A processing method

Abstract

The present application discloses a processing method. The processing line applicable to this processing method includes an uncoiler, a first transverse shear, a welder, and a coiler arranged in sequence according to the technological process. This processing method can accurately cut the defective part in the steel coil, and after welding the cut part, rewind it into a steel coil without the defective part, enabling the steel coil to undergo subsequent production processes, thereby ensuring the production quality of the steel coil.

Description

Technical Field

[0001] This application belongs to the technical field of cold rolling, and specifically relates to a processing method. Background Art

[0002] When cold rolling grain-oriented silicon steel strips, if there are defective parts on the steel coil, quality problems may occur in the production process, resulting in abnormal production. For example, when rolling the steel strip, the defective part of the steel strip may break, or when the steel coil is placed in an annular furnace for heat treatment, the defective part of the steel coil may cause uneven heating of the steel coil in the annular furnace and other such situations. Summary of the Invention

[0003] This application aims to at least solve to a certain extent the technical problem that the presence of defective parts on the steel coil leads to abnormal production and affects production quality. For this purpose, this application provides a processing method.

[0004] The technical solution of this application is as follows:

[0005] This application provides a processing method, which is applicable to a processing production line. The processing production line includes an uncoiler, a first transverse shear, a welder, and a coiler arranged in sequence according to the technological process. The processing method includes:

[0006] Confirm that there is a defective part on the first steel strip uncoiled by the uncoiler;

[0007] Control the head of the first steel strip to pass through the first transverse shear and the welder in sequence and connect to the coiler, and control the coiler to coil the first steel strip;

[0008] Control the first transverse shear to shear the first steel strip, so that the first steel strip forms a first sub-steel strip not including the defective part and a second sub-steel strip including the defective part, and the first sub-steel strip is in front of the second sub-steel strip;

[0009] Control the first sub-steel strip and the second sub-steel strip to continue running;

[0010] After the defective part of the second sub-steel strip runs in front of the first transverse shear, control the first transverse shear to shear the second sub-steel strip, so that the second sub-steel strip is cut into a third sub-steel strip with a defective part and a fourth sub-steel strip without a defective part, and the third sub-steel strip is in front of the fourth sub-steel strip;

[0011] Take out the third sub-steel strip;

[0012] Control the operation of the fourth split steel strip, and weld the head of the fourth split steel strip to the tail of the first split steel strip through the welder to form a second steel strip that does not include the defective part;

[0013] Control the coiler to coil the second steel strip.

[0014] Further, confirm that the deviation of the coil weight of the second steel strip coiled by the coiler compared to the coil weight of the first steel strip is not greater than the rated deviation.

[0015] Further, the processing production line further includes a weighing device, and the weighing device is correspondingly arranged with the coiler.

[0016] Further, the method further includes:

[0017] Control the tail of the second steel strip to run to the welder;

[0018] Control the weighing device to detect the deviation. If the deviation is less than or equal to the rated deviation, control the coiler to completely coil the second steel strip;

[0019] If the deviation is greater than the rated deviation, control the uncoiler to uncoil a third steel strip;

[0020] Control the operation of the third steel strip, and weld the head of the third steel strip to the tail of the second steel strip through the welder;

[0021] When the weighing device detects that the deviation is less than or equal to the rated deviation, control the first transverse cutting shear to cut the third steel strip. The part of the third steel strip in front of the first transverse cutting shear connected to the second steel strip as a whole is the fourth steel strip;

[0022] The coiler coils the fourth steel strip.

[0023] Further, the rated deviation is 12% - 14%.

[0024] Further, the processing production line further includes a slitting shear, and the slitting shear is arranged between the welder and the coiler.

[0025] Further, the processing production line further includes a first pinch roll, and the first pinch roll is arranged between the uncoiler and the first transverse cutting shear.

[0026] Further, the processing production line further includes a second pinch roll, and the second pinch roll is arranged between the slitting shear and the coiler.

[0027] Further, the processing production line further includes a second transverse cutting shear, and the second transverse cutting shear is arranged between the slitting shear and the second pinch roll.

[0028] Further, the processing production line further includes a guiding roller, which is arranged between the first transverse cutting shear and the welding machine, and the guiding roller can switch the guiding direction.

[0029] The embodiments of the present application at least have the following beneficial effects:

[0030] A processing method proposed by the present application is applicable to a processing production line, which can accurately cut the defective parts in the steel coil, and after welding the cut parts, rewind them into a steel coil without defective parts, enabling the steel coil to undergo subsequent production processes, thereby ensuring the production quality of the steel coil. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of the processing production line according to the embodiment of the present application;

[0033] Figure 2 It is a schematic flow diagram of the processing method according to the embodiment of the present application.

