CN103290170A - A method and a device for obtaining the weight of an alloy in an LF refining furnace - Google Patents
A method and a device for obtaining the weight of an alloy in an LF refining furnace Download PDFInfo
- Publication number
- CN103290170A CN103290170A CN2013102544829A CN201310254482A CN103290170A CN 103290170 A CN103290170 A CN 103290170A CN 2013102544829 A CN2013102544829 A CN 2013102544829A CN 201310254482 A CN201310254482 A CN 201310254482A CN 103290170 A CN103290170 A CN 103290170A
- Authority
- CN
- China
- Prior art keywords
- alloy
- weight
- molten steel
- expression
- add
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The embodiment of the invention provides a method and a device for obtaining the weight of an alloy in an LF refining furnace, applicable to LF refining furnaces. The LF refining furnace includes a steel ladle, and the method comprises: when the steel ladle arrives at the refining position of the LF refining furnace, collecting the current temperature of the molten steel; if the current temperature does not reach the alloy feed temperature of the current smelting steel type, then heating the LF refining furnace until the current temperature reaches the alloy feed temperature; when the current temperature reaches the alloy feed temperature, calculating the element yield in the alloy; obtained the weight of the alloy according to the element yield. According to the method and the device in the embodiment of the invention, the accuracy of an added alloy content can be improved, thus improving the yield and quality in LF refining furnace production.
Description
Technical field
The present invention relates to the automatic control technology field, relate to add in a kind of LF refining furnace acquisition methods and the device of weight alloy in particular.
Background technology
The LF refining is a kind of furnace outer refining technology that utilizes electric-arc heating under vacuum condition.Composition Control in the LF refining process is the key of whole process flow.In process of production, need in molten steel, add the chemical composition content ratio that some alloys are adjusted molten steel, reach the target call of product regulation to guarantee out composition of steel.
At present, domestic a lot of steelworkss all are to control the add-on of alloy by operator according to the experience of oneself, control the content of molten steel interalloy element with this, and the obvious this practice lacks accuracy, is having a strong impact on output and quality that the LF refining furnace is produced.
Summary of the invention
The purpose of the embodiment of the invention is to provide acquisition methods and the device that adds weight alloy in a kind of LF refining furnace, is used for solving the existing low problem of alloy addition method accuracy rate.
Add the acquisition methods of weight alloy in a kind of LF refining furnace, be applied to the LF refining furnace, described LF refining furnace comprises ladle, comprising:
Arrive the refining position of described LF refining furnace when described ladle after, gather the Current Temperatures of molten steel;
If the material alloying temperature value of the current smelting steel grade of described Current Temperatures no show then heats until described Current Temperatures described LF refining furnace and arrives described material alloying temperature value;
After described Current Temperatures arrives described material alloying temperature value, calculate the recovery rate of certain element in the alloy that will add;
Obtain the weight alloy that will add according to described recovery rate.
Preferably, add in above-mentioned LF refining furnace in the acquisition methods of weight alloy, the described recovery rate of calculating certain element in the alloy that will add comprises:
According to formula β=(G
2╳ M
2-G
1╳ M
1) ÷ [(G
2-G
1) ╳ M
h)] calculate the recovery rate of certain element in the alloy that will add;
Wherein,
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
Preferably, add in above-mentioned LF refining furnace in the acquisition methods of weight alloy, the described weight that obtains the alloy that will add according to described recovery rate comprises:
According to formula G
h=(G
2╳ M
2-G
1╳ M
1) ÷ (M
h╳ β) obtains the weight of the alloy that will add;
Wherein,
G
hThe weight alloy that expression will add;
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
Preferably, in above-mentioned LF refining furnace, add in the acquisition methods of weight alloy, also comprise:
To described M
hRevise, with revised M
hBe updated to database.
