TWI337050B - - Google Patents

Description

[Technical Field] The present invention relates to an induction heating device for heating the left and right end sides of a material to be conveyed in a hot rolling facility. [Prior Art] In general, in a hot rolling apparatus, a heated material is heated to a predetermined φ degree, and then continuously conveyed through a plurality of roll mills to form a sheet. When the material to be heated is transported, the ends of the heated material are slowly released, and the temperature of the portion is gradually lowered after being compared with the central portion. When rolling is performed under the condition that the temperature on the end side is lowered to cause the entire temperature to be uneven, the quality of the rolled steel sheet cannot be kept constant, so that the hardness of the side portion becomes high and the material to be heated is broken, resulting in a roll mill. Rolling flat wear and other issues. For this reason, in general, an induction device for locally rolling the both sides of the material to be heated by an inductor to reach a substantially constant temperature after the roller is rolled on the upstream side of the roll of the hot rolling apparatus is performed. For example, in the induction heating device 100 shown in Fig. 8, the iron core 2 R is formed in a C shape, and the upper core portion 4Ra is vertically opposed to the upper portion of the C-shaped iron core 2 R The heating coil is wound around the lower core leg 4Rb to form an inductor 6R of the upper sensing portion 5Ra and the lower sensing 5Rb. Further, the sensor 6L having the same shape as the inductor 6R is disposed oppositely. As shown in Fig. 9, the inductor and the inductor 6L are disposed between the front and rear transport rollers 9, 9. Hot temperature is slow and slow end wheel grinding end heat

6R -4 - (2) 1337050 When the heating device 1 is locally heated to the side of the heated material end, the end portion of the material 7 to be heated is passed 6R and the opening 3 of the inductor 6L. The high-frequency electric heating coil is supplied from the power source to generate magnetic fluxes in the vertical direction in the upper sensing portions 5Ra and 5La and the lower sensing 5Lb. By causing the magnetic flux to be vertically staggered to cause an eddy current on the material to be heated 7, the current generates Joule heat energy and locally heats the material 7 to be heated. However, the material to be heated 7 is transferred by the transfer roller. The left and right offset occurs, as shown in Fig. 8, which causes a change in the size L of the overlap with the inductors 6R, 6L. The overlap size L can be adjusted depending on the thickness or thickness of the material 7 to be heated. The temperature is set, but when the overlap size L between the material 7 to be conveyed and the inductors 6R and 6L is changed, the heated material 7 cannot be uniformly heated. Φ For this reason, for example, Patent Document 1 (Japanese Utility New 2 2 8 8) In Japanese Patent No. 606, it is proposed to move the inductor in response to the left and right offset of the material to be conveyed to achieve the overlap size, and to control the heating of the material to be heated 7 under optimal conditions. Device. SUMMARY OF THE INVENTION The control device for inductively heating the edge heater of the Japanese Utility Model Registration No. 2588606 can flow the electric current to the portion 5Rb and the hot material 7 through the two sides of the vortex. The overheated material conveyed by the part; when the slab is wide and heated, the optimum condition described in the induction of the heating is maintained.

L (3) !337〇5〇 induction heating the material to be heated, but the total weight of the induction heating edge heater is about 20 tons, and the mobile device that causes the mobile induction heating edge heater is large, and the response speed is also Not enough. The present invention has been made in view of the above problems, and provides an induction heating device which is formed into a compact device and which is capable of inductively heating under optimum conditions in response to the right and left displacement of the material to be conveyed.

[Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. <<Structure>> Fig. 1 is a configuration diagram showing an embodiment of the induction heating device of the present invention. The induction heating device according to the present embodiment includes an inductor 6R that inductively heats the left and right ends of the material 7 to be heated from above and below, and supplies electric power to the inductor 6R. The high-frequency power source 10; the heating condition setter 1 1 that sets the power amount target by the heating condition of the inductor 6R: the detector current transformer 1 3 R that detects the current supplied to the inductor 6R; the detection supply to the inductor 6R The voltage calculator transformer 14R calculates a power amount from the detected current 値 and voltage 来 as a power detector 1 5 R for measuring the amount of power; and converts the power amount target 输出 output by the heating condition setter 1 to At the same time, the optimum sensor interval is 値, and the amount of power output by the power detector 15R is converted to -6-(4) 1337050. The optimal sense of deviation is 19R, which is about the holding, and then the lower iron. The C-portion 4Ra sensing unit gR 6R is used to transport the current to the upper and lower of the magnetic flux material 7 to determine the sensor spacing 感应 converter 1 6R: calculate the interval between the detector and the measuring sensor The spacer as a spacer to offset the deviation calculator 1 7R; deviation of the spacer into the motor compartment manner without 1 9 R interval of the motor controller 1 8 R; and that the horse by the spacing of the sensors 6R action jack 20 R. In the first embodiment, the sensor 6R is shown in Fig. 1, but the induction heating device 1 of the present embodiment has the left and right end sides in the short-side direction (wide direction) of the heating material 7 as shown in Fig. 2 . Set one sensor 6 L. In other words, the inductor 6R is formed in a C shape by the core 2 R composed of the upper core portion 2Ra and the core portion 2Rb, and is vertically opposed to the upper core portion and the lower core portion at the opening portion 3 of the dome-shaped core 2R. 4Rb' includes a winding heating coil upper portion 5Ra and a lower sensing portion 5Rb. Further, as shown in FIG. 3, the inductor 6L having the same structure as that of the sensory month is placed in the opening portion 3 held by the upper iron 4Ra and the lower core leg portion 4Rb, and the roller 2 is transported. The end side of the heating material 7 passes. As a result, the inductor 6 R flows from the power source 1 至 to the upper sensing portion 5Ra and the lower sensing portion 5Rb as shown in Fig. 4, and the magnetic flux Φ is generated in the direction. Furthermore, the eddy current is generated by entanglement of Φ on the material to be heated 7, and Joule heat energy is generated, and the heating is heated.

