RU2013129878A

RU2013129878A - METHOD FOR PRODUCING PIPES OF LARGE AND MEDIUM DIAMETERS FOR STEAM BOILERS, STEAM PIPELINES AND MANIFOLDERS OF INSTALLATIONS WITH HIGH AND SUPERCRITICAL STEAM PARAMETERS FROM STEEL 10X9MFB-SH STEEL

Info

Publication number: RU2013129878A
Application number: RU2013129878/02A
Authority: RU
Inventors: Анатолий Васильевич Сафьянов; Александр Анатольевич Федоров; Владимир Петрович Пашнин; Владимир Яковлевич Осадчий; Евгений Юрьевич Шмаков; Кирилл Николаевич Никитин; Владимир Сергеевич Баричко; Николай Петрович Климов; Константин Эдуардович Бубнов; Валерий Александрович Головинов; Александр Анатольевич Сафьянов; Александр Юрьевич Матюшин; Виктор Николаевич Еремин
Original assignee: Открытое акционерное общество "Челябинский трубопрокатный завод"
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2015-01-10
Also published as: RU2541229C2

Abstract

1. Способ производства труб большого и среднего диаметров для паровых котлов, паропроводов и коллекторов установок с высокими и сверхкритическими параметрами пара из стали марки 10Х9МФБ-Ш, включающий выплавку слитков электрошлаковым переплавом, механическую обработку - обточку слитков в слитки-заготовки размером 430×1750±25, 470×1750±25, 585×1750±50 и 620×1750±25 мм, сверление в слитках-заготовках центрального отверстия диаметром (100±5) мм, нагрев слитков-заготовок до температуры пластичности, прошивку их в стане поперечно-винтовой прокатки в гильзы, прокатку гильз на пилигримовых станах в трубы диаметром 273-550 мм с толщинами стенок от 10 до 75 мм и вытяжками, в зависимости от размеров слитков-заготовок и размеров труб, термическую обработку, правку, ультразвуковой контроль и приемку труб с допуском по диаметру +1,25/-1,0% и толщине стенки +20/-5,0%, отличающийся тем, что товарные трубы размером 273×16-60, 299×16-60 мм производят из слитков-заготовок размером 430×100×1750±25 мм по технологии: нагрев слитков-заготовок ЭШП до температуры пластичности, прошивка слитков-заготовок в стане поперечно-винтовой прокатки в гильзы с подъемом по диаметру 4,5 и 4,7%, прокатка гильз на пилигримовых станах в трубы, термическая обработка, ультразвуковой контроль и приемка труб.2. Способ по п.1, отличающийся тем, что трубы размером 273×10-15 и 299×10-15 мм производят из слитков-заготовок размером 470×100×1750±25 мм по технологии: нагрев слитков-заготовок ЭШП до температуры пластичности, прошивка слитков-заготовок в стане поперечно-винтовой прокатки в гильзы с подъемом по диаметру 6,2-6,4 или 10,4-10,6%, прокатка гильз на пилигримовых станах в передельные трубы с допусками по диаметру ±1,25 и толщи�1. Method for the production of pipes of large and medium diameters for steam boilers, steam pipelines and collectors of installations with high and supercritical steam parameters from steel grade 10X9MFB-Sh, including ingots melting by electroslag remelting, machining - turning of ingots into ingots-blanks of 430 × 1750 ± 25, 470 × 1750 ± 25, 585 × 1750 ± 50 and 620 × 1750 ± 25 mm, drilling a central hole with a diameter of (100 ± 5) mm in ingot billets, heating the ingot billets to ductility temperature, piercing them crosswise in the mill screw rolling in sleeves Pilgrim mill shells into pipes with a diameter of 273-550 mm with wall thicknesses from 10 to 75 mm and hoods, depending on the sizes of ingot blanks and pipe sizes, heat treatment, dressing, ultrasonic inspection and pipe acceptance with a diameter tolerance of +1 , 25 / -1.0% and wall thickness + 20 / -5.0%, characterized in that the commodity pipes of 273 × 16-60, 299 × 16-60 mm in size are produced from ingot blanks of 430 × 100 × 1750 ± 25 mm according to the technology: heating the ESR ingots-blanks to the temperature of plasticity, flashing ingots-blanks in a cross-helical mill in gil PS elevation diameter 4.5 and 4.7%, the rolling of sleeves in pilger mills in the pipe, heat treatment, ultrasonic inspection and acceptance trub.2. The method according to claim 1, characterized in that the pipes 273 × 10-15 and 299 × 10-15 mm in size are produced from ingot blanks of 470 × 100 × 1750 ± 25 mm in size according to the technology: heating the ESR ingot blanks to a plasticity temperature, piercing ingot blanks in a cross-helical rolling mill into sleeves with a diameter rise of 6.2-6.4 or 10.4-10.6%, rolling the sleeves on pilgrim mills into conversion tubes with diameter tolerances of ± 1.25 and thickness

