SU416122A1 - - Google Patents
Info
- Publication number
- SU416122A1 SU416122A1 SU1640051A SU1640051A SU416122A1 SU 416122 A1 SU416122 A1 SU 416122A1 SU 1640051 A SU1640051 A SU 1640051A SU 1640051 A SU1640051 A SU 1640051A SU 416122 A1 SU416122 A1 SU 416122A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mandrel
- hot rolling
- pipe
- movable
- eliminate
- Prior art date
Links
Landscapes
- Control Of Metal Rolling (AREA)
Description
1one
Известен способ изготовлени труб, включающий гор чую прокатку и волочение на подвижной оправке.A known method of manufacturing pipes includes hot rolling and drawing on a movable mandrel.
Однако у известного способа увеличена абсолютна разностенность трубы.However, in the known method, the absolute differential wall thickness is increased.
Описываемый способ отличаетс тем, что трубу перед деформацией на подвижной оправке подвергают раздаче той же оправкой. Это позвол ет устранить продольную разнотолщинность , полученную при гор чей прокатке .The described method is characterized in that the pipe is dispensed with the same mandrel before being deformed on the movable mandrel. This makes it possible to eliminate the longitudinal thickness variation obtained during hot rolling.
Существо способа заключаетс в следующем . Вначале нагревают трубу до 900-1100°С и калибруют внутренний ее диаметр за счет прокаливани через трубу длинной оправки,The essence of the method is as follows. First, the tube is heated to 900-1100 ° C and its inner diameter is calibrated by calcining a long mandrel through the tube,
имеющей диаметр, равный номинальному внутреннему диаметру трубы без учета разностенности , а затем производ т волочение трубы по наружному диаметру на той же оправке до получени нужного размера.having a diameter equal to the nominal inner diameter of the pipe without taking into account the difference in thickness, and then drawing the pipe along the outer diameter on the same mandrel until the desired size is obtained.
Предмет изобретени Subject invention
Способ изготовлени труб, включающий гор чую прокатку и волочение на подвижной оправке, отличающийс тем, что, с целью устранени продольной разностенности, полученной при гор чей прокатке, трубу перед деформацией на подвижной оправке подвергают раздаче по всей длине той же оправкой.A method of manufacturing pipes, including hot rolling and drawing on a movable mandrel, characterized in that, in order to eliminate the longitudinal fractions obtained during hot rolling, the pipe is subjected to distribution along the entire length of the same mandrel before deformation on the movable mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1640051A SU416122A1 (en) | 1971-03-29 | 1971-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1640051A SU416122A1 (en) | 1971-03-29 | 1971-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU416122A1 true SU416122A1 (en) | 1974-02-25 |
Family
ID=20470526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1640051A SU416122A1 (en) | 1971-03-29 | 1971-03-29 |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU416122A1 (en) |
-
1971
- 1971-03-29 SU SU1640051A patent/SU416122A1/ru active
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