The embodiment of the invention also discloses the deriving means that adds weight alloy in a kind of LF refining furnace, is applied to the LF refining furnace, and described LF refining furnace comprises ladle, comprising:
Collecting unit is used for gathering the Current Temperatures of molten steel after described ladle arrives the refining position of described LF refining furnace;
Heating unit if be used for the material alloying temperature value of the current smelting steel grade of described Current Temperatures no show, then heat until described Current Temperatures described LF refining furnace and arrives described material alloying temperature value;
The recovery rate computing unit is used for calculating the recovery rate of certain element in the alloy that will add after described Current Temperatures arrives described material alloying temperature value;
The alloy computing unit is for the weight alloy that obtains according to described recovery rate adding.
Preferably, add in the deriving means of weight alloy in above-mentioned LF refining furnace, the recovery rate computing unit comprises:
The recovery rate computing module is used for according to formula β=(G
2╳ M
2-G
1╳ M
1) ÷ [(G
2-G
1) ╳ M
h)] calculate the recovery rate of certain element in the alloy that will add;
Wherein,
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
Preferably, add in the deriving means of weight alloy in above-mentioned LF refining furnace, comprising: the alloy computing module is used for according to formula G
h=(G
2╳ M
2-G
1╳ M
1) ÷ (M
h╳ β) obtains the weight of the alloy that will add;
Wherein,
G
hThe weight alloy that expression will add;
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
Preferably, in above-mentioned LF refining furnace, add in the deriving means of weight alloy, also comprise:
The revision unit is used for described M
hRevise, with revised M
hBe updated to database.
This case is on the basis of process modification, also namely after ladle arrives the LF refining furnace, gather the Current Temperatures data of molten steel, the material alloying temperature value of the current smelting steel grade that compares the molten steel Current Temperatures and set in advance, if the material alloying temperature value of the current smelting steel grade of Current Temperatures no show, then the LF refining furnace is heated until Current Temperatures and arrive the material alloying temperature value, improve by the optimization to LF refining furnace production technique, eliminate the labile factor that influence is calculated, guaranteed the accuracy of calculating; In addition, the method for calculation by the autonomous design research and development take into full account the various model parameters calculated that influence, and utilize reasonable calculation method, calculate the weight that adds alloy accurately, and then can improve output and quality that the LF refining furnace is produced; In addition, the method that the embodiment of the invention provides has realized the full-automatic material alloying of LF refining furnace, has reduced working strength of workers, has reduced mishandle, and then improved output and quality that the LF refining furnace is produced.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
A kind of schematic flow sheet that adds the acquisition methods of weight alloy in the LF refining furnace that Fig. 1 provides for the embodiment of the invention;
A kind of schematic flow sheet that adds the acquisition methods of weight alloy in the LF refining furnace that Fig. 2 provides for the embodiment of the invention;
A kind of data that Fig. 3 provides for the embodiment of the invention are from the schematic flow sheet of modification method;
A kind of structural representation that adds the deriving means of weight alloy in the LF refining furnace that Fig. 4 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 1, the embodiment of the invention provides a kind of acquisition methods of LF refining furnace weight alloy, is applied to the LF refining furnace, and the LF refining furnace comprises ladle, and method comprises:
Step 100: arrive the refining position of LF refining furnace when ladle after, gather the Current Temperatures of molten steel.
The body of heater of LF refining furnace is a ladle, and this ladle suitable for reading has the cold water ring flange, and by lute and bell sealing, to prevent the intrusion of air, ladle bottom has the slide gate nozzle of tapping usefulness and the transparent brick of blown inert gas.
Step 110: if the material alloying temperature value of the current smelting steel grade of Current Temperatures no show then heats until Current Temperatures arrival material alloying temperature value the LF refining furnace.
After ladle arrives the LF refining furnace, gather the Current Temperatures data of molten steel, the material alloying temperature value of the current smelting steel grade that compares the molten steel Current Temperatures and set in advance, if the material alloying temperature value of the current smelting steel grade of Current Temperatures no show then heats until Current Temperatures arrival material alloying temperature value the LF refining furnace.In the LF refining process, the fluctuation of liquid steel temperature is bigger to the element recovery rate influence that joins the molten steel interalloy in the LF refining furnace, therefore, the operation that increase is switched on and heated molten steel, the element recovery rate that can guarantee the alloy that adds remains on a more satisfactory scope, so just can reduce a lot of factors that influence computational accuracy.
