JPS5443810A - Treating method by induction heating - Google Patents
Treating method by induction heatingInfo
- Publication number
- JPS5443810A JPS5443810A JP10982877A JP10982877A JPS5443810A JP S5443810 A JPS5443810 A JP S5443810A JP 10982877 A JP10982877 A JP 10982877A JP 10982877 A JP10982877 A JP 10982877A JP S5443810 A JPS5443810 A JP S5443810A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- weld zone
- heating elements
- heating
- magnetic permeability
- 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
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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)
- General Induction Heating (AREA)
Abstract
PURPOSE:To apply the solution heat treatment, at the same time, to reduce the tensile residual stress and, in this way, to obtain the welded piping, etc. having excellent corrosion resistance and fatigue resistance, by performing the induction heating through ferritic steel, etc. at the quick heating of the surface of the material to be heated, such as austenitic steel, etc. CONSTITUTION:To the surface of the weld zone 8 of the stainless steel pipe 6 to be welded having large specific resistance/magnetic permeability, the heating elements 1 of ferritic steel, etc. having small specific resistance/magnetic permeability, are sticked losely or jointed. When the primary current of AC is passed through the inductors 2 arranged apart from the heating elements 1, the heating elements 1 and the pipe 6 generate heat, but the greater part of induced current is induced to the heating elements 1 having small specific resistance/magnetic permeability, so that the same temperature gradient as the heating of the most outer surface is obtained to the pipe 6. By quenching the pipe subsequently, the most external layer becomes to be heated rapidly and to the metallurgical properties at the weld zone and its neighborhood on the ineer surface of the pipe at the weld zone 8, the tensile residual stress at the weld zone 8 is reduced and can be converted to compression. Accordingly, the butt welded piping at which the stress corrosion cracking and fatigue crack have been prevented, is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10982877A JPS5443810A (en) | 1977-09-14 | 1977-09-14 | Treating method by induction heating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10982877A JPS5443810A (en) | 1977-09-14 | 1977-09-14 | Treating method by induction heating |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5443810A true JPS5443810A (en) | 1979-04-06 |
Family
ID=14520230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10982877A Pending JPS5443810A (en) | 1977-09-14 | 1977-09-14 | Treating method by induction heating |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5443810A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5926111U (en) * | 1982-08-12 | 1984-02-18 | 太田 金次郎 | Assembly structure of panel members |
JP2005100935A (en) * | 2003-08-25 | 2005-04-14 | Tokyo Denki Univ | Pipe induction heating device |
WO2009078859A1 (en) * | 2007-12-17 | 2009-06-25 | Micro Motion, Inc. | A method for reducing stress in a conduit brace assembly |
-
1977
- 1977-09-14 JP JP10982877A patent/JPS5443810A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5926111U (en) * | 1982-08-12 | 1984-02-18 | 太田 金次郎 | Assembly structure of panel members |
JP2005100935A (en) * | 2003-08-25 | 2005-04-14 | Tokyo Denki Univ | Pipe induction heating device |
WO2009078859A1 (en) * | 2007-12-17 | 2009-06-25 | Micro Motion, Inc. | A method for reducing stress in a conduit brace assembly |
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