CN105404742A - Steel strip weight based hot-dip galvanized finished product coil shearing optimization method - Google Patents
Steel strip weight based hot-dip galvanized finished product coil shearing optimization method Download PDFInfo
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Abstract
A steel strip weight based hot-dip galvanized finished product coil shearing optimization method belongs to the technical field of hot-dip galvanization production control. An optimization setting calculation process is added to a steel strip shearing setting module to perform optimization calculation on a shearing set value. The steel strip weight based hot-dip galvanized finished product coil shearing optimization method has the advantages that in the process of carrying out shearing setting, via determining the status of a welding seam of a steel strip in a production line and considering a coating weight, calculation is carried out to obtain the steel strip weight for calculating shearing optimization setting; and then finished product coil shearing optimization setting calculation is performed according to a finished product coil shearing target, a shearing setting parameter is determined, and correction of a sheared position is further performed by combining a distance between the sheared position and the position of the welding seam, so that the yield of the steel strip is improved.
Description
Technical field:
The invention belongs to galvanizing production control technology field, particularly a kind of galvanizing finished product volume Shearing Optimization method based on band steel weight.
Background technology
Galvanizing produce be by rust cleaning after band steel immerse in the zinc liquid melted, make belt steel surface adhere to zinc layers, thus play corrosion-resistant object, be a kind of effective anti-corrosion of metal mode, be mainly used on the metal construction facility of every profession and trade.It is continuous print production run that galvanizing is produced, and to be welded into by the band steel of rolling integrally to produce at the head of production line by welding machine.Outlet band steel completes coating, aligning, after a series of production run such as passivation, completes rolling batch by coiling machine, needs to carry out the shearing of finished product volume according to the requirement of production technology and contract after batching, and completes the production of coil of strip.
Usually by weight or fixed length carry out finished product volume shear time, reckon without the integral status with steel in production run, just simply meet the shearing requirement of finished product volume, band steel shearing setting may be caused thus unreasonable, can not effectively utilize band steel, cause the waste of band steel, reduce the lumber recovery of product.In order to improve the lumber recovery of band steel when finished product volume is sheared, need to carry out band steel Shearing Optimization setup algorithm when being with steel rolling to shear.And the quantity of weld seam in finished product volume is controlled according to technique and contract requirement (CR), shear with coil of strip weight co-controlling and set.
Summary of the invention
The object of the invention is to provide a kind of galvanizing finished product volume Shearing Optimization method based on band steel weight, shear in setting in original control system and increase Optimal Setting computation process, as shown in Figure 1, realize the Optimal Setting that band steel finished product volume is sheared, improve the lumber recovery of product.And the quantity of weld seam in finished product volume is controlled according to technique and contract requirement (CR), shear with coil of strip weight co-controlling and set.
Optimizing shear process computation step:
Step one, setup algorithm process trigger: setup algorithm process is triggered by basic automatization (L1) system signal, trigger setup algorithm process when strip steel head or weld seam enter finished product volume from outlet area;
Step 2, weld information are determined:
When production line there is no weld seam, terminate the determination carrying out weld information;
When production line existing weld seam, carry out weld information from outlet area to inlet region to each subregion to determine, record the weld seam quantity found, and determine whether weld seam is first weld seam found, calculate the strip length determining to cut front Article 1 weld seam from coiling machine to outlet;
According to the state of weld seam front and back band steel, determine whether weld seam is the weld seam being prohibited from entering finished product volume, if weld seam is the weld seam being prohibited from entering finished product volume, calculates the strip length of this position while welding, terminates weld seam deterministic process;
Step 3, calculating are used for the band steel weight of Shearing Optimization setup algorithm, and calculation process as shown in Figure 3.
According to the weld information that step 2 is determined, cut front Article 1 commissure strip length by coiling machine to outlet, and according to the weight being with the width of steel, thickness and density calculation to obtain this section strip steel;
According to the zinc-plated amount of coating of setting, calculate weight zinc-plated needed for this section strip steel, calculate thus and cut to outlet the weight that front Article 1 commissure completes zinc-plated rear band steel from coiling machine;
Required zinc-plated Weight computation formula is:
Weight
Zn＝W
steel×L
steel×(Coat
top+Coat
bottom)
In formula: Weight
zn-belt steel surface galvanizing layer weight;
W
steel-strip width;
L
steel-strip length;
Coat
topthe zinc-plated weight of-band steel upper surface unit area target;
Coat
bottomthe zinc-plated weight of-band steel lower surface unit area target;
Judge whether production line exists the weld seam being prohibited from entering finished product volume, if existed, the strip length of commissure is rolled up from coiling machine to being prohibited from entering finished product by what determine in step 2, calculate the weight of band steel, and calculate required galvanizing layer weight, calculate the band steel weight for Shearing Optimization setup algorithm process thus.Complete band steel Weight computation process;
When production line not existing the weld seam being prohibited from entering finished product volume, according to uncoiler used in producing, calculate zinc-plated when uncoiler completes production with steel after band steel weight, and increase a weld seam quantity.Continue the band steel judging the same production schedule in untapped uncoiler, coil of strip preraratory station and database, same size product, and calculated zinc-plated after can be used for the band steel general assembly (TW) of Shearing Optimization setup algorithm;
Step 4, Shearing Optimization setup algorithm process, calculation process as shown in Figure 4.
