CN113699351B - Online destressing treatment device and process for large-caliber composite pipe - Google Patents
Online destressing treatment device and process for large-caliber composite pipe Download PDFInfo
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- CN113699351B CN113699351B CN202111090740.5A CN202111090740A CN113699351B CN 113699351 B CN113699351 B CN 113699351B CN 202111090740 A CN202111090740 A CN 202111090740A CN 113699351 B CN113699351 B CN 113699351B
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- 239000002131 composite material Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 103
- 230000006698 induction Effects 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims description 30
- 238000000137 annealing Methods 0.000 claims description 15
- 238000009529 body temperature measurement Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims 3
- 230000007547 defect Effects 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000004429 Calibre Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
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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
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- 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
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- 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
-
- 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
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- 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)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Heat Treatment Of Articles (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses an on-line destressing treatment device for a large-caliber composite pipe and a process thereof, wherein the device consists of an induction heating component, an inner temperature measuring component, an outer temperature control component, a carrier roller component and a cross roller straightening component, the induction heating component comprises a middle-low frequency heating module and a super-audio heating module, the outer temperature control component comprises a temperature measuring module and a temperature control module, a group of cross roller straightening components are respectively arranged at the head end and the tail end of the composite pipe in an integral layout, three groups of low-frequency, middle-frequency and low-frequency induction heating devices, a super-audio heating module induction heating device and the outer temperature control component matched with each induction heating device are sequentially arranged between the two groups of cross roller straightening components, the inner temperature measuring component is arranged at the tail end of the composite pipe, and the composite pipe moves forwards along the axis of the carrier roller component and the cross roller straightening component. The invention utilizes and controls the temperature gradient formed by induction heating, and effectively solves the heat treatment defect caused by the stress relief treatment temperature difference of the composite pipe base layer and the composite material.
Description
Technical Field
The invention relates to the field of composite pipes, in particular to an on-line destressing treatment device and process for a large-caliber composite pipe.
Background
The bimetal composite pipe is formed by compounding two metal materials (a base layer and a multi-layer) with different performance characteristics through a specific process (centrifugal casting, drawing, special welding and the like), so that the advantages and the disadvantages are overcome, and the composite pipe has the advantages of base metal and multi-layer metal, therefore, compared with a single material pipe, the composite pipe has the advantages of low cost and high comprehensive performance, and is widely applied to various fields of petroleum, chemical industry, metallurgy, food, building and the like. The special process is that the composite pipe product needs to be annealed at low temperature to eliminate internal stress, but the chemical components of the base and the composite material are different, and the stress eliminating temperature range is different, so that the furnace type (uniform) heating is not suitable for the stress eliminating annealing treatment of the composite pipe, especially for the composite pipe with large caliber and thick wall.
Disclosure of Invention
The invention aims to overcome at least one defect of the prior art, and provides an on-line destressing treatment device and a process thereof for a large-caliber composite pipe, wherein the temperature gradient formed by induction heating is utilized, and the temperature of key parts of the composite pipe in the induction heating and heat transfer processes is controlled, so that the temperature of an inner metal layer and an outer metal layer are in the temperature range of respective destressing treatment, and the inner metal layer and the outer metal layer have good mechanical properties.
The aim of the invention is achieved by the following technical scheme: the utility model provides a heavy-calibre composite pipe on-line destressing processing apparatus, its mainly includes composite pipe, induction heating subassembly, interior temperature measurement subassembly, outer temperature control subassembly, bearing roller subassembly and cross roller straightening subassembly, composite pipe head and tail both ends respectively are equipped with a set of cross roller straightening subassembly, two sets of install between the cross roller straightening subassembly induction heating subassembly with the bearing roller subassembly, follow the composite pipe axis direction is from front to back, induction heating subassembly comprises well low frequency heating module and super audio heating module two parts, well low frequency heating module with the super audio heating module comprises induction heating device, induction heating device all forms with being equipped with outer temperature control subassembly, the composite pipe afterbody is provided with interior temperature measurement subassembly, cross roller straightening subassembly with the drive of composite pipe is according to the forward motion of established speed.
