WO2015093675A1 - 강판의 사이드 트리밍 장치 및 방법 - Google Patents
강판의 사이드 트리밍 장치 및 방법 Download PDFInfo
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- WO2015093675A1 WO2015093675A1 PCT/KR2013/012209 KR2013012209W WO2015093675A1 WO 2015093675 A1 WO2015093675 A1 WO 2015093675A1 KR 2013012209 W KR2013012209 W KR 2013012209W WO 2015093675 A1 WO2015093675 A1 WO 2015093675A1
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- steel sheet
- laser beam
- laser
- unit
- processing unit
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0093—Working by laser beam, e.g. welding, cutting or boring combined with mechanical machining or metal-working covered by other subclasses than B23K
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- 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
- B23D19/00—Shearing machines or shearing devices cutting by rotary discs
- B23D19/04—Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs
-
- 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
- B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
-
- 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
- B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
- B23D31/002—Breaking machines, i.e. pre-cutting and subsequent breaking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
- B23K26/0619—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams with spots located on opposed surfaces of the workpiece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
- B23K26/0846—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt for moving elongated workpieces longitudinally, e.g. wire or strip material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/361—Removing material for deburring or mechanical trimming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
- B23K26/364—Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
Definitions
- the present invention relates to a side trimming apparatus and a method of a steel sheet for trimming side portions of the steel sheet before the rolling process of the steel sheet.
- the side trimming process of the steel sheet refers to a process of trimming the side portion of the steel sheet before rolling in a continuous cold rolling process of the steel sheet, which removes cracks and other defects at the edges of the hot rolled sheet, which causes sheet breakage during rolling. To be performed.
- FIG. 1 shows a side trimming device having a general structure
- FIG. 2 shows a side trimming mechanism of a steel sheet using the side trimming device of FIG. 1.
- the side trimming device has a configuration including rotary knives 1 and 2 disposed at the top and bottom to cut the edge portion of the steel sheet.
- the rotary knifes 1 and 2 are configured to rotate in the form of disks in accordance with the transfer of the steel sheet S, and the horizontal clearance a between the upper knife 1 and the lower knife 1 and 2, respectively.
- vertical clearance (b) are formed.
- the horizontal clearance (a) means a gap in which each rotary knife (1, 2) is separated from each other in the horizontal direction
- the vertical clearance (b) is a vertical clearance (b) is a vertical direction
- the steel sheet S is continuously cut through the rotary knifes 1 and 2 having horizontal and vertical clearances a and b so that the edge portion of the steel sheet S is cut by a certain amount.
- the rotary knife (1, 2) does not have a driving force of its own, it is rotated by the feed force of the steel sheet (S).
- the edge portion of the steel sheet S is cut by shearing and tearing through the upper and lower knives 1, 2.
- the rotary knifes 1 and 2 shear the steel sheet S by the set vertical clearance b.
- each crack (C) generated at the end of the rotary knife (1, 2) grows to meet at the center of the cut surface of the steel sheet (S) and finally the edge is cut.
- the side trimming of the steel sheet is performed by a breaking mechanism following shearing while the pair of rotary knives 1 and 2 apply pressure to the upper and lower surfaces of the steel sheet S.
- Continuous shearing of the steel plate being transported at high speed using such a mechanism causes continuous pressure and mechanical shock to be applied to the edges of the rotary knives 1 and 2 to cause breakage following wear. Therefore, the rotary knives 1 and 2 may be replaced when used for a certain period of time and may be reused after grinding.
- the present invention is to solve the above problems, and to provide a side trimming device and method that can perform side trimming of high strength steel at high speed.
- the present invention is installed on at least one side of the steel sheet to be transported, and a cutting unit for trimming the side of the steel sheet by mechanical cutting, and installed in front of the cutting unit and the laser to be cut portion of the steel sheet Disclosed is a side trimming device including a laser processing unit for irradiating a beam to form a groove in the portion to be cut or preheat the portion to be cut.
- the cutting unit includes a stand, an upper knife rotatably installed on the stand and disposed above the steel plate, and rotatably installed on the stand, It may have a configuration including a lower knife disposed to apply a shear force to the side of the steel plate with the upper knife.