Band steel weight judges, when calculate in step 3 by coiling machine to the band steel weight that front Article 1 commissure is cut in outlet be less than finished product roll up minimum permission weight time, first judge to export and cut front weld seam whether as the weld seam be prohibited from entering in finished product volume, if weld seam is for being prohibited from entering finished product volume weld seam, shearing is set as in commissure, terminates to shear setting; If weld seam can enter finished product volume, continue to judge whether weld seam quantity reaches maximum allowable quantity, when weld seam quantity is greater than maximum allowable quantity, shears and be set in commissure, terminate to shear setting;
The band steel weight of front Article 1 commissure is cut when target finished product volume is heavily minimum weight and maximum weight by coiling machine to outlet when what calculate in step 3, judge that whether outlet cuts front weld seam as being prohibited from entering finished product volume weld seam, if, then shear and be set in commissure, shear setting and terminate; If weld seam is not the weld seam being prohibited from entering finished product volume, then continues to judge whether weld seam quantity equals finished product and roll up maximum permission weld seam number, if weld seam number reaches maximal value, then shear and be set in commissure, shear setting and terminate, otherwise continue;
The Shearing Optimization setup algorithm band steel weight cycle calculations that can be used for according to calculating in step 3 determines to be with steel weight can the volume number N of cutting, band steel weight average is made to be divided into N to roll up when there is N value, every coiled strip steel weight is between finished product volume minimum weight and maximum weight, shearing is set as shearing by weight, and every coiled strip steel weight is result of calculation;
If there is no N value makes volume when heavily meeting finished product rollback request, proceeds band steel weight and judges, if band steel weight be greater than finished product volume target volume heavy time, shear and be set as shearing by band steel weight, shearing weight is finished product volume target volume weight; If band steel weight is less than finished product volume target volume weight, then clipped position is set in outlet and cuts front commissure;
Continue to judge clipped position and position while welding after completing shearing setting, when the strip length between clipped position and position while welding is less than setting value, clipped position is modified in commissure, terminate shearing setting.
Complete the calculating of shear history setup parameter, setup parameter is issued to basic automation systems by process automation system.
The present invention is characterised in that:
1) in zinc-plated production shearing setting, increase Shearing Optimization setup algorithm process, reduce the waste causing band steel because shearing setting is unreasonable.According to band steel weight in shearing setup algorithm, with finished product volume, target volume is important asks as controlled condition carries out Shearing Optimization setting.
2) after completing Shearing Optimization setup algorithm, determine to shear the distance between desired location and position while welding, when the spacing shearing desired location and position while welding is less than setting value, clipped position is modified to commissure.
3) consider when calculating band steel weight the weld seam number that wherein exists, when weld seam count in the finished product volume reaching setting allow weld seam number time bundling article steel weight calculating, the control of weld seam quantity in finished product volume can be realized thus.
Beneficial effect of the present invention is: propose a kind of feasible zinc-plated volume Shearing Optimization setting calculating method that manufactures a finished product.When carrying out shearing setting, according to the weight of band steel, consider weld seam situation, Shearing Optimization setup algorithm is carried out in the requirement of combining target finished product volume, reasonably shearing setting value by optimizing to calculate to obtain, reducing owing to shearing the unreasonable waste causing product, improving product lumber recovery.And the quantity of weld seam in finished product volume is controlled according to technique and contract requirement (CR), shear with coil of strip weight co-controlling and set.
