CN115041530A - Determination method for steel rolling shearing optimal multiple length - Google Patents
Determination method for steel rolling shearing optimal multiple length Download PDFInfo
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- CN115041530A CN115041530A CN202210732327.2A CN202210732327A CN115041530A CN 115041530 A CN115041530 A CN 115041530A CN 202210732327 A CN202210732327 A CN 202210732327A CN 115041530 A CN115041530 A CN 115041530A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/12—Length
Abstract
The invention discloses a method for determining the optimal multiple length of steel rolling shearing, which comprises the following steps of calculating the lengths a of finished products with different specifications and fixed lengths according to the weight of a steel billet; calculating the value m of the finished product length a/the fixed length b; all factors q of the value m are solved, and all factors are arranged from small to large to obtain q 0 、q 1 、…、q n (ii) a Calculating to obtain a multiple length s according to the factor q and the fixed length b; obtaining all the multiple length according to calculation and arranging s according to the sequence from big to small n 、s n‑1 、…、s 1 If s is m <L<s m+1 Then s m The final multiple length and the first cutter length; multiple length s m Corresponding to a factor q m The shearing times of the multiple length shear is p = m/q m -1; length s of multiple length m And the shearing frequency p of the multiple length shear is input into a system to control the steel rolling shearing. The invention can realize the production of the fixed-length deformed steel bars with different specifications, the non-fixed-length can be accurately controlled, and the yield is improved.
Description
Technical Field
The invention relates to a method for determining a multiple length, in particular to a method for determining an optimal multiple length for steel rolling shearing, belonging to the technical field of steel rolling.
Background
Due to different abrasion degrees of copper pipes of the continuous casting crystallizer, multi-machine multi-stream production is realized, and the weight of each steel billet cannot be completely consistent; when steel rolling is carried out in normal production, billets with the same weight are used for deformed steel bars with different specifications and fixed sizes, the produced non-fixed sizes are also different, one billet is subjected to heating furnace burning loss removal, flying shear head and tail cutting, cold shear head and short end cutting and the like, and the rest is finished products; and (3) shearing the finished steel bars by a multiple-length flying shear according to the total length, and then regularly throwing the steel bars to a cooling bed according to the specified length. The fixed count of deformed steel bar finished product package and length, because non-scale length is different to and first sword, multiple length, tail sword length are different, cause each sword deformed steel bar count that cold shears sheared to be different, and have including non-scale mixes, carry the finishing cold bed, need the manual work to choose out non-scale, and will use machine or manual work to carry out some counts, need the enterprise to drop into a large amount of manpowers, cause economic waste. If the length of the first cutter and the length of the multiple length are consistent, the tail cutter just has a length which is not fixed length and is more than the multiple length, the separation of the non-fixed length and the fixed length can be realized, the number of the large flat support is the same as that of the finished product bag, the cold shearing machine shears the finished product bag once, the finished product bag is finished without counting and selecting the non-fixed length, and the unmanned operation is realized. It is therefore necessary to devise a new method for determining an optimal multiple length.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for determining the optimal multiple length of steel rolling shearing, solving the problem that the length of a tail cutter is longer than the length of a multiple length which is not a fixed length and the problem that the lengths of a head cutter and the multiple length are consistent.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for determining the optimal multiple length of rolled steel shearing is characterized by comprising the following steps:
s1, calculating the length a of finished products with different specifications and fixed sizes according to the weight of the steel billet;
s2, calculating the value m of the finished product length a/the fixed length b;
s3, all factors q of the value m are obtained, and all factors are arranged from small to large to obtain q 0 、q 1 、…、q n ；
S4, calculating the length S according to the factor q and the fixed length b;
s5, calculating all the multiple lengths according to the step S4 and arranging the multiple lengths in the descending order S n 、s n-1 、…、s 1 If s is m <L<s m+1 Then s m The final multiple length and the first cutter length;
s6, length of multiple length S m Corresponding factor q m The shearing times of the multiple length shear is p = m/q m -1；
S7, multiplying length S m And the shearing frequency p of the multiple length shear is input into a system to control the steel rolling shearing.
Further, the step S1 is specifically: the steel billet rice weight, the steel density and the billet length of the steel billet are known values, the Rulon billet weight of the steel billet can be calculated, and the finished product length a can be calculated according to the corresponding fixed length, three thousandths of oxidation burning loss of the rolled steel wire, the flying shear cutting waste weight in the rolling area and the actual meter weight.
Further, in step S2, the integer part of the value m cannot be prime, and when the integer part of the value m is prime, the final length a of the billet is adjusted until the integer part of the value m is not prime.
Further, the adjustment of the finished length a of the billet is realized by adjusting the steel rolling parameters.
Further, the step S3 is specifically: decomposing the prime factors of the value m, then obtaining all the factors q according to the prime factors obtained by decomposition, and arranging all the obtained factors q from small to large to obtain q 0 、q 1 、…、q n 。
Further, the step S5 is specifically: all the multiple lengths are calculated according to step S4 and arranged in descending order S n 、s n-1 、…、s 1 Comparing the length of all multiple lengths with the length L of the cooling bed one by one from large to small, when sn is>When L, continuing to calculate sn-1, when sn-1>Continuing to calculate Sn-2 when L, and repeating the calculation and comparison process until s is reached m <L<s m+1 Then s m Final multiple length and first knife length.
