CN103834764B - The method and apparatus of the oxygen blown automatic control of RH furnace roof rifle - Google Patents
The method and apparatus of the oxygen blown automatic control of RH furnace roof rifle Download PDFInfo
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- CN103834764B CN103834764B CN201410057287.1A CN201410057287A CN103834764B CN 103834764 B CN103834764 B CN 103834764B CN 201410057287 A CN201410057287 A CN 201410057287A CN 103834764 B CN103834764 B CN 103834764B
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Abstract
The invention discloses the method and apparatus of the oxygen blown automatic control of a kind of RH furnace roof rifle, described method comprises: the display interface being provided for the parameter of the oxygen blown operation of input control top rifle to user; User inputs corresponding parameter value according to the prompting of display interface; The parameter value control top rifle inputted based on user performs oxygen blown operation, wherein, when in top rifle oxygen blast process, user modifies to described parameter, and the amendment order of refusal execution parameter, and perform oxygen blown operation based on described parameter continuation control top rifle.Can avoid manually calculating corresponding device operating parameters continually according to the method and apparatus of the oxygen blown automatic control of RH furnace roof rifle of the present invention, and the impact that the molten steel composition eliminated because artificial input error causes and temperature anomaly produce subsequent handling.
Description
Technical field
The invention belongs to RH refining techniques field, specifically, the present invention relates to the method and apparatus of the oxygen blown automatic control of a kind of RH furnace roof rifle.
Background technology
RH refining furnace is a kind of steel secondary refining process unit for the production of high-quality steel.RH refining furnace roof gun apparatus primarily of part compositions such as top rifle lifting device, top gun body, vacuum-sealing passage, rifle storage facilities, the function that this device heats up for pushing up rifle oxygen decarburization and aluminum chemistry under vacuum condition during realizing processing.
Can need to use top rifle to carry out oxygen blast to molten steel injecting oxygen in vacuum chamber according to technique during molten steel vacuum-treat and force decarburization operation, aluminum chemistry intensification operation.Use top rifle to carry out oxygen blast to molten steel injecting oxygen in vacuum chamber during steel treatment and force decarburization operation, aluminum chemistry intensification operation, on the one hand, oxygen blast forces decarburization operation can reduce carbon content composition in the rear molten steel of process, ensure that its carbon content meets steel grade requirement, on the other hand, aluminum chemistry intensification operation can temperature drop loss in effective compensation steel treatment process, guarantees that the liquid steel temperature after processing meets rear operation continuous casting steel machine casting molten steel process requirements.
Before using top rifle injecting oxygen to force decarburization or aluminum chemistry intensification operation to molten steel during molten steel vacuum-treat, the staff of prior art needs to carry out hand computation by operation screen to blowing oxygen quantity needed for top gun gun bit, oxygen flow (that is, unit time blowing oxygen flow velocity), operation, the aluminum chemistry consumption aluminum amount that heats up at Central Control Room.Due to molten steel amount, oxygen decarburization amount, equalising temp (equalising temp is the temperature that molten steel that the redox reaction liberated heat occurred by aluminium and the metal oxide in molten steel causes raises), consume the parameters such as aluminum amount because of different heat and there are differences, thus every heat all needs manually to calculate blowing oxygen quantity, aluminium consumption parameter, because device operating parameters setting corresponding after counting loss or calculating is improper during artificial calculating, easily cause misoperation, cause the strong decarburization of oxygen blast or aluminum chemistry intensification function can not realize technique object.Cause out of control the causing of molten steel carbon composition to change steel on the one hand, cause steel treatment process temperature lose abnormal and have an impact to subsequent handling on the other hand.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the method and apparatus of the oxygen blown automatic control of a kind of RH furnace roof rifle is provided, use the method and device can avoid manually calculating corresponding device operating parameters continually, eliminate the impact that molten steel composition because artificial input error causes and temperature anomaly produce subsequent handling.
According to an aspect of the present invention, provide the method for the oxygen blown automatic control of a kind of RH furnace roof rifle, said method comprising the steps of: the display interface being provided for the parameter of the oxygen blown operation of input control top rifle to user; User inputs corresponding parameter value according to the prompting of display interface; The parameter value control top rifle inputted based on user performs oxygen blown operation, wherein, when in top rifle oxygen blast process, user modifies to described parameter, and the amendment order of refusal execution parameter, and perform oxygen blown operation based on described parameter continuation control top rifle.
Method according to the present invention, described parameter can comprise molten steel target decarburized amount, Metal Weight, top gun gun bit, oxygen flow and molten steel equalising temp.
