CN110699630B - Induction heating device and process for spraying welding layer alloy on surface of membrane type wall tube bank - Google Patents
Induction heating device and process for spraying welding layer alloy on surface of membrane type wall tube bank Download PDFInfo
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- CN110699630B CN110699630B CN201910999300.8A CN201910999300A CN110699630B CN 110699630 B CN110699630 B CN 110699630B CN 201910999300 A CN201910999300 A CN 201910999300A CN 110699630 B CN110699630 B CN 110699630B
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- 230000006698 induction Effects 0.000 title claims abstract description 121
- 238000010438 heat treatment Methods 0.000 title claims abstract description 108
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 53
- 239000000956 alloy Substances 0.000 title claims abstract description 53
- 238000003466 welding Methods 0.000 title claims abstract description 45
- 239000012528 membrane Substances 0.000 title claims abstract description 42
- 238000005507 spraying Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008569 process Effects 0.000 title claims abstract description 11
- 238000004321 preservation Methods 0.000 claims abstract description 28
- 238000002844 melting Methods 0.000 claims description 21
- 230000008018 melting Effects 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 23
- 239000011248 coating agent Substances 0.000 abstract description 13
- 238000000576 coating method Methods 0.000 abstract description 13
- 239000011159 matrix material Substances 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010791 domestic waste Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- HYJODZUSLXOFNC-UHFFFAOYSA-N [S].[Cl] Chemical compound [S].[Cl] HYJODZUSLXOFNC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
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- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses an induction heating device and a process for spraying welding layer alloy on the surface of a film type wall tube row, wherein the induction heating device comprises a tube row walking support bench which can support the film type wall tube row; the tube bank walking support body is arranged on the tube bank walking support bench and can drive the film type wall tube bank to move on the tube bank walking support bench; the tube bank heating induction coil is arranged above the top of the tube bank walking support bench; and the heat preservation cover can be detachably covered on the membrane type wall tube row. Compared with the prior art, the invention can ensure that the surface coating alloy and the film type wall tube row matrix are metallurgically combined, so that the whole film type wall tube row is heated more uniformly, the production efficiency is improved, and the invention is suitable for mass production.
Description
Technical Field
The invention relates to the field of heat treatment of membrane type wall tube rows, in particular to an induction heating device and an induction heating process for spraying welding layer alloy on the surface of a membrane type wall tube row.
Background
Along with the rapid development of urban treatment and continuous expansion of towns, the production of industrial waste and household waste also increases sharply, the treatment and disposal of the industrial waste and the household waste become a great problem related to the sustainable development of urban civilization, and the waste incineration power generation technology can realize the harmless, volume-reducing, stabilizing and recycling of the waste to the greatest extent and promote the healthy civilization development of urban treatment and disposal, so that the technology is attracting attention. In practical engineering application of waste incineration power generation, the membrane type wall tube bank is an important heat exchange component (heat exchanger), and the heating surface of the membrane type wall tube bank is often corroded by high-temperature chlorine-sulfur-containing atmosphere and molten salt thereof during operation, so that a high-temperature corrosion-resistant coating is often adopted on the heating surface of the membrane type wall tube bank to prolong the service life of the membrane type wall tube bank, but the surface coating of the membrane type wall tube bank is extremely easy to be heated unevenly during production, so that quality problems are generated, correspondingly, the production efficiency is reduced, and the industrial production requirement cannot be met.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an induction heating device and an induction heating process for spraying welding layer alloy on the surface of a film type wall tube row, which can enable the surface coating alloy to be metallurgically combined with a film type wall tube row matrix, enable the whole film type wall tube row to be heated more uniformly, improve the production efficiency and be suitable for mass production.
In order to make up the deficiency of the prior art, the technical scheme adopted by the embodiment of the invention is as follows:
An induction heating device for spraying a welding layer alloy on the surface of a film type wall tube bank, comprising:
The tube bank walking support rack can support the film type wall tube bank;
the tube bank walking support body is arranged on the tube bank walking support bench and can drive the film type wall tube bank to move on the tube bank walking support bench; and
The tube bank heating induction coil is arranged above the top of the tube bank walking support bench;
and the heat preservation cover can be detachably covered on the membrane type wall tube row.
