TY - JOUR AU1 - Rudakova, N. AU2 - Sheremeta, B. AU3 - Tkachuk, T. AB - N. Ya. Rudakova, B. K. Sheremeta, and T. I. Tkachuk UDC 665.767:621.22/9(088.8) Water, brines, aqueous polymer solutions, mineral oils, and molten salts are normally used as liquid quenchants for steel parts. At present petroleum quenching oils are the most common since they possess a number of valuable properties, above all else providing mildness and uniformity in hardening, which makes it possible to reduce dangerous stresses and strains [i]. Until 1975 distilled and residual mineral oils of types 1-12A, 1-20A, 1-40A, 1-50A, and MS-20 were used as quenching oils and they were used primarily for hardening of parts of ex- pensive high-alloy steels. The tendency in the 40's toward the use of low-alloy steels re- quired the development of special quenching oils with increased cooling properties in the 650-400°C range. On the basis of the results of investigations first conducted abroad and then since the 70's in our country a large variety of such quenching oils has been developed. In the All-Union Scientific-Research, Design, and Construction Institute for Petrochem- icals in 1973 the special hardening oils MZM-16, MZM-26, and MZM-120, which are widely used in more than 60 plants of various branches of industry, were developed [2]. These oils have TI - The development and use of special quenching oils JF - Metal Science and Heat Treatment DO - 10.1007/BF00741866 DA - 2004-11-11 UR - https://www.deepdyve.com/lp/springer-journals/the-development-and-use-of-special-quenching-oils-5Ez07hH0U5 SP - 750 EP - 752 VL - 28 IS - 10 DP - DeepDyve ER -