Paint & coating of Isotropic SmFeN bonded magnets (NITROQUENCH-P)
Compression molded NITROQUENCH-P shows better rust proof than Nd magnet, it does not rust while it is kept it in dry atmosphere for a long time. However, rust is still generated in high humid atmosphere.
Therefore, the rust proof painting ( surface coating ) is necessary to use. Daido provides 5 kinds of coating to the usage.
The injection molded magnet is relatively hard to be rusted, usually used without coating.
| Coating method | Coating thickness (micron meter) |
Corrosion resistance Time durability in humidity test (Hr) |
Application shape | ||
|---|---|---|---|---|---|
| 60℃×95%R.H. | 80℃×95%R.H. | ||||
| Resin coating | Electro-depositioning ( epoxy ) | 20～35 | 500 | 300 | Various shape |
| Spray coat ( epoxy ) | 15～30 | 400 | 200 | Various shape | |
| Dipping coat ( epoxy ) | 1～5 | 100 | 50 | Small part | |
| Barrel spraying coat ( epoxy ) | 3～18 | 200 | 100 | Small part | |
| Metal Plating | Ni-Plating | 10～30 | 500 | 300 | Various shape |
Please consult with sales staff about details.
New Electro-depositioning coat (N-ED)
About New Electro-depositioning coat (N-ED)
Even conventional electro-depositioning coat has well rust resistance, new electro-depositioning coat (N-ED) persues further resistance of corrosion and chemical, oil durability. Please let us propose the coating method according to your usage.
New Electro-depositioning (N-ED) coated magnet
Feature of New Electro-depositioning coat (N-ED)
| Name | Electro-depositioning | New Electro-depositioning coat (N-ED) |
|---|---|---|
| Resin basic material | Epoxy resin | Denatured speciality epoxy resin |
| Conformed RoHS | Conformed | Conformed |
| High resistance for corrosion and chemicals | B | A |
| Oil resistance | B | A |
| Temperature can be used (Only for coating) |
≦210℃ | ≦270℃ |
| Thickness of coating | 25μm | 15μm |
| Hardness Pencil hardness |
≧2H | ≧4H |
