CN115074495A - Quenching and tempering process for outer wall supersonic frequency quenching oil pipe and oil pipe - Google Patents
Quenching and tempering process for outer wall supersonic frequency quenching oil pipe and oil pipe Download PDFInfo
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- CN115074495A CN115074495A CN202210605864.0A CN202210605864A CN115074495A CN 115074495 A CN115074495 A CN 115074495A CN 202210605864 A CN202210605864 A CN 202210605864A CN 115074495 A CN115074495 A CN 115074495A
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- 238000010791 quenching Methods 0.000 title claims abstract description 126
- 230000000171 quenching effect Effects 0.000 title claims abstract description 122
- 238000005496 tempering Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008569 process Effects 0.000 title claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 22
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000005674 electromagnetic induction Effects 0.000 claims description 7
- 229910001566 austenite Inorganic materials 0.000 claims description 5
- 230000007547 defect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000032258 transport Effects 0.000 claims description 2
- 238000011282 treatment Methods 0.000 description 6
- 229910000734 martensite Inorganic materials 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 229910000617 Mangalloy Inorganic materials 0.000 description 4
- QFGIVKNKFPCKAW-UHFFFAOYSA-N [Mn].[C] Chemical compound [Mn].[C] QFGIVKNKFPCKAW-UHFFFAOYSA-N 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 229910001563 bainite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
-
- 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
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- 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
- C21D9/085—Cooling or quenching
-
- 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
Abstract
The invention discloses an outer wall superaudio frequency quenching oil pipe quenching tempering process and an oil pipe, which comprise pipe blank preparation, production line operation, quenching feeding, superaudio frequency heating quenching, spray cooling, drying dewatering, superaudio frequency heating tempering, high-pressure water descaling and collecting trapping.
Description
Technical Field
The invention relates to the technical field of quenching and tempering processes, in particular to an outer wall superaudio frequency quenching oil pipe quenching and tempering process and an oil pipe.
Background
The quenching of the oil pipe is a heat treatment process of heating the oil pipe to above a critical temperature, preserving heat for a period of time to ensure that the oil pipe is completely or partially austenized, then rapidly cooling the oil pipe to below Ms at a cooling speed higher than the critical cooling speed to perform martensite (or bainite) transformation, the tempering is a heat treatment process of heating the quenched metal finished product or part to a certain temperature, preserving heat for a certain time and cooling the metal finished product or part in a certain mode, and the tempering is an operation carried out immediately after quenching and is also the last procedure of heat treatment of the workpiece generally, so the combined process of quenching and tempering is called final treatment.
Chinese patent application publication No. CN113584289 discloses an online quenching and tempering manufacturing process of a coiled tubing, wherein the coiled tubing is subjected to full tube austenitization after high-frequency welding, then quenching is carried out, sizing of the tube is carried out after quenching is finished, and then tempering treatment of the full tube is carried out, and the process has the advantages that: according to the invention, through the on-line quenching and tempering heat treatment process of the coiled tubing, the material strength and the fatigue life of the coiled tubing are improved, the self-locking problem of the coiled tubing is solved, and the running depth of the coiled tubing is increased.
The oil pipe quenching and tempering process has the following problems in actual operation: the existing oil pipe quenching tempering process easily causes quenching cracks on the surface of part of the oil pipe, influences the normal use of the oil pipe and causes insufficient strength of the oil pipe.
Disclosure of Invention
The invention aims to provide an outer wall supersonic frequency quenching oil pipe quenching tempering process and an outer wall supersonic frequency quenching oil pipe, aiming at solving the problem.
