CN110842052A - Steel coil splitting method and device - Google Patents
Steel coil splitting method and device Download PDFInfo
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- CN110842052A CN110842052A CN201911025295.7A CN201911025295A CN110842052A CN 110842052 A CN110842052 A CN 110842052A CN 201911025295 A CN201911025295 A CN 201911025295A CN 110842052 A CN110842052 A CN 110842052A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
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Abstract
The embodiment of the invention provides a steel coil splitting method and a steel coil splitting device, wherein the method comprises the following steps: determining the length of the standard roll according to the preset weight of the standard roll, wherein the weight of the standard roll is 12-12.5 t; acquiring the maximum weight and the minimum weight of a finished product small roll in a target order; determining the maximum length of the finished small rolls according to the weight of the finished rolls in unit length and the maximum weight of the finished small rolls, and determining the minimum length of the finished small rolls according to the weight of the finished rolls in unit length and the minimum weight of the finished small rolls; judging whether the length of the standard roll is in a length value range between the maximum length and the minimum length of the finished small roll, and if the weight of the standard roll is in the weight value range of the finished small roll, dividing the finished small roll according to the length of the standard roll.
Description
Technical Field
The invention relates to the technical field of steel coil splitting, in particular to a steel coil splitting method and a steel coil splitting device.
Background
The packaging cost of the finished rolls is also a significant expense in the production cost of the strip. In the prior art, when the finished product roll is split according to the order requirement, the packaging cost of the finished product roll is very high, so that the packaging cost of the whole finished product roll is very high.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a steel coil splitting method and a steel coil splitting device, which are used for solving the technical problem that the cost of the whole finished coil packaging cost is too high due to high packaging cost of a finished small coil when a finished coil is split in the prior art.
The invention provides a steel coil splitting method, which comprises the following steps:
determining the length of the standard roll according to the preset weight of the standard roll, wherein the weight of the standard roll is 12-12.5 t;
acquiring the maximum weight and the minimum weight of a finished product small roll in a target order;
determining the maximum length of the finished small rolls according to the weight of the finished rolls in unit length and the maximum weight of the finished small rolls, and determining the minimum length of the finished small rolls according to the weight of the finished rolls in unit length and the minimum weight of the finished small rolls;
and judging whether the length of the standard roll is in a length value range between the maximum length and the minimum length of the finished small roll, and if the length of the standard roll is in the length value range of the finished small roll, dividing the finished small roll according to the length of the standard roll.
In the above solution, the determining the length of the standard roll according to the preset weight of the standard roll includes:
determining the length p _ work of the standard volume according to a formula p _ work, pmul _ std ═ p _ PLANT, STD _ w [ (1/p _ EMU, EMU _ sw _ pd) ] p _ work, ELONG _ f _ total; wherein the content of the first and second substances,
the p _ PLANT.STD _ w is the weight of the standard roll, the p _ EMU.EMU _ sw _ pd is the weight of the unit length of the standard roll, and the p _ WORK.ELONG _ f _ total is the elongation coefficient of the finished roll.
In the foregoing solution, the splitting the finished product roll according to the length of the standard roll includes:
performing standard bundling on the finished product roll for n times based on the length of the standard roll to obtain n standard rolls;
obtaining the residual length of the finished product roll after the roll division for n times, and judging whether the residual length is in the length value range;
if the residual length is within the length value range, taking the finished product roll with the residual length as the last finished product small roll; wherein n is an integer greater than or equal to 1.
In the above solution, if the length of the standard roll is not within the length value range of the finished small roll, the method includes:
determining the number of split rolls based on the length of the finished roll, the minimum length of the finished small roll and the maximum length of the finished small roll;
and averagely dividing the finished product roll according to the number of the divided rolls and the length of the finished product roll.
The invention also provides a steel coil splitting device, which comprises:
the determining unit is used for determining the length of the standard roll according to the preset weight of the standard roll, and the weight of the standard roll is 12-12.5 t;
the acquisition unit is used for acquiring the maximum weight and the minimum weight of the finished small rolls in the target order; determining the maximum length of the finished small rolls according to the weight of the finished rolls in unit length and the maximum weight of the finished small rolls, and determining the minimum length of the finished small rolls according to the weight of the finished rolls in unit length and the minimum weight of the finished small rolls;
and the coiling unit is used for judging whether the length of the standard coil is in a length value range between the maximum length and the minimum length of the finished small coil, and if the weight of the standard coil is in the weight value range of the finished small coil, coiling the finished coil according to the length of the standard coil.
