WO2019189158A1 - 継目無鋼管熱処理精整処理直結設備 - Google Patents
継目無鋼管熱処理精整処理直結設備 Download PDFInfo
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- WO2019189158A1 WO2019189158A1 PCT/JP2019/012820 JP2019012820W WO2019189158A1 WO 2019189158 A1 WO2019189158 A1 WO 2019189158A1 JP 2019012820 W JP2019012820 W JP 2019012820W WO 2019189158 A1 WO2019189158 A1 WO 2019189158A1
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- Prior art keywords
- steel pipe
- heat treatment
- seamless steel
- seamless
- direct connection
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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
- C21D9/085—Cooling or quenching
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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
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
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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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
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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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
Definitions
- the present invention relates to a facility for performing heat treatment and finishing treatment of a seamless steel pipe, and more specifically, a seamless steel pipe heat treatment conditioning processing direct connection facility capable of continuously performing the heat treatment step and the finishing treatment step of the seamless steel pipe.
- a seamless steel pipe heat treatment conditioning processing direct connection facility capable of continuously performing the heat treatment step and the finishing treatment step of the seamless steel pipe.
- Seamless steel pipe manufacturing equipment includes pipe making line equipment, heat treatment equipment, and finishing line equipment.
- the pipe making line equipment is equipment for producing seamless steel pipes
- the pipe making line equipment is, for example, in order from upstream to downstream, to a piercing rolling mill, a drawing rolling mill represented by a mandrel mill, a sizer, and a reducer.
- a typical constant-diameter rolling mill is provided, and a transport mechanism (such as a transport table) for transporting a round billet or a hollow shell is provided between the apparatuses.
- a round billet is pierced and rolled by a piercing and rolling machine to produce a raw pipe.
- the produced raw tube is stretched and rolled by a stretching mill.
- constant diameter rolling is performed on the drawn and rolled raw pipe by a constant diameter rolling mill to produce a seamless steel pipe having a final outer diameter and a wall thickness.
- the heat treatment facility is a facility that performs heat treatment on seamless steel pipes manufactured by the pipe making line facility.
- the heat treatment includes, for example, a quenching process, a tempering process, and an annealing process.
- the heat treatment facility includes a heat treatment apparatus represented by a heat treatment furnace.
- the finishing line equipment performs the finishing process on the seamless steel pipe after the heat treatment.
- the finishing line equipment includes, for example, a steel pipe bending straightening device and a steel pipe inspection device in order from upstream to downstream.
- the bending of the seamless steel pipe after the heat treatment is corrected as necessary using a steel pipe bending correction apparatus.
- a surface defect and / or an internal defect of the seamless steel pipe is detected using a steel pipe inspection device.
- the steel pipe inspection apparatus is, for example, an ultrasonic inspection apparatus, a magnetic inspection apparatus, a penetrating inspection apparatus, an eddy current inspection apparatus, or a radiation inspection apparatus.
- the heat treatment apparatus in the heat treatment equipment and the finishing line equipment were not directly connected by a transport mechanism such as a transport table. That is, the heat treatment apparatus is so-called off-line arrangement with respect to the finishing line equipment. Therefore, for example, the seamless steel pipe that has been heat-treated in the heat treatment facility is once stored in a temporary storage place, and after a predetermined period of time, it is unloaded from the temporary storage place and supplied to the finishing line facility.
- the heat treatment apparatus when the heat treatment apparatus is not directly connected to the finishing line equipment, so-called offline, it is difficult to shorten the production time (lead time) of the seamless steel pipe.
- the history information (traceability) of the seamless steel pipe when the heat treatment equipment is not directly connected to the finishing line equipment, the history information (traceability) of the seamless steel pipe must be managed for the seamless steel pipe that has been removed from the heat treatment equipment and stored in the temporary storage location. I must. This is because, when the refining process is started for the steel pipe once stored in the temporary storage place, it is necessary to find the storage place of the seamless steel pipe to be refined using the history information. Such traceability management is reduced if the heat treatment apparatus is directly connected to the finishing line equipment.
- Patent Document 1 a steel pipe manufacturing facility in which a heat treatment apparatus is directly connected to a finishing processing line facility is proposed in International Publication No. 2011-118681 (Patent Document 1).
- the heat treatment and the finishing process can be performed continuously, so that the manufacturing period (lead time) of the steel pipe can be shortened.
- the facility layout of the factory tends to be large.
- An object of the present disclosure is to provide a seamless steel pipe heat treatment straightening treatment direct connection facility capable of suppressing an increase in the size of the equipment layout even when the heat treatment apparatus for seamless steel pipe and the straightening treatment line equipment are directly connected. That is.
- the seamless steel pipe heat treatment refining treatment direct connection facility includes a heat treatment apparatus, a steel pipe inspection apparatus, a main transport mechanism, and a first steel pipe temperature forced lowering apparatus.
- the heat treatment apparatus can be charged with a seamless steel pipe, and heat treatment can be performed on the charged seamless steel pipe.
- the steel pipe inspection apparatus is arranged downstream of the heat treatment apparatus, and detects surface defects and / or internal defects of the seamless steel pipe extracted from the heat treatment apparatus and conveyed.
- the main transport mechanism constitutes a main transport path for transporting the seamless steel pipe extracted from the heat treatment apparatus to a steel pipe inspection apparatus arranged downstream of the heat treatment apparatus, and a plurality of transports for transporting the seamless steel pipe A member is provided.
- the first steel pipe temperature forced lowering device is disposed on the main conveyance path downstream of the heat treatment apparatus and upstream of the steel pipe inspection apparatus, and forcibly reduces the temperature of the seamless steel pipe on the main conveyance path.
- the seamless steel pipe heat treatment and finishing direct connection facility according to the present disclosure can suppress an increase in the size of the equipment layout even when the seamless steel pipe heat treatment device and the finishing line equipment are directly connected.
- FIG. 1 is a functional block diagram showing an equipment line of a seamless steel pipe heat treatment finishing treatment direct connection facility according to the first embodiment.
- FIG. 2 is a functional block diagram showing an equipment line of a seamless steel pipe heat treatment finishing treatment direct connection facility according to the second embodiment.
- FIG. 3 is a functional block diagram showing an equipment line of a seamless steel pipe heat treatment finishing treatment direct connection facility according to the third embodiment.
- FIG. 4 is a functional block diagram showing an equipment line of a seamless steel pipe heat treatment finishing treatment direct connection facility according to the fourth embodiment.
- FIG. 5: A is a functional block diagram which shows the equipment line of the seamless steel pipe heat treatment finishing process direct connection equipment by 5th Embodiment.
- FIG. 5 A is a functional block diagram which shows the equipment line of the seamless steel pipe heat treatment finishing process direct connection equipment by 5th Embodiment.
- FIG. 5B is a functional block diagram showing an equipment line of a seamless steel pipe heat treatment refining treatment direct connection facility according to the fifth embodiment, which is different from FIG. 5A.
- FIG. 6A is a functional block diagram illustrating an example of an equipment line of a seamless steel pipe heat treatment and refinement processing direct connection facility according to the sixth embodiment.
- FIG. 6B is a functional block diagram showing an example of an equipment line of a seamless steel pipe heat treatment refining treatment direct connection facility according to the sixth embodiment, which is different from FIG. 6A.
- FIG. 6C is a functional block diagram showing an example of the equipment line of the seamless steel pipe heat treatment refining treatment direct connection facility according to the sixth embodiment, which is different from FIGS. 6A and 6B.
- FIG. 6D is a functional block diagram showing an example of the equipment line of the seamless steel pipe heat treatment refining treatment direct connection facility according to the sixth embodiment, which is different from FIGS. 6A to 6C.
- FIG. 6E is a functional block diagram showing an example of the equipment line of the seamless steel pipe heat treatment refining treatment direct connection facility according to the sixth embodiment, which is different from FIGS. 6A to 6D.
- FIG. 6F is a functional block diagram showing an example of the equipment line of the seamless steel pipe heat treatment refining treatment direct connection facility according to the sixth embodiment, which is different from FIGS. 6A to 6E.
- FIG. 6G is a functional block diagram showing an example of the equipment line of the seamless steel pipe heat treatment refining treatment direct connection facility according to the sixth embodiment, which is different from FIGS.
- FIG. 6H is a functional block diagram showing an example of the equipment line of the seamless steel pipe heat treatment refining treatment direct connection facility according to the sixth embodiment, which is different from FIGS. 6A to 6G.
- FIG. 6I is a functional block diagram showing an example of an equipment line of a seamless steel pipe heat treatment refining treatment direct connection facility according to the sixth embodiment, which is different from FIGS. 6A to 6H.
- FIG. 6J is a functional block diagram showing an example of an equipment line of a seamless steel pipe heat treatment refining treatment direct connection facility according to the sixth embodiment, which is different from FIGS. 6A to 6I.
- FIG. 7 is a functional block diagram showing an example of an equipment line of another seamless steel pipe heat treatment refining treatment direct connection facility different from FIGS. 1 to 6J.
- the inventors of the present invention first examined the equipment layout in which the finishing line equipment is arranged downstream of the seamless steel pipe heat treatment equipment and the heat treatment equipment and the finishing treatment line equipment are connected by a transport mechanism. As a result, it was thought that the increase in the size of the equipment layout could be suppressed by shortening the transportation path that is composed of the transportation mechanism and reaches the finishing line equipment from the heat treatment apparatus.
