RU2005128198A - METHOD FOR ROLLING BIG PIPES OF LARGE AND MEDIUM DIAMETERS FROM INGOTS AND PREPARATION OF ALLOYS BASED ON TITANIUM ON PIPELINE PLANTS WITH PILGRIM MILLS - Google Patents

METHOD FOR ROLLING BIG PIPES OF LARGE AND MEDIUM DIAMETERS FROM INGOTS AND PREPARATION OF ALLOYS BASED ON TITANIUM ON PIPELINE PLANTS WITH PILGRIM MILLS Download PDF

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Publication number
RU2005128198A
RU2005128198A RU2005128198/02A RU2005128198A RU2005128198A RU 2005128198 A RU2005128198 A RU 2005128198A RU 2005128198/02 A RU2005128198/02 A RU 2005128198/02A RU 2005128198 A RU2005128198 A RU 2005128198A RU 2005128198 A RU2005128198 A RU 2005128198A
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RU
Russia
Prior art keywords
rolling
temperature
feed
sleeve
pilgrim
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RU2005128198/02A
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Russian (ru)
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RU2315672C2 (en
Inventor
нов Анатолий Васильевич Сафь (RU)
Анатолий Васильевич Сафьянов
Александр Анатольевич Федоров (RU)
Александр Анатольевич Федоров
Валентин Иреклеевич Тазетдинов (RU)
Валентин Иреклеевич Тазетдинов
Исаак Иосифович Вольберг (RU)
Исаак Иосифович Вольберг
Игорь Александрович Романцов (RU)
Игорь Александрович Романцов
Николай Григорьевич Дановский (RU)
Николай Григорьевич Дановский
Борис Семенович Литвак (RU)
Борис Семенович ЛИТВАК
Леонид Игнатьевич Лапин (RU)
Леонид Игнатьевич Лапин
Кирилл Николаевич Никитин (RU)
Кирилл Николаевич Никитин
Сергей Александрович Андрюнин (RU)
Сергей Александрович Андрюнин
Валерий Александрович Головинов (RU)
Валерий Александрович Головинов
Валерий Андреевич Логовиков (RU)
Валерий Андреевич Логовиков
Николай Петрович Климов (RU)
Николай Петрович Климов
Константин Эдуардович Бубнов (RU)
Константин Эдуардович Бубнов
Александр Юрьевич Матюшин (RU)
Александр Юрьевич Матюшин
Original Assignee
ОАО "Чел бинский трубопрокатный завод" (RU)
ОАО "Челябинский трубопрокатный завод"
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Priority to RU2005128198/02A priority Critical patent/RU2315672C2/en
Publication of RU2005128198A publication Critical patent/RU2005128198A/en
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Publication of RU2315672C2 publication Critical patent/RU2315672C2/en

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Claims (9)

