GALVANISING & COLOR COATING
Galvanising & Color Coating
INDUSTRIAL CHEMICALS
Surface Treatment Chemical Guide for Color Coating on Galvanized / Galvalume Surface
SELECTED ALKALINE CLEANERS
ADVANTAGES OF ALKALINE CLEANING
Alkaline cleaning removes organic soils such as rust preventative oils and lubricants. Multi-metal cleaners reduce or eliminate etch on all non-ferrous metals such as galvanized, galvalume and aluminum surfaces.
In addition, cleaners are specially designed to reduce foaming and provide maximum cleaning effectiveness.
PREFERRED ALKALINE CLEANERS
| PRODDUCT NAME | PRODUCT DETAILS | MODE OF APPLICATION | APPLICATION CONC. | APPLICATION TEMP. |
|---|---|---|---|---|
| ETCHINOL S 1121 | It is a low foaming strong alkaline liquid metal cleaner for spray cum dip degreasing of ferrous metals prior to hot dip galvanized steel strips prior to chromate conversion. | Spray cum Dip / Spray | 2 – 4% | 50 – 75oC |
| ETCHINOL S 1125 | It is a low foaming alkaline liquid metal cleaner for spray degreasing and activating of galvanized steel strips, galvalume and aluminum prior to chromate conversion in color coating line. | Spray cum Dip / Spray | 8 – 10% | 60 – 80oC |
| ETCHINOL S 1128 | It is a low foaming alkaline liquid metal cleaner for spray degreasing and activating of galvanized steel strips, galvalume and aluminum prior to chromate conversion in color coating line. | Spray cum Dip | 1 – 2% | 60 – 80oC |
PREFERRED CONVERSION COATING CHEMICALS
ADVANTAGES OF CONVERSION COATING:
Conversion coating enhances the corrosion resistance property on the pretreated galvanized, galvalume and aluminum surface. It also helps inhibit underpaint corrosion creeping process that in turn increases the object life.
Conversion coating reinforces the bond between the paint film and the surface.
Since it is a single treatment process and does not require post rinse, it avoids additional effluent treatment and reduces the expenses for running the process.
PREFERRED CONVERSION COATING CHEMICALS
| PRODUCT NAME | PRODUCT DETAILS | MODE OF APPLICATION | APPLICATION CONC. | APPLICATION TEMP. |
|---|---|---|---|---|
| GALVATREAT 100 | It is a single pack treatment used over G.I. strips, galvalume, and aluminum to produce a uniform conversion coating which improves adhesion, inhibits corrosion and increases the durability of paint finishes. | By Roll-coater / as per plant design | 100 % | Ambient –45oC |
| GALVATREAT 300 | It is a single pack treatment used over G.I. strips, galvalume, and aluminum to produce a uniform conversion coating which improves adhesion, inhibits corrosion and increases the durability of paint finishes. | By Roll-coater / as per plant design | 30 – 35 % | Ambient – 45oC |
| GALVATREAT 1300 | It is a non-hexavalent chrome passivate chemical used over G.I. strips to produce conversion coatings suitable prior to continuous color coating. It is applied preferably by roller coater. | By Roll-coater / as per plant design | 20 – 30 % | Ambient – 45oC |