RU2000130558A - METHOD FOR PRODUCING SEAMLESS HOT-ROLLED PIPES OF A LARGE DIAMETER FROM STEELS WITH AN INCREASED LINEAR EXPANSION FACTOR - Google Patents
METHOD FOR PRODUCING SEAMLESS HOT-ROLLED PIPES OF A LARGE DIAMETER FROM STEELS WITH AN INCREASED LINEAR EXPANSION FACTORInfo
- Publication number
- RU2000130558A RU2000130558A RU2000130558/02A RU2000130558A RU2000130558A RU 2000130558 A RU2000130558 A RU 2000130558A RU 2000130558/02 A RU2000130558/02 A RU 2000130558/02A RU 2000130558 A RU2000130558 A RU 2000130558A RU 2000130558 A RU2000130558 A RU 2000130558A
- Authority
- RU
- Russia
- Prior art keywords
- linear expansion
- steels
- large diameter
- seamless hot
- expansion factor
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims 2
- 238000004519 manufacturing process Methods 0.000 title claims 2
- 239000010959 steel Substances 0.000 title claims 2
- 238000005096 rolling process Methods 0.000 claims 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000005498 polishing Methods 0.000 claims 1
Claims (1)
Δ = 4Днα(1+αt)(t-t1),
где Дн - номинальный диаметр прокатываемых труб, мм;
α - коэффициент линейного расширения;
t - температура гильзы в начале прокатки, oС;
t1 - температура конца трубы в момент схода с дорна, oС.A method for the production of seamless hot-rolled large diameter pipes from steels with an increased coefficient of linear expansion, including heating the workpiece (ESR ingot), piercing and rolling on a pilgrim mill in rolls with a round caliber in the polishing section, characterized in that the rolling is carried out in rolls with a caliber equal to Dc = Дн (1 + αt) [1 + 4α (t-t1)] with decreasing distance between roll flanges after seed by
Δ = 4Dnα (1 + αt) (t-t1),
where Dn is the nominal diameter of rolled pipes, mm;
α is the coefficient of linear expansion;
t is the temperature of the liner at the beginning of rolling, o C;
t1 - temperature of the end of the pipe at the moment of descent from the mandrel, o C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000130558A RU2219006C2 (en) | 2000-12-06 | 2000-12-06 | Method of production of seamless pipes of large diameter out of steels with increased coefficient of linear expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000130558A RU2219006C2 (en) | 2000-12-06 | 2000-12-06 | Method of production of seamless pipes of large diameter out of steels with increased coefficient of linear expansion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2000130558A true RU2000130558A (en) | 2003-02-27 |
| RU2219006C2 RU2219006C2 (en) | 2003-12-20 |
Family
ID=32065223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2000130558A RU2219006C2 (en) | 2000-12-06 | 2000-12-06 | Method of production of seamless pipes of large diameter out of steels with increased coefficient of linear expansion |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2219006C2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2301713C2 (en) * | 2005-07-04 | 2007-06-27 | ОАО "Челябинский трубопрокатный завод" | Method for producing casing tubes for threading in tube rolling aggregates with pilger mills |
| RU2312153C2 (en) * | 2005-09-09 | 2007-12-10 | ОАО "Челябинский трубопрокатный завод" | Method of heating ingots and blanks made from titanium-based alloy for piercing in skew rolling mills |
| RU2322313C2 (en) * | 2006-06-05 | 2008-04-20 | Закрытое акционерное общество "Волгоградский металлургический завод "Красный Октябрь" ЗАО "ВМЗ "Красный Октябрь" | Method for rolling round shapes of large diameters in segment type roll grooved passes |
| RU2508955C1 (en) * | 2012-12-10 | 2014-03-10 | Открытое акционерное общество "Челябинский трубопрокатный завод" | METHOD OF MAKING WELL CASING SIZED TO 244,5×7,9, 244,5×9 AND 244,5×10 mm AT PIPE ROLLING UNIT WITH PILGER MILLS |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1199318A1 (en) * | 1983-07-13 | 1985-12-23 | Vni Kt I Trubnoj Promy | Billet for helical expanding |
| FR2550108B1 (en) * | 1983-08-01 | 1986-06-27 | Vallourec | PROCESS FOR COLD ROLLING OF TUBES USING A PILGRIM STEEL ROLLING MACHINE AND ROLLING MACHINE FOR IMPLEMENTING SAME |
| US4798071A (en) * | 1986-06-25 | 1989-01-17 | Kocks Technik Gmbh & Co. | Seamless tube production |
| RU2009739C1 (en) * | 1991-06-26 | 1994-03-30 | Акционерное общество "Челябинский трубопрокатный завод" | Method of cross-screw piercing |
| RU2113296C1 (en) * | 1997-03-04 | 1998-06-20 | Акционерное общество открытого типа "Челябинский трубопрокатный завод" | Method of broaching of bimetal large-diameter ingots obtained by vacuum-arc and electroslag refining |
-
2000
- 2000-12-06 RU RU2000130558A patent/RU2219006C2/en not_active IP Right Cessation
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