Quenching refers to the process of rapid cooling of steel components after heating for sufficient time at a certain temperature to impart strength and hardness. The media used for quenching include water, mineral oil, molten salt, brine solutions and synthetic oils, but mineral oil based quenching medium find the widest application because of the following benefits.
- Control is easier and uniform hardness can be achieved
- Suitable for large scale applications
- These oils are non corrosive and non toxic. Lodha grades are specially formulated from highly refined mineral oils with additives and have the following characteristics
- Excellent thermal stability
- Good oxidation and chemical stability
- Low volatility
- High flash and fire point.