JPS5785684A - Production of doubleply pipes - Google Patents
Production of doubleply pipesInfo
- Publication number
- JPS5785684A JPS5785684A JP16201280A JP16201280A JPS5785684A JP S5785684 A JPS5785684 A JP S5785684A JP 16201280 A JP16201280 A JP 16201280A JP 16201280 A JP16201280 A JP 16201280A JP S5785684 A JPS5785684 A JP S5785684A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- pipes
- water
- temp
- outside
- 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
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
PURPOSE: To return expanded inside and outside pipes to natural temp. and tightly fit doubleply pipes with a sufficient interference by releasing explosive force in the inside pipe filled with water and inserted into a heated outside pipe thereby cooling the outside pipe and elevating the temp. of the inside pipe.
CONSTITUTION: An inside pipe 2 is inserted into an outside pipe 1, and the end parts of the inside pipe 2 are tightly sealed with caps 4, 4 extended with bar- like gunpowder 3. Next, these are clamped with oil hydraulic support members 5, 5, and the water 7 cooled to prescribed temp. is supplied through one water feed port 6 with check valve of the cap 4 and through a pipe 8, whereby the water is filled therein. The pipe 2 is reduced of diameter, and an oil jacket 10 preheated with heating oil 9 from the outer side of the pipe 1 is brought closer to cause pipe expansion under heating. Thence, an initiating agent 12 is exploded by a lead 11 to explode the gunpowder 3 instantaneously, by which the pipes 2, 1 are expanded and increased of diameters. Immediately after this, the valve 13 of the other cap 4 is opened to discharge cooling water; at the same time the oil jacket 10 is detached from the pipe 1 and the pipes 2, 2 are returned to natural temp. Then, the pipe 1 reduces and the pipe 2 expands, thereby forming a thorough fit.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16201280A JPS5855847B2 (en) | 1980-11-19 | 1980-11-19 | Double tube manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16201280A JPS5855847B2 (en) | 1980-11-19 | 1980-11-19 | Double tube manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5785684A true JPS5785684A (en) | 1982-05-28 |
JPS5855847B2 JPS5855847B2 (en) | 1983-12-12 |
Family
ID=15746366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16201280A Expired JPS5855847B2 (en) | 1980-11-19 | 1980-11-19 | Double tube manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5855847B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62258281A (en) * | 1986-05-01 | 1987-11-10 | 川崎重工業株式会社 | Corrosion-resistant double pipe and manufacture |
JPH01229188A (en) * | 1988-03-10 | 1989-09-12 | Kawasaki Heavy Ind Ltd | Manufacture of duplex tube |
CN104028957A (en) * | 2014-05-19 | 2014-09-10 | 新兴铸管股份有限公司 | Method for manufacturing hot extrusion composite bimetallic seamless steel tube |
CN105215219A (en) * | 2015-10-28 | 2016-01-06 | 中国重型机械研究院股份公司 | The composite bimetal pipe formation system of a kind of heating and hydraulic pressure coupling |
CN105290602A (en) * | 2015-11-19 | 2016-02-03 | 中钢集团马鞍山矿山研究院有限公司 | Method for preparing explosive cladding metal bar |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS598748U (en) * | 1982-07-08 | 1984-01-20 | 九州日立マクセル株式会社 | electric knife sharpener |
CN103629445B (en) * | 2013-12-05 | 2016-01-20 | 青岛中瑞泰软控技术有限公司 | A kind of composite pipe Hydraulic expansion method and producing device and the composite pipe obtained thereof |
-
1980
- 1980-11-19 JP JP16201280A patent/JPS5855847B2/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62258281A (en) * | 1986-05-01 | 1987-11-10 | 川崎重工業株式会社 | Corrosion-resistant double pipe and manufacture |
JPH059671B2 (en) * | 1986-05-01 | 1993-02-05 | Kawasaki Heavy Ind Ltd | |
JPH01229188A (en) * | 1988-03-10 | 1989-09-12 | Kawasaki Heavy Ind Ltd | Manufacture of duplex tube |
CN104028957A (en) * | 2014-05-19 | 2014-09-10 | 新兴铸管股份有限公司 | Method for manufacturing hot extrusion composite bimetallic seamless steel tube |
CN105215219A (en) * | 2015-10-28 | 2016-01-06 | 中国重型机械研究院股份公司 | The composite bimetal pipe formation system of a kind of heating and hydraulic pressure coupling |
CN105215219B (en) * | 2015-10-28 | 2017-09-26 | 中国重型机械研究院股份公司 | A kind of composite bimetal pipe formation system heated with hydraulic pressure coupling |
CN105290602A (en) * | 2015-11-19 | 2016-02-03 | 中钢集团马鞍山矿山研究院有限公司 | Method for preparing explosive cladding metal bar |
CN105290602B (en) * | 2015-11-19 | 2017-06-06 | 中钢集团马鞍山矿山研究院有限公司 | A kind of preparation method of Explosion composite metal bar |
Also Published As
Publication number | Publication date |
---|---|
JPS5855847B2 (en) | 1983-12-12 |
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