JPS57142709A - Controlling method of wall thickness in skew rolling mill - Google Patents
Controlling method of wall thickness in skew rolling millInfo
- Publication number
- JPS57142709A JPS57142709A JP56027187A JP2718781A JPS57142709A JP S57142709 A JPS57142709 A JP S57142709A JP 56027187 A JP56027187 A JP 56027187A JP 2718781 A JP2718781 A JP 2718781A JP S57142709 A JPS57142709 A JP S57142709A
- Authority
- JP
- Japan
- Prior art keywords
- rolls
- wall thickness
- hollow shell
- gap
- controlling
- 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
- 238000000034 method Methods 0.000 title 1
- 238000005096 rolling process Methods 0.000 title 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
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
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE:To manufacture a hollow shell and seamless pipe both having uniform wall thickness without causing defects, by changing a roll gap in accordance with a previously determined controlling-pattern, in a skew mill. CONSTITUTION:A controlling pattern of roll gap is inputted previously to a control part CN, and the gap between rolls 1l and 1r is also previously set to be a gap of an hollow shell to a top which is determined in accordance with the controlling pattern. A command signal is outputted from the part CN to a setting device 18 simultaneously after receiving a detecting signal detecting that the hollow shell H is bitten between the rolls 1l and 1r. A starting signal is outputted to a motor from the device 18 to rotate screwed rods 16f, 16f through transmission systems 17l, 17r so as to move supporting frames 15l, 15r in the direction opposing to each other. The rolls 1l, 1r are isolated from a plug 2 according to the movement of the shell H, and the hollow shell having uniform wall thickness through from the top to the bottom is rolled regardless of thermal expansions of the rolls 1l, 1r and the plug 2 due to the thermal effects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56027187A JPS57142709A (en) | 1981-02-25 | 1981-02-25 | Controlling method of wall thickness in skew rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56027187A JPS57142709A (en) | 1981-02-25 | 1981-02-25 | Controlling method of wall thickness in skew rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57142709A true JPS57142709A (en) | 1982-09-03 |
Family
ID=12214067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56027187A Pending JPS57142709A (en) | 1981-02-25 | 1981-02-25 | Controlling method of wall thickness in skew rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57142709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63238907A (en) * | 1987-03-27 | 1988-10-05 | Sumitomo Metal Ind Ltd | Manufacture of seamless tube |
-
1981
- 1981-02-25 JP JP56027187A patent/JPS57142709A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63238907A (en) * | 1987-03-27 | 1988-10-05 | Sumitomo Metal Ind Ltd | Manufacture of seamless tube |
| JPH0561003B2 (en) * | 1987-03-27 | 1993-09-03 | Sumitomo Metal Ind |
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