- the seamless steel pipe is held at a predetermined temperature (heat treatment temperature).
- the heat treatment temperature may be less than the A C1 transformation point and may be 500 ° C. or higher, depending on the steel type, size, and wall thickness of the seamless steel pipe. Therefore, the seamless steel pipe immediately after being extracted from the heat treatment apparatus is in a high temperature state.
- the finishing line equipment is intended for seamless steel pipes at room temperature.
- Equipment exists.
- a steel pipe inspection apparatus represented by an ultrasonic flaw inspection apparatus and a magnetic flaw inspection apparatus, a chamfering apparatus for a steel pipe end surface, a steel pipe cutting machine, and the like are intended for seamless steel pipes having a temperature of about 100 ° C. from room temperature.
- the probe of the steel pipe inspection device may be damaged. Therefore, when connecting the heat treatment equipment with the finishing line equipment and the transport mechanism, the temperature of the seamless steel pipe is sufficiently lowered before the seamless steel pipe extracted from the heat treatment equipment is supplied into the finishing equipment. It is necessary to let
- the temperature of the seamless steel pipe will be sufficiently lowered before the seamless steel pipe extracted from the heat treatment equipment is supplied to the finishing line equipment. Can be made. However, in this case, the equipment layout becomes large.
- the present inventors suppress the length of the conveyance path from the heat treatment device to the steel pipe inspection device having a large influence of heat in the finishing line equipment, while the steel pipe inspection device is affected by the heat of the steel pipe.
- a steel pipe temperature forced lowering device that forcibly lowers the temperature of the steel pipe, represented by a water cooling device, is disposed on the conveying path connecting the heat treatment device and the steel pipe inspection device in the finishing line equipment. It is possible to sufficiently reduce the temperature of the seamless steel pipe before the seamless steel pipe extracted from the heat treatment apparatus is supplied to the steel pipe inspection apparatus while suppressing the length of the conveyance path from the apparatus to the steel pipe inspection apparatus. I found out that I can do it.
- the temperature forced lowering device is arranged between the heat treatment device and the steel pipe inspection device, the steel pipe temperature forced lowering device is not operated for the thin-walled steel pipe, or the seamless steel pipe If the steel pipe temperature forced lowering device is used with a lower temperature drop rate than that for thick-walled steel pipes, it should be sufficiently applicable even if the thick-walled steel pipes and thin-walled steel pipes flow through the same equipment line.
- the present inventors have noticed.
- the seamless steel pipe heat treatment refining treatment direct connection equipment according to this embodiment completed based on the above technical idea has the following configuration.
- the seamless steel pipe heat treatment refining treatment direct connection facility includes a heat treatment apparatus, a steel pipe inspection apparatus, a main transfer mechanism, and a first steel pipe temperature forced lowering apparatus.
- the heat treatment apparatus can be charged with a seamless steel pipe, and heat treatment can be performed on the charged seamless steel pipe.
- the steel pipe inspection apparatus is arranged downstream of the heat treatment apparatus, and detects surface defects and / or internal defects of the seamless steel pipe extracted from the heat treatment apparatus and conveyed.
- the main transport mechanism constitutes a main transport path for transporting the seamless steel pipe extracted from the heat treatment apparatus to a steel pipe inspection apparatus arranged downstream of the heat treatment apparatus, and a plurality of transports for transporting the seamless steel pipe A member is provided.
- the first steel pipe temperature forced lowering device is disposed on the main conveyance path downstream of the heat treatment apparatus and upstream of the steel pipe inspection apparatus, and forcibly reduces the temperature of the seamless steel pipe on the main conveyance path.
- a seamless steel pipe means a steel pipe in which no weld is formed, unlike a weld pipe in which a weld is formed.
- the shape of the cross section perpendicular to the longitudinal direction of the seamless steel pipe is circular.
- the seamless steel pipe heat treatment refining treatment direct connection facility having the configuration of (1) may further include a steel pipe bending straightening device.
- the steel pipe bending correction device is disposed on the main conveyance path downstream of the heat treatment device and upstream of the first steel pipe temperature forced lowering device, and corrects the bending of the seamless steel pipe.
- the seamless steel pipe heat treatment refining treatment direct connection equipment having the configuration of (1) may further include a steel pipe bending straightening device.
- the steel pipe bending straightening device is disposed on the main conveyance path downstream of the first steel pipe temperature forced lowering device and upstream of the steel pipe inspection device, and corrects the bending of the seamless steel pipe.
- the seamless steel pipe heat treatment refining treatment direct connection equipment having the configuration of (4) and (2) may further include a second steel pipe temperature forced lowering device.
- the second steel pipe temperature forced lowering device is disposed on the main conveyance path downstream of the heat treatment apparatus and upstream of the steel pipe bending straightening apparatus, and forcibly reduces the temperature of the seamless steel pipe on the main conveyance path.
- the seamless steel pipe heat treatment refining treatment direct connection facility having the configuration of (5) and (2) may further include a sub-transport mechanism and a second steel pipe temperature forced lowering device.
- the sub transport mechanism is disposed downstream of the heat treatment apparatus and upstream of the steel pipe bending straightening apparatus, and is connected to the heat treatment apparatus or the main transport mechanism, and has a sub transport path that is a transport path different from the main transport path. It comprises and comprises a plurality of conveying members for conveying the seamless steel pipe.
- the second steel pipe temperature forced lowering device is arranged on the sub transport path and forcibly reduces the temperature of the seamless steel pipe on the sub transport path.
- the sub transport mechanism may be connected to the main transport mechanism.
- the sub conveyance path is configured to branch from the main conveyance path, and the sub conveyance mechanism conveys the seamless steel pipe conveyed on the main conveyance path on the sub conveyance path.
- Seamless steel pipe heat treatment refining treatment direct connection equipment having the configuration of (5), and the sub-transport mechanism may be connected to the heat treatment apparatus.
- the sub transport mechanism transports the seamless steel pipe extracted from the heat treatment apparatus and not transported to the main transport path through the sub transport path.
- the seamless steel pipe heat treatment refining treatment direct connection facility having any one of the configurations of (2) to (7) may further include a constant diameter rolling mill.
- the constant diameter rolling mill is disposed on the main conveyance path upstream or downstream of the steel pipe bending straightening device and next to the steel pipe bending straightening device.
- FIG. 1 is a functional block diagram showing an equipment line of a seamless steel pipe heat treatment refining treatment direct connection facility according to this embodiment.
- the seamless steel pipe heat treatment and refining treatment direct connection facility 1 is a facility line capable of continuously performing heat treatment and refining treatment of seamless steel pipes.
- the seamless steel pipe may be used for oil wells and gas wells (hereinafter, oil wells and gas wells are collectively referred to as “oil wells”), or for machine structural parts represented by automobile parts. May be.
- the steel type of the seamless steel pipe is not particularly limited.
- a seamless steel pipe heat treatment refining treatment direct connection facility 1 includes a heat treatment device 10 and a steel pipe inspection device 30 in order from the upstream to the downstream of the equipment line.
- the heat treatment apparatus 10 can be charged with seamless steel pipes, and performs heat treatment on the charged seamless steel pipes.
- the heat treatment apparatus 10 can perform a tempering process.
- the heat treatment apparatus 10 may also perform an annealing process.
- the heat processing apparatus 10 in this specification does not target quenching processing.
- the heat treatment apparatus 10 may be, for example, a combustion furnace that burns fuel such as heavy oil or gas to heat the seamless steel pipe, or an electric heat treatment furnace that heats the seamless steel pipe.
- the electric heat treatment furnace is, for example, a high-frequency induction heating device, an electric heating device, or the like.
- the heat treatment apparatus may be a batch type or a continuous type.
- the continuous heat treatment furnace is, for example, a rotary hearth heat treatment furnace.
- the steel pipe inspection device 30 detects surface defects (outer surface defects and inner surface defects) and / or internal defects of seamless steel pipes.
- the steel pipe inspection device 30 is, for example, an ultrasonic inspection device, a magnetic inspection device, a penetrating inspection device, an eddy current inspection device, or a radiation inspection device.
- Examples of the magnetic flaw inspection apparatus include a leakage magnetic flux inspection apparatus and a magnetic particle inspection apparatus.
- the steel pipe inspection device 30 is intended to detect surface defects and / or internal defects of a seamless steel pipe at room temperature. Therefore, if flaw detection is performed on a seamless steel pipe exceeding 100 ° C., some members of the steel pipe inspection device 30 may fail or the flaw detection accuracy may be reduced. Therefore, the surface temperature of the seamless steel pipe supplied to the steel pipe inspection apparatus 30 is preferably 100 ° C. or less.
- the main transport mechanism 100 constitutes a main transport path MT from the heat treatment apparatus 10 to the steel pipe inspection apparatus 30 disposed downstream of the heat treatment apparatus 10.
- the main transport mechanism 100 transports the heat-treated seamless steel pipe to the steel pipe inspection apparatus 30 through the main transport path MT.
- the main transport mechanism 100 includes a plurality of transport members for transporting the seamless steel pipe in the main transport path MT.
- the plurality of transport members are, for example, a plurality of transport rollers arranged from upstream to downstream.
- the plurality of conveying members of the main conveying mechanism 100 are not limited to the plurality of conveying rollers arranged from the upstream side to the downstream side of the seamless steel pipe heat treatment refining processing direct connection facility 1.
