CN106269873A - Utilize the method that holding pit and single heating furnace tandem rolling produce hot-rolled orientation silicon steel - Google Patents
Utilize the method that holding pit and single heating furnace tandem rolling produce hot-rolled orientation silicon steel Download PDFInfo
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- CN106269873A CN106269873A CN201610610322.7A CN201610610322A CN106269873A CN 106269873 A CN106269873 A CN 106269873A CN 201610610322 A CN201610610322 A CN 201610610322A CN 106269873 A CN106269873 A CN 106269873A
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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 116
- 238000005096 rolling process Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 33
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 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
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract description 4
- 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
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000004899 motility Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000012423 maintenance Methods 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 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
Abstract
The present invention relates to the production method of hot-rolled orientation silicon steel in metallurgical technical field of steel rolling, it is specifically related to a kind of method utilizing holding pit and single heating furnace tandem rolling to produce hot-rolled orientation silicon steel, the orientation silicon steel strand that the present invention utilizes silicon steel special-purpose thermal insulation hole to produce steel-making continuous casting carries out insulation buffering, by planned adjustment and the layout production schedule, use single heating furnace, namely use silicon steel special heating furnace that orientation silicon steel is heated, when rolling by orientation silicon steel lacing at different rolling units, in units of rolling unit, the steel grade met in the orientation silicon steel of rolling condition and common heating furnace is carried out tandem rolling.The present invention utilize silicon steel special-purpose thermal insulation hole insulation silicon steel blank can buffer smelting and rolling rhythm between mismatch, simultaneously ensure silicon steel blank will not cold conditions shove charge, reduce scrappage；Silicon steel blank and other steel grade blanks are used to carry out subdivision tandem rolling, it is possible to increase rolling efficiency, cost-effective.
Description
Technical field
The present invention relates to the production method of hot-rolled orientation silicon steel in metallurgical technical field of steel rolling, be specifically related to a kind of utilization
The method that holding pit and single heating furnace tandem rolling produce hot-rolled orientation silicon steel.
Background technology
Orientation silicon steel production technology is extremely complex, controls difficulty relatively big, is often described as the artware in steel products.Due to
The particularity of its steel grade, alloy content is higher, therefore orientation silicon steel hot rolled coil generally individually uses heating furnace direct loading process to coordinate heat even
Milling train group carries out continuous rolling production.Major control difficult point is embodied in: 1. take direct loading process between smelting procedure and rolling process
Rhythm of production matching poor；2. the blank that smelting procedure is produced can not cold conditions shove charge, the most all scrap, it is necessary to adopt
The mode of cut-off tipping stove or hot shove charge is carried out；3. orientation silicon steel is extremely strict to heating furnace heating technological requirement, heating temperature
Degree requires at 1250 DEG C ~ 1350 DEG C, higher than general steel grade temperature requirement, and time inside furnace requires no less than 180min, ratio one simultaneously
As steel grade time requirement length many, general steel grade heat time heating time is 120-150min, therefore can not load in mixture with other steel grades, Zhi Nengdan
Solely shove charge heating；4. rolling specs is relatively thin, and the rolling milimeter number of monovolume is longer, and hot tandem is to ensure stablizing of rolling in addition
Property need to arrange hot rolling material and transition blank at same unit, therefore same rolling unit can not continuous rolling too much, need subdivision
Rolling；5. longer for heat time heating time due to orientation silicon steel, it is sometimes desirable to waiting steel rolling, during platform, production capacity is relatively low, and production efficiency is the highest；⑥
Orientation silicon steel needs the heating-up temperature that long-time guarantee is high, the bigger infringement of existence to heating furnace, the cleaning of heating furnace and maintenance
Difficulty is greatly, costly.Owing to there is many controlling difficulties and restrictive condition, so orientation silicon steel quantity-produced technology controlling and process
Difficulty is very big, and production chains is poor, once goes wrong, and will occur that batch is scrapped, the most disposably can only produce 600 ~
800 tons, production cost is higher.How to make the motility of its technology controlling and process more preferably, blank less to the influence degree of production efficiency
The risk that batch is scrapped is less, production cost is more easily controlled, the problem that the most relevant metallargist endeavours research.
Combining big production actual process requirement for this present invention, buffer capacity is strong, production efficiency is high, safety to develop one
The rolling process flow process of the hot-rolled orientation silicon steel volume that coefficient is high, and utilization of succeeding in big production, its technique is prone to
Realizing, motility is of a relatively high, it is simple to evading the risk that blank batch is scrapped, its product quality has obtained Downstream Market use simultaneously
The consistent accreditation at family.
