WO2013133042A1 - 金属管の製造方法及び製造設備 - Google Patents
金属管の製造方法及び製造設備 Download PDFInfo
- Publication number
- WO2013133042A1 WO2013133042A1 PCT/JP2013/054460 JP2013054460W WO2013133042A1 WO 2013133042 A1 WO2013133042 A1 WO 2013133042A1 JP 2013054460 W JP2013054460 W JP 2013054460W WO 2013133042 A1 WO2013133042 A1 WO 2013133042A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal
- tube
- cutting
- metal tube
- quenching
- Prior art date
Links
Images
Classifications
-
- 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
-
- 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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the present invention relates to a metal pipe manufacturing method and manufacturing equipment.
- Metal pipes typified by steel pipes are manufactured by hot working such as piercing and rolling, and cold working such as cold drawing is performed as necessary.
- the metal tube is further subjected to a heat treatment represented by quenching or the like in order to obtain desired mechanical properties (strength, toughness, etc.).
- One of the heat treatment methods for metal tubes is quenching by induction heating.
- Induction heating is performed using an induction heating coil.
- the metal tube is heated while passing through the induction heating coil.
- the heated metal tube is cooled by water cooling or the like and quenched.
- the tube end of the metal tube is heated while passing through the induction heating coil. For this reason, the tube end portion of the metal tube is not easily heated in the same manner as the portion other than the tube end portion of the metal tube, which may result in insufficient heating or overheating. In this case, the tube end cannot obtain the target tissue. Furthermore, if cooling liquid such as water or oil enters the inner surface of the tube from the tube end during cooling after induction heating, the tube end may not obtain the target structure.
- a plug or a jig (hereinafter referred to as a plug or the like) is inserted between steel pipes arranged in a line in the front and rear. Arrange and connect the front and rear steel pipes with plugs etc. And it heat-processes continuously by induction heating with respect to the steel pipe connected mutually. Thereby, uneven burning at the end of the tube is suppressed, and further, penetration of the cooling liquid into the inner surface of the tube by a plug or the like is suppressed.
- induction heating is carried out while maintaining a predetermined distance between the preceding steel material and the succeeding steel material.
- the front end portion of the subsequent steel material is preheated by the radiant heat from the rear end portion of the preceding steel material. Therefore, insufficient heating at the tube end is suppressed, and the length of the unquenched portion at the tube end is reduced.
- An object of the present invention is to provide a method of manufacturing a metal tube that can suppress quenching failure.
- the method of manufacturing a metal tube according to the present embodiment includes a step of correcting the bending of the metal tube by a straightening machine, a step of cutting both ends of the metal tube whose bending has been corrected, and both ends of the tube are cut. And transporting the plurality of metal tubes to a quenching apparatus, and the quenching apparatus heats the metal tubes by induction heating and then quenches them by cooling.
- the metal tube manufacturing method according to this embodiment can suppress quenching defects.
- FIG. 1 is an overall configuration diagram of a metal pipe manufacturing facility according to the present embodiment.
- FIG. 2 is a flowchart showing a method of manufacturing a metal tube according to this embodiment.
- FIG. 3 is an overall configuration diagram of a manufacturing facility having another configuration different from that in FIG. 1.
- FIG. 4 is an overall configuration diagram of a manufacturing facility having another configuration different from those in FIGS. 1 and 3.
- the outline of the metal pipe manufacturing method and manufacturing equipment according to the present embodiment is as follows.
- the method of manufacturing a metal tube according to the present embodiment includes a step of correcting the bending of the metal tube by a straightening machine, a step of cutting both ends of the metal tube whose bending has been corrected, and both ends of the tube are cut.
- a plurality of metal tubes are transported to a quenching device, and the quenching device is heated by induction heating and then quenched to cool.
- the bending of the metal tube is corrected by the straightening machine. Furthermore, the unevenness
- the cutting of both pipe ends is performed after bending correction. Therefore, even if bending remains at the end of the straightened metal tube, the portion is cut. Therefore, the metal tube tends to be straight. Since quenching by induction heating is performed on a metal tube that is straight and has uneven end faces, quenching defects such as uneven burning are suppressed.
- the quenching device includes an induction heating coil and a cooling device.
- the induction heating coil is disposed on the entrance side of the quenching apparatus.
- a cooling device is arrange
- the pipe ends of the metal pipes are abutted and contact each other. Therefore, the metal pipes arranged in the front and rear are like a long steel pipe, and the pipe ends are substantially absent. For this reason, the entire metal tube is uniformly heated. Therefore, poor quenching due to insufficient heating or overheating of the tube end of the metal tube is suppressed. Furthermore, since the pipe ends come into contact with each other, the penetration of the coolant into the pipe inner surface is suppressed during quenching. Therefore, poor quenching at the tube end is suppressed.
- the manufacturing apparatus used in the above manufacturing method includes a straightening machine, a quenching apparatus, a transport band, and a tube cutting apparatus.
- zone is arrange
- the pipe cutting device cuts both pipe ends of the metal pipe which is arranged in the transport band and whose bending is corrected. In the cutting process, both pipe ends of the metal pipes transported from the straightening machine by the transport band are cut by a pipe cutting device, and in the quenching process, a plurality of metal tubes having both pipe ends cut by the transport band. Transport to quenching equipment.
- the metal pipe is transported by the transport belt, and it is carried out online from correction to quenching. Therefore, the productivity of the metal pipe is increased and the traceability is also effective.
