METASU CR-U7L / I2
Sealer for trivalent chromium black passivation
• Finishing agent for trivalent chrome passivation that uses trivalent chrome.
• Produces a highly-reflective homogeneous black finish.
• Aging of the finishing agent does not degrade the performance and consistent quality is
ensured for a long period of time which allows for service life extension.
• Suitable for processing of pressed products and bolts.
• Maintenance is made simple as there is no negative effect on the equipment.
• Resistance to scratch and corrosion is enhanced.
• Conventional chromate equipment can be used.
Product specifications
Attributes
| Appearance | Dark green neutral liquid (METASU CR-U7L） Colorless transparent – slightly turbid neutral liquid (METASU CR-I2） |
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|---|---|---|---|---|---|---|---|
Bath makeup
| Chemicals used | Usage range | ||
|---|---|---|---|
| METASU CR-U7L | 100～250ml/L | ||
| METASU CR-I2 | 5～20ml/L | ||
Usage conditions
| Item | Range | Remarks | |||||
|---|---|---|---|---|---|---|---|
| Process temperature | 35～50℃ | ||||||
| Process time | 3-10 seconds | ||||||
| ｐH | 5.5～7.0 | Standard bath setup is pH6. | |||||
| Agitation | Air agitation or vibratory agitation are to be used. | ||||||
Replenish conditions
| Chemicals used | Replenishment reference (standard) | ||
|---|---|---|---|
| METASU CR-U7L | 100 ~ 250ml / basket (50Kg) | ||
| METASU CR-I2 | 5 ~ 20ml / basket (50Kg) | ||
| Caustic soda 25% | pH adjustment | ||
* Replenish according to drag-out amount.
Note: 50kg basket: approx. 1L drag-out/basket, 100kg basket: approx. 2L drag-out/basket.
Inquiries about the product
Feel free to contact us if you have any queries or matters to discuss.