Claims

1. Method for the production of pipes of large and medium diameters for steam boilers, steam pipelines and collectors of installations with high and supercritical steam parameters from steel grade 10X9MFB-Sh, including ingots melting by electroslag remelting, machining - turning of ingots into ingots-blanks of 430 × 1750 ± 25, 470 × 1750 ± 25, 585 × 1750 ± 50 and 620 × 1750 ± 25 mm, drilling a central hole with a diameter of (100 ± 5) mm in ingot billets, heating the ingot billets to ductility temperature, piercing them crosswise in the mill screw rolling in sleeves Pilgrim mill shells into pipes with a diameter of 273-550 mm with wall thicknesses from 10 to 75 mm and hoods, depending on the sizes of ingot blanks and pipe sizes, heat treatment, dressing, ultrasonic inspection and pipe acceptance with a diameter tolerance of +1 , 25 / -1.0% and wall thickness + 20 / -5.0%, characterized in that the commodity pipes of 273 × 16-60, 299 × 16-60 mm in size are produced from ingot blanks of 430 × 100 × 1750 ± 25 mm according to the technology: heating the ESR ingots-blanks to the temperature of plasticity, flashing ingots-blanks in a cross-helical mill in gil PS elevation diameter 4.5 and 4.7%, the rolling of sleeves in pilger mills in the pipe, heat treatment, ultrasonic inspection and acceptance pipes.

2. The method according to claim 1, characterized in that the pipes 273 × 10-15 and 299 × 10-15 mm in size are produced from ingot blanks of 470 × 100 × 1750 ± 25 mm in size according to the technology: heating the ESR ingot blanks to a temperature ductility, piercing ingot blanks in a cross-helical rolling mill into sleeves with a rise in diameter of 6.2-6.4 or 10.4-10.6%, rolling the sleeves on pilgrim mills into conversion tubes with tolerances of ± 1 in diameter, 25 and a wall thickness of ± 12.5%, taking into account one or two rolls at the HPT 450 mill, heat treatment of conversion pipes, rolling of conversion pipes into marketable and CPT mills, ultrasonic inspection and pipe acceptance.

3. The method according to claim 1, characterized in that the pipes of size 325 × 16-60 mm are produced from ingot blanks of size 470 × 100 × 1750 ± 25 mm according to the technology: heating ingot blanks ESR to the temperature of plasticity, flashing ingot blanks in a cross-helical rolling mill into sleeves with a diameter rise of 6.2-6.4%, rolling sleeves on pilgrim mills into pipes, heat treatment, ultrasonic inspection and pipe acceptance.

4. The method according to claim 1, characterized in that the pipes of size 325 × 13-15 mm are produced from ingot blanks of size 470 × 100 × 1750 ± 25 mm according to the technology: heating the ingot blanks ESR to the temperature of plasticity, flashing ingot blanks in a mill of cross-helical rolling into sleeves with a diameter rise of 10.4-10.6%, rolling of sleeves on pilgrim mills into conversion tubes with tolerances of diameter ± 1.25 and wall thickness ± 12.5%, taking into account one roll HPT 450 mill, heat treatment of conversion pipes, rolling of conversion pipes into commodity pipes at the HPT mill, ultrasound th control and acceptance of pipes.

5. The method according to claim 1, characterized in that the pipes 377 × 20-75 mm in size are produced from ingot blanks of 470 × 100 × 1750 ± 25 mm in size according to the technology: heating the ESR ingot blanks to a plasticity temperature, flashing ingot blanks in a mill of cross-helical rolling into sleeves with a diameter rise of 10.4-10.8%, rolling sleeves on pilgrim mills into pipes, heat treatment of pipes, ultrasonic inspection and pipe acceptance.

6. The method according to claim 1, characterized in that the pipes of size 377 × 14-19 mm are produced from ingot blanks of size 620 × 100 × 1750 ± 25 mm according to the technology: heating the ingot blanks of ESR to the ductility temperature, flashing ingot blanks in a mill of cross-helical rolling into sleeve blanks, size in diameter, heating of sleeve blanks from a cold or hot seat to plasticity temperature, flashing-rolling of sleeve blanks into sleeves with a diameter rise of 3.2-3.4%, rolling of sleeves on pilgrim mills into conversion pipes with diametric tolerances of ± 1.25 wall thickness ± 12,5% based on the two sills HPT mill 450, heat treatment of mother tubes, rolling of mother tubes on a commodity HPT mill, ultrasonic inspection and acceptance pipes.

7. The method according to claim 1, characterized in that the pipes with a size of 426 × 21-75 mm are produced from ingot blanks of a size of 585 × 100 × 1750 ± 25 mm according to the technology: heating the ingot blanks of an ESR to a plasticity temperature, flashing ingot blanks in a cross-helical rolling mill into sleeves on mandrels with a diameter of 300 to 400 mm, depending on the wall thickness of the commodity pipes, with a diameter rise of 2.4-2.6%, rolling the sleeves on pilgrim mills into pipes, heat treatment, ultrasonic pipe inspection and acceptance.