Step 120: after the Current Temperatures of molten steel arrives the material alloying temperature value, calculate the recovery rate of certain element in the alloy that will add.
In the LF production process, after adding certain alloy, for example, add high manganeseirom material, its principal element composition is manganese and carbon, and in a collection of high manganeseirom material, the content of manganese and carbon is identical basically, but, after joining in the molten steel, a principal element manganese part vapors away, and a part has been dissolved in the slag, most of parts are stayed in the molten steel, stay part in the molten steel be only receive part, stay the ratio of the content in the high manganeseirom material of part in adding molten steel in the molten steel, be exactly recovery rate, therefore, calculate the weight that will add the high ferromanganese in the molten steel according to the recovery rate of manganese element usually.
Calculate the recovery rate of element in the alloy, can comprise:
According to formula β=(G
2╳ M
2-G
1╳ M
1) ÷ [(G
2-G
1) ╳ M
h)] calculate the recovery rate of element in the alloy;
Wherein,
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
Below introduce the process that obtains of formula β:
Finish the calculating of the recovery rate of certain element in the alloy according to the principle of mass conservation, after in LF refining furnace molten steel, adding alloy, alloy can melt, part alloying element fuses in the slag, another part element just fuses in the molten steel, and some alloy vapors away when the LF refining furnace is smelted, owing to have slag and insulating covering agent to block at molten steel surface, the weight alloy of volatilization is minimum, so this part alloy that vapors away can be ignored fully.Theoretical according to this, the bond quality conservation principle just draws the weight and the weight addition that adds alloy of initial steel water, and obtaining is exactly molten steel target weight behind the alloy melting.The weight alloy that adds can be expressed as:
G
h=G
2-G
1(formula 1)
In the formula:
G
hThe weight alloy that expression will add;
G
1Before expression does not add alloy, the weight of molten steel in the ladle;
G
2Behind the expression alloy melting, the molten steel weight in the ladle.
In like manner, the quality that can derive certain alloying element in the molten steel by the principle of mass conservation also is conservation.That is, the alloy that adds in the molten steel, the weight of fusing into certain alloying element in the molten steel is exactly the difference of this element quality in quality and the initial molten steel of this element in the target molten steel.Can be expressed as:
G
h* M
h* β=G
2* M
2-G
1* M
1(formula 2)
In the formula:
G
hThe weight alloy that expression will add;
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
Therefore, can be derived the calculation formula of element recovery rate by formula 2:
β=(G
2╳ M
2-G
1╳ M
1) ÷ [(G
2-G
1) ╳ M
h)] (formula 3)
Step 130: the weight that obtains alloy according to recovery rate.
The calculating of element recovery rate is finished when obtaining alloy adding temperature, and after obtaining alloy adding temperature, the recovery rate of element has also just been determined to get off simultaneously.
In the production process of reality, a large amount of real data show, in certain temperature range, the recovery rate variation range of element is very little, can think a definite steady state value, so as long as calculated the element recovery rate, in the production process so afterwards, if when conditions such as the steel grade of molten steel, molten steel weight, liquid steel temperature are all consistent, just can use the gravimetric value that this element recovery rate is calculated needs certain alloy of adding.
