WO2018186501A1 - マーキングシステムおよびマーキング方法 - Google Patents

マーキングシステムおよびマーキング方法 Download PDF

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Publication number
WO2018186501A1
WO2018186501A1 PCT/JP2018/014819 JP2018014819W WO2018186501A1 WO 2018186501 A1 WO2018186501 A1 WO 2018186501A1 JP 2018014819 W JP2018014819 W JP 2018014819W WO 2018186501 A1 WO2018186501 A1 WO 2018186501A1
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WIPO (PCT)
Prior art keywords
paint
steel material
marking
steel
heating
Prior art date
Application number
PCT/JP2018/014819
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English (en)
French (fr)
Japanese (ja)
Inventor
雅樹 宮下
一臣 富田
Original Assignee
新日鐵住金株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 新日鐵住金株式会社 filed Critical 新日鐵住金株式会社
Priority to KR1020197019264A priority Critical patent/KR20190092488A/ko
Priority to CN201880005997.6A priority patent/CN110167689A/zh
Priority to JP2019511328A priority patent/JP6874830B2/ja
Publication of WO2018186501A1 publication Critical patent/WO2018186501A1/ja

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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
    • B23K26/362—Laser etching
    • 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
    • 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
    • B21C51/005—Marking devices
    • 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

Definitions

  • the present invention relates to a marking system and a marking method, and is particularly suitable for laser marking on a steel material.
  • marking is performed on a steel material for management in a steel material production line.
  • the steel production line includes a line that handles high-temperature steel and normal-temperature steel, but it was difficult to mark with one marking device, so it is necessary to install multiple marking devices on the same line, There was a problem in installation space and cost. Therefore, a technique for marking a high-temperature steel material and a normal-temperature steel material with a single marking device is desired.
  • Patent document 1 describes that a paint spraying amount adjusting unit that adjusts the spraying amount of the paint by the paint spraying mechanism is provided.
  • Patent Document 1 has proposed a measure by controlling the film thickness of the paint with the object that the paint becomes thin when marking high-temperature steel. Therefore, in this method, since the paint is not sufficiently dried and baked in the steel at room temperature, the marking contrast and the environmental resistance are lowered. Applying hot air to dry is one of the possible countermeasures, but depending on the drying method, the paint will flow unevenly, and the thickness of the paint will change depending on the location of the steel, resulting in poor color development. . In some cases, the paint used for marking is properly used depending on the temperature of the steel material. For example, for a cold-rolled temperature steel, a paint using an organic solvent is used, and for a hot-rolled temperature steel, a water-soluble paint is used. .
  • the present invention has been made in view of the problems as described above, and prevents the deterioration of workability, while the marking caused by one kind of paint is applied to both cold and hot steel materials.
  • the purpose is to improve quality.
  • the marking system of the present invention is a marking system that performs marking on steel materials in a plurality of different temperature zones, and an application unit that applies a base paint that is a water-soluble paint to a predetermined region of the steel material, Heating means for heating the steel material to which the base paint is applied by an application means; and the base applied to the steel material after the heating by the heating means and the application of the base paint by the application means are performed.
  • the steel material after the coating material or the coating material is applied by the coating means, and the base coating material applied to the steel material at a predetermined temperature above normal temperature is irradiated with laser light to And a marking creating means for performing at least one of peeling, carbonization, and thermal discoloration of a part of the base paint.
  • the marking method of the present invention is a marking method for marking a steel material in a plurality of different temperature zones, and an application step of applying a base paint that is a water-soluble paint to a predetermined region of the steel material,
  • the heating step of heating the steel material coated with the base coating in the coating step, and the base coated on the steel after the heating in the heating step and the application of the base coating in the coating step are performed.
  • a marking preparation step for performing at least one of peeling, carbonization, and thermal discoloration of a part of the base coating.
  • FIG. 1 is a diagram illustrating an example of a configuration of a laser marking system for a cold / hot line.