[0034] Reference Signs:

[0035] 100 - Uncoiler; 200 - First transverse cutting shear; 300 - Welding machine; 400 - Coiler; 500 - Circular shear; 600 - First pinch roll; 700 - Second pinch roll; 800 - Second transverse cutting shear; 900 - Steel strip. Detailed Embodiments

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0037] In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0038] The present application will be described below with reference to the accompanying drawings and specific embodiments:

[0039] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a processing method applicable to a processing line.

[0040] In combination with Figure 1 , the processing line includes an uncoiler 100, a first transverse shear 200, a welder 300, and a coiler 400 that are arranged in sequence according to the technological process.

[0041] In combination with Figure 2 , the processing method includes the following steps:

[0042] S1: Confirm that there is a defective part on the first steel strip uncoiled by the uncoiler 100, place the first steel strip with the defective part on the uncoiler 100, and the uncoiler 100 uncoils the first steel strip;

[0043] S2: Control the head of the first steel strip to pass through the first transverse shear 200 and the welder 300 in sequence and connect to the coiler 400. Control the coiler 400 to coil the first steel strip. After the head of the first steel strip passes through the first transverse shear 200 and the welder 300 in sequence, the head of the first steel strip is threaded through the jaws of the coiler 400, the jaws of the coiler 400 clamp the first leading end, and the coiler 400 coils the first steel strip;

[0044] S3: Control the first transverse shear 200 to shear the first steel strip so that the first steel strip forms a first sub-steel strip that does not include the defective part and a second sub-steel strip that includes the defective part, and the first sub-steel strip is in front of the second sub-steel strip.

[0045] S4: Control the first sub-steel strip and the second sub-steel strip to continue running. When the tail of the first sub-steel strip runs to the welder 300, the first sub-steel strip stops running;

[0046] S5: After the defective part of the second sub-steel strip runs in front of the first transverse shear 200, control the first transverse shear 200 to shear the second sub-steel strip so that the second sub-steel strip is cut into a third sub-steel strip with the defective part and a fourth sub-steel strip without the defective part, and the third sub-steel strip is in front of the fourth sub-steel strip.

[0047] S6: Take out the third sub-steel strip, and take out the third sub-steel strip (defective part) sheared from the second sub-steel strip from the processing line;

[0048] S7: Control the fourth sub-steel strip to run. When the head of the fourth sub-steel strip runs to the welder 300, weld the head of the fourth sub-steel strip to the tail of the first sub-steel strip through the welder 300 to form a second steel strip that does not include the defective part;

[0049] S8: Control the coiler 400 to coil the second steel strip.

[0050] Through the processing method proposed in the embodiments of the present application, the defective parts in the steel coil can be accurately cut off. After welding the cut parts, the steel coil is re-coiled into a steel coil without defective parts, enabling the steel coil to normally undergo subsequent production processes, thereby ensuring the production quality of the steel coil.

[0051] It should be noted that the front and rear in the embodiments of the present application are based on the running direction of the steel strip 900 on the processing production line. For example, the coiler 400 is in front of the welder 300, the welder 300 is in front of the first transverse cutting shear 200, and the first transverse cutting shear 200 is in front of the decoiler 100. Correspondingly, on the steel strip 900, the head of the steel strip 900 is in front of the tail of the steel strip 900.

[0052] In the subsequent production processes of the steel coil with defective parts removed, it includes placing the steel coil in an annular furnace for heat treatment. Removing the defective parts of the steel coil enables the steel coil to be evenly heated in the annular furnace, thereby improving the heat treatment effect of the annular furnace on the steel coil. In addition, as the equipment for the most core heat treatment link in the large-scale production of grain-oriented silicon steel coils, the steel coil capacity in the furnace chamber of the annular furnace can be up to one hundred coils. If the coil weights of the steel coils in the furnace are different, it will cause unstable combustion control of the burners in the annular furnace, especially the influence between the loops of the main burners in the annular furnace is the most obvious, resulting in the "uneven heating" phenomenon of adjacent steel coils, such as "thin bottom layer" and "point leakage" and other defects, which affect the product quality.

[0053] Therefore, it is necessary to ensure that the deviation of the coil weight of the steel coil after removing the defective parts compared with the coil weight of the original steel coil is not greater than the rated deviation, that is, the deviation of the coil weight of the second steel strip in the embodiments of the present application compared with the coil weight of the first steel strip (the coil weight of the first steel strip is the weight of the steel coil with the set standard) is not greater than the rated deviation.

