CN113118869A - Method and system for determining use mileage of cutting edge of disc shear and industrial control equipment - Google Patents
Method and system for determining use mileage of cutting edge of disc shear and industrial control equipment Download PDFInfo
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Abstract
The invention discloses a method for determining the use mileage of a shearing edge of a circle shear, which comprises the following steps: acquiring the information of the strip steel to be produced, the mapping relation between the strength of the strip steel and the wear coefficient of a shear blade and the maximum gap thinning amount of the shear blade of the disc shear; the strip steel information comprises length information and strength information of each roll of strip steel in N rolls of strip steel, wherein N is more than or equal to 2 and is an integer; the shear blade wear coefficient is the gap thinning amount of the disc shear blade after trimming the unit length of the strip steel; determining a shear blade wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relation between the strip steel intensity and the shear blade wear coefficient; and determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount. The method can improve the surface quality of the strip steel and save the consumption of the cutting edge of the disc shear.
Description
Technical Field
The application relates to the technical field of plate strip cold rolling, in particular to a method and a system for determining the use mileage of a shearing edge of a circle shear and industrial control equipment.
Background
In the cold rolling process of a strip steel, a rotary shear is one of the most important devices for sizing the width of the strip steel, and is generally installed in a cold continuous rolling mill to longitudinally trim a cold-rolled raw material sheet after pickling, or in a continuous annealing and continuous hot-dipping mill to longitudinally trim the strip steel after annealing or hot-dipping. The cutting edges of the disc shears gradually wear along with the process, so that the cutting edges of the disc shears can be replaced after the disc shears normally cut edges with certain weight (for example, 3000 tons of strip steel) so as not to influence the quality of the cut edges. At present, the time for replacing the cutting edge of the disc shear is a fixed value determined according to historical production experience, but the problems are as follows: the control is carried out according to a fixed value, the mild steel can be continuously used after reaching a fixed trimming amount, and unnecessary waste is generated if the mild steel is replaced; if for high-strength steel, the abrasion speed of the shear blade is very high, the shear blade is excessively abraded before reaching the fixed trimming amount, so that the problems of flash and even cutter breakage are caused, and the surface quality of the high-strength steel is seriously influenced. In actual production, according to the arrangement of a production plan, the unit can intensively produce mild steel in a period of time, intensively produce high-strength steel in a period of time, and can alternately produce in a short time. Therefore, how to more accurately determine the replacement time of the cutting edge of the circle shear becomes a problem to be solved.
Disclosure of Invention
The invention provides a method and a system for determining the use mileage of a shearing edge of a circle shear and industrial control equipment, which are used for solving or partially solving the technical problems of how to more accurately determine the replacement time of the shearing edge of the circle shear and avoiding the waste caused by unnecessary replacement of the shearing edge or the problems of edge flying and tool breakage caused by excessive abrasion of the shearing edge.
In order to solve the above technical problem, in an embodiment of the present invention, a method for determining a use mileage of a cutting edge of a circle shear is provided, including:
acquiring the information of the strip steel to be produced, the mapping relation between the strength of the strip steel and the wear coefficient of a shear blade and the maximum gap thinning amount of the shear blade of the disc shear; the strip steel information comprises length information and strength information of each roll of strip steel in N rolls of strip steel, wherein N is more than or equal to 2 and is an integer; the shear blade wear coefficient is the gap thinning amount of the disc shear blade after trimming the unit length of the strip steel;
determining a shear blade wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relation between the strip steel intensity and the shear blade wear coefficient;
and determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount.
Optionally, the mapping relationship between the strip steel strength and the shear edge wear coefficient is determined according to the following method:
acquiring all steel grades produced by cold rolling and the strip steel strength corresponding to each steel grade;
grouping all the steel types according to the strength of the strip steel and a preset grouping rule to obtain M groups of strip steel; m is not less than 2 and is an integer;
using a circle shear to cut edges of the ith group of strip steel, and obtaining the gap thinning amount of the cutting edge of the circle shear after the cutting edge of the ith group of strip steel is cut to a preset length, wherein i takes values of 1,2, … and M in sequence;
and determining the shear blade wear coefficient between the disc shear blade and the ith group of strip steel according to the preset length and the gap thinning amount.
Further, the shear blade wear coefficient between the circle shear blade and the ith group of strip steel is determined according to the preset length and the gap thinning amount, and specifically as follows:
according to formula ki＝diL, determiningA shear blade wear coefficient between the circle shear blade and the ith set of strip steel;
wherein k isiThe shear blade wear coefficient between the circle shear blade and the ith group of strip steel is obtained;
dithe gap thinning amount of the shearing edge of the circle shear after the edge of the ith group of strip steel is measured in millimeters;
and L is the preset length and has the unit of kilometers.
