CN107282908A - A kind of optimization method of slab Lower proterozoic group ladle slide gate in billet control - Google Patents
A kind of optimization method of slab Lower proterozoic group ladle slide gate in billet control Download PDFInfo
- Publication number
- CN107282908A CN107282908A CN201710681468.5A CN201710681468A CN107282908A CN 107282908 A CN107282908 A CN 107282908A CN 201710681468 A CN201710681468 A CN 201710681468A CN 107282908 A CN107282908 A CN 107282908A
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- China
- Prior art keywords
- billet
- slide gate
- ladle slide
- mrow
- steel transportation
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
A kind of optimization method of slab Lower proterozoic group ladle slide gate in billet control, belongs to metallurgy conticaster field.When slab caster is cast, the need for big package operation personnel are according to actual steel grade, selection enables this function from control box, when big Baogang's water net weight is less than activation weight, this control method comes into force, system can calculate steel transportation amount now automatically, when Lower proterozoic group is alarmed, system can be according to the difference of steel transportation amount, different time closing is carried out to ladle slide gate in billet, ladle slide gate in billet is turned down, the band quantity of slag of molten steel is set to be less than setting value, after Lower proterozoic group is alarmed or alarmed first more than setting time again, slide gate nozzle is completely closed, so substantially increase the utilization rate of molten steel in casting cycle, reduce production cost.
Description
Technical field
The invention belongs to metallurgy conticaster molded technology field, in particular, providing one kind can be in casting according to big bag
Molten steel net weight and Lower proterozoic group situation, by controlling the lower quantity of slag of ladle slide gate in billet aperture molten steel optimization to realize molten steel maximum utilization
The automated security control system of rate, it is significant for improving molten steel Utilization rate and continuous casting rate.
Background technology
Slab ladle molten steel surplus is always excessively to influence the subject matter of molten steel utilization rate, Lower proterozoic group master in producing
If being designed for high-quality steel grade, whatsoever steel grade can all be made according to Lower proterozoic group signal in actual applications
The mark terminated for this stove, largely causes the reduction of the utilization rate of molten steel and the increase of production cost.In this shape
Under condition, slab Lower proterozoic group ladle slide gate in billet control system can pass through the control of ladle slide gate in billet aperture to the full extent
The lower quantity of slag is reduced, the utilization rate of molten steel and the production cost caused by melting down is improved.
The content of the invention
It is an object of the invention to the band quantity of slag of the molten steel situation reduction molten steel in stable ladle of every heat latter stage, ensureing
The effective rate of utilization of molten steel is improved in the case of slab quality, production cost is saved, and can have according to actual steel grade
This function of the use of selection, practice also demonstrates the feasibility of Lower proterozoic group ladle slide gate in billet control method and it is good
Development space.
Former technique nozzle control method：
Latter stage is poured into a mould in every heat, when Lower proterozoic group signal alarm, no matter what steel grade ladle slide gate in billet all can be certainly
Dynamic to completely close, molten steel surplus is too many, adds the utilization rate of molten steel and recycles cost.
The process step of the invention is as follows：
Before ladle slide gate in billet is automatically controlled, confirm that the control system and Lower proterozoic group system of ladle slide gate in billet are in
Normal condition, the weighing precision of big bag weighing system is within scope, by big package operation case rotary switch by wrapping slip greatly manually
Mouth of a river control model is converted to automatic ladle slide gate in billet control model.
Step 1: after big Baogang's water net weight reaches setting value, automatic ladle slide gate in billet control activation, controller according to
Actual big Baogang's water net weight, by calculation formula set in advance, is calculated, to determine steel transportation amount now；
Described calculation formula set in advance is：
X1 is the average steel transportation amount in a period of time；T1 is the initial time for calculating steel transportation amount；T2 is calculating steel transportation amount
The termination time；Big Baogang's water net weight when W1 is T1, big Baogang's water net weight when W2 is T2；
Step 2: calculating slag in the case of different steel transportation amounts by actual steel transportation amount, the slide gate nozzle time is closed
Calculation formula：
X2 is the steel transportation amount to be adjusted to；T3 is when X1 steel transportation amounts are adjusted to X2 steel transportation amounts slide gate nozzle adjustment needs
Between；T is is completely open to completely close the required shortest time in the case of production from ladle slide gate in billet；X slides for big bag
Maximum steel transportation amount when the mouth of a river is opened completely；K is the proportionality coefficient of ladle slide gate in billet shut-in time；
Step 3: after automatic ladle slide gate in billet controls to activate, first during Lower proterozoic group signal alarm, big bag slides water
Mouthful can persistently be turned down within T3 time, make slag alarm elimination, casting machine continue by now ladle slide gate in billet aperture casting, such as
Fruit slag alarm is not eliminated, then completely closes ladle slide gate in billet；
Step 4: after ladle slide gate in billet reduces in aperture, in casting cycle, ladle slide gate in billet runs into next time
Slag can completely close slag automatically when alarming, and this heat terminates.