- the plurality of transport members of the main transport mechanism 100 may be, for example, a plurality of transport chains capable of transporting seamless steel pipes from upstream to downstream of the seamless steel pipe heat treatment finishing treatment direct connection facility 1, or a plurality of walking beams There may be.
- the plurality of transport members of the main transport mechanism 100 may transport the seamless steel pipe from upstream to downstream of the seamless steel pipe heat treatment refining treatment direct connection facility 1 by a mechanism other than the roller, the chain, and the walking beam.
- the plurality of conveying members are disposed below the seamless steel pipe to which at least a part is conveyed, and contact the lower part of the conveyed seamless steel pipe to convey the seamless steel pipe downstream.
- the seamless steel pipe heat treatment refining treatment direct connection facility 1 further includes a carry-out table 500 downstream of the steel pipe inspection device 30.
- the carry-out table 500 is connected to the upstream steel pipe inspection device 30 by the main transport mechanism 100. That is, the carry-out table 500 is arranged on the main transport path MT.
- the carry-out table 500 is a table for temporarily storing the seamless steel pipe detected by the steel pipe inspection device 30 before moving it to another place.
- the seamless steel pipe temporarily stored in the unloading table 500 is unloaded from the unloading table 500 by, for example, a crane, and other than the temporary storage place such as a rack or the seamless steel pipe heat treatment refining processing direct connection equipment 1 To the equipment line.
- other equipment for example, a refining device other than the steel pipe inspection device 30
- seamless steel pipe heat treatment refining treatment direct connection facility 1 further includes a first steel pipe temperature forced lowering device 20A.
- 20 A of 1st steel pipe temperature forced fall apparatuses are arrange
- the first steel pipe temperature forced lowering device 20A forcibly reduces the temperature of the seamless steel pipe extracted from the heat treatment device 10.
- “forcibly reducing the temperature of the seamless steel pipe” means that the temperature of the seamless steel pipe is reduced at a cooling rate faster than that of allowing to cool.
- the configuration of the first steel pipe temperature forced lowering device 20A is not particularly limited as long as the temperature of the seamless steel pipe extracted from the heat treatment device 10 can be forcibly lowered.
- the first steel pipe temperature forced lowering device 20A forcibly reduces the temperature of the seamless steel pipe by bringing the cooling fluid into contact with the outer surface and / or the inner surface of the seamless steel pipe.
- the first steel pipe temperature forced lowering device 20A includes a temperature forced lowering mechanism that forcibly lowers the temperature of the seamless steel pipe using a cooling fluid.
- the cooling fluid is, for example, a cooling liquid such as water or oil, a cooling gas such as air or an inert gas, a mixed fluid of a cooling liquid and a cooling gas, or the like.
- the cooling liquid used for the temperature forced lowering mechanism may be one type or two or more types. 1 type of cooling gas utilized for a temperature forced fall mechanism may be sufficient, and 2 or more types may be sufficient as it.
- the temperature forcing reduction mechanism preferably injects water onto the surface (outer surface and / or inner surface) of the seamless steel pipe.
- the preferred first steel pipe temperature forced lowering device 20A is a water cooling device.
- the average cooling rate for the seamless steel pipe is, for example, 4 to 100 ° C./second.
- the first steel pipe temperature forced lowering device 20A also includes a storage tank that stores the cooling fluid without having the temperature forced lowering mechanism that injects the cooling fluid onto the outer surface and / or the inner surface of the seamless steel pipe as described above. Also good. In this case, the first steel pipe temperature forced lowering device 20A forcibly lowers the temperature of the seamless steel pipe by immersing the seamless steel pipe in the cooling fluid in the storage tank.
- the first steel pipe temperature forced lowering device 20A may include the storage tank and the temperature forced lowering mechanism.
- the first steel pipe temperature forced lowering device 20A can be configured if the temperature of the seamless steel pipe can be forcibly lowered by bringing the cooling fluid into contact with the outer surface and / or the inner surface of the seamless steel pipe. Is not particularly limited.
- the seamless steel pipe heat treatment finishing treatment direct connection facility 1 of the present embodiment connects the heat treatment device 10 and the steel pipe inspection device 30 included in the finishing treatment line facility by the main transport mechanism 100. That is, unlike the conventional factory equipment layout in which the heat treatment apparatus 10 and the finishing line equipment are arranged offline, the heat treatment apparatus 10 and the finishing line equipment are arranged online. Therefore, compared with the case where it is offline, the seamless steel pipe extracted from the heat processing apparatus 10 can be rapidly conveyed to the steel pipe inspection apparatus 30, and the manufacturing period (lead time) of a seamless steel pipe can be shortened.
- the temperature of the seamless steel pipe extracted from the heat treatment apparatus 10 is supplied to the steel pipe inspection apparatus 30 with the temperature being high.
- a part of the steel pipe inspection device 30 may fail due to the heat of the seamless steel pipe, or the flaw detection accuracy may decrease.
- the first steel pipe temperature forced lowering device 20A is disposed on the main conveyance path MT between the heat treatment apparatus 10 and the steel pipe inspection apparatus 30.
- the temperature of the seamless steel pipe extracted from the heat treatment apparatus 10 is forcibly reduced by the first steel pipe temperature forced reduction device 20A upstream of the steel pipe inspection device 30. Therefore, the temperature of the seamless steel pipe supplied to the steel pipe inspection device 30 can be significantly reduced as compared with the case where the first steel pipe temperature forced lowering device 20A is not disposed.
- the length of the main transport path MT from the heat treatment device 10 to the steel pipe inspection device 30 can be shortened, and the size of the equipment layout can be suppressed and made compact.
- the seamless steel pipe heat treatment and conditioning direct connection facility 1 is particularly suitable for heat treatment and conditioning of a thick steel pipe having a wall thickness of 10.0 mm or more among seamless steel pipes. If the first steel pipe temperature forced lowering device 20A is applied to a thin-walled seamless steel pipe having a wall thickness of less than 10.0 mm, the temperature of the seamless steel pipe is locally reduced with respect to the entire steel pipe, and the seamless The steel pipe may be bent. On the other hand, in the case of a thick steel pipe having a wall thickness of 10.0 mm or more, even if the cooling liquid of the first steel pipe temperature forced lowering device 20A is water, bending is unlikely to occur.
- the seamless steel pipe heat treatment and conditioning direct connection facility 1 described above is particularly suitable for heat treatment and conditioning of a thick steel pipe having a thickness of 10.0 mm or more, and more preferably a thickness of 15.0 mm or more. Suitable for heat treatment and finishing of meat steel pipes.
- the wall thickness is less than 10.0 mm by adjusting the cooling capacity of the first steel pipe temperature forced lowering device 20A by changing the cooling fluid of the first steel pipe temperature forced lowering device 20A to a cooling gas or a mixed fluid.
- This thin-walled steel pipe can also be applied with the seamless steel pipe heat treatment refining treatment direct connection facility 1 of the present embodiment.
- the manufacturing method of the seamless steel pipe using the seamless steel pipe heat treatment refining treatment direct connection equipment 1 is as follows. First, the seamless steel pipe is inserted into the heat treatment apparatus 10 to perform heat treatment on the seamless steel pipe.
- the heat treatment is, for example, a tempering process or an annealing process.
- the heat treatment apparatus 10 performs a tempering process.
- the heat treatment temperature in the heat treatment apparatus 10 is lower than the A C1 transformation point.
- the lower limit of the heat treatment temperature when the heat treatment apparatus 10 performs the tempering treatment is, for example, 500 ° C. or more, and more preferably 600 ° C. or more.
- the seamless steel pipe held for a predetermined time at the heat treatment temperature is extracted from the heat treatment apparatus 10.
- the extracted seamless steel pipe is transported downstream in the main transport path MT using the main transport mechanism 100.
- the main transport mechanism 100 supplies the heat-treated seamless steel pipe to the first steel pipe temperature forced lowering device 20A.
- the cooling fluid is brought into contact with the surface of the seamless steel pipe to forcibly reduce the temperature of the seamless steel pipe over the entire length of the steel pipe.
- the first steel pipe temperature forced lowering device 20A has a temperature forced lowering mechanism for injecting a cooling fluid to the outer surface and / or the inner surface of the seamless steel pipe
- the first steel pipe temperature forced lowering device 20A is a steel pipe formed by the main transport mechanism 100.
- the cooling fluid may be jetted to the entire seamless steel pipe by a temperature forced reduction mechanism to forcibly reduce the seamless steel pipe temperature.
- the cooling fluid is continuously injected onto the surface of the moving seamless steel pipe by the temperature forcible reduction mechanism to forcibly reduce the seamless steel pipe temperature. You may let them.
- the first steel pipe temperature forced lowering device 20A temporarily stops the conveyance of the seamless steel pipe, and then injects the cooling fluid not only on the outer surface of the seamless steel pipe but also on the inner surface of the seamless steel pipe.
- the seamless steel pipe temperature may be forcibly lowered from the outer surface and the inner surface.
- the first steel pipe temperature forced lowering device 20A When the first steel pipe temperature forced lowering device 20A includes a storage tank that stores the cooling fluid, the first steel pipe temperature forced lowering device 20A immerses the seamless steel pipe in the cooling fluid in the storage tank, and the seamless steel pipe temperature. May be forcibly lowered.
- the first steel pipe temperature forced lowering device 20A includes a temperature forced lowering mechanism and a storage tank, the first steel pipe temperature forced lowering device 20A further immerses the seamless steel pipe in the cooling fluid in the storage tank, The cooling fluid may be jetted toward the outer surface and / or the inner surface of the steelless pipe to forcibly reduce the temperature of the seamless steel pipe.
