CN216391460U - Non-contact induction heating preheating device - Google Patents
Non-contact induction heating preheating device Download PDFInfo
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- CN216391460U CN216391460U CN202120628463.8U CN202120628463U CN216391460U CN 216391460 U CN216391460 U CN 216391460U CN 202120628463 U CN202120628463 U CN 202120628463U CN 216391460 U CN216391460 U CN 216391460U
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Abstract
The utility model discloses a non-contact induction heating preheating device which comprises a moving seat, wherein a lifting mechanism is arranged on the moving seat, a rotatable C-shaped induction heater is arranged on the lifting mechanism, and the C-shaped induction heater is used for preheating a workpiece to be welded and carrying out heat preservation work after welding; the C-shaped induction heater comprises a plurality of groups of frameworks and induction coils erected on the frameworks, the frameworks are sequentially and rotatably connected together to form a C-shaped appearance, and the frameworks are covered on the surface of a barrel workpiece. The utility model solves the problems of butt girth welding of a cylinder workpiece, replaces the traditional flame heating, can be lifted and adjusted according to the diameter of a welding seam, and has multiple functions; saves the heat treatment labor force and can realize automatic temperature control.
Description
Technical Field
The utility model relates to a non-contact induction heating preheating device.
Background
Welding is one of the hot working methods of metals. Especially, when the common low alloy structural steel and the thick plate with higher carbon content are welded, the internal structure of the metal is changed variously due to the influence of the welding heat cycle of high-temperature heating and cooling on the local part of the metal, and the mechanical property of a welding joint is directly influenced. In addition, due to the influence of the metallurgical conditions of the weld and the different heating and cooling rates, structural inhomogeneities of the weld seam and the heat-affected zone can be caused, which also indirectly and directly influence the mechanical properties of the welded joint.
Therefore, before, during and after welding, it is necessary to change or improve the mechanical properties of the welded joint by heating, maintaining the temperature and controlling the cooling rate of the local or whole welded part.
Pre-heating before welding is a process measure for heating the welded part locally and wholly properly before welding. The method aims to reduce the cooling speed of a welding joint, avoid the generation of a hardening structure and reduce the welding stress and deformation, and is an effective method for preventing the generation of welding cracks. The method for preheating before welding mainly comprises flame heating, heating furnace heating and far infrared heating. And during preheating, a surface contact thermometer is adopted to measure the temperature within the range of 30-50 mm at two sides of the area to be welded.
And (3) carrying out butt girth welding on the carbon steel cylinder, wherein the welding process requires preheating before welding and heat preservation in the welding process. At present, carbon steel cylinders are preheated in enterprises mostly in a flame heating mode.
When the barrel is welded, the workpiece needs to rotate continuously along the circumferential direction to ensure the continuous welding of the welding line. The flame heating method is slow, heating is not uniform, and the temperature cannot be accurately controlled. The utility model is developed and designed to ensure that the temperature between the layers of the rotating welding seam meets the process requirement.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a non-contact induction heating preheating device, which is used for solving the problems in butt girth welding of the existing cylinder workpiece, replaces the traditional flame heating, can be adjusted in a lifting way according to the diameter of a welding seam and has multiple purposes; saves the heat treatment labor force and can realize automatic temperature control.
In order to solve the technical problem, the utility model is solved by the following technical scheme: a non-contact induction heating preheating device comprises a moving seat, wherein a lifting mechanism is arranged on the moving seat, a rotatable C-shaped induction heater is arranged on the lifting mechanism, and the C-shaped induction heater is used for preheating a workpiece to be welded and performing heat preservation after welding; the C-shaped induction heater comprises a plurality of groups of frameworks and induction coils erected on the frameworks, the frameworks are sequentially and rotatably connected together to form a C-shaped appearance, and the frameworks are covered on the surface of a barrel workpiece.
Among the above-mentioned technical scheme, the skeleton uses the steel structure support as the main part, lays insulating epoxy board outside the steel structure support.
In the technical scheme, the framework is provided with the auxiliary roller, and the framework is pressed on the outer surface of the workpiece to be welded by the auxiliary roller so as to reduce the action of friction force.
