CN102430725A - Pouring speed indicating method and device for steel die casting - Google Patents
Pouring speed indicating method and device for steel die casting Download PDFInfo
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- CN102430725A CN102430725A CN2011104444987A CN201110444498A CN102430725A CN 102430725 A CN102430725 A CN 102430725A CN 2011104444987 A CN2011104444987 A CN 2011104444987A CN 201110444498 A CN201110444498 A CN 201110444498A CN 102430725 A CN102430725 A CN 102430725A
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Abstract
The invention provides a pouring speed indicating method and device for steel die casting, used for indicating the pouring speed of molten steel flowing out from a water gap of a steel ladle in a die casting process. The pouring speed indicating device for the steel die casting comprises a pouring car, an electronic weigher, a data processor and a display device, wherein the pouring car is used for carrying the steel ladle to be poured; the electronic weigher is arranged at a position, for bearing the weight of the steel ladle, on the pouring car, and can be used for weighing the steel ladle in real time so as to measure data, which change along with the time in a pouring process, of the gross weight of the steel ladle; the data processor is used for working out the pouring speed according to the data, which change along with the time and are from the electronic weigher, of the gross weight of the steel ladle; and the display device is used for displaying the pouring speed worked-out by the data processor. By adopting the pouring speed indicating device for the steel die casting, disclosed by the invention, the pouring speed can be more accurately controlled, the experience-based operation is no longer needed, the accuracy and stability in controlling a pouring process are enhanced, and the influences of human factors are eliminated.
Description
Technical field
The present invention relates to a kind of steel poring rate indicating means and steel poring rate indicating device, fast indicating means is annotated in the punching block that uses in the die casting production process in particularly a kind of field of metal casting technology casting and fast indicating device is annotated in the punching block casting.
Background technology
The molten steel poring rate is a significant process parameter of die casting production process, directly affect steel ingot in external quality.Poring rate is too fast, and steel ingot is inner to produce serious shrinkage cavity, segregation defective with making, and covering slag has little time fusing, causes lack of lubrication, and Ingot Surface Quality is poor; Poring rate is slow excessively, will make the duration of pouring long, and the molten steel inspiratory duration also prolongs, increase in the steel gas be mingled with, the most serious is that temperature is low excessively causes molten steel to water to come out; Stable poring rate can guarantee that molten steel steadily rises in ingot mould, make that ingot casting surface and internal soundness are all good.
Because the cast molten steel temperature is mostly about 1500 ℃ of temperature; Approach setting temperature, its mobile variation, and big with the ambient temperature gradient; Heat scatters and disappears fast and is frozen into solid very soon; Lose flowability, it is impossible adopting the mode of traditional measurement liquid or gas flow rates to measure at 1490 ℃ of steel flow velocity degree more than the temperature, therefore has only the speed (abbreviate as in this application and annotate speed) that adopts indirect method to measure the high-temperature molten steel casting process.Existing molten steel is annotated speed control method and is relied on the operating experience of watering the steel workman fully; They rely on and observe steel stream, observe in the mould molten steel rising and wait and rule of thumb judge the speed of annotating speed in steel pouring process; Write down cast ingot body and total rise time of cap mouth with stopwatch at last; Rough judgement poring rate is though the method is simple, not enough below existing:
1, this control is annotated fast method and is mainly leaned on experience, influenced greatly by human factor, after personnel's change will be arranged certain stage of fumbling, and different people's summing up experience is different, and therefore the accuracy of this control method and stability are poor.
2, write down total casting time,,, can't write down or calculate instantaneous velocity in the casting cycle, therefore can't provide the required process of process modification to annotate speed because Sheng molten steel bucket and ingot casting all are variable cross-sections by calculating Mean Speed.
3, operator's steel that in casting process, must detect by an unaided eye flows and judges the speed of annotating speed; Must strengthen the lower edge space of protection casting cover, increase the air-breathing risk of high-temperature molten steel like this, reduce protection cast effect; And the flue gas increase of oxidation generation, worsened working environment.
4, the operator observes molten steel rising in the mould, must climb on the ingot mould top and see, and no load-bearing cover plate is gone up on the ingot mould top, and be the above steel of 1450 ℃ of temperature in the mould, so the very big potential safety hazard of existence.