- the laser processing unit includes a laser oscillator for generating a laser beam, and a condensing head installed on the stand and condensing the laser beam of the laser oscillator on the steel sheet.
- a laser oscillator for generating a laser beam
- a condensing head installed on the stand and condensing the laser beam of the laser oscillator on the steel sheet.
- the condensing head may be rotatably installed on the stand to adjust the irradiation position of the laser beam.
- the light collecting head may be provided on the upper side and the lower side of the steel sheet so as to irradiate a laser beam on the upper and lower surfaces of the steel sheet.
- the side trimming apparatus may further include a gas injection unit for injecting an auxiliary gas into the groove portion formed by the laser processing unit.
- the gas injection unit may have an inclination angle of 45 ° to 80 ° with respect to the direction perpendicular to the steel sheet.
- the side trimming apparatus may further include a control unit connected to the laser processing unit and controlling the laser movable unit to adjust the spot shape or size of the laser beam.
- the side trimming apparatus may further include a control unit connected to the laser processing unit and controlling a laser output of the laser preheating unit.
- the control unit may be configured to control the output of the laser processing unit so that the temperature of the cutting portion cut by the cutting unit has a range of 400 °C to 600 °C.
- the side trimming apparatus may further include an input unit connected to the control unit and receiving at least one of feed rate information and steel type information of the steel sheet from the main controller of the cold rolling line.
- the control unit can be configured to control the output of the laser processing unit based on the input information of the input unit.
- the present invention comprises the steps of transporting the steel sheet, forming a linear groove by irradiating a laser beam to the site trimming site of the steel sheet, and mechanically cutting the portion where the groove is formed to trim the side of the steel sheet
- a side trimming method comprising the steps of:
- the side trimming method may further include injecting an inert gas into the groove portion of the steel sheet when the groove is formed by irradiating a laser beam on the steel sheet.
- the present invention comprises the steps of transferring the steel sheet, the step of preheating the side trimming site by irradiating a laser beam to the site trimming site of the steel sheet, and mechanically cutting the pre-heating site to trim the side of the steel sheet
- a side trimming method comprising the steps of:
- the spot shape of the laser beam may be controlled so that the spot of the laser beam has a circular shape when the laser beam is irradiated.
- the spot shape of the laser beam when the laser beam is irradiated, the spot shape of the laser beam may be controlled so that the spot of the laser beam has a straight or ellipse shape having a longitudinal direction of the steel sheet in the transport direction.
- the preheating of the steel sheet may be made such that the cut portion temperature of the steel sheet has a range of 400 ° C to 600 ° C.
- the laser irradiation step receiving at least one of the feed rate information and steel type information of the steel sheet from the main controller of the cold rolling line, and based on the input information of the laser beam Controlling the output.
- the present invention having the configuration described above, by forming a groove or pre-heating a portion to be cut of the rotary knife locally with a laser to locally reduce the strength of the steel sheet, it is possible to reduce the shear load of the rotary knife, Through the continuous cold rolling process there is an effect that can be performed at the high-speed side trimming of high strength steel.
- the portion to be cut of the steel sheet may be locally heated or grooved in the form of a circular spot using a laser, a problem that may occur due to the wide preheating area may be prevented.
- FIG. 1 is a front view showing a side trimming device having a general structure.
- FIG. 2 is a conceptual diagram illustrating a side trimming mechanism using the side trimming apparatus of FIG. 1.
- FIG 3 is a perspective view showing a side trimming device according to an embodiment of the present invention.
- FIG. 4 is a front view of the side trimming device shown in FIG.
- FIG. 5 is a perspective view showing a side trimming device according to an embodiment of the present invention.
- FIG. 6 is a front view of the side trimming device shown in FIG. 5;
- FIG. 7 is a block diagram of the side trimming device shown in FIG.
- FIG. 3 is a perspective view illustrating a side trimming apparatus according to an embodiment of the present invention
- FIG. 4 is a front view of the side trimming apparatus illustrated in FIG. 3.
- the cutting unit 10 is installed on one side of the steel sheet S to be transferred, and has a configuration of trimming the side portion of the steel sheet S by mechanical cutting.
