SU389156A1 - METHOD OF THERMAL TREATMENT OF ELECTROTECHNICAL - Google Patents
METHOD OF THERMAL TREATMENT OF ELECTROTECHNICALInfo
- Publication number
- SU389156A1 SU389156A1 SU1657292A SU1657292A SU389156A1 SU 389156 A1 SU389156 A1 SU 389156A1 SU 1657292 A SU1657292 A SU 1657292A SU 1657292 A SU1657292 A SU 1657292A SU 389156 A1 SU389156 A1 SU 389156A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- annealing
- thermal treatment
- electrotechnical
- carried out
- protective gas
- Prior art date
Links
Landscapes
- Manufacturing Of Steel Electrode Plates (AREA)
Description
II
Изобретеиие относитс к металлургической промышленности, в частности к способам термической обработки электротехнических сталей .The invention relates to the metallurgical industry, in particular to methods for the thermal treatment of electrical steels.
Известен способ термической обработки электротехнической стали, включающий рекристаллизационный отжиг при температурах до 600° С, конечный отжиг при температурах до 800° С и последующее охлаждение.The known method of heat treatment of electrical steel, including recrystallization annealing at temperatures up to 600 ° C, the final annealing at temperatures up to 800 ° C and subsequent cooling.
Дл |Сиижеии удельных лотерь на перемагничиваиие ио предложенному способу термической обработки .промежуточный отжиг провод т в окислительной атмосфере с последующей продувкой защитным газом состава 95% и более азота и до 5% водорода, а охлаждение до 600° С после конечного отжига провод т под колпаком, далее до 180°С под муфелем, далее на воздухе.For | Specific lottery on the reversal of the proposed method of heat treatment. Intermediate annealing is carried out in an oxidizing atmosphere with subsequent purging with protective gas of 95% or more nitrogen and up to 5% of hydrogen, and cooling to 600 ° C after the final annealing is carried out under a cap further to 180 ° C under the muffle, then in the air.
Способ заключаетс в следующем.The method is as follows.
Ленту из электротехнической стали подвергают промежуточному рекристаллизациониому отжигу при температурах до 600° С в окислительной атмосфере (на воздухе, в парах воды, во влажргом азотном газе) с последующ-ей продувкой защитным газом состава 95%, и более азота и до 5% водорода. Затем ленту подвергают отжигу при 720-820° С с выдержкой до 20 час, далее лепту охлаждают до Electrical steel tape is subjected to intermediate recrystallization annealing at temperatures up to 600 ° C in an oxidizing atmosphere (in air, in water vapor, in wet nitrogen gas) followed by purging with protective gas of 95% and more nitrogen and up to 5% hydrogen. Then the tape is subjected to annealing at 720-820 ° C with a shutter speed of up to 20 hours, then the mite is cooled to
600° С под колпаком, до 180° С под муфелем, далее на воздухе.600 ° C under the hood, up to 180 ° C under the muffle, then in the air.
Предложенный способ снижает содерл :ание углерода в стали с 0,03 до 0,009%, исключает при отжиге применение взрывоопасных водородосодержащих атмосфер. Потери на перемагиичивание (Pis/so) в стали, обработанной по предложенному способу, не превышают 6,0 вт/кг.The proposed method reduces the content of carbon in steel from 0.03 to 0.009%, excludes the use of explosive hydrogen-containing atmospheres during annealing. The reversal loss (Pis / so) in the steel treated by the proposed method does not exceed 6.0 W / kg.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1657292A SU389156A1 (en) | 1971-05-17 | 1971-05-17 | METHOD OF THERMAL TREATMENT OF ELECTROTECHNICAL |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1657292A SU389156A1 (en) | 1971-05-17 | 1971-05-17 | METHOD OF THERMAL TREATMENT OF ELECTROTECHNICAL |
Publications (1)
Publication Number | Publication Date |
---|---|
SU389156A1 true SU389156A1 (en) | 1973-07-05 |
Family
ID=20475418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1657292A SU389156A1 (en) | 1971-05-17 | 1971-05-17 | METHOD OF THERMAL TREATMENT OF ELECTROTECHNICAL |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU389156A1 (en) |
-
1971
- 1971-05-17 SU SU1657292A patent/SU389156A1/en active
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