5, the operator observes steel flow velocity degree, stares at high-temperature steel stream for a long time and sees, then high-temperature molten steel is launched the very strong IR human eye of then burning.
Summary of the invention
That is, when flowing out from the ladle bottom mouth of a river process that constantly changes in view of steel stream, the basic survey of conventional artificial experience control method does not go out process beam speed, and the data support of science can't be provided for technology controlling and process and improvement.The molten steel poring rate is stable to be controlled in the scope of regulation in order to make, and is used for instructing producing and the optimization casting process, must carry out digitlization to this parameter of process notes speed and show.
The objective of the invention is to overcome above-mentioned technical problem, provide a kind of and can the real-time tracking indication annotate method and the instrument that speed changes, make the technical staff can obtain the notes speed in the molten steel casting process, for industrial analysis provides needed technological parameter.
A side of the present invention provides a kind of punching block casting to annotate fast indicating device, is used for indicating the poring rate of die casting process from the molten steel of the mouth of a river outflow of steel ladle, and this indicating device comprises: the casting car is used for carrying and puts the steel ladle that will pour into a mould; The electronic scale treasure is arranged on the position of bearing said molten steel ladle weight on the said casting car, can weigh in real time to the weight of steel ladle, the gross weight that records steel ladle in casting process along with the change of time data; Data processor, according to from the steel ladle gross weight of said electronic scale treasure along with the change of time data computation goes out poring rate; And display, show the poring rate that said data processor calculates.
Annotate in the fast indicating device in above-mentioned punching block casting, preferred: said electronic scale treasure is arranged at the gudgeon position contacting of said casting car and said steel ladle.
Annotate in the fast indicating device in above-mentioned punching block casting, preferred: said electronic scale treasure is built-in with data transmission module, and said data transmission module sends said delta data to said data processor through wireless or wired mode.
Annotate in the fast indicating device in above-mentioned punching block casting, preferably also comprise: memory, the result of calculation of said electronic scale treasure data measured and said data processor is stored.
Annotate in the fast indicating device in above-mentioned punching block casting; Preferably: the gross weight sample frequency that said electronic scale treasure is measured said delta data is provided with through said display, and the notes speed display frequency that said display adopts when showing said poring rate is identical or different with the said gross weight sample frequency of said electronic scale treasure.
Annotate in the fast indicating device in above-mentioned punching block casting, preferred: said electronic scale treasure is a LOAD CELLS, and said data processor is a programmable logic controller (PLC).
Annotate in the fast indicating device in above-mentioned punching block casting; Preferably also be provided with: alarm; When the said poring rate from said data processor is lower than the lower critical value or is higher than critical value, report to the police, said upper and lower critical value can be provided with through said display.
Another aspect of the present invention provides a kind of punching block casting to annotate fast indicating means; Be used for indicating the poring rate of die casting process from the molten steel of the mouth of a river outflow of steel ladle; This indicating means comprises following step: lay step, the steel ladle that will pour into a mould is placed into the casting car; The step of weighing is utilized in the set electronic scale treasure in position that bears said molten steel ladle weight on the said casting car, and the weight of steel ladle is weighed in real time, the gross weight that records steel ladle in casting process along with the change of time data; Calculation procedure, utilize data processor according to from the steel ladle gross weight of said electronic scale treasure along with the change of time data computation goes out poring rate; And step display, the poring rate that said data processor calculated is presented on the display.
Annotate fast indicating means in above-mentioned punching block casting, preferred: said electronic scale treasure is arranged on the gudgeon position contacting place of said casting car and said steel ladle.
Annotate fast indicating means in above-mentioned punching block casting, preferred: said electronic scale treasure sends said delta data to said data processor through wireless or wired mode.
Annotate fast indicating means in above-mentioned punching block casting, preferably behind said step display, also comprise: storing step, the result of calculation of said electronic scale treasure data measured and said data processor is stored.
Annotate fast indicating means in above-mentioned punching block casting; Preferably: said electronic scale treasure is measured said delta data with the gross weight sample frequency of regulation; Said gross weight sample frequency is provided with through said display, and the notes speed display frequency that said display adopts when showing said poring rate is identical or different with the said gross weight sample frequency of said electronic scale treasure.