- the cutting unit 10 has a configuration including a stand 11, an upper knife 12, and a lower knife 13.
- the stand 11 is installed at the side of the steel plate S, and rotatably supports the upper and lower knives 12 and 13.
- the upper knife 12 is rotatably installed on the stand 11, and is disposed above the steel plate S.
- the lower knife 13 is rotatably installed on the stand 111, and is disposed below the steel plate S to apply shear force to the side portion of the steel plate S together with the upper knife 12.
- the upper and lower knives 12, 13 are in the form of disks and are rotatably connected to the stand 11 by means of a rotation shaft 14, respectively.
- the upper knife 12 and the lower knife 13 are arranged so that a horizontal clearance (a, see FIG. 1) and a vertical clearance (b, see FIG. 1) of a predetermined length are formed therebetween.
- the horizontal clearance (a) means a gap in which the upper and lower knives 12 and 13 are separated from each other in the horizontal direction
- the vertical clearance (b) indicates that the upper and lower knives 12 and 13 are vertical. It means a lap overlapping each other in the direction.
- the upper and lower knives 12 and 13 do not have their own driving force and are rotated by the conveying force of the steel sheet S, and the steel sheet S continuously passes through the upper and lower knives 12 and 113 of the steel sheet S.
- the side sites are cut by shearing and tearing.
- the laser processing unit 20 reduces the load applied to the cutting unit 10, in particular, the knife when the side of the steel sheet is cut by the cutting unit 10 by forming a groove of a predetermined depth in the steel sheet by irradiating the laser. give.
- the laser processing unit 20 has a configuration including a laser oscillator 21 and condensing heads 23 and 24.
- the laser oscillator 21 functions to generate and oscillate a laser.
- various types of laser oscillators such as a CW laser oscillator and a pulse laser oscillator, may be used, and lasers may be generated using various media such as gas, solid, and fiber lasers.
- the short wavelength laser has high absorption of the steel sheet S, it is advantageous to use the short wavelength laser in the groove processing or preheating of the steel sheet S in the processing of high strength steel.
- the condensing heads 23 and 24 serve to condense the laser beam L of the laser oscillator 21 onto the steel sheet S.
- An optical system composed of one or more lenses is provided inside the light collecting heads 23 and 24, and the light collecting heads 23 and 24 are connected to the laser oscillator 21 through light transmission means such as an optical fiber 22.
- the light collecting heads 22 and 23 may be provided on the upper side and the lower side of the steel sheet S to irradiate the laser beam L on the upper and lower surfaces of the steel sheet S, respectively.
- the laser generated by the laser oscillator 21 is irradiated to the upper and lower surfaces of the steel sheet S via the optical fiber 22 and the light collecting heads 23 and 24.
- 3 illustrates a case of using a fiber laser, but the present invention is not limited thereto, and other lasers may be used as described above.
- the size of the laser beam at the optical fiber output end is small enough that the light collecting heads 23 and 24 are not used.
- the light collecting heads 23 and 24 are used to ensure that the laser beam has a sufficient energy density on the surface of the steel sheet, and the final optical system is maintained at a sufficient distance from the steel sheet S so as not to be damaged by collision or heat.
- the focusing heads 23 and 24 having the focusing lens can be used to focus the laser beam in a very small area with high density.
- the laser beam focused at a high density is incident on the surface of the steel sheet S, part of the light energy is absorbed by the object, and the temperature of the steel sheet is increased due to the absorbed light energy.
- the amount of absorbed light energy is large enough, the portion irradiated with light is melted.
- the groove G can be processed in the steel sheet S by using such a melting phenomenon by light absorption.
- the side trimming device of the high strength steel of the present embodiment may further include a gas injection unit 30.
- the gas injection unit 30 includes an upper gas injection nozzle 31 and a lower gas injection nozzle 32 for discharging an auxiliary gas to the outside of the steel sheet to which the laser beam is irradiated to form a groove.
- Each of the gas injection nozzles 31 and 32 is connected to a gas storage unit and a gas supply line 33 not shown, and each gas injection nozzle 31 and 32 is perpendicular to the surface of the steel sheet S. And a predetermined angle ⁇ . Since the larger the angle relative to the vertical direction of the surface of the steel sheet (S), the easier the discharge of the melt, the angle ( ⁇ ) of each gas injection nozzle is preferably provided at 45 ° to 80 °.
