CN112872207A - Online steel pipe performance adjusting device and steel pipe hot expanding and online performance adjusting process - Google Patents
Online steel pipe performance adjusting device and steel pipe hot expanding and online performance adjusting process Download PDFInfo
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- CN112872207A CN112872207A CN202110115181.2A CN202110115181A CN112872207A CN 112872207 A CN112872207 A CN 112872207A CN 202110115181 A CN202110115181 A CN 202110115181A CN 112872207 A CN112872207 A CN 112872207A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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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
- C21D1/06—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
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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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
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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
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- 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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Abstract
The on-line steel pipe performance adjusting device comprises a heat treatment core die, a heat treatment heating coil and a cooling device, wherein the heat treatment core die is connected with the steel pipe heat expansion core die into a whole, the heat treatment heating coil is connected with the steel pipe heat expansion heating coil into a whole in series, the steel pipe heat expansion heating coil, the heat treatment heating coil and the cooling device are sequentially arranged outside a steel pipe from back to front along the moving direction of the steel pipe, the rear end of the heat treatment core die is used for being connected with the front end of the steel pipe heat expansion core die, the diameter of the heat treatment core die is matched with the inner diameter of the steel pipe after heat expansion, a plurality of binding posts for an external power supply are arranged on the heat treatment heating coil and the steel pipe heat expansion heating coil, and two different binding posts correspond to different effective total coil turns and. The invention can perform heat treatment on the steel pipe immediately after the thermal expansion is finished, and can finish the performance adjustment of the steel pipe on line, thereby saving energy and logistics cost.
Description
Technical Field
The invention relates to the technical field of seamless steel pipe deep processing, in particular to an online steel pipe performance adjusting device and a steel pipe hot expanding and online performance adjusting process.
Background
The steel pipe hot expanding is a processing mode for processing a steel pipe with a relatively small diameter into a steel pipe with a large diameter, and at present, the steel pipe is subjected to hot expanding processing mainly by adopting a medium-frequency heating mode.
In order to improve the structure and the cutting processability of the hot-expanded steel pipe, the steel pipe after hot expansion processing sometimes needs to be subjected to heat treatment (normalizing and high-temperature annealing are two common performance adjusting treatment modes), but most steel pipe hot expansion manufacturers do not configure a heat treatment production line, and therefore, after the steel pipe is subjected to hot expansion, the steel pipe needs to be hoisted and transported to a heat treatment plant for heat treatment, and the logistics transportation cost and the heat treatment cost are high.
In addition, in the hot expanding process, the seamless steel pipe is usually heated to about 730 ℃, and when the hot expanding is finished, the temperature of the steel pipe still can reach over 700 ℃, and according to the traditional hot expanding production mode of the steel pipe, the heat is wasted and not utilized, so that the energy waste is caused.
Disclosure of Invention
The invention aims to provide an on-line steel pipe performance adjusting device and a steel pipe hot expanding and on-line performance adjusting process.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an online steel pipe performance adjusting device, is including being arranged in connecting into an organic whole with steel pipe heat expand core mould heat treatment mandrel, being used for with steel pipe heat expand heating coil establish ties integrative heat treatment heating coil and be used for carrying out the cooling device of cooling to the steel pipe after the heat treatment, steel pipe heat expand heating coil, heat treatment heating coil, cooling device set gradually outside the steel pipe from back to front along the moving direction of steel pipe, the rear end of heat treatment mandrel is used for being connected and the internal diameter after its diameter and the steel pipe heat expand core mould with the front end of steel pipe heat expand core mould suits, the front end of heat treatment mandrel is worn out from heat treatment heating coil, be provided with a plurality of terminals that are used for external power supply altogether on heat treatment heating coil and the steel pipe heat expand heating coil, two different terminals correspond different effective total turns of coil and effective total width of coil, the effective total turns of coil is for heating the steel pipe in steel pipe heat The effective total width of the coil is the total width of the coil for heating the steel pipe in the steel pipe thermal expansion heating coil and the thermal treatment heating coil, and the steel pipe thermal expansion core die and the thermal treatment core die are both made of nonmagnetic stainless steel.
Preferably, the cooling device is located in a plurality of annular members arranged around the steel pipe, and the cooling device is one or more of an air cooling device, a water mist cooling device and an air and mist mixed cooling device for cooling the steel pipe.