In the technical scheme, the lifting mechanism comprises a vertically arranged piston cylinder connected with a hydraulic system, the piston cylinder drives a piston rod to extend and retract, and a mounting support is arranged at the top end of the piston rod and used for connecting and mounting the C-shaped induction heater.
In the technical scheme, the mounting bracket is provided with the inductor bracket, the inductor bracket is arranged on the rotatable movable connector, and the movable connector is fixedly provided with the C-shaped induction heater.
In the above technical solution, the movable base is further provided with an electrical control part, and the electrical control part controls the hydraulic system and the C-type induction heater to work.
In the technical scheme, a fixed base used for temporarily placing a workpiece to be welded is arranged on the side edge of the moving seat, two spaced roller supports are arranged on the fixed base, supporting rollers are arranged on the roller supports, and the supporting rollers are used for supporting the workpiece to be welded and providing a workpiece rolling function.
Among the above-mentioned technical scheme, gyro wheel support detachably installs on unable adjustment base to adjust the interval, be applicable to the work piece of waiting to weld of different diameters.
The utility model provides a technical scheme of a non-contact induction heating preheating device, which is used for solving the problems in butt girth welding of the existing cylinder workpiece, replacing the traditional flame heating, and realizing lifting adjustment according to the diameter of a welding seam, thereby achieving multiple purposes; saves the heat treatment labor force and can realize automatic temperature control.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be discussed below, it is obvious that the technical solutions described in conjunction with the drawings are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings can be obtained according to the embodiments shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the present invention in use.
In the figure: the device comprises a fixed base 1, a workpiece 10 to be welded, a roller support 11, a supporting roller 12, a moving seat 2, a piston cylinder 21, a piston rod 22, an electric control part 23, a mounting bracket 24, a C-shaped induction heater 3, an inductor bracket 31, a movable connector 32, a framework 33 and an auxiliary roller 34.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without the need for inventive work, are within the scope of the present invention.
The embodiment of the utility model provides a technical scheme of a non-contact induction heating preheating device, which ensures that the interlayer temperature is within the process requirement range in the welding process of a rotating welding seam and realizes automatic temperature measurement monitoring.
As shown in fig. 1 to 2, a non-contact induction heating preheating device includes a moving seat 2, a lifting mechanism is disposed on the moving seat 2, a rotatable C-shaped induction heater 3 is disposed on the lifting mechanism, and the C-shaped induction heater 3 performs preheating and post-welding heat preservation work on a workpiece 10 to be welded; c type induction heater 3 includes a plurality of groups skeleton 33 and erects the induction coil on each skeleton, skeleton 33 rotates in proper order and links together and form C type appearance, and skeleton 33 lid is on barrel workpiece surface. The bottom of the movable seat 2 is provided with wheels, so that the position can be adjusted, and the movable seat is convenient to move and carry. And set up self-locking mechanism on the wheel, can lock the roll of wheel, just can avoid the condition that takes place unexpected removal at the during operation.
The workpiece covered by the C-shaped induction heater 3 is heated by utilizing the principle of electromagnetic induction heating, and the workpiece generates heat uniformly and stably. And when welding, generate heat and can go on in step, once accomplish the work of preheating and keeping warm after welding.
The integral framework of the C-shaped induction heater 3 is formed by connecting a plurality of frameworks 33, and each framework 33 is connected in a rotating connection mode, so that the curvature can be changed to adapt to workpieces with different sizes. The joints of the respective frames 33 can be tightened and loosened by bolts for adjustment. And then, an induction coil is arranged on each framework 33, and then, an infrared temperature measuring probe is arranged for detecting the temperature of the workpiece in real time and carrying out accurate fixed-point temperature control. Each infrared temperature measuring probe is matched with the electric control part 23 to accurately control the induction coil on each framework 33.
The framework 33 is mainly made of a steel support, and an insulating epoxy plate is laid outside the steel support. The frame 33 is provided with an auxiliary roller 34, and the frame 33 is pressed against the outer surface of the workpiece 10 to be welded by the auxiliary roller 34 to reduce the effect of friction.