Summary of the invention
The invention provides a kind of method utilizing holding pit and single heating furnace tandem rolling to produce hot-rolled orientation silicon steel, change
Enter heating furnace steel loading mode, use single heating furnace heating, use when rolling orientation silicon steel point rolling unit and other steel grades to press
The mode of tandem rolling is carried out, it is achieved that long-time production continuously, improves production efficiency, reduces production cost.
In sum, in order to solve above-mentioned technical problem, the technical scheme of present invention is achieved in that
A kind of method utilizing holding pit and single heating furnace tandem rolling to produce hot-rolled orientation silicon steel, it is characterised in that the method
Comprise the steps:
Step one: the rolling scaduled establishment of silicon steel: when confirming plan number, rolling mode, quantity, specification, stock number and beginning
Between, enroll plan；
Step 2: judge that blank is the most qualified: after silicon steel strand cuts off online, be delivered to online through blank roller-way by silicon steel blank
District of weighing/confirm/detect/judge is made to determine whether qualified, if qualified, proceeds to step 3；Otherwise by underproof silicon steel base
Material proceeds to the storage area that rolls off the production line；
Step 3: determine whether direct shove charge: silicon steel blank qualified in described step 2 is transported to blank shove charge and confirms district,
Described blank shove charge confirms that district confirms that silicon steel special heating furnace possesses steel loading condition and is then directly loadable into described silicon steel special heating furnace；
Otherwise described silicon steel blank is directly rolled off the production line and load in the most preheated silicon steel special-purpose thermal insulation hole, by that analogy；
Step 4: the blank in rolling common heating furnace: after silicon steel special heating furnace described in step 3 is filled, special to silicon steel
Carrying out heating operation with heating furnace, heating-up temperature is 1250 DEG C ~ 1350 DEG C, and heat time heating time is no less than 180min, now milling train
The blank utilizing common heating furnace to heat normally rolls；
Step 5: the transition blank in rolling common heating furnace: apart from described step 4 silicon steel special heating furnace heating operation
When completing also to remain 20-30min, milling train starts to roll the silicon steel transition blank of described common heating furnace, and successive optimization rolling die
Type；
Step 6: the silicon steel blank in rolling silicon steel special heating furnace: milling train starts to roll in described step 4 that silicon steel is special to be added
Silicon steel blank in hot stove, described common heating furnace enters heating and thermal insulation state；Described silicon steel special heating furnace often goes out one block of silicon
While steel blank enters rolling sequence, in blank roller-way or silicon steel special-purpose thermal insulation are cheated, supplement one block of silicon steel blank load silicon steel
In special heating furnace, it is ensured that fill silicon steel blank all the time in described silicon steel special heating furnace, the like, until first silicon steel
Rolling unit terminates；
Step 7: again rolling common heating furnace in blank: the most described first silicon steel rolling unit terminates, and start into
Enter heating and thermal insulation state；If also failing to load the silicon steel blank of described silicon steel special heating furnace, the most directly roll off the production line loading silicon steel
The insulation of special-purpose thermal insulation hole；Now milling train then starts again to roll the blank in described common heating furnace, until waiting until next silicon
The arrival of steel rolling unit；
Step 8: the rolling of silicon steel rolling unit is carried out according to described step 5 to step 7, by that analogy, until silicon steel blank
All rolling terminates.
Further, in described step 3, silicon steel special-purpose thermal insulation hole is persistently incubated by 400 DEG C of-600 DEG C of heat-retaining conditions.
Further, in described step 4, common heating furnace is provided with no less than 2.
Further, in described step 6, first silicon steel rolling unit is all in terminating to refer to silicon steel special heating furnace meets
Heating, the silicon steel blank of rolling condition all roll, and in silicon steel special heating furnace, remaining silicon steel blank temporarily can not meet and adds
Heat, the condition of rolling.
Further, described in steps in silicon steel refer both to orientation silicon steel.
Present invention beneficial effect compared to existing technology:
The orientation silicon steel strand that the present invention mainly utilizes silicon steel special-purpose thermal insulation hole to produce steel-making continuous casting carries out insulation buffering,
By planned adjustment and the layout production schedule, use single heating furnace, namely use silicon steel special heating furnace to orientation silicon steel
Heat, when rolling by orientation silicon steel lacing at different rolling units, by satisfied rolling bar in units of rolling unit
Steel grade in the orientation silicon steel of part and common heating furnace carries out tandem rolling, specifically:
(1) insulation silicon steel blank in silicon steel special-purpose thermal insulation hole is utilized can to buffer the mismatch between smelting and rolling rhythm, it is ensured that
The motility of production process and safety, disposable volume of production continuously can improve about 1 times；
(2) utilize blank shove charge confirm district determine whether direct shove charge, confirm direct shove charge then by direct for silicon steel blank shove charge, no
Then silicon steel blank is directly rolled off the production line and load in the most preheated silicon steel special-purpose thermal insulation hole, it is ensured that silicon steel blank will not cold conditions dress
Stove, reduces scrappage；
(3) use single heating furnace, namely use silicon steel special heating furnace to concentrate loading silicon steel blank, beneficially energy efficient, stable
Heating technique, it is possible to alleviate the damage to heating furnace of the silicon steel high-temperature heating, it is simple to the concentration cleaning of silicon steel heating furnace and maintenance；
(4) silicon steel blank and other steel grade blanks are used to carry out subdivision tandem rolling, it is possible to increase rolling efficiency, it is to avoid milling train
Deng steel phenomenon, cost-effective.