More preferably, the heat treatment plug passes through the cooling means and its forward end extends forward of the cooling means.
A steel pipe hot expanding and online performance adjusting process comprises the following steps:
1. and adding a heat treatment core die which is adaptive to the inner diameter size of the steel pipe after the steel pipe is subjected to hot expansion at the front end of the steel pipe hot expansion core die, and connecting the heat treatment core die and the steel pipe hot expansion core die into a whole.
2. The front end of the steel pipe thermal expansion heating coil is added with a heat treatment coil which is connected with the steel pipe thermal expansion heating coil in series, a plurality of binding posts are arranged on the steel pipe thermal expansion heating coil and the heat treatment coil, two different binding posts are guaranteed to correspond to different effective total coil turns and different effective total coil widths, the effective total coil turns are the total coil turns of the coil which heats the steel pipe in the steel pipe thermal expansion heating coil and the heat treatment heating coil, and the effective total coil width is the total coil width of the coil which heats the steel pipe in the steel pipe thermal expansion heating coil and the heat treatment heating coil.
3. A cooling device for cooling the steel pipe after heat treatment is added in front of the heat treatment coil.
4. And finally, selecting a proper external power supply of the binding post according to the set requirements of the thermal expansion temperature and the thermal treatment temperature, so that the steel pipe is subjected to thermal expansion processing on a production line firstly, and then the performance of the steel pipe is adjusted through thermal treatment, thereby realizing the thermal expansion processing and the online performance adjustment of the steel pipe on one production line.
In addition, the invention also provides a steel pipe thermal expansion and online steel pipe performance adjusting device, which comprises a steel pipe thermal expansion core die, a steel pipe thermal expansion heating coil and a displacement mechanism for pulling the steel pipe to abut against the outer peripheral surface of the steel pipe thermal expansion core die to move forwards, wherein the steel pipe thermal expansion heating coil is arranged around the steel pipe outside the steel pipe thermal expansion core die, the front end of the steel pipe thermal expansion heating coil is connected with a heat treatment heating coil in series, the front end of the steel pipe thermal expansion core die is connected with a heat treatment core die, the front end of the heat treatment core die penetrates out of the heat treatment heating coil, the diameter of the heat treatment core die is adapted to the inner diameter of the steel pipe after thermal expansion, a plurality of binding posts for external power supply are arranged on the heat treatment heating coil and the steel pipe thermal expansion heating coil, and different two binding posts correspond to different effective total coil, the effective total number of turns of the coil is the total number of turns of the coil for heating the steel pipe in the steel pipe thermal expansion heating coil and the heat treatment heating coil, the effective total width of the coil is the total width of the coil for heating the steel pipe in the steel pipe thermal expansion heating coil and the heat treatment heating coil, and the steel pipe thermal expansion core die and the heat treatment core die are both made of nonmagnetic stainless steel.
Preferably, the cooling device is located in a plurality of annular members arranged around the steel pipe, and the cooling device is one or more of an air cooling device, a water mist cooling device and an air and mist mixed cooling device for cooling the steel pipe.
More preferably, the heat treatment plug passes through the cooling means and its forward end extends forward of the cooling means.
More preferably, the steel pipe hot core expanding die and the heat treatment core die are of an integrally formed structure.
The invention has the beneficial effects that: through directly connecting heat treatment heating coil at steel pipe heat expands heating coil front end, can make heat expand to do heat treatment to the steel pipe after accomplishing immediately, thereby accomplish steel pipe performance regulation on line, like this not only make full use of heat after the heat expands and accomplishes, make the steel pipe temperature can reach normalizing temperature or other phase transition temperature fast, the saving of the energy has been realized, still saved higher logistics cost and the processing cost because of transporting to the heat treatment factory alone to a great extent simultaneously, moreover, through linking together heat expand processing and heat treatment processing with inseparable order, can avoid lengthening the production line because of independent processing separately, thereby effectively saved the space in workshop, and reduced the trouble that carries out the steel pipe transfer between the independent production line and brought.
Drawings
FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention
FIG. 2 is a schematic structural view of a steel pipe heat-expanding heating coil and a heat-treating heating coil in examples;
FIG. 3 is a schematic structural diagram of a steel pipe thermal expansion core die and a thermal treatment core die in the embodiment.