1. Способ прокатки передельных труб большого и среднего диаметров из слитков и заготовок сплавов на основе титана на трубопрокатных установках с пилигримовыми станами, включающий отливку слитков в вакуумно-дуговых печах с последующей ковкой их в заготовки, сверление центрального отверстия диаметром 100±5,0 мм, нагрев слитков и заготовок в муфелях в методических печах до температуры пластичности 1155-1180°С, прошивку их в гильзы в станах косой прокатки и прокатку передельных труб на пилигримовых станах, отличающийся тем, что прокатку труб на пилигримовом стане при установившемся процессе производят с подачей гильзы в очаг деформации m=20-40 мм и вытяжкой μ=2,5-4,0.1. A method of rolling pigs of large and medium diameters from ingots and billets of titanium-based alloys in tube rolling plants with pilgrim mills, including casting ingots in vacuum arc furnaces with their subsequent forging into billets, drilling a central hole with a diameter of 100 ± 5.0 mm heating of ingots and billets in muffles in methodical furnaces to a ductility temperature of 1155–1180 ° С, their piercing into sleeves in oblique rolling mills and rolling of conversion tubes on pilgrim mills, characterized in that rolling the pipes in pi igrimovom mill under steady-state process producing a feed sleeve deformation zone m = 20-40 mm and a hood μ = 2,5-4,0. 2. Способ по п.1, отличающийся тем, что во время затравки величину подачи увеличивают с 10 до 20 мм, при установившемся процессе прокатки подачу плавно увеличивают с 20 до 40 мм, а при температуре гильз-труб менее 850°С, подачу плавно снижают до 25 мм, обкатку пилигримовых головок производят с подачей не более 20 мм.2. The method according to claim 1, characterized in that during seeding, the feed rate is increased from 10 to 20 mm, with a steady rolling process, the feed is smoothly increased from 20 to 40 mm, and at a temperature of sleeve tubes less than 850 ° C, the feed is smooth reduce to 25 mm, the pilgrim heads are run-in with a feed of not more than 20 mm. 3. Способ по п.1, отличающийся тем, что при установившемся процессе прокатки подачу на пилигимовом стане увеличивают, величину которой определяют из выражения3. The method according to claim 1, characterized in that with the steady-state rolling process, the feed at the pilgrim mill is increased, the value of which is determined from the expression m=mуст+(tнач-tкрет)К,m = m mouth + (t beg -t cret ) K, а при температуре гильз-труб 850°С подачу плавно снижают, величину которой определяют из выраженияand at a temperature of sleeve tubes of 850 ° C, the flow is smoothly reduced, the value of which is determined from the expression m1=m-(tкрет-tкон1 m 1 = m- (t cret -t con ) K 1 где mуст=20 - величина подачи при установившемся процессе прокатки, после затравки и полного пути отката подающего аппарата, мм;where m mouth = 20 is the value of the feed during the steady rolling process, after seeding and the full path of rollback of the feeding apparatus, mm; tнач=1155-1180 - температура гильзы в начале прокатки, °С;t beg = 1155-1180 - temperature of the liner at the beginning of rolling, ° C; tкрет=850 - критическая температура гильзы-трубы, при которой плавно снижают величину подачи гильз-труб в очаг деформации, °С;t cret = 850 is the critical temperature of the sleeve-tube, at which the feed rate of the sleeve-tubes into the deformation zone is gradually reduced, ° C; tкон - температура конца прокатки гильз-труб, °С;t con - the temperature of the end of the rolling of sleeve tubes, ° C; К=0,06 - коэффициент, учитывающий увеличение подачи в начале установившегося процесса прокатки, при снижении температуры гильзы-трубы на 1°С, мм/°С;K = 0.06 - coefficient taking into account the increase in feed at the beginning of the steady rolling process, while reducing the temperature of the sleeve tube by 1 ° C, mm / ° C; K1=0,09 - коэффициент, учитывающий снижение подачи в процессе прокатки, при снижении температуры гильзы-трубы на 1°С ниже критической, мм/°С.K 1 = 0.09 - coefficient taking into account the decrease in supply during the rolling process, with a decrease in the temperature of the sleeve tube by 1 ° C below the critical, mm / ° C. 4. Способ по п.1, отличающийся тем, что после затравки гильзы в валки пилигримового стана и до конца прокатки подачу воды на валки пилигримового стана снижают в 2-3 раза.4. The method according to claim 1, characterized in that after seeding the liner into the rolls of the pilgrim mill and until the end of the rolling, the water supply to the rolls of the pilgrim mill is reduced by a factor of 2-3. 5. Способ по п.1, отличающийся тем, что прокатку труб производят на двух дорнах разогретых до 600-650°С путем прокатки 2-3 настроечных углеродистых гильз.5. The method according to claim 1, characterized in that the pipes are rolled on two mandrels heated to 600-650 ° C by rolling 2-3 tuning carbon sleeves. 6. Способ по п.5, отличающийся тем, что после прокатки трубы из сплава на основе титана дорн извлекают и охлаждают на воздухе при перекатывании по наклонной решетке в течение 30-45 с к ванне со смазкой, дорноподъемным механизмом дорн погружают в ванну со смазкой и через 5-10 с извлекают, поворачивают в дорноподьемном механизме на 180±20° и повторно погружают в ванну со смазкой на 5-10 с, охлаждают на воздухе, а затем передают в замок подающего аппарата и производят прокатку следующей трубы.6. The method according to claim 5, characterized in that after rolling the titanium-based alloy pipe, the mandrels are removed and cooled in air when rolling on an inclined grate for 30-45 seconds to a grease bath, the mandrel lifting mechanism is immersed in a grease bath and after 5-10 s, they are removed, turned in a lifting mechanism 180 ± 20 ° and re-immersed in a lubricated bath for 5-10 s, cooled in air, and then transferred to the lock of the feeding apparatus and the next pipe is rolled. 7. Способ по п.1, отличающийся тем, что после прокатки пилой горячей резки отрезают пилигримовую головку, а трубу передают, используя температуру прокатного нагрева, на правильную машину для правки кривизны.7. The method according to claim 1, characterized in that after rolling with a hot cutting saw, the pilgrim head is cut off, and the pipe is transferred, using the temperature of the rolling heating, to the correct machine for straightening the curvature. 8. Способ по п.1, отличающийся тем, что трубы-краты после правильной машины с кривизной более 4,0 мм на длину 3600-4000 мм, нагреваются в камерных печах до температуры 750-800°С и в нагретом состоянии производят правку на штемпельном прессе.8. The method according to claim 1, characterized in that the pipe-craters after a straightening machine with a curvature of more than 4.0 mm for a length of 3600-4000 mm are heated in chamber furnaces to a temperature of 750-800 ° C and in the heated state they make corrections to stamp press. 9. Способ по п.8, отличающийся тем, что правку труб-кратов производят за счет изгиба трубы в противоположную сторону на величину превышающую стрелу прогиба в 1,5-2,0 раза, где большие значения относятся трубам-кратам с большей кривизной.9. The method according to claim 8, characterized in that the straightening of the pipe-crats is carried out by bending the pipe in the opposite direction by an amount exceeding the deflection arrow by 1.5-2.0 times, where the larger values refer to the pipe-crats with greater curvature.
RU2005128198/02A 2005-09-09 2005-09-09 Rolling method of conversion tubes of large and mean diameters from ingots and billets of titanium base alloys in tube rolling aggregates with pilger mills RU2315672C2 (en)

