Beijing Sifang SK-3 Diffusion Pump Oil
Sifang Brand diffusion pump oil adopt paraffinic mineral oil fractions as raw material, after deep purification of its components, then excised molecular distillation fraction and degassed in a high-vacuum , precise temperature control can effectively guarantee the cut fractions, ensure the diffusion pump can quickly vaporize and condense during working, resulting in high-speed jet stream, greatly improved the pumping speed and vacuum degree of the diffusion pump.
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Sifang Brand diffusion pump oil adopt paraffinic mineral oil fractions as raw material, after deep purification of its components, then excised molecular distillation fraction and degassed in a high-vacuum , precise temperature control can effectively guarantee the cut fractions, ensure the diffusion pump can quickly vaporize and condense during working, resulting in high-speed jet stream, greatly improved the pumping speed and vacuum degree of the diffusion pump.
Sifang brand diffusion pump oil has a low ultimate pressure at work, high pumping speed and good oxidation resistance. Can be widely used in optics, electronics, vacuum metallurgy, vacuum coating and other aspects of the defense industry for metal diffusion pump and glass diffusion pump.
Technical Parameters:
| Item | Quality index | Test method | |||
| Viscosity grade (According to GB3141) | 46(No.1) | 68(No.2) | 100(No.3) | ||
| Kinematic viscosity (40℃).mm²/S | 41.4 ～50.6 |
61.2 ～74.8 |
90 ～110 |
GB/T265 | |
| Average molecular weight | Not more than | 380 | 420 | 450 | SH/T0220 AppendixB |
| Chroma.No. | Not more than | 0.5 | 1.0 | 2.0 | GB/T6540 |
| Pour point.℃ | Not lower than | -9 | -9 | -9 | GB/T3535 |
| Flash point (opening).℃ | Not lower than | 220 | 230 | 250 | GB/T3536 |
| Mechanical impurities.% | No | No | No | GB/T511 | |
| Moisture content.% | Not more than | No | No | No | GB/T260 |
| neutralization value.mgKOH/g | Not more than | 0.01 | 0.01 | 0.01 | GB/T4945 |
| Ash content .% | Not more than | 0.005 | 0.005 | 0.005 | GB/T508 |
| Carbon Residue.% | Not more than | 0.02 | 0.03 | 0.05 | GB/T268 |
| corrosion test (coppr sheet.100℃.3h).grade | Not more than | 1 | 1 | 1 | GB/T5096 |
| Saturated vapor pressure (20℃).kPa | Not more than | 5.0 X 10-9 |
1.0 X 10-9 |
5.0 X 10-10 |
GB/T029310 |
| Ultimate pressure (Total pressure).kPa | Not more than | 7.0 X 10-8 |
5.0 X 10-8 |
3.0 X 10-8 |
GB/T0294 |
| Thermal stability (150℃.24h) | Report | Report | Report | Appendix A | |
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