Further, the value m is dividedAll the prime factors obtained by solving the prime factors are arranged from small to large, the calculation sequence of the factor from large to small is determined according to the number of the prime factors and the selected sequence, when one factor is not obtained by calculation, the corresponding multiple length s is calculated, the value of the multiple length s is compared with the length L of the cooling bed, and when the multiple length s is determined m The calculation is stopped immediately.
Compared with the prior art, the invention has the following advantages and effects:
1. the method for determining the optimal multiple length of the steel rolling shearing can realize the production of the fixed-length deformed steel bars with different specifications, the non-fixed-length can be accurately controlled, and the yield is improved;
2. the invention realizes the consistency of the first cutter and the multiple length, the tail cutter just has one non-fixed length more than the multiple length, and the separation of the non-fixed length and the fixed length can be realized; and the large flat support stripping count is the same as the finished product package count, the finished product package is obtained by shearing once by the cold shearing machine, the count counting and the non-fixed-length sorting are not needed in the finish rolling, the unmanned operation is realized, the counting is not needed manually or by a machine, the production rhythm is improved, and the number of posts is reduced.
Drawings
FIG. 1 is a flow chart of the method for determining the optimal multiple of the shearing length of rolled steel according to the invention.
Fig. 2 is a table for estimating the length of a finished billet in example 1 of the present invention.
Fig. 3 is a table of the length of multiple scales determination of example 1 of the present invention.
Fig. 4 is a table for estimating the length of a finished billet in example 2 of the present invention.
Fig. 5 is a table of the length of multiple scales determination of embodiment 2 of the present invention.
Detailed Description
To elaborate on technical solutions adopted by the present invention to achieve predetermined technical objects, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, it is obvious that the described embodiments are only partial embodiments of the present invention, not all embodiments, and technical means or technical features in the embodiments of the present invention may be replaced without creative efforts, and the present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.
As shown in FIG. 1, the method for determining the optimal multiple length of the rolled steel shear of the invention is characterized by comprising the following steps:
s1, calculating the length a of finished products with different specifications and fixed sizes according to the weight of the steel billet; the steel billet rice weight, the steel density and the billet length of the steel billet are known values, the Rulon billet weight of the steel billet can be calculated, and the finished product length a can be calculated according to the corresponding fixed length, three thousandths of oxidation burning loss of the rolled steel wire, the flying shear cutting waste weight in the rolling area and the actual meter weight.
S2, calculating the value m of the finished product length a/the fixed length b; and when the integer part of the value m is prime, adjusting the finished length a of the billet until the integer part of the value m is not prime. The adjustment of the finished length a of the billet is realized by adjusting the steel rolling parameters.
S3, decomposing the prime factors of the value m, then obtaining all the factors q according to the prime factors obtained by decomposition, and arranging all the obtained factors q from small to large to obtain q 0 、q 1 、…、q n 。
S4, calculating the length of multiple length S according to the factor q, wherein S = q b;
s5, calculating all the multiple length according to the step S4 and arranging the multiple length S from big to small n 、s n-1 、…、s 1 If s is m <L<s m+1 Then s m Final multiple length and first knife length.
Specifically, all the multiple lengths are calculated according to step S4 and arranged in descending order S n 、s n-1 、…、s 1 Comparing the length of all multiple lengths with the length L of the cooling bed one by one from large to small, when sn is>When L, continuing to calculate sn-1, when sn-1>Continuing to calculate Sn-2 when L, and repeating the calculation and comparison process until s is reached m <L<s m+1 Then s m Final multiple length and first knife length.
S6, length of multiple length S m Corresponding to a factor q m The shearing times of the multiple length shear is p = m/q m -1；
S7, multiplying length S m And the shearing frequency p of the multiple length shear is input into a system to control the steel rolling shearing.
In the calculating process, in order to reduce the calculating steps, all the prime factors obtained by decomposing the prime factors by the value m are arranged from small to large, the calculating sequence of the factors from large to small is determined according to the number of the prime factors and the selected sequence, when no factor is obtained by calculation, the corresponding multiple length s is calculated, the value of s is compared with the length L of the cooling bed, and when the multiple length s is determined m The calculation is stopped immediately.
The present invention will be further illustrated by the following specific examples.
Example 1:
a method for determining the optimal multiple length of rolled steel shearing is used for a phi 16mm x 4 cutting process, and a 12 m fixed length is taken as an example, and comprises the following steps:
s1, as shown in figure 2, calculating the finished product length with different specifications and fixed sizes according to the weight of the steel billet.
And S2, calculating a value m of the actual length/the fixed length of the finished product, 543.06/12=45.255, and the integral part is 45.
And S3, decomposing the prime factors by 45 to obtain corresponding factors 3,3 and 5.