- auxiliary gas used in each of the gas injection nozzles 31 and 32 may be made of an inert gas which does not cause a chemical reaction with the steel sheet.
- air, nitrogen (N 2), carbon dioxide (CO 2), argon (Ar), or the like may be used.
- the side trimming process using the high-strength steel side trimming device configured as described above is as follows.
- the laser beam transmitted up to the vicinity of the steel sheet S is irradiated to the surface of the steel sheet with high density by the focusing heads 23 and 24 including the focusing lens.
- the laser beam focused by the light collection heads 23 and 24 sufficiently high density is irradiated to predetermined points of the upper surface and the lower surface of the steel plate S, and the steel sheet irradiated with the laser beam is locally melted.
- the auxiliary gas is injected by the gas injection unit 30 provided at a direction perpendicular to the surface of the steel sheet S and at a predetermined angle ⁇ to remove the melt from the outside of the steel sheet S. If necessary, it is preferable that the laser beam irradiation positions of the upper and lower surfaces of the steel sheet S and the angles ⁇ of the gas injection nozzles 31 and 32 can be properly adjusted.
- the melt is removed to form grooves (G).
- the width (W) and depth (D) of the groove (G) can be adjusted by adjusting the spot size and energy density of the laser beam irradiated onto the steel sheet and the incident gas incident angle ( ⁇ ). Adjust the shear load to a minimum.
- the linear grooves G formed in the steel sheet S are transferred to the cutting positions of the upper and lower knives 12 and 13 according to the continuous movement of the steel sheet S, and the portion of the steel sheet in which the grooves G are formed is the upper knife. It is easily cut by the rotation of the 12 and the lower knife 13.
- the embodiment of the present invention focuses the laser beam on the cut portion of the steel sheet S by the rotary knife in advance to form the groove G, thereby reducing the shear load by the knife, thereby enabling high-speed trimming of high strength steel. can do.
- the laser beam can be focused in a spot shape that can be adjusted by using an optical refraction element such as a lens, when the laser beam transmitted in a predetermined manner is irradiated onto the steel sheet using the optical refraction element, the laser beam is absorbed. This is accompanied by a local melting phenomenon when the surface of the steel sheet is locally heated and the laser energy is sufficient.
- an optical refraction element such as a lens
- the melt may be removed and a groove is formed through the gas melt.
- Part (G) is formed locally has the effect of reducing the thickness of the steel sheet and because of the irregular fine shape of the inner surface of the crack (crack) is easy to be broken easily by the rotary knife is easy to be cut easily.
- the groove (G) is formed in advance using a laser even for high-strength steel, which cannot be used for high-speed side trimming, high-speed side trimming, which has not been possible in the past, is possible due to the reduction in thickness and the use of cracks caused by a knife. .
- FIG. 5 is a perspective view illustrating a side trimming apparatus according to another exemplary embodiment of the present invention
- FIG. 6 is a front view of the side trimming apparatus illustrated in FIG. 5.
- FIG. 7 is a block diagram of the side trimming apparatus shown in FIG. 5.
- the side trimming device also includes a cutting unit 110 and a laser processing unit 120 as in the previous embodiment.
- the cutting unit 110 has a configuration including a stand 111, an upper knife 112, and a lower knife 113, and the upper and lower knives 112 and 113 are attached to the stand 111 by rotating shafts 114 and 115, respectively. It is rotatably connected.
- the laser processing unit 120 is installed in front of the cutting unit 110, and serves to preheat the cutting scheduled portion by irradiating the laser beam (L) to the cutting scheduled portion of the steel sheet (S).
- the laser processing unit 120 has a configuration including a laser oscillator 121 and condensing heads 122 and 123, and the condensing heads 122 and 123 are connected to the laser oscillator 121 by an optical fiber 124.
- the side trimming apparatus of the present embodiment is configured such that the laser processing unit 120 preheats the cut scheduled portion without forming the grooves G (see FIG. 3) in the steel sheet S. Except for this, the other matters are the same as in the previous embodiment. Do. Therefore, the detailed configuration of the cutting unit 110 and the laser processing unit 120 has the same configuration as the previous embodiment, the description of the overlapping portion will be replaced with the previous embodiment.