The invention is realized by the following steps:
an outer wall superaudio quenching oil pipe quenching tempering process comprises the following specific steps:
s1: preparation of tube blanks
The pipe blanks to be quenched and tempered are transported to a loading frame of an oil pipe quenching and tempering production line through hoisting equipment, the appearances of all the oil pipes are checked by workers, the appearance of all the oil pipes is guaranteed to be free of defects, meanwhile, the pipe blanks need to be regularly arranged and distributed by the workers, and the oil pipes can sequentially enter the production line to be quenched and tempered for heat treatment after the whole quenching and tempering production line starts to operate;
s2: production line operation
Opening all the devices on the production line, ensuring that each device on the production line can normally work and operate, meeting the requirement of quenching and tempering the pipe blank in the operation effect, and simultaneously electrifying the ultrasonic frequency induction furnace for waiting materials;
s3: quenching material loading
A worker operates the stepping feeding machine to stably lift and roll a first oil pipe on the feeding frame from the outlet end of the feeding frame to a roller way of the aligning device, and the variable-frequency feeding machine feeds forward at a set speed;
s4: superaudio frequency heating quenching
The frequency conversion feeder conveys the oil pipe to the end part of an electromagnetic heating coil of the superaudio frequency heating furnace, the continuous operation of the frequency conversion feeder can drive the oil pipe to advance gradually in sections and pass through the electromagnetic heating coil, and simultaneously, the superaudio frequency quenching induction heating furnace is matched with the electromagnetic heating coil to continuously heat the oil pipe advancing gradually in sections to 860-980 ℃ so that the surface of the oil pipe is completely converted into austenite;
s5: spray cooling
The oil pipe after quenching and heating can be conveyed to a spray cooling area by a variable frequency feeder, annular spray equipment is arranged in the spray cooling area, and a quenching medium is sprayed on the surface of the heated oil pipe in a high-pressure mode through the annular spray equipment, so that the temperature of the surface of the oil pipe can be quickly reduced to a specified temperature, and the effectiveness of quenching the oil pipe is ensured;
s6: drying to remove water
The cooled oil pipe enters the pneumatic upender under the transportation of the variable-frequency feeder, the oil pipe is inclined, water on the oil pipe can be drained under the operation of the pneumatic upender, and the surface of the oil pipe is ensured to be sufficiently dry;
s7: superaudio frequency heating tempering
The dried oil pipe can be put on a tempering conveying line by a pneumatic material turning machine, the oil pipe enters a superaudio frequency electromagnetic heating area under the conveying of a variable frequency feeding machine, the oil pipe can be gradually advanced by the variable frequency feeding machine in a segmented mode and passes through an electromagnetic heating coil, and the heating coil can heat the oil pipe to 620-740 ℃;
s8: descaling with high-pressure water
Conveying the tempered oil pipe by a variable frequency conveyor through a high-pressure water descaling device, removing scales on the surface of the oil pipe by the operation of the high-pressure water descaling device, picking up the oil pipe by a picking-up device, stably placing the picked-up oil pipe on a cooling bed, and driving the oil pipe to slowly move and gradually cool by a driving roller on the cooling bed;
s9: collecting bag
The oil pipe is discharged from the collecting basket at the discharge port of the cooling bed, the worker transports the oil pipe of the collecting basket to the bundling area for bundling, and the oil pipe is moved to the next working procedure position by the hoisting equipment after bundling is finished.
Optionally, in step S3, the frequency conversion feeder is a single-roller transmission type feeder with adjustable speed and height, and the roller type is a specially designed wheel type feeder inclined by 10 °.
By adopting the technical scheme, the variable-frequency feeder has the functions of horizontal feeding, deviation rectifying, centering and workpiece self-rotation.
Optionally, in step S3, the feed roller corresponding to the heating coil of the ultrasonic induction furnace and the feed rollers at the coil inlet and outlet are made of heat-resistant steel, and a rotary sealed internal water cooling device is arranged inside the feed rollers.
Through adopting above-mentioned technical scheme for it can have good heat resistance, and cooling device cooling feed roll and make feed roll surface dry, the oil pipe continuous heating of being convenient for.
Optionally, in step S3, the frequency conversion feeder removes the feeding roller corresponding to the superaudio electromagnetic heating furnace, and the rest feeding rollers are made of wear-resistant steel.
Through adopting above-mentioned technical scheme for the frequency conversion feeder wearability is high, improves the life of frequency conversion feeder.
Optionally, an infrared thermometer is disposed at an outlet of the electromagnetic heating coil in step S4, and the infrared thermometer is connected to a control system of the superaudio electromagnetic heating furnace.
