CN2725892Y - On-line detector for state of circular blank continuous casting machine - Google Patents
On-line detector for state of circular blank continuous casting machine Download PDFInfo
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- CN2725892Y CN2725892Y CN 200420082415 CN200420082415U CN2725892Y CN 2725892 Y CN2725892 Y CN 2725892Y CN 200420082415 CN200420082415 CN 200420082415 CN 200420082415 U CN200420082415 U CN 200420082415U CN 2725892 Y CN2725892 Y CN 2725892Y
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Abstract
The utility model relates to an on-line detector for the state of a circular blank continuous casting machine. A plurality of perpendicular blind holes in alternated distribution are drilled on the cold surface of the copper wall of a crystallizer, and a hot flow sensor is installed in each blind hole and is connected to a computer through a leading wire. The perpendicular blind holes have the alternated distribution structure that at least four perpendicular blind holes are symmetrically distributed on one horizontal circumferential direction within the range of 70 mm to 150 mm below the crescent face of the crystallizer; at least one perpendicular blind hole is respectively arranged on the outer arc point and the inner arc point on one horizontal section within the range of 30 mm to 80 mm of the bottom of the crystallizer. The utility model can know the degree of uneven solidification of casting blanks through the detection of the circumferential hot flow distribution of the crystallizer, can accurately measure the good or the bad state of the casting machine, can also further carry out on-line judgment for quality conditions of the casting blanks and realize steel-leakage forecast.
Description
Technical field
The utility model relates to a kind of round billet continuous casting machine state on-line detector.
Background technology
According to the geomery of cast strand, the conticaster in the iron and steel metallurgical industry is classified as slab caster, billet caster, rectangular bloom (bloom) conticaster, round billet continuous casting machine, special-shaped billet continuous casting machine or the like usually by the shape of casting strand.As everyone knows, it is more more difficult than square billet and rectangular bloom to justify the direct casting of base.This is because on the one hand, owing to its specific surface area minimum, thereby the more other forms of continuous casting billet of radiating condition is poorer, promptly needs to adopt in crystallizer stronger cooling to realize the formation of certain thickness base shell.On the other hand, for square billet or rectangular billet caster, because of cooling off faster in the bight, the corner angle of base shell are solidification forming in advance partly, thereby form a firmer supporting construction, other parts of the base shell of Xing Chenging even bigger distortion is arranged, can large tracts of land not break away from crystallizer wall usually yet under the support of this structure subsequently.Yet when cast circle base, just can not form a supporting construction, in case inhomogeneous cooling occurs the base shell is produced when being out of shape, will cause base shell large tracts of land disengaging crystallizer wall and produce uneven air gap, the base shell became uneven that this further strengthens inhomogeneous cooling again conversely and makes generation.Therefore, though the circle base is being the most symmetrical in shape, its base shell solidifies and always is difficult to accomplish uniform thickened.The consequence that became uneven brought is to make the base shell easily form big stress at thin location, and its circular configuration makes internal stress be difficult for being out of shape by the base shell to reduce or eliminate quilt, this has just increased the probability that produces strand lobe defective greatly, and serious also can cause the lobe bleed-out; And the distortion that the base shell produces can make the part of its contact crystallizer wall produce further " being adjacent to " effect again; this makes covering slag be difficult to successfully flow to and plays lubricated gentle cold-working usefulness between base shell and crystallizer wall that this becomes the inducement that cracks with bonding bleed-out again.This shows that the main difficulty of the difficult cast of circle base is the inhomogeneous solidification phenomenon of distinctive base shell of its existence just
Base shell thickness in crystallizer is always uneven usually when a large amount of finally production practices of the early stage research of round billet continuous casting have also confirmed round billet continuous casting fully, and its probability that crackle and bleed-out take place also is higher than other forms of continuous casting far away.
