CN106269873B - Utilize the method for holding pit and single heating furnace tandem rolling production hot-rolled orientation silicon steel - Google Patents
Utilize the method for holding pit and single heating furnace tandem rolling production hot-rolled orientation silicon steel Download PDFInfo
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- CN106269873B CN106269873B CN201610610322.7A CN201610610322A CN106269873B CN 106269873 B CN106269873 B CN 106269873B CN 201610610322 A CN201610610322 A CN 201610610322A CN 106269873 B CN106269873 B CN 106269873B
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- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 179
- 238000010438 heat treatment Methods 0.000 title claims abstract description 107
- 238000005096 rolling process Methods 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 19
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000003801 milling Methods 0.000 claims description 16
- 230000007704 transition Effects 0.000 claims description 10
- 238000012790 confirmation Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 2
- 229910052710 silicon Inorganic materials 0.000 claims 2
- 239000010703 silicon Substances 0.000 claims 2
- 238000009749 continuous casting Methods 0.000 abstract description 3
- 230000033764 rhythmic process Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 241001062472 Stokellia anisodon Species 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The present invention relates to the production method of the hot-rolled orientation silicon steel in metallurgical technical field of steel rolling, more particularly to a kind of method for producing hot-rolled orientation silicon steel using holding pit and single heating furnace tandem rolling, the orientation silicon steel strand that the present invention is produced using silicon steel special-purpose thermal insulation hole to steel-making continuous casting carries out insulation buffering, pass through planned adjustment and the layout production schedule, using single heating furnace, namely orientation silicon steel is heated using silicon steel special heating furnace, in rolling by orientation silicon steel lacing in different rolling units, the steel grade met in the orientation silicon steel and common heating furnace of rolling condition is subjected to tandem rolling in units of rolling unit.The present invention using silicon steel special-purpose thermal insulation hole insulation silicon steel blank can buffer smelt rolling rhythm between mismatch, while ensure silicon steel blank will not cold conditions shove charge, reduce scrappage；Subdivision tandem rolling is carried out using silicon steel blank and other steel grade blanks, it is possible to increase rolling efficiency, it is cost-effective.
Description
Technical field
The present invention relates to the production method of the hot-rolled orientation silicon steel in metallurgical technical field of steel rolling, and in particular to one kind utilizes
The method of holding pit and single heating furnace tandem rolling production hot-rolled orientation silicon steel.
Background technology
Orientation silicon steel production technology is extremely complex, and control difficulty is larger, the handicraft being often described as in steel products.Due to
The particularity of its steel grade, alloy content is higher, therefore orientation silicon steel hot rolled coil generally coordinates heat even using heating furnace direct loading process
Milling train group carries out continuous rolling production.Major control difficult point is embodied in：1. direct loading process is taken between smelting procedure and rolling process
Rhythm of production matching it is poor；2. the blank that smelting procedure is produced is unable to cold conditions shove charge, otherwise all scrap, it is necessary to adopt
Cut-off is hinged with stove or the mode of hot shove charge is carried out；3. orientation silicon steel heats to heating furnace, technological requirement is extremely strict, and heating is warm
Degree is required at 1250 DEG C ~ 1350 DEG C, higher than general steel grade temperature requirement, while time inside furnace requirement is no less than 180min, than one
As steel grade time requirement length it is more, the general steel grade heat time is 120-150min, therefore can not be loaded in mixture with other steel grades, Zhi Nengdan
Only shove charge heating；4. rolling specs are relatively thin, the rolling milimeter number of monovolume is longer, the stabilization that hot tandem rolls for guarantee in addition
Property need to arrange hot rolling material and transition blank in same unit, therefore to be unable to continuous rolling excessive, it is necessary to subdivision for same rolling unit
Rolling；5. because the orientation silicon steel heat time is longer, it is sometimes desirable to wait steel rolling, production capacity is relatively low during platform, and production efficiency is not high；⑥
Orientation silicon steel needs to ensure high heating-up temperature for a long time, the larger infringement of the presence to heating furnace, the cleaning and maintenance of heating furnace
Difficulty is big, costly.Due to many controlling difficulties and restrictive condition be present, so orientation silicon steel quantity-produced technology controlling and process
Difficulty is very big, and production chains are poor, once going wrong, batch will occurs and scrap, it typically can only disposably produce 600 ~
800 tons, production cost is higher.How to make that the flexibility of its technology controlling and process is more preferable, blank smaller to the influence degree of production efficiency
The risk scrapped of batch is smaller, production cost is more easily controlled, and is always the problem of related metallargist endeavours research.