By adopting the technical scheme, the infrared thermometer can measure the temperature of the oil pipe and feed the temperature of the oil pipe back to the control system of the superaudio electromagnetic heating furnace, so that the control system can conveniently adjust the output power according to the quenching requirement.
Optionally, the quenching medium in step S5 is pure water.
By adopting the technical scheme, the pure water can better quench the oil pipe made of the carbon-manganese steel, can avoid the quenching cracks on the surface of the oil pipe in the quenching process, and can be recycled after a series of treatments such as filtration and adsorption.
Optionally, in step S5, the time for the spraying device to perform high-pressure spraying on the oil pipe is 10S to 20S.
By adopting the technical scheme, the structure transformation of quenched martensite can be realized for the oil pipe.
Optionally, in step S5, a baffle and a protective cover are disposed around the spraying region.
Through adopting above-mentioned technical scheme, the baffle can effectually block the water spill, is favorable to the water economy resource, and the protection casing can block orderly effluvium, guarantees the sufficient drying in workshop.
Optionally, the time for the pneumatic upender to dry the oil pipe in step S6 should not be less than 6 minutes.
By adopting the technical scheme, the oil pipe can be fully dried, and the water stain remained on the surface of the oil pipe is avoided.
An oil pipe comprises an oil pipe body, wherein the oil pipe body is processed by adopting the quenching and tempering process.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention comprises the following steps: through improving and optimizing the structure of the oil pipe quenching tempering process, the oil pipe quenching tempering process adopts the superaudio frequency heating equipment to effectively and quickly heat the oil pipe, the quenching effect of the oil pipe can be further improved, excessive oil pipes are prevented from generating quenching cracks in the quenching process, and the rejection rate of the oil pipe is reduced.
(2) The invention comprises the following steps: through improving and optimizing the structure of oil pipe quenching tempering technology for oil pipe intensity obtains effectual improvement after quenching and tempering, makes the intensity of oil pipe can satisfy the user demand in the oil development process completely, and the quenching tempering technology of this kind of structure compares traditional technology convenient operation simultaneously, and quenches efficiently, convenient quick quenching tempering to oil pipe.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block flow diagram of a quench tempering process of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example 1: referring to fig. 1: a pipe blank needing quenching and tempering is conveyed to a feeding frame of an oil pipe quenching and tempering production line through lifting equipment, appearance of all oil pipes is checked by workers, the appearance of all the oil pipes is guaranteed to be free of defects, meanwhile, the pipe blank needs to be distributed in a neat arrangement mode by the workers, and the oil pipes can sequentially enter the production line to be subjected to quenching and tempering heat treatment after the whole quenching and tempering production line starts to operate conveniently. And then all the devices on the production line are opened, so that each device on the production line can work and operate normally, the operation effect can meet the requirement on quenching and tempering of the pipe blank, and meanwhile, the ultrasonic frequency electromagnetic induction furnace needs to be electrified for material waiting.
After quenching and tempering processing is started, a worker operates a stepping feeding machine to stably lift and roll a first oil pipe on a feeding frame from the outlet end of the feeding frame and send the oil pipe to a roller way of an alignment device, a variable frequency feeding machine feeds the oil pipe forwards at a set speed, the variable frequency feeding machine is in single-roller transmission, the speed and the height are adjustable, the roller type is a wheel type feeding machine which is specially designed and arranged in an inclined mode of 10 degrees, the variable frequency feeding machine has the functions of horizontal feeding, deviation rectifying and centering and workpiece self-rotating, the position of the oil pipe on the variable frequency feeding machine can be adjusted, a feeding roller corresponding to a heating coil of a super-audio frequency electromagnetic induction furnace and a feeding roller at an inlet and an outlet of the coil are made of heat-resistant steel, a rotary sealing internal water cooling device is arranged inside the feeding roller, the feeding roller is cooled, the outer surface of the feeding roller is dried, and the oil pipe is convenient to be continuously heated; the frequency conversion feeder is made of wear-resistant steel except the feeding rollers corresponding to the ultrasonic frequency electromagnetic heating furnace, so that the frequency conversion feeder is high in wear resistance, and the service life of the frequency conversion feeder is prolonged;