  • FIG. 2 is a diagram illustrating an example of a specific configuration of the paint spraying mechanism.
  • FIG. 3 is a flowchart for explaining an example of the operation of each device when spraying the base paint.
  • FIG. 4 is a diagram illustrating an example of a specific configuration of the induction heater.
  • FIG. 5 is a flowchart for explaining an example of the operation of each device when induction heating a steel bar.
  • FIG. 6 is a diagram illustrating an example of a specific configuration of the laser marker.
  • FIG. 7 is a flowchart for explaining an example of the operation of each apparatus when performing laser marking.
  • FIG. 8 is a diagram showing a modification of the configuration of the laser marking system for the cold / hot line.
  • the high temperature is a temperature equal to or higher than a predetermined value (for example, a temperature set in advance in a range of 250 ° C. to 400 ° C.). In the present embodiment, the high temperature is a temperature of 250 ° C.
  • the normal temperature is a temperature in a predetermined range lower than the high temperature (for example, a range from 0 ° C. to 100 ° C., a range from 0 ° C. to less than 250 ° C., etc.).
  • the marking may be, for example, a character, a symbol, or a barcode. Also, at least two of these may be combined.
  • FIG. 1 is a diagram illustrating an example of a configuration of a laser marking system.
  • the x, y, and z coordinates shown in each figure are for showing the relationship of the orientation in each figure.
  • the circles marked with ⁇ indicate the direction from the back side of the page toward the near side, and those marked with a circles indicate the direction from the near side of the page to the far side. Indicates direction.
  • the structure of each part is simplified or abbreviate
  • the laser marking system includes a material conveyance mechanism 110, a material fixing base 120, a process control device 130, a paint spraying mechanism 160, an induction heater 170, and a laser marker 180.
  • the material transport mechanism 110 has a walking beam, for example.
  • the first material fixing gantry 120a and the second material fixing gantry 120b are the same, and are arranged with a gap in the longitudinal direction (y-axis direction) of the steel bars 100a to 100c, as shown in FIG.
  • the steel bars 100a to 100c are supported by the first material fixing base 120a and the second material fixing base 120b.
  • the material transport mechanism 110 (walking beam) moves a plurality of steel bars 100a to 100c placed on the first material fixing base 120a and the second material fixing base 120b upward from the lower side (positive direction of the z axis). ) And repeatedly moving the plurality of steel bars 100a to 100c downstream (in the positive direction of the x-axis). As described above, the plurality of steel bars 100 a to 100 c are transported by the material transport mechanism 110. In the following description, regarding a steel bar, when specific steel bars 100a to 100c are not indicated, these are indicated as a steel bar 100 as necessary.
  • the paint spraying mechanism 160, the induction heater 170, and the laser marker 180 are respectively connected to the bar steel.
  • the processing described later is performed on 100.
  • a plurality of steel bars placed in front of the paint spraying mechanism 160 are shown as a steel bar group 100A
  • a plurality of steel bars placed in front of the induction heater 170 are shown as a steel bar group 100B
  • a plurality of steel bars placed in front of the laser marker 180 are shown as a steel bar group 100C.
  • the first material fixing base 120a and the second material fixing base 120b support and fix the bar steel 100 at a predetermined position located in front of the paint spraying mechanism 160, the induction heater 170, and the laser marker 180. Preferably it is configured.
  • the bar steel 100 is processed in the order of the paint spraying mechanism 160, the induction heater 170, and the laser marker 180.
  • laser marking is performed to improve the quality of the marking. That is, the induction heater 170 heats the surface of the steel bar 100, but cannot heat the core (inside) of the steel bar 100, so the steel bar 100 is immediately cooled. Therefore, in order to dry the base paint, heating by the induction heater 170 is performed after the base paint is applied by the paint spraying mechanism 160. Therefore, in the present embodiment, the bar steel 100 is processed in the order of the paint spraying mechanism 160, the induction heater 170, and the laser marker 180.