Preferably, the low-frequency heating module comprises three groups of induction heating devices, the low frequency (50 hz-1 khz), the intermediate frequency (1 khz-20 khz) and the low frequency (50 hz-1 khz) are sequentially arranged along the axial direction of the composite tube from front to back, and the ultrasonic frequency heating module only comprises one group of induction heating devices, and the frequency is set to be ultrasonic frequency (20 khz-40 khz).
Preferably, the induction heating device comprises a transformer, a wiring board, a motor, a gear, a sliding table, a rack, a heavy-duty guide rail, an inductor and a water through pipe, wherein the heavy-duty guide rail is installed on a foundation, the heavy-duty guide rail is slidably installed on the sliding table, the upper end of the sliding table is fixedly provided with the transformer, the side end of the transformer is provided with the wiring board, the inductor is fixedly installed on the wiring board, the inductor is provided with a water inlet and a water outlet and is communicated with a cooling system through the water through pipe, the rack is fixedly arranged on the side of the heavy-duty guide rail, the side end, close to the rack, of the sliding table is provided with the motor, an output shaft of the motor is provided with the gear, the gear is meshed with the rack, and the induction heating device can adjust the position along the axis direction of the composite pipe by a short distance.
Preferably, the inner temperature measuring assembly mainly comprises a driving piece, a linear bearing, a squeeze roller, a cantilever rod and a first infrared camera, the bottom of the inner temperature measuring assembly is consistent with the bottom structure of the induction heating device, the inner temperature measuring assembly comprises a front-back position adjusting system composed of a sliding table, a motor, a gear, a rack and a heavy-duty guide rail, the driving piece is fixedly installed at the top of the sliding table, two pairs of squeeze rollers and the linear bearing are arranged at the top of the driving piece, a driving system for driving the squeeze roller is arranged in the driving piece, the axis of the linear bearing is collinear with the axis of the composite tube, the cantilever rod is coaxially installed on the cantilever rod, a mounting groove for circumferentially stopping and mounting the first infrared camera is formed in the cantilever rod, the cantilever rod can move along the axis of the cantilever rod under the action of the squeeze roller, four groups of the first infrared cameras are installed on the cantilever rod, and when the initial ends of the cantilever rod and the initial ends of the medium-low frequency heating module are aligned, the four groups of the infrared cameras are located at the inner position of the composite tube corresponding to the four groups of the induction heating device.
Preferably, the outer temperature control assembly comprises a temperature measurement module and a temperature control module, the temperature measurement module is composed of an XY support and a second infrared camera, the fixed end of the XY support is installed at the side end of the transformer, the second infrared camera is installed at the bottom of the lifting end of the XY support, the temperature control module comprises a telescopic piece, a magnetic conduction piece, a cooling piece, a pipe hoop, a cooling pipe and an L support, the fixed end of the L support is installed at the side end of the sliding table of the induction heating device, the magnetic conduction piece is installed at the top end of the L support, the magnetic conduction piece is connected with the cooling piece through two groups of telescopic pieces, and the input end of the cooling piece is connected with the cooling pipe through the pipe hoop.
Preferably, the magnetic conductive member is formed by a plurality of groups of arc-shaped magnetic conductive bodies in a circumferential array, the cooling member comprises two sections which can be independently controlled, each section is formed by a plurality of groups of strip-shaped nozzles in a circumferential array, the nozzles of the cooling member positioned at the inner section of the inductor are staggered with the corresponding magnetic conductive bodies in an array, and the nozzle array of the cooling member positioned at the outer section of the inductor is consistent with the array rule of the magnetic conductive bodies.