Further, this technical scheme still includes induction heating power, set up in the side of bank of tubes walking supporting bench can be for bank of tubes heating induction coil provides voltage.
Further, the technical scheme also comprises rolling bearings, and two side walls of the tube bank walking support rack are connected through the rolling bearings.
Further, the pipe row walking support body comprises a conveying belt and a duplex gear, wherein the duplex gear is arranged at one end of the rolling bearing, and the conveying belt is connected with the duplex gear in a matched mode.
Further, the heat preservation cover adopts a cuboid structure.
Further, the length of the heat preservation cover is 2000-20000mm, the width of the heat preservation cover is 30-200mm, and the distance between the top of the inner cavity and the upper surface of the membrane type wall tube row is 150-1000mm.
Further, the tube bank heating induction coils are provided with more than two, and the distance between the adjacent tube bank heating induction coils is 200-1000mm.
A process of an induction heating device for spraying welding layer alloy on the surface of a film type wall tube bank comprises the following steps:
placing the film type wall tube row on the tube row walking support rack, and starting the tube row walking support body and the tube row heating induction coil;
when the temperature T of the membrane type wall tube row meets the following conditions: the melting point T of the film type wall tube bank surface welding layer alloy is less than or equal to T and less than or equal to +100 ℃ of the film type wall tube bank surface welding layer alloy, and the tube bank walking support and the tube bank heating induction coil are closed;
Covering the heat preservation cover on the membrane type wall tube row until the temperature state of the membrane type wall tube row is cooled to a room temperature state.
Further, the membrane type wall tube bank is placed on the tube bank walking support rack, the tube bank walking support body and the tube bank heating induction coil are started, and the membrane type wall tube bank heating induction coil comprises the following steps:
Placing the film type wall pipe row on the pipe row walking support rack, if the number of the pipe row heating induction coils is set to be one, preheating the film type wall pipe row, and then starting the pipe row walking support body and the pipe row heating induction coils; if the number of the tube bank heating induction coils is more than two, the tube bank walking support body and the tube bank heating induction coils are directly started.
One or more technical solutions provided in the embodiments of the present invention have at least the following beneficial effects: the tube bank walking support rack is used for supporting the film type wall tube bank, provides a good production environment for the film type wall tube bank, drives the film type wall tube bank to move on the tube bank walking support rack through the tube bank walking support body, and in the process, the film type wall tube bank is heated by utilizing induction between the tube bank heating induction coil and the film type wall tube bank, and compared with a mode of directly adopting a heat source to heat in the prior art, induction heating relies on the cooperation between the film type wall tube bank and the film type wall tube bank, so that the surface coating of the film type wall tube bank is heated appropriately more easily, and the coating and a film type wall tube bank matrix are metallurgically bonded; and after induction heating, the heat preservation cover is further arranged, so that heat can be maintained for a short time, metallurgical bonding between the surface coating alloy and the film type wall tube bank matrix at the temperature can be promoted, and the production quality of the film type wall tube bank is improved. Therefore, the invention can make the surface coating alloy and the film type wall tube row matrix achieve metallurgical bonding, so that the whole film type wall tube row is heated more uniformly, the production efficiency is improved, and the invention is suitable for mass production.
Drawings
Preferred examples of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an induction heating apparatus for spraying a weld layer alloy on the surface of a film-type wall tube bank according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the portion A of FIG. 1;
FIG. 3 is a schematic process flow diagram of an induction heating apparatus for welding layer alloy sprayed on the surface of a film-type wall tube row according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that, if not in conflict, the features of the embodiments of the present invention may be combined with each other, which is within the protection scope of the present invention. In addition, while a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different than in the flowchart.
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides an induction heating apparatus for spraying a welding layer alloy on a surface of a film type wall tube row, including:
The tube row walking support rack 100 can support a film type wall tube row 110;
A tube row travel support 120 provided on the tube row travel support frame 100 and configured to drive the membrane wall tube row 110 to travel on the tube row travel support frame 100; and
A tube bank heating induction coil 130 disposed above the top of the tube bank traveling support rack 100;
and a heat-insulating cover 140 detachably covering the membrane-type wall tube row 110.