- the transport band includes first to third transport bands.
- a 1st conveyance belt is arrange
- a 2nd conveyance belt arranges the metal tube conveyed by the 1st conveyance belt in the diameter direction of a metal tube, and conveys it to a diameter direction.
- a 3rd conveyance belt is arrange
- the tube cutting device includes first and second cutting devices.
- a 1st cutting device is arrange
- a 2nd cutting device is arrange
- the step of cutting includes the step of transporting the metal tube to the cutting position by the first cutting device by the second transport band, and the one cutting end of the metal tube by the first cutting device at the cutting position of the first cutting device.
- one end of the metal tube is cut by each cutting device using a plurality of cutting devices. Therefore, the time required for cutting can be shortened.
- the second cutting device performs the cutting operation of the other tube end of the other metal tube. Is done.
- the metal pipe manufacturing facility includes a straightening machine, a quenching device, a transport band, and a tube cutting device.
- the straightening machine corrects the bending of the metal tube.
- the quenching device includes an induction heating coil and a cooling device.
- the induction heating coil is disposed on the entry side.
- the cooling device is disposed on the outlet side, and cools the metal tube with the coolant.
- the quenching apparatus quenches a plurality of metal tubes that are conveyed in a line.
- zone is arrange
- the pipe cutting device cuts both pipe end portions of the metal pipe which is arranged in the transport band and whose bending is corrected.
- the metal tube is transported by the transport belt, and correction, cutting and quenching are performed on-line. Therefore, the productivity of the metal pipe is increased and the traceability is also effective.
- the transport band includes first to third transport bands.
- a 1st conveyance belt is arrange
- a 2nd conveyance belt arranges the metal tube conveyed by the 1st conveyance belt in the diameter direction of a metal tube, and conveys it to a diameter direction.
- a 3rd conveyance belt is arrange
- the tube cutting device includes first and second cutting devices.
- a 1st cutting device is arrange
- a 2nd cutting device is arrange
- one end of the metal tube is cut by each cutting device using a plurality of cutting devices. Therefore, the time required for cutting can be shortened.
- the second cutting device cuts the other tube end of the other metal tube.
- FIG. 1 is an overall configuration diagram (layout diagram) of a metal pipe manufacturing facility according to the present embodiment.
- the manufacturing facility 100 includes a straightening machine 10, a tube cutting device 20, a quenching device 30, and a transport band 40.
- the straightening machine 10 corrects the bending of the metal pipe.
- the straightening machine 10 is a roll straightening machine and includes a plurality of straightening roll pairs 11.
- the plurality of straightening roll pairs 11 are arranged in a line along the pass line.
- the straightening roll pair 11 includes a pair of straightening rolls arranged above and below across the pass line. The rotation axes of the straightening rolls intersect each other.
- the straightening machine 10 further includes a lifting device (not shown).
- the lifting device adjusts the interval between the straightening rolls in the straightening roll pair 11.
- the elevating device further adjusts the height positions of the adjacent correction roll pairs 11 to set an offset.
- the straightening machine 10 passes the metal pipe through the plurality of straightening roll pairs 11 to correct the bending of the metal pipe.
- the quenching device 30 includes an induction heating coil 31 and a cooling device 32.
- the induction heating coil 31 heats the metal tube to a quenching temperature by induction heating.
- the induction heating coil 31 is disposed on the entrance side of the quenching device 30.
- the plurality of induction heating coils 31 are arranged in a line along the pass line.
- the quenching device 30 includes two induction heating coils 31.
- the induction heating coil 31 may be three or more, or may be one.
- the cooling device 32 cools the metal tube heated to the quenching temperature using a coolant.
- the cooling device 32 is disposed on the exit side of the quenching device 30.
- the cooling device 32 has a plurality of jet nozzles arranged around the pass line.
- the cooling device 32 rapidly cools the metal pipe by injecting a cooling liquid from the outlet.
- the coolant is, for example, water or oil.
- the cooling device 32 is not limited to the above configuration. According to another configuration, the metal tube may be quenched using a coolant.
- the quenching device 30 further includes a plurality of transport rollers.
- the plurality of transport rollers are arranged along the pass line between the plurality of induction heating coils 31 and the cooling device 32. Quenching is carried out while the metal tube is being conveyed at a predetermined speed by the conveying roller.
- the transport belt 40 is disposed between the straightening machine 10 and the quenching device 30, and transports the metal pipe whose curvature has been corrected by the straightening machine 10 to the quenching device 30.
- the transport belt 40 includes a plurality of transport rollers arranged along a pass line.
- the transport band 40 may have a configuration other than the transport rollers.
- the tube cutting device 20 cuts both ends of the metal tube.
- the tube cutting device 20 is disposed on the transport band 40.
- the tube cutting device 20 includes a plurality of clamping devices arranged around a pass line and a disk-shaped knife saw.
- the plurality of clamping devices are in contact with the outer peripheral surface of the metal tube conveyed on the pass line, and sandwich the metal tube.
- the disc-shaped knife saw cuts the tube ends (front tube end, rear tube end) of the metal tube while moving the outer peripheral surface of the metal tube clamped by the clamping device in the circumferential direction.