8. The method according to claim 1, characterized in that the pipes with a size of 426 × 14-20 mm are produced from ingot blanks of a size of 620 × 100 × 1750 ± 50 mm according to the technology: heating the ingot blanks of an ESR to a plasticity temperature, flashing ingot blanks in a mill of cross-helical rolling into sleeve blanks, size in diameter, heating of sleeve blanks from a cold or hot seat to plasticity temperature, flashing-rolling of sleeve blanks into sleeves with a diameter rise of 3.2-3.4%, rolling of sleeves on pilgrim mills into conversion pipes with wall thicknesses taking into account -stand rolling mill for HPT 450 with a tolerance of ± 1,25 diameter and wall thickness ± 12,5%, thermal treatment of metal recycling pipe rolling mill for metal recycling pipe 450 HPT commodity tube ultrasonic testing and acceptance pipes.

9. The method according to claim 1, characterized in that the pipes with a size of 465 × 26-75 mm are produced from ingot blanks of a size of 620 × 100 × 1750 ± 25 mm according to the technology: heating the ingot blanks of an ESR to a plasticity temperature, flashing ingot blanks in a cross-helical rolling mill into conversion sleeve blanks, size in diameter, heating of sleeve blanks from a cold or hot seat to ductility temperature, flashing-rolling of sleeve blanks into sleeves with a diameter rise of 3.2-3.4% , tube rolling on pilgrim mills into pipes, heat treatment, ultra sound control and pipe acceptance.

10. The method according to claim 1, characterized in that the pipes with a size of 465 × 16-25 mm are produced from ingot blanks of a size of 620 × 100 × 1750 ± 25 mm by technology: heating the ingot blanks of an ESR to a plasticity temperature, flashing ingot blanks in a mill of cross-helical rolling into sleeve blanks, size in diameter, heating of sleeve blanks from a cold or hot seat to ductility temperature, flashing-rolling of sleeve blanks into sleeves with a diameter rise of 4.6-4.8%, rolling sleeves on pilgrim mills into pipes with allowance for diameter and wall thickness for machining, boring and turning, heat treatment, machining - boring and turning for dimensions in accordance with the order, ultrasonic inspection and pipe acceptance.

11. The method according to claim 1, characterized in that the pipes 530 × 31-75 mm in size are produced from ingot blanks of 620 × 100 × 1750 ± 25 mm in size according to the technology: heating the ESR ingot blanks to a plasticity temperature, flashing ingot blanks in a mill of cross-helical rolling into sleeves-blanks with a rise in diameter of 3.2-3.4%, heating the sleeves-blanks from a cold or hot seat to a temperature of plasticity, flashing-rolling of sleeves-blanks into sleeves with a rise in diameter of 4, 5-4.7%, tube rolling on pilgrim mills into pipes, heat treatment, ultrasonic control and On acceptance of the pipes.

12. The method according to claim 1, characterized in that the pipes of size 530 × 25-30 mm are produced from ingot blanks of size 620 × 100 × 1750 ± 25 mm according to the technology: heating the ingot blanks of ESR to a plasticity temperature, flashing ingot blanks in a mill of cross-helical rolling into sleeves-blanks with a rise in diameter of 3.2-3.4%, heating the sleeves-blanks from a cold or hot seat to a temperature of plasticity, flashing-rolling of sleeves-blanks into sleeves with a rise in diameter of 4, 6-4.8%, rolling sleeves on pilgrim mills into pipes with allowance for diameter and wall thickness for machining - boring and turning, heat treatment, machining - boring and turning of converted pipes into commodity ones, the size in accordance with the order, ultrasonic inspection and acceptance of pipes.

13. The method according to claim 1, characterized in that the pipes of size 550 × 31-75 mm are produced from ingot blanks of size 620 × 100 × 1750 ± 25 mm according to the technology: heating the ingot blanks to a plasticity temperature, flashing ingot blanks into a cross-helical rolling mill into blanks with a diameter of 3.0-3.5% rise, heating of blanks from cold or hot welds to a ductile temperature, firmware-rolling of blanks into blanks with a diameter rise of 4.5 -5.0%, tube rolling on pilgrim mills into pipes, heat treatment, ultrasonic contact the role and acceptance of pipes in accordance with TU14-3R-55-2001

14. The method according to claim 1, characterized in that the pipes of size 550 × 25-30 mm are produced from ingot blanks of size 620 × 100 × 1750 ± 25 mm by technology: heating the ingot blanks to a plasticity temperature, flashing the ingot blanks into a cross-helical rolling mill into sleeves with a diameter of 3.0-3.5% rise, heating the sleeves from a cold or hot seat to a ductile temperature, firmware - rolling the sleeves into blanks with a rise in diameter of 4.5 -5.0%, rolling sleeves on pilgrim mills into pig tubes, heat treatment, mechanical machining - boring and turning of conversion pipes into commercial ones with a size of 550 × 25-30 mm, ultrasonic inspection and acceptance of pipes in accordance with TU14-3R-55-2001.