  • the process control device 130 is an information processing device for managing the operation of the cold / hot line.
  • the process control device 130 outputs information on the conveyance state of the plurality of steel bars 100 to the conveyance mechanism control device 111.
  • the process control device 130 sends information necessary for processing in the paint spraying mechanism 160, the induction heater 170, and the laser marker 180 to the paint spray control device 161, the induction heater control device 171 and the laser marker control device 181 respectively. Output.
  • the conveyance mechanism control device 111 derives the operation start timings of the paint spraying mechanism 160, the induction heater 170, and the laser marker 180 from the information on the conveyance state of the plurality of steel bars 100, respectively.
  • the transport mechanism control device 111 causes the paint spray control device 161, the induction heater control device 171 and the laser marker control device 181 to start the operations of the paint spray mechanism 160, the induction heater 170 and the laser marker 180, respectively.
  • the instructions are given.
  • the paint spraying control device 161, the induction heater control device 171 and the laser marker control device 181 start the operations of the paint spraying mechanism 160, the induction heater 170 and the laser marker 180 based on the instruction to start this operation, respectively.
  • the operation of the paint spraying mechanism 160, the induction heater 170, and the laser marker 180 is controlled according to instructions from the control device 130.
  • FIG. 2 is a diagram illustrating an example of a specific configuration of the paint spraying device.
  • the paint spraying device includes a paint spraying mechanism 160 and a paint spraying control device 161.
  • the paint spraying mechanism 160 includes paint spraying nozzles 162a to 162d and a nozzle position control mechanism 163.
  • the nozzle position control mechanism unit 163 moves the paint spray nozzles 162a to 162d to locations where instructions are received from the process control device 130.
  • the paint spray nozzles 162a to 162d spray the base paint onto the end faces of the steel bars 100 placed in front of the steel bars 100a to 100p.
  • the (direction) position is substantially the same.
  • the nozzle position control mechanism 163 moves the paint spray nozzles 162a to 162d up, down, left and right to spray the base paint from the paint spray nozzles 162a to 162d, so that the number of steel bars 100 is larger than the number of nozzles. It is also possible to spray the base paint.
  • the base paint is a water-soluble paint excellent in heat resistance and weather resistance.
  • a paint using an organic solvent is a combustible material, contains a substance harmful to the human body, or causes a deterioration in workability such as a nozzle being easily clogged. Therefore, in the present embodiment, a water-soluble paint is used as the base paint. Thereby, the fall of workability
  • a high-temperature heat-resistant paint called NRC1000 manufactured by Nireco Corporation can be used as the base paint. Water-soluble paints are not dangerous materials because they do not use flammable materials, and are easy to handle.
  • the base paint can be appropriately fixed even to the cold bar steel.
  • the base paint does not peel off due to the heat of the steel bar 100 or the induction heater 170 described later (that is, the heat resistance temperature of the base paint is higher than the temperature of the bar steel 100 after being heated by the induction heater 170), and will be described later.
  • the base coating material is not limited to NRC1000 manufactured by Nireco Co., Ltd., as long as it is a high-temperature heat-resistant coating material capable of at least one of peeling, carbonization, and thermal discoloration of the base coating material by the laser light generated by the laser beam generator 182.
  • the heat resistance temperature of the base coating material is higher than the upper limit temperature of the steel bar 100 (the upper limit value of the temperature of the steel bar 100 in the specification).
  • FIG. 2 in order to shorten the spraying time, a system for spraying the base paint using four paint spraying nozzles 162a to 162d is presented. Also good.
  • FIG. 3 is a flowchart for explaining an example of the operation of each device when spraying the base paint.
  • the process control apparatus 130 issues a material conveyance instruction to the conveyance mechanism control apparatus 111.
