KR101066581B1 - Auto stuffing system of stainless materials - Google Patents

Abstract

The automatic loading device of the stainless raw material of the present invention sequentially loads each raw material from the bay into the first basket and the second basket according to the target amount of the first and second baskets into which the raw materials are loaded, and the indicated target loading amount of the raw materials. Compares the crane unit with the target loading amount of the raw material and the actual loading amount of the raw material loaded into the first basket, and if a difference occurs between the target loading amount and the actual loading amount, It includes a control unit for correcting the amount of input.

The invention as described above has the effect of automatically collecting the actual loading amount, and thereby correcting the target loading amount in real time, by loading the correct raw material into the basket to improve the reliability of the data.

Basket, Stainless Steel, Crane Unit, Control Unit, Bay

Description

AUTO STUFFING SYSTEM OF STAINLESS MATERIALS}

The present invention relates to a loading device for stainless raw materials, and more particularly, to an automatic loading device for stainless raw materials for automatically loading a raw material loaded into a basket.

In general, stainless steel has a large amount of expensive ferroalloy, since various alloy elements such as chromium (Cr), nickel (Ni), molybdenum (Mo), and copper (Cu) are added in addition to iron (Fe) as a main component. The main raw materials used are stainless scrap, ferrochrome (Fe-Cr), ferronickel (Fe-Ni), general steel scrap and other ferroalloys. These main raw materials are charged into an electric furnace and dissolved.

Conventional stainless steel raw material loading device to contact the operator of the crane through the radio with the raw material loading information, such as loading instruction amount, bay number, loading basket number information for the steel grade to be produced by the operator in the loading cab, the crane operator instructs Based on the information, the loading crane is moved, and the raw material is picked up by the polyp or the magnet grab in the indicated bay, and the raw material is loaded into the loading basket.

When the loading crane finishes loading the material into the basket, when the basis weight detected in the load cell in the basket bogie is displayed on the digital display unit and the cab display unit, the raw material loading operator records this value and then records it. In order to weigh the amount of raw materials to be loaded, the currently loaded basis weight value is reset, and the next loading instruction amount is notified to the loading crane in the manner as shown above. At this time, the raw material to be inserted into the primary basket is different depending on the type of steel, but is classified into approximately 10 to 15, which requires the above repetitive work according to the type of loading raw material.

The conventional method as described above requires accurate calculation of the amount of raw materials and components, respectively, but the worker's load is excessive because the raw material blending calculation, loading instruction, and performance collection are performed by the worker's manual work, and the degree of data decreases and the working time. Excessive requirements, loading errors or deterioration of the quality is generated, causing a problem of reducing the reliability of the final product.

In order to solve the problems as described above, an object of the present invention is to provide an automatic loading device of stainless raw materials for increasing the reliability of data and erroneous operation of the device by hand.

In order to achieve the above object, the automatic loading device of the stainless raw material of the present invention, the first basket and the second basket, and each raw material from the bay in accordance with the target loading amount of the indicated raw material, the first basket And comparing the crane portion to be sequentially loaded in the second basket with the actual loading amount of the raw material loaded into the first basket and the target loading amount of the raw material, and if a difference occurs between the target loading amount and the actual loading amount, And a control unit for correcting a target loading amount of the raw material loaded into the two baskets, wherein the control unit subtracts the actual loading amount loaded into the first basket from the target loading amount to determine the loading order of the raw material amount and the raw material amount to be corrected. When the loading order of the raw material component amount and the raw material component amount is determined, the crane unit is instructed to insert the raw material into the second basket by the corrected target loading amount. When the last raw material is loaded into the basket, the corrected target loading amount is recalculated to finally determine the target loading amount, and the crane portion is instructed to insert the final target loading amount into the second basket. It is characterized by being communicated with each other by the communication unit.

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The present invention has the effect of automatically collecting the actual loading amount, and accordingly to correct the target loading amount in real time, by loading the correct raw material into the basket to improve the reliability of the data.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an automatic loading device of stainless steel raw material according to the present invention, Figure 2 is a flow chart for measuring the target loading amount of the automatic loading device of stainless steel raw material according to the present invention, Figures 3 and 4 Is a flow chart for determining the modified target loading amount of the automatic loading device of stainless raw material according to.

Referring to Figure 1, the automatic loading device of the stainless raw material according to the present invention is to load the raw material into the raw material storage unit 100 according to the raw material storage unit 100 and the indicated target loading amount of the raw material is stored. The crane unit 200 and a control unit 400 for correcting the difference between the target loading amount and the actual loading amount.

The raw material storage part 100 is a place where main raw materials such as stainless scrap, general steel scrap, ferro chromium, ferro nickel are stored to be charged into an electric furnace, and include a first basket 110 and a second basket 120. The first basket 110 and the second basket 120 is provided with a load cell (Lode Cell, not shown), the load cell is a raw material loaded in the first basket 110 and the second basket (120). The basis weight can be measured to collect the total amount of raw material loaded. Here, the raw material may be first loaded into the first basket 110 and then sequentially loaded into the second basket 120.