Big produce reality technological requirement is combined for this present invention, developing one, buffer capacity is strong, production efficiency is high, safety
The rolling process flow of the high hot-rolled orientation silicon steel volume of coefficient, and utilization of being succeeded in big production, its technique are easy to
Realize, flexibility is of a relatively high, is easy to evade the risk that blank batch is scrapped, while its product quality has obtained Downstream Market use
The consistent accreditation at family.
The content of the invention
The invention provides a kind of method for producing hot-rolled orientation silicon steel using holding pit and single heating furnace tandem rolling, change
Enter heating furnace steel loading mode, stove heat heated using single, when roll orientation silicon steel using divide rolling unit and other steel grades by
The mode of tandem rolling is carried out, and is realized long-time continuous production, is improved production efficiency, reduces production cost.
In summary, in order to solve the above-mentioned technical problem, the technical scheme of present invention is realized in：
A kind of method for producing hot-rolled orientation silicon steel using holding pit and single heating furnace tandem rolling, it is characterised in that should
Method comprises the following steps：
Step 1：The rolling scaduled establishment of silicon steel：Confirm plan number, rolling mode, quantity, specification, stock number and open
Begin the time, be incorporated into plan；
Step 2：Judge whether blank is qualified：Silicon steel blank is delivered to by silicon steel strand after line cut-out through blank roller-way
Online weighing/confirmation/detection/judgement area is made to determine whether is qualified, and step 3 is transferred to if qualified；Otherwise by underproof silicon
Steel blank is transferred to offline storage area；
Step 3：Determine whether direct shove charge：It is true that silicon steel blank qualified in the step 2 is transported to blank shove charge
Recognize area, the blank shove charge confirm area confirm silicon steel special heating furnace possess steel loading condition be then directly loadable into the silicon steel it is special plus
Hot stove；Otherwise the directly offline loading of the silicon steel blank is shifted to an earlier date in preheated silicon steel special-purpose thermal insulation hole, by that analogy；
Step 4：Roll the blank in common heating furnace：After the silicon steel special heating furnace described in the step 3 is filled, to silicon
Steel special heating furnace carries out heating operation, and heating-up temperature is 1250 DEG C ~ 1350 DEG C, and the heat time is no less than 180min, now
The blank that milling train is heated using common heating furnace normally rolls；
Step 5：Roll the transition blank in common heating furnace：Heated apart from the step 4 silicon steel special heating furnace
When also surplus 20-30min is completed in operation, milling train starts to roll the silicon steel transition blank of the common heating furnace, and successive optimization rolls
Simulation；
Step 6：Roll the silicon steel blank in silicon steel special heating furnace：It is special that milling train starts to roll silicon steel in the step 4
With the silicon steel blank in heating furnace, the common heating furnace enters heating and thermal insulation state；The silicon steel special heating furnace often goes out one
While block silicon steel blank enters rolling sequence, one block of silicon steel blank of supplement loads out of blank roller-way or silicon steel special-purpose thermal insulation hole
In silicon steel special heating furnace, ensure to fill silicon steel blank all the time in the silicon steel special heating furnace, the like, until first
Silicon steel rolling unit terminates；
Step 7：The blank in common heating furnace is rolled again：Now first silicon steel rolling unit terminates, and opens
Beginning enters heating and thermal insulation state；If there is the silicon steel blank for failing to load the silicon steel special heating furnace, direct offline loading
The insulation of silicon steel special-purpose thermal insulation hole；Now milling train then starts to roll the blank in the common heating furnace again, until when next
The arrival of individual silicon steel rolling unit；
Step 8：The rolling of silicon steel rolling unit is carried out according to the step 5 to step 7, by that analogy, until silicon steel
All rolling terminates blank.
