RU2001132087A - METHOD FOR IMPROVING MAGNETIC PROPERTIES OF TEXTURED ELECTROTECHNICAL SILICON STEEL SHEETS BY LASER PROCESSING - Google Patents

METHOD FOR IMPROVING MAGNETIC PROPERTIES OF TEXTURED ELECTROTECHNICAL SILICON STEEL SHEETS BY LASER PROCESSING

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Publication number
RU2001132087A
RU2001132087A RU2001132087/02A RU2001132087A RU2001132087A RU 2001132087 A RU2001132087 A RU 2001132087A RU 2001132087/02 A RU2001132087/02 A RU 2001132087/02A RU 2001132087 A RU2001132087 A RU 2001132087A RU 2001132087 A RU2001132087 A RU 2001132087A
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RU
Russia
Prior art keywords
strip
laser beam
preceding paragraphs
magnetic properties
laser
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RU2001132087/02A
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Russian (ru)
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RU2238340C2 (en
Inventor
Габор БАН
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Аччай Спечиали Терни С.П.А.
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Priority claimed from IT1999RM000334A external-priority patent/IT1306157B1/en
Application filed by Аччай Спечиали Терни С.П.А. filed Critical Аччай Спечиали Терни С.П.А.
Publication of RU2001132087A publication Critical patent/RU2001132087A/en
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Publication of RU2238340C2 publication Critical patent/RU2238340C2/en

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Claims (13)

1. Способ улучшения магнитных свойств листов текстурированной электротехнической кремнистой стали посредством лазерной обработки, в котором текстурированную кремнистую стальную полосу, подвергнутую отжигу для вторичной рекристаллизации и имеющую обычные конечные покрытия, обрабатывают лазером непрерывного излучения, имеющим длину волны 10,46 мкм, путем непрерывного сканирования полосы при движении, в общем, в поперечном направлении относительно направления движения полосы, отличающийся тем, что предварительно выбранные технологические параметры: удельная энергия излучения, время выдержки и расстояние между двумя последовательными дорожками лазерного луча на стальном листе, регулируют одновременно и непрерывно соответственно в диапазонах 0,1-25 мДж/мм2, 1×10-6-1×10-2 с, 2-12 мм для оптимизации улучшения, по меньшей мере, одного из магнитных свойств полосы, выбранных между индукцией и потерями в сердечнике, непрерывно измеряемых перед и после обработки лазерным лучом без повреждения указанных покрытий.1. A method of improving the magnetic properties of sheets of textured electrical silicon steel by laser treatment, in which a textured silicon steel strip, annealed for secondary recrystallization and having the usual final coatings, is treated with a cw laser having a wavelength of 10.46 μm by continuously scanning the strip when moving, in General, in the transverse direction relative to the direction of movement of the strip, characterized in that the pre-selected technological Some parameters: specific radiation energy, exposure time, and the distance between two consecutive tracks of the laser beam on a steel sheet, are controlled simultaneously and continuously, respectively, in the ranges of 0.1-25 mJ / mm 2 , 1 × 10 -6 -1 × 10 -2 s , 2-12 mm to optimize the improvement of at least one of the magnetic properties of the strip, selected between induction and core loss, continuously measured before and after processing with a laser beam without damaging these coatings. 2. Способ по п.1, отличающийся тем, что удельная энергия излучения находится в диапазоне 2-8 мДж/мм2.2. The method according to claim 1, characterized in that the specific radiation energy is in the range of 2-8 mJ / mm 2 . 3. Способ по п.2, отличающийся тем, что удельная энергия излучения находится в диапазоне 3-5 мДж/мм2.3. The method according to claim 2, characterized in that the specific radiation energy is in the range of 3-5 mJ / mm 2 . 4. Способ по любому из предыдущих пунктов, отличающийся тем, что время выдержки составляет 1×10-5-1×10-3 с.4. The method according to any one of the preceding paragraphs, characterized in that the exposure time is 1 × 10 -5 -1 × 10 -3 s. 5. Способ по п.4, отличающийся тем, что время выдержки составляет 1-8×10-4c.5. The method according to claim 4, characterized in that the exposure time is 1-8 × 10 -4 s. 6. Способ по любому из предыдущих пунктов, отличающийся тем, что расстояние между двумя последовательными линиями составляет 3,5-8 мм.6. The method according to any one of the preceding paragraphs, characterized in that the distance between two consecutive lines is 3.5-8 mm. 7. Способ по п.6, отличающийся тем, что расстояние между двумя последовательными линиями поддерживается на 10-20% меньше, чем средний размер кристалла.7. The method according to claim 6, characterized in that the distance between two consecutive lines is maintained at 10-20% less than the average crystal size. 8. Способ по любому из предыдущих пунктов, отличающийся тем, что скорость сканирования лазерным лучом поверхности полосы составляет 800-10000 м/мин.8. The method according to any one of the preceding paragraphs, characterized in that the laser beam scanning speed of the strip surface is 800-10000 m / min. 9. Способ по п.8, отличающийся тем, что скорость сканирования полосы составляет 1500-6000 м/мин.9. The method according to claim 8, characterized in that the scanning speed of the strip is 1500-6000 m / min. 10. Способ по любому из предыдущих пунктов, отличающийся тем, что поперечные размеры лазерного луча или длина пятна составляют 1-60 мм.10. The method according to any one of the preceding paragraphs, characterized in that the transverse dimensions of the laser beam or the length of the spot are 1-60 mm 11. Способ по п.10, отличающийся тем, что поперечные размеры лазерного луча составляют 5-50 мм, причем типовые значения составляют 7-40 мм.11. The method according to claim 10, characterized in that the transverse dimensions of the laser beam are 5-50 mm, and typical values are 7-40 mm. 12. Способ по любому из предыдущих пунктов, отличающийся тем, что скорость вращения многоугольного зеркала оптической системы лазера составляет 100-10000 об/мин.12. The method according to any one of the preceding paragraphs, characterized in that the rotation speed of the polygonal mirror of the optical system of the laser is 100-10000 rpm 13. Способ по п.12, отличающийся тем, что скорость вращения зеркала составляет 600-6000 об/мин.13. The method according to p. 12, characterized in that the speed of rotation of the mirror is 600-6000 rpm
RU2001132087A 1999-05-26 2000-05-19 Method for improving magnetic qualities of textured electrical silicon steel sheets by laser treatment RU2238340C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM99A000334 1999-05-26
IT1999RM000334A IT1306157B1 (en) 1999-05-26 1999-05-26 PROCEDURE FOR THE IMPROVEMENT OF MAGNETIC CHARACTERISTICS OF SILICON STEEL GRAIN STEEL ORIENTED BY TREATMENT

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RU2001132087A true RU2001132087A (en) 2003-08-20
RU2238340C2 RU2238340C2 (en) 2004-10-20

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US (1) US6666929B1 (en)
EP (1) EP1200636B1 (en)
JP (1) JP2003500541A (en)
KR (1) KR100658197B1 (en)
CN (1) CN1221673C (en)
AT (1) ATE246260T1 (en)
AU (1) AU5524900A (en)
BR (1) BR0010715A (en)
CZ (1) CZ298905B6 (en)
DE (1) DE60004244T2 (en)
IT (1) IT1306157B1 (en)
PL (1) PL192135B1 (en)
RU (1) RU2238340C2 (en)
SK (1) SK285746B6 (en)
WO (1) WO2000073517A1 (en)

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