The reference signs are:
1-steel pipe hot core-expanding die 2-heat treatment core die
3-steel pipe heat expansion heating coil 4-heat treatment heating coil
5-steel pipe 6-cooling device 6 a-water pipe
6 b-spray head 7-wiring terminal.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Further, in the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not in direct contact, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.
As shown in fig. 1-3, the online steel pipe performance adjusting device comprises a heat treatment core mold 2 integrally connected with a steel pipe heat expansion core mold 1, a heat treatment heating coil 4 integrally connected with the steel pipe heat expansion heating coil 3 in series, and a cooling device 6 for cooling the steel pipe 5 after heat treatment, wherein the steel pipe heat expansion heating coil 3, the heat treatment heating coil 4, and the cooling device 6 are sequentially arranged outside the steel pipe 5 from back to front along the moving direction of the steel pipe 5, the rear end of the heat treatment core mold 2 is used for being connected with the front end of the steel pipe heat expansion core mold 1 and the diameter of the heat treatment core mold is adapted to the inner diameter of the steel pipe 5 after heat expansion, the front end of the heat treatment core mold 2 penetrates out of the heat treatment heating coil 4, the heat treatment heating coil 4 and the steel pipe heat expansion heating coil 3 are provided with a plurality of binding posts 7 for external power supply, and different two binding posts, the steel pipe thermal core expanding die 1 and the heat treatment core die 2 are both made of nonmagnetic stainless steel.
The total effective coil turns are the total number of turns of the coil for heating the steel pipe out of the steel pipe thermal expansion heating coil 3 and the heat treatment heating coil 4, and the total effective coil width is the total width of the coil for heating the steel pipe out of the steel pipe thermal expansion heating coil 3 and the heat treatment heating coil 4, where L is the total effective coil width corresponding to two terminals, as shown in fig. 2.
The on-line steel pipe performance adjusting device for the steel pipe thermal expansion production line provided by the above embodiment can be combined into the existing steel pipe thermal expansion production line, the length of the steel pipe thermal expansion core die 1 is extended by the thermal treatment core die 2, the length of the steel pipe thermal expansion heating coil 3 is extended by the thermal treatment heating coil 4, and then the cooling device 6 is arranged on the front side, because the length of the steel pipe thermal expansion heating coil 3 is extended, the heating stroke range is correspondingly increased, so that the part of the steel pipe 5 after thermal expansion is completed can be left in the heating environment for a longer time, the temperature of the steel pipe 5 after thermal expansion can be continuously increased to reach the normalizing temperature or other phase transition temperatures, and finally the heat treatment is completed by cooling, thus, the heat treatment is performed on the steel pipe 5 after thermal expansion of the steel pipe 5, the performance adjustment of the steel pipe 5 is completed on line, and thus the heat after thermal expansion is fully utilized, the energy conservation is realized, and the higher logistics cost and the processing cost generated by independently transporting the steel pipes to a heat treatment factory are saved to a great extent, so that the hot expanding processing and the heat treatment processing are connected together in a tight sequence, the production line can be prevented from being lengthened due to independent processing, the space of a production workshop is effectively saved, and the trouble caused by steel pipe transfer between independent production lines is reduced.
It should be known to those skilled in the art that the device can achieve different heat treatments to the steel pipe 5 according to the phase change temperature required when adjusting the performance of the steel pipe, specifically, two different terminals 7 can be switched on to connect different effective total turns of the coil to the current, so as to change the power of the coil, achieve the change of heat, and further heat in the corresponding effective total width of the coil, so as to control the time length of the moving process of the steel pipe 5 in the heating environment, further achieve the adjustment of the temperature of the steel pipe 5 to different temperature ranges, and allow the steel pipe 5 to perform the corresponding required phase change performance adjustment after thermal expansion.
The connection mode of the heat treatment core mold 2 and the steel pipe hot core expanding mold 1 can be a mode of welding the edges and polishing the weld marks, and of course, other connection modes such as threaded connection and the like can be used, and of course, the heat treatment core mold 2 and the steel pipe hot core expanding mold 1 can also be in an integrated structure, and a person skilled in the art has no technical obstacle to realizing the connection of the heat treatment core mold 2 and the steel pipe hot core expanding mold 1.
