Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
-----
Ways to improve strip cleanliness in galvanizing
for Engineers, Shops, Specifiers
avail from eBay, AbeBooks, or Amazon
avail from eBay, AbeBooks, or Amazon
avail from eBay, AbeBooks, or Amazon
avail from eBay, AbeBooks, or Amazon
avail from Amazon
"User's Guide to Hot Dip Galvanizing for Corrosion Protection in Atmospheric Service" by NACE (1997 only rarely avail.)
avail from AbeBooks, or Amazon
(as an Amazon Associate & eBay Partner, we earn from qualifying purchases)
Q. We have a continuous galvanizing line, where we want to add a cleaning (degreasing) unit to improve coating quality. I would like your suggestions/recommendations in this regard, and if possible the expected cost of the system.
Madhu RanjanR&D Center, Steel Authority of India Ltd - Ranchi, Jharkhand, India
2005
A. When adding a cleaning section to a galvanizing line there are many things that you need to look into . Of these probably the most important is in the type of rolling oil that is used on the cold band strip . If you go the standard route and put in an alkaline brush cleaner this will be imperative in what type of chemical you will use in the end . When you come into contact with a chemical vendor they should know the optimal chemical for your use .
If you tend to go with a higher end cleaning section I would suggest an electrostatic cleaning section . Though this cost more in in the commissioning stages it overall will save you money in the long run due to the savings in waste water treatment . The other thing to consider with a basic alkaline cleaner is the adding of a boiler unit to heat the water to steam form to allow the water temp to get to the desired range for cleaning . As far as the cost issue goes they range by company . Although the general alkaline cleaner is definitely cheaper in the beginning an electrostatic cleaner section would pay for itself 10 fold in the long run . Hope this helps out with your question .
- Rancho Cucamonga, California, USA
Q, A, or Comment on THIS thread -or- Start a NEW Thread