- the tube cutting device 20 may include a plurality of disk-shaped knife saws. In this case, the plurality of knife saws are arranged around an axis on which the metal tube is arranged. Each knife saw cuts the metal tube while moving in the circumferential direction between the metals. If a knife saw is used, it is possible to suppress the occurrence of “burring” on the end face of the metal tube.
- the manufacturing facility 100 further includes transport bands 50 and 60.
- the conveyance bands 50 and 60 include a plurality of conveyance rollers arranged along a pass line.
- the conveyance band 50 is a material to be quenched, and conveys a metal tube stored in a predetermined place to the straightening machine 10.
- the conveyance belt 60 conveys the quenched metal tube to a predetermined temporary storage place or storage place.
- the conveyance bands 50 and 60 may convey the metal tube by a configuration other than the conveyance roller.
- the straightening machine 10 corrects the bending of the metal tube
- the tube cutting device 20 cuts both ends of the metal tube
- the quenching device 30 quenches the metal tube.
- the metal pipe to be quenched has a curved bend, and the end face of the pipe has no irregularities by cutting and is flat. Therefore, when the pipe ends of the preceding material (preceding metal tube) and the succeeding material (metal tube lined up behind the preceding material) are abutted, the leading end of the preceding material and the front end of the succeeding material are likely to come into surface contact. And the following material looks like a long metal tube. Therefore, at the time of quenching, it is easy to uniformly heat the entire metal tube, and quenching defects such as uneven baking are suppressed.
- the manufacturing method of a metal pipe is explained in full detail.
- FIG. 2 is a flowchart of the metal tube manufacturing method according to the present embodiment.
- the bending of a metal pipe is corrected using the straightening machine 10 (S1).
- the metal tube is transported along the pass line by the transport belt 50 in the axial direction of the metal tube.
- the conveyed metal pipe is passed through the straightening roll pair 11 of the straightening machine 10 to correct the bending of the metal pipe.
- the metal pipe whose curvature is corrected is transported in the axial direction of the metal pipe by the transport belt 40 (S2).
- the metal tube is transported to the tube cutting device 20 by the transport band 40.
- the both ends of the conveyed metal tube are cut by the tube cutting device 20 (S3 to S5).
- a plurality of position adjusting rollers are arranged on the entry side and the exit side of the tube cutting device 20.
- the position adjusting roller adjusts the positional relationship between the front end of the metal tube and the knife saw of the tube cutting device 20 by moving the metal tube back and forth in the axial direction.
- the position adjusting roller is stopped.
- the clamp device of the tube cutting device 20 holds the metal tube.
- the metal tube is fixed by the clamping device. After the metal tube is clamped by the clamp device, the front tube end of the metal tube is cut while rotating the knife saw (S3).
- the clamping by the clamp device is released, and the metal tube is advanced in the axial direction by the position adjusting roller (S4). Then, the positional relationship between the rear tube end of the metal tube and the knife saw is adjusted. When the rear tube end of the metal tube reaches a predetermined position, the adjustment roller is stopped. The metal tube is again clamped and fixed by the clamp device. Then, the rear tube end of the metal tube is cut while rotating the knife saw (S5). End surfaces of the front tube end and the rear tube end of the metal tube after cutting are flat, and unevenness is suppressed.
- the cutting of the tube end in steps S3 and S5 is performed after the bending correction (S1). Therefore, even if the bending remains at the end of the straightened metal tube, the end where the bending remains is likely to be cut. Therefore, the metal tube tends to be straight.
- ⁇ / RTI> The metal tube having both ends cut off is transported to the quenching apparatus 30 using the transport band 40 (S6). At this time, the transport band 40 transports the metal tube in the axial direction of the metal tube.
- the metal tube After the metal tube reaches the quenching device 30, the metal tube is quenched (S7). At this time, the pipe ends of the plurality of metal pipes arranged in a line in the front and rear are brought into contact with each other, and the metal pipe is conveyed into the quenching apparatus 30. Then, heating by the induction heating coil 31 and rapid cooling by the cooling device 32 are performed.
- a plurality of adjustment rollers are arranged along the pass line on the quenching device 30 side of the transport belt 40.
- the plurality of adjusting rollers follow the preceding metal tube (preceding material) and follow the following metal tube (following material).
- the adjustment roller includes a high speed roller and a low speed roller.
- the low speed roller is arranged closer to the quenching device 30 than the high speed roller.
- the low speed roller includes a drive source different from that of the high speed roller, and the conveyance speed of the low speed roller is slower than the conveyance speed of the high speed roller.
- a plurality of metal tubes arranged in a line in the axial direction of the metal tube are conveyed from the high speed roller to the low speed roller.
- the conveyance speed of the low-speed roller is slower than that of the high-speed roller, the rear tube end of the preceding material is abutted against and contacts the front tube end of the subsequent material.
- the plurality of metal tubes lying in the front and rear are passed through the induction heating coil 31 as if they were one long metal tube. Therefore, insufficient heating and overheating of the tube end of the metal tube can be suppressed, and the metal tube can be prevented from being heated unevenly.
- the plurality of adjustment rollers are arranged on the quenching device 30 side of the transport band 40, but a plurality of adjustment rollers may be arranged in the quenching device 30.
- a known method may be used for speed control of each adjusting roller for keeping the succeeding material catching up with the preceding material.
- the plurality of metal tubes that are butted against each other are further rapidly cooled by passing through a cooling device 32 and quenched.