Method according to the present invention, the span of molten steel target decarburized amount can be 0.01% ~ 0.05%, the span of Metal Weight can be 180t ~ 230t, the span of molten steel equalising temp can be 5 DEG C ~ 40 DEG C, if arbitrary parameter value of user's input beyond the scope corresponding with this parameter, then can point out user to re-enter this parameter value.
Method according to the present invention, can show the parameter value of user's input at top rifle run duration.
Method according to the present invention, can store the parameter value of user's input.
According to a further aspect in the invention, provide the device of the oxygen blown automatic control of a kind of RH furnace roof rifle, described device comprises: display module, is used for the parameter of the oxygen blown operation of input control top rifle to user's prompting; Load module, user inputs corresponding parameter value according to the prompting of display module; Control module, parameter value based on user's input controls top rifle and performs oxygen blown operation, wherein, in top rifle oxygen blast process, when described device receives the amendment that user carried out described parameter by load module, the amendment order of control module refusal execution parameter, and perform oxygen blown operation based on described parameter continuation control top rifle.
Device according to the present invention, described parameter can comprise molten steel target decarburized amount, Metal Weight, top gun gun bit, oxygen flow and molten steel equalising temp.
Device according to the present invention, if arbitrary parameter of user's input is beyond the scope corresponding with this parameter, then user need re-enter this parameter.
Device according to the present invention, described device can also comprise sensing module, for pushing up rifle run duration senses oxygen flow and liquid steel temperature, and be presented on display interface by display module, when the oxygen flow sensed exceedes default oxygen flow threshold value alarm.
Device according to the present invention, described device can also comprise memory module, for storing the parameter of load module input.
According to the method and apparatus of the oxygen blown automatic control of RH furnace roof rifle provided by the invention, by RH stove, to the artificial calculating of use during liquid steel refining, also artificial input parameter control top rifle oxygen blast and/or aluminothermy intensification are advanced through device calculating parameter and automatically control, under the prerequisite substantially not increasing cost, avoid dexterously and manually calculate continually, avoid the impact that molten steel composition because artificial input error causes and temperature anomaly produce subsequent handling simultaneously.
Accompanying drawing explanation
The following description of the exemplary embodiment of carrying out in conjunction with the drawings, these and/or other aspect of the present invention and advantage will become clear and be easier to understand, wherein:
Fig. 1 shows the block diagram of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention;
Fig. 2 shows the top rifle decarburization parameter list of the display interface display of the indicating meter of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention;
Fig. 3 shows the top rifle aluminum chemistry intensification parameter list of the display interface display of the indicating meter of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention;
Fig. 4 shows the top rifle oxygen decarburization operation interface of the display interface display of the indicating meter of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention;
Fig. 5 shows the aluminum chemistry warming temperature interface of the display interface display of the indicating meter of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention;
Fig. 6 shows the schema of the oxygen blown autocontrol method of RH furnace roof rifle according to exemplary embodiment of the present invention.
Embodiment
Describe the method and apparatus of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention below with reference to accompanying drawings in detail.
Fig. 1 shows the block diagram of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention, Fig. 2 shows the top rifle decarburization oxygen blast parameter list of the display interface display of the indicating meter of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention, Fig. 3 shows the top rifle aluminothermy intensification oxygen blast parameter list of the display interface display of the indicating meter of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention, Fig. 4 shows the top rifle decarburization oxygen blast operation interface of the display interface display of the indicating meter of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention, Fig. 5 shows the aluminothermy intensification oxygen blast operation interface of the display interface display of the indicating meter of the device of the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention.The device of the oxygen blown automatic control of RH furnace roof rifle will described in detail according to Fig. 1 ~ Fig. 5 according to exemplary embodiment of the present invention below.
Display module 101, load module 102 and control module 103 can be comprised as shown in Figure 1 according to the device of the oxygen blown automatic control of RH furnace roof rifle of the present invention.
The display interface of the parameter of the operation that display module 101 can provide the rifle oxygen blast of input control top and aluminothermy to heat up to user.According to one exemplary embodiment of the present invention, described display interface can comprise the rifle decarburization oxygen blast parameter list interface, top shown in Fig. 2, the rifle aluminothermy intensification oxygen blast parameter list interface, top shown in Fig. 3, the top rifle decarburization oxygen blast operation interface shown in Fig. 4, the aluminothermy intensification oxygen blast operation interface shown in Fig. 5.Wherein, display module 101 shows each interface by indicating meter, and the above-mentioned interface that indicating meter shows can be simultaneously displayed on same display interface.