In addition, as shown in Fig. 2, the inductor 6R has an upper portion that can be adjusted by rotating the upper core portion 2Ra of the c-shaped core 2R with respect to the upper core portion 2Rb of the lower core portion 2Rb around the hinge portion 2RC (5) (5) 1337050. The distance '· between the sensing portion 5Ra and the lower sensing portion 5Rb is also the structure of the inductor interval η. The same configuration is also applied to the inductor 6L. Therefore, even if the left and right sides of the material to be heated 7 are displaced, the Joule heat energy generated in the material 7 to be heated can be made uniform by adjusting the sensor spacing 因 in response to the offset occurring. <<Operation>> Next, the operation of the induction heating device 1 according to the present embodiment will be described with reference to Fig. 1 . Further, since the inductor 6R and the inductor 6L have the same configuration, only the inductor 6R will be described below, and the description of the inductor 6 L will be omitted. First, the heating condition setter 1 receives the setting of the amount of electric power that can be optimally heated from at least the material of the material to be heated 7, the width of the board, and the thickness of the board by external input or the like, and sets the amount of electric power received. Set to the power amount target 値, output to the sensor interval converter 16R. On the other hand, the material 7 to be heated conveyed by the transport roller 9 is such that both ends thereof travel between the upper sensing portion 5 Ra and the lower sensing portion 5Rb of the induction heating device, and the magnetic flux generated thereby is generated. Φ is heated by induction heating, and the high-frequency power source from the high-frequency power source 1A is energized by the energizing circuit 12R on the upper sensing portion 5Ra and the lower sensing portion 5Rb of the inductor 6R, and is used by the meter provided in the energizing circuit 12 The converter 13R detects the supply current and detects the supply voltage of -8 - (6) (6) 1337050 by the transformer 1 4R. Furthermore, the current 値 detected by the estimator 1 3 R and the voltage 检测 detected by the calibrator transformer 1 4R are transmitted to the power detector 1 5 R, and the power detector 15 R is received from the power detector 15 R The current 値 and the voltage 値 calculate the amount of electric power as the measured electric power amount. Furthermore, the sensor interval converter 16 6 converts the power amount target set by the heating condition setter 为 into an optimal sensor interval, and the sensor interval converter 16 6 receives power detection. The measured amount of electric power detected by the unit 1 6R converts the received measured electric quantity into a measuring sensor interval 値. Figure 5 is a diagram showing the relationship between the sensor spacing and the amount of power in the inductor 6R. The 501 is the amount of power W that is displayed for the sensor interval. As shown in Fig. 5, the power amount W shows that the impedance of the inductor 6R becomes smaller as the interval between the inductors becomes larger, and the amount of power W also changes/J, 0 where the 'inductor interval 値 converter 1 6R uses the relationship of Fig. 5 to calculate the optimum sensor interval 値 and the measurement sensor interval 藉 by converting the amount of electric power W into the sensor interval 値η. Next, the interval estimation calculator 1 7R calculates the deviation between the optimum sensor interval 转换 and the measurement sensor interval 转换 converted by the sensor interval 1 converter 16 6 as the interval deviation, and outputs it to the interval motor controller 1 . 8R. -9- (7) 1337050 Furthermore, the interval motor controller 1 8R is such that the optimum sensor interval 测定 and the measurement sensor interval 値 become no, that is, the interval deviation received from the interval deviation calculator I7R In the zero mode, the control amount of the control interval motor 19R is calculated, and the calculated control amount is transmitted to the interval motor 19R. The interval motor 1 9R operates in accordance with the received control amount to operate the jack 20 R. φ By the operation of the jack 2〇R, the upper core portion 2Ra of the inductor 6R is rotated about the hinge portion 2Rc with respect to the lower core portion 2Rb. Thereby, the distance between the upper sensing portion 5 Ra and the lower sensing portion 5 Rb ', that is, the sensor spacing Η can be adjusted to form a compact device, and the left and right offset of the material 7 to be conveyed can be adjusted. Induction heating under optimal conditions for response. &lt;Modification 1&gt; The induction heating device 1 of the present embodiment adjusts the distance between the upper sensing portion 5Ra and the lower sensing portion 5Rb in accordance with the amount of electric power of the inductor 6R, that is, the sensor interval Η. In the induction heating device 1 a of the first modification, the sensor interval 调整 is adjusted in accordance with the amount of electric power of the inductor 6R, and the trolley of the fixed inductor 6R is laterally moved toward the short side direction of the material 7 to be heated. The distance between the heated material 7 and the inductor 6R can be adjusted. In this way, by moving the inductor 6R to the position set to the optimum condition and adjusting the sensor spacing Η, the left and right offset of the heated material 7 by the -10-(8) 1337050 can be transferred. Simultaneous and inductive heating of the heating temperature is performed. <<Structure>> Fig. 6 is a view showing the configuration of the induction heating device 1a of the first modification. In addition to the induction heating device 1 of the present embodiment, the induction heating device 1a is provided with the heating material 7 in the short-side direction of the material 7 to be heated. The distance of the sensor 6R is 'offset', and the sensor horse on the trolley 28R of the fixed sensor 6R is moved up to 25R; the position of the sensor 6R of the trolley '28R moved by the sensor motor 25R is detected as a position After measuring the position detection of the sensor, the sensor position detector 2 6R; the sensor position converter 22R which is converted to the optimum sensor position setting by the power amount setting unit 1 of the heating condition setter 1; The position sensor converter 22R converts the optimal sensor position setting 値 with the sensor position detector 値 detected by the sensor position detector 26R as the sensor position deviation sensor position deviation calculator 23R; The sensor motor controller 24R of the inductor motor 25R is controlled based on the sensor position deviation calculated by the inductor position deviation calculator 2 3 R.