Optionally, the mapping relationship between the strip steel strength and the shear edge wear coefficient is obtained according to the following method:
acquiring the grades of all the strip steels to be produced and the strip steel strength corresponding to each grade of the strip steel;
trimming the strip steel of each grade by using a circle shear to obtain the gap thinning amount of the cutting edge of the circle shear after trimming the strip steel of each grade by preset length;
determining the shear blade abrasion coefficient between the rotary shear blade and the strip steel of each grade according to the preset length and the gap thinning amount;
and obtaining the mapping relation between the strip steel strength and the shearing edge wear coefficient according to the strip steel strength corresponding to each grade of strip steel and the shearing edge wear coefficient between the disc shearing edge and each grade of strip steel.
Optionally, the determining, according to the intensity information of the strip steel and the mapping relationship between the strip steel intensity and the shear blade wear coefficient, the shear blade wear coefficient corresponding to the strip steel specifically includes:
according to the strength information of the f-th coiled steel strip and the mapping relation between the strip strength and the shear blade wear coefficient, determining the shear blade wear coefficient k corresponding to the f-th coiled steel stripf(ii) a f, sequentially taking 1,2, … and N;
the method for determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount specifically comprises the following steps:
according to the production sequence of the strip steel, according to the length of each roll of the strip steel and the corresponding shear blade wear coefficient k of each roll of the strip steelfAnd performing summation calculation: sigma kf×sf(ii) a Wherein s isfThe length of the f-th coil of strip steel is kilometer;
when the following conditions are satisfied:
and is
According to the formula:
determining the use mileage of the shearing edge of the circle shear; wherein K is the maximum gap reduction in millimeters; and S is the use mileage of the shearing edge of the circle shear, and the unit is kilometers.
According to a further alternative embodiment of the present invention, there is provided a system for determining a use mileage of a cutting edge of a circle shear, including:
the acquisition module is used for acquiring the information of the strip steel to be produced, the mapping relation between the strength of the strip steel and the wear coefficient of the shearing edge and the maximum gap thinning amount of the shearing edge of the disc shear; the strip steel information comprises length information and strength information of each roll of strip steel in N rolls of strip steel, wherein N is more than or equal to 2 and is an integer; the shear blade wear coefficient is the gap thinning amount of the disc shear blade after trimming the unit length of the strip steel;
the first determining module is used for determining the shearing edge wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relation between the strip steel intensity and the shearing edge wear coefficient;
and the second determining module is used for determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount.
Optionally, the mapping relationship between the strip steel strength and the shear edge wear coefficient is determined according to the following method:
acquiring all steel grades produced by cold rolling and the strip steel strength corresponding to each steel grade;
grouping all the steel types according to the strength of the strip steel and a preset grouping rule to obtain M groups of strip steel; m is not less than 2 and is an integer;
using a circle shear to cut edges of the ith group of strip steel, and obtaining the gap thinning amount of the cutting edge of the circle shear after the cutting edge of the ith group of strip steel is cut to a preset length, wherein i takes values of 1,2, … and M in sequence;
and determining the shear blade wear coefficient between the disc shear blade and the ith group of strip steel according to the preset length and the gap thinning amount.
Optionally, the mapping relationship between the strip steel strength and the shear edge wear coefficient is obtained according to the following method:
acquiring the grades of all the strip steels to be produced and the strip steel strength corresponding to each grade of the strip steel;
trimming the strip steel of each grade by using a circle shear to obtain the gap thinning amount of the cutting edge of the circle shear after trimming the strip steel of each grade by preset length;
determining the shear blade abrasion coefficient between the rotary shear blade and the strip steel of each grade according to the preset length and the gap thinning amount;
and obtaining the mapping relation between the strip steel strength and the shearing edge wear coefficient according to the strip steel strength corresponding to each grade of strip steel and the shearing edge wear coefficient between the disc shearing edge and each grade of strip steel.
Optionally, the first determining module is specifically configured to:
according to the strength information of the f-th coiled steel strip and the mapping relation between the strip strength and the shear blade wear coefficient, determining the shear blade wear coefficient k corresponding to the f-th coiled steel stripf(ii) a f, sequentially taking 1,2, … and N;
the second determining module is specifically configured to:
according to the production sequence of the strip steel, according to the length of each roll of the strip steel and the corresponding shear blade wear coefficient k of each roll of the strip steelfAnd performing summation calculation: sigma kf×sf(ii) a Wherein s isfThe length of the f-th coil of strip steel is kilometer;
when the following conditions are satisfied:
and is
According to the formula:
determining the use mileage of the shearing edge of the circle shear; wherein K is the maximum gap reduction in millimeters; and S is the use mileage of the shearing edge of the circle shear, and the unit is kilometers.
According to still another alternative embodiment of the present invention, there is provided an industrial control device, including a memory, a processor and a computer program stored in the memory and running on the processor, wherein the processor, when executing the program, can implement the method steps for determining the circle shear mileage in the above technical solution.