In this embodiment, the tube bank walking support stand 100 is used for supporting the membrane wall tube bank 110, providing a good production environment for the tube bank, and driving the membrane wall tube bank 110 to travel on the tube bank walking support stand 100 through the tube bank walking support body 120, in this process, heating the membrane wall tube bank 110 by using induction between the tube bank heating induction coil 130 and the membrane wall tube bank 110, and compared with the conventional method of directly adopting a heat source heating mode, the induction heating relies on the cooperation with the membrane wall tube bank 110, so that the surface coating of the membrane wall tube bank 110 is more easily heated, thereby the metallurgical combination of the coating and the matrix of the membrane wall tube bank 110 is achieved; further, after induction heating, the heat-insulating cover 140 is further provided, so that heat can be maintained for a short time, and metallurgical bonding between the surface coating alloy and the matrix of the film-type wall tube row 110 at the temperature can be promoted, thereby improving the production quality of the film-type wall tube row 110.
Therefore, the invention can make the surface coating alloy and the matrix of the membrane type wall tube row 110 achieve metallurgical bonding, so that the whole membrane type wall tube row 110 is heated more uniformly, the production efficiency is improved, and the invention is suitable for mass production.
Further, referring to fig. 1, another embodiment of the present invention further provides an induction heating apparatus for spraying a welding layer alloy on the surface of a film-type wall tube bank, which further includes an induction heating power supply 150 disposed beside the tube bank walking support rack 100, and capable of providing a voltage to the tube bank heating induction coil 130.
In this embodiment, the induction heating power supply 150 may directly adopt a commercial power, a battery power, etc., and the induction heating power supply 150 is disposed beside the tube bank walking support stand 100, which has the following advantages: the whole heating device is convenient to realize compact and small, the occupied area is smaller, the control and troubleshooting are easier for staff, the electric energy conveying distance is shortened, and the electric consumption is reduced.
Further, referring to fig. 1 and 2, another embodiment of the present invention further provides an induction heating apparatus for spraying a welding layer alloy on the surface of a film type wall tube bank, wherein the induction heating apparatus further comprises rolling bearings 160, and two side walls of the tube bank walking support stand 100 are connected through the rolling bearings 160. In the present embodiment, the number of the rolling bearings 160 is not limited, and a plurality of rolling bearings may be provided and each of which is connected to both side walls of the tube bank traveling support stand 100; the roller bearing 160 can fix the tube bank walking support rack 100, and has good fixing and connecting functions.
Further, referring to fig. 2, another embodiment of the present invention further provides an induction heating apparatus for spraying a welding layer alloy on a surface of a film type wall tube row, where the tube row walking support 120 includes a conveyor belt 1201 and a duplex gear 1202, the duplex gear 1202 is disposed on one end of the rolling bearing 160, and the conveyor belt 1201 is cooperatively connected with the duplex gear 1202.
In this embodiment, the duplex gear 1202 rotates under the conveyor belt 1201, and compared with the single-shaft gear, the duplex gear 1202 can provide a more stable driving force, so as to drive the rolling bearing 160 connected with the duplex gear to rotate, and because the rolling bearing 160 is connected with the tube bank walking support bench 100 and the film type wall tube bank 110 is arranged on the tube bank walking support bench 100, the rotation of the rolling bearing 160 can drive the film type wall tube bank 110 to perform transmission running, thereby playing a good role in transmission; preferably, the transmission belt 1201 and the rolling bearing 160 are perpendicular to each other, so that the driving effect is better.
Further, another embodiment of the present invention further provides an induction heating apparatus for spraying a welding layer alloy on the surface of the film-type wall tube row, wherein the heat insulation cover 140 adopts a cuboid structure. In the present embodiment, the insulation cover 140 in this configuration can be more preferably matched with the membrane wall tube array 110 and the tube array walking support stand 100 for industrialization, and is convenient to manufacture.
Further, another embodiment of the present invention further provides an induction heating apparatus for spraying a welding layer alloy on the surface of the membrane type wall tube row, wherein the length of the heat insulation cover 140 is 2000-20000mm, the width is 30-200mm, and the distance between the top of the inner cavity and the upper surface of the membrane type wall tube row 110 is 150-1000mm. In this embodiment, the above parameters are summarized by a lot of experiments by the inventor, and the cost of the insulation cover 140 set in this range is relatively low, and the distance from the membrane wall tube row 110 is relatively moderate, so that the situation that the insulation effect is compromised due to too far distance does not occur.