  • the material transport mechanism 110 moves each of the plurality of steel bars 100 to a position downstream of the current position in accordance with the control by the transport mechanism control device 111, and the steel bar at the position. It stops for a certain period of time while 100 is supported and fixed.
  • step S303 the process control device 130 issues a paint spraying instruction including the size, number, and material position of the steel bar 100 to the paint spraying control device 161.
  • the material position is a position where the steel bar 100 is placed.
  • step S302 when the position of the material fixing base 120 in each of the plurality of steel bars 100 is changed and the transport of the plurality of steel bars 100 is completed, the transport mechanism control device 111 notifies the paint spraying control device 161 of the completion of the steel bar transport. Instruct.
  • the nozzle position control mechanism unit 163 detects the material position indicated by the process control device 130 according to the nozzle position control by the paint spraying control device 161. At least one of the paint spray nozzles 162a to 162d is moved to a predetermined facing position (in front of the end face of the steel bar 100 at a predetermined position in front of the paint spraying mechanism 160).
  • step S306 the paint spray nozzles 162a, 162b, 162c, or 162d in front of the steel bar 100 spray the base paint onto the steel bar 100.
  • the transport mechanism control device 111 performs the paint spraying completion of the steel bar transportation. The control device 161 is instructed.
  • step S307 the paint spraying control device 161 determines whether or not the processes in steps S305 and S306 have been performed for the number (number of spraying commands) designated by the process control device 130. Then, the processes in steps S305 to S307 are repeated until the processes in steps S305 and S306 are performed for the number instructed by the process control device 130. Then, when the processes in steps S305 and S306 are performed for the number instructed by the process control device 130, the paint spraying control device 161 transmits spraying completion to the process control device 130. In step S308, when the process control device 130 receives the completion of spraying, the processing according to the flowchart of FIG. 3 ends.
  • FIG. 4 is a diagram illustrating an example of a specific configuration of the induction heater 170.
  • the induction heater 170 has an induction heater coil 172.
  • the induction heater coil 172 is disposed such that its coil surface (a surface perpendicular to the winding axis) is substantially opposite to the end surface of the steel bar 100 supported by the first material fixing frame 120a and the second material fixing frame 120b. Is done.
  • the magnetic flux generated from the induction heater coil 172 penetrates the end faces of the plurality of steel bars 100a to 100p, and simultaneously guides the end faces of the plurality of steel bars 100a to 100p. It can be heated.
  • the heating time by the induction heater coil 172 and the temperature of the steel bar 100 after the heating are adjusted off-line so as to meet the specification temperature range of the base paint.
  • the induction heater coil 172 is set so that the temperature of the end surface of the steel bar 100 becomes a temperature at which the base coating can be dried. It is preferred that the effective value and frequency of the alternating current flowing through the are determined. Since the temperature of the end surface of the steel bar 100 also depends on the heating time, the effective value and frequency of the alternating current are determined in consideration of the heating time.
  • FIG. 5 is a flowchart for explaining an example of the operation of each device when induction heating the steel bar 100.
  • the induction heater 170 may not be heated.
  • the induction heater control device 171 receives information on the temperature of the steel bar 100 being conveyed from the process control device 130, and determines whether or not the induction heater 170 is to be heated based on this information.
  • the high temperature here is more than the predetermined temperature which can dry a base coating material before a laser beam is irradiated to the end surface of the steel bar 100 by the laser marker 180 mentioned later.
  • the predetermined temperature for example, an assumed value (target value) of the temperature of the steel bar 100 after being heated by the induction heater 170 can be adopted.
  • the paint or baking can be reliably performed by heating with the induction heater 170 regardless of the low temperature or the high temperature.
  • step S501 the process control device 130 issues a material transfer instruction to the transfer mechanism control device 111.
  • step S502 the material transport mechanism 110 moves each of the plurality of steel bars 100 to a position downstream of the current position in accordance with the control by the transport mechanism control device 111, and at the position, the steel bar It stops for a certain period of time while 100 is supported and fixed.