By optimization improvement, determining of material alloying temperature and the determining of element recovery rate of technology, the factor that will influence model calculating is all got rid of, and next just can finish alloy according to the principle of mass conservation and add Weight Calculation.Obtain the weight of the alloy that will add according to the recovery rate of certain element in the alloy that will add, comprising:
G
h=(G
2* M
2-G
1* M
1) ÷ (M
h* β) (formula 4)
In the formula:
G
hThe weight alloy that expression will add;
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
Can finish the calculating of element recovery rate according to formula 3 in the experimental phase; In the application stage, the element recovery rate has become a constant value, and therefore, alloy adding Weight Calculation can be expressed as the form as formula 4, because above-mentioned G
2, M
2, G
1, M
1, M
h, β determines, adds weight G so can utilize formula 4 to calculate alloy
h
This case is on the basis of process modification, also namely after ladle arrives the LF refining furnace, gather the Current Temperatures data of molten steel, the material alloying temperature value of the current smelting steel grade that compares the molten steel Current Temperatures and set in advance, if the material alloying temperature value of the current smelting steel grade of Current Temperatures no show, then the LF refining furnace is heated until Current Temperatures and arrive the material alloying temperature value, improve by the optimization to LF refining furnace production technique, eliminate the labile factor that influence is calculated, guaranteed the accuracy of calculating; In addition, the method for calculation by the autonomous design research and development take into full account the various model parameters calculated that influence, and utilize reasonable calculation method, calculate the weight that adds alloy accurately, and then can improve output and quality that the LF refining furnace is produced; In addition, the method that the embodiment of the invention provides has realized the full-automatic material alloying of LF refining furnace, has reduced working strength of workers, has reduced mishandle, and then improved output and quality that the LF refining furnace is produced.
Further, take into full account the weight of adding alloy in the embodiment of the invention to the increase of whole molten steel weight, in the reinforced process of traditional LF refining furnace, it has been generally acknowledged that before adding alloy and afterwards, the weight of molten steel is constant, and considered difference between the two in embodiments of the present invention, and so just follow mass conservation law fully, obtain calculation result data more accurately.
In other embodiments of the invention, in order further to improve the accuracy that model calculates, need after calculating is finished, end value be verified, with the factor of the The model calculation of further eliminating the effects of the act.Through conscientious analysis and research, finding needs to consider to join the constituent content per-cent of the alloy in the molten steel this moment, because the alloy of different batches, its constituent content is some deviation all, though constituent content is all controlled in certain scope, this deviation still can directly influence the calculation result of model.Find that through conscientious experiment though constituent content has deviation in the alloy of different batches, in batch the alloy, the content of element is still very stable together, deviation is minimum, can ignore fully.So as long as the percentage composition of element just can be stablized this value in the corrected Calculation alloy, make final calculation result more accurate.
The calculating alloy of introducing adds in the formula of weight in front, has related to the percentage composition M of element in the alloy
h, be to add weight at alloy to calculate and finish because revise to calculate certainly, in molten steel, adding alloy, and after finishing the inspection chemical examination, carrying out, so the percentage calculation of constituent content can be expressed as in the alloy:
M
h=(G
2* M
2-G
1* M
1) ÷ (G
h* β) (formula 5)
Formula 5 is under the situation that other parameter is all determined, calculates constituent content per-cent in the alloy,
In the formula:
G
hThe weight alloy that expression will add;
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
hThe percentage composition of element in the alloy that expression adds;
M
2Constituent content per-cent behind the expression alloy melting in the molten steel;
M
1Expression adds the percentage composition of element in the preceding molten steel of alloy;
β represents the recovery rate of element in the alloy.
M
hCorrected Calculation refer to recomputate the percentage composition of element in the alloy, to stablize this value, make final calculation result more accurate.
Referring to Fig. 2, Fig. 2 shows a kind of acquisition methods of LF refining furnace weight alloy, is applied to the LF refining furnace, and method comprises:
Step 200 reads the data that collect.
The data of gathering can comprise molten steel weight, liquid steel temperature, inspection analysis data, alloying element constituent data etc.
Step 210, whether judgment data reads success, if not, then carry out step 211, otherwise carry out step 212.
Whether step 211 has stored the above-mentioned data that collect in the judgment data storehouse, if then return step 200, otherwise finish.
Step 212 judges whether to calculate the recovery rate of element, if, then carry out step 213, carry out the calculating of element recovery rate, if not, then carry out step 218.
Step 213, the data of being correlated with in the reading database.The data here comprise the constituent data of element in the alloy that is stored in the database.
