before being entrained in a spirally descending motion to the level of the bore (2). The metal deposit takes place under the effect of a direct current which circulates between metal anodes (14) disposed in the bore (2) and the part (1) which serves as a cathode. The invention is used for depositing nickel on the bores of turbine rotor wheels so as to adjust dimensions or prevent fretting corrosion.
IPC 1-7
IPC 8 full level
C25D 7/00 (2006.01); C25D 7/04 (2006.01); C25D 21/00 (2006.01)
CPC (source: EP US)
C25D 5/08 (2013.01 - EP US); C25D 7/04 (2013.01 - EP US); C25D 17/02 (2013.01 - EP US); C25D 17/12 (2013.01 - EP US); C25D 21/00 (2013.01 - EP US); C25D 21/02 (2013.01 - EP US); C25D 21/18 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
US 4345977 A 19820824; AT E5267 T1 19831115; DE 3161353 D1 19831215; EP 0037033 A1 19811007; EP 0037033 B1 19831109; JP S5719394 A 19820201; RO 81918 A 19840221; RO 81918 B 19840228; US 4279706 A 19810721; YU 77981 A 19830630; ZA 812072 B 19820630
DOCDB simple family (application)
US 25037881 A 19810402; AT 81102095 T 19810320; DE 3161353 T 19810320; EP 81102095 A 19810320; JP 4463981 A 19810326; RO 10382781 A 19810326; US 15329080 A 19800527; YU 77981 A 19810325; ZA 812072 A 19810327