  • steps S501 and S502 are the same as steps S301 and S302 in FIG. That is, when steps S301 and S302 in FIG. 3 are executed, steps S501 and S502 are also executed.
  • step S503 the transport mechanism control device 111 sets the heating time to the induction heater control device 171. Instruct.
  • step S504 the induction heater 170 starts induction heating of the steel bar 100 in accordance with the control by the induction heater control device 171, and when the heating time instructed from the transport mechanism control device 111 has elapsed, step S505 is performed.
  • the induction heater 170 completes the induction heating of the steel bar 100 according to the control by the induction heater control device 171.
  • the transport mechanism control device 111 heats the induction heater control device 171 when the transport of the plurality of steel bars 100 determined to be heated is completed.
  • the time exceeding 0 is indicated as the time. In this way, the plurality of steel bars 100 determined to be heated can be heated.
  • the conveyance mechanism control device 111 instructs the induction heater control device 171 to 0 as the heating time. In this way, the plurality of steel bars 100 determined not to be heated can be prevented from being heated.
  • FIG. 6 is a diagram illustrating an example of a specific configuration of the laser marker 180.
  • the laser marker 180 includes laser light generators 182a to 182d and material end face detectors 183a to 183b.
  • the laser beam generators 182a to 182d irradiate the end surface of the steel bar 100 to which the base coating is sprayed and heated by the induction heater 170 while scanning the laser beam, and a part of the base coating is peeled off.
  • a two-dimensional code is created on the end surface of the steel bar 100 by causing at least one of carbonization, carbonization, and thermal discoloration.
  • FIG. 7 shows a system that performs marking using four laser light generators 182a to 182d for shortening the marking time, it may be performed by one laser light generator.
  • the laser light a class 4 CO2 laser having a wavelength of about 10 ⁇ m and an output of 30 W is used.
  • the laser beam is not limited to this as long as it can realize at least one of peeling, carbonization, and thermal discoloration with respect to the base paint.
  • the material end face detection devices 183a and 183b detect that the end face of the steel bar 100 is located at the laser light irradiation positions by the laser light generators 182a to 182b and 182c to 182d, respectively.
  • the material end face detection devices 183a and 183b can detect the position of the end face of the steel bar 100 by using, for example, optical means. Since the material end face detection devices 183a and 183b can be realized by a known technique as described in Patent Document 2, for example, detailed description thereof is omitted.
  • the position of the steel bar 100 is detected by the material end face detection devices 183a and 183b under the control of the laser marker control device 181. Further, a two-dimensional code is marked on the end surface of the steel bar 100 by irradiating laser light from the laser light generators 182a to 182d.
  • FIG. 7 is a flowchart for explaining an example of the operation of each apparatus when performing laser marking.
  • the process control apparatus 130 issues a material conveyance instruction to the conveyance mechanism control apparatus 111.
  • the material transport mechanism 110 moves each of the plurality of steel bars 100 to a position downstream of the current position in accordance with the control by the transport mechanism control device 111. It stops for a certain period of time while 100 is supported and fixed.
  • Steps S701 and S702 are the same as steps S301 and S302 in FIG. 3 and steps S501 and 502 in FIG. That is, when steps S301 and S302 in FIG.
  • steps S501 and 502 and steps S701 and S702 in FIG. 5 are also executed.
  • the fixed time the longest time is set among the spraying time of the base coating material on the end face of the steel bar 100, the heating time for the end face of the steel bar 100, and the creation time of the two-dimensional code by the laser beam.
  • step S703 the process control device 130 performs laser marker control on a laser beam irradiation instruction including the size and number of the steel bars 100, the material location, and marking information (printing information, etc.).
  • the laser marker control device 181 receives a laser light irradiation instruction
  • step S704 the laser marker 180 prepares for laser light irradiation in accordance with the instruction from the laser marker control device 181.
