CN214558522U - Flexible temperature control heating belt for welding seam - Google Patents
Flexible temperature control heating belt for welding seam Download PDFInfo
- Publication number
- CN214558522U CN214558522U CN202120664496.8U CN202120664496U CN214558522U CN 214558522 U CN214558522 U CN 214558522U CN 202120664496 U CN202120664496 U CN 202120664496U CN 214558522 U CN214558522 U CN 214558522U
- Authority
- CN
- China
- Prior art keywords
- welding
- heating coil
- induction heating
- temperature
- belt
- 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.)
- Active
Links
Images
Landscapes
- General Induction Heating (AREA)
Abstract
The utility model discloses a flexible temperature control heating belt for welding seams, which comprises an induction heating coil, wherein the induction heating coil is of a belt-shaped annular hollow structure and is packaged by cladding a high-temperature-resistant fireproof material; the high-temperature-resistant fireproof material is uniformly distributed with a plurality of permanent magnets, the permanent magnets are positioned on the same side face, and the induction heating coil is connected with a power supply quick connector. The utility model discloses a heating band self does not generate heat, and the security is high, and welding process need not take off, can realize preheating before the welding, weld in keep warm and weld the back slow cooling function, effectively prevent high-strength steel welding crackle production, guarantee the welding quality of box roof beam.
Description
Technical Field
The utility model belongs to the technical field of high strength steel box girder steel building site girth weld welding, concretely relates to flexible control by temperature change heating band of welding seam.
Background
With the requirement of modern steel bridge construction, large span is realized on the basis of not greatly increasing the engineering quantity, the section of a steel beam is reduced, the steel quantity is saved, and the application of high-strength steel is more and more extensive. For example, a Shanghai Tonghuan Yangjiang bridge which is built in 2016, uses 500MPa grade high-strength steel for the first time; the seven bridge of Wuhan Jianghuanhan, which was built in 2018, uses 690MPa grade high strength steel for the first time. The higher the steel grade is, the higher the carbon equivalent is, the poorer the weldability is, the high-strength steel is sensitive to welding preheating temperature and cooling speed, the probability of welding cracks is very high, particularly for high-altitude welding construction in a construction site, and in order to ensure the welding quality of a thick steel plate in the construction site and implement effective measures for preventing and resisting cracks of welding seams, an efficient preheating and slow cooling device is needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a flexible control by temperature change heating band of welding seam. The to-be-solved technical problem of the utility model is realized through following technical scheme:
a flexible temperature control heating belt for a welding seam comprises an induction heating coil, wherein the induction heating coil is of a belt-shaped annular hollow structure and is packaged by coating a high-temperature-resistant fireproof material; the high-temperature-resistant fireproof material is uniformly distributed with a plurality of permanent magnets, the permanent magnets are positioned on the same side face, and the induction heating coil is connected with a power supply quick connector.
Further, the width of the hollow part is 100-120 mm.
The utility model has the advantages that:
the utility model discloses a heat band self does not generate heat, and the security is high, and welding process need not take off, can realize preheating before the welding, weld in keep warm and weld the back slow cooling function, effectively prevent high-strength steel welding crackle production, guarantee the welding quality of girder steel.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the heating belt of the present invention in use on the left and right sides of the circumferential weld of the box-shaped steel beam;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
FIG. 4 is a side view of the structure of FIG. 2;
fig. 5 is a schematic view of the usage state of the heating belt at the upper and lower ends of the circumferential weld of the box-shaped steel beam.
Description of reference numerals:
1-induction heating coil; 2-a permanent magnet; 3-power supply quick connector; 4-an induction heater; 5-thermocouple.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.
Example 1
Referring to fig. 1, an embodiment of the present invention provides a flexible temperature control heating belt for a weld joint, including an induction heating coil 1, where the induction heating coil 1 is a belt-shaped annular hollow structure, and the induction heating coil 1 is packaged by wrapping a high temperature resistant fireproof cloth, so as to prevent the induction heating coil from being damaged during use; a plurality of permanent magnets 2 are uniformly distributed on the high-temperature-resistant fireproof cloth, the permanent magnets 2 are positioned on the same side face, and a power supply quick connector 3 is connected to the induction heating coil.
Further, the induction heating coil 1 is wound from a wire having a diameter of 8mm into a ring shape having a width of 150 mm; the induction heating coil 1 is attached to a weldment to be welded through a plurality of permanent magnets 2, and the weld groove is positioned in the center of the hollow part of the induction heating coil 1; and the interval between every two adjacent permanent magnets 2 is 0.5m, and the suction force of each permanent magnet 2 is not less than 1kg, so as to ensure the adhesive force of the induction heating coil 1 on the surface of the weldment.
Further, the width of the hollow part of the induction heating coil 1 is 100mm, the induction heating coil 1 is designed to be in a hollow structure, the welding groove is positioned in the hollow part, and the induction heating coil can be operated without taking down the heating belt during welding.
Example 2
Referring to fig. 2 to 5, an embodiment of the present invention provides a method for heating a circumferential weld of a box-shaped steel beam based on embodiment 1, where a flexible temperature control heating band for the weld is used in the heating method, and the method specifically includes the following steps:
step 1: according to the requirements of a welding process, two heating belts are in a group, the two heating belts are symmetrically arranged on two symmetrical welding grooves of a circumferential weld of a box-type steel beam, the heating belts are straightened and flattened, so that permanent magnets 2 are firmly adsorbed to the surfaces of the box-type steel beam respectively, the centers of hollow parts of the heating belts are aligned to the centers of the welding grooves of the weld, and the two heating belts are connected with an electromagnetic induction heater 4 through power quick connectors 3 respectively. Wherein the electromagnetic induction heater is MYD-20KW in model.