In the foregoing solution, the determining unit is specifically configured to:
determining the length p _ work of the standard volume according to a formula p _ work, pmul _ std ═ p _ PLANT, STD _ w [ (1/p _ EMU, EMU _ sw _ pd) ] p _ work, ELONG _ f _ total; wherein the content of the first and second substances,
the p _ PLANT.STD _ w is the weight of the standard roll, the p _ EMU.EMU _ sw _ pd is the weight of the unit length of the standard roll, and the p _ WORK.ELONG _ f _ total is the elongation coefficient of the finished roll.
In the foregoing solution, the volume dividing unit is specifically configured to:
performing standard bundling on the finished product roll for n times based on the length of the standard roll to obtain n standard rolls;
obtaining the residual length of the finished product roll after the roll division for n times, and judging whether the residual length is in the length value range;
if the residual length is within the length value range, taking the finished product roll with the residual length as the last finished product small roll; wherein n is an integer greater than or equal to 1.
In the foregoing solution, the volume dividing unit is further configured to:
when the length of the standard roll is not in the length value range of the finished small roll, determining the number of split rolls based on the length of the finished small roll, the minimum length of the finished small roll and the maximum length of the finished small roll;
and averagely dividing the finished product roll according to the number of the divided rolls and the length of the finished product roll.
The embodiment of the invention provides a steel coil splitting method and a steel coil splitting device, wherein the method comprises the following steps: determining the length of the standard roll according to the preset weight of the standard roll, wherein the weight of the standard roll is 12-12.5 t; acquiring the maximum weight and the minimum weight of a finished product small roll in a target order; determining the maximum length of the finished small rolls according to the weight of the finished rolls in unit length and the maximum weight of the finished small rolls, and determining the minimum length of the finished small rolls according to the weight of the finished rolls in unit length and the minimum weight of the finished small rolls; judging whether the length of the standard roll is in a length value range between the maximum length and the minimum length of the finished small roll, and if the weight of the standard roll is in the weight value range of the finished small roll, dividing the finished small roll according to the length of the standard roll; therefore, according to the method and the device, the packaging price of more than 12 tons of steel is low from the standard price of the statistical packaging cost, and the packaging price of less than 12 tons of steel is high, so that the finished product rolls can be packaged according to the packaging price of more than 12 tons of steel after being evenly divided according to the standard rolls, and the packaging cost is further reduced.
Drawings
Fig. 1 is a schematic flow chart of a steel coil splitting method according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a steel coil splitting device according to a second embodiment of the present invention.
Detailed Description
The method aims to solve the technical problem that when the finished product roll is split in the prior art, the cost of the whole finished product roll packaging cost is too high due to the fact that the packaging cost of the finished product roll is very high. The invention provides a steel coil splitting method and a steel coil splitting device, wherein the method comprises the following steps: determining the length of the standard roll according to the preset weight of the standard roll, wherein the weight of the standard roll is 12-12.5 t; acquiring the maximum weight and the minimum weight of a finished product small roll in a target order; determining the maximum length of the finished small rolls according to the weight of the finished rolls in unit length and the maximum weight of the finished small rolls, and determining the minimum length of the finished small rolls according to the weight of the finished rolls in unit length and the minimum weight of the finished small rolls; and judging whether the length of the standard roll is in a length value range between the maximum length and the minimum length of the finished small roll, and if the length of the standard roll is in the length value range of the finished small roll, dividing the finished small roll according to the length of the standard roll.
The technical solution of the present invention is further described in detail by the accompanying drawings and the specific embodiments.
Example one
The embodiment provides a steel coil splitting method, as shown in fig. 1, the method includes:
s111, determining the length of the standard roll according to the preset weight of the standard roll, wherein the weight of the standard roll is 12 t;
the standard price of the statistical packaging cost shows that the cost of steel packaging of more than 12 tons is low, and the cost of steel packaging of less than 12 tons is high, so the core idea of the scheme is to cut the finished product roll by the weight of the standard roll. Firstly, the length of the standard roll needs to be determined according to the preset weight of the standard roll, the weight of the standard roll is 12-12.5 t, and in the practical operation process, the weight of the standard roll is 12.5t to avoid errors.