Further, in Fig. 6, although one sensor 6R is shown, the induction heating device 1a of the first modification is placed on the left and right ends of the short-side direction (wide direction) of the material to be heated 7, and is then disposed. One sensor 6L -11 - (9) (9) 1337050 "Operation" Next, the action of the induction heating device 1a of the modification 1 will be described with reference to Fig. 6. First, the heating condition setter 11 receives the setting of the optimum heating power from at least the material of the material to be heated 7, the width of the board, and the thickness of the board by external input or the like, and sets the received power setting 为 to The power amount target 値 is output to the sensor position converter 22R. On the other hand, the material to be heated 7 conveyed by the transport roller 9 is moved between the upper end side sensing portion 5Ra and the lower sensing portion 5 Rb of the induction heating device 1a, and is produced by the above. The magnetic beam is heated by induction. The sensor position detector 26R detects the position of the trolley 2 8 R of the fixed sensor 6R, and calculates the position data of the sensor 6R from the position of the measured trolley 2 8 R, and outputs it as a sensor position detection signal to the induction. The position deviation calculator 23R. Furthermore, the 'inductor position converter 2 2R converts the power target 输出 outputted by the heating condition setter 11 into an optimum sensor position signal. The seventh figure shows the distance between the display inductor 6R and the material to be heated 7 The map of the position of the sensor and the amount of power. The 701 is a power amount W indicating the position of the sensor.