Annotate fast indicating means in above-mentioned punching block casting, preferred: said electronic scale treasure is a LOAD CELLS, and said data processor is a programmable logic controller (PLC).
Annotate fast indicating means in above-mentioned punching block casting; Preferably also be provided with: alert step; When the said poring rate from said data processor is lower than the lower critical value or is higher than critical value, report to the police, said upper and lower critical value can be provided with through said display.
Beneficial effect of the present invention
Adopt the fast indicating means of notes of the present invention and annotate fast indicating device, solved the existing problems of judging that rule of thumb the fast method of notes exists, the technique effect below having obtained
A, can show the poring rate of casting process intuitively; But the poring rate of continuous monitoring casting process changes; And can save historical data, be convenient to later analysis and sum up improvement (promptly preserving the cast data) so that review, analyze the casting quality in the future, do not need rule of thumb to operate; The accuracy and the stability of process control are enhanced, and have eliminated artificial factor.
B, in casting process because of not needing detect by an unaided eye steel stream of operator, so needn't strengthen the lower edge space of protection casting cover, promptly can reduce to protect the lower edge space of casting cover; Even it is airtight fully; It is air-breathing to have reduced high-temperature molten steel like this, has increased protection cast effect, and has improved steel product quality; And the flue gas that oxidation produces is able to reduce, and improved the working environment of workers.
C, under the process stabilizing condition; The operator needn't climb to the ingot mould top and go up the molten steel rising situation in the mould of observing; Improved safety coefficient greatly; Observe steel flow velocity degree because of no longer needing the operator to stare at high-temperature steel stream for a long time in addition, avoided high-temperature molten steel to launch very strong IR and the human eye of burning.
Description of drawings
Fig. 1 is the structural representation that fast indicating device is annotated in the application's die casting.
Wherein, description of reference numerals is following:
1 steel ladle; 2 steel ladle hanger gudgeons; 3 electronic scale treasures (LOAD CELLS);
4 mouths of a river; 5 slide plates; 6 electric liquid oil cylinders;
7 ingot moulds; 8 casting cars; 9 data processors (PLC module);
10 displays; 12 memory devices (data storage computer).
The specific embodiment
, the mouth of a river of ladle bottom receives the influence of many-sided factors such as mouth of a river temperature, molten steel temperature, mouth of a river shape when flowing out in view of steel stream in the casting process; The basic survey of conventional artificial experience control method does not go out the concrete numerical value of the beam speed of casting process; Can only roughly judge the speed of annotating speed by rule of thumb; The data support that can't science be provided for the control and the improvement of technology, the present inventor gropes through scene for many years, has designed die casting and has annotated fast indicating device.
The primary structure that fast indicating device is annotated in this die casting constitutes introduction as follows.
Die casting is annotated fast indicating device and is mainly comprised with lower member: steel ladle 1, casting car 8, electronic scale treasure 3, data processor 9, display 10, memory device 12.
When needs were poured into a mould, steel ladle 1 was transferred to through crane on the casting car 8 that can stably place steel ladle 1, and this casting car 8 can be regulated steel ladle placed on it 1 up and down.Because steel ladle can produce certain adaptability to changes when rocking; The data influence that the electronic scale treasure 3 that the back is mentioned measures is bigger; Make that the weight data fluctuation that measures is very big; Make follow-up a series of data and then fluctuate simultaneously, therefore when actual design casting car 8, need consider how to guarantee system stability, guarantee that data presented is accurately steady.
Be provided with in steel ladle hanger gudgeon 2 contact positions of casting car 8 and steel ladle 1 electronic scale treasure 3 (in fact electronic scale treasure 3 be arranged on bear molten steel ladle weight on the casting car the position just can); Adopt the electronic scale treasure 3 can real-time tracking ladle gross weight; Along with flowing out from the mouth of a river 4 of steel ladle 1, molten steel is poured in the ingot mould 7; The weight of steel ladle 1 is changing; Electronic scale treasure 3 weighing on one side ladle gross weights, on one side ladle gross weight amount data that are weighed to and time corresponding data are passed through built-in data transmission module, utilize wired or wireless mode is delivered to data processor 9.As electronic scale treasure 3, for example can be LOAD CELLS, it sends to data processor 9 with ladle gross weight signal automatically.