Preferably, the cooling device 6 is located in a plurality of annular members arranged around the steel pipe 5, and the cooling device 6 is one or more of an air cooling device, a water mist cooling device and an air and mist mixed cooling device for cooling the steel pipe. Wherein, water smoke cooling device is equipped with a plurality of shower nozzles 6b that are used for spraying water smoke towards steel pipe 5 including laying at the inside water pipe 6a of loop forming element on water pipe 6a, and air cooling device then can be the tuber pipe of setting in the loop forming element inside, and the external radiator fan then of tuber pipe. In the cooling link, specifically, usable above-mentioned structure realizes that the form of forced air cooling or water smoke is cold or the mixed cold of wind and fog cools down steel pipe 5, and of course, still can realize the adjustment control to cooling rate through the size of adjustment shower nozzle 6b blowout water smoke or through the power size of adjustment radiator fan to reach the requirement of cooling down steel pipe 5 according to different cooling rates.
More preferably, the heat treatment core mold 2 passes through the cooling device 6 and the front end thereof extends to the front of the cooling device 6, and by further extending the length of the heat treatment core mold 2, the steel pipe 5 can enter the cooling device 6 more stably to be cooled and obtain a sufficient setting effect without easily generating a concave deformation after leaving the heating environment of the heat treatment heating coil 4.
In this embodiment, the steel pipe thermal expansion core die 1 and the heat treatment core die 2 are both made of nonmagnetic stainless steel, and the steel pipe thermal expansion core die 1 and the heat treatment core die 2 are not magnetically conductive, so that the service life is not shortened due to excessive heating even in the coil for a long time.
A steel pipe hot expanding and online performance adjusting process comprises the following steps:
1. the heat treatment core mould 2 which is matched with the inner diameter size of the steel pipe after the heat expansion is added at the front end of the steel pipe heat expansion core mould 1, and the heat treatment core mould 2 and the steel pipe heat expansion core mould 1 are connected into a whole.
2. A heat treatment coil 4 connected with the steel tube heat expansion heating coil 3 in series is added at the front end of the steel tube heat expansion heating coil 3, a plurality of binding posts 7 are arranged on the steel tube heat expansion heating coil 3 and the heat treatment coil 4, and the two different binding posts correspond to different effective total coil turns and effective total coil width, wherein the effective total coil turns are the total number of turns of the coil for heating the steel tube in the steel tube heat expansion heating coil 3 and the heat treatment heating coil 4, and the effective total coil width is the total coil width for heating the steel tube in the steel tube heat expansion heating coil 3 and the heat treatment heating coil 4;
3. a cooling device 6 for cooling the steel pipe 5 after the heat treatment is added in front of the heat treatment coil 4.
4. And finally, selecting a proper external power supply of the binding post 7 according to the set requirements of the thermal expansion temperature and the heat treatment temperature, so that the steel pipe is subjected to thermal expansion processing on a production line firstly, and then the performance of the steel pipe is adjusted through heat treatment, thereby realizing the thermal expansion processing and the online performance adjustment of the steel pipe on one production line.
In addition, the embodiment also provides a steel pipe thermal expansion and on-line steel pipe performance adjusting device, which comprises a steel pipe thermal expansion core die 1, a steel pipe thermal expansion heating coil 3 and a displacement mechanism (not shown in the drawing) for pulling a steel pipe 5 to abut against the outer peripheral surface of the steel pipe thermal expansion core die 1 to move forwards, wherein the steel pipe thermal expansion heating coil 3 is arranged around the steel pipe 5 outside the steel pipe thermal expansion core die 1, a heat treatment heating coil 4 is connected in series at the front end of the steel pipe thermal expansion heating coil 3, a heat treatment core die 2 is connected at the front end of the steel pipe thermal expansion core die 1, the front end of the heat treatment core die 2 penetrates out of the heat treatment heating coil 4, the diameter of the heat treatment core die 2 is adapted to the inner diameter of the steel pipe 5 after thermal expansion, a plurality of terminals 7 for external power supply are arranged on the heat treatment heating coil 4 and the steel pipe thermal expansion heating coil 3, and different, the effective total number of turns of the coil is the total number of turns of the coil for heating the steel pipe in the steel pipe thermal expansion heating coil 3 and the heat treatment heating coil 4, the effective total width of the coil is the total width of the coil for heating the steel pipe in the steel pipe thermal expansion heating coil 3 and the heat treatment heating coil 4, and the steel pipe thermal expansion core die 1 and the heat treatment core die 2 are both made of nonmagnetic stainless steel.