The invention also provides an online stress relief treatment process for the large-caliber composite pipe, which comprises the following steps of:
s1, determining the corresponding stress-relief heat treatment temperature of a composite pipe base layer and a composite material:
the composite pipe has composite layer of alloy A and base layer of alloy B in the stress eliminating annealing temperature range of T 1 ~T 2 The stress relief annealing temperature range of alloy B is T 3 ~T 4 Wherein T is 3 ＞T 1 ，T 4 ＞T 2 In addition, the mechanical property of the metal material after the stress relief annealing treatment can be detected by a tensile test or a hardness test;
s2, preliminarily determining technological parameters through a numerical simulation technology, and debugging:
s21, electromagnetic heating is carried out on the composite pipe by the medium-low frequency heating module;
s22, enabling the temperature of the outer surface of the base layer to be always lower than T through the outer temperature control assembly 4 ；
S23, heat is transferred to the composite layer through heat conduction, and the inner temperature measuring component monitors the temperature of the inner surface of the composite layer:
if the temperature of the inner surface of the multilayer is not reached (T 1 -40) to (T) 1 -20), repeating steps S21 to S23 if the temperature of the inner surface of the multilayer reaches (T 1 -40) to (T) 1 -20), step S24 is continued;
s24, electromagnetic heating is carried out on the composite pipe by the ultrasonic heating module;
s25, controlling the temperature of the outer surface of the base layer by the outer temperature control assembly, and monitoring the temperature of the inner surface of the composite layer by the inner temperature measurement assembly:
s251, if the temperature of the inner surface of the multi-layer does not reach T 1 Repeating steps S24-S251, if the temperature of the inner surface of the multi-layer reaches T 1 Then continue step S26;
s252, if the temperature of the outer surface of the base layer does not reach T 4 Repeating steps S24 to S252, if the temperature of the outer surface of the base layer reaches T 4 Then continue step S26;
s26, the composite pipe base layer and the composite layer meet the corresponding stress-relief heat treatment temperature requirements;
s3, carrying out hardness test on the composite pipe bonding layer subjected to stress-relief heat treatment:
if the hardness test of the composite pipe bonding layer meets the mechanical property requirement, continuing the step S4, otherwise, repeating the steps S2 to S3;
s4, determining technological parameters, formulating technological cards and putting into production.
Compared with the prior art, the invention has the following beneficial effects: the invention utilizes the arrangement and combination of low-frequency, medium-frequency and supersonic frequency induction heating devices and the temperature gradient formed by induction heating, and controls the temperature of the key parts of the composite pipe in the induction heating and heat transfer processes, so that the final heating temperature of the inner metal layer and the outer metal layer is in the temperature range of the stress relieving treatment respectively, thereby improving the quality of the low-temperature annealing heat treatment of the composite pipe and achieving the effect of eliminating the internal stress. The invention is suitable for the integral heat treatment of the large-caliber composite pipe, has the advantages of environmental protection, high production efficiency and the like compared with the traditional furnace heat treatment, and is beneficial to the high-quality development of the large-caliber composite pipe.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a workflow diagram of the present invention;
FIG. 2 is a schematic view of the apparatus of the present invention;
FIG. 3 is a schematic diagram of the induction heating apparatus of the present invention;
FIG. 4 is a schematic view of the structure of the outer temperature control assembly of the present invention;
FIG. 4a is a schematic diagram of the magnetic conductive member of the outer temperature control assembly according to the present invention;
FIG. 4b is a schematic diagram of the cooling member of the external temperature control assembly according to the present invention;
FIG. 5 is a schematic view of the inner temperature measuring assembly of the present invention.
Reference numerals in the drawings: 1. a composite tube; 2. a cross roll straightening assembly;
3. an induction heating assembly; 31. a medium-low frequency heating module; 32. a superaudio heating module; 301. a transformer; 302. a wiring board; 303. a motor; 304. a gear; 305. a sliding table; 306. a rack; 307. a heavy-duty guide rail; 308. an inductor; 309. a water pipe;
4. an outer temperature control assembly; 41. a temperature measurement module; 42. a temperature control module; 401. an XY bracket; 402. a second infrared camera; 403. a telescoping member; 404. a magnetic conductive member; 405. a cooling member; 406. a pipe clamp; 407. a cooling tube; 408. an L bracket;
5. an inner temperature measurement assembly; 501. a driving member; 502. a linear bearing; 503. a squeeze roll; 504. a cantilever bar; 505. a first infrared camera;
6. and the carrier roller assembly.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
In the description of the present invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," and the like indicate directional or positional relationships, and are based on the directional or positional relationships shown in the drawings, for convenience of description only, and do not indicate or imply that the devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
A large-caliber copper-aluminum composite pipe (Aluminum Clad Copper Tube, ACC pipe) is characterized in that the composite layer material is a certain brass alloy (the stress relief annealing treatment temperature range is 215-230 ℃, namely T 1 =215℃，T 2 The base material is an aluminum alloy (the stress relief annealing temperature range is 250 ℃ to 290 ℃, namely T) 3 =250℃，T 4 =290 ℃), the composite plate is first prepared by cold rolling, and then the ACC tube is formed by welding, so that the ACC tube finished product needs to be subjected to low-temperature annealing treatment to eliminate machining stress.