According to exemplary embodiment of the present invention, preferably, at least one group of top gun gun bit and oxygen flow is shown in rifle decarburization oxygen blast parameter list interface, the top (as shown in Figure 2) shown in display module 101 and the same interface in top rifle aluminothermy intensification oxygen blast parameter list interface (as shown in Figure 3), and being pre-set in the display interface of display module 101 correspondingly, user can select according to the described at least one group of top gun gun bit be set in advance in display module 101 and oxygen flow.Such as, rifle decarburization oxygen blast parameter list interface, top in display module 101 shows three groups of identical top gun gun bits and oxygen flow with on the same interface in rifle aluminothermy intensification oxygen blast parameter list interface, top, wherein, oxygen flow corresponding when top gun gun bit is 400cm is 1500Nm
3/ h, oxygen flow corresponding when top gun gun bit is 410cm is 1700Nm
3/ h, oxygen flow corresponding when top gun gun bit is 420cm is 1800Nm
3/ h, user can select one group of top gun gun bit of needs and oxygen flow to control to push up rifle by load module 102 and perform oxygen blown operation.
User can input corresponding parameter value according to display module 101 by load module 102, wherein, described parameter comprises the molten steel target decarburized amount (difference of molten steel initial carbonaceous amount and terminal carbon content, by weight percentage, %), Metal Weight (t), top gun gun bit (cm), oxygen flow (Nm
3/ h), molten steel equalising temp (compensate the molten steel temperature of losing in HR stove refining process, DEG C).User can be 0.01% ~ 0.05% by the span of the molten steel target decarburized amount that load module 102 inputs, the span of the Metal Weight that user is inputted by load module 102 can be 180t ~ 230t, and the span of the molten steel equalising temp that user is inputted by load module 102 can be 5 DEG C ~ 40 DEG C.If arbitrary parameter that user is inputted by load module 102 beyond scope corresponding to this parameter, then rejects this parameter.Preferably, when arbitrary parameter that user is inputted by load module 102 is beyond the scope that this parameter is corresponding, can also to user's display reminding information, described information can comprise scope corresponding to this parameter value, re-enters the described parameter in above-mentioned scope to point out user.
According to exemplary embodiment of the present invention, preferably, identical parameters in the different interfaces that display module 101 shows is interrelated, and such as, in top rifle decarburization oxygen blast parameter list interface (as shown in Figure 2), load module 102 receives the top gun gun bit of user's input be 410cm and oxygen flow is 1700Nm
3one group of parameter of/h, load module 102 can, using the parameter of this group parameter as user's input in top rifle aluminothermy intensification oxygen blast parameter list interface (as shown in Figure 3), can avoid same parameter repeatedly to input so simultaneously.But the present invention is not limited to this, that is, the identical parameters in different display interface can separately input.
According to exemplary embodiment of the present invention, molten steel does not have external source to heat molten steel in RH stove refining process, for avoiding the impact of liquid steel temperature reduction on subsequent technique, can by adding aluminium and carry out top rifle oxygen blast operation in molten steel in RH stove refining process, promote the metal oxide generation redox reaction in aluminium and molten steel, redox reaction liberated heat can compensate the reduction of molten steel temperature in refining process.
RH refining process carries out decarburization mainly through oxygen blast, in prior art to blowing oxygen quantity in oxygen decarburization process really normal root calculate according to formula 1:
Formula 1:Q1(Nm
3)=1.2(Nm
3/ kg) × △ C% × molten steel amount (t) × 1000.
In equation 1, Q1 is the blowing oxygen quantity in oxygen decarburization process, and △ C% is target decarburized amount, namely the difference of carbon content in carbon mass fraction and initial molten steel in endpoint molten steel, and wherein, in molten steel, carbon content by weight percentage.
In RH stove refining process, molten steel can produce temperature loss, and this temperature loss can bring impact to the RH stove refining of molten steel and later processing operation.Therefore, aluminium can be added and use top rifle to oxygen blast in molten steel in RH stove refining process in molten steel, the heat discharged by the redox reaction of oxide compound in aluminium and molten steel carries out temperature compensation to molten steel, and the top rifle blowing oxygen quantity in aluminium add-on and aluminothermy temperature-rise period calculates according to formula 2 and formula 3:
Formula 2:m(kg)=0.032(kgAl/t
steeldEG C) × molten steel amount (t) × △ T(DEG C),
Formula 3:Q2(Nm
3)=0.7(Nm
3/ kg) × m(kg).