Further, silicon steel special-purpose thermal insulation hole is persistently incubated by 400 DEG C of -600 DEG C of heat-retaining conditions in the step 3.
Further, common heating furnace is provided with and is no less than 2 in the step 4.
Further, first silicon steel rolling unit terminates to refer to all satisfactions in silicon steel special heating furnace in the step 6
Heating, the silicon steel blank of rolling condition all roll, and remaining silicon steel blank can not temporarily meet to add in silicon steel special heating furnace
Heat, the condition of rolling.
Further, the silicon steel in all steps refers both to orientation silicon steel.
The beneficial effect of the present invention compared with prior art：
The main orientation silicon steel strand produced using silicon steel special-purpose thermal insulation hole to steel-making continuous casting of the invention is incubated
Buffering, by planned adjustment and the layout production schedule, using single heating furnace, namely using silicon steel special heating furnace to orientation
Silicon steel is heated, and in rolling by orientation silicon steel lacing in different rolling units, will meet to roll in units of rolling unit
Steel grade in the orientation silicon steel and common heating furnace of condition processed carries out tandem rolling, specifically：
（1）Smelting and the mismatch between rolling rhythm can be buffered using silicon steel special-purpose thermal insulation hole insulation silicon steel blank,
The flexibility and security, disposable continuous production amount for ensureing production process can improve about 1 times；
（2）Confirm that area determines whether direct shove charge using blank shove charge, confirm that direct shove charge then directly fills silicon steel blank
Stove, otherwise by the directly offline loading of silicon steel blank silicon steel special-purpose thermal insulation hole preheated in advance, ensure that silicon steel blank will not be cold
State shove charge, reduces scrappage；
（3）Using single heating furnace, namely concentrated using silicon steel special heating furnace and load silicon steel blank, beneficial to saving energy consumption,
Stable heating technique, damage of the silicon steel high-temperature heating to heating furnace can be mitigated, be easy to the concentration of silicon steel heating furnace to clear up and tie up
Shield；
（4）Subdivision tandem rolling is carried out using silicon steel blank and other steel grade blanks, it is possible to increase rolling efficiency, avoid
The steel phenomenon such as milling train, it is cost-effective.
Embodiment
The present invention is further described with reference to specific embodiment, to more fully understand the present invention, but the present invention
Protection domain be not limited to this.
Exemplified by the present embodiment is using an actual production of hot-rolled orientation silicon steel, one kind is handed over using holding pit and single heating furnace
The method for pitching Rolling Production hot-rolled orientation silicon steel, this method comprise the following steps：
Step 1：According to orientation silicon steel planning, confirmation enterprise number is H1620321, rolling width 1250mm, thickness
Spend for 2.3mm, it is contemplated that production volume 80, substance 20t, common 1600t are often rolled up, in the works during the 1st piece of silicon steel blank continuous casting cut-out
Carve as 11：30, silicon steel blank numbering is 6M01007K01.
Step 2：Judge whether blank is qualified：By the cut off in step 1 the 1st block of silicon steel blank, warm conveying blank
Roller-way is delivered to blank online weighing/confirmation/detection/judgement area, carries out Weighing, heat/lot number and confirms, if silicon steel blank
Judge it is qualified be transported to subsequent processing, be transferred to step 3；If the judgement of silicon steel blank is unqualified, underproof silicon steel blank is transferred to
Offline storage area.