As shown in Fig. 7, the electric power amount W shows that the inductor 6R -12- (10) (10) 1337050 is heated as the position of the inductor becomes larger, that is, in the short side direction of the material 7 to be heated. The more the distance of the material 7 is separated, the impedance of the inductor 6R is made smaller, and the amount of electric power W is also reduced. Therefore, the sensor position converter 22R calculates the optimum sensor position by converting the amount of electric power W into the sensor position 利用 by using the relationship of Fig. 7, and outputs it to the sensor position as an optimum sensor position signal. Deviation calculator 23R. Next, the sensor position deviation calculator 2 3 R receives the sensor position detection signal detected by the sensor position detector 26R. Further, from the received sensor position detection signal and the optimal sensor position signal received by the sensor position converter 22R, the deviation between the measured sensor position and the optimal sensor position is calculated as the sensor position deviation. The calculated sensor position deviation is output to the sensor motor controller 24R as a sensor position deviation signal. Next, the sensor motor controller 24R calculates the optimum sensor position and the measurement sensor position, that is, the sensor position deviation received from the sensor position deviation calculator 23R is zero. The control amount of the sensor motor 2 5 R is controlled, and the calculated control amount is transmitted to the inductor motor 25R. The sensor motor 25R operates in accordance with the received control amount, and laterally moves the wheel 29R attached to the bottom of the carriage 28R of the fixed inductor 6R toward the short side direction of the material 7 to be heated. Thereby, the inductor 6R fixed to the carriage 28 R can be moved so that the sensor position 测定 measured by the sensor position detector 26R becomes the set optimum position. Further, by adjusting the inductance -13-(11) 1337050 interval, it is possible to perform fine adjustment of the heating temperature and induction heating with respect to the left-right displacement of the material 7 to be conveyed. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing an embodiment of an induction heating device according to the present invention. The second diagram is a configuration diagram of the φ heating device of the present embodiment in which two sensors are provided. Fig. 3 is a perspective view of the induction heating device of the present embodiment. Fig. 4 is an explanatory view for explaining induction heating of the induction heating device of the embodiment. Fig. 5 is a view showing the relationship between the sensor interval and the amount of electric power. Fig. 6 is a view showing the configuration of the induction heating device according to the modification. Fig. 7 is a diagram showing the relationship between the position of the sensor representing the distance between the inductor and the material to be heated and the amount of electric power. Figure 8 is a cross-sectional view showing a conventional induction heating device. Figure 9 is a plan view showing a conventional induction heating device. [Description of main component symbols] 1 'la, 100: induction heating device 2R, 2L: C-shaped core 2Ra, 2La: upper core part -14- (12) 1337050

2Rb, 2Lb: lower 2Rc, 2Lc: hinge 3: opening 4 R a, 4 L a : upper 4Rb, 4Lb : lower 5Ra, 5La : upper 5Rb , 5Lb : lower 6 R, 6 L : induction 7 : heated material Come 9: Transport roller 1 0 : Commercial frequency power supply 1 1 : Heating condition 1 2R : Power supply 1 3 R : 1 4 R for the meter: 1 5R for the meter 1 : Power check 1 6 R : Sensor 1 7 R : Interval Partial 1 8 R : Spacer 1 9 R : Spacer 20R : Jack 2 1 R : Space 2 2 R : Sensor 23R : Sensor part core part chain core foot part core foot part sensing part Inductor: 器器器器器 値 Converter Computation Controller Detector Set Converter Deviation Computator -15- (13) (13) 1337050 24R: Sensor Motor Controller 25R: Sensor Motor 26R: Sensor position detector 28R: Pallet 29R: Wheel 50 1 : Power amount W 701 for sensor interval: Power amount W for sensor position Η : Sensor interval L : Overlap size Φ : Magnetic beam

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Claims (1)

1337050 month 2 丨 (10) (9) jade replacement page 1 - secret - 卜 - 10, the scope of application for patents 095 1 4646 Patent application No. 1 Chinese patent application scope amendments. Further, the present invention includes: an inductor including: a core portion that is wound around the lower portion of the heating coil at the end portion; and an opposite portion of the lower core portion that has a predetermined interval and is disposed oppositely and is rolled at the end portion Winding around the upper core portion of the heating coil; and for the lower core portion, the hinge portion of the upper core portion is rotatably supported and formed in a C shape, and the material to be heated to be transported between the aforementioned inductor spaces Heating; the electric quantity detecting means is provided on the energizing circuit of the heating coil, and detects the amount of electric power supplied to the heating coil; and the heating condition setting means is at least a material of the material to be heated heated by the inductor , the width of the plate, and the thickness of the plate, set the optimal heating conditions of the aforementioned heating coil, and set the electricity according to the optimal heating conditions to be set. The measurement target 値; the sensor interval conversion means converts the set power amount target 为 into the optimal sensor interval ,, and converts the amount of power detected by the aforementioned power amount detecting means into the measuring sensor Interval 値; interval deviation calculating means for calculating a deviation between the optimal sensor interval 转换 and the measurement sensor interval 来 as the interval deviation; and the interval motor control means for making the calculated interval deviation zero In the manner, the motor that rotates the upper core portion is controlled. L33^〇5〇~~------ • Listen to the year of the month: 丨ή (more) Wang replacement page --------------------- --------—————————————— 2 · For the sensory heating device of the first application of the patent specification, further comprising: an inductor motor, which is capable of adjusting the foregoing The inductor is moved in such a manner that the distance between the heated material and the aforementioned heated material in the short direction of the inductor is used; the sensor position detecting means detects the position of the inductor moved by the inductor motor. As the measuring sensor position detecting sensor position changing means, the power amount target set by the heating condition setting means is converted into an optimum sensor position setting 値» sensor position deviation calculating means, which is used for calculation. The optimum sensor position setting converted by the sensor position conversion means and the deviation of the measurement sensor position detection detected by the sensor position detecting means are used as the sensor position deviation: the sensor motor control means In order to utilize the aforementioned sensor The sensor motor is controlled in such a manner that the sensor position deviation calculated by the position deviation calculating means is zero.