CN107368646A - A kind of numerical simulation calculation mixes the verification method of steel billet result - Google Patents
A kind of numerical simulation calculation mixes the verification method of steel billet result Download PDFInfo
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- CN107368646A CN107368646A CN201710583420.0A CN201710583420A CN107368646A CN 107368646 A CN107368646 A CN 107368646A CN 201710583420 A CN201710583420 A CN 201710583420A CN 107368646 A CN107368646 A CN 107368646A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F30/20—Design optimisation, verification or simulation
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Abstract
The invention discloses the verification method that a kind of numerical simulation calculation mixes steel billet result, belong to mixed steel billet numerical simulation technology field.Methods described includes：Step 1 numerical simulation calculation；Model and grid division are established according to the drawing of tundish, basic assumption, boundary condition, computation model are determined according to production technology situation, the flow field in tundish is calculated using numerical simulation software, calculate from latter stove ladle pull open when, in crystallizer exit latter stove molten steel with the time change in concentration situation；Step 2 production process samples；Actual production process condition is identical with numerical simulation process condition, and rod iron sample is taken in crystallizer using quartz ampoule and rubber pipette bulb when being pulled open from ladle, and the content of the discrepant element of composition of front and rear two stove molten steel in sample is analyzed using chemical method；Step 3 contrast verification；The result of calculation of the assay that step 2 is materialsed and step 1 numerical simulation is contrasted, so as to verify the result of calculation of numerical simulation.
Description
Technical field
Present invention relates particularly to the verification method that a kind of numerical simulation calculation mixes steel billet result, belong to mixed steel billet numerical simulation
Technical field.
Background technology
Numerical simulation calculation mixes steel billet, is a kind of method commonly used in casting production.For the result of numerical simulation calculation,
It is generally necessary to verify, to ensure the lumber recovery of strand.
The verification method for mixing steel billet result currently for numerical simulation calculation mainly has two classes, and one kind is to use hydraulics mould
The method of plan, i.e., the model of tundish is established according to the method for the principle of similitude, outlet is then detected using the method for tracer
Change in concentration, so as to verify the result of calculation of numerical simulation, it is long, certain poor with the presence of actual production operating mode the cycle to be present in this method
The shortcomings of other；Another kind of is the method that chemical analysis is examined using strand, takes and is sampled at the diverse location of mixed steel billet, inspectionization
Part is studied, so as to verify the result of calculation of numerical simulation, this method has checking cost height, strand loss amount is big, it is follow-up to influence
The shortcomings of production.
The content of the invention
To solve above mentioned problem of the prior art, the present invention provides a kind of checking numerical simulation calculation and mixes steel billet result
Method.
Specifically, methods described includes：
Step 1 numerical simulation calculation
Model and grid division are established according to the drawing of tundish, basic assumption, border are determined according to production technology situation
Condition, computation model, the flow field in tundish is calculated using numerical simulation software, calculate from latter stove ladle pull open when,
In crystallizer exit latter stove molten steel with the time change in concentration situation；
Step 2 production process samples
Actual production process condition is identical with numerical simulation process condition, and quartz ampoule and rubber pipette bulb are used when being pulled open from ladle
Rod iron sample is taken in crystallizer, a sample is taken every 30s, persistently takes certain time；Rod iron sample is exploited, using chemical method point
Analyse the content of the discrepant element of composition of front and rear two stove molten steel in sample；
Step 3 contrast verification
After the assay data dimensionless processing that step 2 is materialsed, the result of calculation with step 1 numerical simulation
Contrasted, so as to verify the result of calculation of numerical simulation.
Further, numerical simulation software is FLUENT in the step 1.
Further, in the step 1 using MIXTURE modules calculate from latter stove ladle pull open when, in crystallizer
The latter stove molten steel in exit with the time change in concentration situation.
Further, the step 2 is specially：Taken when being pulled open from ladle using quartz ampoule and rubber pipette bulb in crystallizer
Rod iron sample, a sample is taken every 30s, continue 15min, rod iron sample is exploited, the silicone content in sample is analyzed using chemical method.
The beneficial effects of the present invention are：Numerical simulation calculation proposed by the present invention mixes the verification method of steel billet result, energy
Enough results with simple effective method accurate validation numerical simulation, so as to reduce the expense of checking test, improve strand into
Material rate.
Brief description of the drawings
Fig. 1 is the comparison diagram that numerical simulation calculation mixes steel billet result and field result of the test in embodiment.
Embodiment
The embodiment of the present invention is illustrated below in conjunction with the accompanying drawings：
Numerical simulation calculation provided by the invention mixes the verification method of steel billet result, and general principle is：
The situation of mixed steel billet is calculated using the method for numerical simulation, model and division are established according to the drawing of tundish first
Grid, basic assumption, boundary condition, computation model etc. are then determined according to production technology situation, using numerical simulation software
FLUENT calculates the flow field in tundish, finally using MIXTURE modules calculate from latter stove ladle pull open when, crystallizing
The latter stove molten steel in device exit with the time change in concentration situation.