- the light collecting heads 122 and 123 may have a structure supported by the stand 111, and in this case, the light collecting heads 122 and 123 may adjust the irradiation position of the laser beam L in the stand 111. It can be installed to be rotatable drive. In this case, a rotation driving unit 125 such as a motor for rotating driving the light collecting heads 122 and 123 may be provided between the light collecting heads 122 and 123 and the stand 111.
- a rotation driving unit 125 such as a motor for rotating driving the light collecting heads 122 and 123 may be provided between the light collecting heads 122 and 123 and the stand 111.
- control unit 130 for controlling the operation of the laser processing unit 120 may be connected to the laser processing unit 120.
- the controller 130 may control the laser processing unit 120 to adjust the spot shape or the size of the laser beam L, and for this purpose, the controller 130 is configured to control the optical systems of the light collecting heads 122 and 123.
- controller 130 may be configured to control the laser output of the laser processing unit 120, specifically, the laser oscillator 121.
- the side trimming apparatus of the present embodiment may further include an input unit 140 for receiving feed rate information, steel type information, etc. of the steel sheet S from the main controller of the cold rolling line, and the controller 130 may include the input unit 140.
- the controller 130 may be configured to control the output of the laser oscillator 121 based on at least one of the feed rate information and the steel type information of the steel sheet S.
- 8 and 9 are diagrams illustrating a side trimming method according to an embodiment of the present invention. 8 and 9 show side and top views, respectively, of the side trimming apparatus applied to the side trimming method of the present embodiment.
- the site trimming scheduled portion of the steel sheet S is irradiated with a laser beam L to preheat the side trimming scheduled portion.
- the spot 151 of the laser beam L may be controlled such that the spot of the laser beam L has a circular shape as shown in FIG. 9.
- the controller 130 may control the light collecting heads 122 and 123 such that the spot 151 of the laser beam L has a circular shape.
- the spot 151 of the laser beam can be controlled in a circular manner to locally heat the portion to be cut of the steel sheet S.
- the width of the preheating portion can be minimized, thereby preventing a problem (for example, a problem of varying strength characteristics during cooling of the steel sheet) due to the wide preheating area.
- Preheating line 150 is formed.
- the preheating line 10 is to be transferred to the cutting positions of the upper and lower knives 112 and 113.
- the upper and lower knives 112 and 113 mechanically cut the preheating portion formed by the laser beam L, that is, the preheating line 150 to trim the side portion of the steel sheet S.
- the shear load of the upper and lower knives 112 and 113 can be reduced by focusing and preheating the laser beam L to the region to be cut of the steel sheet S to locally lower the intensity of the preheated portion, thereby providing high speed of high strength steel. Trimming is possible.
- the laser beam spot You can adjust the shape, size and more.
- the rotation angles of the light collecting heads 122 and 123 may be adjusted to adjust the irradiation position of the laser beam, that is, the distances D1 and D2 from the mechanical cutting point to the laser irradiation position.
- the rotation angle control of the light collecting heads 122 and 123 may be performed by the controller 130 controlling the amount of rotation of the rotation driver 125.
- 10 and 11 illustrate a side trimming method according to another exemplary embodiment of the present invention.
- 10 and 11 show a side view and a plan view, respectively, of a side trimming device applied to the side trimming method of the present embodiment.
- the shape of the spot 151 of the laser beam L is controlled such that the spot 151 of the laser beam L has an elliptic shape.
- the ellipse is formed to have the conveying direction of the steel sheet (S) in the longitudinal direction, and the spot of the laser beam (L) in a straight form having the conveying direction of the steel sheet (S) in the longitudinal direction as well as the ellipse shape as in the present embodiment It is also possible to control the shape.
- the spot 151 shape control of the laser beam L may be performed by the controller 130 controlling the optical systems of the light collecting heads 122 and 123.
- the preheating area can be increased, thereby maintaining the temperature of the preheating site to a position close to the cutting site.
- FIG. 12 is a graph showing the change in strength according to the temperature of high strength steel using a high temperature tensile strength measuring apparatus.
