During the conduct of overhaul on our Aircraft, the manual asks for applicaton of Cadmium onto a (flap) track onto which the carriage assembly (supported by te rollers) will move on.... the process specified is MIL-STD-865D..... material of these track (which will be getting coated) is 4340 Steel
according to the SIFCO process Cd LHE code 5070, two procedures are given. one for clean unsed surface and one for rough used surface...... the differecne is of "PREWET AND THEN ELECTROCLEAN WITH CODE 1010/4100 AT 9V REVERSE CURRENT", followed by the water rinse and then Cd plate....
Since its being carried out by the other deptt and they followed the procedure for new unsed surface instead of the used one (i.e didnot apply the reverse current), stating that its not required...
can somebody please tell
a. why has this been specified to electroclean and what will it do?
b. if it has notbeen done, what difference will it make....?
the process is being carried out and tape test is yet to be performed...
ref is (page 38)
according to the SIFCO process Cd LHE code 5070, two procedures are given. one for clean unsed surface and one for rough used surface...... the differecne is of "PREWET AND THEN ELECTROCLEAN WITH CODE 1010/4100 AT 9V REVERSE CURRENT", followed by the water rinse and then Cd plate....
Since its being carried out by the other deptt and they followed the procedure for new unsed surface instead of the used one (i.e didnot apply the reverse current), stating that its not required...
can somebody please tell
a. why has this been specified to electroclean and what will it do?
b. if it has notbeen done, what difference will it make....?
the process is being carried out and tape test is yet to be performed...
ref is (page 38)