the oil pipe is conveyed to the end part of an electromagnetic heating coil of the superaudio frequency heating furnace by the variable frequency feeder, the continuous operation of the variable frequency feeder can drive the oil pipe to gradually advance in sections and pass through the electromagnetic heating coil, and simultaneously, the superaudio frequency quenching induction heating furnace is matched with the electromagnetic heating coil to continuously heat the oil pipe which advances in sections and gradually to 860 ℃, so that the surface of the oil pipe is completely converted into austenite;
the oil pipe after quenching and heating can be transported to a spray cooling area by a variable frequency feeder, the spray cooling area is provided with annular spraying equipment, a quenching medium is sprayed on the surface of the heated oil pipe in a high-pressure mode through the annular spraying equipment, so that the temperature on the surface of the oil pipe can be quickly reduced to a specified temperature, the time for spraying the oil pipe by a spraying device in a high-pressure mode is 10-20S, the oil pipe can realize the structure transformation of quenching martensite, the quenching effectiveness of the oil pipe is ensured, the quenching medium is pure water, the pure water can better quench the oil pipe made of carbon-manganese steel, the quenching crack generated on the surface of the oil pipe in the quenching process can be avoided, the pure water can be recycled after a series of treatments such as filtration, adsorption and the like, baffles and protective covers are arranged around the spray area, the baffles can effectively prevent water from splashing out, and are favorable for saving water resources, the protective cover can prevent the air from scattering out in order, and the sufficient drying of a workshop is ensured.
The oil pipe cooled under the transportation of the variable-frequency feeder enters a pneumatic upender, the oil pipe is inclined, water on the oil pipe can be drained under the operation of the pneumatic upender, the surface of the oil pipe is dry enough, the time for the pneumatic upender to dry the oil pipe is not less than 6 minutes, the oil pipe can be dry sufficiently, water stains on the surface of the oil pipe are avoided, the oil pipe after being dried can be thrown onto a tempering conveying line by the pneumatic upender, the oil pipe enters a superaudio electromagnetic heating area under the transportation of the variable-frequency feeder, the oil pipe can be gradually advanced by the variable-frequency feeder through an electromagnetic heating coil, and the heating coil can heat the oil pipe to 620 ℃;
the tempered oil pipe passes through high-pressure water descaling equipment under the conveying of a variable-frequency conveyor, the oil pipe removes scales on the surface of the oil pipe under the operation of the high-pressure water descaling equipment, then the oil pipe is picked up by the pickup equipment and is stably placed on a cooling bed, a transmission roller on the cooling bed can drive the oil pipe to slowly move and gradually cool, then the oil pipe is discharged out of a collecting basket at a discharge port of the cooling bed, a worker conveys the oil pipe of the collecting basket to a trapping area for trapping, and the oil pipe is moved to the next working procedure position by the pickup equipment after trapping is finished.
An oil pipe comprises an oil pipe body, wherein the oil pipe body is processed by adopting the quenching and tempering process.
Example 2: referring to fig. 1: a pipe blank needing quenching and tempering is conveyed to a feeding frame of an oil pipe quenching and tempering production line through lifting equipment, appearance of all oil pipes is checked by workers, the appearance of all the oil pipes is guaranteed to be free of defects, meanwhile, the pipe blank needs to be distributed in a neat arrangement mode by the workers, and the oil pipes can sequentially enter the production line to be subjected to quenching and tempering heat treatment after the whole quenching and tempering production line starts to operate conveniently. And then all the devices on the production line are opened, so that each device on the production line can work and operate normally, the operation effect can meet the requirement on quenching and tempering of the pipe blank, and meanwhile, the ultrasonic frequency electromagnetic induction furnace needs to be electrified for material waiting.