- the cooling liquid hardly enters the inner surface of the tube from the tube end of the metal tube. Therefore, it is possible to prevent the inner surface of the tube from being excessively cooled by the cooling liquid and difficult to obtain the target tissue.
- the quenched metal tube is transported to a predetermined temporary storage place or storage place by the transport belt 60.
- a straight metal tube with a flat tube end surface can be supplied to the quenching device 30 by the straightening machine 10 and the tube cutting device 20. Therefore, the metal tube is easily heated uniformly in the quenching device 30, and quenching failure due to unevenness of the quenching or the like is suppressed.
- the manufacturing equipment 100 connects the straightening machine 10, the tube cutting device 20 and the quenching device 30 with the transport band 40. Therefore, the bending correction process (S1), the tube cutting process (S3, S5), and the quenching process (S7) can be performed online, and productivity can be improved. Furthermore, if the bending correction process, the pipe cutting process, and the quenching process are performed online, the order of the metal pipes being processed is not changed in each process during the manufacturing process of the metal pipe and the conveyance between the processes. Therefore, it is also effective in terms of traceability.
- the layout of the manufacturing equipment 100 is not limited to FIG.
- the manufacturing facility 100 may have a layout shown in FIG.
- the transport band 41 advances the metal tube corrected by the straightening machine 10 in the axial direction of the metal tube and transports the metal tube to the tube cutting device 20.
- the conveyance band 42 arranges the metal tubes conveyed to the outlet side of the tube cutting device 20 in the radial direction of the metal tubes (direction perpendicular to the axial direction of the metal tubes), and conveys the metal tubes in the radial direction.
- the conveyance belt 42 includes, for example, a kicker and a plurality of inclined skids.
- the kicker kicks out the metal pipe on the conveyance band 41 on the outlet side of the tube cutting device 20 to the conveyance band 42.
- the plurality of inclined skids extend in a direction orthogonal to the extending direction of the transport band 41.
- the inclined skid is inclined downward from the conveyance band 41 side toward the conveyance band 43 side. Therefore, the metal tube rolls on the inclined skid from the transport band 41 side toward the transport band 43 side.
- the slope skid is provided with a stopper that can be tilted at each predetermined position in the extending direction.
- the stopper When the stopper is raised, the metal tube is stopped at a predetermined position in the transport band 42 by the stopper.
- the stopper falls down, the metal tube moves toward the transport belt 43 while rolling on the inclined skid again.
- the transport band 43 is disposed on the opposite side of the transport band 41 with the transport band 42 in between.
- the transport band 43 is arranged in parallel with the transport band 41.
- the transport band 43 transports the metal tube in the axial direction of the metal tube and in the direction opposite to the transport band 41.
- the conveyed metal tube reaches the quenching device 30 and is quenched.
- the transport band 43 transports the metal tube in the opposite direction to the transport band 41, but the transport band 41 and the quenching device 30 so that the transport band 43 transports the metal tube in the same direction as the transport band 41. May be laid out.
- the metal pipe manufacturing flow shown in FIG. 2 can also be implemented using the manufacturing equipment 100 of FIG.
- the layout of the manufacturing equipment 100 (particularly, the configuration and arrangement of the transport belt 40) can be performed if it can be performed online in the order of the bending correction process (S1), the tube cutting process (S3 and S5), and the quenching process (S7).
- S1 the bending correction process
- S3 and S5 the tube cutting process
- S7 quenching process
- one pipe cutting device 20 cuts both pipe ends of the metal pipe.
- a plurality of cutting devices may be provided, and the cutting of the front tube end portion and the rear tube end portion of the metal tube may be performed by separate cutting devices.
- FIG. 4 is a diagram showing an overall configuration of the manufacturing facility 200 according to the second embodiment.
- the manufacturing facility 200 includes a tube cutting device 25 instead of the tube cutting device 20 as compared with the manufacturing facility 100 illustrated in FIG. 3.
- the manufacturing equipment 200 further includes a transport belt 44 instead of the transport belt 42 as compared with the manufacturing equipment 100 shown in FIG.
- the other configuration of the manufacturing facility 200 is the same as that of the manufacturing facility 100 shown in FIG.
- the tube cutting device 25 is not disposed in the transport band 41 but is disposed in the transport band 44.
- the tube cutting device 25 includes cutting devices 251 and 252.
- the cutting device 251 is disposed on one side edge 44A of the two side edges 44A and 44B of the transport band 44.
- the cutting device 252 is disposed on the side opposite to the side on which the cutting device 251 is disposed, that is, on the side edge 44B.
- the cutting devices 251 and 252 are arranged so as to be shifted from each other in the transport direction D of the transport band 44.
- the cutting devices 251 and 252 include a clamp device and a disk-shaped knife saw.
- the cutting device 251 cuts one pipe end part 70A among the pipe end parts 70A and 70B of the metal pipe 70 conveyed in the radial direction by the conveyance band 44.
- the cutting device 252 cuts the other tube end portion 70 ⁇ / b> B of the metal tube 70.
- the two cutting devices 251 and 252 cut the pipe end portions 70A and 70B which are different from each other. Thereby, the time concerning the cutting process of the pipe end portions 70A and 70B of the metal pipe 70 can be shortened. Therefore, productivity can be improved when the cutting process of the pipe end portions 70A and 70B controls the manufacturing process.
- the transport band 44 includes the same configuration as the transport band 42.
- the transport band 44 further includes a position adjustment roller.