Through one or more technical schemes of the invention, the invention has the following beneficial effects or advantages:
the invention provides a method for determining the use mileage of a shearing edge of a circle shear, which can determine the wear coefficients of different types of strip steel to the shearing edge of the circle shear according to the intensity information of the strip steel to be produced and the predetermined mapping relation between the intensity of the strip steel and the wear coefficient of the shearing edge; and then, the length of the strip steel to be produced and the maximum gap thinning amount of the cutting edge of the disc shear are combined to comprehensively determine the service mileage of the disc shear. The scheme flexibly collocates the strip steel to be produced according to different periods and different strengths, considers the difference influence of the strip steel with different strengths on the abrasion speed of the shearing edge to determine the use mileage of the shearing edge of the disc shear, and compared with the original fixed scheme of replacing the trimming amount, the scheme not only avoids the waste of the shearing edge caused by the fact that the shearing edge can be continuously used when the low-strength mild steel is continuously produced and the replacement is carried out, but also avoids the problems of edge flying and knife collapsing caused by the fact that the shearing edge is seriously abraded before the replacement mileage is reached when the high-strength mild steel is continuously produced; thereby improving the surface quality of the strip steel and saving the consumption of the cutting edge of the disc shear.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 illustrates a flow chart of a method for determining a distance used by a cutting edge of a circle shear according to one embodiment of the present invention;
figure 2 shows a schematic diagram of a system for determining the mileage used by the cutting edges of a circle shear according to one embodiment of the present invention.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments. Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control. Unless otherwise specifically stated, various apparatuses and the like used in the present invention are either commercially available or can be prepared by existing methods.
In order to more accurately determine the replacement time of the cutting edge of the circle shear, as shown in fig. 1, the invention provides a method for determining the use mileage of the cutting edge of the circle shear, and the overall idea is as follows:
s1: acquiring the information of the strip steel to be produced, the mapping relation between the strength of the strip steel and the wear coefficient of a shear blade and the maximum gap thinning amount of the shear blade of the disc shear; the strip steel information comprises length information and strength information of each roll of strip steel in N rolls of strip steel, wherein N is more than or equal to 2 and is an integer; the shear blade wear coefficient is the gap thinning amount of the disc shear blade after trimming the unit length of the strip steel;
s2: determining a shear blade wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relation between the strip steel intensity and the shear blade wear coefficient;
s3: and determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount.
The improved principle of the scheme is as follows: the strip steel with various strengths can be produced in the cold rolling production process, and the strip steel with different strengths influences the abrasion speed of the shearing edge of the disc shear; therefore, the wear coefficient of the shearing edge of the disc shear by different types of strip steel can be determined according to the intensity information of the strip steel to be produced and the predetermined mapping relation between the intensity of the strip steel and the wear coefficient of the shearing edge, and the wear coefficient represents the thinning amount of the shearing edge gap of the disc shear after the unit length of the strip steel is sheared; and then, the length of the strip steel to be produced and the maximum gap thinning amount of the cutting edge of the disc shear are combined to comprehensively determine the service mileage of the disc shear, and the service mileage represents the replacement time of the cutting edge of the disc shear. In general, the scheme can flexibly and comprehensively consider the influence of the band steel with different strengths on the abrasion speed of the shearing edge according to band steel production plans matched with different strengths in different periods, and more accurately determine the use mileage of the shearing edge of the disc shear; thereby improving the surface quality of the strip steel and saving the consumption of the cutting edge of the disc shear.
In the following, the above scheme is explained in detail:
based on the inventive concept of the above technical solution, in an optional embodiment, a method for grouping according to the strength of the strip steel to be produced and then determining the use mileage of the cutting edges of the circle shears according to the grouped strip steel information is provided, which specifically comprises the following steps:
s1: acquiring the information of the strip steel to be produced, the mapping relation between the strength of the strip steel and the wear coefficient of a shear blade and the maximum gap thinning amount of the shear blade of the disc shear;
specifically, the maximum gap reduction of the shearing edge of the disc shear may be determined according to actual production summaries, or according to product specifications provided by the manufacturer, for example, a maximum gap reduction of 10 passes, i.e., 0.1mm, is desirable. The information of the strip steel to be produced comprises the length of each roll of strip steel and the steel type (or mark) of each roll of strip steel, and can be obtained from a production plan of production scheduling in a cold rolling manufacturing execution system; the strength information of each coil of strip steel can be determined by statistical analysis of inspection and test data of the same coil of steel produced historically according to the steel type (which can be distinguished by brand or internal serial number) corresponding to the strip steel; or may be determined based on the desired strength to be achieved in the production control plan.
