The book pays the main attention to materials savings, increasing service life of machine components and tools, decreasing distortion, and environment improvement. All of these can be done by creating surface insulating layer which is formed automatically during quenching steel parts in water polymer solutions of inverse solubility. Uniform and intensive quenching of steel parts is achieved due to presence of insulating layer that drops the initial heat flux density below the critical value of qcr1. The austempering via cold liquid can be easily performed due to the self - regulated thermal process during quenching. The results of investigations can be used by students, engineers and scientists.