Further, another embodiment of the present invention further provides an induction heating device for spraying a welding layer alloy on the surface of a film type wall tube bank, wherein the tube bank heating induction coils 130 are provided with more than two, and the distance between adjacent tube bank heating induction coils 130 is 200-1000mm. In this embodiment, the distance between the heating induction coils 130 of the tube array is too short, which may cause mutual interference between the coils, and too far may cause that the film-type wall tube array 110 cannot be heated in one section of conveying, so as to affect the production effect.
Referring to fig. 3, another embodiment of the present invention further provides a process for an induction heating apparatus for spraying a weld layer alloy on a surface of a film-type wall tube row, comprising the steps of:
s100, placing the film type wall pipe row 110 on the pipe row walking support bench 100, and starting the pipe row walking support 120 and the pipe row heating induction coil 130;
S200, when the temperature T of the film type wall tube row 110 meets the following conditions: when the melting point T of the alloy of the surface welding layer of the membrane type wall tube row 110 is less than or equal to the melting point +100 ℃ of the alloy of the surface welding layer of the membrane type wall tube row 110, closing the tube row walking support 120 and the tube row heating induction coil 130;
And S300, covering the heat preservation cover 140 on the membrane type wall tube row 110 until the temperature state of the membrane type wall tube row 110 is cooled to a room temperature state.
In this embodiment, when the heating temperature is near the melting point of the alloy of the solder layer sprayed on the surface of the film type wall tube row 110 and at least reaches the melting point, the surface coating of the film type wall tube row 110 starts to change in state, under this condition, metallurgical cooperation is more easily performed with the substrate of the film type wall tube row 110, so as to produce the film type wall tube row 110 meeting the requirement, and the physical state of the film type wall tube row 110 can be further stabilized by the heat insulation cover 140 until the film type wall tube row 110 is cooled to the room temperature, so that the complete film type wall tube row 110 product can be obtained, wherein the room temperature refers to the room temperature of 25 ℃; the tube bank walking support 120 and the tube bank heating induction coil 130 are started to maintain the production process, whereas the tube bank walking support 120 and the tube bank heating induction coil 130 are closed to halt the production process, so that the control is convenient.
Specifically, the working manner of the embodiment may be, in addition to the above manner:
1. two tube rows are arranged for heating the induction coils 130, the film type wall tube row 110 is firstly heated by the first induction coil, the heating temperature is firstly 300 ℃ less than or equal to T less than or equal to 500 ℃, secondly 500 ℃ less than or equal to 700 ℃, thirdly 700 ℃ less than or equal to T less than or equal to 900 ℃, after the film type wall tube row 110 is heated by the first induction coil, the film type wall tube row 110 passes through the middle non-induction coil section (namely the heat preservation section) and is then heated to the range from the melting point temperature of the spray welding layer alloy to the melting point temperature of +100 ℃ of the spray welding layer alloy by the second induction coil, and after the film type wall tube row 110 comes out from the second induction coil, the film type wall tube row 110 enters the heat preservation cover 140 for heat preservation and is slowly cooled to the room temperature state.
