JPS5781909A - Rolling method for pipe material - Google Patents
Rolling method for pipe materialInfo
- Publication number
- JPS5781909A JPS5781909A JP15932480A JP15932480A JPS5781909A JP S5781909 A JPS5781909 A JP S5781909A JP 15932480 A JP15932480 A JP 15932480A JP 15932480 A JP15932480 A JP 15932480A JP S5781909 A JPS5781909 A JP S5781909A
- Authority
- JP
- Japan
- Prior art keywords
- clearance
- pipe
- rolls
- pipe material
- spirally
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
PURPOSE: To manufacture a seamless large diameter pipe with small driving power by subjecting a pipe material spirally to a process of bending part of said pipe material in its circumferential and axial directions to outer wide, and gradually expanding the same then bending the same to a straight pipe part.
CONSTITUTION: An inner roll 12 is restrained at an angle θ by a pair of guide rollers 41 disposed on both sides of the roll 12, and a pipe material 10 is passed through a clearance 36 at the angle θ with respect to the inner and outer rolls 12, 14 from the left direction. Then, it is driven by the rolls 12, 14 and moves in the direction of the clearance 38 while revolving. The unworked part 10A of the material 10 arriving at the clearance 40 is rolled by the tapered parts 16, 26 of the rolls 12, 14, by which the wall thickness is reduced and the material is bent to the outer side. Thereafter, it is bent to the inner side in the clearance 38 to form a straight pipe part 10C. The above-mentioned process is applied successively and spirally to the material 10, whereby the flow of the material in the circumferential direction is made easy and the need for large driving force is eliminated.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15932480A JPS5781909A (en) | 1980-11-12 | 1980-11-12 | Rolling method for pipe material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15932480A JPS5781909A (en) | 1980-11-12 | 1980-11-12 | Rolling method for pipe material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5781909A true JPS5781909A (en) | 1982-05-22 |
Family
ID=15691313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15932480A Pending JPS5781909A (en) | 1980-11-12 | 1980-11-12 | Rolling method for pipe material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5781909A (en) |
-
1980
- 1980-11-12 JP JP15932480A patent/JPS5781909A/en active Pending
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