RU93038225A - Method of longitudinal pipe rolling - Google Patents
Method of longitudinal pipe rollingInfo
- Publication number
- RU93038225A RU93038225A RU93038225/02A RU93038225A RU93038225A RU 93038225 A RU93038225 A RU 93038225A RU 93038225/02 A RU93038225/02 A RU 93038225/02A RU 93038225 A RU93038225 A RU 93038225A RU 93038225 A RU93038225 A RU 93038225A
- Authority
- RU
- Russia
- Prior art keywords
- caliber
- round
- wall
- tubular
- perimeter
- Prior art date
Links
- 238000005096 rolling process Methods 0.000 title claims 3
- 238000007906 compression Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 1
Claims (1)
- Δhв,
где Δt - величина разностенности по периметру трубчатой заготовки на участках, расположенных между ребордой и гребнем ручья калибров, Δtр, Δhв - величина обжатия стенки трубчатой заготовки в круглом без выпусков калибре соответственно изнутри оправкой по разъему калибра и по наружному диаметру валками по гребню калибра, Dк - диаметр круглого без выпусков калибра, tт р - толщина стенки трубы, tз р - толщина стенки заготовки по разъему калибра, и участки с минимальной толщиной стенки ориентируют к гребню ручья круглого без выпусков калибра, причем деформацию в круглом калибре осуществляют с одновременным обжатием стенки по всему периметру трубчатой заготовки.The invention relates to pipe production and can be used in the manufacture of pipes by the method of cold or hot deformation. The task is to create a uniform stress-strain state of the metal during the longitudinal rolling of pipes in a round caliber without releases. This task is achieved by the fact that in the known method of longitudinal rolling of pipes, in which a tubular billet is deformed on a mandrel by means of strand rollers with uneven compression of the wall around its perimeter in oval and round calibers, uneven compression of the wall of the tubular billet is carried out by a value determined by the ratio
- Δh in ,
where Δt - value variation in the perimeter of the tubular blank in the areas located between flange and groove stream calibers, Δt p, Δh in - magnitude reduction of the tubular wall of the preform in a round without issues caliber respectively inside the mandrel by connector caliber and the outer diameter of the rolls along the ridge caliber , D c is the diameter of a round caliber without outlet, t t p is the pipe wall thickness, t s p is the wall thickness of the workpiece along the caliber connector, and sections with a minimum wall thickness are oriented to the crest of a round stream without caliber outlets, Ichem deformation in a round caliber is carried out with simultaneous compression of the wall around the perimeter of the tubular billet.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU93038225A true RU93038225A (en) | 1996-05-10 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2492009C1 (en) * | 2012-01-30 | 2013-09-10 | Открытое акционерное общество "Синарский трубный завод" (ОАО "СинТЗ") | Method of preparing high-strength oil pipes with temperature of 500-720°c after heat treatment for thread cutting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2492009C1 (en) * | 2012-01-30 | 2013-09-10 | Открытое акционерное общество "Синарский трубный завод" (ОАО "СинТЗ") | Method of preparing high-strength oil pipes with temperature of 500-720°c after heat treatment for thread cutting |
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