2. Setting three tube rows to heat the induction coil 130, wherein the film type wall tube row 110 is firstly heated by the first induction coil, the heating temperature is firstly 300 ℃ less than or equal to T less than or equal to 500 ℃, secondly 500 ℃ less than or equal to 700 ℃, secondly 700 ℃ less than or equal to T less than or equal to 900 ℃, after the film type wall tube row 110 is heated by the first induction coil, the film type wall tube row 110 passes through a middle non-induction coil section (namely a heat preservation section), is then heated to 900 ℃ less than the T less than the melting point of the welding layer alloy on the surface of the film type wall tube row 110 by the second induction coil, after the film type wall tube row 110 comes out of the second induction coil, the film type wall tube row 110 is heated to the melting point of the welding layer alloy to the range of +100 ℃ from the third induction coil, and after the film type wall tube row 110 comes out of the third induction coil, the film type wall tube row 110 enters into the heat preservation cover 140 to be preserved and slowly cooled to the room temperature state;
3. Four tube bank heating induction coils 130 are arranged, the film type wall tube bank 110 is firstly heated to 300 ℃ to less than or equal to 500 ℃ by a first induction coil, then is heated to 500 ℃ to less than or equal to 700 ℃ by a second induction coil through an intermediate heat preservation section, is then heated to 900 ℃ to less than T to less than the melting point of the alloy of the spray welding layer on the surface of the film type wall tube bank 110 by a third induction coil through an intermediate heat preservation section, is finally heated to the range from the melting point temperature of the alloy of the spray welding layer to +100 ℃, and is finally heated to the melting point temperature of the alloy of the spray welding layer by a fourth induction coil, and after coming out from the fourth induction coil, the film type wall tube bank 110 enters into a heat preservation cover 140 for heat preservation and is slowly cooled to a room temperature state;
4. Five tube rows are arranged for heating the induction coils 130, the film type wall tube row 110 is firstly heated to 300 ℃ to less than or equal to T to less than or equal to 500 ℃ by a first induction coil, then is heated to 500 ℃ to less than or equal to 700 ℃ by a second induction coil through an intermediate heat preservation section, then is heated to 700 ℃ to less than or equal to 900 ℃ by a third induction coil through an intermediate heat preservation section, is heated to 900 ℃ to less than or equal to T to less than or equal to 900 ℃ by a fourth induction coil through an intermediate heat preservation section, is heated to the melting point of the welding layer alloy on the surface of the film type wall tube row 110 through an intermediate heat preservation section, is finally heated to the melting point temperature of the welding layer alloy to the range of +100 ℃ by a fifth induction coil after being discharged from the fifth induction coil, and enters the heat preservation cover 140 for heat preservation and slow cooling to the room temperature state.
From the above working modes, the staff can set the number of the heating induction coils 130 of the tube bank at will, as long as the melting point temperature condition range of the alloy of the welding layer sprayed on the surface of the film type wall tube bank 110 is finally satisfied, therefore, the production modes are various, and the production is more convenient.
Further, another embodiment of the present invention provides a process for an induction heating apparatus for spraying a welding layer alloy on a surface of a film type wall tube row, wherein in the step S100, the film type wall tube row 110 is placed on the tube row walking support stand 100, and the tube row walking support 120 and the tube row heating induction coil 130 are started, including the following steps:
placing the membrane wall tube bank 110 on the tube bank walking support stand 100, if the number of the tube bank heating induction coils 130 is set to one, preheating the membrane wall tube bank 110, and then restarting the tube bank walking support 120 and the tube bank heating induction coils 130; if the number of the tube array heating induction coils 130 is set to two or more, the tube array traveling support 120 and the tube array heating induction coils 130 are directly activated.
In the present embodiment, by distinguishing the different numbers of the heating induction coils 130 in the tube banks, the preheating state of the film wall tube banks 110 is correspondingly controlled, so that the production efficiency and the production quality can be improved; preheating of the welding material is a common technique in the art and will not be described in detail herein.
While the preferred embodiments and concepts of the invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the foregoing embodiments, and that various equivalent modifications and substitutions may be made without departing from the spirit of the invention, and these equivalent modifications and substitutions are intended to be within the scope of the invention as set forth in the appended claims.