[0054] In the embodiments of the present application, the processing production line further includes a weighing device. The weighing device is correspondingly arranged with the coiler 400. The weighing device includes an encoder and a controller. The encoder is correspondingly connected to the mandrel of the coiler, and the encoder is electrically connected to the controller. The encoder records the number of rotations of the mandrel of the coiler and feeds the data back to the controller. The controller calculates the weight of the steel coil according to the data fed back by the encoder and the data such as the thickness, width, density, and compensation coefficient of the steel coil preset in the controller, and presets the weight of the standard steel coil in the controller to calculate the deviation.

[0055] In the embodiments of the present application, the controller can be a logic controller, a microprogram controller, etc., and the embodiments of the present application do not limit this.

[0056] Based on the above requirements, the processing method proposed in the embodiments of the present application further includes the following steps based on steps S1 to S8:

[0057] S9: Control the tail of the second steel strip to run to the welder 300;

[0058] S10: Control the weighing device to detect the deviation. If the deviation is less than or equal to the rated deviation, control the coiler 400 to fully coil the second steel strip;

[0059] S11: If the deviation is greater than the rated deviation, place the third steel strip on the uncoiler 100 and control the uncoiler 100 to uncoil the third steel strip;

[0060] S12: Control the third steel strip to run. When the head of the third steel strip moves to the welder 300, weld the head of the third steel strip to the tail of the second steel strip through the welder 300;

[0061] S13: The welder 300 welds the fourth head and the fifth head together to weld the third steel strip to the second steel strip, and the uncoiler 100 and the coiler 400 resume operation;

[0062] S14: When the weighing device detects that the deviation is less than or equal to the rated deviation, control the first transverse shear 200 to shear the third steel strip. The part of the third steel strip in front of the first transverse shear 200 and the second steel strip connected as a whole is the fourth steel strip;

[0063] S15: The coiler 400 coils the fourth steel strip.

[0064] To further ensure that the processed fourth steel strip can meet the requirements for being placed in the ring furnace, when the deviation of the coil weight of the second steel strip compared to the first steel strip is greater than the rated deviation, the coil weight is increased by the third steel strip to reduce the deviation. To ensure the effect, the deviation should be made to approach zero as much as possible. To ensure the measurement accuracy of the weighing device, the coil weight of a steel coil with a length equal to the distance between the first transverse shear 200 and the coiler 400 needs to be set in the weighing device.

[0065] It should be noted that step S11 is carried out during the process of step S10, rather than after the coiler 400 fully coils the second steel strip into the second steel strip. Also, in step S10, fully coiling the second steel strip means coiling the second steel strip into a complete steel coil.

[0066] In the embodiments of the present application, a third steel strip with the same material and structure as the second steel strip needs to be used to ensure the unity of the steel coil model. Also, the third steel strip is a steel coil without defective parts.

[0067] In addition, in actual production, there will be some coil weights of steel coils with insufficient length and coil weights lower than the standard weight. For example, since part of the third steel strip is cut off and welded to the second steel strip, the coil weight of the third steel strip is lower than that of the standard weight steel coil. Through the processing production line and processing method of the embodiments of the present application, different steel coils with weights lower than the standard weight can be processed into steel coils that meet the coil weight requirements.

[0068] In the embodiments of the present application, the rated deviation is set to 12% - 14%. When the deviation of the coil weight of the second steel strip compared with that of the first steel strip is greater than the value in this interval, the second steel strip needs to be processed into a fourth steel strip. Of course, when the deviation of the coil weight of the second steel strip compared with that of the first steel strip is less than or equal to the value in this interval, the second steel strip can meet the requirements for being placed in the ring furnace.

[0069] Combined with Figure 1 , in the processing production line of the embodiments of the present application, the processing production line further includes a circular shear 500. The circular shear 500 is arranged between the welder 300 and the coiler 400 to trim the welded part on the steel strip 900, improve the overall flatness of the steel strip 900, and ensure the coiling effect of the coiler 400.

[0070] Combined with Figure 1 , the processing production line further includes a first pinch roll 600. The first pinch roll 600 is arranged between the uncoiler 100 and the first transverse shear 200 to pinch and convey the steel strip 900, assisting the movement of the steel strip 900 on the processing production line.

[0071] Combined with Figure 1 , the processing production line further includes a second pinch roll 700. The second pinch roll 700 is arranged between the circular shear and the coiler 400 to cooperate with the first pinch roll 600 to further pinch and convey the steel strip 900, also playing a role in assisting the movement of the steel strip 900 on the processing production line.