The gross weight sampling period (gross weight sample frequency) of the gross weight amount data of 3 pairs of steel ladle 1 of electronic scale treasure can be provided with as required; Such as whenever gathering a ladle gross weight at a distance from 10 seconds; Also can whenever gather a ladle gross weight as required at a distance from 0.1 second; Because the development of modern electronic technology, therefore satisfy the regulation sampling period electronic circuit be provided with very easy.
Data processor 9 goes out the pour steel weight (poring rate in the unit interval according to ladle gross weight amount data and the corresponding Time Calculation from electronic scale treasure 3; Can be called die casting again and annotate speed immediately); Such as with kg/min being unit calculating per minute pour steel weight; And result of calculation is transferred to display 10 shows in real time, in addition, data processor 9 can also be drawn out poring rate along with the change of time curve and be transferred to display 10 and show.In addition, data processor 9 can be transferred to relevant data in the relevant memory device (such as the computer among Fig. 1 12) and store.Can delete or delete automatically the stipulated time span such as the data before two months by administrative staff during the overabundance of data of storage in the memory device 12.Data processor 9 can be PLC ((Programmable Logic Controller: programmable logic controller (PLC)).
In addition; On the fast indicating device of notes of the present invention, a warning device can also be set; Such as when annotating speed and be lower than a certain lower critical value, (both can being that audible alarm also can be that lamp dodges and reports to the police respectively with annotating that speed is higher than and gives the alarm during critical value on a certain; Also can be other any ways of expecting), the lower critical value is such as getting 1800kg/min, and last critical value is such as getting 2300kg/min (the notes speed in the corresponding diagram 1 is crossed low alarm settings, annotated fast too high alarm settings respectively).The setting of critical value also can be decided according to arts demand, level of security by producers.
At the included display screen (display) 10 of the fast indicating device of notes of the present invention 1; It can be a kind of touch display screen; Both can show respectively on screen that die casting annotated speed, gross weight sampling period immediately, annotates speed and show record; The fast name (" heat (batch) number input " " recorder " in promptly scheming) of crossing low alarm setting value, the fast too high alarm setting value of notes, importing current heat (batch) number of pouring into a mould and recorder of gross weight sampling period, notes of electronic scale treasure 3 can also be set through display screen; Also can on screen, show the interface of carrying out heat (batch) number typing inquiry and/or heat (batch) number record queries; In case the selected heat (batch) number that will inquire about; The total data of the steel ladle pouring process of this heat (batch) number will be packed and is presented at the below (also can only show the predetermined items data) on the screen, and the data that also can as required inquiry be obtained copy in the file of appointment, are used for further industrial analysis.In addition; Except on screen, showing instant the notes the speed value; Can also be that time, ordinate show the notes speed change curve (this kind demonstration is than showing the instant speed value image more of annotating separately) in a period of time for the mode of annotating speed according to abscissa, can do multiple setting as required in a word.
Fast notes speed display frequency is annotated in the die casting that shows on the screen immediately can be consistent with the gross weight sampling period (gross weight sample frequency); Also can design in addition as required; Such as whenever refreshing screen display one time, see clearly to avoid the too fast and difficult field technician of being of screen-refresh at a distance from two gross weight sampling periods.
So the real-time weight signal through gathering steel ladle in the die casting steel pouring process and the duration of pouring signal and convert thereof into " per minute pour steel weight " this significant process parameter; Be used for instructing and water the steel workman and control and (for example annotate speed; Water the steel workman and can send slide plate keying control signal through data processor 9 to electric liquid oil cylinder 6 according to the result of calculation of data processor 9; The slide plate 5 that install at control ladle nozzle 4 places, the open degree at 5 pairs of mouths of a river 4 of adjustment slide plate is correspondingly controlled poring rate; Adjustment is poured into the molten steel speed in the ingot mould 7); These data in the casting process also can be kept in the computer 12 through data processor 9, access inquiry when needing, and analyze teeming speed situation in the whole casting cycle.
