SU350843A1 - METHOD OF THERMAL TREATMENT OF RAILS - Google Patents
METHOD OF THERMAL TREATMENT OF RAILSInfo
- Publication number
- SU350843A1 SU350843A1 SU1478589A SU1478589A SU350843A1 SU 350843 A1 SU350843 A1 SU 350843A1 SU 1478589 A SU1478589 A SU 1478589A SU 1478589 A SU1478589 A SU 1478589A SU 350843 A1 SU350843 A1 SU 350843A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- rails
- cooling
- thermal treatment
- cooled
- water
- Prior art date
Links
- 238000007669 thermal treatment Methods 0.000 title 1
- 238000001816 cooling Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching Effects 0.000 description 2
- 238000000844 transformation Methods 0.000 description 2
- 230000001131 transforming Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Изобретение относитс The invention relates to
к термической обработке рельсов. обработк;to heat treated rails. processing;
ИзвестеН способ термической рельсов, включающий нагрев иод закалку, охлаждение водо-воздушной смесью и последующий отпуск (самоотиуск).LimeN is a method of thermal rails, including heating iodine quenching, cooling with a water-air mixture and subsequent tempering (self-tapping).
Предложенный способ отличаетс от пзвестного тем, что охлаждение рельса производ т нустотелым.и водоо.хлаждаемыми элементами .The proposed method differs from the well-known fact in that the cooling of the rail is carried out by nonsteel and water-cooled elements.
Это позвол ет получить необходимую скорость охлаждени в интервалах температур фазовых превращений, в результате чего повыщаетс эксплуатационна стойкость рельсов .This makes it possible to obtain the required cooling rate in the temperature ranges of phase transformations, as a result of which the operational stability of the rails increases.
Нагретый под закалку рельс охлаждают пустотелыми водоохлаждаемыми элементами из вы.сокотеплопроводного материала, например меди, имеющими форму ирофил рельса. Охлаждение рельса производ т со скоростью, обеспечивающей получение в закаленном слое структуры, состо щей из продуктов распада аустента - сорбита или троостосорбита сHeated rails for hardening are cooled by hollow water-cooled elements made of highly heat-conducting material, such as copper, having the form of a rail trophil. The rail is cooled at a rate that provides a structure in the hardened layer consisting of austenta-sorbitol or troostosorbitite decomposition products with
пластинчатой формой карбндов. При прекращении охлаждени в .металле остаетс достатоЧПое количество теила, обесиечивающее протекаете процесса самоотпуска. Дл регулировани процесса охлаждени в интервале температур фазовых превращений рельс предварительно можно охлаждать до 700°С водо-воздушной смесью. Возможность регулировани в широких пределах скорости охлаждени позвол ет производить закалку рельсов , .изготовленных как -из углеродистых, так и из легированных сталей, с получением твердости в пределах 300-400 HRB. lamellar form of carbs. When cooling is stopped in the metal, there is a sufficient amount of teile, which relieves the process of self-tempering. In order to regulate the cooling process in the temperature range of phase transformations, the rails can be previously cooled to 700 ° C with an air / air mixture. The ability to regulate over a wide range the rate of cooling allows the quenching of rails made from carbon and alloyed steels to obtain hardness in the range of 300-400 HRB.
1515
Предмет изобретени Subject invention
Способ термической обработки рельсов, включающий нагрев, охлаждение и последующий отпуск, отличающийс тем, что, с целью повышени эксплуатационной стойкости , охлаждение производ т н)стотелыми водоохлаждаемыМИ элементами.The method of heat treatment of rails, including heating, cooling and subsequent tempering, characterized in that, in order to increase operational durability, cooling is performed by using the water cooled body elements.
Publications (1)
Publication Number | Publication Date |
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SU350843A1 true SU350843A1 (en) |
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