JPS5728604A - Caliber roll - Google Patents
Caliber rollInfo
- Publication number
- JPS5728604A JPS5728604A JP10260980A JP10260980A JPS5728604A JP S5728604 A JPS5728604 A JP S5728604A JP 10260980 A JP10260980 A JP 10260980A JP 10260980 A JP10260980 A JP 10260980A JP S5728604 A JPS5728604 A JP S5728604A
- Authority
- JP
- Japan
- Prior art keywords
- stand
- points
- designated
- pipe
- wall thickness
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
PURPOSE:To roll a pipe so as to provide it with uniform wall thickness over all circumference, and to prevent the generation of a squarish inner face of the pipe, by making the drawing rate for the pipe's outer diameter at the middle point between the groove bottom and the flange part of a caliber smaller than the average value of the drawing rate at the groove bottom and that at the flange part. CONSTITUTION:In respect of calibers 1c-4c of caliber rolls 1-4 of a stand (i-1) and a stand (i), the groove bottoms are designated by G1-G4; and the middle points between inside edges of flange parts 1f-4f are designated by F1-F4. The points of contact on the caliber surface, made by tangents inclining at an angle of 45 deg. against a line connecting G1 to G2 or G3 to G4, are designated by M1-M4. The relation of outer diametral drawing rates xsig, xsif, xsim respectively between the points G3, G<4> and F3, F4 and M3, M4 of the roll of >=1 stands, the stand (i) for exmple, with the exception of the stand (i-1), is set by the equations I, II so as to make the wall thickness variation at the points M1, M2 between before and after the rolling process euqal to the circumferential variation of the average wall thickness similarly between before and after the rolling process.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10260980A JPS5728604A (en) | 1980-07-25 | 1980-07-25 | Caliber roll |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10260980A JPS5728604A (en) | 1980-07-25 | 1980-07-25 | Caliber roll |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5728604A true JPS5728604A (en) | 1982-02-16 |
JPS6312683B2 JPS6312683B2 (en) | 1988-03-22 |
Family
ID=14331975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10260980A Granted JPS5728604A (en) | 1980-07-25 | 1980-07-25 | Caliber roll |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5728604A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61216805A (en) * | 1985-03-22 | 1986-09-26 | Nippon Kokan Kk <Nkk> | Multi-stand continuous drawing and rolling method for metallic pipe |
EP1731234A1 (en) * | 2004-03-29 | 2006-12-13 | Sumitomo Metal Industries, Ltd. | Tube manufacturing method and apparatus for fixed diameter rolling |
-
1980
- 1980-07-25 JP JP10260980A patent/JPS5728604A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61216805A (en) * | 1985-03-22 | 1986-09-26 | Nippon Kokan Kk <Nkk> | Multi-stand continuous drawing and rolling method for metallic pipe |
JPH0378161B2 (en) * | 1985-03-22 | 1991-12-12 | Nippon Kokan Kk | |
EP1731234A1 (en) * | 2004-03-29 | 2006-12-13 | Sumitomo Metal Industries, Ltd. | Tube manufacturing method and apparatus for fixed diameter rolling |
EP1731234A4 (en) * | 2004-03-29 | 2007-10-24 | Sumitomo Metal Ind | Tube manufacturing method and apparatus for fixed diameter rolling |
Also Published As
Publication number | Publication date |
---|---|
JPS6312683B2 (en) | 1988-03-22 |
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