As an alternative embodiment, determining the length of the standard roll according to the preset weight of the standard roll includes:
determining the length of the standard roll according to equation (1):
p_WORK.PMU_l_std＝p_PLANT.STD_w*(1/p_EMU.EMU_sw_pd)*p_WORK.ELONG_f_total(1)
in the formula (1), p _ work.pmu _ l _ std is the length of a standard coil, p _ planet.std _ w is the weight of the standard coil, p _ emu.emu _ sw _ pd is the weight of the unit length of the standard coil, p _ work.elong _ f _ total is the elongation coefficient of a finished coil, and the elongation coefficient of the finished coil is the sum of the elongation of a finishing machine and the elongation of a tension leveler.
S112, acquiring the maximum weight and the minimum weight of a finished small roll in the target order, determining the maximum length of the finished small roll according to the weight of the finished small roll in unit length and the maximum weight of the finished small roll, and determining the minimum length of the finished small roll according to the weight of the finished small roll in unit length and the minimum weight of the finished small roll;
because the order requirements need to be met when the coil is split, the maximum weight and the minimum weight of the finished small coil in the target order need to be obtained.
The coil splitting system cuts according to the length of the strip steel during coil splitting, so that the weight needs to be converted into the length, and the method specifically comprises the following steps:
and determining the maximum length of the finished small roll according to the weight of the finished small roll per unit length and the maximum weight of the finished small roll, and determining the minimum length of the finished small roll according to the weight of the finished small roll per unit length and the minimum weight of the finished small roll. Thus, the length value range of the finished product small roll in the target order can be obtained, and the cut finished product small roll must meet the length range when the finished product roll is cut.
S113, judging whether the length of the standard roll is in a length value range between the maximum length and the minimum length of the finished small roll, and if the weight of the standard roll is in the weight value range of the finished small roll, dividing the finished small roll according to the length of the standard roll.
After the length value range is determined, when a fixed coil splitting strategy is carried out on the finished product coil, whether the length of the standard coil is in the length value range between the maximum length and the minimum length of the finished product small coil or not is judged, and if the length of the standard coil is in the length value range of the finished product small coil, the finished product coil is split according to the length of the standard coil.
Specifically, the step of dividing the finished rolls according to the length of the standard rolls comprises the following steps:
performing standard bundling on the finished product roll for n times based on the length of the standard roll to obtain n standard rolls;
obtaining the residual length of the finished product roll after the roll division for n times, and judging whether the residual length is in the length value range;
if the residual length is within the length value range, taking the finished product roll with the residual length as the last finished product small roll; wherein n is an integer greater than or equal to 1.
Here, depending on the actual production situation, the situation in which the remaining length is not within the length range generally does not occur. If the residual length is not in the length value range, the method belongs to wrong volume splitting logic.
In the actual splitting process, if the finished product roll is damaged or other factors influencing the quality are generated, the damaged section of strip steel is cut off and then split, so that the length of the finished product roll is reduced, in order to ensure the splitting precision, in the actual splitting process, after the finished product roll is subjected to standard splitting each time based on the length of the standard roll, whether the remaining length of the finished product roll is still within the length value range of the target order needs to be judged again, and if the remaining length of the finished product roll is within the length value range of the final finished product roll, the split length is performed by taking the finished product roll with the remaining length as the final finished product roll; if not, the segmentation mode is adjusted according to the specific n value.
It should be noted that the above-mentioned split-volume method is a split-volume policy making stage performed before splitting.
For example, if n is 1, the first time of splitting is performed according to the length of the standard volume, and 1 standard volume can be obtained. And then subtracting the length of 1 standard roll from the effective length of the finished roll to obtain the remaining length of the raw roll, and if the remaining length is within the length value range, taking the finished roll with the remaining length as the last finished small roll. The result is 1 standard volume and 1 ordinary volume. And finally, the finished product roll is cut according to the splitting strategy of 1 standard roll and 1 common roll.
For example, the residual length is 11m, the length value range is 10-14 m, and the finished product roll with the residual length is used as the last finished product small roll when the residual length is within the length value range.
If n is 2, the standard volume division is performed twice, and 2 standard volumes can be obtained. And then obtaining the residual length of the raw material roll, and if the residual length is within the length value range, taking the finished product roll with the residual length as the final finished product small roll. The result is 2 standard volumes and 1 normal volume. The finished product roll is finally split according to the splitting strategy of 2 standard rolls and 1 common roll.