In formula 2 and formula 3, the add-on of the aluminium of m needed for aluminothermy intensification; △ T is equalising temp, and this equalising temp provides thermal source for molten steel, thus ensures effectively carrying out of RH refining and later processing operation; Q2 is the top rifle blowing oxygen quantity in aluminothermy temperature-rise period.
The parameter that control module 103 is inputted by load module 102 based on user also calculates molten steel decarburization blowing oxygen quantity according to formula 1, and calculating the top rifle blowing oxygen quantity in the required aluminium add-on of aluminothermy intensification and aluminothermy temperature-rise period according to formula 2 and formula 3, operation and the control feeding machine of the oxygen decarburization of control top rifle execution simultaneously perform hello aluminium material operation in molten steel.If during the rifle oxygen blast of top, user inputs the amendment order to parameter by load module 102, then control module 103 refuses the amendment order performing this parameter, and continues to control the operation that top rifle performs oxygen decarburization by the parameter that load module 102 inputs based on load module 102 user before top rifle runs.Therefore, control top rifle in control module 103 and perform in the process of oxygen decarburization operation, avoid and manually calculate continually, avoid the carbon content of molten steel caused due to artificial input error abnormal simultaneously.
According to exemplary embodiment of the present invention, control module 103 can calculate the top rifle oxygen decarburization time according to user by the oxygen flow that load module 102 inputs, and control top rifle carries out timing oxygen blast, the molten steel composition change that manual operation oxygen gun blowing can be avoided like this to cause.
According to exemplary embodiment of the present invention, the oxygen flow that control module 103 can be inputted by load module 102 according to user and aluminothermy intensification blowing oxygen quantity calculate the top rifle oxygen blow duration in aluminothermy temperature-rise period, and control top rifle carries out timing oxygen blast, the molten steel composition that manual operation oxygen gun blowing can be avoided like this to cause and the change of liquid steel temperature.
In addition, the device according to the oxygen blown automatic control of RH furnace roof rifle of the present invention can also comprise sensing module, for the oxygen flow at rifle run duration sensing top, top rifle.
Device according to the oxygen blown automatic control of RH furnace roof rifle of the present invention can also comprise memory module, for storing the parameter of client's input that load module 102 receives.
In addition, device according to the oxygen blown automatic control of RH furnace roof rifle of the present invention can also comprise warning howler, at run duration, when the oxygen flow of the top rifle sensed exceedes the oxygen flow that user inputs to load module 102, receive signal that control module 103 sends and report to the police.
Fig. 6 shows the schema of the method for the oxygen blown automatic control of RH furnace roof rifle according to exemplary embodiment of the present invention.
In step 301, display interface is used for the bound of parameter face of the oxygen blown operation of input control top rifle to user's prompting, wherein, display interface comprises the rifle decarburization oxygen blast parameter list interface, top of Fig. 2, the rifle aluminothermy intensification oxygen blast parameter list interface, top of Fig. 3, the top rifle decarburization oxygen blast operation interface of Fig. 4, the aluminothermy intensification oxygen blast operation interface of Fig. 5.Wherein, each interface is shown by indicating meter, and the above-mentioned interface that indicating meter shows can be simultaneously displayed on same display interface.
According to exemplary embodiment of the present invention, preferably, in the rifle aluminothermy intensification oxygen blast parameter list interface, top of the rifle decarburization oxygen blast parameter list interface, top of Fig. 2 and Fig. 3, at least one group of top gun gun bit and oxygen flow is shown in same interface, and be pre-set at correspondingly in display interface, user can select according at least one group of top gun gun bit be set in advance in display interface and oxygen flow.Such as, same interface display three groups of top gun gun bits of display interface and oxygen flow, wherein, oxygen flow corresponding when top gun gun bit is 400cm is 1500Nm
3/ h, oxygen flow corresponding when top gun gun bit is 410cm is 1700Nm
3/ h, oxygen flow corresponding when top gun gun bit is 420cm is 1800Nm
3/ h, user can select one group of top gun gun bit of needs and oxygen flow to control to push up rifle and perform oxygen blown operation.In step S302, user can input corresponding parameter value according to the prompting at interface, and wherein, parameter comprises the molten steel target decarburized amount (difference of molten steel initial carbonaceous amount and terminal carbon content, by weight percentage, %), Metal Weight (t), top gun gun bit (cm), oxygen flow (Nm
3/ h), molten steel equalising temp (compensate the molten steel temperature of losing in HR stove refining process, DEG C).User can be 0.01% ~ 0.05% by the span of the molten steel target decarburized amount that load module 102 inputs, the span of the Metal Weight that user is inputted by load module 102 can be 180t ~ 230t, and the span of the molten steel equalising temp of user's input can be 5 DEG C ~ 40 DEG C.If arbitrary parameter of user's input is beyond scope corresponding to this parameter, then reject this parameter, preferably, when arbitrary parameter of user's input is beyond the scope that this parameter is corresponding, can also to user's display reminding information, described information can comprise scope corresponding to this parameter value, re-enters the described parameter in above-mentioned scope to point out user.
