Development of new heat-treatment methods for rail at OAO Nizhnetagil’skii Metallurgicheskii Kombinat |
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| Authors: | V V Stakanchikov G A Galitsyn A B Dobuzhskaya E V Belokurova V V Matveev |
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| Affiliation: | 1.OAO Nizhnetagil’skii Metallurgicheskii Kombinat (NTMK),Nizhnii Tagil,Russia;2.OAO Ural’skii Institut Metallov,Yekaterinburg,Russia |
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| Abstract: | The selection of coolants for rail quenching at OAO Nizhnetagil’skii Metallurgicheskii Kombinat (NTMK) is considered. Thermohardening
in aqueous polymer solution or hot water has been developed and tested. Economically alloyed steel may be used for rail manufacture
after thermal hardening by compressedair cooling. The microstructure of disperse plastic pearlite is formed in three-stage
quenching, with pearlite production in the surface layers of the rail during the first two stages. |
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