After quenching and tempering processing is started, a worker operates a stepping feeding machine to stably lift and roll a first oil pipe on a feeding frame from the outlet end of the feeding frame and send the oil pipe to a roller way of an alignment device, a variable frequency feeding machine feeds the oil pipe forwards at a set speed, the variable frequency feeding machine is in single-roller transmission, the speed and the height are adjustable, the roller type is a wheel type feeding machine which is specially designed and arranged in an inclined mode of 10 degrees, the variable frequency feeding machine has the functions of horizontal feeding, deviation rectifying and centering and workpiece self-rotating, the position of the oil pipe on the variable frequency feeding machine can be adjusted, a feeding roller corresponding to a heating coil of a super-audio frequency electromagnetic induction furnace and a feeding roller at an inlet and an outlet of the coil are made of heat-resistant steel, a rotary sealing internal water cooling device is arranged inside the feeding roller, the feeding roller is cooled, the outer surface of the feeding roller is dried, and the oil pipe is convenient to be continuously heated; the frequency conversion feeder is made of wear-resistant steel except the feeding rollers corresponding to the superaudio electromagnetic heating furnace, so that the frequency conversion feeder is high in wear resistance, and the service life of the frequency conversion feeder is prolonged;
the oil pipe is conveyed to the end part of an electromagnetic heating coil of the superaudio frequency heating furnace by the variable frequency feeder, the continuous operation of the variable frequency feeder can drive the oil pipe to gradually advance in sections and pass through the electromagnetic heating coil, and simultaneously the superaudio frequency quenching induction heating furnace is matched with the electromagnetic heating coil to continuously heat the oil pipe which advances in sections and gradually to 920 ℃, so that the surface of the oil pipe is completely converted into austenite;
the oil pipe after quenching and heating can be transported to a spray cooling area by a variable frequency feeder, the spray cooling area is provided with annular spraying equipment, a quenching medium is sprayed on the surface of the heated oil pipe in a high-pressure mode through the annular spraying equipment, so that the temperature on the surface of the oil pipe can be quickly reduced to a specified temperature, the time for spraying the oil pipe by a spraying device in a high-pressure mode is 10-20S, the oil pipe can realize the organization transformation of quenched martensite, the quenching effectiveness of the oil pipe is ensured, the quenching medium is pure water, the pure water can better quench the oil pipe made of carbon-manganese steel, the quenching cracks on the surface of the oil pipe in the quenching process can be avoided, the pure water can be recycled after a series of treatments such as filtration and adsorption, baffles and protective covers are arranged around the spray area, the baffles can effectively prevent water from splashing out, and are favorable for saving water resources, the protective cover can prevent the air from scattering out in order, and the sufficient drying of a workshop is ensured.
The cooled oil pipe enters a pneumatic upender under the transportation of a variable-frequency feeder, the oil pipe is inclined, water on the oil pipe can be drained out under the operation of the pneumatic upender, the surface of the oil pipe is dry enough, the time for the pneumatic upender to dry the oil pipe is not less than 6 minutes, the oil pipe can be dry enough, the oil pipe is prevented from remaining water stain on the surface of the oil pipe, the oil pipe which is dried can be put on a tempering conveying line by the pneumatic upender, the oil pipe enters a superaudio electromagnetic heating area under the transportation of the variable-frequency feeder, the oil pipe can be gradually advanced by the variable-frequency feeder in a segmented mode and passes through an electromagnetic heating coil, and the heating coil can heat the oil pipe to 680 ℃;
the tempered oil pipe passes through high-pressure water descaling equipment under the conveying of a variable-frequency conveyor, the oil pipe removes scales on the surface of the oil pipe under the operation of the high-pressure water descaling equipment, then the oil pipe is picked up by the pickup equipment and is stably placed on a cooling bed, a transmission roller on the cooling bed can drive the oil pipe to slowly move and gradually cool, then the oil pipe is discharged out of a collecting basket at a discharge port of the cooling bed, a worker conveys the oil pipe of the collecting basket to a trapping area for trapping, and the oil pipe is moved to the next working procedure position by the pickup equipment after trapping is finished.
An oil pipe comprises an oil pipe body, wherein the oil pipe body is processed by adopting the quenching and tempering process.
