For the manufacture of gears, carburizing in an integrated quench (IQ) furnace is a common heat treatment process and oil is the most commonly used quench medium. Flow patterns, temperature variations, etc can be caused within the batch due to distortion problems during the oil quench. Monitoring the temperature at various depths within the product and locations around the batch, can provide valuable data on the temperature profile of the part throughout the complete heating and cooling cycle. The  Oil Quench system is able to travel throughout the process to monitor the temperature.