[0072] Combined with Figure 1 , the processing production line further includes a second transverse shear 800. The second transverse shear 800 is arranged between the circular shear 500 and the second pinch roll 700, thereby replacing the first transverse shear 200 for shearing the third steel strip in step S16 with the second transverse shear 800. Correspondingly, the coil weight of the steel coil with a length equal to the distance between the second transverse shear 800 and the coiler 400 is set in the weighing device. Since the longer the length of the steel strip 900, the greater the error generated, it plays a role in improving the measurement accuracy of the weighing device.

[0073] In the embodiments of the present application, the processing production line further includes a guide roller, which is arranged between the first transverse cutting shear 200 and the welding machine 300. The guide roller can switch its guiding direction. When the guide roller is in the first guiding position, it can guide the steel strip 900 to pass through the welding machine 300 when the steel strip 900 moves on the processing production line. When the guide roller is in the second guiding position, it can guide the defective part on the steel strip 900 to the outside of the processing production line, so as to take out the defective part from the processing production line.

[0074] In addition, since the lengths of the defective parts on some steel strips 900 are relatively long, a coiler for coiling the defective parts can be arranged in the direction of the second guiding position of the guide roller to store the cut defective parts.

[0075] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0076] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0077] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0078] In this application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0079] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of this application, "a plurality" means two or more, unless otherwise clearly specifically limited.

[0080] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0081] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0082] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of this application. The scope of this application is defined by the claims and their equivalents.

Claims

1. A processing method, characterized in that, the method is applicable to a processing production line, the processing production line includes an uncoiler, a first transverse cutting shear, a welder and a coiler arranged in sequence according to the technological process, and the processing method includes: confirming that there are defective parts in the first steel strip uncoiled by the uncoiler; controlling the head of the first steel strip to pass through the first transverse cutting shear and the welder in sequence and connect to the coiler, and controlling the coiler to coil the first steel strip; controlling the first transverse cutting shear to cut the first steel strip, so that the first steel strip forms a first sub-steel strip not including the defective part and a second sub-steel strip including the defective part, and the first sub-steel strip is in front of the second sub-steel strip; controlling the first sub-steel strip and the second sub-steel strip to continue running; after the defective part of the second sub-steel strip runs to the front of the first transverse cutting shear, controlling the first transverse cutting shear to cut the second sub-steel strip, so that the second sub-steel strip is cut into a third sub-steel strip with a defective part and a fourth sub-steel strip without a defective part, and the third sub-steel strip is in front of the fourth sub-steel strip; taking out the third sub-steel strip; controlling the fourth sub-steel strip to run, and welding the head of the fourth sub-steel strip to the tail of the first sub-steel strip through the welder to form a second steel strip not including the defective part; controlling the coiler to coil the second steel strip; confirming that the deviation of the coil weight of the second steel strip coiled by the coiler compared with the coil weight of the first steel strip is not greater than the rated deviation; the processing production line further includes a weighing device, and the weighing device is correspondingly arranged with the coiler; controlling the tail of the second steel strip to run to the welder; controlling the weighing device to detect the deviation, if the deviation is less than or equal to the rated deviation, controlling the coiler to completely coil the second steel strip; if the deviation is greater than the rated deviation, controlling the uncoiler to uncoil a third steel strip; controlling the third steel strip to run, and welding the head of the third steel strip to the tail of the second steel strip through the welder; when the weighing device detects that the deviation is less than or equal to the rated deviation, controlling the first transverse cutting shear to cut the third steel strip, and the whole part of the third steel strip in front of the first transverse cutting shear connected to the second steel strip is a fourth steel strip; the coiler coils the fourth steel strip.

2. The processing method according to claim 1, characterized in that, the rated deviation is 12% - 14%.

3. The processing method according to any one of claims 1 - 2, characterized in that, the processing production line further includes a circular shear, and the circular shear is arranged between the welder and the coiler.

4. The processing method according to claim 3, characterized in that, the processing production line further includes a first pinch roll, and the first pinch roll is arranged between the uncoiler and the first transverse cutting shear.

5. The processing method according to claim 4, characterized in that, the processing production line further includes a second pinch roll, and the second pinch roll is arranged between the circular shear and the coiler.

6. The processing method according to claim 5, characterized in that, The processing line further includes a second transverse cutting shear, and the second transverse cutting shear is arranged between the circular shear and the second pinch roll.

7. According to the processing method described in claim 6, characterized in that the processing line further includes a guide roll, the guide roll is arranged between the first transverse cutting shear and the welder, and the guide roll can switch the guiding direction.

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