HEAT TREATMENT OF STRUCTURAL STEEL FEATURING REVERSIBLE TEMPERING EMBRITTLEMENT

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to heat products made of structural steel, and can u043fu0440u0438u043cu0435u043du00a0u0442u044cu0441u00a0 engineering in heat parts working in the address bar u00a0u0445 high impact loads. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 - raising u0432u00a0u0437u043au043eu0441u0442u0438 while maintaining the strength and plasticity. the product of steel in oil with temperature u0437u043eu0445u0433u0441u0430 u0437u0430u043au0430u043bu0438u0432u0430u044eu0442 880 & deg; c,.released with 150 & deg; c at intervals of not less than 3 to 4 h, further u0432u044bu043fu043eu043bu043du00a0u044eu0442 final high leave in 450 - 550 & deg; c, followed by cooling. 1, table 2).