JPS561241A - Production of screw-connected pipe - Google Patents
Production of screw-connected pipeInfo
- Publication number
- JPS561241A JPS561241A JP7462979A JP7462979A JPS561241A JP S561241 A JPS561241 A JP S561241A JP 7462979 A JP7462979 A JP 7462979A JP 7462979 A JP7462979 A JP 7462979A JP S561241 A JPS561241 A JP S561241A
- Authority
- JP
- Japan
- Prior art keywords
- die
- screw
- male screw
- mandrel
- forming
- 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
Landscapes
- Forging (AREA)
Abstract
PURPOSE: To obtain the thin-walled screw-connected pipe of good working accuracy and high screw strength by forming male screw part to one end of a blank pipe and female screw part to the other end through plastic deformation working by the use of forming dies, mandrels, etc.
CONSTITUTION: A cylindrical part 2 of a diameter slightly smaller than the minor diameter of male screw is formed by a forming die on the end part of a blank pipe 1. The die 4 is then pulled off and a female screw die 5 is inserted and the cylindrical body part 2 is so plastically worked as to be bitten into the female screw of the die 5 by a mandrel 6, after which the mandrel 6 and die 5 are removed to form a male screw part 3. Thence, a cylindrical body part 7 of an inside diameter slightly larger than the outside diameter of the male screw is formed on the other end part by a mandrel 9, after which the mandrel is removed and a male screw die 10 is inserted and the forming die 11 is moved to let the cylindrical part 7 bite into the male screw part of the die 10, whereby a female screw part 8 is formed. In this way, the thin-walled screw-connected pipe of high strength and long thread parts is obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7462979A JPS561241A (en) | 1979-06-15 | 1979-06-15 | Production of screw-connected pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7462979A JPS561241A (en) | 1979-06-15 | 1979-06-15 | Production of screw-connected pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS561241A true JPS561241A (en) | 1981-01-08 |
Family
ID=13552672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7462979A Pending JPS561241A (en) | 1979-06-15 | 1979-06-15 | Production of screw-connected pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS561241A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010086610A (en) * | 2001-07-09 | 2001-09-15 | 김학렬 | Method for manufacturing fittings |
| JP2011000604A (en) * | 2009-06-17 | 2011-01-06 | Shin Sanko Kokan:Kk | Steel tube with screw for piping |
| JP2016540642A (en) * | 2013-10-09 | 2016-12-28 | ハンティング エナジー サービシーズ、インクＨｕｎｔｉｎｇ Ｅｎｅｒｇｙ Ｓｅｒｖｉｃｅｓ，Ｉｎｃ． | Drill pipe upset forging process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230466A (en) * | 1975-09-04 | 1977-03-08 | Teraoka Seiko Co Ltd | Digital-type electronic weighing machine with label printer |
-
1979
- 1979-06-15 JP JP7462979A patent/JPS561241A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230466A (en) * | 1975-09-04 | 1977-03-08 | Teraoka Seiko Co Ltd | Digital-type electronic weighing machine with label printer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010086610A (en) * | 2001-07-09 | 2001-09-15 | 김학렬 | Method for manufacturing fittings |
| JP2011000604A (en) * | 2009-06-17 | 2011-01-06 | Shin Sanko Kokan:Kk | Steel tube with screw for piping |
| JP2016540642A (en) * | 2013-10-09 | 2016-12-28 | ハンティング エナジー サービシーズ、インクＨｕｎｔｉｎｇ Ｅｎｅｒｇｙ Ｓｅｒｖｉｃｅｓ，Ｉｎｃ． | Drill pipe upset forging process |
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