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RU2002105288A - Method for the production of redistribution pipes from hardly deformable grades of steel and alloys with an increased coefficient of linear expansion - Google Patents

Method for the production of redistribution pipes from hardly deformable grades of steel and alloys with an increased coefficient of linear expansion

Info

Publication number
RU2002105288A
RU2002105288A RU2002105288/02A RU2002105288A RU2002105288A RU 2002105288 A RU2002105288 A RU 2002105288A RU 2002105288/02 A RU2002105288/02 A RU 2002105288/02A RU 2002105288 A RU2002105288 A RU 2002105288A RU 2002105288 A RU2002105288 A RU 2002105288A
Authority
RU
Russia
Prior art keywords
pipe
mandrel
alloys
feeding apparatus
steel
Prior art date
Application number
RU2002105288/02A
Other languages
Russian (ru)
Other versions
RU2220794C2 (en
Inventor
Александр Анатольевич Фёдоров
Анатолий Васильевич Сафьянов
Валерий Валерьевич Игнатьев
Леонид Игнатьевич Лапин
Игорь Александрович Романцов
Сергей Васильевич Ненахов
Николай Петрович Климов
Валерий Андреевич Логовиков
Original Assignee
ОАО "Челябинский трубопрокатный завод"
Filing date
Publication date
Application filed by ОАО "Челябинский трубопрокатный завод" filed Critical ОАО "Челябинский трубопрокатный завод"
Priority to RU2002105288/02A priority Critical patent/RU2220794C2/en
Priority claimed from RU2002105288/02A external-priority patent/RU2220794C2/en
Publication of RU2002105288A publication Critical patent/RU2002105288A/en
Application granted granted Critical
Publication of RU2220794C2 publication Critical patent/RU2220794C2/en

Links

Claims (2)

1. Способ производства передельных труб из труднодеформируемых марок стали и сплавов с повышенным коэффициентом линейного расширения, включающий прокатку труб из нагретых до температуры пластичности гильз или полых заготовок в пилигримовом стане на дорнах за счет периодической порционной подачи их в очаг деформации, откат гильзы-трубы валками за счет сил трния и извлечение дорна из трубы в конце прокатки подающим аппаратом, отличающийся тем, что передний конец застрявшего дорна с трубой выводят за линию центров валков на расстояние, равное 1,1-1,3 длины пути отката подающего аппарата, опускают верхний валок и производят прокатку (обжатие) застрявшей трубы на дорне на повышенных подачах с обжатием по диаметру 0,8-1,2% и извлекают дорн из трубы подающим аппаратом при откате дорна с трубой валками.1. A method for the production of redistributed tubes from hard-deformed grades of steel and alloys with an increased coefficient of linear expansion, which includes rolling tubes from thermowells or hollow billets in a pilgrim mill on mandrels due to their periodic portioned feeding into the deformation zone, roll-off of the liner-tube by rolls due to the forces of friction and the removal of the mandrel from the pipe at the end of rolling by the feeding apparatus, characterized in that the front end of the stuck mandrel with the pipe is taken out of the line of roll centers at a distance of 1.1-1.3 lengths of the path of rollback of the feeding apparatus, lower the upper roll and rolling (crimping) the stuck pipe on the mandrel at high feeds with a compression of 0.8-1.2% in diameter and removing the mandrel from the pipe by the feeding apparatus at Roll back the mandrel with pipe rolls. 2. Способ по п.1, отличающийся тем, что за одну подачу и откат дорн извлекают из трубы усилием подающего аппарата на длину, увеличивающуюся от начала к концу обкатки, от 0,2 до 0,8 величины подачи.2. The method according to claim 1, characterized in that for one feed and rollback the mandrels are removed from the pipe by the force of the feeding apparatus for a length increasing from 0.2 to 0.8 of the feed value from the beginning to the end of the run-in.
RU2002105288/02A 2002-02-26 2002-02-26 Method for making conversion tubes of hard-to-form kinds of steels and alloys with increased linear expansion factor RU2220794C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2002105288/02A RU2220794C2 (en) 2002-02-26 2002-02-26 Method for making conversion tubes of hard-to-form kinds of steels and alloys with increased linear expansion factor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2002105288/02A RU2220794C2 (en) 2002-02-26 2002-02-26 Method for making conversion tubes of hard-to-form kinds of steels and alloys with increased linear expansion factor

Publications (2)

Publication Number Publication Date
RU2002105288A true RU2002105288A (en) 2003-09-27
RU2220794C2 RU2220794C2 (en) 2004-01-10

Family

ID=32090762

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2002105288/02A RU2220794C2 (en) 2002-02-26 2002-02-26 Method for making conversion tubes of hard-to-form kinds of steels and alloys with increased linear expansion factor

Country Status (1)

Country Link
RU (1) RU2220794C2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2276625C2 (en) * 2004-07-14 2006-05-20 ОАО "Челябинский трубопрокатный завод" Method for producing hot rolled seamless tubes from forged or continuously cast billets, electroslag refining ingots in tube rolling aggregates with pilger mills
RU2346765C2 (en) * 2006-03-29 2009-02-20 ОАО "Челябинский трубопрокатный завод" Method for production of bar-ingots by electroslag remelt from alloyed and low-alloyed steel grades, rolling of commercial and conversion pipes of large and medium diameters on tube-rolling plants with pilger rolling mill
RU2346764C2 (en) * 2006-09-07 2009-02-20 ОАО "Челябинский трубопрокатный завод" Method for production of long-length rerolling pipes of large and medium diameters from hollow bar-ingots of electroslags produced by remelt of steel of grades 08x10h20t2 and 08x10h16t2 for retractable systems
RU2334572C2 (en) * 2006-11-07 2008-09-27 ОАО "Челябинский трубопрокатный завод" Method of large-diameter pipe rolling of difficult-to-form steel brands at pilger mill
RU2387499C2 (en) * 2007-07-18 2010-04-27 ОАО "Челябинский трубопрокатный завод" Fabrication method of long hollow ship's shafts of large and mean diametres from low-magnetic corrosion-resistant steels
RU2386499C2 (en) * 2007-08-01 2010-04-20 ОАО "Челябинский трубопрокатный завод" Method for production of ship lengthy hollow shafts of large and medium diametre from low-magnetic corrosion-resistant steels
RU2387494C2 (en) * 2007-12-13 2010-04-27 ОАО "Челябинский трубопрокатный завод" Fabrication method of long hollow ship's shafts of large and mean diametres from low-magnetic corrosion-resistant steels
RU2401169C2 (en) * 2008-04-18 2010-10-10 ОАО "Челябинский трубопрокатный завод" Method of producing high-quality pipes from antirust steel 08x18h10t-"+" for nuclear power engineering structures

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025840C3 (en) * 1990-08-16 1999-06-24 Wirsbo Pex Gmbh Process for the production of pipeline connections from polyolefin

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