Example 3: referring to fig. 1: a pipe blank needing quenching and tempering is conveyed to a feeding frame of an oil pipe quenching and tempering production line through lifting equipment, appearance of all oil pipes is checked by workers, the appearance of all the oil pipes is guaranteed to be free of defects, meanwhile, the pipe blank needs to be distributed in a neat arrangement mode by the workers, and the oil pipes can sequentially enter the production line to be subjected to quenching and tempering heat treatment after the whole quenching and tempering production line starts to operate conveniently. And then all the devices on the production line are opened, so that each device on the production line can work and operate normally, the operation effect can meet the requirement on quenching and tempering of the pipe blank, and meanwhile, the ultrasonic frequency electromagnetic induction furnace needs to be electrified for material waiting.
After quenching and tempering processing is started, a worker operates a stepping feeding machine to stably lift and roll a first oil pipe on a feeding frame from the outlet end of the feeding frame and send the oil pipe to a roller way of an alignment device, a variable frequency feeding machine feeds the oil pipe forwards at a set speed, the variable frequency feeding machine is in single-roller transmission, the speed and the height are adjustable, the roller type is a wheel type feeding machine which is specially designed and arranged in an inclined mode of 10 degrees, the variable frequency feeding machine has the functions of horizontal feeding, deviation rectifying and centering and workpiece self-rotating, the position of the oil pipe on the variable frequency feeding machine can be adjusted, a feeding roller corresponding to a heating coil of a super-audio frequency electromagnetic induction furnace and a feeding roller at an inlet and an outlet of the coil are made of heat-resistant steel, a rotary sealing internal water cooling device is arranged inside the feeding roller, the feeding roller is cooled, the outer surface of the feeding roller is dried, and the oil pipe is convenient to be continuously heated; the frequency conversion feeder is made of wear-resistant steel except the feeding rollers corresponding to the ultrasonic frequency electromagnetic heating furnace, so that the frequency conversion feeder is high in wear resistance, and the service life of the frequency conversion feeder is prolonged;
the oil pipe is conveyed to the end part of an electromagnetic heating coil of the superaudio frequency heating furnace by the variable frequency feeder, the continuous operation of the variable frequency feeder can drive the oil pipe to gradually advance in sections and pass through the electromagnetic heating coil, and simultaneously, the superaudio frequency quenching induction heating furnace is matched with the electromagnetic heating coil to continuously heat the oil pipe which advances in sections and gradually to 980 ℃, so that the surface of the oil pipe is completely converted into austenite;
the oil pipe after quenching and heating can be transported to a spray cooling area by a variable frequency feeder, the spray cooling area is provided with annular spraying equipment, a quenching medium is sprayed on the surface of the heated oil pipe in a high-pressure mode through the annular spraying equipment, so that the temperature on the surface of the oil pipe can be quickly reduced to a specified temperature, the time for spraying the oil pipe by a spraying device in a high-pressure mode is 10-20S, the oil pipe can realize the organization transformation of quenched martensite, the quenching effectiveness of the oil pipe is ensured, the quenching medium is pure water, the pure water can better quench the oil pipe made of carbon-manganese steel, the quenching cracks on the surface of the oil pipe in the quenching process can be avoided, the pure water can be recycled after a series of treatments such as filtration and adsorption, baffles and protective covers are arranged around the spray area, the baffles can effectively prevent water from splashing out, and are favorable for saving water resources, the protective cover can prevent the air from scattering out in order, and the sufficient drying of a workshop is ensured.
The oil pipe cooled under the transportation of the variable-frequency feeder enters the pneumatic upender, the oil pipe is inclined, water on the oil pipe can be drained under the operation of the pneumatic upender, the surface of the oil pipe is sufficiently dried, the time for drying the oil pipe by the pneumatic upender is not less than 6 minutes, the oil pipe can be sufficiently dried, water stains on the surface of the oil pipe are avoided, the oil pipe after drying can be thrown onto a tempering conveying line by the pneumatic upender, the oil pipe enters a superaudio electromagnetic heating area under the conveying of the variable-frequency feeder, the oil pipe can be gradually advanced by the variable-frequency feeder through electromagnetic heating coils, and the heating coils can heat the oil pipe to 740 ℃;
the tempered oil pipe passes through the high-pressure water descaling equipment under the conveying of the variable-frequency conveyor, the oil pipe removes scales on the surface of the oil pipe under the operation of the high-pressure water descaling equipment, then the oil pipe is picked up by the picking equipment and is stably placed on the cooling bed, a transmission roller on the cooling bed can drive the oil pipe to slowly move and gradually cool, then the oil pipe is discharged out of the collecting basket at a discharge port of the cooling bed, a worker conveys the oil pipe of the collecting basket to a trapping area for trapping, and the oil pipe is moved to the next working procedure position by the lifting equipment after trapping is finished.