The utility model provides an online destressing processing apparatus of heavy-calibre ACC pipe, as shown in FIG. 2, it mainly includes ACC pipe 1, induction heating subassembly 3, interior temperature measurement subassembly 5, outer temperature control subassembly 4, bearing roller subassembly 6 and diagonal roller straightening subassembly 2, ACC pipe 1 head and tail both ends respectively are equipped with a set of diagonal roller straightening subassembly 2, install induction heating subassembly 3 and bearing roller subassembly 6 between two sets of diagonal roller straightening subassemblies 2, from the front to the back along ACC pipe 1 axis direction, induction heating subassembly 3 comprises well low frequency heating module 31 and ultrasonic frequency heating module 32 two parts, well low frequency heating module 31 and ultrasonic frequency heating module 32 are all formed by induction heating device, induction heating device is all supporting to be equipped with outer temperature control subassembly 4, ACC pipe 1 afterbody is provided with interior temperature measurement subassembly 5, diagonal roller straightening subassembly 2 and bearing roller subassembly 6 drive ACC pipe 1 forward motion according to the fixed speed.
As shown in fig. 2, the medium-low frequency heating module 31 includes three sets of induction heating devices, which are sequentially low frequency (500 Hz), medium frequency (8 kHz) and low frequency (800 Hz) in the axial direction of the ACC tube 1 from front to back, and the ultrasonic frequency heating module 32 includes only one set of induction heating devices, which is set to ultrasonic frequency (25 kHz).
As shown in fig. 3, the induction heating device comprises a transformer 301, a wiring board 302, a motor 303, a gear 304, a sliding table 305, a rack 306, a heavy-duty guide rail 307, an inductor 308 and a water through pipe 309, wherein the heavy-duty guide rail 307 is installed on a foundation, the heavy-duty guide rail 307 is slidably installed with the sliding table 305, the transformer 301 is fixedly installed at the upper end of the sliding table 305, the wiring board 302 is arranged at the side end of the transformer 301, the inductor 308 is fixedly installed on the wiring board 302, the inductor 308 is provided with a water inlet and a water outlet and is communicated with a cooling system through the water through pipe 309, the rack 306 is fixedly arranged at the side of the heavy-duty guide rail 307, the motor 303 is installed at the side end of the sliding table 305 close to the rack 306, the gear 304 is installed on an output shaft of the motor 303, the gear 304 is meshed with the rack 306, and the induction heating device can adjust the position along the axial direction of the ACC pipe 1 by a short distance.
As shown in fig. 5, the inner temperature measuring assembly 5 mainly includes a driving member 501, a linear bearing 502, a squeeze roller 503, a cantilever rod 504 and a first infrared camera 505, the bottom of the inner temperature measuring assembly 5 is consistent with the bottom structure of the induction heating device, the inner temperature measuring assembly and the bottom structure of the induction heating device are both composed of a front-back position adjusting system composed of a sliding table 305, a motor 303, a gear 304, a rack 306 and a heavy-duty guide rail 307, the driving member 501 is fixedly installed on the top of the sliding table 305, two pairs of squeeze rollers 503 and linear bearings 502 are arranged on the top of the driving member 501, a driving system for driving the squeeze roller 503 is arranged in the driving member 501, the axis of the linear bearings 502 is collinear with the axis of the ACC tube 1, the cantilever rod 504 is coaxially installed with the linear bearings 502, the cantilever rod 504 is provided with an installation groove for circumferentially stopping and installing the first infrared camera 505, four groups of first infrared cameras 505 are installed on the cantilever rod 504 along the axis of the cantilever rod under the action of the squeeze roller 503, and when the starting ends of the cantilever rod 504 and the starting ends of the medium-low frequency heating module 31 are aligned, the four groups of the first infrared cameras 505 are respectively located at the corresponding positions inside the ACC tube 1.
