JPS55103210A - Setting method for roll gap in stretching reducer - Google Patents
Setting method for roll gap in stretching reducerInfo
- Publication number
- JPS55103210A JPS55103210A JP1067579A JP1067579A JPS55103210A JP S55103210 A JPS55103210 A JP S55103210A JP 1067579 A JP1067579 A JP 1067579A JP 1067579 A JP1067579 A JP 1067579A JP S55103210 A JPS55103210 A JP S55103210A
- Authority
- JP
- Japan
- Prior art keywords
- roll gap
- value
- operator
- stand
- operates
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/78—Control of tube rolling
-
- 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
- B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
- B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE:To finish the pipe into desired size and shape, and to remove the fluctuation of rolling characteristics, by measuring and processing the outer diameter of the pipe blank at the position corresponding to the bottom of groove of both caliber rolls on the exit side of each stand, and by operating the distance between the bottom of groove and the outer surface of the mandrel on purpose to control the roll gap. CONSTITUTION:The mandrel bar MB is inserted into the pipe blank PP; under this condition, the outer diameter D of this pipe blank PP is measured by the detector 11 when passing each stand, on the exit side of that stand. This information is corrected by the correction operator 13 into the clearance size D' between bottoms of grooves of caliber rolls 1a, 1b, and information on this value D' is inputted to the roll gap operator 14. The roll gap operator 14 operates the roll gap (h) from this valve D' and previously set and memorized value of diameter DM of the mandrel MB according to the forfula h=1/2(D'-DM). The comparison operator 15 operates the difference of this value (h) from the aim value hO, and operates the roll gap variation S required in naking zero this difference. Responding to this operation, the motor 10 actuates so as to set the roll gap to the aim value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1067579A JPS55103210A (en) | 1979-01-31 | 1979-01-31 | Setting method for roll gap in stretching reducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1067579A JPS55103210A (en) | 1979-01-31 | 1979-01-31 | Setting method for roll gap in stretching reducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55103210A true JPS55103210A (en) | 1980-08-07 |
Family
ID=11756826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1067579A Pending JPS55103210A (en) | 1979-01-31 | 1979-01-31 | Setting method for roll gap in stretching reducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55103210A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996022845A1 (en) * | 1995-01-25 | 1996-08-01 | Butty Jean Francois | Method of producing a metal hollow body, hollow bodies produced according to this method and device for carrying out this method |
-
1979
- 1979-01-31 JP JP1067579A patent/JPS55103210A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996022845A1 (en) * | 1995-01-25 | 1996-08-01 | Butty Jean Francois | Method of producing a metal hollow body, hollow bodies produced according to this method and device for carrying out this method |
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