This method substantially increases the utilization rate of molten steel in casting cycle, reduces production cost.
Brief description of the drawings
Fig. 1 double fluid slab Lower proterozoic group ladle slide gate in billet control method flow charts.
Embodiment
1. in casting cycle, big Baogang's water net weight is equal to 25 ton hours, and Lower proterozoic group ladle slide gate in billet automatically controls sharp
Living, while W1=25 tons of the big Baogang's water net weight of record now, 0.5 timesharing thereafter, big Baogang's water net weight is W2=21.5 tons,
Steel transportation amount (ton/point) can be calculated by the formula in step 2：X1=7 tons/point；
2. according to steel transportation amount X1=7 tons/point calculated, with the data tested out in practice, ladle slide gate in billet
It is completely open to completely close required shortest time T=4 second, maximum steel transportation amount X when ladle slide gate in billet is opened completely
=15 tons/point, the ladle slide gate in billet shut-in time Proportional coefficient K=0.9, it is necessary to the steel transportation amount being adjusted to be 3 tons/point, pass through
Ladle slide gate in billet needs the time turned down to be T3=0.96 seconds when formula in step 3 can calculate slag alarm；
3. after Lower proterozoic group is activated, when slag is alarmed, ladle slide gate in billet can be turned down 0.96 second automatically, steel transportation amount drop
It is low, if Lower proterozoic group alarm is eliminated, continue to cast, when next Lower proterozoic group is alarmed, ladle slide gate in billet is closed completely
Close, if Lower proterozoic group alarm is not eliminated, ladle slide gate in billet is completely closed, and this heat terminates；
| Molten steel net weight | Slag checks situation | The mouth of a river controls situation | Mouth of a river actuation time | Steel transportation amount |
| >25t | Un-activation | Automatically control | Adjusted in real time according to middle bag net weight | 7t/min |
| =25t | Un-activation | Slag is automatically controlled | 0s | 7t/min |
| <25t and>15t | Un-activation | Calculate steel transportation amount | 0s | 7t/min |
| =15t | Activation | Slag is automatically controlled | 0s | 7t/min |
| <15t | Alarm for the first time | The mouth of a river is turned down automatically | 0.96s | 3t/min |
| <15t | Second of alarm | The mouth of a river is completely closed automatically | More than 4s | 0t/min |
Claims (1)
1. a kind of optimization method of slab Lower proterozoic group ladle slide gate in billet control, it is characterised in that：
Step 1: after big Baogang's water net weight reaches setting value, ladle slide gate in billet automatically controls activation, and controller is according to reality
Big Baogang's water net weight, by calculation formula set in advance, calculated, to determine steel transportation amount now；
Described calculation formula set in advance is：
<mrow>
<mi>X</mi>
<mn>1</mn>
<mo>=</mo>
<mfrac>
<mrow>
<mi>W</mi>
<mn>1</mn>
<mo>-</mo>
<mi>W</mi>
<mn>2</mn>
</mrow>
<mrow>
<mi>T</mi>
<mn>2</mn>
<mo>-</mo>
<mi>T</mi>
<mn>1</mn>
</mrow>
</mfrac>
</mrow>
X1 is the average steel transportation amount in a period of time；T1 is the initial time for calculating steel transportation amount；T2 is the termination for calculating steel transportation amount
Time；Big Baogang's water net weight when W1 is T1, big Baogang's water net weight when W2 is T2；
Step 2: in the case of different steel transportation amounts, Lower proterozoic group closes the Time Calculation formula of ladle slide gate in billet：
<mrow>
<mi>T</mi>
<mn>3</mn>
<mo>=</mo>
<mi>K</mi>
<mo>*</mo>
<mfrac>
<mi>T</mi>
<mi>X</mi>
</mfrac>
<mo>*</mo>
<mrow>
<mo>(</mo>
<mi>X</mi>
<mn>1</mn>
<mo>-</mo>
<mi>X</mi>
<mn>2</mn>
<mo>)</mo>
</mrow>
</mrow>
X2 is the steel transportation amount to be adjusted to；T3 is when X1 steel transportation amounts are adjusted to X2 steel transportation amounts ladle slide gate in billet adjustment needs
Between；T is is completely open to completely close the required shortest time in the case of production from ladle slide gate in billet；X slides for big bag
Maximum steel transportation amount when the mouth of a river is opened completely；K is the proportionality coefficient of ladle slide gate in billet shut-in time；
