Letter 16848

White run down stain from chrome tank

++

The white rundown stain problem in the chrome tank, after chrome plate bar or rack with parts then bar or rack stay in chrome tank about 3 minutes, during this time need current at the anode and cathode, if need current how much current need? "No white rundown stain after nickel plated parts".

Popat Patel
    plating shop
Roseville, Michigan

++

It's difficult to understand your problem. It seems to be a chrome burning (excess current) problem, with the appearance of a white haze. Is your white after chrome or after nickel? Is your operation a Bright Chrome finish, if so, 3 minutes is rather excessive time. Please supply more information.

Cordially,

Carlos Cielak
plating shop - Mexico City, DF, Mexico

August , 2008

Hi, Popat. Can I take a guess that the problem is that you have a programmed hoist installation and it is requiring that the work stay in the chrome tank 3 minutes longer than necessary? If that is the case, the programming must be fixed rather than worrying about whether it is more damaging to the finish to leave it in the tank with the power on vs. off :-)

Regards,


Ted Mooney, P.E. 
finishing.com
Brick, New Jersey

Dear reader

Post an answer
 
Post a question
 
Report broken links

Legal disclaimer boilerplate button

List of Directories
Jobshops Directory button Environmental Directory button Equipment Directory button Consultants Directory button Chemicals Directory button Test Directory button Help-Wanted Directory button About Advertising button Classifieds Directory button Booklist button

 

Link to Del.icio.us button Save This Page (why?)    -    Home    -    ©1995-2009 finishing.com