An oil pipe comprises an oil pipe body, wherein the oil pipe body is processed by adopting the quenching and tempering process.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An outer wall superaudio quenching oil pipe quenching tempering process is characterized in that: the quenching and tempering process comprises the following specific steps:
s1: preparation of tube blanks
The pipe blanks to be quenched and tempered are transported to a loading frame of an oil pipe quenching and tempering production line through hoisting equipment, the appearances of all the oil pipes are checked by workers, the appearance of all the oil pipes is guaranteed to be free of defects, meanwhile, the pipe blanks need to be regularly arranged and distributed by the workers, and the oil pipes can sequentially enter the production line to be quenched and tempered for heat treatment after the whole quenching and tempering production line starts to operate;
s2: production line operation
Opening all the devices on the production line, ensuring that each device on the production line can normally work and operate, meeting the requirement of quenching and tempering the pipe blank in the operation effect, and simultaneously electrifying the ultrasonic frequency induction furnace for waiting materials;
s3: quenching material loading
A worker operates the stepping feeding machine to stably lift and roll a first oil pipe on the feeding frame from the outlet end of the feeding frame to a roller way of the aligning device, and the variable-frequency feeding machine feeds forward at a set speed;
s4: superaudio frequency heating quenching
The frequency conversion feeder conveys the oil pipe to the end part of an electromagnetic heating coil of the superaudio frequency heating furnace, the continuous operation of the frequency conversion feeder can drive the oil pipe to advance gradually in sections and pass through the electromagnetic heating coil, and simultaneously, the superaudio frequency quenching induction heating furnace is matched with the electromagnetic heating coil to continuously heat the oil pipe advancing gradually in sections to 860-980 ℃ so that the surface of the oil pipe is completely converted into austenite;
s5: spray cooling
The oil pipe after quenching and heating can be conveyed to a spray cooling area by a variable frequency feeder, annular spray equipment is arranged in the spray cooling area, and a quenching medium is sprayed on the surface of the heated oil pipe in a high-pressure mode through the annular spray equipment, so that the temperature of the surface of the oil pipe can be quickly reduced to a specified temperature, and the effectiveness of quenching the oil pipe is ensured;
s6: drying to remove water
The cooled oil pipe enters the pneumatic upender under the transportation of the variable-frequency feeder, the oil pipe is inclined, water on the oil pipe can be drained under the operation of the pneumatic upender, and the surface of the oil pipe is ensured to be sufficiently dry;
s7: superaudio frequency heating tempering
The dried oil pipe can be put on a tempering conveying line by a pneumatic material turning machine, the oil pipe enters a superaudio frequency electromagnetic heating area under the conveying of a variable frequency feeding machine, the oil pipe can be gradually advanced by the variable frequency feeding machine in a segmented mode and passes through an electromagnetic heating coil, and the heating coil can heat the oil pipe to 620-740 ℃;
s8: descaling with high-pressure water
Conveying the tempered oil pipe by a variable frequency conveyor through a high-pressure water descaling device, removing scales on the surface of the oil pipe by the operation of the high-pressure water descaling device, picking up the oil pipe by a picking-up device, stably placing the picked-up oil pipe on a cooling bed, and driving the oil pipe to slowly move and gradually cool by a driving roller on the cooling bed;
s9: collecting bag
The oil pipe is discharged from the collecting basket at the discharge port of the cooling bed, the worker transports the oil pipe of the collecting basket to the bundling area for bundling, and the oil pipe is moved to the next working procedure position by the hoisting equipment after bundling is finished.
2. The quenching and tempering process for the outer wall superaudio quenching oil pipe as claimed in claim 1, wherein in the step S3, the frequency conversion feeder is in single-roller transmission, the speed and the height are adjustable, and the roller type is a wheel type feeding roller which is specially designed and arranged with an inclination of 10 degrees.
