JPS5594787A - Gas pressure welding method of steel pipe for piping - Google Patents
Gas pressure welding method of steel pipe for pipingInfo
- Publication number
- JPS5594787A JPS5594787A JP42379A JP42379A JPS5594787A JP S5594787 A JPS5594787 A JP S5594787A JP 42379 A JP42379 A JP 42379A JP 42379 A JP42379 A JP 42379A JP S5594787 A JPS5594787 A JP S5594787A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- temperature
- joint part
- piping
- steel pipes
- 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
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
PURPOSE: To gas-pressure-weld the steel pipes for piping without hardly producing flares by maintaining the joint part of the steel pipes under the specific pressure between the temperature at which the outside surface of the joint part of the steel pipes becomes red heat and a correct bonding temperature and applying bonding pressure when the correct bonding temperature is reached.
CONSTITUTION: While the respective end parts of steel pipes 1, 1' for piping of a relatively low C contents are being heated with O2-acetylene flame, they are pressure-welded by the following method. Namely, the pressure below 1/2 the minimum tensile strength value for not producing the flare, e.g., 0.15kg/cm2 or less is applied thereto between the temperature at which the outside surface of the joint 2 becomes red heat by this heating and when the inside surface of the joint part 2 reaches 1300°C. When the temperature of the joint part 2 reaches 600°C or more, the pipe outside surface becomes red heat state. Next, when the pipe inside surface of the joint part 2 reaches the correct temperature for welding start of not reaching the melting point and above 1300°C, pressing pressure is applied to the pipes 1, 1'. E.g., the pipes 1, 1' are pressure welded under the pressing force 1kg/cm2 or smaller.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP42379A JPS5855872B2 (en) | 1979-01-09 | 1979-01-09 | Gas pressure welding method for steel pipes for piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP42379A JPS5855872B2 (en) | 1979-01-09 | 1979-01-09 | Gas pressure welding method for steel pipes for piping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5594787A true JPS5594787A (en) | 1980-07-18 |
| JPS5855872B2 JPS5855872B2 (en) | 1983-12-12 |
Family
ID=11473385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP42379A Expired JPS5855872B2 (en) | 1979-01-09 | 1979-01-09 | Gas pressure welding method for steel pipes for piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855872B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH023742Y2 (en) * | 1984-09-14 | 1990-01-29 |
-
1979
- 1979-01-09 JP JP42379A patent/JPS5855872B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5855872B2 (en) | 1983-12-12 |
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