S4, S =12 × 3 × 5=180 > 132, and recalculation is performed, S =12 × 3=108 < 132;
s5, the S value is maximum 108;
s6, as shown in fig. 3, 108 is taken as the multiple length and the first knife length, and the number of times of double length shearing is 5-1= 4.
Example 2:
a method for determining the optimal multiple length of rolled steel shearing is used for a phi 18mm x 3 cutting process, and a 12 m fixed length is taken as an example, and comprises the following steps:
s1, as shown in FIG. 4, the lengths of the finished products with different specifications and fixed sizes are calculated according to the weight of the steel billet.
S2, calculating a value m of the actual length/the fixed length of the finished product, 572.02/12=47.669, and the integer part is 47;
s3, decomposing the prime factors 45, wherein 47 is a prime number, and adjusting the length of the billet; 579.24/12=48.27, the integer position is 48,48 is not a prime number; decomposing the prime factors to obtain corresponding factors 2,2,2,2 and 3;
s4, S =12 × 2 × 3=288 > 132, recalculating, S =12 × 2=192 < 132, recalculating S =12 × 3 × 2=144 > 132, recalculating S =12 × 2=96 < 132;
s5, the S value is 96 at most;
s6, as shown in fig. 5, the length of the first blade is taken as 96 times, and the number of times of cutting by the double-length shear is 6-1=5 times.
The embodiment shows that the length of the final tail cutter is only longer than the multiple length by a small non-fixed length, and the yield is greatly improved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A method for determining the optimal multiple length of rolled steel shearing is characterized by comprising the following steps:
s1, calculating the length a of finished products with different specifications and fixed sizes according to the weight of the steel billet;
s2, calculating the value m of the finished product length a/the fixed length b;
s3, all factors q of the value m are obtained, and all factors are arranged from small to large to obtain q 0 、q 1 、…、q n ；
S4, calculating the length S according to the factor q and the fixed length b;
s5, calculating all the multiple length according to the step S4 and obtaining the multiple length according to the multiple lengthArranged in order of size s n 、s n-1 、…、s 1 If s is m <L<s m+1 Then s m The final multiple length and the first cutter length;
s6, length of multiple length S m Corresponding to a factor q m The shearing times of the multiple length shear is p = m/q m -1；
S7, multiplying length S m And the shearing frequency p of the multiple length shear is input into a system to control the steel rolling shearing.
2. The method for determining the optimal multiple length of the rolled steel shearing as claimed in claim 1, wherein the method comprises the following steps: the step S1 specifically includes: the steel billet rice weight, the steel density and the billet length of the steel billet are known values, the Rulon billet weight of the steel billet can be calculated, and the finished product length a can be calculated according to the corresponding fixed length, three thousandths of oxidation burning loss of the rolled steel wire, the flying shear cutting waste weight in the rolling area and the actual meter weight.
3. The method for determining the optimal multiple length of the rolled steel shearing as claimed in claim 1, wherein the method comprises the following steps: in step S2, the integer part of the value m cannot be prime, and when the integer part of the value m is prime, the finished length a of the billet is adjusted until the integer part of the value m is not prime.
4. The method for determining the optimal multiple length of the rolled steel shearing as claimed in claim 3, wherein the method comprises the following steps: the adjustment of the finished product length a of the steel billet is realized by adjusting steel rolling parameters.
5. The method for determining the optimal multiple length of the rolled steel shearing as claimed in claim 1, wherein the method comprises the following steps: the step S3 specifically includes: decomposing the prime factors of the value m, then obtaining all the factors q according to the prime factors obtained by decomposition, and arranging all the obtained factors q from small to large to obtain q 0 、q 1 、…、q n 。
6. A process according to claim 5The method for determining the optimal multiple length of steel rolling shearing is characterized by comprising the following steps of: the step S5 specifically includes: all the multiple lengths are calculated according to step S4 and arranged in descending order S n 、s n-1 、…、s 1 Comparing the length of all multiple lengths with the length L of the cooling bed one by one from large to small, when sn is>When L, continuing to calculate sn-1, when sn-1>Continuing to calculate Sn-2 when L, and repeating the calculation and comparison process until s is reached m <L<s m+1 Then s m Final multiple length and first knife length.
7. The method for determining the optimal multiple length of the rolled steel shearing as claimed in claim 6, wherein the method comprises the following steps: arranging all the prime factors obtained by decomposing the prime factors by the value m from small to large, determining the calculation sequence of the prime factors from large to small according to the number of the prime factors and the selected sequence, calculating the corresponding multiple length s when no factor is obtained, comparing the value of s with the length L of the cooling bed, and determining the multiple length s when the multiple length s is determined m The calculation is stopped immediately.
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| CN202210732327.2A CN115041530A (en) | 2022-06-27 | 2022-06-27 | Determination method for steel rolling shearing optimal multiple length |
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| CN202210732327.2A CN115041530A (en) | 2022-06-27 | 2022-06-27 | Determination method for steel rolling shearing optimal multiple length |
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