Detailed description of the invention
The present invention is further described, in order to be more fully understood that the present invention below in conjunction with specific embodiment, but the present invention
Protection domain be not limited to this.
As a example by the present embodiment uses an actual production of hot-rolled orientation silicon steel, one utilizes holding pit and single heating furnace to hand over
The method of fork Rolling Production hot-rolled orientation silicon steel, the method comprises the steps:
Step one: according to orientation silicon steel planning, confirmation enterprise number is H1620321, and rolling width is 1250mm, thickness is
2.3mm, it is contemplated that produce volume 80, often volume substance 20t, altogether 1600t, the 1st piece of silicon steel blank continuous casting cut-out moment is in the works
11:30, the numbered 6M01007K01 of silicon steel blank.
Step 2: judge that blank is the most qualified: the 1st block of silicon steel blank that will cut off in step one, warm conveying blank
Roller-way is delivered to blank online weighing/confirmation/detection/judgement district, carries out Weighing, heat/lot number confirmation, if silicon steel blank
Judge qualified to be transported to subsequent processing, proceed to step 3；If silicon steel blank judges defective, then underproof silicon steel blank is proceeded to
Roll off the production line 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, will be through judging that qualified silicon steel blank is transported to blank shove charge through blank roller-way and confirms district, blank shove charge in step 2
Confirm that district confirms whether silicon steel special heating furnace possesses the condition of the direct shove charge of silicon steel blank, if possessing steel loading condition, directly fills
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, the moment is 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
After, silicon steel special heating furnace is filled；Blank shove charge confirms that district confirms that silicon steel special heating furnace does not possess direct shove charge condition, subsequently
Deliver to blank shove charge and confirm that the silicon steel blank in district is then loaded by directly rolling off the production line in the most preheated silicon steel special-purpose thermal insulation hole.Silicon steel
Special-purpose thermal insulation hole is persistently incubated by 400 DEG C of-600 DEG C of heat-retaining conditions during rolling smelted by silicon steel.
Step 4: the blank in rolling common heating furnace: the silicon steel special heating furnace of silicon steel blank will be filled in step 3
Carrying out heating operation, heating-up temperature is 1250 DEG C ~ 1350 DEG C, and heat time heating time is no less than 180min, and milling train now rolls commonly
The Q235B blank of heating furnace.
Step 5: the transition blank in rolling common heating furnace: when 16:40, distance silicon steel blank heating completes also to remain
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 having rolled last block transition blank, silicon steel base
Material heating should meet rolling condition, i.e. silicon steel blank heating temperature at 1250 DEG C ~ 1350 DEG C, and silicon steel preform heating time is
At more than 180min, and start silicon steel blank is carried out block-by-block rolling；Transition blank is because orientation silicon steel hot rolled coil specification relatively
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: the silicon steel blank in rolling silicon steel special heating furnace: when 17:05, it is special that milling train starts to roll silicon steel
The 1st block of silicon steel blank in heating furnace, common heating furnace enters heating and thermal insulation state；Silicon steel special heating furnace often goes out one block of silicon steel
While blank enters rolling sequence, in blank roller-way or silicon steel special-purpose thermal insulation are cheated, supplement one block of silicon steel blank loading silicon steel special
With in heating furnace, it is ensured that fill silicon steel blank in silicon steel special heating furnace all the time, the like, until first silicon steel rolling is single
Unit terminates.
Step 7: the blank in rolling common heating furnace again: milling train is when 17:56 rolls the 14th block of silicon steel, and silicon steel is special
Being unsatisfactory for heating rolling process conditions with 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 also failing to load the silicon steel blank of silicon steel special heating furnace, loading of the most directly rolling off the production line
The insulation of silicon steel special-purpose thermal insulation hole, now milling train starts to roll the Q235B blank of common heating furnace, until waiting until that 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.
Being noted that above-described embodiment is illustrative not limiting to technical solution of the present invention, art is general
The equivalent leading to technical staff or other amendment made according to prior art, as long as beyond technical solution of the present invention
Thinking and scope, within should be included in interest field of the presently claimed invention.