In actual production process, when production technology situation is identical with numerical simulation process condition, and front and rear two stoves steel
When a certain elementary composition of water is variant, rod iron sample is taken in crystallizer using quartz ampoule and rubber pipette bulb when being pulled open from ladle, often
A sample is taken every 30s, persistently takes certain time；Rod iron sample is exploited, discrepant element in sample is analyzed using chemical method
Content.
After materialsed assay data dimensionless processing will be tested, carried out pair with the result of calculation of numerical simulation
Than so as to verify the result of calculation of numerical simulation.
Actual verification is carried out with reference to specific production status：
Casting machine is continuous casting of two strands in parallel machine, and casting blank section is 1510mm × 230mm, pulling rate 1.3m/min, using numerical simulation
MIXTURE modules in software FLUENT calculate change in concentration situation of the latter stove molten steel with the time.
When casting machine is continuous casting of two strands in parallel machine, casting blank section is 1510mm × 230mm, pulling rate 1.3m/min, previous stove molten steel
Silicone content be 0.020%, the silicone content of latter stove molten steel is 0.174%, and quartz ampoule and rubber pipette bulb are used when being pulled open from ladle
Rod iron sample is taken in crystallizer, a sample is taken every 30s, continues 15min；Rod iron sample is exploited, is analyzed and tried using chemical method
Silicone content in sample.
After the result dimensionless processing of silicone content, contrasted with the result of calculation of numerical simulation, comparing result such as Fig. 1
Shown, dotted line represents numerical simulation result in Fig. 1, and solid line represents site test results.
The method of the present invention is used to mix the result of steel billet with accurate validation numerical simulation calculation.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of numerical simulation calculation mixes the verification method of steel billet result, it is characterised in that methods described includes：
Step 1 numerical simulation calculation
Model and grid division are established according to the drawing of tundish, according to production technology situation determine basic assumption, boundary condition,
Computation model, the flow field in tundish is calculated using numerical simulation software, calculate from latter stove ladle pull open when, crystallizing
The latter stove molten steel in device exit with the time change in concentration situation；
Step 2 production process samples
Actual production process condition is identical with numerical simulation process condition, is being tied when being pulled open from ladle using quartz ampoule and rubber pipette bulb
Rod iron sample is taken in brilliant device, a sample is taken every 30s, persistently takes certain time；Rod iron sample is exploited, is analyzed and tried using chemical method
The content of the discrepant element of composition of front and rear two stove molten steel in sample；
Step 3 contrast verification
After the assay data dimensionless processing that step 2 is materialsed, carried out with the result of calculation of step 1 numerical simulation
Contrast, so as to verify the result of calculation of numerical simulation.
2. numerical simulation calculation as claimed in claim 1 mixes the verification method of steel billet result, it is characterised in that the step 1
Middle numerical simulation software is FLUENT.
3. numerical simulation calculation as claimed in claim 1 mixes the verification method of steel billet result, it is characterised in that the step 1
It is middle using MIXTURE modules calculate from latter stove ladle pull open when, in crystallizer exit, latter stove molten steel is dense with the time
Spend situation of change.
4. numerical simulation calculation as claimed in claim 1 mixes the verification method of steel billet result, it is characterised in that the step 2
Specially：Rod iron sample is taken in crystallizer using quartz ampoule and rubber pipette bulb when being pulled open from ladle, a sample is taken every 30s, holds
Continuous 15min, rod iron sample is exploited, and the silicone content in sample is analyzed using chemical method.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998892A (en) * | 2020-07-23 | 2020-11-27 | 麦特勒智能科技(张家港)有限公司 | Mixed steel model system based on flow field and concentration field numerical simulation calculation |
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| CN106435134A (en) * | 2016-11-02 | 2017-02-22 | 浙江华赢特钢科技有限公司 | Production technique of silicon steel sheet |
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| CN101658924A (en) * | 2009-09-24 | 2010-03-03 | 东北大学 | Cylindrical continuous-casting tundish |
| CN103279629A (en) * | 2013-06-19 | 2013-09-04 | 天津大学 | Energy utilization rate numerical calculation method of laser deep melting point welding |
| CN103521731A (en) * | 2013-10-16 | 2014-01-22 | 清华大学 | Method for determining tundish outlet concentration through steel ingot multi-tundish concentration-changing continuous pouring |
| CN104384469A (en) * | 2014-12-16 | 2015-03-04 | 东北大学 | Prediction system and method for thickness of initially solidified shell in continuous steel casting crystallizer |
| CN106435134A (en) * | 2016-11-02 | 2017-02-22 | 浙江华赢特钢科技有限公司 | Production technique of silicon steel sheet |
| CN106799481A (en) * | 2016-12-29 | 2017-06-06 | 内蒙古包钢钢联股份有限公司 | The division methods of steel billet are mixed during grade transition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998892A (en) * | 2020-07-23 | 2020-11-27 | 麦特勒智能科技(张家港)有限公司 | Mixed steel model system based on flow field and concentration field numerical simulation calculation |
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