Accompanying drawing explanation
Fig. 1 is for shearing assignment procedure process flow diagram
Fig. 2 is production line function division schematic diagram, in figure, and 1-coil of strip preraratory station, 2-uncoiler, 3-entrance is cut, 4-welding machine, 5-entry loop, 6-cleaning device, 7-heating furnace, 8-cooling device, 9-zinc pot, 10-polishing machine, 11-straightener, 12-outlet looping, 13-oiling station, 14-outlet is cut, 15-coiling machine
Fig. 3 is band steel Weight computation process flow diagram
Fig. 4 is Optimal Setting computation process process flow diagram
Embodiment
The present invention increases Shearing Optimization setup algorithm process in conventional magnetic shear setting.When carrying out finished product volume and shearing setting, to consider in production the requirement such as heavily of finished product volume butt welded seam number, finished product volume volume, the optimization carrying out finished product volume shear history calculates, thus improves under the requirement meeting technique and contract and produce lumber recovery.
Shearing Optimization assignment procedure concrete steps are:
(1). setup algorithm process is triggered by basic automatization (L1) system signal, triggers setup algorithm process when strip steel head or weld seam enter finished product volume from outlet area;
(2). on production line, each subregion inside weld information is determined:
Judge weld seam state on production line, and determine that front Article 1 weld seam position is cut in outlet, and calculate from coiling machine to the length of this commissure band steel;
Judge whether production line exists the weld seam being prohibited from entering finished product volume, calculate from coiling machine to the length of this commissure band steel if existed.
(3). band steel Weight computation;
Calculate the weight of cutting front Article 1 position while welding band steel from coiling machine to outlet;
Calculate the band steel weight being used for Shearing Optimization setup algorithm.
(4). Shearing Optimization setup algorithm process;
With finished product volume, target volume is important asks as controlled condition, and cycle calculations obtains rational bundling quantity;
Determine to set the distance between clipped position and position while welding, when setting the distance between clipped position and position while welding and being less than setting value, clipped position is adjusted to commissure.
(5). complete the calculating of shear history setup parameter, setup parameter is issued to basic automatization (L1) system by process automation (L2) system.
Below for certain galvanization production line domestic, describe in detail and shear setting and Optimal Setting computation process.
In this example, production line is divided into inlet region, entry loop district, cleaning area, Reheating Furnace Zone, coating district, polishing district, stretcher leveling district, outlet looping district and the function division of 9, outlet area according to process function, as shown in Figure 2, be with steel as the process of uncoiler coil of strip before from uncoiler to inlet region, process as finished product volume to coiling machine band steel from after outlet area.
According to manufacturing technique requirent and customer requirement, using the weld seam be welded to form by the different production schedule or steel grade, band steel that specification is different in band steel as the weld seam process being prohibited from entering finished product and rolling up; From coiling machine progressively to production line inlet region statistics weld seam quantity, when weld seam sum is greater than the weld seam number allowed in finished product volume, this weld seam, as the weld seam process being prohibited from entering finished product volume, can realize the control to the weld seam quantity existed in finished product volume thus.Allow the weld seam quantity existed to set according to technique or customer requirement in finished product volume, setting in this example and allowing to there is weld seam quantity in finished product volume is 1.
This example Shearing Optimization assignment procedure concrete steps are:
(1). setup algorithm process triggers: setup algorithm process is triggered by basic automatization (L1) system signal, triggers setup algorithm process when strip steel head or weld seam enter finished product volume from outlet area;
(2). weld information is determined:
When production line there is no weld seam, terminate the determination carrying out weld information;
When production line existing weld seam, carry out weld information from outlet area to inlet region to each subregion to determine, record the weld seam quantity found, and determine whether weld seam is first weld seam found, calculate the strip length determining to cut front Article 1 weld seam from coiling machine to outlet;
According to the state of weld seam front and back band steel, determine whether weld seam is the weld seam being prohibited from entering finished product volume, if weld seam is the weld seam being prohibited from entering finished product volume, calculates the strip length of this position while welding, terminates weld seam deterministic process;
(3). calculate the band steel weight being used for Shearing Optimization setup algorithm, calculation process is as shown in Figure 3.