Step 214, whether whether data relevant in the judgment data storehouse read success, if then carry out step 215-216, if not, then carry out steps 217, continue the judgment data record and exist, if data logging exists, then return step 213, otherwise end task.
Step 215 is calculated the element recovery rate.
The calculating of element recovery rate uses the data in step 200 and the step 213 to finish calculating jointly.
Step 216, checking element recovery rate.
Step 218 judges whether to calculate the adding weight of alloy, if then carry out step 219-220.
Step 219, the reading database related data.
The data here comprise the constituent data of element in the alloying element recovery rate that is stored in the database and the alloy.
Step 220, whether whether judgment data reads success, if carry out step 221-222, if not, then carry out step 223, continue the judgment data record and exist, if data logging exists, then returns step 219, otherwise ends task.
Step 221, the adding weight of calculating alloy.
Adding weight according to the data computation alloy that reads in the step 219.
Step 222, the checking alloy adds gravimetric value.
Step 224 judges whether the value of the recovery rate that obtains or the value that step 222 interalloy adds weight be reasonable in step 216, if then the value of recovery rate or the value of alloy adding weight are write database, otherwise process ends.
When the respective function of calling the core calculations module was carried out data computation, a calling function judgement was carried out in the first trip of core calculations module, if will calculate recovery rate, finished calculating with regard to calling the function that calculates recovery rate so; If will calculate the weight alloy that adds in the molten steel, finish calculating with regard to calling the function that calculates weight alloy so.These two kinds of calculating all need the support of corresponding data in the database, so all can call the data read function in the core calculations module, obtain and calculate required database data.After calculating is finished, need also to verify whether the data of calculating are reasonable, by setting some data filter conditions, realize this function.The element recovery rate calculated of checking and the weight alloy value that will add whether rationally after, available data are write database.
In the different alloys, though some element is very little to the influence of elemental composition in the molten steel, in the reinforced model of traditional LF refining furnace, also these elements are not calculated, but these elements also are the factor of the reinforced calculating of influence really, and facts have proved that these factors are very important.Therefore, in other embodiments of the invention, can all once calculate each alloying element in the alloy, take into full account each element to the influence of molten steel composition.
Referring to Fig. 3, Fig. 3 shows a kind of data from the schematic flow sheet of modification method, and after the LF refining furnace was finished material alloying, model system can be called data automatically and review one's lessons by oneself positive modularity function and calculate.In computation process, to verify at first whether the material alloying data are reasonable and available, and then read the inspection analysis data, smelt target chemical composition content data with the steel grade that reads and compare from database, if data have deviation, and deviation is beyond the scope that allows, just need carry out data calculates from revising, and the percentage registration of constituent content in the new database interalloy more, so that when calculating next time, can call.
Method comprises:
Step 300 receives the data from computing module.
The data here are the material alloying data, comprise adding weight alloy, alloying element constituent data, element recovery rate.
Step 310, verification msg.
Whether checking material alloying data accord with logic.
For example, the alloy of setting adds weight a minimum value, a maximum value, if minimum value is 1Kg, when the adding weight data that calculates during less than 1Kg, system can abandon this calculated value automatically, just adds the weight alloy data by checking so.In like manner, the checking of alloying element constituent data, element recovery rate also is like this.
Step 311 judges whether checking is passed through, if, then carry out step 312, otherwise process ends.
Step 312 reads the data that collect.
The data here comprise molten steel element inspection analysis data.
Step 313 judges whether to read success, if then continue step 315-316, otherwise carry out step 314.
Step 314, whether judgment data exists, if data exist, then returns step 312, otherwise process ends.
Step 315, the steel grade in the reading database are smelted target chemical composition content data.
Step 316 judges whether steel grade smelting target chemical composition content data read success, if then carry out step 318-319, otherwise carry out step 317.
Step 317, whether judgment data exists, if data exist, then returns step 315, otherwise process ends.
Step 318, data comparisons are that the Chemical Composition data in the inspection analysis data of the molten steel element that collects in the step 312 and step 315 database are compared, main comparison be whether the difference of each constituent content in allowed band.
