Saru Z-21 is a revolutionary flux and has been especially formulated to reduce physically entrapped zinc and zinc oxide formation substantially in hot Dip galvanizing process. “SAZU” Z-21 flux melts at 194 ‘C (300’F) coats the liquid and then combines with the oxide particles assuring rapid reaction. Fumes and objectional smoke are minimized and the surface of the metal is protected from oxidation.
How Does 'Saru' Z-21 Function
As soon as ‘SARU’ Z-21 flux is added in the bath it gives a molten foamy layer cover on the whole bath thereby protecting the molten metal from atmospheric-oxygen, reduces formation of zinc ash to as low as 6-10% of every day consumption in comparison to 12 to 16% with the conventional method being followed.
A comparative study is given below between conventional process and with SARU Z-21 flux process.
| Bath | Method | Zinc Consumption | Wt. of ash | % loss on |
| Capacity | employed | every day | collected every day | Zinc consumed |
| 60 tonnes | conventional | 6 tonnes | 960 kgs. | 16% |
| 60 tonnes | ‘SARU’ | 6 tonnes | 480 kgs. | 8.00% |
| Z-21 ‘FLUX’ |
'SARU' Z-21 (Wonder Flux)
This is a smokeless Galvanising Flux and is almost twice as efficient as regular Z-21 reducing Zinc Ash formation to as low as 3-5%.
Advantages of Saru Z-21 Flux
- Reduces formation of zinc oxide and physically entrapped zinc from 12-16% to 6-8% on total zinc consumption every day.
- Helps in giving uniform zinc coating on the galvanizing objects.
- Reduces zinc dust.
- Brighter piper, tubes.
- Very convenient to use.