The mapping relation of the strength of the strip steel and the wear coefficient of the shear blade is predetermined through a trimming test, and an optional method comprises the following steps:
s101: acquiring all steel grades produced by cold rolling and the strip steel strength corresponding to each steel grade;
s102: grouping all the steel types according to the strength of the strip steel and a preset grouping rule to obtain M groups of strip steel; m is not less than 2 and is an integer;
s103: using a circle shear to cut edges of the ith group of strip steel, and obtaining the gap thinning amount of the cutting edge of the circle shear after the cutting edge of the ith group of strip steel is cut to a preset length, wherein i takes values of 1,2, … and M in sequence;
s104: and determining the shear blade wear coefficient between the disc shear blade and the ith group of strip steel according to the preset length and the gap thinning amount.
Specifically, the mapping relationship between the strip strength and the shear wear coefficient in this embodiment is organized in a manner of grouping the strip strengths. The strip steel strength can be characterized by using yield strength and tensile strength. In the present example, the following description will be given by taking the use of yield strength as an example. The strip steel produced in the cold rolling continuous annealing or continuous annealing hot plating unit comprises mild steel, such as low-carbon steel, interstitial free IF steel and the like; high-strength steels, such as low-alloy high-strength steel, high-strength IF steel, dual-phase steel, transformation induced plasticity steel and the like, relate to dozens of brands; the yield strength of each strip steel (brand) can be determined according to inspection and test data of steel coils produced historically. In general, for a continuous annealing/hot-dip coating unit, when a circle shear positioned at an outlet section is used for trimming, the yield strength range of various types of strip steel is about 100 MPa-900 MPa.
When the mapping relation between the strip steel strength and the shear blade wear coefficient is determined, because the influence of the strip steel with similar yield strength on the wear rate of the shear blade is also very similar, the scheme provided by the embodiment is to group the cold-rolled strip steel according to the yield strength. The grouping number can be selected from 4-6, and can also be selected according to requirements; the yield strength interval may be determined according to a preset grouping rule. Table 1 gives an alternative to grouping according to preset grouping rules:
table 1: grouping information of strip steel
| Packet sequence number | Yield strength range/MPa | Examples of Cold-rolled grades |
| G1 | 100～200 | DC04，DC06 |
| G2 | 200～300 | 240VK |
| G3 | 300～400 | 340LA，590DP |
| G4 | 400～500 | 780DP |
| G5 | 500～900 | 980DP、980TRIP |
And after grouping, carrying out a measurement test on the abrasion coefficient of the shear blade. Taking table 1 as an example, the scheme is: and preparing strip steel with a preset length according to the grouping information, then carrying out a trimming test, and respectively detecting the thickness of the shearing edge of the disc shear before and after trimming to obtain the gap thinning amount of the shearing edge after trimming.
Therefore, the step S104: determining a shear blade wear coefficient between the disc shear blade and the ith group of strip steel according to the preset length and the gap thinning amount, wherein the shear blade wear coefficient is as follows:
according to formula ki＝diL, determining a shear blade wear coefficient between the circle shear blade and the i-th group of strip steels;
wherein k isiThe shear blade wear coefficient between the circle shear blade and the ith group of strip steel is obtained;
dithe gap thinning amount of the shearing edge of the circle shear after the edge of the ith group of strip steel is measured in millimeters;
and L is the preset length and has the unit of kilometers.
The preset length can be selected according to the requirement, such as 80km, 100km, 120km and the like, and is preferably 100 km. For example, if the preset length is 100km, the cutting edge wear coefficient k corresponding to the ith group of strip steeli＝di/100。
By the scheme, the shear blade wear coefficient corresponding to each group of strip steel can be obtained, the yield strength of all the groups and the corresponding shear blade wear coefficient are stored in a data table, and the mapping relation between the strip steel strength and the shear blade wear coefficient is obtained.
Example data for a strip strength-shear wear coefficient mapping is shown in table 2:
table 2: data examples for shear edge wear experiments
According to the mapping relation between the strength of the strip steel and the wear coefficient of the cutting edge determined in the steps, in actual production, an optional scheme for determining the service mileage of the disc shear is as follows:
the S2: determining the shear blade wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relation between the intensity of the strip steel and the shear blade wear coefficient, and specifically comprising the following steps:
s21: according to the strength information of the f-th coiled steel strip and the mapping relation between the strip strength and the shear blade wear coefficient, determining the shear blade wear coefficient k corresponding to the f-th coiled steel stripf(ii) a f, sequentially taking 1,2, … and N;
the S3: determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount, and specifically comprising the following steps:
s311: according to the production sequence of the strip steel, according to the length of each roll of the strip steel and the corresponding shear blade wear coefficient k of each roll of the strip steelfPerforming a summation calculation: sigma kf×sf(ii) a Wherein s isfThe length of the f-th coil of strip steel is kilometer;
through summation calculation, the calculation value of the accumulated gap thinning amount of the shearing edge of the disc shear after a certain number of steel coils are continuously produced can be obtained.