The whole set of device can complete thermal expansion and thermal treatment of the steel pipe 5 on the same production line, and has wide application prospect and high practicability. In the device, the heat treatment heating coil 4 is actually connected with the steel pipe heat expansion heating coil 3 in series to form a whole, so that the current magnitude of the heat treatment heating coil and the current magnitude of the steel pipe heat expansion heating coil are consistent, and the heat treatment heating coil and the current magnitude of the steel pipe heat expansion heating coil can be connected into the same controller and the same power supply, so that the controller can realize the adjustment of the whole electromagnetic coil heating environment only by controlling the current magnitude and selecting two binding posts 7 to conduct electricity.
It should be understood by those skilled in the art that the above controller may be a commercially available controller, and the control procedure required for controlling the current of the steel tube hot-expanding heating coil 3 and the on/off of each terminal 7 is also a simple prior art, and can be easily implemented by those skilled in the art, and the improvement point of the present invention is not described here, and therefore, will not be described in detail. In the specific processing process, an oil cylinder can be arranged at the rear end of the steel pipe 5 to push the steel pipe 5 to move forwards, so that the oil cylinder can stop working after the front part of the steel pipe 5 is reamed and moves forwards for a certain distance and is connected with the drawing mechanism.
The displacement mechanism may be a drawing machine that is commonly used in the steel pipe 5 processing industry, and it is only necessary to pull the tip of the steel pipe 5 and move the steel pipe 5 along the axis.
Preferably, the steel pipe hot expanding core die 1 and the heat treatment core die 2 are of an integral molding structure, so that the processing, molding and manufacturing are convenient, and the structural strength is also ideal.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (8)
1. On-line steel pipe performance adjusting device, its characterized in that: the device comprises a heat treatment core die (2) which is connected with a steel pipe heat expansion core die (1) into a whole, a heat treatment heating coil (4) which is connected with the steel pipe heat expansion heating coil (3) into a whole in series and a cooling device (6) which is used for cooling the steel pipe (5) after heat treatment, wherein the steel pipe heat expansion heating coil (3), the heat treatment heating coil (4) and the cooling device (6) are sequentially arranged outside the steel pipe (5) from back to front along the moving direction of the steel pipe (5), the rear end of the heat treatment core die (2) is used for being connected with the front end of the steel pipe heat expansion core die (1), the diameter of the heat treatment core die is matched with the inner diameter of the steel pipe (5) after heat expansion, the front end of the heat treatment core die (2) penetrates out of the heat treatment core die (4), and a plurality of binding posts (7) which are used for an external power supply are arranged on the, the two different terminals correspond to different effective total coil turns and effective total coil width, the effective total coil turns are total turns of coils for heating the steel pipe in the steel pipe thermal expansion heating coil (3) and the thermal treatment heating coil (4), the effective total coil width is the total width of the coils for heating the steel pipe in the steel pipe thermal expansion heating coil (3) and the thermal treatment heating coil (4), and the steel pipe thermal expansion core die (1) and the thermal treatment core die (2) are both made of nonmagnetic stainless steel.
2. The on-line steel pipe performance adjusting apparatus according to claim 1, characterized in that: the cooling device (6) is positioned in a plurality of annular pieces arranged around the steel pipe (5), and the cooling device (6) is one or more of an air cooling device, a water mist cooling device and an air mist mixing cooling device for cooling the steel pipe.
3. The on-line steel pipe performance adjusting apparatus according to claim 2, characterized in that: the heat treatment core mold (2) passes through the cooling device (6) and the front end of the heat treatment core mold extends to the front of the cooling device (6).