- the position adjusting roller is arranged corresponding to the arrangement position of the cutting device 251 and the arrangement position of the cutting device 252.
- the position adjusting rollers are arranged in the axial direction of the metal tube 70 at a position corresponding to the entrance side of the cutting device 251 in the transport band 44 (hereinafter referred to as an entrance side position).
- the position adjustment roller adjusts the positional relationship between the tube end 70A and the disk-shaped knife saw in the cutting device 251 by moving the metal tube 70 conveyed to the entrance side position of the cutting device 251 in the axial direction.
- the tube end portion 70A is disposed at the cutting position.
- the position adjusting roller is also arranged at the entrance side position of the cutting device 252, and conveys the tube end portion 70B to the cutting position.
- the manufacturing method of a metal tube using the manufacturing equipment 200 having the above configuration can be described by the same manufacturing flow as FIG.
- the metal tube 70 corrected by the correction machine 10 is transferred by the transfer band 41 (S2).
- zone 41 is moved to the conveyance belt
- the metal pipes 70 are arranged in the radial direction by the conveyance band 44 and conveyed in the radial direction.
- a tiltable stopper is disposed at the entry side position of the cutting device 251.
- the metal tube 70 stops at the position on the entry side of the cutting device 251 by the stopper.
- the transport band 44 moves the metal tube 70 arranged at the entrance position back and forth in the axial direction by the position adjusting roller, and transports the tube end portion 70A to the cutting position. After the pipe end portion 70A is arranged at the cutting position, the pipe end portion 70A is cut by the cutting device 251 (S3).
- the transport band 44 further transports the metal tube 70 with the tube end portion 70A cut to the entry side position of the cutting device 252 (S4).
- a kicker is provided at the entry side position of the cutting device 251.
- the stopper disposed at the entry side position of the cutting device 251 falls down, and the metal tube 70 is kicked out toward the transport band 43 by the kicker.
- the metal tube 70 again moves toward the transport band 43 while rolling on the inclined skid.
- a stopper that can be raised and lowered is provided at the entry side position of the cutting device 252, and the metal tube 70 is stopped by the stopper at the entry side position of the cutting device 252.
- the tube end portion 70B is conveyed to the cutting position by the position adjusting roller arranged at the entry side position of the cutting device 252. Thereafter, the tube end portion 70B is cut by the cutting device 252 (S5).
- the cutting operation of the tube end portion 70B of the metal tube 70 is performed by the cutting device 252
- the cutting operation of the tube end portion 70A of the other metal tube different from the metal tube 70 cut by the cutting device 252 is performed.
- This is performed by the cutting device 251. That is, when the metal tube 70 is cut by the cutting device 252, the other metal tube 70 arranged behind the metal tube 70 cut by the cutting device 252 is cut by the cutting device 251.
- the cutting operations of the plurality of metal tubes 70 are performed in parallel by the plurality of cutting devices 251 and 252. Since the pipe end cutting process takes time, the manufacturing process of the metal pipe can be easily controlled. Therefore, if parallel processing is performed using a plurality of cutting devices 251 and 252, the processing time of the cutting process of the pipe end portions 70A and 70B can be further shortened, and productivity is increased.
- the metal tube 70 whose tube end portion 70B has been cut is transported from the transport band 44 to the transport band 43.
- the transport band 44 transports the metal tube 70 in the axial direction toward the quenching device 30 (S6). Then, the metal tubes 70 arranged back and forth are brought into contact with each other and quenched (S7).
- the metal tube manufacturing method using the manufacturing facility 200 uses a plurality of cutting devices 251 and 252, so that the processing time of the tube end cutting process can be shortened and productivity can be increased.
- the metal tubes aligned in the axial direction are butted together and quenched.
- the front and rear metal tubes do not have to be abutted with each other during quenching. Even in such a case, a straight metal tube having a flat tube end surface can be quenched by bending correction and tube end cutting. Therefore, quenching defects typified by uneven baking can be suppressed to some extent.
- the structures of the above-described transport bands 42 and 44 are not particularly limited as long as the metal pipe can be transported in the radial direction.
- the transport belts 42 and 44 may include a chain conveyor capable of transporting the metal tube 70 in the radial direction instead of the above-described inclined skid, or may include a walking beam.
- the metal tube 70 may be transported in the radial direction by another known transport mechanism.
- the manufacturing facilities 100 and 200 may include devices other than the devices described above.
- the above-described tube cutting devices 20 and 25 include a clamp device and a disk-shaped knife saw.
- the structure of the tube cutting devices 20 and 25 is not particularly limited as long as the tube end portion of the metal tube can be cut flat.
- the tube cutting device is, for example, a tip saw, a tube cutting device using a grindstone, or the like.
