JPS5554524A - Solution heat treating method - Google Patents
Solution heat treating methodInfo
- Publication number
- JPS5554524A JPS5554524A JP12620778A JP12620778A JPS5554524A JP S5554524 A JPS5554524 A JP S5554524A JP 12620778 A JP12620778 A JP 12620778A JP 12620778 A JP12620778 A JP 12620778A JP S5554524 A JPS5554524 A JP S5554524A
- Authority
- JP
- Japan
- Prior art keywords
- stress
- pipe
- mirror
- weld zone
- soln
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE:To prevent occurrence of stress corrosion cracking in an austenitic stainless steel pipe or the like by soln.-heat-treating the inside of the weld zone of the pipe by heating with laser beams to convert the welding residual stress from tensile stress to compressive stress. CONSTITUTION:Laser beams 2 emitted from laser source 1 are reflected by mirror 3 and allowed to arrive at the inside of steel pipe 6 to be treated. Water sprinkler 4 fitted with a mirror is set in the vicinity of the weld zone in pipe 6, and the beams are reflected by the mirror and applied to weld metal 7. The periphery of the weld zone heated to 700-1100 deg.C is then quenched with water sprayed, whereby it is soln.-heat- treated to convert the welding residual stress from tensile stress of 20- 30kg/mm<2> to compressive stress of 5-10kg/mm<2>, thus enhancing the stress corrosion cracking resistance of the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12620778A JPS5554524A (en) | 1978-10-16 | 1978-10-16 | Solution heat treating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12620778A JPS5554524A (en) | 1978-10-16 | 1978-10-16 | Solution heat treating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5554524A true JPS5554524A (en) | 1980-04-21 |
Family
ID=14929356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12620778A Pending JPS5554524A (en) | 1978-10-16 | 1978-10-16 | Solution heat treating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5554524A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60165323A (en) * | 1984-02-09 | 1985-08-28 | Univ Nagoya | Prevention of weld decay in stainless steel welded part |
| JPS6152315A (en) * | 1984-08-17 | 1986-03-15 | Mitsubishi Electric Corp | Method for desensitizing austenitic stainless steel |
| JPS6152316A (en) * | 1984-08-17 | 1986-03-15 | Mitsubishi Electric Corp | Desensitization treatment device for austenitic stainless steel |
| JPH07246483A (en) * | 1994-03-09 | 1995-09-26 | Toshiba Corp | Laser peening method |
| WO2011035780A1 (en) * | 2009-09-23 | 2011-03-31 | Acument Gmbh & Co Ohg | Parts welded in a rotationally symmetrical manner |
| CN102517423A (en) * | 2011-12-29 | 2012-06-27 | 江苏大学 | Reinforcement method for small hole |
| CN103421933A (en) * | 2013-04-22 | 2013-12-04 | 常州大学 | Method for eliminating residual stress of welding joint of X80 pipeline steel |
-
1978
- 1978-10-16 JP JP12620778A patent/JPS5554524A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60165323A (en) * | 1984-02-09 | 1985-08-28 | Univ Nagoya | Prevention of weld decay in stainless steel welded part |
| JPS6152315A (en) * | 1984-08-17 | 1986-03-15 | Mitsubishi Electric Corp | Method for desensitizing austenitic stainless steel |
| JPS6152316A (en) * | 1984-08-17 | 1986-03-15 | Mitsubishi Electric Corp | Desensitization treatment device for austenitic stainless steel |
| JPH07246483A (en) * | 1994-03-09 | 1995-09-26 | Toshiba Corp | Laser peening method |
| WO2011035780A1 (en) * | 2009-09-23 | 2011-03-31 | Acument Gmbh & Co Ohg | Parts welded in a rotationally symmetrical manner |
| US9289863B2 (en) | 2009-09-23 | 2016-03-22 | Ruia Global Fasteners Ag | Parts welded in a rotationally symmetrical manner |
| CN102517423A (en) * | 2011-12-29 | 2012-06-27 | 江苏大学 | Reinforcement method for small hole |
| CN103421933A (en) * | 2013-04-22 | 2013-12-04 | 常州大学 | Method for eliminating residual stress of welding joint of X80 pipeline steel |
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