According to exemplary embodiment of the present invention, preferably, identical parameters in the different interfaces of display interface is interrelated, and such as, in top rifle decarburization oxygen blast parameter list interface (as shown in Figure 2), load module 102 receives the top gun gun bit of user's input be 410cm and oxygen flow is 1700Nm
3one group of parameter of/h, load module 102 can, using the parameter of this group parameter as user's input in top rifle aluminothermy intensification oxygen blast parameter list interface (as shown in Figure 3), can avoid same parameter repeatedly to input so simultaneously.But the present invention is not limited to this, that is, the identical parameters in different interface also can separately input.
In step S303, calculate molten steel decarburization blowing oxygen quantity based on user by the parameter value of input, top rifle blowing oxygen quantity that aluminothermy heats up in required aluminium add-on and aluminothermy temperature-rise period, control top rifle simultaneously and perform the operation of oxygen decarburization and control feeding machine and perform feed the operation of aluminium material in molten steel.If during the rifle oxygen blast of top, the amendment order of user's input to parameter, then refusal performs the amendment order of this parameter, and continues to control the operation that top rifle performs oxygen decarburization according to the parameter of user's input before the rifle oxygen blast of top.Therefore, the parameter value based on user's input controls top rifle and performs in the process of oxygen decarburization operation, avoids and manually calculates continually, avoids the carbon content of molten steel caused due to artificial input error abnormal simultaneously.
According to exemplary embodiment of the present invention, the top rifle oxygen decarburization time can be calculated according to the oxygen flow of user's input, and control top rifle carries out timing oxygen blast, the molten steel composition change that manual operation oxygen gun blowing can be avoided like this to cause.
According to exemplary embodiment of the present invention, the top rifle oxygen blow duration in aluminothermy temperature-rise period can be calculated according to the oxygen flow of user's input and aluminothermy intensification blowing oxygen quantity, and control top rifle carries out timing oxygen blast, the molten steel composition that manual operation oxygen gun blowing can be avoided like this to cause and the change of temperature.
In addition, method according to the oxygen blown automatic control of RH furnace roof rifle of the present invention can also comprise, at the oxygen flow of rifle run duration sensing top, top rifle, and the oxygen flow that sensing module can be sensed compares with the threshold value of this parameter preset, and when comparative result is the first result (exceeding threshold value) alarm, and proceed normal running when comparative result is the second result (being no more than threshold value).
In addition, the parameter of pushing up rifle run duration display interface and showing parameter and the user's input sensed can also be included according to the method for the oxygen blown automatic control of RH furnace roof rifle of the present invention.
As mentioned above, according to the method and apparatus of the oxygen blown automatic control of RH furnace roof rifle of the present invention, the state modulator using top rifle to carry out oxygen decarburization and the intensification of oxygen blast aluminothermy during RH stove oxygen decarburization and between aluminothermy temperature raising period is changed into parameter input device calculation control by artificial calculating continually, when substantially not increasing cost, decrease the artificial calculating in top rifle oxygen decarburization and top rifle oxygen blast aluminothermy temperature-rise period dexterously and input the operation of relevant parameter, avoid the molten steel composition fluctuation because counting loss and parameters input mistake cause simultaneously, the generation of the phenomenon that liquid steel temperature is unbalance and the quantity of slag increases.
