JPS55126341A - Production of double pipe - Google Patents
Production of double pipeInfo
- Publication number
- JPS55126341A JPS55126341A JP3393179A JP3393179A JPS55126341A JP S55126341 A JPS55126341 A JP S55126341A JP 3393179 A JP3393179 A JP 3393179A JP 3393179 A JP3393179 A JP 3393179A JP S55126341 A JPS55126341 A JP S55126341A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical
- cup
- hole
- double pipe
- cylindrical material
- 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
- Metal Extraction Processes (AREA)
Abstract
PURPOSE: To obtain the double pipe blank of superior adhesiveness between inside and outside metals by fitting a dissimilar metal cylindrical material having a protruding part of a required length into a steel-made cup material, bending the protruding part outward to engage the same to the cup material then expanding the diameter of the cylindrical material.
CONSTITUTION: The inside peripheral surface of a cup material 1 formed by a press piercing method from a steel ingot of carbon steel or the like is sufficiently polished, after which a cylindrical material 2 formed of a stainless steel plate or the like is fitted therein. At this time, the cylindrical material is made longer by about 5W10% from the cup material and a hole 5 communicating with the inside and outside surfaces is pierced to its bottom end. A tap 3 is inserted to flange the protrusion of the cylindrical member, after which a mandrel 4 is press-inserted to expand the diameter of the cylindrical material and is pressure-contacted to the inside surface of the cup material. The air interposing between both the materials gose out through the hole 5 and the air vent 5' of the mandrel. Finarlly, the outside circumferential end face of the flange and hole 5 are sealed by welding to finish the double pipe blank 6.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3393179A JPS55126341A (en) | 1979-03-22 | 1979-03-22 | Production of double pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3393179A JPS55126341A (en) | 1979-03-22 | 1979-03-22 | Production of double pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55126341A true JPS55126341A (en) | 1980-09-30 |
| JPS6115764B2 JPS6115764B2 (en) | 1986-04-25 |
Family
ID=12400253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3393179A Granted JPS55126341A (en) | 1979-03-22 | 1979-03-22 | Production of double pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55126341A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0913213A1 (en) * | 1997-10-21 | 1999-05-06 | Pierangelo Girardello | Metalworking method and product obtained with the method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62296570A (en) * | 1986-06-17 | 1987-12-23 | Matsushita Electric Ind Co Ltd | Illuminant supporter |
-
1979
- 1979-03-22 JP JP3393179A patent/JPS55126341A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0913213A1 (en) * | 1997-10-21 | 1999-05-06 | Pierangelo Girardello | Metalworking method and product obtained with the method |
| US6098436A (en) * | 1997-10-21 | 2000-08-08 | Girardello; Pierangelo | Metalworking method and product obtained with the method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6115764B2 (en) | 1986-04-25 |
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