As shown in fig. 4, the external temperature control assembly 4 includes a temperature measurement module 41 and a temperature control module 42, the temperature measurement module 41 is composed of an XY bracket 404 and a second infrared camera 402, a fixed end of the XY bracket 401 is installed at a side end of the transformer 301, the second infrared camera 402 is installed at a bottom of a lifting end of the XY bracket 401, the temperature control module 42 includes a telescopic member 403, a magnetic conductive member 404, a cooling member 405, a pipe clamp 406, a cooling pipe 407 and an L bracket 408, a fixed end of the L bracket 408 is installed at a side end of a sliding table 305 of the induction heating device, the magnetic conductive member 404 is installed at a top end of the L bracket 408, the magnetic conductive member 404 is connected with the cooling member 405 through two groups of telescopic members 403, and an input end of the cooling member 405 is connected with the cooling pipe 407 through a pipe clamp 406.
As shown in fig. 4a, the magnetic conductive member 404 is formed by a plurality of groups of arc-shaped magnetic conductive bodies in a circumferential array, as shown in fig. 4b, the cooling member 405 comprises two sections which can be controlled independently, each section is formed by a plurality of groups of strip-shaped nozzles (the inner wall surface and the two side surfaces are provided with spray holes, the spray holes on the inner wall surface are used for controlling the temperature of the outer surface of the ACC tube 1 in a multi-layer manner), the side spray holes are used for cooling the magnetic conductive member 404 and controlling the temperature of the outer surface of the ACC tube 1 in a multi-layer manner), the nozzles (mainly used for cooling the magnetic conductive member 404 and controlling the temperature of the outer surface of the ACC tube 1) on the inner section of the sensor 308 are arranged in a circumferential array, and the nozzle (mainly used for controlling the temperature of the outer surface of the ACC tube 1 in the multi-layer manner) on the outer section of the sensor 308 is arranged in a staggered array with the magnetic conductive member 404.
In this embodiment, cooling water is used to cool the temperature-sensitive magnetic conductive member 404 on the outer surface of the cladding of the ACC tube 1, so that the temperature measuring environment outside the ACC tube 1 contains a large amount of water vapor during the heat treatment process, and the water vapor content in the ACC tube is low, so that the second infrared camera 402 of the temperature measuring module 41 of the outer temperature control assembly 4 adopts a colorimetric thermometer, and the first infrared camera 505 of the inner temperature measuring assembly 5 adopts a (monochromatic) infrared thermometer.
In a preferred embodiment of the present invention, an on-line destressing process for a large-caliber ACC pipe, as shown in FIG. 1, comprises the following steps:
s1, determining corresponding destressing heat treatment temperatures of ACC pipe base layers and cladding materials:
the specification of the ACC pipe is phi 406mm multiplied by 9.53mm, wherein the cladding material is a certain brass alloy (the thickness is 1.33 mm), the base material is a certain aluminum alloy (the thickness is 8.2 mm), the stress relief annealing temperature range of the brass alloy is 215-230 ℃, the stress relief annealing temperature range of the aluminum alloy is 250-290 ℃, the stress relief annealing temperature range of the copper-aluminum bonding layer is undefined, the mechanical property after the stress relief annealing treatment is detected through a tensile test or a hardness test, and the stress relief annealing treatment is influenced by the dimension, and the embodiment adopts the hardness test;
s2, preliminarily determining technological parameters through a numerical simulation technology, and debugging:
s21, electromagnetic heating is carried out on the ACC pipe by the medium-low frequency heating module;
s22, enabling the temperature of the outer surface of the base layer to be always lower than 290 ℃ through an outer temperature control assembly;
s23, heat is transferred to the composite layer through heat conduction, and the inner temperature measuring component monitors the temperature of the inner surface of the composite layer:
repeating the steps S21 to S23 if the temperature of the inner surface of the multilayer does not reach 175 ℃ to 195 ℃, and continuing the step S24 if the temperature of the inner surface of the multilayer reaches 175 ℃ to 195 ℃;
s24, electromagnetic heating is carried out on the ACC pipe by the ultrasonic heating module;
s25, controlling the temperature of the outer surface of the base layer by the outer temperature control assembly, and monitoring the temperature of the inner surface of the composite layer by the inner temperature measurement assembly:
s251, repeating the steps S24 to S251 if the temperature of the inner surface of the multilayer does not reach 215 ℃, and continuing the step S26 if the temperature of the inner surface of the multilayer reaches 215 ℃;
