Keywords: heat treatment, quenching, hardenability, quenchant, quench tank,

In the heat treatment process, depending on the application of different quenching methods (induction quenching or immersion quenching), different aqueous quenchants will provide faster or slower cooling. It is very important to select the right quenchant to meet the metallurgical properties required for the application. Here are some tips on how to choose a water-based quenchant:

1. Part material: Chemistry and hardenability are important for the critical cooling rate of the application

2. Part material: choosing the right water-based quenchant and concentration requires minimum and maximum section thickness

3. Choose the right water-based quenchant for the application because there are different chemical compositions. The correct water-based quenchant will provide the required metallurgical properties.

4. Check the physical characteristics of the selected aqueous quenchant and the cooling curve data at their respective concentrations.

5. Filtration is important for aqueous quenchants to keep the solution as clean as possible.

6. Check the concentration of the aqueous quenchant by kinematic viscosity, refractometer or Greenlight. The concentration should be monitored regularly to ensure the heat dissipation capacity of the quenchant.

7. Check for contamination (hydraulic oil, etc.) that may adversely affect the cooling curve of the product and may affect the metallurgical properties.

8. Check the pH to ensure proper corrosion protection for parts and equipment.

9. Check for microorganisms that may contaminate the aqueous quenchant, which can cause unpleasant odors in the quench tank and working environment. Biostable aqueous quenchants are used if necessary.

10. Implement the supplier is proactive maintenance plan.

More Selection skills of water-based quenchant: www.quenchtank.com/view-253.html