It should be noted that the box-shaped steel beam is formed by single-side welding and double-side forming, so that two heating belts are arranged on two symmetrical welding grooves of the box-shaped steel beam respectively, and the heating belts do not need to be arranged on the inner sides opposite to the welding grooves.
Step 2: two thermocouples 5 are respectively inserted between the two heating belts and the surface of the box-shaped steel beam, the two thermocouples 5 are respectively connected with the electromagnetic induction heater 4, and the heating temperature is set on the electromagnetic induction heater 4.
And step 3: starting the electromagnetic induction heater 4, heating the welding groove by the two heating belts at the same time, measuring the surface temperature of the exposed box-shaped steel beam at the hollow part of the heating belts by using an infrared thermometer after the temperature displayed on the electromagnetic induction heater 4 reaches the set heating temperature, and starting welding operation when the difference between the measured temperature and the temperature displayed on the electromagnetic induction heater 4 is within 10 ℃;
and 4, step 4: after welding is finished, setting a cooling time length on the electromagnetic induction heater 4, and simultaneously and slowly cooling the inner heating belt and the outer heating belt so as to slowly cool the welding seam; the cooling time is not shorter than the natural cooling time after the welding of the box-shaped steel beam. Thereby avoiding the influence on the welding seam caused by too fast natural cooling.
And 5: and (4) removing the heating belt and the thermocouple 5 after the welding line is cooled, and repeating the step 1 to the step 4 to complete the welding of the other two welding grooves of the circumferential welding line of the box-shaped steel beam.
The utility model discloses a heating band self does not generate heat, and the security is high, and welding process need not take off, can realize preheating before the welding, weld in keep warm and weld the back slow cooling function, effectively prevent high-strength steel welding crackle and produce to welding quality has been guaranteed.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (2)
1. A flexible temperature control heating belt for a welding seam is characterized by comprising an induction heating coil, wherein the induction heating coil is of a belt-shaped annular hollow structure and is packaged by coating a high-temperature-resistant fireproof material; the high-temperature-resistant fireproof material is uniformly distributed with a plurality of permanent magnets, the permanent magnets are positioned on the same side face, and the induction heating coil is connected with a power supply quick connector.
2. The flexible temperature-controlled heating band for welding seams as claimed in claim 1, wherein the width of the hollow part is 100-120 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120664496.8U CN214558522U (en) | 2021-04-01 | 2021-04-01 | Flexible temperature control heating belt for welding seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120664496.8U CN214558522U (en) | 2021-04-01 | 2021-04-01 | Flexible temperature control heating belt for welding seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214558522U true CN214558522U (en) | 2021-11-02 |
Family
ID=78322662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120664496.8U Active CN214558522U (en) | 2021-04-01 | 2021-04-01 | Flexible temperature control heating belt for welding seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214558522U (en) |
-
2021
- 2021-04-01 CN CN202120664496.8U patent/CN214558522U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100485305C (en) | Heat radiator and its manufacturing method | |
| CN108747065B (en) | Manufacturing process of large-specification thin-wall TA5 alloy sheet with T-shaped rib plate | |
| CN105006492A (en) | Segmented serrated solder strip and photovoltaic module and preparation method thereof | |
| CN107091093B (en) | The device and method of Shield-bored tunnels has been deformed based on marmem reparation | |
| CN112958969A (en) | Welding seam flexible temperature control heating belt and heating method for circumferential welding seam of box-type steel beam | |
| CN214558522U (en) | Flexible temperature control heating belt for welding seam | |
| CN104404216A (en) | Local heat treatment technology for welding cylindrical shell | |
| CN204771023U (en) | Automatic series welding machine of solar battery subassembly | |
| CN204809229U (en) | Area is welded to segmentation garland formula and photovoltaic module thereof | |
| CN105023967A (en) | Trapezoidal welding strip and photovoltaic module as well as preparation method thereof | |
| CN105171261B (en) | A kind of welding method of large-scale steelmaking converter body of heater | |
| JP2681589B2 (en) | Heat treatment method for welded pipe joints | |
| CN214392940U (en) | Device for reinforcing structural strength of honeycomb panel | |
| US3612813A (en) | Method of forming a lightweight metal sandwich having a honeycomb core | |
| CN107186316A (en) | It is a kind of to connect the distortion-free welding procedure of condenser welding for large-size steam turbine low pressure (LP) cylinder | |
| CN106271466A (en) | Nuclear power half speed steam turbine generator outlet terminal welding method | |
| CN214721634U (en) | Positioning welding heating module | |
| CN110551881B (en) | Cooling-free induction heater for postweld heat treatment of small-diameter calandria and manufacturing method thereof | |
| CN210620873U (en) | Cooling-free induction heater for postweld heat treatment of small-diameter calandria | |
| CN204857755U (en) | Trapezoidal area of welding and photovoltaic module thereof | |
| JPS6240041A (en) | Manufacture of field coils | |
| CN107248420B (en) | The installation method of steel containment vessel of nuclear power station electrical penetration | |
| CN210829392U (en) | Hot-melting gasket | |
| KR101675005B1 (en) | High frequency heating equipment and method using the same | |
| CN206335244U (en) | One kind diffusion soldering equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |