CN102632388A - Leading tape welding production line applicable to single rack rolling mill and method - Google Patents
Leading tape welding production line applicable to single rack rolling mill and method Download PDFInfo
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- CN102632388A CN102632388A CN2012101326998A CN201210132699A CN102632388A CN 102632388 A CN102632388 A CN 102632388A CN 2012101326998 A CN2012101326998 A CN 2012101326998A CN 201210132699 A CN201210132699 A CN 201210132699A CN 102632388 A CN102632388 A CN 102632388A
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Abstract
The invention provides a leading tape welding production line applicable to a single rack rolling mill and a method. The leading tape welding assembly line is sequentially provided with a first uncoiling machine, a first pair of scissors, a second uncoiling machine, a second pair of scissors, a welding machine, a sensing heater, a third pair of scissors and a recoiling machine. According to the leading tape welding assembly line provided by the invention, the equipment, such as the uncoiling machines, the welding machine, the scissors, the recoiling machine and the like, can be reasonably configured, so that feeding belt steel and a steel coil with an abnormal quality in an after-process can be recoiled and repeatedly welded. The leading tape welding assembly line has a face turning function and indirectly improves a pass percent of a product. By carrying out the leading tape welding method applicable to the single rack rolling mill provided by the invention, the steel roll is subjected to inner-outer ring leading tap welding before milling, so that the product pass percent of the single rack rolling mill is improved, the production stability and the single rack production energy can be improved, and the cost is reduced.
Description
Technical field
The present invention relates to be with the steel production method, particularly a kind of leader tape welding production line and method that is applicable to singlestandmill.
Background technology
Single chassis reversable mill (comprising different arrangement forms such as 4 rollers, 6 rollers and 20 rollers) is owing to have characteristics such as housing rigidity is big, minimum rolled thickness is little, plate shape control ability is strong; Be particularly suitable for high strength, the production of specification band steel as thin as a wafer, can be used for high-grade steel grade fields such as special steel, stainless steel, silicon steel.
Singlestandmill adopts the discontinuous mode of production, for setting up tension force, needs in the gateway coiling machine writhing number astragal steel, adds the intrinsic distance between the coiling machine of gateway, causes about 20-30m stock roll can't be rolling, has had a strong impact on the milling train lumber recovery.For improving the milling train lumber recovery, need before coil of strip rolls, carry out necessary coil of strip and prepare, than method in common the loss of avoiding not rolling the part certified products in the mode of band steel toe tail welding certain-length leader tape.
Chinese patent 20081009726.4 discloses " a kind of process that improves product rate of reversible cold-rolled steel strip "; This method increases drive roller saddle and shearing and welding equipment in annealing and pickling unit gateway;, coil of strip takes the lead leader tape before getting into the annealing and pickling unit for coil of strip welds; Through the annealing and pickling unit and after unloading volume, be coil of strip magnetic tape trailer welding magnetic tape trailer leader tape at coil of strip.
Adopt this mode; At first need increase annealing and pickling unit gateway power saddle and shearing and welding equipment; Increase equipment investment and on the unit of going into operation, be difficult to installation space, and the annealed pickling unit of leader tape, because material is different; Cause the furnace atmosphere fluctuation easily, and have the bad risk that causes broken belt in the stove of weldquality.
Chinese patent 200710061655.X discloses " a kind of method of stainless-steel roll welding band-leading ", and this method is utilized simple and easy preparation unit at annealing and pickling unit afterbody welding coil of strip inner ring leader tape after coil of strip unloads volume, welding coil of strip outer ring leader tape.
This method needs to increase welding machine and leader tape jig position at annealing and pickling unit afterbody, and the equipment that on the unit of going into operation, is difficult to carry out is installed, and the leader tape weld length receives the unit spatial constraints.And needing newly-increased simple and easy preparation unit, difficulty is all compared in the making of leader tape and transportation, influences unit and produces continuously.
Chinese patent 200880112355.2 discloses " welder for rolling facility, rolling equipment and milling method "; This method is arranged welding machine between single chassis reversable mill body and left side coiling machine, at band steel taping head welding band-leading, it is rolling to begin first passage before rolling; When coil of strip unloads volume; Use cutter that leader tape is cut off by the commissure, the certified products volume unloads volume, and leader tape winds off and begins to carry out next volume welding.