According to the weld information that step (2) is determined, cut front Article 1 commissure strip length by coiling machine to outlet, and according to the weight being with the width of steel, thickness and density calculation to obtain this section strip steel;
According to the zinc-plated amount of coating of setting, calculate weight zinc-plated needed for this section strip steel, calculate thus and cut to outlet the weight that front Article 1 commissure completes zinc-plated rear band steel from coiling machine;
Required zinc-plated Weight computation formula is:
Weight
Zn＝W
steel×L
steel×(Coat
top+Coat
bottom)
In formula: Weight
zn-belt steel surface galvanizing layer weight;
W
steel-strip width;
L
steel-strip length;
Coat
topthe zinc-plated weight of-band steel upper surface unit area target;
Coat
bottomthe zinc-plated weight of-band steel lower surface unit area target;
Judge whether production line exists the weld seam being prohibited from entering finished product volume, if existed, the strip length of commissure is rolled up from coiling machine to being prohibited from entering finished product by what determine in step (2), calculate the weight of band steel, and calculate required galvanizing layer weight, calculate the band steel weight for Shearing Optimization setup algorithm process thus.Complete band steel Weight computation process;
When production line not existing the weld seam being prohibited from entering finished product volume, according to uncoiler used in producing, calculate zinc-plated when uncoiler completes production with steel after band steel weight, and increase a weld seam quantity.Continue the band steel judging the same production schedule in untapped uncoiler, coil of strip preraratory station and database, same size product, and calculated zinc-plated after can be used for the band steel general assembly (TW) of Shearing Optimization setup algorithm;
(4). Shearing Optimization setup algorithm process, calculation process is as shown in Figure 4.
Band steel weight judges, when calculate in step 3 by coiling machine to the band steel weight that front Article 1 commissure is cut in outlet be less than finished product roll up minimum permission weight time, first judge to export and cut front weld seam whether as the weld seam be prohibited from entering in finished product volume, if weld seam is for being prohibited from entering finished product volume weld seam, shearing is set as in commissure, terminates to shear setting; If weld seam can enter finished product volume, continue to judge whether weld seam quantity reaches maximum allowable quantity, when weld seam quantity is greater than maximum allowable quantity, shears and be set in commissure, terminate to shear setting;
The band steel weight of front Article 1 commissure is cut when target finished product volume is heavily minimum weight and maximum weight by coiling machine to outlet when what calculate in step 3, judge that whether outlet cuts front weld seam as being prohibited from entering finished product volume weld seam, if, then shear and be set in commissure, shear setting and terminate; If weld seam is not the weld seam being prohibited from entering finished product volume, then continues to judge whether weld seam quantity equals finished product and roll up maximum permission weld seam number, if weld seam number reaches maximal value, then shear and be set in commissure, shear setting and terminate, otherwise continue;
The Shearing Optimization setup algorithm band steel weight cycle calculations that can be used for according to calculating in step 3 determines to be with steel weight can the volume number N of cutting, band steel weight average is made to be divided into N to roll up when there is N value, every coiled strip steel weight is between finished product volume minimum weight and maximum weight, shearing is set as shearing by weight, and every coiled strip steel weight is result of calculation;
If there is no N value makes volume when heavily meeting finished product rollback request, proceeds band steel weight and judges, if band steel weight be greater than finished product volume target volume heavy time, shear and be set as shearing by band steel weight, shearing weight is finished product volume target volume weight; If band steel weight is less than finished product volume target volume weight, then clipped position is set in outlet and cuts front commissure;
Continue to judge clipped position and position while welding after completing shearing setting, when the strip length between clipped position and position while welding is less than outlet area length, clipped position is modified in commissure, terminate shearing setting.
(5). complete the calculating of shear history setup parameter, setup parameter is issued to basic automatization (L1) system by process automation (L2) system.
Adopt above step can realize shearing the optimization of setting value.Be with steel basic parameter as follows in example:
Band steel dimensions is: thickness 1.0mm, width 1200mm; Have 10 coiled strip steels to produce, coil of strip weight is as table 1.
Table 1
| Coil of strip is numbered | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Coil of strip weight/10 3Kg | 21.5 | 19.8 | 20.4 | 19.7 | 18.9 | 23.3 | 22.6 | 21.2 | 20.5 | 21.8 |
Band steel double side zinc coating amount is 200g/m
2, target finished product volume volume is heavily: 20 × 10
3kg, the heavy minimum value of finished product volume volume: 18 × 10
3kg, the heavy maximal value of finished product volume volume: 22 × 10
3kg.
Setting result is sheared as table 2 when adopting Shearing Optimization setup algorithm.
Table 2
| Coil of strip is numbered | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Coil of strip weight/10 3Kg | 20.9 | 20.9 | 20.9 | 20.77 | 20.9 | 20.3 | 20.9 | 20.9 | 20.9 | 21.0 |
When not carrying out Shearing Optimization setup algorithm, shear history is pressed finished product volume target volume and is weighed 20 × 10
3kg carries out shearing setting, and this shears setting can in the end occur 9197Kg tailing, causes the waste of band steel.
When carrying out Shearing Optimization setup algorithm, then only there will be 810Kg tailing.Adopt Shearing Optimization setup algorithm can reduce the waste of being with steel to cause due to shear history as can be seen here.