Specific embodiment
Steel ladle 1 is placed on the casting car 8, and operating personnel load onto ladle slide mechanism, hydraulic jack and protective cover, regulate steel ladle up and down; Behind good bag; Carry out the baking of the relevant mouth of a river and prepare, after waiting to accomplish mouth of a river baking and preparing, open die casting and annotate fast indicating device with mold with mold; Through touch-screen input steel ladle heat (batch) number and recorder, notes speed sampling period to be cast and after being used for the data such as lower critical value and last critical value of alarm settings; Press the button that indication begins to pour into a mould, send the slide plate 5 at 4 places, the mouth of a river of opening steel ladle 1 to electric liquid oil cylinder 6, in ingot mould 7, inject molten steel through data processor 9.In the actual production; When just beginning to pour into a mould, need earlier the open degree of the slide plate 5 at 4 places, the mouth of a river is adjusted, treat that steel stream size is adjusted to proper level after; Once more ladle is adjusted; Slowly small size decline ladle makes protective cover lower edge fiberboard contact with tapetum fibrosum around the cast gate alms bowl, realizes the cast of steel stream full guard.Going up the electronic scale treasure of installing 3 through ladle barrow (pouring truck) provides ladle real-time gross weight weight signal; Be converted into analog signals and supply with PLC (Programmable Logic Controller: programmable logic controller (PLC) as data processor 9; Intend the 6ES7315-2AG10-0AB0 that adopts Siemens S7300 series); Signal is handled through PLC, obtains real-time gross weight gravimetric value of ladle and teeming speed value, and the various data that need observation such as speed are annotated in the demonstration die casting immediately on display 10.
Annotate a special case of fast display record system as die casting; PLC output signal can be handled through electronic circuit and drive the teeming speed value (only show the latter on the display screen at Fig. 1, reality can show various data as required) that two 4 big LED charactrons demonstrate real-time gross weight gravimetric value of ladle and reality.As the upper software of computer 12 Installation of W inCC of host computer, can write down the historical data and the curve of data such as storage real-time gross weight gravimetric value of ladle and teeming speed value, and can preserve for a long time.In addition; In data processor 9; Data such as real-time gross weight gravimetric value of the ladle of each stove and teeming speed value can write down preservation by the EXCEL document automatically, and data record blanking time (sampling period) also can be revised as required, are convenient to the technical staff and examine die casting and water steel operating procedure implementation status.Data processor 9 also can every month generates the EXCEL document files of a of that month die casting heat (batch) number automatically and is transferred to computer 12 to be stored, in order to accessing in addition analyzing and processing when needing.
Claims (14)
1. fast indicating device is annotated in a punching block casting, is used for indicating the poring rate of die casting process from the molten steel of the mouth of a river outflow of steel ladle, it is characterized in that this indicating device comprises:
The casting car is used for carrying and puts the steel ladle that will pour into a mould;
The electronic scale treasure is arranged on the position of bearing said molten steel ladle weight on the said casting car, can weigh in real time to the weight of steel ladle, the gross weight that records steel ladle in casting process along with the change of time data;
Data processor, according to from the steel ladle gross weight of said electronic scale treasure along with the change of time data computation goes out poring rate; With
Display shows the poring rate that said data processor calculates.
2. fast indicating device is annotated in punching block casting as claimed in claim 1, it is characterized in that,
Said electronic scale treasure is arranged at the gudgeon position contacting of said casting car and said steel ladle.
3. fast indicating device is annotated in punching block casting as claimed in claim 1, it is characterized in that,
Said electronic scale treasure is built-in with data transmission module, and said data transmission module sends said delta data to said data processor through wireless or wired mode.
4. fast indicating device is annotated in punching block casting as claimed in claim 1, it is characterized in that, also comprises:
Memory is stored the result of calculation of said electronic scale treasure data measured and said data processor.
5. fast indicating device is annotated in punching block casting as claimed in claim 1, it is characterized in that,
The gross weight sample frequency that said electronic scale treasure is measured said delta data is provided with through said display,
The notes speed display frequency that said display adopts when showing said poring rate is identical or different with the said gross weight sample frequency of said electronic scale treasure.
