RU2007148357A -
METHOD FOR PRODUCING SEAMLESS HOT-ROLLED PIPES OF A LARGE DIAMETER AT A TUBE-ROLLING PLANT WITH PILGRIM MILLS
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METHOD FOR PRODUCING SEAMLESS HOT-ROLLED PIPES OF A LARGE DIAMETER AT A TUBE-ROLLING PLANT WITH PILGRIM MILLS
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RU2007148357A
RU2007148357ARU2007148357/02ARU2007148357ARU2007148357ARU 2007148357 ARU2007148357 ARU 2007148357ARU 2007148357/02 ARU2007148357/02 ARU 2007148357/02ARU 2007148357 ARU2007148357 ARU 2007148357ARU 2007148357 ARU2007148357 ARU 2007148357A
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1. Способ производства бесшовных горячекатаных труб большого диаметра на трубопрокатных установках с пилигримовыми станами, включающий нагрев слитков и заготовок до температуры пластичности, прошивку их в стане поперечно-винтовой прокатки в гильзы, нагрев гильзы, последующую раскатку ее на стане поперечно-винтовой прокатки и прокатку на пилигримовом стане, отличающийся тем, что трубы диаметром более 500 мм с отношением диаметра к толщине стенки 48-60 производят на ТПУ 8-16'' с пилигримовыми станами по технологии - прошивка слитков и заготовок в гильзы с отношением диаметра к толщине стенки 4,5-5,5 и подъемом по диаметру 3,0-5,0%, нагрев гильз до температуры пластичности с холодного или горячего посада, раскатка гильз в прошивном стане с вытяжкой не более 1,7, подъемом по диаметру 6,0-6,5%, прокатка гильз на пилигримовом стане в товарные трубы на дорнах, разогретых до температуры 500-650°С. ! 2. Способ по п.1, отличающийся тем, что прокатку труб на пилигримовом стане производят с величиной подачи гильзы в очаг деформации m=12-14 мм.1. Method for the production of large-diameter seamless hot-rolled pipes in tube-rolling plants with pilgrim mills, including heating ingots and billets to a ductile temperature, flashing them in a cross-helical mill into sleeves, heating the sleeves, then rolling it out on a cross-helical mill and rolling on a pilgrim mill, characterized in that pipes with a diameter of more than 500 mm with a ratio of diameter to wall thickness of 48-60 are produced at TPU 8-16 '' with pilgrim mills according to the technology - ingots and billets are flashed in sleeves with a ratio of diameter to wall thickness of 4.5-5.5 and a rise in diameter of 3.0-5.0%, heating the sleeves to the ductility temperature from a cold or hot seat, rolling the sleeves in a piercing mill with an exhaust hood of no more than 1, 7, an increase in diameter of 6.0-6.5%, the rolling of sleeves on a pilgrim mill in commodity pipes on mandrels, heated to a temperature of 500-650 ° C. ! 2. The method according to claim 1, characterized in that the pipes are rolled on a pilgrim mill with a feed rate of the sleeve into the deformation zone m = 12-14 mm.
Claims (2)
1. Способ производства бесшовных горячекатаных труб большого диаметра на трубопрокатных установках с пилигримовыми станами, включающий нагрев слитков и заготовок до температуры пластичности, прошивку их в стане поперечно-винтовой прокатки в гильзы, нагрев гильзы, последующую раскатку ее на стане поперечно-винтовой прокатки и прокатку на пилигримовом стане, отличающийся тем, что трубы диаметром более 500 мм с отношением диаметра к толщине стенки 48-60 производят на ТПУ 8-16'' с пилигримовыми станами по технологии - прошивка слитков и заготовок в гильзы с отношением диаметра к толщине стенки 4,5-5,5 и подъемом по диаметру 3,0-5,0%, нагрев гильз до температуры пластичности с холодного или горячего посада, раскатка гильз в прошивном стане с вытяжкой не более 1,7, подъемом по диаметру 6,0-6,5%, прокатка гильз на пилигримовом стане в товарные трубы на дорнах, разогретых до температуры 500-650°С.1. Method for the production of large-diameter seamless hot-rolled pipes in tube-rolling plants with pilgrim mills, including heating ingots and billets to a ductile temperature, flashing them in a cross-helical mill into sleeves, heating the sleeves, then rolling it out on a cross-helical mill and rolling on a pilgrim mill, characterized in that pipes with a diameter of more than 500 mm with a ratio of diameter to wall thickness of 48-60 are produced at TPU 8-16 '' with pilgrim mills according to the technology - ingots and billets are flashed in sleeves with a ratio of diameter to wall thickness of 4.5-5.5 and a rise in diameter of 3.0-5.0%, heating the sleeves to the ductility temperature from a cold or hot seat, rolling the sleeves in a piercing mill with an exhaust hood of no more than 1, 7, an increase in diameter of 6.0-6.5%, the rolling of sleeves on a pilgrim mill in commodity pipes on mandrels, heated to a temperature of 500-650 ° C.2. Способ по п.1, отличающийся тем, что прокатку труб на пилигримовом стане производят с величиной подачи гильзы в очаг деформации m=12-14 мм.
2. The method according to claim 1, characterized in that the pipes are rolled on a pilgrim mill with a feed rate of the sleeve into the deformation zone m = 12-14 mm.
RU2007148357/02A2007-12-242007-12-24Fabrication method of seamless hot-rolled tubes of large diametre on tube-forming installation with pilger mills
RU2387500C2
(en)
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