Step 3；Determine whether direct shove charge：Take the direct shove charge of strand or silicon steel special-purpose thermal insulation pit casting base hot charging shove charge
Mode, area, blank shove charge will be confirmed through judging that qualified silicon steel blank be transported to blank shove charge through blank roller-way in step 2
Confirm that area confirms whether silicon steel special heating furnace possesses the condition of the direct shove charge of silicon steel blank, directly fills if possessing steel loading condition
Enter silicon steel special heating furnace；Now silicon steel special heating furnace possesses steel loading condition, and silicon steel blank is directly loadable into the special heating of silicon steel
Stove, moment 11：50；By that analogy, silicon steel blank is sequentially loaded into silicon steel special heating furnace；Loading the 29th block of silicon steel blank
Afterwards, silicon steel special heating furnace is filled；Blank shove charge confirms that area confirms that silicon steel special heating furnace does not possess direct shove charge condition, then
Deliver to blank shove charge and confirm that the silicon steel blank in area is then loaded in silicon steel special-purpose thermal insulation hole preheated in advance by directly offline.Silicon steel
Special-purpose thermal insulation hole is persistently incubated during silicon steel smelting-rolling by 400 DEG C of -600 DEG C of heat-retaining conditions.
Step 4：Roll the blank in common heating furnace：The silicon steel special heating furnace of silicon steel blank will be filled in step 3
Heating operation is carried out, heating-up temperature is 1250 DEG C ~ 1350 DEG C, and the heat time is that milling train now rolls commonly no less than 180min
The Q235B blanks of heating furnace.
Step 5：Roll the transition blank in common heating furnace：16：When 40, completed apart from silicon steel blank heating also surplus
During 20min, milling train starts to roll the silicon steel transition blank Q235B of common heating furnace, and now mill milling specification is progressively to orientation
Silicon steel goal standard is close, and successive optimization rolling model；By calculating after last block transition blank has been rolled, silicon steel base
Material heating should meet rolling condition, i.e., silicon steel blank heating temperature is at 1250 DEG C ~ 1350 DEG C, and silicon steel preform heating time is
In more than 180min, and start to carry out block-by-block rolling to silicon steel blank；Transition blank be because orientation silicon steel hot rolling volume specification compared with
Thin, typically within 2.5mm, and hot tandem needs progressively to be rolled to thin by thickness, therefore needs plan ahead transition blank.
Step 6：Roll the silicon steel blank in silicon steel special heating furnace：17：When 05, it is special that milling train starts rolling silicon steel
The 1st block of silicon steel blank in heating furnace, common heating furnace enter heating and thermal insulation state；Silicon steel special heating furnace often goes out one block of silicon steel
While blank enters rolling sequence, it is special to load silicon steel for one block of silicon steel blank of supplement out of blank roller-way or silicon steel special-purpose thermal insulation hole
With in heating furnace, silicon steel blank is filled all the time in guarantee silicon steel special heating furnace, the like, until first silicon steel rolling is single
Member terminates.
Step 7：The blank in common heating furnace is rolled again：Milling train is 17：56 when rolling the 14th block of silicon steel, and silicon steel is special
Heating rolling process conditions have been unsatisfactory for the 15th block of silicon steel blank in heating furnace, now silicon steel first module rolling terminates,
And initially enter heating and thermal insulation state；If there is the silicon steel blank for failing to load silicon steel special heating furnace, direct offline loading
Silicon steel special-purpose thermal insulation hole is incubated, and now milling train starts to roll the Q235B blanks of common heating furnace, until when next silicon steel rolls
The arrival of unit processed.
Step 8：The rolling of silicon steel rolling unit is carried out according to step 5 to step 7, by that analogy, until silicon steel blank
All rolling terminates.
It is noted that above-described embodiment is general to the illustrative and not limiting of technical solution of the present invention, art
The equivalent substitution of logical technical staff or the other modifications made according to prior art, as long as not exceeding technical solution of the present invention
Thinking and scope, it should be included within interest field of the presently claimed invention.