- the treatment time in the first steel pipe temperature forced lowering device 20A and the temperature forced lowering ability can be appropriately set according to the outer diameter, thickness, and steel type of the seamless steel pipe. For example, if the seamless steel pipe is a thick steel pipe of 10.0 mm or more, the first steel pipe temperature forced lowering device 20A may forcibly reduce the seamless steel pipe temperature using the cooling fluid as water. Further, when the outer diameter of the seamless steel pipe is large and the wall thickness is thick, the processing time in the first steel pipe temperature forced lowering device 20A is compared with the case where the outer diameter of the seamless steel pipe is small or the wall thickness is thin. Thus, the length may be set appropriately.
- the seamless steel pipe whose temperature has been forcibly lowered by the first steel pipe temperature forced lowering device 20 ⁇ / b> A is transported downstream on the main transport path MT by the main transport mechanism 100 and supplied to the steel pipe inspection device 30.
- the steel pipe inspection apparatus 30 can perform a surface defect and / or internal defect inspection for the seamless steel pipe whose temperature has been forcibly lowered. Therefore, the failure of the member which comprises the steel pipe inspection apparatus 30 resulting from the temperature of a seamless steel pipe being too high, and the fall of flaw detection accuracy can be suppressed.
- the seamless steel pipe detected by the steel pipe inspection device 30 is transported to the carry-out table 500 disposed downstream of the steel pipe inspection device 30 and temporarily stored on the carry-out table 500.
- the seamless steel pipe temporarily stored in the carry-out table 500 is carried out from the carry-out table 500 to other equipment or the like, for example, by a crane or the like.
- the steel pipe inspection device can be used without the first steel pipe temperature compulsory lowering device 20A from the heat treatment device 10 until the steel pipe inspection device 30 is extracted.
- the temperature may drop to the extent that 30 can handle it.
- the first steel pipe temperature forced lowering device 20A may not be used.
- the seamless steel pipe extracted from the heat treatment apparatus 10 is transported to the first steel pipe temperature forced lowering apparatus 20A by the main transport mechanism 100, and then the seam without performing the processing in the first steel pipe temperature forced lowering apparatus 20A. It is sufficient to pass the steelless pipe from upstream to downstream of the first steel pipe temperature forced lowering device 20A.
- FIG. 2 is a functional block diagram showing an equipment line of a seamless steel pipe heat treatment finishing treatment direct connection facility according to the second embodiment.
- the seamless steel pipe heat treatment finishing treatment direct connection facility 2 is newly provided with a steel pipe bending straightening device 40 as compared with the seamless steel pipe heat treatment finishing treatment direct connection facility 1. .
- the steel pipe bending straightening device 40 includes, for example, a plurality of straightening roller pairs arranged from the upstream side to the downstream side of the seamless steel pipe heat treatment finishing treatment direct connection facility 2. Each straightening roller pair is disposed above the pass line of the main transport path MT (the line along which the central axis of the seamless steel pipe moves) and below the pass line of the main transport path MT. And a straightening roller.
- the steel pipe bending straightening device 40 corrects the bending of the seamless steel pipe by passing the seamless steel pipe through a plurality of straightening roller pairs, thereby increasing the roundness or straightness of the seamless steel pipe.
- the seamless steel pipe heat treatment refining treatment direct connection facility 2 has a steel pipe bending straightening device 40 disposed downstream of the heat treatment apparatus 10 and on the main conveyance path MT upstream of the first steel pipe temperature forced lowering apparatus 20A. To do.
- Other configurations are the same as those of the seamless steel pipe heat treatment and refinement processing direct connection facility 1 of the first embodiment.
- the seamless steel pipe heat treatment refining treatment direct connection facility 2 includes, in addition to the steel pipe bending straightening device 40, in order from the upstream to the downstream of the equipment line, the heat treatment device 10, the first steel pipe temperature forced lowering device 20A, And the steel pipe inspection apparatus 30 is provided.
- the structure of the heat processing apparatus 10, the 1st steel pipe temperature forced fall apparatus 20A, and the steel pipe inspection apparatus 30 is the same as 1st Embodiment.
- the main transport path MT is formed by the main transport mechanism 100 from the heat treatment apparatus 10 to the steel pipe inspection apparatus 30. ing.
- the heat treatment apparatus 10 is connected to the steel pipe bending straightening apparatus 40 disposed downstream of the heat treatment apparatus 10 by the main transport mechanism 100.
- the steel pipe bend straightening device 40 is connected to the first steel pipe temperature forced lowering device 20 ⁇ / b> A disposed downstream of the steel pipe bend straightening device 40 by the main transport mechanism 100.
- the first steel pipe temperature forced lowering device 20 ⁇ / b> A is connected to the steel pipe inspection device 30 disposed downstream of the first steel pipe temperature forced lowering device 20 ⁇ / b> A by the main transport mechanism 100.
- ⁇ Bending may occur in the seamless steel pipe extracted from the heat treatment apparatus 10.
- the seamless steel pipe bends due to the heat treatment depending on the type of heat treatment, the size (outer diameter, thickness) of the seamless steel pipe, and the steel type.
- the seamless steel pipe before being charged into the heat treatment apparatus 10 may already bend.
- bending may occur in the seamless steel pipe in the quenching process before the tempering. In this case, a seamless steel pipe that has already been bent is inserted into the heat treatment apparatus 10.
- the bending of the seamless steel pipe is corrected by the steel pipe bending correction apparatus 40.
- the steel pipe bend straightening device 40 is capable of straightening (warm straightening) in the temperature range near the heat treatment temperature. Therefore, in the seamless steel pipe heat treatment refining treatment direct connection facility 2, the steel pipe bending straightening device 40 performs warm straightening on the seamless steel pipe extracted from the heat treatment apparatus 10 as necessary. In the seamless steel pipe heat treatment refining process direct connection facility 2, the warm steel seamless steel pipe is further transported to the first steel pipe temperature forced lowering device 20A by the main transport mechanism 100, and the first steel pipe temperature forced lowering device 20A is used. The temperature of the seamless steel pipe is forcibly lowered.
- the temperature of the seamless steel pipe supplied to the steel pipe inspection device 30 can be lowered, and the seamless steel pipe temperature is high. It is possible to suppress a failure of the steel pipe inspection device 30 and a decrease in flaw detection accuracy due to the above.
- seamless steel pipes in particular, in seamless pipes for oil wells used for oil well pipes, if strain remains in the seamless steel pipes, the resistance to sulfide stress cracking (SSC resistance) decreases. Therefore, if straightening is performed cold on a seamless steel pipe for oil well use for sour environment where SSC resistance is required, strain remains in the seamless steel pipe and SSC resistance decreases.
- warm straightening is performed on the seamless steel pipe extracted from the heat treatment apparatus 10 using the steel pipe bending straightening device 40. When warm straightening is performed, the strain introduced by straightening is less likely to remain in the seamless steel pipe as compared with cold straightening. Therefore, the equipment layout of the present embodiment is particularly effective for seamless steel pipes (for which SSC resistance is required) for sour environment use.
- the manufacturing method of the seamless steel pipe using the seamless steel pipe heat treatment refining treatment direct connection equipment 2 is as follows. First, the seamless steel pipe is inserted into the heat treatment apparatus 10 to perform heat treatment on the seamless steel pipe.
- the heat treatment is, for example, a tempering process or an annealing process.
- the seamless steel pipe held for a predetermined time at the heat treatment temperature is extracted from the heat treatment apparatus 10.
- the extracted seamless steel pipe is transported downstream on the main transport path MT using the main transport mechanism 100.
- the main steel transport mechanism 100 transports the heat-treated seamless steel pipe to the steel pipe bend straightening device 40.
- the steel pipe bending straightening device 40 warm straightening is performed on the seamless steel pipe. This increases the roundness and straightness of the seamless steel pipe.
- the main conveyance mechanism 100 conveys the seamless steel pipe after warm correction to the first steel pipe temperature forced lowering device 20A.
- the seamless steel pipe temperature is forcibly lowered by the same method as in the first embodiment.
- the seamless steel pipe whose temperature has been forcibly lowered by the first steel pipe temperature forced lowering device 20 ⁇ / b> A is transported downstream by the main transport mechanism 100 through the main transport path MT and supplied to the steel pipe inspection device 30.
- the steel pipe inspection apparatus 30 can perform a surface defect and / or internal defect inspection for the seamless steel pipe whose temperature has been forcibly lowered. Therefore, the failure of the member which comprises the steel pipe inspection apparatus 30 resulting from the seamless steel pipe temperature being too high, and the fall of flaw detection accuracy can be suppressed.
- the steel pipe bending straightening device 40 need not be used. In this case, after the seamless steel pipe extracted from the heat treatment apparatus 10 is transported to the steel pipe bend straightening device 40 by the main transport mechanism 100, the seamless steel pipe is converted into the steel pipe without performing the straightening by the steel pipe bend straightening apparatus 40. The bending straightening device 40 is passed from upstream to downstream.
- FIG. 3 is a functional block diagram showing an equipment line of a seamless steel pipe heat treatment finishing treatment direct connection facility according to the third embodiment.
- the seamless steel pipe heat treatment finishing treatment direct connection facility 3 according to the third embodiment is newly provided with a steel pipe bending straightening device 40 in comparison with the seamless steel pipe heat treatment finishing treatment direct connection facility 1. .