- a so-called “burl” occurs on the cut surface. Therefore, when using these pipe cutting devices, it is preferable to further install a chamfering machine for removing burr.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Articles (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- General Induction Heating (AREA)
Abstract
Description
[設備装置の全体構成]
図1は、本実施形態による金属管の製造設備の全体構成図(レイアウト図)である。図1を参照して、製造設備100は、矯正機10と、管切断装置20と、焼入れ装置30と、搬送帯40とを備える。
本実施の形態による金属管の製造方法は、矯正機10により金属管の曲がりを矯正し、管切断装置20により金属管の両管端部を切断した後、焼入れ装置30により金属管を焼入れする。焼入れされる金属管は、曲がりが矯正されており、かつ、切断により管端面が凹凸を有さず、平坦である。そのため、先行材(先行の金属管)及び後続材(先行材の後続に並ぶ金属管)の管端を突き合わせたとき、先行材の後端と後続材の前端とが面接触しやすく、先行材及び後続材はあたかも一本の長い金属管のようになる。そのため、焼入れ時において、金属管全体を均一に加熱しやすく、焼きむら等の焼入れ不良が抑制される。以下、金属管の製造方法について詳述する。
第1の実施の形態では、1台の管切断装置20で、金属管の両管端部を切断する。しかしながら、複数の切断装置を設けて、金属管の前管端部及び後管端部の切断を、別個の切断装置により実施してもよい。
Claims (8)
- 矯正機により金属管の曲がりを矯正する工程と、
曲がりを矯正された前記金属管の両管端部を切断する工程と、
前記両管端部が切断された複数の前記金属管を焼入れ装置に搬送し、前記焼入れ装置において、前記金属管を誘導加熱により加熱した後冷却することにより焼入れする、金属管の製造方法。 - 請求項1に記載の製造方法であって、
前記焼入れ装置は、
前記焼入れ装置の入り側に配置される誘導加熱コイルと、
前記焼入れ装置の出側に配置され、冷却液を用いて前記金属管を冷却する冷却装置とを備え、
前記焼入れする工程では、前記焼入れ装置内において前後に並んだ金属管の管端同士を突き合わせて搬送する、金属管の製造方法。 - 請求項1又は請求項2に記載の製造方法であって、
前記製造方法に用いられる製造設備は、
前記矯正機と、
前記焼入れ装置と、
前記矯正機と前記焼入れ装置との間に配置され、曲がりを矯正された前記金属管を前記焼入れ装置に向かって搬送する搬送帯と、
前記搬送帯に配置され、曲がりを矯正された前記金属管の両管端部を切断する管切断装置とを備え、
前記切断する工程では、前記搬送帯により前記矯正機から搬送された前記金属管の両管端部を前記管切断装置で切断し、
前記焼入れする工程では、前記両管端部が切断された前記複数の金属管を前記搬送帯により前記焼入れ装置に搬送する、製造方法。 - 請求項3に記載の製造方法であって、
前記搬送帯は、
前記矯正機の出側に配置され、曲がりを矯正された前記金属管を、前記金属管の軸方向に搬送する第1搬送帯と、
前記第1搬送帯により搬送された前記金属管を、前記金属管の径方向に並べて前記径方向に搬送する第2搬送帯と、
前記焼入れ装置の入り側に配置され、前記第2搬送帯により搬送された前記金属管を、前記金属管の軸方向に、前記焼入れ装置まで搬送する第3搬送帯とを含み、
前記管切断装置は、
前記第2搬送帯で搬送される前記金属管の一端側に配置される第1切断装置と、
前記第2搬送帯で搬送される前記金属管の他端側に配置される第2切断装置とを含み、
前記切断する工程は、
前記第2搬送帯において、前記金属管を前記第1切断装置の切断位置まで搬送する工程と、
前記第1切断装置の切断位置において、前記第1切断装置により前記金属管の一方の管端部を切断する工程と、
前記一方の管端部を切断した後、前記第2搬送帯において、前記金属管を前記第2切断装置の切断位置まで搬送する工程と、
前記第2切断装置の切断位置において、前記第2切断装置により前記金属管の他方の管端部を切断する工程とを備える、製造方法。 - 請求項4に記載の製造方法であって、
前記切断する工程では、
前記第1切断装置により前記金属管の一方の管端部の切断作業が実施されるとき、前記第2切断装置により他の前記金属管の他方の管端部の切断作業が実施される、製造方法。 - 金属管の製造設備であって、
金属管の曲がりを矯正する矯正機と、
入り側に配置される誘導加熱コイルと、出側に配置される冷却装置とを備え、一列に並んで内部に搬送される複数の前記金属管を焼入れする焼入れ装置と、
前記矯正機と前記焼入れ装置との間に配置され、曲がりを矯正された前記金属管を前記焼入れ装置に向かって搬送する搬送帯と、
前記搬送帯に配置され、曲がりを矯正された前記金属管の両管端部を切断する切断装置とを備える、金属管の製造設備。 - 請求項6に記載の製造設備であって、
前記搬送帯は、
前記矯正機の出側に配置され、曲がりを矯正された前記金属管を、前記金属管の軸方向に搬送する第1搬送帯と、
前記第1搬送帯により搬送された前記金属管を、前記金属管の径方向に並べて前記径方向に搬送する第2搬送帯と、
前記焼入れ装置の入り側に配置され、前記第2搬送帯により搬送された前記金属管を、前記金属管の軸方向に、前記焼入れ装置まで搬送する第3搬送帯とを含み、
前記管切断装置は、
前記第2搬送帯で搬送される前記金属管の一端側に配置される第1切断装置と、
前記第2搬送帯で搬送される前記金属管の他端側に配置される第2切断装置とを含む、製造設備。 - 請求項7に記載の製造設備であって、
前記第1切断装置により前記金属管の一方の管端部の切断作業が実施されるとき、前記第2切断装置により当該他の前記金属管の他方の管端部の切断作業が実施される、製造設備。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13757536.1A EP2824197B1 (en) | 2012-03-09 | 2013-02-22 | Metal pipe manufacturing method and manufacturing equipment |
KR1020147019988A KR101541672B1 (ko) | 2012-03-09 | 2013-02-22 | 금속관의 제조 방법 및 제조 설비 |
MX2014009443A MX355281B (es) | 2012-03-09 | 2013-02-22 | Método de producción e instalación de producción de tubo de metal. |
BR112014014501-6A BR112014014501B1 (pt) | 2012-03-09 | 2013-02-22 | método de produção e instalação de produção de tubo de metal |
CN201380013349.2A CN104160047B (zh) | 2012-03-09 | 2013-02-22 | 金属管的制造方法和制造设备 |
US14/382,803 US9938602B2 (en) | 2012-03-09 | 2013-02-22 | Production method and production facility of metal pipe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012052956A JP5304915B2 (ja) | 2012-03-09 | 2012-03-09 | 金属管の製造方法及び製造設備 |