S312: when the following conditions are satisfied:
and is
According to the formula:
determining the use mileage of the shearing edge of the circle shear; wherein Z is an integer, and K is the maximum gap reduction in millimeters; and S is the use mileage of the shearing edge of the circle shear, and the unit is kilometers.
Specifically, when the accumulated gap thinning amount is calculated to the Z-th coil of steel, the preset maximum gap thinning amount is reached, and the total length from the 1 st coil of strip steel to the Z-th coil of strip steel of the production plan is the service life of the shearing edge of the disc shear matched with the current production plan.
In practice, for the sake of safety, it can also be based on
Determining the mileage of the cutting edge of the circle shear.
In general, the scheme provided by this embodiment is to group the strip steels to be produced according to strength, then obtain the corresponding shear blade wear coefficient based on the grouped strip steels, and comprehensively determine the service mileage of the shear blades of the disc shears according to the total length and the maximum thickness wear amount of each group of strip steels. The original discrete multiple strip steels are grouped according to strength, and the shear blade abrasion coefficient is determined according to the grouping, so that the workload of measuring the shear blade abrasion coefficient can be reduced, the problem that the shear blade can be continuously used to cause shear blade waste when the finally obtained shear blade use mileage can well solve the problem that the shear blade can be continuously used to continuously produce low-strength mild steel, and the problems of flash and cutter breakage caused by the fact that the shear blade is seriously abraded before the mileage is changed when the high-strength mild steel is continuously produced.
By applying the scheme to a certain continuous annealing production line for trial, 20 blades of cutting edges can be saved in each month compared with before trial; and for high-strength steel, 50 tons of flash and broken heavy coils can be reduced every month, and the yield is saved by 5 percent by reducing the heavy coils per ton.
The foregoing embodiments are grouped according to the strength of the strip steel, and in fact, the cutting edge wear coefficient corresponding to each grade of strip steel may also be determined directly according to the grade of the strip steel, and then, during actual production, the service life of the cutting edge of the circle shear is determined according to the grade and the corresponding length of each rolled strip steel. Thus in a further alternative embodiment, a method of determining the range of use is provided as follows:
s1: acquiring the information of the strip steel to be produced, the mapping relation between the strength of the strip steel and the wear coefficient of a shear blade and the maximum gap thinning amount of the shear blade of the disc shear; the strip steel information further comprises steel type information, namely brand information, corresponding to each roll of strip steel on the basis of the length information and the strength information of each roll of strip steel.
The mapping relation between the strip steel strength and the shear blade wear coefficient is obtained according to the following method:
s105: acquiring the grades of all the strip steels to be produced and the strip steel strength corresponding to each grade of the strip steel;
s106: trimming the strip steel of each grade by using a circle shear to obtain the gap thinning amount of the cutting edge of the circle shear after trimming the strip steel of each grade by preset length;
specifically, for each grade of strip steel, a preset length is arranged for carrying out a trimming test.
S107: determining the shear blade abrasion coefficient between the rotary shear blade and the strip steel of each grade according to the preset length and the gap thinning amount;
s108: and obtaining the mapping relation between the strip steel strength and the shearing edge wear coefficient according to the strip steel strength corresponding to each grade of strip steel and the shearing edge wear coefficient between the disc shearing edge and each grade of strip steel.
Therefore, the cutting edge wear coefficient corresponding to each grade of strip steel is determined as follows:
according to formula ki＝diL, determining the shear blade wear coefficient between the shearing blade of the circle shear and the i-th grade strip steel;
wherein k isiThe abrasion coefficient of the shear blade between the shear blade of the circle shear and the steel strip of the ith grade is obtained;
difor trimming the shearing edges of the circle shearsThe gap thinning amount behind the steel strip of the ith grade is in millimeters;
and L is the preset length and has the unit of kilometers.
Through a trimming test, the wear coefficient of the shearing edge of the disc shear corresponding to each grade of strip steel can be obtained, so that the mapping relation between the strength of the strip steel and the wear coefficient of the shearing edge related to the grade is established.
Similarly, the scheme for determining the use mileage of the cutting edge of the circle shear comprises the following steps:
the S2: determining the shear blade wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relation between the intensity of the strip steel and the shear blade wear coefficient, and specifically comprising the following steps:
s22: according to the intensity information of the t-th coiled steel strip and the mapping relation between the strip intensity and the shear blade wear coefficient, determining the shear blade wear coefficient k corresponding to the t-th coiled steel stript(ii) a t sequentially takes 1,2, … and N;
the S3: determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount, and specifically comprising the following steps:
s321: according to the production sequence of the strip steel, according to the length of each roll of the strip steel and the corresponding shear blade wear coefficient k of each roll of the strip steeltAnd performing summation calculation: sigma kt×st；
S322: when the following conditions are satisfied:
and is
According to the formula:
determining the use mileage of the shearing edge of the circle shear; wherein s istThe length of the t-th coil of strip steel is kilometres; k is the maximum gap reduction in millimeters; and S is the use mileage of the shearing edge of the circle shear, and the unit is kilometers.