And if the residual length is not within the length value range, reducing the number of the standard volumes, namely dividing into 1 standard volume. And then subtracting the length of 1 standard roll from the effective length of the finished product roll to obtain the remaining length of the raw material roll, judging whether the length of each common roll is within the length value range of the target order when the remaining length is divided into 2 common rolls, and if so, segmenting the finished product roll according to the splitting strategy of 1 standard roll and 2 common rolls.
If the length of each common roll is not in the length value range of the target order, determining the number of the split rolls directly based on the length of the finished roll, the maximum length and the minimum length of the finished small roll; and averagely dividing the finished product roll according to the number of the divided rolls and the length of the finished product roll.
Here, when n is another value, the formulation of the bundling policy is the same as the above formulation, except that the number of bundling is different, and will not be described herein again.
For the same reason, as an alternative embodiment, if the length of the standard roll is not within the length value range of the finished small roll, the method further includes:
determining the number of split rolls based on the length of the finished roll, the maximum length and the minimum length of the finished small roll;
and averagely dividing the finished product roll according to the number of the divided rolls and the length of the finished product roll.
That is, the finished rolls are split according to an average splitting mode.
For example, if the length range is 5-8 m and the length of the finished roll is 20m, the finished roll can be divided into 3 rolls according to the sharing mode, and the length of each roll is 6.67 m.
Example two
Based on the same inventive concept, the present embodiment provides a steel coil splitting device, as shown in fig. 2, the device includes: a determining unit 21, an acquiring unit 22, and a bundling unit 23; wherein the content of the first and second substances,
the standard price of the statistical packaging cost shows that the cost of steel packaging of more than 12 tons is low, and the cost of steel packaging of less than 12 tons is high, so the core idea of the scheme is to cut the finished product roll by the weight of the standard roll. The determining unit 21 first needs to determine the length of the standard roll according to a preset standard roll weight, where the standard roll weight is 12-12.5 t, and in the present embodiment, in order to avoid errors, the standard roll weight is 12.5 t.
Specifically, the determination unit 21 is configured to:
determining the length of the standard roll according to equation (1):
p_WORK.PMU_l_std＝p_PLANT.STD_w*(1/p_EMU.EMU_sw_pd)*p_WORK.ELONG_f_total(1)
in the formula (1), p _ work.pmu _ l _ std is the length of a standard coil, p _ planet.std _ w is the weight of the standard coil, p _ emu.emu _ sw _ pd is the weight of the unit length of the standard coil, p _ work.elong _ f _ total is the elongation coefficient of a finished coil, and the elongation coefficient of the finished coil is the sum of the elongation of a finishing machine and the elongation of a tension leveler.
Since the order requirements need to be satisfied when performing the roll separation, the obtaining unit 22 needs to obtain the maximum weight and the minimum weight of the finished small roll in the target order.
The uncoiling system cuts the strip steel according to the length of the strip steel during uncoiling, so the obtaining unit 22 needs to convert the weight into the length, specifically:
and determining the maximum length of the finished small roll according to the weight of the finished small roll per unit length and the maximum weight of the finished small roll, and determining the minimum length of the finished small roll according to the weight of the finished small roll per unit length and the minimum weight of the finished small roll. Thus, the length value range of the finished product small roll in the target order can be obtained, and the cut finished product small roll must meet the length range when the finished product roll is cut.
After the length value range is determined, when a fixed coil splitting strategy is performed on the finished product coil, the coil splitting unit 23 is configured to determine whether the length of the standard coil is within the length value range between the maximum length and the minimum length of the finished product coil, and if the length of the standard coil is within the length value range of the finished product coil, perform coil splitting on the finished product coil according to the length of the standard coil.
Specifically, the step of dividing the finished rolls according to the length of the standard rolls comprises the following steps:
performing standard bundling on the finished product roll for n times based on the length of the standard roll to obtain n standard rolls;
obtaining the residual length of the finished product roll after the roll division for n times, and judging whether the residual length is in the length value range;
if the residual length is within the length value range, taking the finished product roll with the residual length as the last finished product small roll; wherein n is an integer greater than or equal to 1.
Here, depending on the actual production situation, the situation in which the remaining length is not within the length range generally does not occur. If the residual length is not in the length value range, the method belongs to wrong volume splitting logic.