In order to adapt to workpieces with different sizes, the C-shaped induction heater 3 is set to be adjustable in curvature, and a lifting mechanism is arranged to change the vertical height of the C-shaped induction heater 3, so that the requirements are met. The lifting mechanism comprises a piston cylinder 21 which is vertically arranged and connected with a hydraulic system, the piston cylinder 21 drives a piston rod 22 to extend and retract, and a mounting bracket 24 is arranged at the top end of the piston rod 22 and used for connecting and mounting the C-shaped induction heater 3. An inductor bracket 31 is arranged on the mounting bracket 24, the inductor bracket 31 is arranged on a rotatable movable connector 32, and the C-shaped induction heater 3 is fixedly arranged on the movable connector 32. The orientation of the C-shaped induction heater 3 can be adjusted by the cooperation of the movable connector 32 and the inductor holder 31.
The movable base 2 is further provided with an electric control unit 23, and the electric control unit 23 controls the operation of the hydraulic system and the C-type induction heater 3. The side edge of the moving seat 2 is provided with a fixed base 1 for temporarily placing a workpiece 10 to be welded, two spaced roller supports 11 are arranged on the fixed base 1, supporting rollers 12 are arranged on the roller supports 11, and the supporting rollers 12 are used for supporting the workpiece 10 to be welded and providing a workpiece rolling function. The roller bearing 11 is detachably mounted on the stationary base 1 to adjust the interval suitable for workpieces 10 to be welded of different diameters.
The utility model utilizes the characteristics of the induction heating technology to realize non-contact heating, can still ensure that the temperature of a welding seam is within the process requirement range in the continuous rotation welding process of the welding seam, and is provided with a far infrared temperature measuring instrument at an inlet and an outlet to monitor the temperature of the welding seam in real time and feed back the temperature to an induction heating control system in time to regulate the output power in real time, thereby ensuring the stability and uniformity of the temperature.
The utility model ensures that the welding temperature is in the process requirement range during the continuous rotation of the welding line.
The key technology of the utility model is to realize automatic temperature control between welding layers by adopting an induction heating technology and a far infrared temperature measurement technology.
According to the heating requirements of enterprises, the system configuration of the utility model comprises an electromagnetic induction heating power supply, a simple side heating C-shaped inductor tooling vehicle, a 3000 x 600mm C-shaped inductor and a far infrared thermometer. Moreover, workpieces to be welded of each enterprise are different, and the pre-welding preheating requirement is different, so that the configured machine can be selected and changed automatically.
The power required by the electromagnetic induction heating power supply is more than 60KW, and at least two temperature measuring points can be provided. For convenience of use, a touch screen is required to be provided for operation and display.
The arc length of the C-shaped inductor is 2-3 meters, the diameter of the arc can meet the heating requirement of a workpiece with the length of 3-5 meters, and the width is 500-600 mm.
The infrared thermometer is online and has a linkage feedback function with the heater.
The scheme of the utility model is used for replacing the traditional flame heating, is safer and more efficient, and achieves the target value that the energy utilization rate is improved by more than 70%. The utility model can carry out lifting adjustment according to the diameter of the welding seam, and realizes interlayer temperature control during automatic welding of the welding seam with the diameter of 2m-4 m. The utility model saves more than 50% of heat treatment labor force and realizes automatic temperature control.
The utility model aims to solve the problem of interlayer temperature control during automatic welding of circular seams. By utilizing the principle of induction heating, eddy current is formed on the surface of the workpiece, so that the workpiece can generate heat, and the temperature of the workpiece can be ensured to be within the process requirement range while the workpiece rotates. In order to achieve automatic temperature control, far infrared thermometers are respectively installed at an inlet point and an outlet point of a tool, the output power of equipment is adjusted in real time by using the feedback temperature of the far infrared thermometers, the interlayer temperature is guaranteed to be within a relatively stable range, the welding quality is effectively improved, and the subsequent welding problem is avoided. The induction heating technology is used for replacing the original flame heating and electric heating to control the interlayer temperature, so that the non-contact heating is realized, and the energy and labor are saved. The additionally arranged far infrared thermometer ensures real-time temperature acquisition and feedback regulation, and furthest ensures that the welding temperature is in the process requirement range when the welding seam is automatically welded.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the utility model is indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A non-contact induction heating preheating device is characterized in that: the welding device comprises a moving seat (2), wherein a lifting mechanism is arranged on the moving seat (2), a rotatable C-shaped induction heater (3) is arranged on the lifting mechanism, and the C-shaped induction heater (3) is used for preheating a workpiece (10) to be welded and performing heat preservation after welding; c type induction heater (3) include a plurality of group's skeleton (33) and erect the induction coil on each skeleton, skeleton (33) rotate in proper order and link together and form C type appearance, and skeleton (33) lid is on barrel workpiece surface.