Step 3: after ladle slide gate in billet automatically controls activation, when Lower proterozoic group signal is alarmed first, ladle slide gate in billet meeting
Persistently turned down within T3 time, until Lower proterozoic group alarm signal is eliminated, casting machine continues by now ladle slide gate in billet aperture
Casting, if slag alarm signal is not being eliminated yet more than setting time, completely closes ladle slide gate in billet；
Step 4: after ladle slide gate in billet is controlled automatically at the activation of Lower proterozoic group alarm signal once, in casting cycle, such as
Fruit Lower proterozoic group signal is alarmed again, and ladle slide gate in billet can be closed directly, and this heat terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710681468.5A CN107282908B (en) | 2017-08-10 | 2017-08-10 | A kind of optimization method of slab Lower proterozoic group ladle slide gate in billet control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710681468.5A CN107282908B (en) | 2017-08-10 | 2017-08-10 | A kind of optimization method of slab Lower proterozoic group ladle slide gate in billet control |
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| Publication Number | Publication Date |
|---|---|
| CN107282908A true CN107282908A (en) | 2017-10-24 |
| CN107282908B CN107282908B (en) | 2019-03-29 |
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| CN201710681468.5A Active CN107282908B (en) | 2017-08-10 | 2017-08-10 | A kind of optimization method of slab Lower proterozoic group ladle slide gate in billet control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931555A (en) * | 2017-11-26 | 2018-04-20 | 秦皇岛首秦金属材料有限公司 | A kind of Con casting ladle based on the alarm of Lower proterozoic group secondary system pours method eventually |
| CN111250672A (en) * | 2018-11-30 | 2020-06-09 | 上海梅山钢铁股份有限公司 | Continuous casting ladle final pouring method based on steel passing amount comparison |
| CN112620602A (en) * | 2020-12-11 | 2021-04-09 | 北京首钢股份有限公司 | Method and device for controlling steel ladle residual steel amount and storage medium |
Citations (5)
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|---|---|---|---|---|
| JPH081295A (en) * | 1994-06-10 | 1996-01-09 | Nippon Steel Corp | Method for pouring molten steel into tundish for continuous casting |
| CN201871705U (en) * | 2010-10-18 | 2011-06-22 | 河北钢铁股份有限公司唐山分公司 | Continuous casting ladle roughing slag automatic control device |
| CN105478701A (en) * | 2015-12-21 | 2016-04-13 | 北京首钢自动化信息技术有限公司 | Automatic pouring stopping control method for double-flow plate blank |
| CN105983673A (en) * | 2015-02-28 | 2016-10-05 | 宝山钢铁股份有限公司 | Continuous casting ladle final casting control system based on ladle discharged slag detection system and process control method |
| CN106180620A (en) * | 2016-08-20 | 2016-12-07 | 北京首钢自动化信息技术有限公司 | A kind of casting machine cast big bag residue molten steel controls optimization method |
-
2017
- 2017-08-10 CN CN201710681468.5A patent/CN107282908B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH081295A (en) * | 1994-06-10 | 1996-01-09 | Nippon Steel Corp | Method for pouring molten steel into tundish for continuous casting |
| CN201871705U (en) * | 2010-10-18 | 2011-06-22 | 河北钢铁股份有限公司唐山分公司 | Continuous casting ladle roughing slag automatic control device |
| CN105983673A (en) * | 2015-02-28 | 2016-10-05 | 宝山钢铁股份有限公司 | Continuous casting ladle final casting control system based on ladle discharged slag detection system and process control method |
| CN105478701A (en) * | 2015-12-21 | 2016-04-13 | 北京首钢自动化信息技术有限公司 | Automatic pouring stopping control method for double-flow plate blank |
| CN106180620A (en) * | 2016-08-20 | 2016-12-07 | 北京首钢自动化信息技术有限公司 | A kind of casting machine cast big bag residue molten steel controls optimization method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931555A (en) * | 2017-11-26 | 2018-04-20 | 秦皇岛首秦金属材料有限公司 | A kind of Con casting ladle based on the alarm of Lower proterozoic group secondary system pours method eventually |
| CN111250672A (en) * | 2018-11-30 | 2020-06-09 | 上海梅山钢铁股份有限公司 | Continuous casting ladle final pouring method based on steel passing amount comparison |
| CN112620602A (en) * | 2020-12-11 | 2021-04-09 | 北京首钢股份有限公司 | Method and device for controlling steel ladle residual steel amount and storage medium |
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| CN107282908B (en) | 2019-03-29 |
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