Fast & Bright Quenching Oil KR238
With its high cooling rate and excellent stability, it is particularly suitable for the quenching of large-module gears, large cross-section bearing rings, bearing rolling elements, textile components, sewing machine parts, hardware tools, and other workpieces under protective atmosphere or controlled atmosphere conditions.
Product Details
Advantages
● Short vapor film stage, with fast cooling rates in the high- and medium-temperature ranges and an appropriate low-temperature cooling rate;
● For medium and large-sized workpieces, it can achieve high and uniform surface hardness with sufficient hardening depth, while effectively controlling quenching distortion;
● Excellent thermal oxidation stability and long service life;
● Stable performance, low oil carry-over consumption, and reduced operating costs.
Technical Specifications
| Model | KR238 |
|---|---|
| Water Content | ≤ 0.03% |
| Flash Point | (open, ℃) ≥ 190 |
| Max Cooling Rate | (℃/s, 60℃) 85 |
| Kinematic Viscosity | (40℃) mm²/s 28-40 |
| Typical Applications | Suitable for bright quenching of workpieces such as power tool components, oil pumps, fuel nozzles, prestressed anchorage wedges, automotive synchronizer powder metallurgy parts, gears, and other precision components. |
Storage Conditions
| Item | Requirements |
| Storage Temperature | 5–40°C. Indoor storage is recommended. Protect from freezing, as freezing may damage the polymer system. |
| Packaging & Container Requirements | Packaged in 200 L plastic drums with a net weight of 200 kg per drum; 25 kg plastic pails or 1,000 kg intermediate bulk containers (IBCs) may also be used. |
| Shelf Life | 2 years. After expiry, the product may only be used after it has been retested and confirmed to meet specifications. |
| Key Properties (KR9988) | Appearance: light yellow to pale red viscous liquid; pH (5% solution): 9.5–10.5; kinematic viscosity (10% solution at 40°C): 3.19 mm²/s. |
| Precautions | Nonflammable and presents no fire hazard; nevertheless, keep the container tightly sealed. If stored outdoors, place the drum horizontally to prevent water, dust, and other contaminants from entering. Retighten the cap immediately after dispensing. Check the concentration with a refractometer before use. PAG-containing products exhibit reverse solubility; polymer separation at elevated temperatures is normal, and the product can be restored by cooling and stirring. |
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KR218(H)
