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Degreasing
Cleaner |
It is very important to degrease metal surface before phosphating. There are many kind of cleaner, because of the several feature for optimum performance. All of Doonam's cleaners are for using at extremely wide temperature range, it can be used almost anywhere. Doonam technical representative will recommend the proper type of cleaner for each processing line.
- Alkali powder : DN 208
- Alkali solution : DN 2140
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| Etching |
DN2200 for etching's features are following
- getting rid of the gloss on surface
- making a surface smooth
- not contain any nitric acid
- keep away the sludge from tank
- constant etching performance
- very simple and easy to use
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Neutralization
for desmut |
After alkaline etching, RD 21 is added for neutralization, instead of nitric acid. and If RD 21 is applied with sulfuric acid, you can take the high performance at the most competitive cost. |
| Sealing |
Doonam can provide the excellent sealing performance to you. Specially, If you use RD88 , you don't need preheating for sealing. so you can save the cost, and improve production.
- Type at high temperature : 1508
- Type at normal temperature : RD 88
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