In general, the cutting edge wear coefficient corresponding to each coil of strip steel to be produced is determined according to the mark, so that the finally determined use mileage of the disc shear cutting edge can be more accurate.
Based on the same inventive concept of the foregoing embodiment, in yet another alternative embodiment, as shown in fig. 2, there is further provided a system for determining a use mileage of a cutting edge of a circle shear, including:
the acquisition module 10 is used for acquiring the information of the strip steel to be produced, the mapping relation between the intensity of the strip steel and the wear coefficient of the shearing edge and the maximum gap thinning amount of the shearing edge of the disc shear; the strip steel information comprises length information and strength information of each roll of strip steel in N rolls of strip steel, wherein N is more than or equal to 2 and is an integer; the shear blade wear coefficient is the gap thinning amount of the disc shear blade after trimming the unit length of the strip steel;
the first determining module 20 is configured to determine a cutting edge wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relationship between the strip steel intensity and the cutting edge wear coefficient;
and the second determining module 30 is configured to determine the service mileage of the shearing edge of the circle shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel, and the maximum gap thinning amount.
Optionally, the mapping relationship between the strip steel strength and the shear edge wear coefficient is determined according to the following method:
acquiring all steel grades produced by cold rolling and the strip steel strength corresponding to each steel grade;
grouping all the steel types according to the strength of the strip steel and a preset grouping rule to obtain M groups of strip steel; m is not less than 2 and is an integer;
using a circle shear to cut edges of the ith group of strip steel, and obtaining the gap thinning amount of the cutting edge of the circle shear after the cutting edge of the ith group of strip steel is cut to a preset length, wherein i takes values of 1,2, … and M in sequence;
and determining the shear blade wear coefficient between the disc shear blade and the ith group of strip steel according to the preset length and the gap thinning amount.
Optionally, the mapping relationship between the strip steel strength and the shear edge wear coefficient is obtained according to the following method:
acquiring the grades of all the strip steels to be produced and the strip steel strength corresponding to each grade of the strip steel;
trimming the strip steel of each grade by using a circle shear to obtain the gap thinning amount of the cutting edge of the circle shear after trimming the strip steel of each grade by preset length;
determining the shear blade abrasion coefficient between the rotary shear blade and the strip steel of each grade according to the preset length and the gap thinning amount;
and obtaining the mapping relation between the strip steel strength and the shearing edge wear coefficient according to the strip steel strength corresponding to each grade of strip steel and the shearing edge wear coefficient between the disc shearing edge and each grade of strip steel.
Optionally, the first determining module 20 is specifically configured to:
according to the strength information of the f-th coiled steel strip and the mapping relation between the strip strength and the shear blade wear coefficient, determining the shear blade wear coefficient k corresponding to the f-th coiled steel stripf(ii) a f, sequentially taking 1,2, … and N;
the second determining module 30 is specifically configured to:
according to the production sequence of the strip steel, according to the length of each roll of the strip steel and the corresponding shear blade wear coefficient k of each roll of the strip steelfAnd performing summation calculation: sigma kf×sf；
When the following conditions are satisfied:
and is
According to the formula:
determining the use mileage of the shearing edge of the circle shear; wherein s isfThe length of the f-th coil of strip steel is kilometer; k is the maximum gap reduction in millimeters; and S is the use mileage of the shearing edge of the circle shear, and the unit is kilometers.
Based on the same inventive concept of the foregoing embodiments, in yet another alternative embodiment, an industrial control device is provided, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, the steps of the method for determining the use mileage of the circle shear in the foregoing embodiments can be implemented.
Through one or more embodiments of the present invention, the present invention has the following advantageous effects or advantages:
the invention provides a method for determining the use mileage of a shearing edge of a circle shear, which can determine the wear coefficients of different types of strip steel to the shearing edge of the circle shear according to the intensity information of the strip steel to be produced and the predetermined mapping relation between the intensity of the strip steel and the wear coefficient of the shearing edge; and then, the length of the strip steel to be produced and the maximum gap thinning amount of the cutting edge of the disc shear are combined to comprehensively determine the service mileage of the disc shear. The scheme flexibly collocates the strip steel to be produced according to different periods and different strengths, considers the difference influence of the strip steel with different strengths on the abrasion speed of the shearing edge to determine the use mileage of the shearing edge of the disc shear, and compared with the original fixed scheme of replacing the trimming amount, the scheme not only avoids the waste of the shearing edge caused by the fact that the shearing edge can be continuously used when the low-strength mild steel is continuously produced and the replacement is carried out, but also avoids the problems of edge flying and knife collapsing caused by the fact that the shearing edge is seriously abraded before the replacement mileage is reached when the high-strength mild steel is continuously produced; thereby improving the surface quality of the strip steel and saving the consumption of the cutting edge of the disc shear.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A method of determining a range of use of a cutting edge of a circle shear, the method comprising:
acquiring the information of the strip steel to be produced, the mapping relation between the strength of the strip steel and the wear coefficient of a shear blade and the maximum gap thinning amount of the shear blade of the disc shear; the strip steel information comprises length information and strength information of each roll of strip steel in N rolls of strip steel, wherein N is more than or equal to 2 and is an integer; the shear blade wear coefficient is the gap thinning amount of the disc shear blade after trimming the unit length of the strip steel;
determining a shear blade wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relation between the strip steel intensity and the shear blade wear coefficient;
and determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount.