Claims (4)
- A kind of 1. method for producing hot-rolled orientation silicon steel using holding pit and single heating furnace tandem rolling, it is characterised in that the party Method comprises the following steps：Step 1：The rolling scaduled establishment of silicon steel：When confirming plan number, rolling mode, quantity, specification, stock number and starting Between, it is incorporated into plan；Step 2：Judge whether blank is qualified：Silicon steel blank is delivered to by orientation silicon steel strand after line cut-out through blank roller-way Online weighing/confirmation/detection/judgement area is made to determine whether is qualified, and step 3 is transferred to if qualified；Otherwise by underproof silicon Steel blank is transferred to offline storage area；Step 3：Determine whether direct shove charge：Silicon steel blank qualified in the step 2 is transported to blank shove charge and confirms area, The blank shove charge confirms that area confirms that silicon steel special heating furnace possesses steel loading condition and is then directly loadable into the silicon steel special heating furnace； Otherwise by the directly offline loading of silicon steel blank silicon steel special-purpose thermal insulation hole preheated in advance；By that analogy；Step 4：Roll the blank in common heating furnace：After the silicon steel special heating furnace described in the step 3 is filled, silicon steel is special Heating furnace carries out heating operation according to orientation silicon steel heating technique, and heating-up temperature is 1250 DEG C ~ 1350 DEG C, and the heat time is many In 180min, the blank that now milling train is heated using common heating furnace normally rolls；Step 5：Roll the transition blank in common heating furnace：Apart from the step 4 silicon steel special heating furnace heating operation When completing also surplus 20-30min, being required according to silicon steel rolling specs, milling train starts to roll the transition blank of the common heating furnace, And successive optimization rolling model；Step 6：Roll the silicon steel blank in silicon steel special heating furnace：Milling train start to roll silicon steel in the step 4 it is special plus Silicon steel blank in hot stove, the common heating furnace enter heating and thermal insulation state；The silicon steel special heating furnace often goes out one block of silicon While steel blank enters rolling sequence, one block of silicon steel blank of supplement loads silicon steel out of blank roller-way or silicon steel special-purpose thermal insulation hole In special heating furnace, ensure to fill silicon steel blank all the time in the silicon steel special heating furnace, the like, until first silicon steel Rolling unit terminates；Step 7：The blank in common heating furnace is rolled again：Now first silicon steel rolling unit terminates, and starts Into heating and thermal insulation state；If there is the silicon steel blank for failing to load the silicon steel special heating furnace, direct offline loading silicon The insulation of steel special-purpose thermal insulation hole；Now milling train then starts to roll the blank in the common heating furnace again, until when next The arrival of silicon steel rolling unit；Step 8：The rolling of silicon steel rolling unit is carried out according to the step 5 to step 7, by that analogy, until silicon steel blank All rolling terminates.
- A kind of 2. side that hot-rolled orientation silicon steel is produced using holding pit and single heating furnace tandem rolling according to claim 1 Method, it is characterised in that silicon steel special-purpose thermal insulation hole is persistently incubated by 400 DEG C of -600 DEG C of heat-retaining conditions in the step 2.
- A kind of 3. side that hot-rolled orientation silicon steel is produced using holding pit and single heating furnace tandem rolling according to claim 1 Method, it is characterised in that common heating furnace, which is provided with, in the step 4 is no less than 2.
- A kind of 4. side that hot-rolled orientation silicon steel is produced using holding pit and single heating furnace tandem rolling according to claim 1 Method, it is characterised in that the silicon steel in the step 1 ~ step 8 is orientation silicon steel.
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| CN110388834A (en) * | 2019-07-29 | 2019-10-29 | 山东泰山钢铁集团有限公司 | A method of it improving steel plant and is heat-fed steel slab rate |
| CN111020171B (en) * | 2019-12-18 | 2021-08-13 | 东北轻合金有限责任公司 | Method for heating aluminum alloy ingot casting by using continuous charging mode of push type heating furnace |
| CN113020283B (en) * | 2021-03-18 | 2023-01-17 | 鞍钢股份有限公司 | Shape control method for oriented silicon steel hot-rolled steel strip |
| CN114309080B (en) * | 2021-11-29 | 2023-10-03 | 邯郸钢铁集团有限责任公司 | Method for judging direct hot charging of conventional hot continuous rolling production line |
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| US5676771A (en) * | 1993-09-29 | 1997-10-14 | Kawasaki Steel Corporation | Non-oriented silicon steel sheet and method |
| US6478899B1 (en) * | 1998-02-25 | 2002-11-12 | Ugine S.A. | Installation for making cold rolled stainless steel bands |
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