surface treatment technnology
Concerning the friction factor in Zero Chromium
1.Measurement on a flat board by a tribometer (Fukushima Prefecture High Tech Plaza)
TRIBOMETER made by Nanometric Technology Inc.
| Load | ：1N |
| Friction radius | ：5mm |
| Rotation speed | ：1rpm(0.05cm/sec) |
| Ball | ：SUJ2 make 6mmφsteel ball |
| n=3 | Zero Chromium S | hexavalent chromate |
| friction coefficient | 0.409 | 0.547 |
2.Measurement on a flat board by a tribogear (Tochigi Prefecture Industrial Technology Center)
Tribogear made by SHINTO scientific Co., Ltd.
| Friction | ：10mmφ SUS304 |
| Added load | ：50gf |
| Friction speed | ：10mm/sec |
| Measurement length | ：20mm |
| n=2 | Zero Chromium S | hexavalent chromate |
| friction coefficient | 0.451 | 0.376 |
3.Measurement by a screw fastener testing machine (Osaka Prefecture Industrial Technology General Research Center)
Screw fastener testing machine
| Ｍ | ：10×60 |
| Pace | ：1.5 |
| Circular seating surface | ：outer diameter 16.5 inner diameter 11.5 |
| n=5 | Zero Chromium S | hexavalent chromate | Zero Chromium SB | hexavalent black |
| coefficient | 0.300 | 0.304 | 0.366 | 0.256 |
| torque pressure(N・m) | 27.3 | 27.6 | 33.0 | 23.6 |
surface treatment technnology
- Zero Whisker S
- Zero Chromium
- Concerning hazardous substances in Zero Chromium
- Concerning surface resistance in Zero Chromium
- Concerning the friction factor in Zero Chromium
- Concerning the corrosion resistance of un plated areas
- Zinc plating
- Nickel plating
- Electroless nickel plating
- Tin plating
- Aluminum chemical conversion treatment
- System of keeping