- the configuration of the steel pipe bend straightening device 40 is the same as that of the steel pipe bend straightening device 40 of the second embodiment.
- the steel pipe bending straightening device 40 of the present embodiment performs cold straightening.
- the seamless steel pipe heat treatment and refining treatment direct connection facility 3 of the present embodiment is provided with a steel pipe bending straightening device 40 on the main conveyance path MT downstream of the first steel pipe temperature forced lowering device 20A and upstream of the steel pipe inspection device 30. Deploy. Other configurations are the same as those of the seamless steel pipe heat treatment and refinement processing direct connection facility 1 of the first embodiment. That is, in the seamless steel pipe heat treatment refining treatment direct connection facility 2 of the second embodiment, the steel pipe bending straightening device 40 is disposed between the heat treatment device 10 and the first steel pipe temperature forced lowering device 20A. In the seamless steel pipe heat treatment refining treatment direct connection facility 3 of the present embodiment, the steel pipe bending straightening device 40 is greatly different in that it is disposed between the first steel pipe temperature forced lowering device 20A and the steel pipe inspection device 30.
- the seamless steel pipe heat treatment refining treatment direct connection equipment 3 is, in order from the upstream to the downstream of the equipment line, the heat treatment device 10, the first steel pipe temperature forced lowering device 20A, and the steel pipe inspection device. 30.
- the heat processing apparatus 10 the 1st steel pipe temperature forced fall apparatus 20A, and the steel pipe inspection apparatus 30 is the same as 1st Embodiment.
- a main transport path MT is formed by the main transport mechanism 100 from the heat treatment apparatus 10 to the steel pipe inspection apparatus 30.
- the heat treatment apparatus 10 is connected to the first steel pipe temperature forced lowering apparatus 20 ⁇ / b> A disposed downstream of the heat treatment apparatus 10 by the main transport mechanism 100.
- the first steel pipe temperature forced lowering device 20A is connected to the steel pipe bending straightening device 40 disposed downstream of the first steel pipe temperature forced lowering device 20A by the main transport mechanism 100.
- the steel pipe bending straightening device 40 is connected to the steel pipe inspection device 30 disposed downstream of the steel pipe bending straightening device 40 by the main transport mechanism 100.
- Bending may occur in the seamless steel pipe extracted from the heat treatment apparatus 10.
- the seamless steel pipe may bend due to the heat treatment depending on the type of heat treatment, the size (outer diameter, thickness) of the seamless steel pipe, and the steel type. Further, the seamless steel pipe before being charged into the heat treatment apparatus 10 may already bend.
- the bending of the seamless steel pipe is corrected by the steel pipe bending correction apparatus 40.
- the steel pipe bending straightening device 40 is disposed downstream of the first steel pipe temperature forced lowering device 20A.
- the steel pipe bending straightening device 40 performs cold straightening of the seamless steel pipe. be able to. For this reason, cold straightening is applied to seamless steel pipes of steel types that may crack in warm straightening, straightening of the bending caused by heat treatment, and the temperature is sufficiently lowered. Can be supplied to the steel pipe inspection device 30.
- Step pipe manufacturing method using seamless pipe 3 for heat treatment and finishing of seamless pipes The manufacturing method of the seamless steel pipe using the seamless steel pipe heat treatment and refining treatment direct connection equipment 3 is as follows. First, the seamless steel pipe is inserted into the heat treatment apparatus 10 to perform heat treatment on the seamless steel pipe. The heat treatment is, for example, a tempering process or an annealing process. A seamless steel pipe held at a predetermined heat treatment temperature for a predetermined time is extracted from the heat treatment apparatus 10. The extracted seamless steel pipe is transported downstream in the main transport path MT using the main transport mechanism 100.
- the seamless steel pipe temperature after heat treatment is high. Therefore, the main steel transport mechanism 100 transports the heat-treated seamless steel pipe to the first steel pipe temperature forced lowering device 20A.
- the seamless steel pipe temperature is forcibly lowered by the same method as in the first embodiment.
- the main transport mechanism 100 transports the seamless steel pipe whose temperature has been sufficiently lowered to the steel pipe bending straightening device 40.
- the steel pipe bending straightening device 40 cold straightening is performed on the seamless steel pipe. This increases the roundness and straightness of the seamless steel pipe.
- the temperature of the seamless steel pipe after cold straightening is sufficiently low. Therefore, the seamless steel pipe after cold correction is transported downstream on the main transport path MT by the main transport mechanism 100 and supplied to the steel pipe inspection apparatus 30.
- the steel pipe inspection apparatus 30 can perform a surface defect and / or internal defect inspection for the seamless steel pipe whose temperature has been forcibly lowered. Therefore, the failure of the member which comprises the steel pipe inspection apparatus 30 resulting from the steel pipe temperature being too high, and the fall of flaw detection accuracy can be suppressed.
- the steel pipe bending straightening device 40 need not be used. In this case, after transporting to the steel pipe bend straightening device 40 by the main transport mechanism 100, the seamless steel pipe is passed from the upstream to the downstream of the steel pipe bend straightening device 40 without performing the correction by the steel pipe bend straightening device 40.
- FIG. 4 is a functional block diagram showing an equipment line of a seamless steel pipe heat treatment finishing treatment direct connection facility according to the fourth embodiment.
- the seamless steel pipe heat treatment refining treatment direct connection facility 4 according to the fourth embodiment is compared with the seamless steel pipe heat treatment refining treatment direct connection facility 2 (FIG. 2) according to the second embodiment.
- a second steel pipe temperature forced lowering device 20B is newly provided.
- the second steel pipe temperature forced lowering device 20B is arranged downstream of the heat treatment device 10 and upstream of the steel pipe bending straightening device 40, and is arranged on the main conveyance path MT. That is, the second steel pipe temperature forced lowering device 20 ⁇ / b> B is connected to the upstream heat treatment device 10 by the main transport mechanism 100, and is connected to the downstream steel pipe bending correction device 40 by the main transport mechanism 100.
- the second steel pipe temperature forced lowering device 20B forcibly reduces the seamless steel pipe temperature in the same manner as the first steel pipe temperature forced lowering device 20A.
- the configuration of the second steel pipe temperature forced lowering device 20B is not particularly limited as long as the temperature of the seamless steel pipe can be forcibly lowered, similarly to the first steel pipe temperature forced lowering device 20A.
- the second steel pipe temperature forced lowering device 20B forcibly reduces the temperature of the seamless steel pipe by bringing the cooling fluid into contact with the outer surface and / or the inner surface of the seamless steel pipe.
- the second steel pipe temperature forced lowering device 20B includes a temperature forced lowering mechanism that forcibly reduces the temperature of the seamless steel pipe using the cooling fluid.
- the cooling fluid is, for example, a cooling liquid such as water or oil, a cooling gas such as air or an inert gas, a mixed fluid of a cooling liquid and a cooling gas, or the like.
- the cooling liquid used for the temperature forced lowering mechanism may be one type or two or more types. 1 type of cooling gas utilized for a temperature forced fall mechanism may be sufficient, and 2 or more types may be sufficient as it.
- the temperature forcing reduction mechanism preferably injects water onto the surface (outer surface and / or inner surface) of the steel pipe.
- the preferred second steel pipe temperature forced lowering device 20B is a water cooling device.
- the average cooling rate for the seamless steel pipe is, for example, 4 to 100 ° C./second.
- the second steel pipe temperature forced lowering device 20B may also include a storage tank that stores the cooling fluid without having the temperature forced lowering mechanism that injects the cooling fluid to the outer surface and / or the inner surface of the seamless steel pipe.
- the 2nd steel pipe temperature forced reduction apparatus 20B immerses a seamless steel pipe in the cooling fluid in a storage tank, and forcibly reduces the temperature of a seamless steel pipe.
- the 2nd steel pipe temperature forced fall apparatus 20B may be provided with the said storage tank and the said temperature forced fall mechanism.
- the second steel pipe temperature forced lowering device 20B has a configuration if it is possible to forcibly reduce the temperature of the seamless steel pipe by bringing the cooling fluid into contact with the outer surface and / or the inner surface of the seamless steel pipe. Is not particularly limited.
- seamless steel pipe heat treatment finishing treatment direct connection facility 4 of the present embodiment are the same as the seamless steel pipe heat treatment finishing treatment direct connection facility 2 of the second embodiment. That is, in the seamless steel pipe heat treatment refining treatment direct connection facility 2 of the second embodiment, one steel pipe temperature forced lowering device (first steel pipe temperature forced lowering device 20A) is downstream of the steel pipe bending straightening device 40 and is a steel pipe.
- first steel pipe temperature forced lowering device 20A is downstream of the steel pipe bending straightening device 40 and is a steel pipe.
- two steel pipe temperature forced lowering devices (first steel pipe temperature forced lowering device 20A and second steel pipe temperature forced lowering device 20A and second The steel pipe temperature forced lowering device 20B) is arranged, and the second steel pipe temperature forced lowering device 20B, the steel pipe bending straightening device 40, and the first steel pipe temperature forced lowering device 20A are arranged in order from upstream to downstream. Different.
- the seamless steel pipe heat treatment refining treatment direct connection equipment 4 is in order from the upstream to the downstream of the equipment line in order from the upstream to the downstream.
- a straightening device 40 and a steel pipe inspection device 30 are provided.