4. A steel pipe hot expanding and online performance adjusting process is characterized in that:
1. adding a heat treatment core die (2) which is adaptive to the inner diameter size of the steel pipe after hot expansion at the front end of the steel pipe hot expansion core die (1) and connecting the heat treatment core die (2) and the steel pipe hot expansion core die (1) into a whole;
2. a heat treatment coil (4) connected with the steel tube heat expansion heating coil (3) in series is added at the front end of the steel tube heat expansion heating coil (3), a plurality of binding posts (7) are arranged on the steel tube heat expansion heating coil (3) and the heat treatment coil (4) in series, and the two different binding posts are ensured to correspond to different effective total coil turns and effective total coil width, wherein the effective total coil turns are the total coil turns of the coil for heating the steel tube in the steel tube heat expansion heating coil (3) and the heat treatment heating coil (4), and the effective total coil width is the total coil width of the coil for heating the steel tube in the steel tube heat expansion heating coil (3) and the heat treatment heating coil (4);
3. a cooling device (6) for cooling the steel pipe (5) after heat treatment is added in front of the heat treatment coil (4);
4. and finally, selecting a proper wiring terminal (7) external power supply according to the set requirements of the thermal expansion temperature and the thermal treatment temperature, so that the steel pipe is subjected to thermal expansion processing on a production line firstly, and then the performance of the steel pipe is adjusted through thermal treatment, thereby realizing the thermal expansion processing and the online performance adjustment of the steel pipe on one production line.
5. Steel pipe hot expands and online steel pipe performance adjusting device, expand core mould (1), steel pipe hot expands heating coil (3) and be used for pulling steel pipe (5) and support the displacement mechanism that leans on steel pipe hot core mould (1) outer peripheral face forward movement, its characterized in that: the steel pipe hot-expanding heating coil (3) is arranged around a steel pipe (5) outside the steel pipe hot-expanding core die (1), the front end of the steel pipe hot-expanding heating coil (3) is connected with a heat treatment heating coil (4) in series, the front end of the steel pipe hot-expanding core die (1) is connected with a heat treatment core die (2), the front end of the heat treatment core die (2) penetrates out of the heat treatment heating coil (4), the diameter of the heat treatment core die (2) is matched with the inner diameter of the steel pipe (5) after hot expansion, the heat treatment heating coil (4) and the steel pipe hot-expanding heating coil (3) are provided with a plurality of binding posts (7) for an external power supply together, two different binding posts correspond to different effective total coil turns and effective total coil width, and the effective total coil turns are the total coil turns of the steel pipe hot-expanding heating coil (3) and the coil for heating the steel pipe in the heat, the effective total width of the coil is the total width of the coil for heating the steel pipe in the steel pipe thermal expansion heating coil (3) and the heat treatment heating coil (4), and the steel pipe thermal expansion core die (1) and the heat treatment core die (2) are both made of nonmagnetic stainless steel.
6. The steel pipe hot expanding and on-line steel pipe performance adjusting device according to claim 5, characterized in that: the cooling device (6) is positioned in a plurality of annular pieces arranged around the steel pipe (5), and the cooling device (6) is one or more of an air cooling device, a water mist cooling device and an air mist mixing cooling device for cooling the steel pipe.
7. The steel pipe hot expanding and on-line steel pipe performance adjusting device according to claim 5, characterized in that: the heat treatment core mold (2) passes through the cooling device (6) and the front end of the heat treatment core mold extends to the front of the cooling device (6).
8. The steel pipe hot expanding and on-line steel pipe performance adjusting device according to claim 5, characterized in that: the steel pipe hot core expanding die (1) and the heat treatment core die (2) are of an integrated forming structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110115181.2A CN112872207B (en) | 2021-01-28 | 2021-01-28 | Online steel pipe performance adjusting device and steel pipe hot expanding and online performance adjusting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110115181.2A CN112872207B (en) | 2021-01-28 | 2021-01-28 | Online steel pipe performance adjusting device and steel pipe hot expanding and online performance adjusting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112872207A true CN112872207A (en) | 2021-06-01 |
| CN112872207B CN112872207B (en) | 2023-03-21 |
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|---|---|---|---|
| CN202110115181.2A Active CN112872207B (en) | 2021-01-28 | 2021-01-28 | Online steel pipe performance adjusting device and steel pipe hot expanding and online performance adjusting process |
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| Country | Link |
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| CN (1) | CN112872207B (en) |
Cited By (1)
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| CN114350920A (en) * | 2022-03-18 | 2022-04-15 | 南通铁人运动用品有限公司 | Equipment and production process for improving flaring bending deformation resistance of metal pipe |
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|---|---|
| CN112872207B (en) | 2023-03-21 |
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