2. The method of claim 1, wherein the strip strength-shear wear coefficient map is determined according to the following method:
acquiring all steel grades produced by cold rolling and the strip steel strength corresponding to each steel grade;
grouping all the steel types according to the strength of the strip steel and a preset grouping rule to obtain M groups of strip steel; m is not less than 2 and is an integer;
using a circle shear to cut edges of the ith group of strip steel, and obtaining the gap thinning amount of the cutting edge of the circle shear after the cutting edge of the ith group of strip steel is cut to a preset length, wherein i takes values of 1,2, … and M in sequence;
and determining the shear blade wear coefficient between the disc shear blade and the ith group of strip steel according to the preset length and the gap thinning amount.
3. The method of claim 2, wherein the shear blade wear coefficient between the circle shear blade and the ith set of strip steel is determined according to the preset length and the gap thinning amount as follows:
according to formula ki＝diL, determining a shear blade wear coefficient between the circle shear blade and the i-th group of strip steels;
wherein k isiThe shear blade wear coefficient between the circle shear blade and the ith group of strip steel is obtained;
dithe gap thinning amount of the shearing edge of the circle shear after the edge of the ith group of strip steel is measured in millimeters;
and L is the preset length and has the unit of kilometers.
4. The method of claim 1, wherein the strip strength-shear wear coefficient map is obtained by:
acquiring the grades of all the strip steels to be produced and the strip steel strength corresponding to each grade of the strip steel;
trimming the strip steel of each grade by using a circle shear to obtain the gap thinning amount of the cutting edge of the circle shear after trimming the strip steel of each grade by preset length;
determining the shear blade abrasion coefficient between the rotary shear blade and the strip steel of each grade according to the preset length and the gap thinning amount;
and obtaining the mapping relation between the strip steel strength and the shearing edge wear coefficient according to the strip steel strength corresponding to each grade of strip steel and the shearing edge wear coefficient between the disc shearing edge and each grade of strip steel.
5. The method for determining according to claim 1, wherein the determining of the shear wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relationship between the strip steel intensity and the shear wear coefficient specifically includes:
according to the strength information of the f-th coiled steel strip and the mapping relation between the strip strength and the shear blade wear coefficient, determining the shear blade wear coefficient k corresponding to the f-th coiled steel stripf(ii) a f, sequentially taking 1,2, … and N;
the method for determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount specifically comprises the following steps:
according to the production sequence of the strip steel, according to the length of each roll of the strip steel and the corresponding shear blade wear coefficient k of each roll of the strip steelfAnd performing summation calculation: sigma kf×sf(ii) a Wherein s isfThe length of the f-th coil of strip steel is kilometer;
when the following conditions are satisfied:
and is
According to the formula:
determining the use mileage of the shearing edge of the circle shear; wherein K is the maximum gap reduction in millimeters; and S is the use mileage of the shearing edge of the circle shear, and the unit is kilometers.
6. A system for determining the mileage with which a cutting edge of a circle shear is used, the system comprising:
the acquisition module is used for acquiring the information of the strip steel to be produced, the mapping relation between the strength of the strip steel and the wear coefficient of the shearing edge and the maximum gap thinning amount of the shearing edge of the disc shear; the strip steel information comprises length information and strength information of each roll of strip steel in N rolls of strip steel, wherein N is more than or equal to 2 and is an integer; the shear blade wear coefficient is the gap thinning amount of the disc shear blade after trimming the unit length of the strip steel;
the first determining module is used for determining the shearing edge wear coefficient corresponding to the strip steel according to the intensity information of the strip steel and the mapping relation between the strip steel intensity and the shearing edge wear coefficient;
and the second determining module is used for determining the service mileage of the shearing edge of the disc shear according to the length information of the strip steel, the shearing edge wear coefficient corresponding to the strip steel and the maximum gap thinning amount.