- Each structure of the heat processing apparatus 10, the steel pipe bending correction apparatus 40, the 1st steel pipe temperature forced fall apparatus 20A, and the steel pipe inspection apparatus 30 is the same as 2nd Embodiment.
- a main transport path MT is formed by the main transport mechanism 100 from the heat treatment apparatus 10 to the steel pipe inspection apparatus 30. ing.
- the heat treatment apparatus 10 is connected to the second steel pipe temperature forced lowering apparatus 20 ⁇ / b> B disposed downstream of the heat treatment apparatus 10 by the main transport mechanism 100.
- the second steel pipe temperature forced lowering device 20 ⁇ / b> B is connected to the steel pipe bending straightening device 40 by the main transport mechanism 100.
- the steel pipe bend straightening device 40 is connected to the first steel pipe temperature forced lowering device 20 ⁇ / b> A disposed downstream of the steel pipe bend straightening device 40 by the main transport mechanism 100.
- the first steel pipe temperature forced lowering device 20 ⁇ / b> A is connected to the steel pipe inspection device 30 disposed downstream of the first steel pipe temperature forced lowering device 20 ⁇ / b> A by the main transport mechanism 100.
- the seamless steel pipe heat treatment refining treatment direct connection facility 4 having the above-described configuration, it can be selected which of the second steel pipe temperature forced lowering device 20B and the first steel pipe temperature forced lowering device 20A is used according to the steel type of the seamless steel pipe. .
- SSC resistance sour resistance
- the steel pipe bending straightening device 40 performs warm correction. Therefore, in this case, after the seamless steel pipe extracted from the heat treatment apparatus 10 is transported to the second steel pipe temperature forced lowering apparatus 20B by the main transport mechanism 100, the temperature forced lowering process in the second steel pipe temperature forced lowering apparatus 20B is performed.
- the seamless steel pipe is passed from the upstream side to the downstream side of the second steel pipe temperature forced lowering device 20B and conveyed to the steel pipe bending straightening device 40 as it is. And in the steel pipe bending correction apparatus 40, warm correction is implemented with respect to a seamless steel pipe.
- the first steel pipe temperature forced lowering device 20A After the straightened seamless steel pipe is transported to the first steel pipe temperature forced lowering device 20A by the main transport mechanism 100, the first steel pipe temperature forced lowering device 20A forcibly reduces the seamless steel pipe temperature.
- the seamless steel pipe whose temperature has been sufficiently lowered by the first steel pipe temperature forced lowering device 20 ⁇ / b> A can be conveyed to the steel pipe inspection device 30.
- the steel pipe inspection device 30 is supplied with a seamless steel pipe whose temperature has been sufficiently lowered while forcibly lowering the temperature with the first steel pipe temperature forcing reduction device 20A to suppress the residual strain introduced by the bending correction. it can.
- the temperature of the seamless steel pipe is changed to the first steel pipe temperature without performing the forced temperature reduction in the first steel pipe temperature forced lowering device 20A. It passes from upstream to downstream of the compulsory lowering device 20A and is transported to the steel pipe inspection device 30 as it is.
- the temperature is forcibly lowered by the second steel pipe temperature forced lowering device 20B, and then the steel pipe is bent.
- the seamless steel pipe having a sufficiently reduced temperature can be supplied to the steel pipe inspection apparatus 30 while suppressing the occurrence of cracks due to the correction.
- neither the first steel pipe temperature forced lowering device 20A nor the second steel pipe temperature forced lowering device 20B is subjected to temperature forced reduction. That is, in this case, the seamless steel pipe extracted from the heat treatment apparatus 10 is transported by the main transport mechanism 100, and is passed through the second steel pipe temperature forced lowering apparatus 20B without performing the forced temperature decrease. And in the steel pipe bending correction apparatus 40, the bending of a seamless steel pipe is corrected. The seamless steel pipe after bending correction is transported by the main transport mechanism 100 and passed through the first steel pipe temperature forced lowering device 20A without performing the forced temperature decrease. And in the steel pipe inspection apparatus 30, a flaw detection is implemented about the surface defect and / or internal defect of a seamless steel pipe.
- FIG. 5 A is a functional block diagram which shows the equipment line of the seamless steel pipe heat treatment finishing process direct connection equipment by 5th Embodiment.
- the seamless steel pipe heat treatment refining treatment direct connection facility 5 according to the fifth embodiment is compared with the seamless steel pipe heat treatment refining treatment direct connection facility 2 (FIG. 2) according to the second embodiment.
- a second steel pipe temperature forced lowering device 20B and a sub transport mechanism 101 are newly provided.
- the sub transport mechanism 101 is connected to the main transport mechanism 100 between the heat treatment apparatus 10 and the steel pipe bending straightening apparatus 40 at a branch point 102.
- the sub transport mechanism 101 extends in a different direction from the main transport mechanism 100.
- the sub transport mechanism 101 constitutes a sub transport path ST branched from the main transport path MT at a branch point 102.
- the configuration of the sub transport mechanism 101 is the same as that of the main transport mechanism 100.
- the sub-transport mechanism 101 includes, for example, a plurality of transport members arranged from the upstream side to the downstream side of the seamless steel pipe heat treatment refining processing direct connection facility 5.
- the conveyance member is, for example, a conveyance roller.
- the conveyance member of the sub conveyance mechanism 101 is not limited to the conveyance roller arranged in the downstream from the upstream of the seamless steel pipe heat treatment finishing treatment direct connection equipment 5.
- the transport member of the sub transport mechanism 101 may be, for example, a transport chain capable of transporting a steel material from upstream to downstream of the seamless steel pipe heat treatment and refinement processing direct connection facility 5 or a walking beam.
- the sub transport mechanism 101 may transport the steel pipe from the upstream to the downstream of the seamless steel pipe heat treatment finishing treatment direct connection facility 5 by a transport member other than the roller, the chain, and the walking beam.
- the plurality of conveying members are disposed below the seamless steel pipe to which at least a part is conveyed, and contact the lower part of the conveyed seamless steel pipe to convey the seamless steel pipe downstream.
- a known branching device is arranged at the branching point 102.
- the branch device transports the seamless steel pipe transported from the upstream to the downstream on the main transport path MT to the sub transport path ST.
- the branching device is, for example, a kicker or a pusher.
- the second steel pipe temperature forced lowering device 20B is arranged downstream of the heat treatment device 10 and on the sub transport path ST. That is, the second steel pipe temperature forced lowering device 20 ⁇ / b> B is connected to the upstream heat treatment device 10 by the sub transport mechanism 101.
- the second steel pipe temperature forced lowering device 20B forcibly reduces the temperature of the conveyed seamless steel pipe, similarly to the first steel pipe temperature forced lowering device 20A.
- the second steel pipe temperature forced lowering device 20B has the above-described configuration.
- the other configuration of the seamless steel pipe heat treatment finishing treatment direct connection facility 5 of the present embodiment is the same as that of the seamless steel pipe heat treatment finishing treatment direct connection facility 2 of the second embodiment.
- the seamless steel pipe heat treatment refining treatment direct connection equipment 5 includes, in addition to the sub-transport mechanism 101 and the second steel pipe temperature forced lowering device 20B, the heat treatment equipment 10 and the steel pipe in order from the upstream to the downstream of the equipment line.
- a bending straightening device 40, a first steel pipe temperature forced lowering device 20A, and a steel pipe inspection device 30 are provided.
- the configurations of the heat treatment apparatus 10, the steel pipe bending straightening apparatus 40, the first steel pipe temperature forced lowering apparatus 20A, and the steel pipe inspection apparatus 30 are the same as those in the first embodiment.
- the main transport path MT is formed by the main transport mechanism 100 from the heat treatment apparatus 10 to the steel pipe inspection apparatus 30. ing.
- the heat treatment apparatus 10 is connected to the steel pipe bending straightening apparatus 40 disposed downstream of the heat treatment apparatus 10 by the main transport mechanism 100.
- the steel pipe bend straightening device 40 is connected to the first steel pipe temperature forced lowering device 20 ⁇ / b> A disposed downstream of the steel pipe bend straightening device 40 by the main transport mechanism 100.
- the first steel pipe temperature forced lowering device 20 ⁇ / b> A is connected to the steel pipe inspection device 30 disposed downstream of the first steel pipe temperature forced lowering device 20 ⁇ / b> A by the main transport mechanism 100.
- a heat treatment apparatus for a seamless steel pipe that does not require inspection by the steel pipe inspection apparatus 30 or a seamless steel pipe that does not require correction by the steel pipe bending straightening apparatus 40 After being extracted from 10, it is transported not to the main transport path MT but to the sub transport path ST. And if necessary, the temperature of the seamless steel pipe is forcibly lowered by the second steel pipe temperature forced lowering device 20B. On the other hand, for a seamless steel pipe that requires warm correction, after being extracted from the heat treatment apparatus 10, it is transported downstream on the main transport path MT, and warm correction is performed in the steel pipe bending straightening apparatus 40.
- the seamless steel pipe extracted from the heat treatment apparatus 10 is transported to the steel pipe bend straightening device 40 by the main transport mechanism 100, the seamless steel pipe is converted into the steel pipe without performing the straightening by the steel pipe bend straightening apparatus 40.
- the bending straightening device 40 is passed from upstream to downstream.
- the seamless steel pipe temperature forced fall apparatus 20A the seamless steel pipe temperature is forcedly fallen by the method similar to 1st Embodiment.