- the strength is gradually reduced while the temperature of the steel sheet (S) is 400 °C or more.
- the temperature of the steel sheet reaches 600 °C, the strength is reduced to 25% compared to the strength at room temperature.
- the softening temperature range is 400 to 600 ° C.
- the local preheating at the softening temperature of 400 to 600 ° C. using a laser greatly reduces the shear load of the upper and lower knives 112 and 113. have.
- control unit 130 is configured to control the output of the laser processing unit 120 so that the temperature of the cutting portion cut by the cutting unit 110 has a range of 400 ° C to 600 ° C.
- the temperature of the cut part is lower than 400 ° C., the yield stress does not decrease and thus the effect of shear load reduction cannot be obtained. If the temperature of the cut part is higher than 600 ° C., the material change occurs due to transformation after cooling, and thus the preheat temperature It is most preferable to have the range of 400-600 degreeC.
- side trimming apparatus and method of the steel sheet described above are not limited to the configuration and method of the above-described embodiments, but the above embodiments may be configured by selectively combining all or some of the embodiments so that various modifications may be made. In addition, various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention.
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Abstract
Description
Claims (18)
- 이송되는 강판의 적어도 일측에 설치되며, 기계적 절단에 의해 상기 강판의 사이드를 트리밍하는 절단 유닛; 및상기 절단 유닛의 전방에 설치되며, 상기 강판의 절단 예정 부위에 레이저 빔을 조사하여 상기 절단 예정 부위에 홈을 형성하거나 상기 절단 예정 부위를 예열하는 레이저 가공 유닛을 포함하는 사이드 트리밍 장치.
- 제1항에 있어서, 상기 절단 유닛은,스탠드;상기 스탠드에 회전 가능하게 설치되며, 상기 강판의 상측에 배치되는 상부 나이프; 및상기 스탠드에 회전 가능하게 설치되며, 상기 강판의 하측에 배치되어 상기 상부 나이프와 함께 상기 강판의 사이드에 전단력을 인가하는 하부 나이프를 포함하는 것을 특징으로 하는 사이드 트리밍 장치.
- 제2항에 있어서, 상기 레이저 가공 유닛은,레이저 빔을 발생시키는 레이저 발진기; 및상기 스탠드에 설치되며, 상기 레이저 발진기의 레이저 빔을 상기 강판에 집광시키는 집광헤드를 포함하는 것을 특징으로 하는 사이드 트리밍 장치.
- 제3항에 있어서,상기 집광헤드는 상기 레이저 빔의 조사 위치를 조절할 수 있도록 상기 스탠드에 회전 구동 가능하게 설치되는 것을 특징으로 하는 사이드 트리밍 장치.
- 제3항에 있어서,상기 집광헤드는 상기 강판의 상하면에 레이저 빔을 조사하도록 상기 강판의 상측과 하측에 각각 구비되는 것을 특징으로 하는 사이드 트리밍 장치.
- 제1항에 있어서,상기 레이저 가공 유닛에 의해 형성된 홈 부위에 보조가스를 분사하는 가스분사유닛을 더 포함하는 것을 특징으로 하는 사이드 트리밍 장치.
- 제6항에 있어서,상기 가스분사유닛은 상기 강판에 수직한 방향에 대해 45°∼80°의 경사각을 갖는 것을 특징으로 하는 사이드 트리밍 장치.
- 제1항에 있어서,상기 레이저 가공 유닛에 연결되며, 상기 레이저 빔의 스팟 형상 또는 크기를 조절하도록 상기 레이저 가공 유닛을 제어하는 제어부를 더 포함하는 것을 특징으로 하는 사이드 트리밍 장치.
- 제1항에 있어서,상기 레이저 가공 유닛에 연결되며, 상기 레이저 예열유닛의 레이저 출력을 제어하는 제어부를 더 포함하는 것을 특징으로 하는 사이드 트리밍 장치.
- 제9항에 있어서,상기 제어부는 상기 절단 유닛이 커팅하는 절단 부위의 온도가 400℃ 내지 600℃의 범위를 갖도록 상기 레이저 가공 유닛의 출력을 제어하는 것을 특징으로 하는 사이드 트리밍 장치.