Claims (4)
1. one kind utilizes the method that holding pit and single heating furnace tandem rolling produce hot-rolled orientation silicon steel, it is characterised in that the party
Method comprises the steps:
Step one: the rolling scaduled establishment of silicon steel: when confirming plan number, rolling mode, quantity, specification, stock number and beginning
Between enroll plan；
Step 2: judge that blank is the most qualified: after orientation silicon steel strand cuts off online, be delivered to through blank roller-way by silicon steel blank
It is qualified that online weighing/confirmation/detection/judgement district is made to determine whether, if qualified, proceeds to step 3；Otherwise by underproof silicon
Steel blank proceeds to the storage area that rolls off the production line；
Step 3: determine whether direct shove charge: silicon steel blank qualified in described step 2 is transported to blank shove charge and confirms district,
Described blank shove charge confirms that district confirms that silicon steel special heating furnace possesses steel loading condition and is then directly loadable into described silicon steel special heating furnace；
Otherwise described silicon steel blank is directly rolled off the production line and load in the most preheated silicon steel special-purpose thermal insulation hole；By that analogy；
Step 4: the blank in rolling common heating furnace: after silicon steel special heating furnace described in 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 heat time heating time is many
In 180min, the blank that now milling train utilizes common heating furnace to heat normally rolls；
Step 5: the transition blank in rolling common heating furnace: apart from described step 4 silicon steel special heating furnace heating operation
When completing also to remain 20-30min, according to silicon steel rolling specs requirement, milling train starts to roll the silicon steel transition of described common heating furnace
Blank, and successive optimization rolling model；
Step 6: the silicon steel blank in rolling silicon steel special heating furnace: milling train starts to roll in described step 4 that silicon steel is special to be added
Silicon steel blank in hot stove, described common heating furnace enters heating and thermal insulation state；Described silicon steel special heating furnace often goes out one block of silicon
While steel blank enters rolling sequence, in blank roller-way or silicon steel special-purpose thermal insulation are cheated, supplement one block of silicon steel blank load silicon steel
In special heating furnace, it is ensured that fill silicon steel blank all the time in described silicon steel special heating furnace, the like, until first silicon steel
Rolling unit terminates；
Step 7: the blank in rolling common heating furnace again: the most described first silicon steel rolling unit terminates, and initially enters
Heating and thermal insulation state；If also failing to load the silicon steel blank of described silicon steel special heating furnace, the loading silicon steel that the most directly rolls off the production line is special
It is incubated with holding pit；Now milling train then starts again to roll the blank in described common heating furnace, until waiting until next silicon steel
The arrival of rolling unit；
Step 8: the rolling of silicon steel rolling unit is carried out according to described step 5 to step 7, by that analogy, until silicon steel blank
All rolling terminates.
A kind of side utilizing holding pit and single heating furnace tandem rolling to produce hot-rolled orientation silicon steel the most according to claim 1
Method, it is characterised in that in described step 2, silicon steel special-purpose thermal insulation hole is persistently incubated by 400 DEG C of-600 DEG C of heat-retaining conditions.
A kind of side utilizing holding pit and single heating furnace tandem rolling to produce hot-rolled orientation silicon steel the most according to claim 1
Method, it is characterised in that in described step 4, common heating furnace is provided with no less than 2.
A kind of side utilizing holding pit and single heating furnace tandem rolling to produce hot-rolled orientation silicon steel the most according to claim 1
Method, it is characterised in that the silicon steel in described step one ~ step 8 is orientation silicon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610610322.7A CN106269873B (en) | 2016-07-29 | 2016-07-29 | Utilize the method for holding pit and single heating furnace tandem rolling production hot-rolled orientation silicon steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610610322.7A CN106269873B (en) | 2016-07-29 | 2016-07-29 | Utilize the method for holding pit and single heating furnace tandem rolling production hot-rolled orientation silicon steel |
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| Publication Number | Publication Date |
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| CN106269873A true CN106269873A (en) | 2017-01-04 |
| CN106269873B CN106269873B (en) | 2018-01-05 |
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ID=57662834
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Cited By (4)
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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 |
| CN111020171A (en) * | 2019-12-18 | 2020-04-17 | 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 |
| CN113020283A (en) * | 2021-03-18 | 2021-06-25 | 鞍钢股份有限公司 | Shape control method for oriented silicon steel hot-rolled steel strip |
| CN114309080A (en) * | 2021-11-29 | 2022-04-12 | 邯郸钢铁集团有限责任公司 | Method for judging direct-loading hot-loading on conventional hot continuous rolling production line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114309080A (en) * | 2021-11-29 | 2022-04-12 | 邯郸钢铁集团有限责任公司 | Method for judging direct-loading hot-loading on conventional hot continuous rolling production line |
| 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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| Publication number | Publication date |
|---|---|
| CN106269873B (en) | 2018-01-05 |
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