JPS56136223A - Manufacture of tee joint - Google Patents
Manufacture of tee jointInfo
- Publication number
- JPS56136223A JPS56136223A JP4078780A JP4078780A JPS56136223A JP S56136223 A JPS56136223 A JP S56136223A JP 4078780 A JP4078780 A JP 4078780A JP 4078780 A JP4078780 A JP 4078780A JP S56136223 A JPS56136223 A JP S56136223A
- Authority
- JP
- Japan
- Prior art keywords
- wall thickness
- pipe
- branch
- diameter
- tee joint
- 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
Abstract
PURPOSE: To smooth both end faces of a blank pipe after constricting its diameter, to increase wall thickness of a crotch and a branch, and to manufacture a durable, lightweight tee joint in good yields, by previously giving a longitudinal compression to the branching side of an elliptical pipe before constricting the diameter.
CONSTITUTION: After heating the elliptical pipe 1, the branching side is compressed from both sides by using the press 7, etc., to the extent possible to absorb the over- filling caused by the constriction of diameter. Next, an open hole is bored at the scheduled branching part by the drill. While this elliptical pipe 1 is being compressed in the longitudinal direction by the press 2, a part of wall thickness is drawn in the direction of compression by using the plug 3 and the die 4. According to the present method, the over-filling at the pipe end is prevented and the wall thickness of the crotch and the branch is increased, so that the mechanical strength is improved. Moreover, since the height of the branch is increased as a result of increase in the wall thickness of the branch, the wall thickness of the original pipe thinned and the weight of the product tee joint is lightened.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4078780A JPS56136223A (en) | 1980-03-28 | 1980-03-28 | Manufacture of tee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4078780A JPS56136223A (en) | 1980-03-28 | 1980-03-28 | Manufacture of tee joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56136223A true JPS56136223A (en) | 1981-10-24 |
Family
ID=12590324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4078780A Pending JPS56136223A (en) | 1980-03-28 | 1980-03-28 | Manufacture of tee joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56136223A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2492951C1 (en) * | 2012-01-24 | 2013-09-20 | Борис Васильевич Маркин | Method of forging large-sized thick-wall steel tees for nuclear power engineering, oil-and-gas industry and heat and water supply systems by extruding branch pipe from inside of tube billet, and system to this end |
| CN115475850A (en) * | 2022-08-31 | 2022-12-16 | 河北沧海核装备科技股份有限公司 | Forming process and equipment of three-way pipe for pipeline engineering |
-
1980
- 1980-03-28 JP JP4078780A patent/JPS56136223A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2492951C1 (en) * | 2012-01-24 | 2013-09-20 | Борис Васильевич Маркин | Method of forging large-sized thick-wall steel tees for nuclear power engineering, oil-and-gas industry and heat and water supply systems by extruding branch pipe from inside of tube billet, and system to this end |
| CN115475850A (en) * | 2022-08-31 | 2022-12-16 | 河北沧海核装备科技股份有限公司 | Forming process and equipment of three-way pipe for pipeline engineering |
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