- 제9항에 있어서,상기 제어부에 연결되며, 냉연라인의 메인 컨트롤러로부터 상기 강판의 이송속도 정보 및 강종 정보 중 적어도 하나를 입력받는 입력부를 더 포함하고,상기 제어부는 상기 입력부의 입력 정보를 근거로 상기 레이저 가공 유닛의 출력을 제어하는 것을 특징으로 하는 사이드 트리밍 장치.
- 강판을 이송시키는 단계;상기 강판의 사이트 트리밍 예정 부위에 레이저 빔을 조사하여 선형의 홈을 형성하는 단계; 및상기 홈이 형성된 부위를 기계적으로 절단하여 상기 강판의 사이드를 트리밍하는 단계를 포함하는 사이드 트리밍 방법.
- 제12항에 있어서,상기 강판에 레이저 빔을 조사하여 홈을 형성할 때, 상기 강판의 홈 부위에 비활성가스를 분사하는 단계를 더 포함하는 것을 특징으로 하는 사이드 트리밍 방법.
- 강판을 이송시키는 단계;상기 강판의 사이트 트리밍 예정 부위에 레이저 빔을 조사하여 사이드 트리밍 예정 부위를 예열하는 단계; 및상기 사전 예열 부위를 기계적으로 절단하여 상기 강판의 사이드를 트리밍하는 단계를 포함하는 사이드 트리밍 방법.
- 제14항에 있어서,상기 레이저 빔의 조사시 상기 레이저 빔의 스팟이 원형 형상을 갖도록 상기 레이저 빔의 스팟 형상을 제어하는 것을 특징으로 하는 사이드 트리밍 방법.
- 제14항에 있어서,상기 레이저 빔의 조사시 상기 레이저 빔의 스팟이 상기 강판의 이송 방향을 길이 방향으로 갖는 직선 또는 타원 형상을 갖도록 상기 레이저 빔의 스팟 형상을 제어하는 것을 특징으로 하는 사이드 트리밍 방법.
- 제14항에 있어서,상기 강판의 예열은 상기 강판의 절단 부위 온도가 400℃ 내지 600℃의 범위를 갖도록 이루어지는 것을 특징으로 하는 사이드 트리밍 방법.
- 제14항에 있어서, 상기 레이저 조사 단계는,냉연 라인의 메인 컨트롤러로부터 상기 강판의 이송속도 정보 및 강종 정보 중 적어도 하나를 입력받는 단계; 및상기 입력 정보를 근거로 상기 레이저 빔의 출력을 제어하는 단계를 포함하는 것을 특징으로 하는 사이드 트리밍 방법.
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JP2016541380A JP6272490B2 (ja) | 2013-12-18 | 2013-12-26 | 鋼板のサイドトリミング装置および方法 |
US15/106,232 US10328520B2 (en) | 2013-12-18 | 2013-12-26 | Apparatus and method for trimming a side of steel plate |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3482843A4 (en) * | 2016-07-11 | 2019-06-05 | Posco | APPARATUS FOR CUTTING MATERIAL AND SYSTEM FOR CUTTING MATERIAL |
Families Citing this family (6)
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KR102098440B1 (ko) * | 2016-12-23 | 2020-04-07 | 주식회사 포스코 | 사이드 트리밍 장치 |
CN110434390B (zh) * | 2019-07-19 | 2021-08-03 | 山东钢铁集团有限公司 | 一种形状不规则钢板的在线定尺智能分段剪切系统,方法及剪切设备 |
JP7434120B2 (ja) * | 2020-09-16 | 2024-02-20 | 株式会社東芝 | 光学加工装置 |
KR102439498B1 (ko) * | 2021-07-09 | 2022-09-02 | 디에스스틸(주) | 금속성분 분석이 가능한 금속 절단장치 |
CN115383463A (zh) * | 2022-08-22 | 2022-11-25 | 祝桥金属材料启东有限公司 | 一种便于调整的带钢切边机 |
CN115519259B (zh) * | 2022-10-22 | 2024-05-24 | 长沙大科激光科技有限公司 | 一种高频电流辅助双光束激光切割方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02133281U (ko) * | 1989-04-11 | 1990-11-06 | ||
JPH09108800A (ja) * | 1995-10-13 | 1997-04-28 | Nippon Steel Corp | 薄板連続鋳造における金属薄板切断方法 |
KR20100107814A (ko) * | 2009-03-26 | 2010-10-06 | 현대제철 주식회사 | 레이저 절단기 및 이를 구비하는 절단장치 |
KR20110000406A (ko) * | 2009-06-26 | 2011-01-03 | 현대제철 주식회사 | 절단속도에 따라 레이저 출력을 제어하는 레이저 절단 장치 및 그 방법 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4857697A (en) * | 1987-01-21 | 1989-08-15 | Metal Box Public Limited Company | Continuous seam welding apparatus and methods |