Use this method, need to increase milling train outlet welding machine, and can only weld the outlet leader tape, the inlet leader tape can't weld, and under the existing equipment condition, is difficult to install, and welding band-leading need take the Rolling Production time, influences production capacity.
In addition, because the part steel grade has black brittleness, brittle transition temperature is low, as easy as rolling off a log generation brittle fracture, and typical in silicon steel product, need carry out preheating before cold rolling, are heated to after the uniform temperature rolling.And modes such as heating is often adopted bell furnace, added thermal pit, water-bath heating have inefficiency, poor temperature uniformity, the bad shortcoming of surface quality.
From current production prior art with delivered patent, also do not have at present a kind of perfect merge silicon steel produce the leader tape welding and roll before the method for preheating demand.To these two kinds of demands, two kinds of functions of preheating before the invention property ground merges the leader tape welding machine and rolls, it is high to have proposed a kind of production efficiency, strong and high welding band-leading continuous production method and the component devices of lumber recovery of stability.
Summary of the invention
The objective of the invention is to propose a kind of leader tape welding production line and method that is applicable to singlestandmill, realize the taking the lead of parent roll, tail welding band-leading, reach the purpose that improves lumber recovery, reduces cost.
For achieving the above object, technical scheme of the present invention is:
A kind of leader tape welding production line that is applicable to singlestandmill is characterized in that, first uncoiler of arranging successively, first pair are cut and cut, second uncoiler, second pair are cut and cut, welding machine, induction heater, the 3rd pair are cut and cut and coiling machine.
Further, also be provided with two straighteners behind described first, second uncoiler respectively, can correct the template of band steel.
Crescent moon of layout is cut behind the described welding machine, the leader tape after the welding is accomplished dug the limit processing.
Again, production line of the present invention has also disposed the jockey pulley that a cover is guaranteed tension stability.
Described heater is gas heater, storage heater, electric heater or induction heater.
A kind of leader tape welding production method that is applicable to singlestandmill of the present invention, it comprises the steps:
1) leader tape is rolled up A and go up volume, take the lead behind the aligning the bad place of template to be sheared the back uncoiling to coiling machine, realize reducing the coil of strip internal diameter to second uncoiler;
2) certified products volume B goes up volume to second uncoiler; The bad part in outer ring is sheared in uncoiling, and leader tape volume A batches to the magnetic tape trailer whipping and stops to the welding machine place, and take the lead equally to welding machine certified products volume B uncoiling outer ring; Accomplish and the welding of leader tape volume A magnetic tape trailer; Magnetic tape trailer leader tape length L (L is that certified products is rolled up welding band-leading length end to end), after the welding, butt welded seam digs the limit and handles;
3) leader tape volume A in the exit the 3rd pair cut and cut shearing;
4) leader tape volume A unloads volume, and handling to the first uncoiler is also accomplished and gone up volume, and the heater input heats on two surfaces up and down the band steel; Certified products volume B continues uncoiling, and the magnetic tape trailer whipping is to the welding machine place, and certified products volume C goes up volume to first uncoiler;
5) leader tape volume A takes the lead the aligning back to welding machine, accomplishes the welding of certified products volume B magnetic tape trailer, and after the welding, butt welded seam digs the limit and handles;
6) behind the certified products volume B magnetic tape trailer welding band-leading, weld seam continues to wear band toward the coiling machine direction, and wearing strip length is 2L, and cut to cut by second pair leader tape volume A is sheared this moment, shears back leader tape volume A rollback to the first and pair cuts and to cut the position;
7) certified products volume C is by the second uncoiler uncoiling, after taking the lead to shear, takes the lead to rest on the welding machine place, accomplishes with the step 6) leader tape and takes the lead the leader tape welding, and continue to batch;
8) according to the requirement of welding band-leading length L, cut the place of cutting at the 3rd pair leader tape 2L is carried out the centre shearing, accomplish certified products volume B magnetic tape trailer simultaneously and separate with the leader tape that certified products volume C takes the lead;
9) certified products volume B unloads volume, and back one certified products volume C batches;
10) certified products volume C magnetic tape trailer is shut down to the welding machine position, and certified products volume D goes up volume, and according to said sequence, and that carries out follow-up certified products volume takes the lead the welding of tail leader tape;
11) certified products volume C unloads volume, unloads volume, weighs, bundling, and handling to singlestandmill is rolled.
Again, laser weld is adopted in described welding, or adopts the welding manner that fills silk or do not fill silk, or selects the welding manner of argon arc welding.
In addition; Described heating means adopt coal gas heating, hot blast heating, electrical heating or induction heating mode, and band steel upper and lower surfaces is rapidly heated and is incubated, and according to being with the different speed of service of steel; Can carry out adjustment, realize that the plate surface temperature is even.
The material of described leader tape volume is identical with the certified products volume, or selects for use and the different carbon steel sheet of certified products parent roll material.
In whole leader tape welding method:
Leader tape welding unit among the present invention comprises two uncoilers, and wherein a uncoiler is placed the leader tape volume, and an other uncoiler is placed the certified products volume, accomplishes its uncoiling function respectively;
Two cut cut be arranged in behind two uncoilers and coiling machine before, accomplish the shearing that the certified products winding reaches the leader tape volume end to end.
Leader tape welding unit and the shared uncoiler of singlestandmill among the present invention are to accomplish centre or the final uncoiling that leader tape is rolled up or certified products is rolled up and to batch.
The present invention rolls preceding welding band-leading method with existing band steel and compares, and has tangible beneficial effect:
1. improve the lumber recovery of cold rolling coil
At the head of certified products coil of strip, the leader tape of tail welding the preceding paragraph length, the certified products that this leader tape replaces in the normal operation of rolling, excising is rolled up, and uses leader tape welding unit can guarantee coil of strip 100% welding band-leading, improves the singlestandmill lumber recovery in this way.
2. improve cold rolling production efficiency and logistics flexibility
One is adopted the leader tape welding method that is applicable to the single chassis reversable mill of the present invention can be some the singlestandmills volume of supplying raw materials, and production logistics is fast, and the organization of production flexibility is strong.In addition, can arrive in the singlestandmill behind the welding band-leading and directly be rolled, enhance productivity.
3. to the high degree of adaptability of different supplied materials specifications
Because the supplied materials specification of different material is different, therefore, the specification of needed welding band-leading has different requirement, adopts leader tape welding method of the present invention and equipment, can switch fast different supplied materials specifications, has high degree of adaptability.
4. improve the rolled adaptability of cold-strip steel
The present invention heats band steel upper and lower surfaces, the method for eddy-current heating particularly, and the rate of heat addition is adjustable, and heating rate is fast, and the belt steel surface homogeneous heating satisfies the rolling adaptability of back operation.In addition, adopt this mode of heating, than the traditional water bath heating means, belt steel surface does not have defective generations such as mottling.
5. realize functions such as assembly volume, turn-over to the band steel
The present invention has realized the coil of strip of incoming band steel and back operation anomalous mass is pieced together volume through the reasonable disposition to equipment such as uncoiler, welding machine, scissors and coiling machines, and welding possesses surface-turning function again, has improved the lumber recovery of product indirectly.
Through the enforcement that is applicable to the welding band-leading method and apparatus of single chassis reversable mill of the present invention; Realized the coil of strip before rolling is carried out the welding of Internal and external cycle leader tape; And then reach the product lumber recovery that improves singlestandmill, improve production stability and single chassis production capacity, the purpose that reduces cost.
Description of drawings
Fig. 1 is the layout drawing of welding band-leading continuously acting production lines of the present invention.
Fig. 2 rolls up sketch map on the embodiment of the invention leader tape.
Fig. 3 is that embodiment of the invention leader tape winds off, welds sketch map.
Fig. 4 is that embodiment of the invention magnetic tape trailer leader tape is sheared sketch map.
Fig. 5 is that embodiment of the invention leader tape volume, certified products wind off the volume sketch map.
Fig. 6 is that embodiment of the invention leader tape winds off volume, with certified products winding tail welding sketch map.
Fig. 7 is that embodiment of the invention certified products rolls out mouth and wears the band sketch map.
Fig. 8 is that embodiment of the invention certified products winds off and leader tape welding sketch map.
Fig. 9 is that embodiment of the invention certified products volume is sheared sketch map with certified products volume leader tape.
Figure 10 is unloading volume and batching sketch map of embodiment of the invention certified products volume.
Figure 11 is that embodiment of the invention certified products batches, and magnetic tape trailer stays the weld sketch map.
Figure 12 is to the rolling sketch map of singlestandmill behind the embodiment of the invention welding band-leading.
Figure 13 produces sketch map with singlestandmill behind the embodiment of the invention welding band-leading continuously.
The specific embodiment
Specify the implementation step of the leader tape Welding Method & Equipment that originally are applicable to the single chassis reversable mill below in conjunction with embodiment and accompanying drawing thereof, but the method for operating specific embodiment of the present invention is not limited to following embodiment.
Embodiment one
Present embodiment is to wide 1200mm, long 1000m, and the non-oriented high grade silicon steel of thick 2mm (silicon content is greater than 2%) carries out the welding of Internal and external cycle leader tape, and the leader tape volume adopts wide 1200mm, long 1000m, the low grade non-oriented silicon steel of thick 2mm serves as.
Referring to Fig. 1, the welding band-leading continuously acting production lines of the cold rolling production of a kind of single chassis of the present invention, first uncoiler of arranging successively 1, first pair cut cut 2, second uncoiler 3, second pair cut cut 4, welding machine 5, heater 6, the 3rd pair cut and cut 7 and coiling machine 8.
Leader tape welding step of the present invention is following:
1) leader tape volume A is taken the lead behind the aligning the bad place of template to be sheared back uncoiling to coiling machine 8 by volume on second uncoiler 3, and is as shown in Figure 2;
2) certified products volume B wears band by volume on second uncoiler 3, and leader tape volume A magnetic tape trailer is parked in welding machine 5 places, and certified products volume B uncoiling outer ring takes the lead equally to weld to welding machine, and is as shown in Figure 3;
3) after the welding,, cut the 3rd pair of exit and to cut 7 and shear apart from leader tape length L place, as shown in Figure 4;
4) like Fig. 5, leader tape volume A unloads volume at coiling machine 8 places, and handling to the first uncoiler 1 is gone up volume; Heater drops into, and the band steel is heated on two surfaces up and down; Certified products volume B continues uncoiling, magnetic tape trailer whipping to welding machine 5 places; Certified products volume C is by volume on second uncoiler 3.
5) like Fig. 6, leader tape volume A is by 3 uncoilings of first uncoiler, cuts through first pair and cuts 2 and shear and take the lead bad part, takes the lead the aligning back in welding machine 5 places and certified products volume B welding, and butt welded seam digs the limit processing;
6) like Fig. 7; Behind the certified products volume B magnetic tape trailer welding band-leading, weld seam continues to wear band toward coiling machine 8 directions, and wearing strip length is 2L (L is that certified products is rolled up welding band-leading length end to end); Cut by second pair and cut 4 pairs of leader tapes volume A and shear this moment, shears back leader tape volume A rollback to the first and pair cut and to cut 2 positions;
7) like Fig. 8, certified products volume C is by 3 uncoilings of second uncoiler, after taking the lead to shear, accomplishes with a last step 6) leader tape and to take the lead the leader tape welding, and continue to batch;
8) like Fig. 9, cross the 3rd pair when welding band-leading and cut when cutting 7 position L, to cut by the 3rd pair and cut 7 pairs of leader tapes and shear, leader tape is cut in half after shearing, and takes the lead respectively to weld L length leader tape at last certified products volume B magnetic tape trailer with back one certified products volume C respectively;
9) like Figure 10, last certified products volume B unloads volume, and back one certified products volume C batches;
10) like Figure 11, certified products is rolled up the C magnetic tape trailer and is shut down to welding machine 5 positions, and certified products volume D goes up volume, and according to said sequence, the tail leader tape of taking the lead that carries out follow-up certified products volume welds.
11) certified products volume C unloads volume, unloads volume, weighs, bundling, and handling to singlestandmill is rolled.
In the production process, heater 6 (induction heater) is in the input state, and the heating belt steel temperature is 90 ℃.