- the seamless steel pipe whose temperature has been forcibly lowered by the first steel pipe temperature forced lowering device 20 ⁇ / b> A is transported downstream by the main transport mechanism 100 through the main transport path MT and supplied to the steel pipe inspection device 30.
- FIG. 5B is a functional block diagram showing another configuration of the seamless steel pipe heat treatment finishing treatment direct connection facility 5 according to the fifth embodiment, which is different from FIG. 5A.
- the sub transport mechanism 101 is not connected to the main transport mechanism 100 but is connected to the heat treatment apparatus 10.
- the heat treatment apparatus 10 can extract the first extraction port from which the seamless steel pipe charged in the heat treatment apparatus 10 can be extracted, and the seamless steel pipe charged in the heat treatment apparatus 10.
- a second extraction port different from the extraction port is provided.
- the main transport mechanism 100 is connected to the heat treatment apparatus 10 and transports the seamless steel pipe extracted from the first extraction port.
- the sub transport mechanism 101 is connected to the heat treatment apparatus 10 at a position different from the main transport mechanism 100, and transports the seamless steel pipe extracted from the second extraction port. Therefore, also in this case, the sub transport path ST is a separate transport path different from the main transport path MT.
- the sub transport mechanism 101 transports the seamless steel pipe extracted from the heat treatment apparatus 10 and not transported to the main transport path MT through the sub transport path ST.
- the seamless steel pipe extracted from the first extraction port of the heat treatment apparatus 10 is transported downstream by the main transport mechanism 100 through the main transport path MT.
- the seamless steel pipe extracted from the second extraction port of the heat treatment apparatus 10 is transported downstream by the sub transport mechanism 101 through the sub transport path ST.
- the sub-transport mechanism 101 is downstream of the heat treatment apparatus 10 and upstream of the steel pipe bending straightening apparatus 40. Be placed. And the sub conveyance mechanism 101 is connected with the heat processing apparatus 10 or the main conveyance mechanism 100, and comprises sub conveyance path ST which is a conveyance path different from the main conveyance path MT. And when the sub conveyance mechanism 101 is connected with the heat processing apparatus 10, the sub conveyance mechanism 101 conveys the seamless steel pipe extracted from the heat processing apparatus 10 and not conveyed by the main conveyance path MT by sub conveyance path ST. When the sub transport mechanism 101 is connected to the main transport mechanism 100, the sub transport mechanism 101 transports the seamless steel pipe transported in the main transport path MT through the sub transport path ST.
- the steel pipe bend correction apparatus 40 performs warm correction by extracting it from the heat treatment apparatus 10 and then transporting it downstream in the main transport path MT. Can be implemented.
- the steel pipes are extracted from the heat treatment apparatus 10 and then conveyed downstream in the sub-conveying path ST, so that the steel pipe bending straightening apparatus 40 does not pass through the steel pipe bends. Can be transported.
- the seamless steel pipe that does not generate a bend even after being extracted from the heat treatment apparatus 10 but needs to be inspected by the steel pipe inspection apparatus 30.
- the steel pipe bend correction apparatus 40 is not corrected.
- the seamless steel pipe is passed from upstream to downstream of the steel pipe bending straightening device 40.
- the seamless steel pipe temperature forced fall apparatus 20A the seamless steel pipe temperature is forcedly fallen by the method similar to 1st Embodiment.
- the seamless steel pipe whose temperature has been forcibly lowered by the first steel pipe temperature forced lowering device 20 ⁇ / b> A is transported downstream by the main transport mechanism 100 through the main transport path MT and supplied to the steel pipe inspection device 30.
- the equipment disposed in the sub-transport path ST downstream of the second steel pipe temperature forced lowering device 20B is not particularly limited.
- a cooling bed may be arranged on the sub conveyance path ST downstream of the second steel pipe temperature forced lowering device 20B, or other equipment may be arranged.
- the sub conveyance path ST downstream of the second steel pipe temperature forced lowering device 20B may be connected to the main conveyance path MT between the first steel pipe temperature forced lowering device 20A and the steel pipe inspection device 30. That is, the sub conveyance mechanism 101 downstream of the second steel pipe temperature forced lowering device 20B may be connected to the main conveyance mechanism 100 between the first steel pipe temperature forced lowering device 20A and the steel pipe inspection device 30. In this case, the inspection by the steel pipe inspection device 30 can be performed online on the seamless steel pipe whose temperature has been forcibly reduced by the second steel pipe temperature forced reduction device 20B via the sub conveyance path ST.
- a seamless steel pipe that does not need to be corrected by the steel pipe bending straightening device 40 is transported in the sub-transport path ST, and the temperature is forcibly lowered by the second steel pipe temperature forced lowering device 20B and supplied to the steel pipe inspection device 30. be able to.
- the seamless steel pipe heat treatment and finishing direct connection facilities 2 to 5 are located upstream or downstream of the steel pipe bend straightening device 40 and next to the steel pipe bend straightening device 40.
- a diameter rolling mill 50 may be provided.
- the constant diameter rolling mill 50 is further arranged in the seamless steel pipe heat treatment and refining treatment direct connection facility 2 shown in FIG. 2, the pattern of FIG. 6A or FIG. 6B is conceivable.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT upstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed between the heat treatment apparatus 10 and the steel pipe bending straightening apparatus 40 and on the main conveyance path MT.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT downstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed on the main conveyance path MT between the steel pipe bending straightening device 40 and the first steel pipe temperature forced lowering device 20A.
- the constant diameter rolling mill 50 extends and rolls the steel pipe to form the final outer diameter of the seamless steel pipe.
- the constant diameter rolling mill 50 is, for example, a sizer or a stretch reducer.
- the constant diameter rolling mill 50 includes a plurality of rolling stands arranged from the upstream side to the downstream side of the seamless steel pipe heat treatment and refinement processing direct connection facility. Each rolling stand includes a plurality of rolling rolls arranged at equal intervals around a pass line (an axis through which the central axis of the seamless steel pipe passes). Calibers are formed on each rolling roll, and these calibers form a hole shape.
- the constant diameter rolling mill 50 is disposed in the front stage or the rear stage of the steel pipe bending straightening device 40, and the outer diameter of the seamless steel pipe is adjusted by the constant diameter rolling mill 50.
- the arrangement of the constant-diameter rolling mill 50 is not limited to the seamless steel pipe heat treatment refining treatment direct connection facility 2 shown in FIG.
- the constant diameter rolling mill 50 is arranged in the seamless steel pipe heat treatment and refinement processing direct connection facility 3 shown in FIG. 3, the pattern of FIG. 6C or FIG. 6D is conceivable.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT upstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed between the first steel pipe temperature forced lowering device 20A and the steel pipe bending straightening device 40 and on the main conveyance path MT.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT downstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed between the steel pipe bending straightening device 40 and the steel pipe inspection device 30 and on the main conveyance path MT.
- the constant diameter rolling mill 50 is arranged in the seamless steel pipe heat treatment and refining treatment direct connection facility 4 shown in FIG. 4, the pattern of FIG. 6E or FIG. 6F can be considered.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT upstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed between the second steel pipe temperature forced lowering device 20B and the steel pipe bending straightening device 40 and on the main conveyance path MT.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT downstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed on the main conveyance path MT between the steel pipe bending straightening device 40 and the first steel pipe temperature forced lowering device 20A.
- the constant diameter rolling mill 50 is arranged in the seamless steel pipe heat treatment and refining treatment direct connection facility 5 shown in FIG. 5A, the pattern of FIG. 6G or FIG. 6H can be considered.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT upstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed between the heat treatment apparatus 10 and the steel pipe bending straightening apparatus 40 and on the main conveyance path MT.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT downstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed on the main conveyance path MT between the steel pipe bending straightening device 40 and the first steel pipe temperature forced lowering device 20A.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT upstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed between the heat treatment apparatus 10 and the steel pipe bending straightening apparatus 40 and on the main conveyance path MT.
- the constant diameter rolling mill 50 is disposed on the main conveyance path MT downstream of the steel pipe bending straightening device 40 and next to the steel pipe bending straightening device 40. That is, the constant diameter rolling mill 50 is disposed on the main conveyance path MT between the steel pipe bending straightening device 40 and the first steel pipe temperature forced lowering device 20A.
- the outer diameter of the seamless steel pipe can be adjusted by drawing and rolling the seamless steel pipe with the constant diameter rolling mill 50.
- the steel pipe inspection device is located upstream of the steel pipe inspection device 30 and downstream of the first steel pipe temperature forced lowering device 20A.
- Other finishing equipment other than 30 may be arranged.
- Other refining equipment measures for example, a cutting device for cutting a seamless steel pipe to a predetermined length, a chamfering device for chamfering the end face of a seamless steel pipe, the outer diameter, inner diameter, wall thickness, etc. of the seamless steel pipe Profile meter device.
- a cutting device may be arranged on the main conveyance path MT between the first steel pipe temperature forced lowering device 20A and the steel pipe inspection device 30.
- a chamfering device may be disposed on the main conveyance path MT between the first steel pipe temperature forced lowering device 20 ⁇ / b> A and the steel pipe inspection device 30.
- a profile meter device may be disposed on the main conveyance path MT between the first steel pipe temperature forced lowering device 20 ⁇ / b> A and the steel pipe inspection device 30.