In the actual splitting process, if the finished product roll is damaged or other factors influencing the quality are generated, the damaged section of strip steel is cut off and then split, so that the length of the finished product roll is reduced, in order to ensure the splitting precision, in the actual splitting process, after the finished product roll is subjected to standard splitting each time based on the length of the standard roll, whether the remaining length of the finished product roll is still within the length value range of the target order needs to be judged again, and if the remaining length of the finished product roll is within the length value range of the final finished product roll, the split length is performed by taking the finished product roll with the remaining length as the final finished product roll; if not, the segmentation mode is adjusted according to the specific n value.
It should be noted that the above-mentioned split-volume method is a split-volume policy making stage performed before splitting.
For example, if n is 1, the first time of splitting is performed according to the length of the standard volume, and 1 standard volume can be obtained. And then subtracting the length of 1 standard roll from the effective length of the finished roll to obtain the remaining length of the raw roll, and if the remaining length is within the length value range, taking the finished roll with the remaining length as the last finished small roll. The result is 1 standard volume and 1 ordinary volume. And finally, the finished product roll is cut according to the splitting strategy of 1 standard roll and 1 common roll.
For example, the residual length is 11m, the length value range is 10-14 m, and the finished product roll with the residual length is used as the last finished product small roll when the residual length is within the length value range.
If n is 2, the standard volume division is performed twice, and 2 standard volumes can be obtained. And then obtaining the residual length of the raw material roll, and if the residual length is within the length value range, taking the finished product roll with the residual length as the final finished product small roll. The result is 2 standard volumes and 1 normal volume. The finished product roll is finally split according to the splitting strategy of 2 standard rolls and 1 common roll.
And if the residual length is not within the length value range, reducing the number of the standard volumes, namely dividing into 1 standard volume. And then subtracting the length of 1 standard roll from the effective length of the finished product roll to obtain the remaining length of the raw material roll, judging whether the length of each common roll is within the length value range of the target order when the remaining length is divided into 2 common rolls, and if so, segmenting the finished product roll according to the splitting strategy of 1 standard roll and 2 common rolls.
If the length of each common roll is not within the length value range of the target order, the roll dividing unit 23 determines the number of the rolls to be divided directly based on the length of the finished roll, the maximum length and the minimum length of the finished small roll; and averagely dividing the finished product roll according to the number of the divided rolls and the length of the finished product roll.
Here, when n is another value, the formulation of the bundling policy is the same as the above formulation, except that the number of bundling is different, and will not be described herein again.
For the same reason, as an alternative embodiment, if the length of the standard roll is not within the length range of the finished small roll, the roll splitting unit 23 is further configured to:
determining the number of split rolls based on the length of the finished roll, the maximum length and the minimum length of the finished small roll;
and averagely dividing the finished product roll according to the number of the divided rolls and the length of the finished product roll.
That is, the finished rolls are split according to an average splitting mode.
For example, if the length range is 5-8 m and the length of the finished roll is 20m, the finished roll can be divided into 3 rolls according to the sharing mode, and the length of each roll is 6.67 m.
The steel coil splitting method and the steel coil splitting device provided by the embodiment of the invention have the following beneficial effects that:
the embodiment of the invention provides a steel coil splitting method and a steel coil splitting device, wherein the method comprises the following steps: determining the length of the standard roll according to the preset weight of the standard roll, wherein the weight of the standard roll is 12-2.5 t; acquiring the maximum weight and the minimum weight of a finished product small roll in a target order; determining the maximum length of the finished small rolls according to the weight of the finished rolls in unit length and the maximum weight of the finished small rolls, and determining the minimum length of the finished small rolls according to the weight of the finished rolls in unit length and the minimum weight of the finished small rolls; judging whether the length of the standard roll is in a length value range between the maximum length and the minimum length of the finished small roll, and if the weight of the standard roll is in the weight value range of the finished small roll, dividing the finished small roll according to the length of the standard roll; therefore, according to the method and the device, the packaging price of more than 12 tons of steel is low from the standard price of the statistical packaging cost, and the packaging price of less than 12 tons of steel is high, so that the finished product rolls can be packaged according to the packaging price of more than 12 tons of steel after being evenly divided according to the standard rolls, and the packaging cost is further reduced.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (8)
1. A method for separating a steel coil, the method comprising:
determining the length of the standard roll according to the preset weight of the standard roll, wherein the weight of the standard roll is 12-12.5 t;
acquiring the maximum weight and the minimum weight of a finished product small roll in a target order;
determining the maximum length of the finished small rolls according to the weight of the finished rolls in unit length and the maximum weight of the finished small rolls, and determining the minimum length of the finished small rolls according to the weight of the finished rolls in unit length and the minimum weight of the finished small rolls;
and judging whether the length of the standard roll is in a length value range between the maximum length and the minimum length of the finished small roll, and if the length of the standard roll is in the length value range of the finished small roll, dividing the finished small roll according to the length of the standard roll.