One side of the raw material storage unit 100 is provided with a crane unit 200 for loading the raw material into the raw material storage unit 100, the crane unit 200 is a bay containing each raw material according to the target loading amount (Bay) , And transfers a predetermined amount of the raw material from the raw material storage unit 110.

A control unit 400 may be provided to measure a target loading amount so that the crane unit 220 may load an appropriate amount of raw materials into the raw material storage unit 110. Such a control unit 400 may determine an initial target loading amount. It can measure and instruct a crane part. Here, the controller may be implemented as a control computer.

As described above, the controller 400 that determines the target loading amount performs a step (S100) of first calculating a target value of the loading target component, for example, about eight main components, as shown in FIG. 2. In this case, the loading target component calculation may be calculated by Equation 1.

(Real release rate / i component real rate) * i tapping component, [i = C, Si, Mn, ...., Cu]

Subsequently, a step (S110) of calculating the amount of stainless scrap is performed. Here, the amount of stainless scrap can measure the amount of the main raw material and the minor raw material that is a small amount of raw material, which can be calculated by Equation 2.

SCRAPinmax = SCRAPi (raw material less than SCRAPnmax: SCRAPmax)

SCRAPimax = amount of SCRAP-∑SCRAPinmax

Here, the SCRAPinmax value applies a constant value that is pre-tabled as a very small amount of raw material.

As described above, when the SCRAPinmax value and the SCRAPmax value are determined, step S120 of calculating the amount of chromium is performed. Here, the amount of chromium may be calculated by the equation (3).

CHCRinmax = CHCRi

CHCRimax = [load amount * load Cr%-(∑SCRAPi amount * Cr% + ∑CHCRinmax * Cr%)] / (Cr% of CHCRimax)

Then, the step of calculating the remaining amount of raw material according to the production steel grade is performed. For example, if the target amount of nickel is greater than or equal to the reference value (S130), the predetermined amount is greater than or equal to the predetermined amount (S140). On the other hand, if the target amount of nickel is not more than the reference value is performed to calculate the next raw material amount. Here, the nickel amount may be performed as shown in Equation 4.

FENIinmax = FENIi

FENIimax = [load amount * load Ni%-(∑SCRAPi amount * Ni% + ∑FENIinmax * Ni%)] / (Ni% of FENIimax)

Subsequently, it is determined whether the target amount of molybdenum is greater than or equal to the reference value (S150), and if the target amount of molybdenum is greater than or equal to the reference value, a calculation (S160) of controlling the molybdenum amount is performed as in Equation 5.

FEMO = [load amount * load Mo%-(∑SCRAPi amount * Mo%)] / (Mo% of FEMO)

Subsequently, it is determined whether the target amount of copper is greater than or equal to the reference value (S170). If the target amount of copper is greater than or equal to the reference value, a calculation (S180) is performed to control the amount of copper as shown in Equation 6.

Cu = [loading amount * loading Cu%-(∑SCRAPi amount * Cu%)] / (Cu% of Cu)

As described above, after finishing the step of calculating the remaining amount of raw material is performed to calculate the amount of scrap of the general steel (S190). Here, the general steel scrap amount is calculated as shown in equation (7).

Generalimax = generali

Generalimax = Ch Target Load-∑SCRAP-∑CHCR-∑FENI-∑FEMO-∑CU-∑General inmax

After the calculation of the scrap amount of the general steel as described above, as shown in Equation 8, the step of calculating the amount of coke (S200) is performed.

[(C loading-∑ raw material i C quantity) / COKE%] * 100

As described above, the target loading amount is determined after the step (S200) of calculating the cock amount.

When the target loading amount is determined from the control unit 400, the crane unit 200 is instructed through the wireless communication unit 300, whereby the crane unit 200 receives a target loading amount from a bay (not shown) in which each raw material is stored. Accordingly, the raw material is picked up and loaded into the raw material storage unit 100, for example, the first basket 110.

When the loading of the raw material into the first basket 110 is finished, the actual amount of raw material loaded into the first basket 110 and measured is sent to the control unit 400 through the wireless communication unit 300, and the control unit 400 targets the raw material. The loading amount and the actual raw material amount will be compared. From this, if a difference occurs between the target loading amount and the actual loading amount, the target loading amount is corrected. From this, the raw material loaded into the second basket 120 is loaded by the corrected target loading amount.

That is, as shown in FIG. 3, when it is determined that the target value of the 2nd raw material i, for example, the raw material is not 0 (S210), a step of determining whether the first actual raw material amount is greater than 0 from the target value of the raw material i is performed (S230). In step S240, the first actual amount of raw material is calculated from the target value of i than zero. On the other hand, if 2nd raw material i, for example, the target value of raw material 1 is 0, 2nd raw material mi is determined to be 0 (S220). Here, the raw material i is the target value of the raw materials 1, .n, and the raw material mi is the modified target value of the raw materials 1, ... n.