- One or more of a cutting device, a chamfering device, and a profile meter device may be continuously arranged on the main conveyance path MT between the first steel pipe temperature forced lowering device 20A and the steel pipe inspection device 30. .
- a refining device other than the cutting device, the chamfering device, and the profile measuring device may be arranged on the main conveyance path MT between the first steel pipe temperature forced lowering device 20A and the steel pipe inspection device 30, a refining device other than the cutting device, the chamfering device, and the profile measuring device may be arranged.
- a cutting device for cutting the seamless steel pipe with a predetermined length on the main transport path MT downstream of the steel pipe inspection device 30 and upstream of the carry-out table 500, and straightening the pipe end portion of the seamless steel pipe may be arranged. These apparatuses may be connected in a row by the main transport mechanism 100 from the upstream side to the downstream side of the seamless steel pipe heat treatment and finishing direct connection facility.
- Another facility may be arranged on the main conveyance path MT downstream of the heat treatment apparatus 10 and upstream of the first steel pipe temperature forced lowering apparatus 20A.
- the equipment disposed upstream of the heat treatment apparatus 10 is not particularly limited.
- Another heat treatment apparatus such as a quenching apparatus may be disposed upstream of the heat treatment apparatus 10, or an apparatus (such as a stretching mill such as a mandrel mill or a sizer) constituting pipe manufacturing line equipment may be disposed.
- the sub-transport mechanism 101 is disposed between the first steel pipe temperature forced lowering device 20 ⁇ / b> A and the steel pipe inspection device 30.
- a carry-out table 510 may be disposed downstream of the sub-transport mechanism 101.
- a sub conveyance path ST branched from the main conveyance path MT is formed between the first steel pipe temperature forced lowering device 20A and the steel pipe inspection device 30.
- a seamless steel pipe that does not require inspection of surface defects and / or internal defects by the steel pipe inspection device 30 is transported to the unloading table 510 using the sub-transport mechanism 101.
- the seamless steel pipe that does not require the inspection of surface defects and / or internal defects by the steel pipe inspection device 30 is carried out from the directly connected equipment of the seamless heat treatment and heat treatment processing equipment to another place without passing through the steel pipe inspection device 30. can do.
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Abstract
Description
図1は、本実施形態による継目無鋼管熱処理精整処理直結設備の設備ラインを示す機能ブロック図である。
継目無鋼管熱処理精整処理直結設備1を用いた継目無鋼管の製造方法は次のとおりである。初めに、継目無鋼管を熱処理装置10に装入して、継目無鋼管に対して熱処理を実施する。熱処理はたとえば、焼戻し処理、焼鈍処理である。好ましくは、熱処理装置10では焼戻し処理を実施する。この場合、熱処理装置10での熱処理温度は、AC1変態点未満である。熱処理装置10が焼戻し処理を実施する場合の熱処理温度の下限はたとえば、500℃以上であり、さらに好ましくは、600℃以上である。
図2は、第2の実施形態による継目無鋼管熱処理精整処理直結設備の設備ラインを示す機能ブロック図である。
継目無鋼管熱処理精整処理直結設備2を用いた継目無鋼管の製造方法は次のとおりである。初めに、継目無鋼管を熱処理装置10に装入して、継目無鋼管に対して熱処理を実施する。熱処理はたとえば、焼戻し処理、焼鈍処理である。
図3は、第3の実施形態による継目無鋼管熱処理精整処理直結設備の設備ラインを示す機能ブロック図である。
継目無鋼管熱処理精整処理直結設備3を用いた継目無鋼管の製造方法は次のとおりである。初めに、継目無鋼管を熱処理装置10に装入して、継目無鋼管に対して熱処理を実施する。熱処理はたとえば、焼戻し処理、焼鈍処理である。所定の熱処理温度で所定時間保持された継目無鋼管を、熱処理装置10から抽出する。抽出された継目無鋼管を、メイン搬送機構100を用いて、メイン搬送路MTで下流に搬送する。
図4は、第4の実施形態による継目無鋼管熱処理精整処理直結設備の設備ラインを示す機能ブロック図である。
図5Aは、第5の実施形態による継目無鋼管熱処理精整処理直結設備の設備ラインを示す機能ブロック図である。
上述の第2~第5の実施形態の継目無鋼管熱処理精整処理直結設備2~5は、さらに、鋼管曲がり矯正装置40の上流又は下流であって、鋼管曲がり矯正装置40の隣に、定径圧延機50を備えてもよい。
以上、本発明の実施の形態を説明した。しかしながら、上述した実施の形態は本発明を実施するための例示に過ぎない。したがって、本発明は上述した実施の形態に限定されることなく、その趣旨を逸脱しない範囲内で上述した実施の形態を適宜変更して実施することができる。
10 熱処理装置
20A 第1鋼管温度強制低下装置
20B 第2鋼管温度強制低下装置
30 鋼管検査装置
40 鋼管曲がり矯正装置
50 定径圧延機
100 メイン搬送機構
101 サブ搬送機構
102 分岐点
500 搬出テーブル
510 搬出テーブル
MT メイン搬送路
ST サブ搬送路
Claims (8)
- 継目無鋼管を装入可能であり、装入された前記継目無鋼管に対して熱処理を実施可能な熱処理装置と、
前記熱処理装置の下流に配置され、前記熱処理装置から抽出されて搬送された前記継目無鋼管の表面欠陥及び/又は内部欠陥を探傷する鋼管検査装置と、
前記熱処理装置から抽出された前記継目無鋼管を、前記熱処理装置の下流に配置された前記鋼管検査装置まで搬送するためのメイン搬送路を構成し、前記継目無鋼管を搬送するための複数の搬送部材を備えるメイン搬送機構と、
前記熱処理装置よりも下流であって、前記鋼管検査装置よりも上流の前記メイン搬送路上に配置され、前記メイン搬送路上の前記継目無鋼管の温度を強制的に低下させる、第1鋼管温度強制低下装置とを備える、
継目無鋼管熱処理精整処理直結設備。 - 請求項1に記載の継目無鋼管熱処理精整処理直結設備であってさらに、
前記熱処理装置の下流であって、前記第1鋼管温度強制低下装置の上流の前記メイン搬送路上に配置され、前記継目無鋼管の曲がりを矯正する鋼管曲がり矯正装置を備える、
継目無鋼管熱処理精整処理直結設備。 - 請求項1に記載の継目無鋼管熱処理精整処理直結設備であってさらに、
前記第1鋼管温度強制低下装置の下流であって、前記鋼管検査装置の上流の前記メイン搬送路上に配置され、前記継目無鋼管の曲がりを矯正する鋼管曲がり矯正装置を備える、
継目無鋼管熱処理精整処理直結設備。 - 請求項2に記載の継目無鋼管熱処理精整処理直結設備であってさらに、
前記熱処理装置の下流であって、前記鋼管曲がり矯正装置の上流の前記メイン搬送路上に配置され、前記メイン搬送路上の前記継目無鋼管の温度を強制的に低下させる、第2鋼管温度強制低下装置を備える、
継目無鋼管熱処理精整処理直結設備。 - 請求項2に記載の継目無鋼管熱処理精整処理直結設備であってさらに、
前記熱処理装置の下流であって、前記鋼管曲がり矯正装置の上流に配置され、前記熱処理装置又は前記メイン搬送機構と繋がっており、前記メイン搬送路と異なる搬送路であるサブ搬送路を構成し、前記継目無鋼管を搬送するための複数の搬送部材を備えるサブ搬送機構と、
前記サブ搬送路上に配置され、前記サブ搬送路上の前記継目無鋼管の温度を強制的に低下させる、第2鋼管温度強制低下装置を備える、
継目無鋼管熱処理精整処理直結設備。 - 請求項5に記載の継目無鋼管熱処理精整処理直結設備であって、
前記サブ搬送機構は前記メイン搬送機構と繋がっており、前記サブ搬送路は、前記メイン搬送路から分岐して構成され、
前記サブ搬送機構は、前記メイン搬送路で搬送された前記継目無鋼管を、前記サブ搬送路で搬送する、
継目無鋼管熱処理精整処理直結設備。 - 請求項5に記載の継目無鋼管熱処理精整処理直結設備であって、
前記サブ搬送機構は前記熱処理装置と繋がっており、前記熱処理装置から抽出されて前記メイン搬送路に搬送されない前記継目無鋼管を前記サブ搬送路で搬送する、
継目無鋼管熱処理精整処理直結設備。 - 請求項2~請求項7のいずれか1項に記載の継目無鋼管熱処理精整処理直結設備であってさらに、
前記鋼管曲がり矯正装置の上流又は下流の前記メイン搬送路上であって、前記鋼管曲がり矯正装置の隣に配置される、定径圧延機を備える、
継目無鋼管熱処理精整処理直結設備。
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JP2020510897A JP6965988B2 (ja) | 2018-03-28 | 2019-03-26 | 継目無鋼管熱処理精整処理直結設備 |
US16/981,435 US11898216B2 (en) | 2018-03-28 | 2019-03-26 | Seamless steel pipe heat-treatment-finishing-treatment continuous facility |
EP19777166.0A EP3778931A4 (en) | 2018-03-28 | 2019-03-26 | PLANT FOR SEAMLESS STEEL PIPE HEAT TREATMENT / CLEANING |
BR112020016194-2A BR112020016194B1 (pt) | 2018-03-28 | 2019-03-26 | Instalação contínua de tratamento térmico e tratamento de acabamento para tubo de aço sem costura |
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