SU378459A1 - METHOD OF THERMAL TREATMENT OF RELBS '' '-! LYa "" / IF - Google Patents
METHOD OF THERMAL TREATMENT OF RELBS '' '-! LYa "" / IFInfo
- Publication number
- SU378459A1 SU378459A1 SU1601234A SU1601234A SU378459A1 SU 378459 A1 SU378459 A1 SU 378459A1 SU 1601234 A SU1601234 A SU 1601234A SU 1601234 A SU1601234 A SU 1601234A SU 378459 A1 SU378459 A1 SU 378459A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- relbs
- lya
- thermal treatment
- tempering
- rails
- Prior art date
Links
Landscapes
- Heat Treatment Of Articles (AREA)
Description
1one
Изобретение относитс « способам термической обработки рельсов.This invention relates to "rail heat treatment methods.
Известен способ термической обработки рельсов, включающий печной напрев, закалку и отпуск.There is a method of heat treatment of rails, including furnace heating, quenching and tempering.
Цель способа - предотвращение образовани треш,ин и изломов в рельсовых накладках .The purpose of the method is to prevent the formation of trash, in and kinks in rail plates.
Это достигаетс тем, что после отпуска рельсов провод т дополнительный поверхностный отпуск нижних граней головки рельсов ;на длине 25-50 мм от торцов при 500-700° С.This is achieved by the fact that after tempering the rails an additional surface tempering of the lower edges of the rail head is carried out: at a length of 25-50 mm from the ends at 500-700 ° C.
Ол.исываемый способ .включает печной нагрев рельсов, объемную или поверхностную закалку по -всей длине, отпуск или самоотпуск и местный разупрочн ющий отпуск нижних граней головки на длине 25-50 мм от торцов рельсов при 500-700° С, осуществл емый , налрлмер, в индукционных устано вках и обеспечивающий твердость не болееOld-fashioned method. Includes furnace heating of rails, volumetric or surface hardening in its entire length, tempering or self-tempering, and local softening tempering of the lower edges of the head at a length of 25-50 mm from the ends of the rails at 500-700 ° С, carried out, lash , in induction installations and providing hardness not more than
285 Н в на глубине до 2-5 мм от поверхности грани.285 N in at a depth of 2-5 mm from the surface of the face.
Благодар снижению твердости нижних граней концов рельсов, обуславли/вающему 5 прира-ботку металла рельсов к металлу рельсовых накладок, применение описываемого способа позвол ет предотвратить образование трещин и изломов в рельсовых на.кладках и увеличить срок службы последних.By reducing the hardness of the lower edges of the rail ends, which caused / 5 the use of the metal of the rails to the metal of the rail pads, the use of the described method prevents the formation of cracks and fractures in the rail plates and increases the service life of the latter.
10ten
Иредмет изобретени Iredmet invention
Способ термической обработки рельсов, включающий закалку с печного нагрева иThe method of heat treatment of rails, including hardening with furnace heating and
отпуск, отличающийс тем, что, с целью предотвращени образовани трещин и изломов в рельсовых накладках, после отпуска рельсов провод т дополнительный поверхностный отпуск нижних граней головки рельсовtempering, characterized in that, in order to prevent the formation of cracks and kinks in rail pads, after tempering the rails, additional surface tempering of the lower edges of the rail head is carried out
на длине 25 - 50 мл1 от торцов при 500-700 С.at a length of 25-50 ml1 from the ends at 500-700 C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1601234A SU378459A1 (en) | 1970-12-21 | 1970-12-21 | METHOD OF THERMAL TREATMENT OF RELBS '' '-! LYa "" / IF |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1601234A SU378459A1 (en) | 1970-12-21 | 1970-12-21 | METHOD OF THERMAL TREATMENT OF RELBS '' '-! LYa "" / IF |
Publications (1)
Publication Number | Publication Date |
---|---|
SU378459A1 true SU378459A1 (en) | 1973-04-18 |
Family
ID=20461695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1601234A SU378459A1 (en) | 1970-12-21 | 1970-12-21 | METHOD OF THERMAL TREATMENT OF RELBS '' '-! LYa "" / IF |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU378459A1 (en) |
-
1970
- 1970-12-21 SU SU1601234A patent/SU378459A1/en active
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