s252, repeating the steps S24 to S252 if the temperature of the outer surface of the base layer does not reach 290 ℃, and continuing the step S26 if the temperature of the outer surface of the base layer reaches 290 ℃;
s26, the ACC pipe base layer and the composite layer meet the corresponding stress-relief heat treatment temperature requirements;
s3, performing hardness test on the copper-aluminum bonding layer of the ACC tube after stress relief heat treatment:
if the hardness test of the copper-aluminum bonding layer of the ACC pipe meets the mechanical property requirement, continuing the step S4, otherwise, repeating the steps S2 to S3;
s4, determining technological parameters, formulating technological cards and putting into production.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (2)
1. The destressing process for the on-line destressing treatment of the large-caliber composite pipe is characterized by comprising the following steps of: the method comprises the following steps:
s1, determining the corresponding stress-relief heat treatment temperature of a composite pipe base layer and a composite material:
the composite tube is used as a composite layer material of an inner layer and is used as a base layer material of an outer layer and is used as an alloy B, the stress relief annealing temperature range of the alloy A is T1-T2, and the stress relief annealing temperature range of the alloy B is T3-T4;
s2, preliminarily determining technological parameters through a numerical simulation technology, and debugging:
s21, electromagnetic heating is carried out on the composite pipe by the medium-low frequency heating module;
s22, enabling the temperature of the outer surface of the base layer to be always lower than T4 through the outer temperature control assembly;
s23, heat is transferred to the composite layer through heat conduction, and the inner temperature measuring component monitors the temperature of the inner surface of the composite layer:
repeating steps S21 to S23 if the temperature of the inner surface of the multilayer does not reach (T1-40) to (T1-20), and continuing step S24 if the temperature of the inner surface of the multilayer reaches (T1-40) to (T1-20);
s24, electromagnetic heating is carried out on the composite pipe by the ultrasonic heating module;
s25, controlling the temperature of the outer surface of the base layer by the outer temperature control assembly, and monitoring the temperature of the inner surface of the composite layer by the inner temperature measurement assembly:
s251, repeating the steps S24 to S251 if the temperature of the inner surface of the multilayer does not reach T1, and continuing the step S26 if the temperature of the inner surface of the multilayer reaches T1;
s252, repeating the steps S24 to S252 if the temperature of the outer surface of the base layer does not reach T4, and continuing the step S26 if the temperature of the outer surface of the base layer reaches T4;
s26, the composite pipe base layer and the composite layer meet the corresponding stress-relief heat treatment temperature requirements;
s3, carrying out hardness test on the composite pipe bonding layer subjected to stress-relief heat treatment:
if the hardness test of the composite pipe bonding layer meets the mechanical property requirement, continuing the step S4, otherwise, repeating the steps S2 to S3;
s4, determining technological parameters, formulating technological cards and putting into production;
the destressing process for the on-line destressing treatment of the large-caliber composite pipe is realized through a device, the device comprises a composite pipe (1), an induction heating component (3), an inner temperature measuring component (5), an outer temperature control component (4), a carrier roller component (6) and a diagonal roller straightening component (2), wherein a group of diagonal roller straightening components (2) are respectively arranged at the head end and the tail end of the composite pipe (1), the induction heating component (3) and the carrier roller component (6) are arranged between the two groups of diagonal roller straightening components (2), the induction heating component (3) is formed by a middle-low frequency heating module (31) and a supersonic frequency heating module (32) from front to back along the axis direction of the composite pipe (1), the middle-low frequency heating module (31) and the supersonic frequency heating module (32) are respectively formed by induction heating devices, the outer temperature control component (4) is respectively arranged on the induction heating devices in a matched mode, the tail end of the composite pipe (1) is provided with the inner temperature measuring component (5), and the diagonal roller straightening component (2) and the carrier roller component (6) are driven to move forwards at a preset speed;
the medium-low frequency heating module (31) comprises three groups of induction heating devices, the frequency settings from front to back along the axis direction of the composite pipe (1) are sequentially low frequency 50 Hz-1 kHz, medium frequency 1 kHz-20 kHz and low frequency 50 Hz-1 kHz, the ultrasonic frequency heating module (32) only comprises one group of induction heating devices, and the frequency is set to ultrasonic frequency 20 kHz-40 kHz.
