GB936972A - Device for use in the heat-treatment of welded pipes - Google Patents
Device for use in the heat-treatment of welded pipesInfo
- Publication number
- GB936972A GB936972A GB2634662A GB2634662A GB936972A GB 936972 A GB936972 A GB 936972A GB 2634662 A GB2634662 A GB 2634662A GB 2634662 A GB2634662 A GB 2634662A GB 936972 A GB936972 A GB 936972A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat
- blocks
- hoops
- exothermic
- parts
- 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)
- Heat Treatment Of Articles (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
936,972. Heat-treating pipe welds; exothermic compositions. KEMWELL A.G. July 10, 1962 [July 9, 1962], No. 26346/62. Classes 72 and 82. A heat-treatment for stress-relieving the welded area of butt-welded pipes comprises locating loosely around the pipes 4 in the region of the weld 5 two metal hoops 6 having tightening means, e.g. screws 7, locating in engagement with such hoops a plurality of adjacent exothermic composition blocks 1, each of which has embedded therein, or otherwise secured thereto, a metal strip 2, the ends 3 of which extend adjacent to the pipe beyond two opposite faces of the block and lie under the metal hoops, tightening the hoops to secure the blocks by the metal strip ends 3, firing the blocks and allowing them to cool in situ. The blocks may be multi-layer, at least one layer being of exothermic composition and at least one of heat-insulating composition, and may be moulded from mouldable compositions with the metal strip in the mould; or outer and end sleeves of heat-insulating material, similarly moulded, may enclose the exothermic sleeve. An example of an exothermic composition is: finely divided aluminium 30 parts, oxidizing agent, e.g. nitrates, chlorates, iron oxide and/or manganese dioxide 13 parts, and refractory filler, e.g. grog, sand, furnace aggregate or chamotte 42 parts, all by weight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2634662A GB936972A (en) | 1962-07-09 | 1962-07-09 | Device for use in the heat-treatment of welded pipes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2634662A GB936972A (en) | 1962-07-09 | 1962-07-09 | Device for use in the heat-treatment of welded pipes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB936972A true GB936972A (en) | 1963-09-18 |
Family
ID=10242231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2634662A Expired GB936972A (en) | 1962-07-09 | 1962-07-09 | Device for use in the heat-treatment of welded pipes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB936972A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3461543A (en) * | 1964-12-04 | 1969-08-19 | Yawata Welding Electrode Co | Brazing process |
US3751308A (en) * | 1971-07-19 | 1973-08-07 | Exomet | Flexible exothermic mat and method of use |
CN107012312A (en) * | 2017-06-08 | 2017-08-04 | 中国电建集团核电工程公司 | Segmented oxygen-eliminating device terminating girth joint heat treatment auxiliary device |
WO2019083566A1 (en) * | 2017-10-24 | 2019-05-02 | Siemens Aktiengesellschaft | Method of temper bead welding using a conformal heat conductive material for stress reduction |
WO2024037271A1 (en) * | 2022-08-17 | 2024-02-22 | 东方电气(广州)重型机器有限公司 | Heating support device for welding seams between spherical sealing head and inner and outer surfaces of barrel, and heating device |
-
1962
- 1962-07-09 GB GB2634662A patent/GB936972A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3461543A (en) * | 1964-12-04 | 1969-08-19 | Yawata Welding Electrode Co | Brazing process |
US3751308A (en) * | 1971-07-19 | 1973-08-07 | Exomet | Flexible exothermic mat and method of use |
CN107012312A (en) * | 2017-06-08 | 2017-08-04 | 中国电建集团核电工程公司 | Segmented oxygen-eliminating device terminating girth joint heat treatment auxiliary device |
WO2019083566A1 (en) * | 2017-10-24 | 2019-05-02 | Siemens Aktiengesellschaft | Method of temper bead welding using a conformal heat conductive material for stress reduction |
WO2024037271A1 (en) * | 2022-08-17 | 2024-02-22 | 东方电气(广州)重型机器有限公司 | Heating support device for welding seams between spherical sealing head and inner and outer surfaces of barrel, and heating device |
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