Step 319, whether the data of comparison have deviation in the determining step 318, if having, then carry out step 320-322, otherwise process ends.
Step 320 is revised certainly and is calculated.
Corrected Calculation refers to recomputate the percentage composition of element in the alloy according to the molten steel element inspection analysis data that collects, and to stablize this value, makes final calculation result more accurate.
Step 321 judges whether modified value is reasonable, if unreasonable, then process ends if rationally, then carry out step 322, writes database with record, process ends.
Referring to Fig. 4, the embodiment of the invention provides the deriving means that adds weight alloy in a kind of LF refining furnace, is applied to the LF refining furnace, and described LF refining furnace comprises ladle, and device comprises:
Collecting unit U100 is used for gathering the Current Temperatures of molten steel after described ladle arrives the refining position of described LF refining furnace;
Heating unit U110 if be used for the material alloying temperature value of the current smelting steel grade of described Current Temperatures no show, then heat until described Current Temperatures described LF refining furnace and arrives described material alloying temperature value;
Recovery rate computing unit U120 is used for calculating the recovery rate of certain element in the alloy that will add after described Current Temperatures arrives described material alloying temperature value;
Alloy computing unit U130 is for the weight alloy that obtains according to described recovery rate adding.
The embodiment of the invention provides a kind of deriving means of LF refining furnace weight alloy, after ladle arrives the LF refining furnace, collecting unit is gathered the Current Temperatures data of molten steel, the material alloying temperature value of the current smelting steel grade that compares the molten steel Current Temperatures and set in advance, if the material alloying temperature value of the current smelting steel grade of Current Temperatures no show, heating unit then heats until Current Temperatures arrival material alloying temperature value the LF refining furnace, improve by the optimization to LF refining furnace production technique, eliminate the labile factor that influence is calculated, guaranteed the accuracy of calculating; In addition, recovery rate computing unit and alloy computing unit by the autonomous design research and development take into full account the various model parameters calculated that influence, and utilize reasonable calculation method, calculate the weight that adds alloy accurately, and then can improve output and quality that the LF refining furnace is produced; In addition, the method that the embodiment of the invention provides has realized the full-automatic material alloying of LF refining furnace, has reduced working strength of workers, has reduced mishandle, and then improved output and quality that the LF refining furnace is produced.
In other embodiments of the invention, the recovery rate computing unit comprises:
The recovery rate computing module is used for according to formula β=(G
2╳ M
2-G
1╳ M
1) ÷ [(G
2-G
1) ╳ M
h)] calculate the recovery rate of certain element in the alloy that will add;
Wherein,
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
In other embodiments of the invention, described alloy computing unit comprises: the alloy computing module is used for according to formula G
h=(G
2╳ M
2-G
1╳ M
1) ÷ (M
h╳ β) obtains the weight of the alloy that will add;
Wherein,
G
hThe weight alloy that expression will add;
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
In other embodiments of the invention, also comprise: the revision unit is used for described M
hRevise, with revised M
hBe updated to database.
Each embodiment adopts the mode of going forward one by one to describe in this specification sheets, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
At last, also need to prove, in this article, such as first, second, third and the fourth class relational terms only be used for an entity or operation are made a distinction with another entity or operation, and not necessarily require or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
For the convenience of describing, be divided into various unit with function when describing above the device and describe respectively.Certainly, when implementing the application, can in same or a plurality of softwares and/or hardware, realize the function of each unit.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments herein.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. add the acquisition methods of weight alloy in the LF refining furnace, be applied to the LF refining furnace, described LF refining furnace comprises ladle, it is characterized in that, comprising:
Arrive the refining position of described LF refining furnace when described ladle after, gather the Current Temperatures of molten steel;
If the material alloying temperature value of the current smelting steel grade of described Current Temperatures no show then heats until described Current Temperatures described LF refining furnace and arrives described material alloying temperature value;
After described Current Temperatures arrives described material alloying temperature value, calculate the recovery rate of certain element in the alloy that will add;
Obtain the weight alloy that will add according to described recovery rate.