6. fast indicating device is annotated in punching block casting as claimed in claim 1, it is characterized in that,
Said electronic scale treasure is a LOAD CELLS, and said data processor is a programmable logic controller (PLC).
7. fast indicating device is annotated in punching block casting as claimed in claim 1, it is characterized in that, also is provided with:
Alarm is reported to the police when the said poring rate from said data processor is lower than the lower critical value or is higher than critical value,
Said upper and lower critical value can be provided with through said display.
8. fast indicating means is annotated in a punching block casting, is used for indicating the poring rate of die casting process from the molten steel of the mouth of a river outflow of steel ladle, it is characterized in that this indicating means comprises following step:
Lay step, the steel ladle that will pour into a mould is placed into the casting car;
The step of weighing is utilized in the set electronic scale treasure in position that bears said molten steel ladle weight on the said casting car, and the weight of steel ladle is weighed in real time, the gross weight that records steel ladle in casting process along with the change of time data;
Calculation procedure, utilize data processor according to from the steel ladle gross weight of said electronic scale treasure along with the change of time data computation goes out poring rate; With
Step display is presented at the poring rate that said data processor calculated on the display.
9. fast indicating means is annotated in punching block casting as claimed in claim 8, it is characterized in that,
Said electronic scale treasure is arranged on the gudgeon position contacting place of said casting car and said steel ladle.
10. fast indicating means is annotated in punching block casting as claimed in claim 8, it is characterized in that,
Said electronic scale treasure sends said delta data to said data processor through wireless or wired mode.
11. fast indicating means is annotated in punching block casting as claimed in claim 8, it is characterized in that,
Behind said step display, also comprise:
Storing step is stored the result of calculation of said electronic scale treasure data measured and said data processor.
12. fast indicating means is annotated in punching block casting as claimed in claim 8, it is characterized in that,
Said electronic scale treasure is measured said delta data with the gross weight sample frequency of regulation,
Said gross weight sample frequency is provided with through said display,
The notes speed display frequency that said display adopts when showing said poring rate is identical or different with the said gross weight sample frequency of said electronic scale treasure.
13. fast indicating means is annotated in punching block casting as claimed in claim 8, it is characterized in that,
Said electronic scale treasure is a LOAD CELLS, and said data processor is a programmable logic controller (PLC).
14. fast indicating means is annotated in punching block casting as claimed in claim 8, it is characterized in that, also is provided with:
Alert step is reported to the police when the said poring rate from said data processor is lower than the lower critical value or is higher than critical value,
Said upper and lower critical value can be provided with through said display.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104444987A CN102430725A (en) | 2011-12-26 | 2011-12-26 | Pouring speed indicating method and device for steel die casting |
| CN201410525323.2A CN104259408B (en) | 2011-12-26 | 2011-12-26 | Fast indicating means is infused in punching block casting and fast instruction device is infused in punching block casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104444987A CN102430725A (en) | 2011-12-26 | 2011-12-26 | Pouring speed indicating method and device for steel die casting |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410525323.2A Division CN104259408B (en) | 2011-12-26 | 2011-12-26 | Fast indicating means is infused in punching block casting and fast instruction device is infused in punching block casting |
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| CN102430725A true CN102430725A (en) | 2012-05-02 |
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| CN2011104444987A Pending CN102430725A (en) | 2011-12-26 | 2011-12-26 | Pouring speed indicating method and device for steel die casting |
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| CN103752780A (en) * | 2013-10-28 | 2014-04-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Device and method for measuring casting weight of vacuum furnace in real time by weight sensor |
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| CN107335788A (en) * | 2017-05-22 | 2017-11-10 | 宁夏共享模具有限公司 | A kind of electric furnace goes out the weighing technique of iron during tapping a blast furnace |
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| CN103752780A (en) * | 2013-10-28 | 2014-04-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Device and method for measuring casting weight of vacuum furnace in real time by weight sensor |
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| CN104707984A (en) * | 2015-03-31 | 2015-06-17 | 中国重型机械研究院股份公司 | Automatic control system for pouring box plug rod for vacuum casting |
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| CN106694863B (en) * | 2016-12-29 | 2019-04-23 | 中冶京诚工程技术有限公司 | Molten steel pouring control method and device |
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Application publication date: 20120502 |