Abstract
In the paper an overview on elimination of any film boiling process during quenching in Poly (Alkilene) Glycol (PAG) solutions is widely discussed. Such elimination is possible due to
formation an insulating polymeric layer on the surface of quenched steel parts which decreases initial heat flux density below its critical value. An insulating polymeric layer accelerates cooling
process making it uniform and very stable. In such condition, physics and mathematical interpretation of quenching technologies is reliable and creates a basis for automation and software
design. The main attention in the paper is paid to mechanism of polymeric layer formation to accelerate hardening of optimal hardenability steel. All of this creates high surface compression
residual stresses, makes material ductile and super strengthened, decreases steel alloying and makes possible to switch from oils and melted alkalis to low concentration of water PAG solutions. Along with quenching optimal hardenability steel, it is shown that low and high temperature mechanical treatment combined with PAG solutions as a quenchant makes environment green.
Keywords
NA