JP2012-052956 | 2012-03-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013133042A1 true WO2013133042A1 (ja) | 2013-09-12 |
Family
ID=49116524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/054460 WO2013133042A1 (ja) | 2012-03-09 | 2013-02-22 | 金属管の製造方法及び製造設備 |
Country Status (9)
Country | Link |
---|---|
US (1) | US9938602B2 (ja) |
EP (1) | EP2824197B1 (ja) |
JP (1) | JP5304915B2 (ja) |
KR (1) | KR101541672B1 (ja) |
CN (1) | CN104160047B (ja) |
AR (1) | AR090277A1 (ja) |
BR (1) | BR112014014501B1 (ja) |
MX (1) | MX355281B (ja) |
WO (1) | WO2013133042A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7299488B2 (ja) * | 2018-07-24 | 2023-06-28 | 日本製鉄株式会社 | 金属の熱処理方法及びその熱処理装置 |
CN109894665B (zh) * | 2019-04-15 | 2023-09-29 | 马鞍山市飞达波纹管制造有限公司 | 一种金属波纹管切割装置及其使用方法 |
CN113528772A (zh) * | 2021-08-23 | 2021-10-22 | 东莞市鑫迪机械设备有限公司 | 一种用于速冷淬火炉的冷却水套及其加工方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6029421A (ja) | 1983-07-29 | 1985-02-14 | Dai Ichi High Frequency Co Ltd | 金属管の連続熱処理方法及びそのための治具 |
JPS62246282A (ja) | 1986-04-16 | 1987-10-27 | 住友金属工業株式会社 | 加熱処理ラインにおける搬送制御方法 |
JPH04191324A (ja) * | 1990-11-27 | 1992-07-09 | Sumitomo Metal Ind Ltd | 真直度に優れる高強度鋼管の製造方法 |
JPH0754048A (ja) * | 1993-08-06 | 1995-02-28 | Nisshin Steel Co Ltd | 自動車ドア補強部材用高強度焼入れ鋼管の製造装置 |
JP2000017339A (ja) * | 1998-06-29 | 2000-01-18 | High Frequency Heattreat Co Ltd | 鋼棒又は鋼管の連続熱処理方法および装置 |
JP2003129128A (ja) * | 2001-10-25 | 2003-05-08 | High Frequency Heattreat Co Ltd | 鋼管の誘導加熱による連続焼入方法及び装置 |
JP2006233303A (ja) | 2005-02-28 | 2006-09-07 | High Frequency Heattreat Co Ltd | 誘導加熱による鋼管の連続熱処理装置 |
JP2010132999A (ja) * | 2008-12-08 | 2010-06-17 | Sumitomo Metal Ind Ltd | エアバッグ用鋼管とその製造方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB403684A (en) * | 1931-07-09 | 1933-12-27 | Republic Steel Corp | Improvements in or relating to a process of and an apparatus for making pipe, and the pipe produced thereby |
US3915763A (en) * | 1971-09-08 | 1975-10-28 | Ajax Magnethermic Corp | Method for heat-treating large diameter steel pipe |
JPS5317509A (en) * | 1976-08-03 | 1978-02-17 | Nippon Kokan Kk <Nkk> | Method and apparatus for induction heating of metallic material |
JPS5945732B2 (ja) * | 1977-02-08 | 1984-11-08 | 日本鋼管株式会社 | 長尺金属材料の熱処理方法及びその装置 |
JPS57100806A (en) * | 1980-12-16 | 1982-06-23 | Nippon Kokan Kk <Nkk> | Producing device for seamless steel pipe |
JPS5887226A (ja) * | 1981-11-18 | 1983-05-25 | Nippon Steel Corp | 鋼管の冷却方法及びその装置 |
JPS5941420A (ja) * | 1982-08-31 | 1984-03-07 | Nisshin Steel Co Ltd | 溶接鋼管の製造方法 |
ATE222152T1 (de) * | 1993-10-29 | 2002-08-15 | Danieli Off Mecc | Verfahren und vorrichtung zur thermischen oberflächenbehandlung eines stranges |
US6336980B1 (en) * | 1999-05-21 | 2002-01-08 | Danieli Technology, Inc. | Method for in-line heat treatment of hot rolled stock |
AR048214A1 (es) * | 2004-02-05 | 2006-04-12 | Sumitomo Metal Ind | Tubos de acero sin costura terminados en frio |
EP2578705B1 (en) * | 2010-06-03 | 2018-08-08 | Nippon Steel & Sumitomo Metal Corporation | Process for producing steel pipe for air bag |
-
2012
- 2012-03-09 JP JP2012052956A patent/JP5304915B2/ja active Active
-
2013
- 2013-02-22 EP EP13757536.1A patent/EP2824197B1/en active Active
- 2013-02-22 US US14/382,803 patent/US9938602B2/en active Active
- 2013-02-22 BR BR112014014501-6A patent/BR112014014501B1/pt active IP Right Grant
- 2013-02-22 MX MX2014009443A patent/MX355281B/es active IP Right Grant