Claims (8)
1. a method for the oxygen blown automatic control of RH furnace roof rifle, said method comprising the steps of:
Be provided for the display interface of the parameter of the oxygen blown operation of input control top rifle to user, wherein, described parameter comprises molten steel target decarburized amount, Metal Weight, top gun gun bit, oxygen flow and molten steel equalising temp;
User inputs corresponding parameter value according to the prompting of display interface;
The parameter value inputted based on user also calculates molten steel decarburization blowing oxygen quantity according to formula 1, and calculate the top rifle blowing oxygen quantity in the required aluminium add-on of aluminothermy intensification and aluminothermy temperature-rise period according to formula 2 and formula 3, control top rifle to perform oxygen blown operation and control feeding machine execution hello aluminium material operation in molten steel simultaneously
Formula 1:
Q1=1.2 × △ C% × Metal Weight × 1000,
Formula 2:
M=0.032 × Metal Weight × △ T,
Formula 3:
Q2＝0.7×m，
In formula 1, formula 2 and formula 3, Q1 is the blowing oxygen quantity in oxygen decarburization process, and unit is Nm
3; △ C% is target decarburized amount; 1.2 unit be Nm
3/ kg; The unit of Metal Weight is t; The add-on of the aluminium of m needed for aluminothermy intensification, unit is kg; △ T is molten steel equalising temp, and unit is DEG C; Q2 is the top rifle blowing oxygen quantity in aluminothermy temperature-rise period, and unit is Nm
3; The unit of 0.032 is kgAl/t
steeldEG C; The unit of 0.7 is Nm
3/ kg;
Wherein, when in top rifle oxygen blast process, user modifies to described parameter, the amendment order of refusal execution parameter, and perform oxygen blown operation based on described parameter continuation control top rifle.
If arbitrary parameter value of 2. the method for claim 1, wherein user's input is beyond the scope corresponding with this parameter, then user is pointed out to re-enter this parameter value.
3. the method for claim 1, wherein at the parameter value of top rifle run duration display user input.
4. the method for claim 1, wherein store the parameter value of user's input.
5. a device for the oxygen blown automatic control of RH furnace roof rifle, described device comprises:
Display module, be used for the parameter of the oxygen blown operation of input control top rifle to user's prompting, wherein, described parameter comprises molten steel target decarburized amount, Metal Weight, top gun gun bit, oxygen flow and molten steel equalising temp;
Load module, user inputs corresponding parameter value according to the prompting of display module;
Control module, the parameter value inputted based on user also calculates molten steel decarburization blowing oxygen quantity according to formula 1, and calculate the top rifle blowing oxygen quantity in the required aluminium add-on of aluminothermy intensification and aluminothermy temperature-rise period according to formula 2 and formula 3, control top rifle to perform oxygen blown operation and control feeding machine execution hello aluminium material operation in molten steel simultaneously
Formula 1:
Q1=1.2 × △ C% × Metal Weight × 1000,
Formula 2:
M=0.032 × Metal Weight × △ T,
Formula 3:
Q2＝0.7×m，
In formula 1, formula 2 and formula 3, Q1 is the blowing oxygen quantity in oxygen decarburization process, and unit is Nm
3; △ C% is target decarburized amount; 1.2 unit be Nm
3/ kg; The unit of Metal Weight is t; The add-on of the aluminium of m needed for aluminothermy intensification, unit is kg; △ T is molten steel equalising temp, and unit is DEG C; Q2 is the top rifle blowing oxygen quantity in aluminothermy temperature-rise period, and unit is Nm
3; The unit of 0.032 is kgAl/t
steeldEG C; The unit of 0.7 is Nm
3/ kg;
Wherein, in top rifle oxygen blast process, when described device receives the amendment that user carried out described parameter by load module, the amendment order of control module refusal execution parameter, and continue to control top rifle based on described parameter and perform oxygen blown operation.
6. device as claimed in claim 5, wherein, if arbitrary parameter of user's input is beyond the scope corresponding with this parameter, then user need re-enter this parameter.
7. device as claimed in claim 5, wherein, described device also comprises sensing module, for pushing up rifle run duration senses oxygen flow and liquid steel temperature, and be presented on display interface by display module, when the oxygen flow sensed exceedes default oxygen flow threshold value alarm.
8. device as claimed in claim 5, wherein, described device also comprises memory module, for storing the parameter of load module input.
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|---|---|---|---|---|
| CN202158786U (en) * | 2011-07-21 | 2012-03-07 | 苏州市新虞仪表成套设备有限公司 | Oxygen blast chronograph |
| CN102758052A (en) * | 2012-07-10 | 2012-10-31 | 北京首钢自动化信息技术有限公司 | Control method for RH vacuum processing mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202158786U (en) * | 2011-07-21 | 2012-03-07 | 苏州市新虞仪表成套设备有限公司 | Oxygen blast chronograph |
| CN102758052A (en) * | 2012-07-10 | 2012-10-31 | 北京首钢自动化信息技术有限公司 | Control method for RH vacuum processing mode |
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