Ultra-fast Quenching oil KR108
When conventional quenching oils are used for thick, large-sized workpieces or components with poor hardenability, problems such as soft spots, insufficient hardness, and inadequate case hardening depth may often occur. KERUN® KR108 Super Quenching Oil features a faster cooling rate than comparable quenching oils, effectively preventing these issues and achieving high, uniform surface hardness with sufficient hardening depth.
Product Details
Advantages
● Short vapor blanket stage, with fast cooling rates in the high- and medium-temperature stages and an appropriate cooling rate at the low-temperature stage;
● For medium and large-sized workpieces, it achieves high and uniform surface hardness with sufficient hardening depth while effectively controlling quenching distortion;
● Excellent thermal oxidation stability, ensuring a long service life;
● Stable performance, low oil drag-out loss, and reduced operating costs.
Technical Specifications
| Model | KR108 |
|---|---|
| Water Content | ≤ 0.03% |
| Flash Point | (open, ℃) ≥ 170 |
| Max Cooling Rate | (℃/s, 60℃) 108 |
| Kinematic Viscosity | (40℃) mm²/s 11-15 |
| Typical Applications | Suitable for small and medium-sized carburized components made of medium-to-low hardenability steels, such as 20CrMo, 20CrMnTi, and 20CrNiMo, where strict requirements are imposed on core hardness and microstructure, including applications such as piston pins and steering arm shafts. Suitable for small and medium-sized quenched and tempered components made of medium-to-high hardenability steels, such as 40Cr and 42CrMo, including connecting rods and large high-strength fasteners. |
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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