GB873072A - A method of and apparatus for relieving internal stresses in the welds of tubes and containers - Google Patents
A method of and apparatus for relieving internal stresses in the welds of tubes and containersInfo
- Publication number
- GB873072A GB873072A GB776/58A GB77658A GB873072A GB 873072 A GB873072 A GB 873072A GB 776/58 A GB776/58 A GB 776/58A GB 77658 A GB77658 A GB 77658A GB 873072 A GB873072 A GB 873072A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tubes
- jan
- voltage supplied
- heating
- coil
- 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.)
- Expired
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
- 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)
- General Induction Heating (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
873,072. Stress relieving. DEUTSCHE EDELSTAHLWERKE A.G., and ALLGEMEINE ELEKTRICITATS - GESELL - SCHAFT. Jan. 8, 1958 [Jan. 8, 1957], No. 776/58. Class 72 [Also in Group XI] Weld seams ir tubes with wall thicknesses greater than 35mm. are stress relieved by external induction heating together with internal radiation heating heat insulation being provided in both axial 1 and radial directions. Weld seam 1 is heated by coil 2 separated therefrom by insulation 3 and internally heated by radiating elements 4 which comprise a heating plate 5 occupying one third of the length of box 6, the remander of which is filled with a ceramic thermal and electrical insulating material. The elements 4 may adhere to the inside of the tube by magnetic means shown at 8 which may be of the type in which the adhesive power can be switched off. This apparatus may be used to normalize or anneal from 650‹- 900<SP>‹</SP>C. The voltage supplied to the heaters 4 is maintained constant, the heating process being controlled by varying the voltage supplied to induction heating coil 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE873072X | 1957-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB873072A true GB873072A (en) | 1961-07-19 |
Family
ID=6816268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB776/58A Expired GB873072A (en) | 1957-01-08 | 1958-01-08 | A method of and apparatus for relieving internal stresses in the welds of tubes and containers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB873072A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777943A (en) * | 2019-03-14 | 2019-05-21 | 山东豪迈机械制造有限公司 | A kind of annealing device and weld seam heat treatment method |
-
1958
- 1958-01-08 GB GB776/58A patent/GB873072A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777943A (en) * | 2019-03-14 | 2019-05-21 | 山东豪迈机械制造有限公司 | A kind of annealing device and weld seam heat treatment method |
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