  • step S ⁇ b> 702 when the position of the material fixing base 120 in each of the plurality of steel bars 100 is changed and the transport of the plurality of steel bars 100 is completed, the transport mechanism control device 111 notifies the laser marker control device 181 of the completion of the steel bar transport. Instruct.
  • the material end surface detection device 183 controls the steel bar 100 under the management of the laser marker control device 181 in accordance with the instruction to complete the steel bar conveyance. The position of the end face is detected.
  • step S706 the laser marker 180 irradiates the position detected by the material end face detection device 183 with laser light in accordance with control by the laser marker control device 181 to remove a portion of the base paint, carbonize, and heat.
  • a two-dimensional code is marked by performing at least one of the color changes.
  • the laser marker control device 181 transmits the completion of the laser marker to the process control device 130.
  • step S707 when the process control apparatus 130 receives the completion of the laser marker, the process according to the flowchart of FIG. 7 ends.
  • the end face of the steel bar 100 is induction-heated.
  • the base paint After drying the base paint in this manner, by irradiating the end surface of the steel bar 100 with a laser beam and performing at least one of peeling, carbonization, and thermal discoloration on a part of the base paint, Create a two-dimensional code. Therefore, the lower-character paint can be instantly dried and baked. Therefore, high quality marking can be realized with the same paint (one kind of paint) for the steel bars 100 in various temperature zones from cold to hot while preventing deterioration of workability. .
  • a cold steel bar has a temperature range of normal temperature
  • a hot steel bar has a temperature range higher than normal temperature.
  • the base paint is induction-heated, it is possible to suppress the base paint from diffusing during drying.
  • the steel material for which the marking is to be created has a bar shape
  • the steel material for which marking is to be created is not limited to a steel bar shape.
  • the steel material for which the marking is to be created may be a steel bar other than a bar steel, a steel piece, a slab, or a steel plate.
  • the bar steel other than the bar steel it is preferable to mark the end face in the longitudinal direction.
  • coating of a base coating material, induction heating with an induction heater, and laser marking were performed at one stop timing was demonstrated to the steel material used as the preparation object of marking as an example.
  • the material transport mechanism for the paint spraying mechanism 160, the material transport mechanism for the induction heater 170, and the material transport mechanism for the laser marker 180 are independent material transport mechanisms. Moreover, it is not necessary to stop the material at the heating timing of the induction heater. In addition, when applying the base paint, induction heating by induction heater, and laser marking to the steel material for which marking is to be created at one stop timing, spraying of the base paint, induction heating, and laser marking are performed in one device. It does not matter if you do this.
  • the case where the base paint is applied to the end face of the steel bar 100 from the remote by the paint spray nozzles 162a to 162d has been described as an example.
  • the method of applying the base paint to the end face of the steel bar 100 is not limited to such a method.
  • the brush may be brought into contact with the end face of the steel bar 100 to apply the base paint, or the roller may be brought into contact with the end face of the steel bar 100 to apply the base paint.
  • the induction heater 170 heats only the vicinity of the surface of the steel bar 100 has been described as an example.
  • Use of the induction heater 170 is preferable because no wind is generated with respect to the steel bar 100 during heating, so that occurrence of unevenness in the base paint can be suppressed.
  • the heating of the steel bar 100 is not necessarily performed by the induction heater 170.
  • a heating furnace using radiant heat may be used.
  • the steel bar 100 can be sufficiently heated (for example, heated to the inside of the steel bar 100), the time from the end of heating the steel bar 100 to the start of spraying the base coating can be shortened.
  • the steel bar 100 may be processed in the order of the induction heater 170, the paint spraying mechanism 160, and the laser marker 180.
  • FIG. 8 is a diagram showing a modification of the configuration of the marking system.
