SU461136A1 - The method of decarburization of electrical steel - Google Patents
The method of decarburization of electrical steelInfo
- Publication number
- SU461136A1 SU461136A1 SU1850385A SU1850385A SU461136A1 SU 461136 A1 SU461136 A1 SU 461136A1 SU 1850385 A SU1850385 A SU 1850385A SU 1850385 A SU1850385 A SU 1850385A SU 461136 A1 SU461136 A1 SU 461136A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- decarburization
- electrical steel
- annealing
- steel
- minutes
- Prior art date
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- Manufacturing Of Steel Electrode Plates (AREA)
Description
1one
Изобретение относитс к металлургии, в частности к способам производства электротехнической велегированной стали.The invention relates to metallurgy, in particular, to methods for the production of electrical veleyed steel.
Известен способ обезуглероживани электротехнической стали, включающий черный отжиг с .выдержкой ори 780-800°С и светлый отжиг после прокатки при 800-850°С.There is a known method for decarburization of electrical steel, which includes black annealing with an ori-out of 780-800 ° C and light annealing after rolling at 800-850 ° C.
С целью создани слоистой структуры с мелким зерном на .поверхности и крупным внутри, повышени магнитных и механических свойств предложен способ, по которому отжиг провод т в две ступени: с выдержкой в течение 60 мин при 700-720°С, а затем с выдержкой в течение 40 мин при 750-850°С.In order to create a layered structure with a fine grain on the surface and large inside, to increase the magnetic and mechanical properties, a method has been proposed by which annealing is carried out in two stages: with an exposure for 60 min at 700-720 ° C, and then with an exposure in for 40 min at 750-850 ° C.
Предложенный способ осуществл ют следующим образом. Гор чекатаную полосу электротехнической нелегироваганой стали толщиной 2,2 мм подвергают обезуглероживающему отжигу при 700-720°С с выдержкой в течение 60 мин, нагревают за 10 мин до 750- 850°С и выдерживают в течение 40 мин при данной температуре.The proposed method is carried out as follows. The hot rolled 2.2 mm non-alloyed steel electrical strip is subjected to decarburization annealing at 700-720 ° C with a holding time of 60 minutes, heated to 750-850 ° C for 10 minutes and maintained for 40 minutes at this temperature.
Электротехническа нелегирова.нна сталь при толщине поверхностного сло 0,5 мм имеет структуру сло 5-6 баллов, а при толщине внутреннего сло в 1 мм - 2-3 балла.Electrotechnical non-alloyed steel with a surface layer thickness of 0.5 mm has a layer structure of 5-6 points, and with an inner layer thickness of 1 mm - 2-3 points.
Режим термообработки: отжиг .при 720°С, выдержка 60 мин, отжиг при 800°С, выдержка 40 мин. Содержание углерода 0,006-0,008%, коэрцитивна сила 0,36-0,54э. Поверхность при загибе па 90° гладка .Heat treatment mode: annealing at 720 ° С, holding 60 min, annealing at 800 ° С, holding 40 min. Carbon content is 0.006-0.008%, coercive force 0.36-0.54e. The bending surface of pa 90 ° is smooth.
Предмет изобретени Subject invention
Способ обезуглероживани электротехнической стали, включающий черный отжиг, отличающийс тем, что, с целью создани слоистой структуры с мелким зерном на поверхности и крупным .внутри, повышени магнитных и механических свойств, отжиг провод т в две ступени: с выдержкой в течение 60 мин при 700-720°С, а затем с выдержкой в течение 40 мин при 750-850°С.The method of decarburization of electrical steel, including black annealing, characterized in that, in order to create a layered structure with a fine grain on the surface and large inside, to increase the magnetic and mechanical properties, the annealing is carried out in two steps: with a holding time of 60 minutes at 700 -720 ° C, and then with an exposure for 40 min at 750-850 ° C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1850385A SU461136A1 (en) | 1972-11-27 | 1972-11-27 | The method of decarburization of electrical steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1850385A SU461136A1 (en) | 1972-11-27 | 1972-11-27 | The method of decarburization of electrical steel |
Publications (1)
Publication Number | Publication Date |
---|---|
SU461136A1 true SU461136A1 (en) | 1975-02-25 |
Family
ID=20533164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1850385A SU461136A1 (en) | 1972-11-27 | 1972-11-27 | The method of decarburization of electrical steel |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU461136A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4326899A (en) | 1979-09-17 | 1982-04-27 | United States Steel Corporation | Method of continuous annealing low-carbon electrical sheet steel and duplex product produced thereby |
-
1972
- 1972-11-27 SU SU1850385A patent/SU461136A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4326899A (en) | 1979-09-17 | 1982-04-27 | United States Steel Corporation | Method of continuous annealing low-carbon electrical sheet steel and duplex product produced thereby |
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