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Isothermal Classification Quenching Oil KR4188

It can significantly reduce quenching distortion of thin-walled and complex-shaped components, such as automotive gears, motorcycle gears, clutch plates, and bearing rings, thereby improving product accuracy, reducing machining allowances, and substantially lowering production costs.

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Category: Isothermal Classification Quenching Oil, Quenching Oil

Product Details

Advantages

● Short vapor film stage, moderate cooling rate at high temperatures, and a slower cooling rate at low temperatures, enabling high and uniform surface hardness with sufficient hardening depth while effectively controlling quenching distortion;
● Excellent thermal oxidation stability, maintaining consistent cooling characteristics over long-term use with extended service life;
● Excellent brightening performance, low oil carry-over consumption, and reduced operating costs.

Technical Specifications

Model	KR4188
Water Content	≤ 0.03%
Flash Point	(open, ℃) ≥ 240
Max Cooling Rate	(℃/s, 60℃) 77
Kinematic Viscosity	(40℃) mm²/s 115
Typical Applications	Suitable for quenching various medium and low alloy steels, carburizing steels, and other workpieces with strict requirements for distortion control.

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.