Referring to Figure 12, certified products volume C is by volume (or through uncoiler uncoiling) on the singlestandmill 11 inlet coiling machines 12, behind the band that wears long; The outer ring leader tape is stung jaw, is batched at outlet coiling machine 13; When the leader tape weld seam arrives the outlet turning roller, stop to wear band, the working roll of packing into, be rolled after setting up tension force, when being rolling to certified products volume C magnetic tape trailer leader tape weld seam and arriving inlet turning roll; Stop rolling (when using the uncoiler uncoiling, should sting jaw, batch this moment at inlet coiling machine place).After the rolling end of coil of strip, certified products volume C Internal and external cycle leader tape separates with certified products volume C with the form of throwing rouleau or excision, and certified products volume C gets into road annealing operation down.(annotate: on the outlet coiling machine on volume operation and the inlet coiling machine volume operate that only rolling direction is opposite, method of operating is identical)
Figure 13 produces sketch map with singlestandmill behind the embodiment of the invention welding band-leading continuously.9 is the uncoiler of singlestandmill, and 10 is coiling machine.The leader tape volume is through uncoiler 9 leader tapes, and after welding, it is rolling directly to get into singlestandmill, and is batched by coiling machine 10 completion.
With coil of strip not welding band-leading calculate, milling train gateway coiling machine batches band steel 7.5m, gateway coiling machine spacing is that 12m calculates, then the theoretical certified products lumber recovery of milling train is (1000-7.5 * 2-12)/1000 * 100%=97.3%.And behind the welding band-leading, the 7.5m band steel that milling train gateway coiling machine batches is a leader tape, and then the theoretical lumber recovery of certified products is (1000-12)/1000 * 100%=98.8%.By on can draw, adopting this leader tape welding unit can improve the theoretical lumber recovery of milling train is 1.5%.
Embodiment two
Present embodiment and embodiment one difference are that stock roll is silicon content and carries out the leader tape welding less than the low trade mark in 2%; Induction heater does not come into operation; Used leader tape material is silicon content less than 2% low grade silicon steel, and the step of leader tape welding is identical with embodiment one.
Embodiment three
Present embodiment and embodiment two differences are stock roll stainless steel coil of strip, carry out the leader tape welding, and induction heater does not drop into, and used leader tape material is an ordinary carbon steel, and the leader tape welding step is identical with embodiment one.
Embodiment four
Present embodiment and embodiment one difference are stock roll silicon steel volume is carried out the leader tape welding, adopt hot-air drier that belt steel surface is heated, and heating-up temperature is 80-90 ℃, and the leader tape welding step is identical with embodiment one.
Embodiment five
The difference of present embodiment and the foregoing description is: shown in figure 13, after leader tape welding unit is good with the welding of coil of strip leader tape, directly carry out carrying out in the single chassis reversable mill the rolling of first passage, and produce continuously.This kind mode has reduced at leader tape welding unit and has unloaded volume, and hang then and roll up to the single chassis reversable mill, and then the rolling operation of uncoiling, practiced thrift the production time, improved hourly output.
In the foregoing description, certified products coiled material matter can be special steel, stainless steel, silicon steel etc. and uses the cold rolling steel grade of singlestandmill, and leader tape coiled material matter can be identical with certified products coiled material matter, or adopts and can satisfy the low-cost steel grades such as carbon steel that weldability requires.
Main feature of the present invention:
The one, adopt the method for tail welding band-leading of taking the lead, improved the lumber recovery that singlestandmill is produced cold rolling finished product volume;
The 2nd, realized unlike material band steel is selected different mode of heatings, both have combined to improve the flexibility of producing.The band steel big to steel fragility adopts induction heating method pioneeringly, the band steel is heated, and induction heating temperature is adjustable, and heating uniformity is strong, has improved the aptitude to rolling of back planning sheet machine frame rolling mill.For the little band steel of fragility, then do not adopt heating, directly to operation production down;
The 3rd, realized that production efficiency is high, produces when satisfying many units, in addition, can realize the assembly volume welding to different steel to taking the lead the leader tape welding of tail;
The 4th, realized quick switching, and can select for use the unlike material leader tape to accomplish, thereby the time of improving unit is started rate for different size band steel welding band-leading;
The 5th, the present invention utilizes the layout of uncoiler and coiling machine, can realize the adaptability to the supplied materials coil of strip, and can realize being with the steel turn-over;
The 6th, utilize and can directly advance the single chassis reversable mill behind the welding band-leading of the present invention and be rolled, reduce and unload pilot process such as volume, handling, the production of realization continous way is enhanced productivity.