2. The process for on-line stress relief treatment of large-diameter composite pipes according to claim 1, wherein the process comprises the following steps: the induction heating device comprises a transformer (301), a wiring board (302), a motor (303), a gear (304), a sliding table (305), a rack (306), a heavy-duty guide rail (307), an inductor (308) and a water pipe (309), wherein the heavy-duty guide rail (307) is installed on a foundation, the sliding table (305) is installed on the heavy-duty guide rail (307) in a sliding mode, the transformer (301) is fixedly installed at the upper end of the sliding table (305), the wiring board (302) is arranged at the side end of the transformer (301), the inductor (308) is fixedly installed on the wiring board (302), the inductor (308) is provided with a water inlet and a water outlet, and is communicated with a cooling system through the water pipe (309), the rack (306) is fixedly arranged at the side of the heavy-duty guide rail (307), the sliding table (305) is close to the side end of the rack (306), the gear (304) is installed on the output shaft of the motor (303), the gear (304) is meshed with the induction heating device, and the position of the rack (306) can be adjusted along the axis line direction of the composite heating device;
the outer temperature control assembly (4) comprises a temperature measurement module (41) and a temperature control module (42), the temperature measurement module (41) is composed of an XY support (401) and a second infrared camera (402), the fixed end of the XY support (401) is installed at the side end of a transformer (301), the second infrared camera (402) is installed at the bottom of the lifting end of the XY support (401), the temperature control module (42) comprises a telescopic piece (403), a magnetic conduction piece (404), a cooling piece (405), a pipe hoop (406), a cooling pipe (407) and an L support (408), the fixed end of the L support (408) is installed at the side end of a sliding table (305) of the induction heating device, the magnetic conduction piece (404) is installed at the top end of the L support (408), the magnetic conduction piece (404) is connected with the cooling piece (405) through two groups of telescopic pieces (403), and the input end of the cooling piece (405) is connected with the cooling pipe (407) through the pipe hoop (406).
The magnetic conduction piece (404) is formed by a plurality of groups of arc-shaped magnetic conductors in a circumferential array, the cooling piece (405) comprises two sections which can be independently controlled, each section is formed by a plurality of groups of strip-shaped nozzles in a circumferential array, the nozzles of the cooling piece (405) positioned at the inner section of the inductor (308) are staggered with the magnetic conductors corresponding to the magnetic conduction piece (404), and the nozzle array of the cooling piece (405) positioned at the outer section of the inductor (308) is consistent with the magnetic conductor array law;
the inner temperature measuring assembly (5) mainly comprises a driving part (501), a linear bearing (502), a squeeze roller (503), a cantilever rod (504) and a first infrared camera (505), wherein the bottom of the inner temperature measuring assembly (5) is consistent with the bottom of the induction heating device in structure, the inner temperature measuring assembly comprises a front-back position adjusting system consisting of a sliding table (305), a motor (303), a gear (304), a rack (306) and a heavy-duty guide rail (307), the driving part (501) is fixedly arranged at the top of the sliding table (305), two pairs of squeeze roller (503) and linear bearing (502) are arranged at the top of the driving part (501), a driving system for driving the squeeze roller (503) is arranged inside the driving part (501), the axis of the linear bearing (502) is collinear with the axis of the composite tube (1), the cantilever rod (504) is coaxially arranged on the linear bearing (502), a mounting groove for circumferentially stopping and mounting the first infrared camera (505) is formed on the cantilever rod (504), the cantilever rod (504) can move along the first infrared camera (505) when the initial end (31) and the initial end (31) of the first infrared camera (31) are aligned with the initial end (31), the four groups of first infrared cameras (505) are respectively positioned at corresponding positions inside the composite tube (1) surrounded by the inductors (308) of the four groups of induction heating devices.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1478204A (en) * | 1973-07-16 | 1977-06-29 | Hehl Karl | Method and device for producing surface-hardened regions on alloy steel articles |
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| GB1478204A (en) * | 1973-07-16 | 1977-06-29 | Hehl Karl | Method and device for producing surface-hardened regions on alloy steel articles |
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