2. method according to claim 1 is characterized in that, the described recovery rate of calculating certain element in the alloy that will add comprises:
According to formula β=(G
2╳ M
2-G
1╳ M
1) ÷ [(G
2-G
1) ╳ M
h)] calculate the recovery rate of certain element in the alloy that will add;
Wherein,
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
3. method according to claim 2 is characterized in that, the described weight that obtains the alloy that will add according to described recovery rate comprises:
According to formula G
h=(G
2╳ M
2-G
1╳ M
1) ÷ (M
h╳ β) obtains the weight of the alloy that will add;
Wherein,
G
hThe weight alloy that expression will add;
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
4. according to claim 2 or 3 described methods, it is characterized in that, also comprise:
To described M
hRevise, with revised M
hBe updated to database.
5. add the deriving means of weight alloy in the LF refining furnace, be applied to the LF refining furnace, described LF refining furnace comprises ladle, it is characterized in that, comprising:
Collecting unit is used for gathering the Current Temperatures of molten steel after described ladle arrives the refining position of described LF refining furnace;
Heating unit if be used for the material alloying temperature value of the current smelting steel grade of described Current Temperatures no show, then heat until described Current Temperatures described LF refining furnace and arrives described material alloying temperature value;
The recovery rate computing unit is used for calculating the recovery rate of certain element in the alloy that will add after described Current Temperatures arrives described material alloying temperature value;
The alloy computing unit is for the weight alloy that obtains according to described recovery rate adding.
6. device according to claim 5 is characterized in that, the recovery rate computing unit comprises:
The recovery rate computing module is used for according to formula β=(G
2╳ M
2-G
1╳ M
1) ÷ [(G
2-G
1) ╳ M
h)] calculate the recovery rate of certain element in the alloy that will add;
Wherein,
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
7. device according to claim 6 is characterized in that, described alloy computing unit comprises: the alloy computing module is used for according to formula G
h=(G
2╳ M
2-G
1╳ M
1) ÷ (M
h╳ β) obtains the weight of the alloy that will add;
Wherein,
G
hThe weight alloy that expression will add;
G
1Expression does not add the weight of molten steel in the preceding ladle of alloy;
G
2Behind the expression alloy melting, the molten steel weight in the ladle;
M
1Expression adds the percentage composition of certain element in the preceding molten steel of alloy;
M
2The percentage composition of described certain element behind the expression alloy melting in the molten steel;
M
hThe percentage composition of certain element described in the alloy that expression adds;
β represents the recovery rate of certain element described in the alloy.
8. according to claim 6 or 7 described devices, it is characterized in that, also comprise:
The revision unit is used for described M
hRevise, with revised M
hBe updated to database.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254482.9A CN103290170B (en) | 2013-06-24 | 2013-06-24 | Acquisition methods and the device of weight alloy is added in a kind of LF refining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254482.9A CN103290170B (en) | 2013-06-24 | 2013-06-24 | Acquisition methods and the device of weight alloy is added in a kind of LF refining furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103290170A true CN103290170A (en) | 2013-09-11 |
| CN103290170B CN103290170B (en) | 2015-07-29 |
Family
ID=49091696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310254482.9A Expired - Fee Related CN103290170B (en) | 2013-06-24 | 2013-06-24 | Acquisition methods and the device of weight alloy is added in a kind of LF refining furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103290170B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105734199A (en) * | 2016-05-10 | 2016-07-06 | 中南大学 | Electric-arc furnace smelting process alloy yield correcting method based on data analysis |
| CN109086251A (en) * | 2017-06-13 | 2018-12-25 | 上海梅山钢铁股份有限公司 | A kind of method of alloy addition in determining RH furnace refining process |
