Heat treatment quenching oil

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Classification, performance characteristics and application scope of heat treatment quenching oil

Heat treatment oil is a kind of treatment oil with strong cooling performance and good oxidation stability. It can be divided into ordinary quenching oil and fast quenching oil. Quenching oil is a kind of process oil used as quenching medium. Cooling performance is an important performance of quenching medium. Its quality directly affects the quality of quenching parts. Good cooling performance can ensure that the parts after quenching have certain hardness and qualified The metallographic structure can prevent deformation and cracking of parts.

Understand the classification, performance characteristics and application range of quenching oil:

1. Common quenching oil: it has strong cooling performance and good oxidation stability. It is suitable for the quenching of bearing steel, tool mould steel, alloy steel, carburized steel and other workpieces in salt bath furnace or protective atmosphere. The best temperature is 50-80 ℃.

2. Fast quenching oil: fast cooling speed, good oxidation stability, medium brightness, suitable for quenching of high cooling speed quenching and tempering, carburizing and other parts, large forging parts, large gears and quenching press. The service temperature is 20-80 ℃.

3. Over speed quenching oil: it has faster cooling speed and good oxidation stability. It is suitable for heating quenching, carburizing or carbonitriding quenching of large parts in automobile, bearing, mining machinery, metallurgical machinery and tool and mould industries, as well as quenching of medium carbon steel and other types of alloy steel. The service temperature is 20-60 ℃.

4. Vacuum quenching oil: low saturated steam pressure, good cooling performance, good brightness, suitable for vacuum quenching of bearing steel, die steel, large and medium-sized aviation structural steel and other materials, and the air in the oil should be removed under vacuum during initial use. The service temperature is 20-80 ℃.

5. Fast bright quenching oil: fast cooling speed, good oxidation stability and brightness. It is suitable for quenching bearing steel, die steel and other structural steel in protective atmosphere. The service temperature is 20-80 ℃.

6. Isothermally graded quenching oil: it has good cooling performance and small deformation of parts. It is suitable for quenching inner and outer circles of bearings made of bearing steel and carburizing steel, precision parts, automobile gears, half shafts and other workpieces as well as easily deformed parts. The service temperature is 120 ℃ for No.1 and 150 ℃ for No.2.

Learm More: Vacuum Quenching Furnace