GB986074A - Heat treatment of welds - Google Patents
Heat treatment of weldsInfo
- Publication number
- GB986074A GB986074A GB812763A GB812763A GB986074A GB 986074 A GB986074 A GB 986074A GB 812763 A GB812763 A GB 812763A GB 812763 A GB812763 A GB 812763A GB 986074 A GB986074 A GB 986074A
- Authority
- GB
- United Kingdom
- Prior art keywords
- exothermic
- secured
- blanket
- housing
- weld
- 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)
- Ceramic Products (AREA)
Abstract
<PICT:0986074/C6-C7/1> Welds are heat-treated by applying to the region thereof a body of an exothermic composition around which and spaced therefrom is a housing formed of flexible heat resisting material, the cavity thus formed being filled with a particulate heat-insulating material. After firing the exothermic composition the housing is closed and the composition allowed to burn out and cool in situ. The housing may be formed of asbestos or metal sheet or preferably of metal mesh, and the insulating material may be exfoliated vermiculite or pearlite. As shown in Fig. 1, weld 2 between pipes 1 is heated by exothermic sleeve 3. Struts 5 surrounding the weld are secured by straps 4, one end of flexible blanket 6 being secured to strut 5a, e.g. by eyelets. The blanket is then wrapped round the weld zone, possibly being secured to strut 5b, and its edges fastened by bands 7. The cavity so formed is then filled with particulate material, the exothermic body fired and the free end of the blanket brought forward to cover the opening between struts 5a and 5b. Specification 898,232 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB812763A GB986074A (en) | 1963-02-28 | 1963-02-28 | Heat treatment of welds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB812763A GB986074A (en) | 1963-02-28 | 1963-02-28 | Heat treatment of welds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB986074A true GB986074A (en) | 1965-03-17 |
Family
ID=9846280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB812763A Expired GB986074A (en) | 1963-02-28 | 1963-02-28 | Heat treatment of welds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB986074A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115948647A (en) * | 2023-02-10 | 2023-04-11 | 中建五洲工程装备有限公司 | Heat treatment equipment for on-site butt weld of U rib of steel box girder top plate |
-
1963
- 1963-02-28 GB GB812763A patent/GB986074A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115948647A (en) * | 2023-02-10 | 2023-04-11 | 中建五洲工程装备有限公司 | Heat treatment equipment for on-site butt weld of U rib of steel box girder top plate |
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