JPS5666308A - Manufacture of seamless steel pipe - Google Patents
Manufacture of seamless steel pipeInfo
- Publication number
- JPS5666308A JPS5666308A JP14025379A JP14025379A JPS5666308A JP S5666308 A JPS5666308 A JP S5666308A JP 14025379 A JP14025379 A JP 14025379A JP 14025379 A JP14025379 A JP 14025379A JP S5666308 A JPS5666308 A JP S5666308A
- Authority
- JP
- Japan
- Prior art keywords
- caliber
- bloom
- pusher
- square bloom
- seamless steel
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 2
- 239000010959 steel Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000005096 rolling process Methods 0.000 abstract 2
- 230000001502 supplementing effect Effects 0.000 abstract 1
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
- B21B17/08—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 having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To preliminarily roll the square bloom to form into the required section, for the purpose of rolling the seamless steel pipes in various sizes, and to improve the productivity, by arranging the pusher on the feed-in side of the horizontal roll possessing plural box calibers and the semicircular caliber. CONSTITUTION:The pusher 7 is transferred toward the comparatively large box caliber 3 or the comparatively small caliber 4 of the upper and lower horizontal rolls 1, 2, of the press piercing mill, in order to press the square bloom 9A, for supplementing the rolling work to obtain the square bloom 9B of the required sectional size. Next, this preliminarily rolled square bloom 9B is held by the boxlike guide 10 and is fed into the semicircular caliber 5 or 6 of the horizontal rolls 1, 2; then, while being pressed by the pusher 7, the bloom 9B is pierced by the piercing plug 8, and is formed into the hollow pipe blank 9C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14025379A JPS5666308A (en) | 1979-10-30 | 1979-10-30 | Manufacture of seamless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14025379A JPS5666308A (en) | 1979-10-30 | 1979-10-30 | Manufacture of seamless steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5666308A true JPS5666308A (en) | 1981-06-04 |
Family
ID=15264471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14025379A Pending JPS5666308A (en) | 1979-10-30 | 1979-10-30 | Manufacture of seamless steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5666308A (en) |
-
1979
- 1979-10-30 JP JP14025379A patent/JPS5666308A/en active Pending
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