JPS57159204A - Production of seamless pipe of infinite length - Google Patents
Production of seamless pipe of infinite lengthInfo
- Publication number
- JPS57159204A JPS57159204A JP4602481A JP4602481A JPS57159204A JP S57159204 A JPS57159204 A JP S57159204A JP 4602481 A JP4602481 A JP 4602481A JP 4602481 A JP4602481 A JP 4602481A JP S57159204 A JPS57159204 A JP S57159204A
- Authority
- JP
- Japan
- Prior art keywords
- rolls
- mandrel
- pipe
- length
- pieces
- 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
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
PURPOSE:To produce a seamless pipe without any limit in length by delivering a heated metallic bar material while reducing its diameter with three pieces of rolls, and hollowing the same with a mandrel on the roll outlet side then cooling the same and drawing the pipe with a drawing die. CONSTITUTION:A carbon steel bar material 1 is heated to 1,100-1,200 deg.C with a heater 2, and is inserted into three pieces of rolls 3. The rolls 3 are provided with tapered surfaces 4 for reducing the diameter of the material 1 and tapered surfaces 5 for wrapping the material around a mandrel 6 to be described later. These rolls are disposed by deviating the axial lines thereof in a constant direction with respect to the material 1. As the rolls 3 revolve, the material 1 among the rolls 3 is fed in an axial direction while revolving around the axial center of the material 1. On the outlet side of the rolls 3, the leading end of the spindle type mandrel 6 is disposed opposite to the center of the material 1, and the central part of the material 1 is hollowed by this mandrel, whereby a pipe blank material is made. Next, the pipe blank material is cooled to 600-800 deg.C with a cooler 7 to increase strength, after which it is drawn with a drawing die 8, whereby the seamless steel pipe having no limits in length is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4602481A JPS57159204A (en) | 1981-03-28 | 1981-03-28 | Production of seamless pipe of infinite length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4602481A JPS57159204A (en) | 1981-03-28 | 1981-03-28 | Production of seamless pipe of infinite length |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57159204A true JPS57159204A (en) | 1982-10-01 |
| JPS6235843B2 JPS6235843B2 (en) | 1987-08-04 |
Family
ID=12735473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4602481A Granted JPS57159204A (en) | 1981-03-28 | 1981-03-28 | Production of seamless pipe of infinite length |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57159204A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6414053A (en) * | 1987-07-08 | 1989-01-18 | Toshiba Corp | Thermal head |
-
1981
- 1981-03-28 JP JP4602481A patent/JPS57159204A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6235843B2 (en) | 1987-08-04 |
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