2. The method of claim 1, wherein determining the length of the standard roll based on a preset standard roll weight comprises:
determining the length p _ work of the standard volume according to a formula p _ work, pmul _ std ═ p _ PLANT, STD _ w [ (1/p _ EMU, EMU _ sw _ pd) ] p _ work, ELONG _ f _ total; wherein the content of the first and second substances,
the p _ PLANT.STD _ w is the weight of the standard roll, the p _ EMU.EMU _ sw _ pd is the weight of the unit length of the standard roll, and the p _ WORK.ELONG _ f _ total is the elongation coefficient of the finished roll.
3. The method of claim 1, wherein said separating said finished rolls according to the length of said standard rolls comprises:
performing standard bundling on the finished product roll for n times based on the length of the standard roll to obtain n standard rolls;
obtaining the residual length of the finished product roll after the roll division for n times, and judging whether the residual length is in the length value range;
if the residual length is within the length value range, taking the finished product roll with the residual length as the last finished product small roll; wherein n is an integer greater than or equal to 1.
4. The method of claim 1, wherein if the length of the standard roll is not within the length value range of the finished small roll, the method comprises:
determining the number of split rolls based on the length of the finished roll, the minimum length of the finished small roll and the maximum length of the finished small roll;
and averagely dividing the finished product roll according to the number of the divided rolls and the length of the finished product roll.
5. A steel coil splitting apparatus, comprising:
the determining unit is used for determining the length of the standard roll according to the preset weight of the standard roll, and the weight of the standard roll is 12-12.5 t;
the acquisition unit is used for acquiring the maximum weight and the minimum weight of the finished small rolls in the target order; determining the maximum length of the finished small rolls according to the weight of the finished rolls in unit length and the maximum weight of the finished small rolls, and determining the minimum length of the finished small rolls according to the weight of the finished rolls in unit length and the minimum weight of the finished small rolls;
and the coiling unit is used for judging whether the length of the standard coil is in a length value range between the maximum length and the minimum length of the finished small coil, and if the weight of the standard coil is in the weight value range of the finished small coil, coiling the finished coil according to the length of the standard coil.
6. The apparatus of claim 5, wherein the determination unit is specifically configured to:
determining the length p _ work of the standard volume according to a formula p _ work, pmul _ std ═ p _ PLANT, STD _ w [ (1/p _ EMU, EMU _ sw _ pd) ] p _ work, ELONG _ f _ total; wherein the content of the first and second substances,
the p _ PLANT.STD _ w is the weight of the standard roll, the p _ EMU.EMU _ sw _ pd is the weight of the unit length of the standard roll, and the p _ WORK.ELONG _ f _ total is the elongation coefficient of the finished roll.
7. The apparatus of claim 5, wherein the volume splitting unit is specifically configured to:
performing standard bundling on the finished product roll for n times based on the length of the standard roll to obtain n standard rolls;
obtaining the residual length of the finished product roll after the roll division for n times, and judging whether the residual length is in the length value range;
if the residual length is within the length value range, taking the finished product roll with the residual length as the last finished product small roll; wherein n is an integer greater than or equal to 1.
8. The apparatus of claim 5, wherein the volume splitting unit is further to:
when the length of the standard roll is not in the length value range of the finished small roll, determining the number of split rolls based on the length of the finished small roll, the minimum length of the finished small roll and the maximum length of the finished small roll;
and averagely dividing the finished product roll according to the number of the divided rolls and the length of the finished product roll.
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| CN201911025295.7A CN110842052B (en) | 2019-10-25 | 2019-10-25 | Steel coil splitting method and device |
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| CN201911025295.7A CN110842052B (en) | 2019-10-25 | 2019-10-25 | Steel coil splitting method and device |
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