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Cited By (2)

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CN103658183A (en) * 2013-12-08 2014-03-26 西北有色金属研究院 Method for manufacturing high-straightness thin-wall titanium alloy tubes
CN111241635A (en) * 2020-01-08 2020-06-05 太原科技大学 Model and method for calculating bending curvature of thick plate after same-diameter different-speed snake-shaped rolling

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* Cited by examiner, † Cited by third party
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RU2523372C2 (en) * 2012-09-14 2014-07-20 Открытое акционерное общество "Челябинский трубопрокатный завод" Production of large- and medium-diameter rerolling pipes from titanium-based alloy ingots and blanks at pipe rolling unit with pilger mill
CN105127200B (en) * 2015-09-29 2017-07-25 中国钢研科技集团有限公司 The manufacture method of nuclear power plant voltage stabilizer Surge line piping
RU2640694C1 (en) * 2017-03-20 2018-01-11 Комаров Андрей Ильич METHOD OF MANUFACTURE OF COLD DRAWN TRADE PIPES OF 273×10×8700-9500 mm SIZE FROM TITANIUM ALLOYS PT-1M AND PT-7M
RU2638266C1 (en) * 2017-03-20 2017-12-12 Комаров Андрей Ильич METHOD OF COLD DRAWN TRADE PIPES MANUFACTURE OF 219×9×11700-12800 mm SIZE FROM TITANIUM ALLOYS PT-1M AND PT-7M

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103658183A (en) * 2013-12-08 2014-03-26 西北有色金属研究院 Method for manufacturing high-straightness thin-wall titanium alloy tubes
CN103658183B (en) * 2013-12-08 2015-12-02 西北有色金属研究院 A kind of manufacture method of high linearity thin-wall titanium alloy tubing
CN111241635A (en) * 2020-01-08 2020-06-05 太原科技大学 Model and method for calculating bending curvature of thick plate after same-diameter different-speed snake-shaped rolling
CN111241635B (en) * 2020-01-08 2022-05-13 太原科技大学 Model and method for calculating bending curvature of thick plate after same-diameter different-speed snake-shaped rolling

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