In the practice polymers of inverse solubility are used to substitute oils with water solutions. As a rule, concentrations are: 5%, 10%, 30%. These concentrations are not optimal.
Optimal concentration creates optimal thickness of polymer layer due to inverse solubility and this layer completely eliminates local film boiling. Distortion of steel parts in this case is minimal.
I agree. Moreover, the initial heat flux density depends on thickness of steel parts. It means that thickness of polymer layer, which eliminates film boiling, is variable. However, a concept on optimal polymer layer is useful to understand the physics of the process during quenching in polymers with inverse solubility. The problem should be further investigated.
We use polymers of inverse solubility to eliminate local film boiling during quenching that decrease distortion of steel parts after their hardening.
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