| Customization: | Available |
|---|---|
| CAS No.: | 8012-95-1 |
| Formula: | None |
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Isothermal stepped quenching oil is a special cooling medium for heat treatment. With the continuous improvement of industrialization level in China, the industrial upgrading of heat treatment industry is imperative, and higher requirements will be put forward for the quenching cooling medium in the key link. Therefore, reasonable and scientific allocation of isothermal stepped quenching oil has an important impact on reducing environmental pollution, improving product quality and enhancing the comprehensive competitiveness of heat treatment industry. Kerun's Isothermal stepped quenching oil has a high flash point, which can realize Martempering quenching, significantly reduce the quenching deformation of complex shaped workpieces, effectively improve the product precision and reduce the processing margin of the workpieces, significantly reduce the production cost, and the surface of workpieces after quenching is easy to clean, with excellent thermal oxidation stability and long service life under high temperature conditions. During many years of service in bearing industry, Kerun made deep studies in the two major problems of the heat treatment of bearing, the deformation and the brightness. On this basis, the KR468G bearing quenching oil is developed, which is suitable for the quenching of the inner and outer race of the bearing, effectively reduce the change of the ovality during the cooling of the bearing race and keep the good surface brightness.
1,Short vapor film stage, fast cooling at high temperature, and relatively slow cooling at low temperature, which entitle the bearing race with high and uniform surface hardness and enough hardening depth as well as control the deformation of the race.
| Item | KR468G | Method |
| Moisture, ≤ | 0.03% | ASTM D6304 |
| Flash point (open cup), ≥ | 210°C | ASTM D92 |
| Kinematic viscosity (40°C) | 45-75 mm2/s | ASTM D7279 |
| Corrosion (Copper sheet 100°C×3h), ≤ | 1 | ASTM D130 |
| Acid value, ≤ | 0.3 mgKOH/g | ASTM D664 |
| Thermal oxidation stability, viscosity ratio, ≤ | 1.25 | SH/T 0219 |
| Max. typical cooling rate @ 100°C, static | 85°C /s | ISO 9950 |
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