Claims (1)
1., based on a galvanizing finished product volume Shearing Optimization method for band steel weight, it is characterized in that:
Step one, setup algorithm process trigger: setup algorithm process is triggered by basic automation systems signal, trigger setup algorithm process when strip steel head or weld seam enter finished product volume from outlet area;
Step 2, weld information are determined:
When production line there is no weld seam, terminate the determination carrying out weld information;
When production line existing weld seam, carry out weld information from outlet area to inlet region to each subregion to determine, record the weld seam quantity found, and determine whether weld seam is first weld seam found, calculate the strip length determining to cut front Article 1 weld seam from coiling machine to outlet;
According to the state of weld seam front and back band steel, determine whether weld seam is the weld seam being prohibited from entering finished product volume, if weld seam is the weld seam being prohibited from entering finished product volume, calculates the strip length of this position while welding, terminates weld seam deterministic process;
Step 3, calculating are used for the band steel weight of Shearing Optimization setup algorithm: the weld information determined according to step 2, front Article 1 commissure strip length is cut to outlet by coiling machine, and according to the weight being with the width of steel, thickness and density calculation to obtain this section strip steel;
According to the zinc-plated amount of coating of setting, calculate weight zinc-plated needed for this section strip steel, calculate thus and cut to outlet the weight that front Article 1 commissure completes zinc-plated rear band steel from coiling machine;
Required zinc-plated Weight computation formula is:
Weight
Zn＝W
steel×L
steel×(Coat
top+Coat
bottom)
In formula: Weight
zn-belt steel surface galvanizing layer weight;
W
steel-strip width;
L
steel-strip length;
Coat
topthe zinc-plated weight of-band steel upper surface unit area target;
Coat
bottomthe zinc-plated weight of-band steel lower surface unit area target;
Judge whether production line exists the weld seam being prohibited from entering finished product volume, if existed, the strip length of commissure is rolled up from coiling machine to being prohibited from entering finished product by what determine in step 2, calculate the weight of band steel, and calculate required galvanizing layer weight, calculate the band steel weight for Shearing Optimization setup algorithm process thus;
When production line not existing the weld seam being prohibited from entering finished product volume, according to uncoiler used in producing, calculate zinc-plated when uncoiler completes production with steel after band steel weight, and increase a weld seam quantity; Continue the band steel judging the same production schedule in untapped uncoiler, coil of strip preraratory station and database, same size product, and calculated zinc-plated after can be used for the band steel general assembly (TW) of Shearing Optimization setup algorithm;
Step 4, Shearing Optimization setup algorithm process:
Band steel weight judges, when calculate in step 3 by coiling machine to the band steel weight that front Article 1 commissure is cut in outlet be less than finished product roll up minimum permission weight time, first judge to export and cut front weld seam whether as the weld seam be prohibited from entering in finished product volume, if weld seam is for being prohibited from entering finished product volume weld seam, shearing is set as in commissure, terminates to shear setting; If weld seam can enter finished product volume, continue to judge whether weld seam quantity reaches maximum allowable quantity, when weld seam quantity is greater than maximum allowable quantity, shears and be set in commissure, terminate to shear setting;
The band steel weight of front Article 1 commissure is cut when target finished product volume is heavily minimum weight and maximum weight by coiling machine to outlet when what calculate in step 3, judge that whether outlet cuts front weld seam as being prohibited from entering finished product volume weld seam, if, then shear and be set in commissure, shear setting and terminate; If weld seam is not the weld seam being prohibited from entering finished product volume, then continues to judge whether weld seam quantity equals finished product and roll up maximum permission weld seam number, if weld seam number reaches maximal value, then shear and be set in commissure, shear setting and terminate, otherwise continue;
The Shearing Optimization setup algorithm band steel weight cycle calculations that can be used for according to calculating in step 3 determines to be with steel weight can the volume number N of cutting, band steel weight average is made to be divided into N to roll up when there is N value, every coiled strip steel weight is between finished product volume minimum weight and maximum weight, shearing is set as shearing by weight, and every coiled strip steel weight is result of calculation;
If there is no N value makes volume when heavily meeting finished product rollback request, proceeds band steel weight and judges, if band steel weight be greater than finished product volume target volume heavy time, shear and be set as shearing by band steel weight, shearing weight is finished product volume target volume weight; If band steel weight is less than finished product volume target volume weight, then clipped position is set in outlet and cuts front commissure;
Continue to judge clipped position and position while welding after completing shearing setting, when the strip length between clipped position and position while welding is less than setting value, clipped position is modified in commissure, terminate shearing setting;
Complete the calculating of shear history setup parameter, setup parameter is issued to basic automation systems by process automation system.
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