SU212306A1 - - Google Patents
Info
- Publication number
- SU212306A1 SU212306A1 SU1080189A SU1080189A SU212306A1 SU 212306 A1 SU212306 A1 SU 212306A1 SU 1080189 A SU1080189 A SU 1080189A SU 1080189 A SU1080189 A SU 1080189A SU 212306 A1 SU212306 A1 SU 212306A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- deformation
- steel
- temperature
- austenization
- temperature range
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching Effects 0.000 description 3
- 230000000930 thermomechanical Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910000760 Hardened 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
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
СПОСОБ ТЕРМОМЕХАНИЧЕСКОЙ ОБРАБОТКИ СТАЛЕЙMETHOD OF THERMOMECHANICAL STEEL TREATMENT
В известных способах термомеханической обработки материал подвергают аустенизации, подстуживанию до межкритического интервала температур, деформации, закалке и отпуску .In the well-known methods of thermomechanical processing, the material is subjected to austenization, pressing to the intercritical temperature range, deformation, quenching, and tempering.
В описываемом способе предварительно закаленную сталь нагревают до межкритического интервала температур, т. е. до температуры, лежащей между точками Aci и Асз, деформируют и охлаждают.In the described method, pre-hardened steel is heated to the intercritical temperature range, i.e., it is deformed and cooled to the temperature between Aci and Asz points.
Такой способ повышает прочность материала и снижает температуру перехода в хрупкое состо ние по сравнению с обработанным на ту же прочность по обычному режиму термообработки , например, закаленному и отпущенному .This method increases the strength of the material and reduces the temperature of transition to brittle state compared to the treated for the same strength in the usual mode of heat treatment, for example, hardened and tempered.
Аустенизацию и закалку провод т по прин тому дл обрабатываемых марок сталей режиму .Austenization and hardening are carried out according to the regime accepted for the processed steel grades.
Температуру нагрева под деформацию, выдерл ку , степень деформации и скорость охлаждени после нее устанавливают в зависимости от химического состава стали.The temperature of heating for deformation, loosening, the degree of deformation and the rate of cooling after it are set depending on the chemical composition of the steel.
Например, дл стали марки 10Г2С1Д оптимальным вл етс .For example, for 10G2C1D steel, the optimum is.
1.Закалка в воду с температуры 940°С.1. Zakalka in water from a temperature of 940 ° C.
2.Нагрев до температуры 740°С, выдержка не менее 30 мин.2. Heating up to a temperature of 740 ° С, holding at least 30 minutes.
3.Деформаци путем прокатки со степенью обжати не менее 20о/о.3. Deformation by rolling with a degree of reduction of at least 20o / o.
4.Охлаждение на воздухе.4. Air cooling.
Данный способ примен ют дл сталей с низкой устойчивостью переохлажденной высокотемпературной фазы, например, низкоуглеродистых малолегированных сталей типа 09Г2, 10Г2С1Д и т. п.This method is used for low resistant steels of the supercooled high temperature phase, for example, low carbon low alloyed steels of 09G2, 10G2C1D type, etc.
Предмет изобретени Subject invention
Способ термомеханической обработки сталей , включающий аустенизацию, деформацию в межкритическом интервале температур и закалку , отличающийс тем, что, с целью снижени хладноломкости и повышени прочности , после аустенизации сталь сначала подвергают закалке, затем нагреву до межкритического интервала температур, деформации и охлаждению.The method of thermomechanical treatment of steels, including austenization, deformation in the intercritical temperature range and quenching, characterized in that, in order to reduce cold brittleness and increase strength, after austenization, the steel is first subjected to quenching, then heated to the intercritical temperature range, deformation and cooling.
Publications (1)
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SU212306A1 true SU212306A1 (en) |
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