|
|
![]() Cycles thru suppliers. |
|
![]() |
Letter 21047
|
|
|
|
Hi,
Hope you have chromate treatment facilities there in your process. Keep chromate solution temperature above 80 degree centrigade to dry up the sheet after chromate treatment, next you can use hot air to dry up the swheet after treatment. Corrugate the sheets as soon as possible in the humid condition.Arrange cross ventilation during stroage--if necessary use padastal fan at the stroage area.Last of all if the condition does not improve your last resort would be to use oil in the corrugation machine(through special arrangement), which may help you to beat white rust formatiom.
Regards,
Mahbub Hossain
M/S POWER TRADE BUILDING SYSTEM LTD - Dhaka, Bangladesh
Chromating unit is surely a good solution to prevent Galvanised
sheet from white rust formation.But chromic acid is another factor
which can arise problem of pollution.
Please suggest whether this problem can be minimised by using
chemical coaters?If yes,can coating by chemical coater avoid the use
of cleaning section in Color coating line?
Please explain the merits and demerits of this alternative.
tks,
Sunil Chauhan
- Indore, M.P, India
During a panel discussion at Sur/Fin 2006 in Milwaukee, one of the participants claimed that the new TCP hexavalent-free chromate conversion coatings developed for aluminum work well on galvanized materials as well. I would suggest that you contact one of the four licensees for further discussion. They are Henkel, Luster-On, Metalast, and Surtec.
|
|
Ted Mooney finishing.com Brick, New Jersey |

Save
This Page (why?) - Home - ©1995-2009 finishing.com