  • the brush device 150 is disposed on the upstream side of the paint spraying mechanism 160, and the face rubbing device 140 is disposed on the upstream side of the brush device 150. That is, the surface grinding device 140 and the brush device 150 may be provided upstream of the paint spraying mechanism 160 to improve the properties of the end surface of the steel bar 100. Since these end face treatments may damage the marking (undercoat) by processing the end face, it is desirable to complete it before marking.
  • the face grinding device 140 removes burrs formed on the steel bar 100 conveyed to a predetermined location located in front of itself.
  • the surface rubbing device 140 has, for example, a file.
  • the burr formed on the end of the steel bar 100 is moved along the end of the steel bar 100 in a state in which the file is rotated and brought into contact with the end of the steel bar 100 according to the control by the chamfering control device 141. Remove. This operation is executed while the steel bar 100 is supported and fixed by the first material fixing base 120a and the second material fixing base 120b and is stopped for a certain period of time.
  • the brush device 150 removes the deposits in the region including the end surface of the bar steel 100.
  • the brush device 150 includes, for example, a brush.
  • the attached material in the region including the end surface of the steel bar 100 is removed by moving the brush in a state where it is in contact with the region including the end surface of the steel bar 100.
  • This operation is executed while the steel bar 100 is supported and fixed by the first material fixing base 120a and the second material fixing base 120b and is stopped for a certain period of time.
  • FIG. By rubbing, the end face properties are improved and the quality of the marking can be improved.
  • a plurality of steel bars placed in front of the facing device 140 are shown as a steel bar group 100 ⁇ / b> A, and a plurality of steel bars placed in front of the brush device 150 are shown as a steel bar group 100 ⁇ / b> B.
  • a plurality of steel bars placed in front of the paint spraying mechanism 160 are shown as a steel bar group 100C
  • a plurality of steel bars placed in front of the induction heater 170 are shown as a steel bar group 100D
  • a plurality of steel bars are shown as a steel bar group 100E.
  • the first material fixing gantry 120a and the second material fixing gantry 120b are configured to support and fix the bar steel 100 at a predetermined position located in front of the surface grinding device 140 and the brush device 150. preferable.
  • each steel bar 100 is manufactured under the same conditions except for the diameter of the end face.
  • the base paint is NRC1000 manufactured by Nireco Corporation. In any case, the spraying conditions of the base paint by the paint spraying device are the same.
  • One of the two small-diameter steel bars 100 coated with the base paint was heated to 100 ° C. or more by an induction heater 170, and then a two-dimensional code was created for the base paint part by the laser marker 180. .
  • the other one was not heated by the induction heater 170, and a two-dimensional code was created for the base coating with the laser marker 180.
  • one of the two large-diameter steel bars 100 coated with the base coating is heated to 100 ° C. or more by the induction heater 170, and then the two-dimensional code is applied to the base coating by the laser marker 180. It was created. Of the two large-diameter steel bars 100 to which the base coating was applied, the other one was not heated by the induction heater 170, and a two-dimensional code was created for the base coating using the laser marker 180.
  • the processing performed by the transport mechanism control device 111, the process control device 130, the paint spraying control device 161, the induction heater control device 171, and the laser marker control device 181 is executed by a computer. It can be realized by executing. Further, a computer-readable recording medium in which the program is recorded and a computer program product such as the program can also be applied as an embodiment of the present invention.
  • a computer-readable recording medium in which the program is recorded and a computer program product such as the program can also be applied as an embodiment of the present invention.
  • the recording medium for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.
  • the present invention can be used for, for example, management of steel materials being manufactured and steel materials after manufacture at a steel material manufacturing site.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Laser Beam Processing (AREA)
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JP7310686B2 (ja) * 2020-04-03 2023-07-19 新東工業株式会社 レーザ刻印装置、レーザ刻印システム及びレーザ刻印方法
KR102637997B1 (ko) * 2023-12-01 2024-02-19 이명재 빌렛 단면부 마킹시스템

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