Effect of molecular mass of UZSP-1 medium on its cooling capacity

1. The cooling capacity of UZSP-1 polymeric quenching medium is determined by the molecular mass (MM) of the copolymer. 2. With concentrations of more than 1.5% for the UZSP-1 solutions, their cooling capacity is virtually constant for a constant MM and temperature (<80°C). 3. To eliminate the rigorous effect of the temperature of the medium on its cooling capacity in both cases where HMW and LMW polymners are used, it is expedient to heat-treat the components in solutions with temperatures of 20–60°C; in this case, the LMW concentration of the UZSP-1 should be no less than 1.5%. 4. The HMW solutions of UZSP-1 are subject to "thermal shock;" in this connection, it is more perferable to use low-molecular-weight UZSP-1 to avoid frequent regeneration of the quenching bath.