JPS6487091A (en) * | 1987-09-28 | 1989-03-31 | Ishikawajima Harima Heavy Ind | Shearing method and device |
JP3635688B2 (ja) * | 1994-09-07 | 2005-04-06 | Jfeスチール株式会社 | オーステナイト系ステンレス鋼帯のサイドトリミング方法とその装置 |
JP3635199B2 (ja) | 1997-03-28 | 2005-04-06 | 新日本製鐵株式会社 | 熱間圧延鋼片の突合せ溶接用レーザ溶接ノズル |
JP2000158162A (ja) * | 1998-11-20 | 2000-06-13 | Kobe Steel Ltd | レーザ切断溶接方法及びその装置 |
DE102004002504B4 (de) * | 2004-01-17 | 2006-03-23 | Wieland-Werke Ag | Verfahren zum gratfreien Trennen von Halbzeug aus duktilem Material und dessen Verwendung |
EP1591547B1 (en) * | 2004-04-27 | 2007-12-26 | Hitachi Metals, Ltd. | Steel strip for a replacement blade and manufacturing method therefor |
JP2007031200A (ja) * | 2005-07-27 | 2007-02-08 | Allied Material Corp | カッターホイール |
JP2007152936A (ja) * | 2005-11-09 | 2007-06-21 | Nikken Dia:Kk | 脆性材料用のホイールカッター |
BRPI1008994B1 (pt) | 2009-03-11 | 2020-12-22 | Nippon Steel Corporation | método para produção de chapa de aço elétrica com grão orientado |
KR101221828B1 (ko) | 2010-08-20 | 2013-01-15 | 한국기계연구원 | 레이저 가공장치 및 이를 이용한 웨이퍼 다이싱 방법 |
CN203236531U (zh) | 2013-02-01 | 2013-10-16 | 四川虹视显示技术有限公司 | Oled基板切割系统 |
-
2013
- 2013-12-26 EP EP13899855.4A patent/EP3085465B9/en active Active
- 2013-12-26 CN CN201380081751.4A patent/CN105828965B/zh active Active
- 2013-12-26 JP JP2016541380A patent/JP6272490B2/ja active Active
- 2013-12-26 WO PCT/KR2013/012209 patent/WO2015093675A1/ko active Application Filing
- 2013-12-26 US US15/106,232 patent/US10328520B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02133281U (ko) * | 1989-04-11 | 1990-11-06 | ||
JPH09108800A (ja) * | 1995-10-13 | 1997-04-28 | Nippon Steel Corp | 薄板連続鋳造における金属薄板切断方法 |
KR20100107814A (ko) * | 2009-03-26 | 2010-10-06 | 현대제철 주식회사 | 레이저 절단기 및 이를 구비하는 절단장치 |
KR20110000406A (ko) * | 2009-06-26 | 2011-01-03 | 현대제철 주식회사 | 절단속도에 따라 레이저 출력을 제어하는 레이저 절단 장치 및 그 방법 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3085465A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3482843A4 (en) * | 2016-07-11 | 2019-06-05 | Posco | APPARATUS FOR CUTTING MATERIAL AND SYSTEM FOR CUTTING MATERIAL |
US11484925B2 (en) | 2016-07-11 | 2022-11-01 | Posco | Apparatus for cutting material and system for cutting material |
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US10328520B2 (en) | 2019-06-25 |
CN105828965A (zh) | 2016-08-03 |
CN105828965B (zh) | 2019-09-06 |
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