3. The outer wall superaudio quenching oil pipe quenching and tempering process according to claim 2, wherein in the step S3, the frequency conversion feeder is aligned with a feeding roller of a superaudio electromagnetic induction heating coil and a feeding roller of a coil inlet and outlet are made of heat-resistant steel, and a rotary sealing internal water cooling device is arranged inside the feeding roller.
4. The quenching and tempering process for the external wall superaudio quenching oil pipe as claimed in claim 3, wherein in the step S3, the frequency conversion feeder removes the feeding rollers corresponding to the superaudio electromagnetic heating furnace, and the rest feeding rollers are made of wear-resistant steel.
5. The quenching and tempering process for the outer wall superaudio quenching oil pipe as claimed in claim 1, wherein an infrared thermometer is arranged at an outlet of the electromagnetic heating coil in the step S4 and the step S7, and the infrared thermometer is connected with a control system of the superaudio electromagnetic heating furnace.
6. The quenching and tempering process for the outer wall superaudio quenching oil pipe as claimed in claim 1, wherein the quenching medium in the step S5 is pure water.
7. The quenching and tempering process for the external wall ultrasonic frequency quenching oil pipe as claimed in claim 6, wherein the time for the spray device to spray the oil pipe at high pressure in step S5 is 10S-20S.
8. The quenching and tempering process for the external wall ultrasonic frequency quenching oil pipe as claimed in claim 7, wherein a baffle and a protective cover are arranged around the spraying area in the step S5.
9. The quenching and tempering process for the outer wall ultrasonic frequency quenching oil pipe as claimed in claim 8, wherein the time for the pneumatic upender to dry the oil pipe in the step S6 is not less than 6 minutes.
10. An oil pipe, comprising an oil pipe body, characterized in that the oil pipe body is processed by the quenching and tempering process according to any one of claims 1 to 9.
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| CN202210605864.0A CN115074495A (en) | 2022-05-30 | 2022-05-30 | Quenching and tempering process for outer wall supersonic frequency quenching oil pipe and oil pipe |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52135822A (en) * | 1976-05-08 | 1977-11-14 | Aeg Elotherm Gmbh | Method of heat treatment thick steel tubes |
| CN101078042A (en) * | 2007-06-28 | 2007-11-28 | 朱兴发 | Medium frequency induction heating treatment method for steel pipe, petroleum well pipe and drill pipe |
| CN101220408A (en) * | 2008-01-23 | 2008-07-16 | 江苏凡力钢管有限公司 | Oil tube electrical heat quenching and tempering thermal treatment method and apparatus |
| CN101942615A (en) * | 2010-08-26 | 2011-01-12 | 姚圣法 | Machining method of high-strength and ultra high-strength steel tubes |
| CN215279270U (en) * | 2021-08-02 | 2021-12-24 | 新疆聚能石油装备再制造有限公司 | Oil field waste oil pipe repair equipment |
-
2022
- 2022-05-30 CN CN202210605864.0A patent/CN115074495A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52135822A (en) * | 1976-05-08 | 1977-11-14 | Aeg Elotherm Gmbh | Method of heat treatment thick steel tubes |
| CN101078042A (en) * | 2007-06-28 | 2007-11-28 | 朱兴发 | Medium frequency induction heating treatment method for steel pipe, petroleum well pipe and drill pipe |
| CN101220408A (en) * | 2008-01-23 | 2008-07-16 | 江苏凡力钢管有限公司 | Oil tube electrical heat quenching and tempering thermal treatment method and apparatus |
| CN101942615A (en) * | 2010-08-26 | 2011-01-12 | 姚圣法 | Machining method of high-strength and ultra high-strength steel tubes |
| CN215279270U (en) * | 2021-08-02 | 2021-12-24 | 新疆聚能石油装备再制造有限公司 | Oil field waste oil pipe repair equipment |
Non-Patent Citations (1)
| Title |
|---|
| 刘永铨: "钢的热处理 修订版", 冶金工业出版社, pages: 230 * |
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