Claims (9)
1. a leader tape welding production line that is applicable to singlestandmill is characterized in that, first uncoiler of arranging successively, first pair are cut and cut, second uncoiler, second pair are cut and cut, welding machine, heater, the 3rd pair are cut and cut and coiling machine.
2. the leader tape welding production line that is applicable to singlestandmill as claimed in claim 1 is characterized in that, also is provided with two straighteners behind described first, second uncoiler respectively.
3. the leader tape welding production line that is applicable to singlestandmill as claimed in claim 1 is characterized in that, crescent moon of layout is cut behind the described welding machine.
4. the leader tape welding production line that is applicable to singlestandmill as claimed in claim 1 is characterized in that, the jockey pulley that a cover is guaranteed tension stability also is set before the described heater.
5. like claim 1 or the 4 described leader tape welding production lines that are applicable to singlestandmill, it is characterized in that described heater is gas heater, storage heater, electric heater or induction heater.
6. a leader tape that is applicable to singlestandmill welds production method, and it comprises the steps:
1) leader tape is rolled up A and go up volume, take the lead behind the aligning the bad place of template to be sheared the back uncoiling to coiling machine, realize reducing the coil of strip internal diameter to second uncoiler;
2) certified products volume B goes up volume to second uncoiler, and the bad part in outer ring is sheared in uncoiling, and leader tape volume A batches to the magnetic tape trailer whipping and stops to the welding machine place; Take the lead equally to welding machine certified products volume B uncoiling outer ring; Accomplish and the welding of leader tape volume A magnetic tape trailer, magnetic tape trailer leader tape length L, L is that certified products is rolled up welding band-leading length end to end; After the welding, butt welded seam digs the limit and handles;
3) leader tape volume A in the exit the 3rd pair cut and cut shearing;
4) leader tape volume A unloads volume, and handling to the first uncoiler is also accomplished and gone up volume, and the heater input heats on two surfaces up and down the band steel; Certified products volume B continues uncoiling, and the magnetic tape trailer whipping is to the welding machine place, and certified products volume C goes up volume to first uncoiler;
5) leader tape volume A takes the lead the aligning back to welding machine, accomplishes the welding of certified products volume B magnetic tape trailer, and after the welding, butt welded seam digs the limit and handles;
6) behind the certified products volume B magnetic tape trailer welding band-leading, weld seam continues to wear band toward the coiling machine direction, and wearing strip length is 2L, and cut to cut by second pair leader tape volume A is sheared this moment, shears back leader tape volume A rollback to the first and pair cuts and to cut the position;
7) certified products volume C is by the second uncoiler uncoiling, after taking the lead to shear, takes the lead to rest on the welding machine place, accomplishes with the step 6) leader tape and takes the lead the leader tape welding, and continue to batch;
8) according to the requirement of welding band-leading length L, cut the place of cutting at the 3rd pair leader tape 2L is carried out the centre shearing, accomplish certified products volume B magnetic tape trailer simultaneously and separate with the leader tape that certified products volume C takes the lead;
9) certified products volume B unloads volume, and back one certified products volume C batches;
10) certified products volume C magnetic tape trailer is shut down to the welding machine position, and certified products volume D goes up volume, and according to said sequence, and that carries out follow-up certified products volume takes the lead the welding of tail leader tape;
11) certified products volume C unloads volume, unloads volume, weighs, bundling, and handling to singlestandmill is rolled.
7. the leader tape welding production method that is applicable to singlestandmill as claimed in claim 6 is characterized in that laser weld is adopted in described welding, or adopts the welding manner that fills silk or do not fill silk, or selects the welding manner of argon arc welding.
8. the leader tape welding production method that is applicable to singlestandmill as claimed in claim 6 is characterized in that described heating means adopt coal gas heating, hot blast heating, electrical heating or induction heating mode.
9. the leader tape welding production method that is applicable to singlestandmill as claimed in claim 6 is characterized in that the material of described leader tape volume is identical with the certified products volume, or selects for use and the different carbon steel sheet of certified products parent roll material.
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