As described above, when the step of calculating the raw material (S240) is completed, the step (S250) of determining the component amount of the raw material is performed to the target loading amount to be corrected. Here, the component amount of the raw material can be calculated by the equation (9).

2nd raw material inmax = raw material i-1st act raw material i

2nd raw material imax = ∑ raw material i-(∑1st act raw material i + ∑2nd raw material inmax)

As described above, when the amount of ingredients of the raw material is determined (S250), the step of determining the raw material loading order (S260) is performed. Here, the raw material loading order may be calculated by the equation (10).

2nd raw material i Seq amount max = 2nd raw material i Seq amount

2nd raw material i Seq amount max = 2nd raw material i-(∑2nd raw material i Seq amount nmax)

As described above, when the component amount of the raw material and the loading order of the raw material are determined (S260), the target loading amount to be corrected is determined, which causes the crane to be loaded into the second basket 120 by the corrected target loading amount. Instructions are made to the unit 200.

Thereafter, the corrected target loading amount is recalculated when the last raw material is loaded into the second basket 120 to finally determine the target loading amount, thereby instructing the crane unit 200 the final target loading amount. .

As shown in FIG. 4, it is determined whether there are two or more stainless scraps to be loaded into the second basket 120 (S300), and infinitely repeated until one stainless scrap remains. Subsequently, when it is determined that one stainless scrap is left (S310), a step (S320) of correcting the target loading amount of the completed stainless scrap is performed. Here, the step (S320) of finally correcting the target loading amount of the stainless scrap may be calculated by Equation 11.

Loading complete SCRAPi = actSCRAPi

planSCRAPi = ∑2nd order aimSCRAPi-∑2nd orderactSCRAPi, but if i <0, plan SCRAPi = 0

When the final target loading amount of the stainless scrap is determined as described above, it is determined whether the number of main raw materials, such as general steel, ferronickel, and ferromolybdenum, to be added remain as described above (S330), and when it is determined that one is left (S350). By calculating the final target loading amount of the main raw material by the equation (12) (S360).

Loading completed METi = actMETi

planMETi = ∑2nd aim raw material i * MET%-∑2nd actual raw material i * MET%-planSCRAPi * MET%) / MET% of planMETi, but i <0, plan METi = 0

Here, MET is a value representatively representing the main raw materials such as ferro chromium, ferro nickel, ferro molybdenum, so that each of the main raw materials can be calculated in turn by the above equation.

As described above, when the target loading amount of the main raw material is finally corrected (S360), a step (S370) of finally calculating the general scrap amount by Equation 13 is performed.

Planximax = ∑2nd aim raw material i-∑2nd raw material i-planly raw material i

As described above, when the target loading amount is finally corrected in the last raw material during the loading of the second basket 120 after the completion of the first basket 110, the crane unit 200 instructs the finally corrected target loading amount. Due to the crane unit 200 is finished with the last raw material in the second basket 120 in accordance with the final corrected target loading amount.

As described above, the present invention automatically collects the actual loading amount and accordingly corrects the target loading amount in real time, so that the correct raw material can be loaded into the basket, thereby improving the reliability of the data. It works.

Although described above with reference to the drawings and embodiments, those skilled in the art that the present invention can be variously modified and changed within the scope without departing from the spirit of the invention described in the claims below I can understand.

1 is a block diagram showing an automatic loading device of stainless raw materials according to the present invention.

Figure 2 is a flow chart for measuring the target loading amount of the automatic loading device of stainless raw material according to the present invention.

3 and 4 is a flow chart for determining the modified target loading amount of the automatic loading device of stainless steel raw material according to the present invention.

               <Description of the code | symbol about the principal part of drawings>

100: raw material storage unit 110: the first basket

120: second basket 200: crane portion

300: wireless communication unit 400: control unit

Claims (4)

The first basket 110 and the second basket 120 into which the raw materials are loaded, and the respective raw materials from the bay are sequentially placed in the first basket 110 and the second basket 120 according to the target loading amount of the indicated raw materials. The crane unit 200 to be loaded and the target loading amount of the raw material and the actual loading amount of the raw material loaded into the first basket 110 are compared, and if a difference is generated between the target loading amount and the actual loading amount, the second loading amount is changed. It includes a control unit 400 for correcting the target loading amount of the raw material to be inserted into the basket 120, The control unit 400 determines the loading order of the raw material amount and the raw material amount to be corrected by subtracting the actual loading amount loaded into the first basket from the target loading amount, and when the loading order of the raw material amount and the raw material amount is determined, correcting The crane unit 200 instructs the raw material to be loaded into the second basket 120 according to the target loading amount. Then, when the last raw material is loaded into the second basket 120, the corrected target loading amount is recalculated to finally obtain the final raw material. Determine a target loading amount, and instructs the crane unit 200 to load the final target loading amount into the second basket 120, The crane unit 200 and the control unit 400 is automatic loading device of the raw material, characterized in that the mutual communication by the wireless communication unit (300). delete delete delete

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