| CN112094988A (en) * | 2020-09-08 | 2020-12-18 | 北京首钢自动化信息技术有限公司 | RH refining furnace charge control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928808A (en) * | 2009-06-22 | 2010-12-29 | 鞍钢股份有限公司 | Method for determining adding amount of alloy in RH refining process |
-
2013
- 2013-06-24 CN CN201310254482.9A patent/CN103290170B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928808A (en) * | 2009-06-22 | 2010-12-29 | 鞍钢股份有限公司 | Method for determining adding amount of alloy in RH refining process |
Non-Patent Citations (4)
| Title |
|---|
| 吕洋等: "LF炉加料系统的模型设计", 《安徽冶金科技职业学院学报》 * |
| 李晶等: "钢包精炼过程中钢水成分微调及温度预报", 《钢铁研究学报》 * |
| 罗仁辉等: "LF合金加料及终点预测模型的研究", 《特殊钢》 * |
| 阎立懿等: "LF炉钢液成分微调合金计算公式推导与解析", 《北京科技大学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105734199A (en) * | 2016-05-10 | 2016-07-06 | 中南大学 | Electric-arc furnace smelting process alloy yield correcting method based on data analysis |
| CN109086251A (en) * | 2017-06-13 | 2018-12-25 | 上海梅山钢铁股份有限公司 | A kind of method of alloy addition in determining RH furnace refining process |
| CN112094988A (en) * | 2020-09-08 | 2020-12-18 | 北京首钢自动化信息技术有限公司 | RH refining furnace charge control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103290170B (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103642972B (en) | Intelligent optimization control system for tapping temperature of converter | |
| CN103290170A (en) | A method and a device for obtaining the weight of an alloy in an LF refining furnace | |
| CN103439999A (en) | Method for controlling abnormal furnace temperature of blast furnace according to temperature changes of cooling wall | |
| CN105734199A (en) | Electric-arc furnace smelting process alloy yield correcting method based on data analysis | |
| CN110874511B (en) | Intelligent furnace burden ratio calculation method | |
| CN103103309A (en) | Method of supplementarily forecasting steelmaking finishing point of converter | |
| JP2018024935A (en) | Molten iron temperature prediction method, molten iron temperature prediction device, operation method of blast furnace, operation guidance device, molten iron temperature control method and molten iron temperature control device | |
| CN102399933A (en) | Automatic controlling method for converter oxygen lance used for converting low-carbon steel | |
| CN106834593A (en) | A kind of method that RH refining furnace decarbonization process data are determined with reference heats method | |
| CN110322057A (en) | A kind of forecasting system and prediction technique of 100t direct current electric arc furnace tapping carbon component | |
| CN101968318B (en) | Method for automatically controlling power of electric furnace | |
| CN105624425B (en) | A kind of oxygen bottom blowing copper weld pool Intelligent Process Control method | |
| CN104635683A (en) | Complete flow unit productivity allocation control method for metallurgical enterprise | |
| CN104004876B (en) | A kind of converter charging autocontrol method and system | |
| CN103273207A (en) | Press machine body welding deformation eliminating method based on residual stress quantitative analysis | |
| CN106811570B (en) | A kind of smelting process of middle carbon high manganese steel | |
| CN106048416A (en) | Control method for precipitating hardening type martensitic stainless steel delta ferrite | |
| CN102796881B (en) | Method of accurately controlling consumable electrode remainder in electroslag remelting | |
| CN201876149U (en) | Automatic control system for power of electric furnace | |
| CN105803153A (en) | Real-time online monitoring system and method for safety of refectory material of converter lining | |
| CN104060024B (en) | The forecasting procedure of converter real time temperature in a kind of vanadium extraction by converter blowing process | |
| CN107502698A (en) | A kind of automatic Steelmaking method suitable for less-slag melting | |
| CN107164597A (en) | It is a kind of to detect the one-touch automatic method for making steel of converter without furnace gas without sublance | |
| CN101307386B (en) | Process for smelting titan dregs in ore-smelting furnace and device | |
| CN105574317A (en) | Soft-measuring method for melt temperature in oxygen bottom-blown copper smelting process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20190624 |