2. A non-contact induction heating preheating apparatus according to claim 1, characterized in that: the framework (33) takes a steel structure support as a main body, and an insulating epoxy plate is paved outside the steel structure support.
3. A non-contact induction heating preheating apparatus according to claim 2, characterized in that: the framework (33) is provided with an auxiliary roller (34), and the framework (33) is pressed on the outer surface of the workpiece (10) to be welded by the auxiliary roller (34) so as to reduce the action of friction force.
4. A non-contact induction heating preheating apparatus according to claim 1, characterized in that: the lifting mechanism comprises a piston cylinder (21) which is vertically arranged and connected with a hydraulic system, the piston cylinder (21) drives a piston rod (22) to extend out and retract, and a mounting bracket (24) is arranged at the top end of the piston rod (22) and used for connecting and mounting the C-shaped induction heater (3).
5. A non-contact induction heating preheating apparatus according to claim 4, characterized in that: be provided with inductor support (31) on installing support (24), inductor support (31) set up in rotatable floating joint head (32), floating joint head (32) are fixed to be provided with C type induction heater (3).
6. A non-contact induction heating preheating apparatus according to claim 4, characterized in that: an electric control part (23) is further arranged on the movable seat (2), and the electric control part (23) controls the hydraulic system and the C-shaped induction heater (3) to work.
7. A non-contact induction heating preheating apparatus according to claim 1, characterized in that: the side edge of the moving seat (2) is provided with a fixed base (1) used for temporarily placing a workpiece (10) to be welded, two spaced roller supports (11) are arranged on the fixed base (1), supporting rollers (12) are arranged on the roller supports (11), and the supporting rollers (12) are used for supporting the workpiece (10) to be welded and providing a workpiece rolling function.
8. A non-contact induction heating preheating apparatus according to claim 7, characterized in that: the roller support (11) is detachably arranged on the fixed base (1) so as to adjust the distance, and is suitable for workpieces (10) to be welded with different diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120628463.8U CN216391460U (en) | 2021-03-29 | 2021-03-29 | Non-contact induction heating preheating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120628463.8U CN216391460U (en) | 2021-03-29 | 2021-03-29 | Non-contact induction heating preheating device |
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| CN216391460U true CN216391460U (en) | 2022-04-26 |
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| CN202120628463.8U Active CN216391460U (en) | 2021-03-29 | 2021-03-29 | Non-contact induction heating preheating device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888418A (en) * | 2022-05-18 | 2022-08-12 | 南京航空航天大学 | Coil self-adaption based induction welding method and device for complex curvature plate |
| CN115780960A (en) * | 2023-02-09 | 2023-03-14 | 二重(镇江)重型装备有限责任公司 | Large-scale rotating workpiece surfacing preheating device |
-
2021
- 2021-03-29 CN CN202120628463.8U patent/CN216391460U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888418A (en) * | 2022-05-18 | 2022-08-12 | 南京航空航天大学 | Coil self-adaption based induction welding method and device for complex curvature plate |
| CN115780960A (en) * | 2023-02-09 | 2023-03-14 | 二重(镇江)重型装备有限责任公司 | Large-scale rotating workpiece surfacing preheating device |
| CN115780960B (en) * | 2023-02-09 | 2023-04-07 | 二重(镇江)重型装备有限责任公司 | Large-scale rotating workpiece surfacing preheating device |
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