Claims (7)
1. An induction heating device for spraying a welding layer alloy on the surface of a film type wall tube bank, which is characterized by comprising:
The tube bank walking support rack can support the film type wall tube bank;
the tube bank walking support body is arranged on the tube bank walking support bench and can drive the film type wall tube bank to move on the tube bank walking support bench; and
The tube bank heating induction coil is arranged above the top of the tube bank walking support bench;
the heat preservation cover can be detachably covered on the membrane type wall tube row;
The induction heating power supply is arranged at the side of the tube bank walking support rack and can provide voltage for the tube bank heating induction coil;
the number of the tube bank heating induction coils is three, the distance between the adjacent tube bank heating induction coils is 200-1000mm, the heating temperature of the tube bank heating induction coils is sequentially increased along the transmission direction of the tube bank walking support rack, the temperature of the film type wall tube bank is T, wherein the film type wall tube bank is heated to 300 ℃ or more and less than 900 ℃ by the first tube bank heating induction coil, the film type wall tube bank is heated to 900 ℃ or less and less than T by the last tube bank heating induction coil, the film type wall tube bank is heated to the melting point temperature of the welding layer alloy within the range of +100 ℃,
Or alternatively
The number of the tube bank heating induction coils is four, the distance between the adjacent tube bank heating induction coils is 200-1000mm, the heating temperature of the tube bank heating induction coils is sequentially increased along the transmission direction of the tube bank walking support rack, the temperature of the film type wall tube bank is T, wherein the film type wall tube bank is heated to be 300 ℃ to be less than or equal to 500 ℃ by the first tube bank heating induction coil, the film type wall tube bank is heated to be 500 ℃ to be less than or equal to 700 ℃ by the second tube bank heating induction coil, the film type wall tube bank is heated to be 900 ℃ to be less than T to be within the range of the melting point of the welding layer alloy sprayed on the surface of the film type wall tube bank by the last tube bank heating induction coil, the film type wall tube bank is heated to be within the range of the melting point temperature of the welding layer alloy sprayed on the surface of the welding layer alloy to be +100 ℃,
Or alternatively
The heating temperature of the tube bank heating induction coils is increased along the transmission direction of the tube bank walking support rack, the temperature of the film type wall tube bank is T, wherein the temperature of the film type wall tube bank is heated to be 300 ℃ less than or equal to 500 ℃ by the first tube bank heating induction coil, the temperature of the film type wall tube bank is heated to be 500 ℃ less than or equal to 700 ℃ by the second tube bank heating induction coil, the temperature of the film type wall tube bank is heated to be 700 ℃ less than or equal to 900 ℃ by the third tube bank heating induction coil, the heating temperature of the film type wall tube bank by the last tube bank heating induction coil is 900 ℃ less than T less than the range of the melting point of the spray welding layer alloy on the surface of the film type wall tube bank, and the temperature of the film type wall tube bank is heated by the last tube bank heating induction coil to be within the range of the melting point temperature of the spray welding layer alloy to be +100 ℃.
2. An induction heating apparatus for welding layer alloy sprayed on the surface of a film type wall tube row according to claim 1, wherein: the pipe row walking support rack is characterized by further comprising rolling bearings, and two side walls of the pipe row walking support rack are connected through the rolling bearings.
3. An induction heating apparatus for welding layer alloy sprayed on the surface of a film type wall tube row according to claim 2, wherein: the pipe row walking support body comprises a conveying belt and a duplex gear, wherein the duplex gear is arranged at one end of the rolling bearing, and the conveying belt is connected with the duplex gear in a matched mode.
4. An induction heating apparatus for welding layer alloy sprayed on the surface of a film type wall tube row according to claim 1, wherein: the heat preservation cover adopts a cuboid structure.
5. An induction heating apparatus for welding layer alloy sprayed on the surface of a film type wall tube row according to claim 4, wherein: the length of the heat preservation cover is 2000-20000mm, the width of the heat preservation cover is 30-200mm, and the distance between the top of the inner cavity and the upper surface of the membrane type wall tube row is 150-1000mm.
6. A process for an induction heating apparatus for welding a layer alloy to a surface of a film wall tube array as set forth in claim 1, comprising the steps of:
placing the film type wall tube row on the tube row walking support rack, and starting the tube row walking support body and the tube row heating induction coil;
when the temperature T of the membrane type wall tube row meets the following conditions: the melting point T of the film type wall tube bank surface welding layer alloy is less than or equal to T and less than or equal to +100 ℃ of the film type wall tube bank surface welding layer alloy, and the tube bank walking support and the tube bank heating induction coil are closed;
Covering the heat preservation cover on the membrane type wall tube row until the temperature state of the membrane type wall tube row is cooled to a room temperature state.
7. The process of claim 6, wherein said placing said film wall tube on said tube bank traveling support rack, activating said tube bank traveling support and said tube bank heating induction coil, comprises the steps of:
And placing the film type wall tube bank on the tube bank walking support rack, and directly starting the tube bank walking support body and the tube bank heating induction coils if the number of the tube bank heating induction coils is three, four or five.
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