7. The determination system of claim 6 wherein said strip strength-shear wear coefficient mapping is determined according to the following method:
acquiring all steel grades produced by cold rolling and the strip steel strength corresponding to each steel grade;
grouping all the steel types according to the strength of the strip steel and a preset grouping rule to obtain M groups of strip steel; m is not less than 2 and is an integer;
using a circle shear to cut edges of the ith group of strip steel, and obtaining the gap thinning amount of the cutting edge of the circle shear after the cutting edge of the ith group of strip steel is cut to a preset length, wherein i takes values of 1,2, … and M in sequence;
and determining the shear blade wear coefficient between the disc shear blade and the ith group of strip steel according to the preset length and the gap thinning amount.
8. The determination system of claim 6, wherein the strip strength-shear wear coefficient map is obtained according to the following method:
acquiring the grades of all the strip steels to be produced and the strip steel strength corresponding to each grade of the strip steel;
trimming the strip steel of each grade by using a circle shear to obtain the gap thinning amount of the cutting edge of the circle shear after trimming the strip steel of each grade by preset length;
determining the shear blade abrasion coefficient between the rotary shear blade and the strip steel of each grade according to the preset length and the gap thinning amount;
and obtaining the mapping relation between the strip steel strength and the shearing edge wear coefficient according to the strip steel strength corresponding to each grade of strip steel and the shearing edge wear coefficient between the disc shearing edge and each grade of strip steel.
9. The determination system of claim 6, wherein the first determination module is specifically configured to:
according to the strength information of the f-th coil strip steel and the strength of the strip steelDetermining the shear blade wear coefficient k corresponding to the f-th coiled strip steel according to the mapping relation of the degree and the shear blade wear coefficientf(ii) a f, sequentially taking 1,2, … and N;
the second determining module is specifically configured to:
according to the production sequence of the strip steel, according to the length of each roll of the strip steel and the corresponding shear blade wear coefficient k of each roll of the strip steelfAnd performing summation calculation: sigma kf×sf(ii) a Wherein s isfThe length of the f-th coil of strip steel is kilometer;
when the following conditions are satisfied:
and is
According to the formula:
determining the use mileage of the shearing edge of the circle shear; wherein K is the maximum gap reduction in millimeters; and S is the use mileage of the shearing edge of the circle shear, and the unit is kilometers.
10. An industrial control device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program is adapted to carry out the method steps of any of claims 1 to 5.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114442559A (en) * | 2022-02-18 | 2022-05-06 | 邯郸钢铁集团有限责任公司 | Method for monitoring state of cutting edge of circle shear |
| CN114871490A (en) * | 2022-04-07 | 2022-08-09 | 首钢集团有限公司 | Method, device, medium and equipment for improving high-strength steel edge cutting quality |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3583266A (en) * | 1968-04-11 | 1971-06-08 | Kazuyoshi Kondo | Shearing process |
| CN101648352A (en) * | 2009-09-02 | 2010-02-17 | 大连华锐股份有限公司 | Adjusting and detecting device for cutting edge gap of rotary cutter and detecting method thereof |
| CN101823217A (en) * | 2010-04-01 | 2010-09-08 | 河北文丰钢铁有限公司 | Circle shear blade repairing and sharpening device |
| CN103406583A (en) * | 2013-09-02 | 2013-11-27 | 北京科技大学 | Scrap shearing system and shearing method of cold-rolled wide-width thin band steel |
| CN109604709A (en) * | 2018-10-24 | 2019-04-12 | 首钢京唐钢铁联合有限责任公司 | A kind of Continuous Hot Dip Galvanizing Line end trimming shears state of wear judgment method and device |
-
2021
- 2021-04-07 CN CN202110370739.1A patent/CN113118869B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3583266A (en) * | 1968-04-11 | 1971-06-08 | Kazuyoshi Kondo | Shearing process |
| CN101648352A (en) * | 2009-09-02 | 2010-02-17 | 大连华锐股份有限公司 | Adjusting and detecting device for cutting edge gap of rotary cutter and detecting method thereof |
| CN101823217A (en) * | 2010-04-01 | 2010-09-08 | 河北文丰钢铁有限公司 | Circle shear blade repairing and sharpening device |
| CN103406583A (en) * | 2013-09-02 | 2013-11-27 | 北京科技大学 | Scrap shearing system and shearing method of cold-rolled wide-width thin band steel |
| CN109604709A (en) * | 2018-10-24 | 2019-04-12 | 首钢京唐钢铁联合有限责任公司 | A kind of Continuous Hot Dip Galvanizing Line end trimming shears state of wear judgment method and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114442559A (en) * | 2022-02-18 | 2022-05-06 | 邯郸钢铁集团有限责任公司 | Method for monitoring state of cutting edge of circle shear |
| CN114871490A (en) * | 2022-04-07 | 2022-08-09 | 首钢集团有限公司 | Method, device, medium and equipment for improving high-strength steel edge cutting quality |
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