- 2013-02-22 CN CN201380013349.2A patent/CN104160047B/zh active Active
- 2013-02-22 WO PCT/JP2013/054460 patent/WO2013133042A1/ja active Application Filing
- 2013-02-22 KR KR1020147019988A patent/KR101541672B1/ko active IP Right Grant
- 2013-03-07 AR ARP130100749A patent/AR090277A1/es active IP Right Grant
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6029421A (ja) | 1983-07-29 | 1985-02-14 | Dai Ichi High Frequency Co Ltd | 金属管の連続熱処理方法及びそのための治具 |
JPS62246282A (ja) | 1986-04-16 | 1987-10-27 | 住友金属工業株式会社 | 加熱処理ラインにおける搬送制御方法 |
JPH04191324A (ja) * | 1990-11-27 | 1992-07-09 | Sumitomo Metal Ind Ltd | 真直度に優れる高強度鋼管の製造方法 |
JPH0754048A (ja) * | 1993-08-06 | 1995-02-28 | Nisshin Steel Co Ltd | 自動車ドア補強部材用高強度焼入れ鋼管の製造装置 |
JP2000017339A (ja) * | 1998-06-29 | 2000-01-18 | High Frequency Heattreat Co Ltd | 鋼棒又は鋼管の連続熱処理方法および装置 |
JP2003129128A (ja) * | 2001-10-25 | 2003-05-08 | High Frequency Heattreat Co Ltd | 鋼管の誘導加熱による連続焼入方法及び装置 |
JP2006233303A (ja) | 2005-02-28 | 2006-09-07 | High Frequency Heattreat Co Ltd | 誘導加熱による鋼管の連続熱処理装置 |
JP2010132999A (ja) * | 2008-12-08 | 2010-06-17 | Sumitomo Metal Ind Ltd | エアバッグ用鋼管とその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20140105020A (ko) | 2014-08-29 |
EP2824197A4 (en) | 2015-11-18 |
JP5304915B2 (ja) | 2013-10-02 |
KR101541672B1 (ko) | 2015-08-06 |
US9938602B2 (en) | 2018-04-10 |
MX2014009443A (es) | 2014-10-24 |
EP2824197A1 (en) | 2015-01-14 |
BR112014014501B1 (pt) | 2018-11-06 |
EP2824197B1 (en) | 2017-08-09 |
JP2013185233A (ja) | 2013-09-19 |
AR090277A1 (es) | 2014-10-29 |
MX355281B (es) | 2018-04-12 |
CN104160047B (zh) | 2016-02-10 |
US20150068650A1 (en) | 2015-03-12 |
CN104160047A (zh) | 2014-11-19 |
BR112014014501A2 (pt) | 2017-06-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2010029943A (ja) | 鋼板の製造方法 | |
WO2013133042A1 (ja) | 金属管の製造方法及び製造設備 | |
JP5839410B2 (ja) | 熱処理システムおよび熱処理方法 | |
JP4373883B2 (ja) | 高周波熱処理方法及び高周波熱処理装置 | |
JP2013091111A (ja) | 展延済鋼成品の熱処理方法 | |
EP3255160B1 (en) | Steel pipe quenching method, steel pipe quenching apparatus, steel pipe production method, and steel pipe production equipment | |
CN112517648A (zh) | 钢材热加工系统及加工方法 | |
JP5421399B2 (ja) | 高周波誘導連続加熱方法及び高周波誘導連続加熱装置 | |
US9828647B2 (en) | Induction hardening apparatus and methods | |
JP5765684B2 (ja) | 熱処理方法 | |
JP5423122B2 (ja) | 油井管として用いられる拡管用のデュアルフェーズ鋼からなる電縫鋼管の熱処理方法及び熱処理設備 | |
JPS62161918A (ja) | 鋼管の熱処理ライン | |
KR101988284B1 (ko) | 소재처리장치 | |
KR100626800B1 (ko) | 열처리 시스템의 센터보정 장치 | |
JP2003073746A (ja) | 鋼板の熱処理方法およびその装置 | |
JPS63186830A (ja) | 鋼管の冷却方法 | |
JP2016109405A (ja) | 熱処理装置 | |
KR20110121937A (ko) | 개량된 이송롤러가 설치된 수평 이송식 고주파 열처리 장치 | |
CN111993054A (zh) | 钢材轧制线及加工方法 | |
JPS58107245A (ja) | 鋼管端部の加熱装置 | |
JP2009248271A (ja) | 鋼材の切断方法及び切断装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201380013349.2 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13757536 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20147019988 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2014/009443 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112014014501 Country of ref document: BR |
|
REEP | Request for entry into the european phase |
Ref document number: 2013757536 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013757536 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14382803 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 112014014501 Country of ref document: BR Kind code of ref document: A2 Effective date: 20140613 |