The problem of base shell became uneven in crystallizer when overcoming round billet continuous casting, some improvement projects were once proposed in the design of crystallizer, for example the circumferential distribution design with the crystallizer chilled water is adjustable, but this can increase the complicacy of structure, detection and control greatly, thereby is not generally adopted; Also proposed crystallizer is designed to corrugated structure with the distortion of restriction base shell and make the unlikely large tracts of land of base shell break away from crystallizer wall, but test findings shows this architecture advances effect and not obvious; In the recent period also proposed painstakingly to cause the scheme of air gap, a kind of structure is disclosed as patent JP8187552, promptly be distributed with several shallow slots at the crystallizer inwall, and its trend and crystallizer short transverse are at an angle, covering slag can flow into smoothly by these shallow slots, and reaches the effect that the base shell evenly solidifies; In addition, also has the scheme of coming even base shell to solidify, as the disclosed a kind of many taperings crystallizer of patent JP8132184 by the particular design of conical degree of crystallizer.
From the above mentioned, known method is many to overcome the became uneven of base shell from the design of mold structure, and the circle inhomogeneous origin cause of formation of solidifying of base and rule are not too much noted.Self-evident, distribution and inhomogeneous the solidifying of base shell along circumferential heat flow density in the crystallizer copper wall diabatic process have the most directly relation, thereby promptly have in early days by measuring the circumferential Temperature Distribution of crystallizer and estimate that heat flow density distributes, and and then analyze the inhomogeneous Study of Solidification Process work of base shell.As if these research work confirm that the distribution of heat flow density is Protean, be difficult to form fixing pattern.Yet, we by to the online detection of crystallizer heat flux distribution with anatomize, be among the frequent variation though find that hot-fluid distributed along density circumferential moment, under statistical significance, have certain pattern.Distribute two examples of online testing result of the circumferential heat flow density that Fig. 1 is carried out on certain round billet continuous casting machine for us.Every group of data that are used to draw Fig. 1 a are the mean value of the heat flow density detected value of about 0.5～2min, and total time span is about 34 hours.Carry out 4 therebetween and watered time cast of totally 33 stove steel, and used 4 tundish.The data that are used to draw Fig. 1 b are obtained by another crystallizer of employing, wherein every group of data still are about the mean value of the heat flow density detected value of 0.5～2min, total time span is about 46 hours, has carried out 4 therebetween and has watered time cast of totally 46 stove steel, and used 7 tundish.As seen from the figure, heat flow density shows big unevenness on circumferentially distributing, and the pattern of this unevenness is quite fixing, and there is difference in the inhomogeneous pattern of the heat flow density of different crystallizers.Further, we find that also identical crystallizer changes to the different inhomogeneous patterns of casting stream its heat flow density of last back and also can change to a certain extent.In addition, long-term observation and statistics have been carried out in the position of the strand generation crackle that we are also produced certain factory six stream round billet continuous casting machines, discovery is in the same crystallizer military service phase, the circumferential position that crackle produces is comparatively fixing, its deflection has very strong regularity, but crackle produces the position between six casting streams difference is arranged then, even and for same casting stream if changed crystallizer then crackle produce the position also can be different.Therefore, have much ground for believing, inhomogeneous the solidifying of circle base has fixing pattern.Obviously, the influence of some technological factors can not cause long-term heat flow density inhomogeneous (departing from the crystallizer center as submersed nozzle), therefore this is that the state of casting machine itself causes, the assembling situation, crystallizer that comprises the crystallizer body on casting machine installation situation and the casting machine fan-shaped section to arc situation or the like.In other words, might critically weigh the quality of casting machine state by the online detection that the crystallizer heat flow density is circumferentially distributed.Undoubtedly, this is than adopting mechanical means the casting machine state to be detected more sensitive and direct before cast.
Therefore, need mention crystallizer hot-fluid on-line detection method.Usually, hot-fluid detects always based on temperature detection.And in the crystallizer copper wall, imbed the thermopair of varying number, being used for Level Detection, breakout prediction etc. is known technology.Disclose a kind of method as patent US5020585 and be used for the slab breakout prediction, its main points are to imbed the ordered series of numbers thermopair in the crystallizer copper wall from top to bottom, and the peak temperature point in each row of continuous detecting is then reported to the police if this distance surpasses certain value apart from the distance of liquid level; The disclosed another kind of breakout prediction method of patent US4949777 is still at crystallizer copper wall difference and imbeds temperature sensor, carries out breakout prediction by detecting the each point temperature variation.For these systems,, then can only carry out approximate treatment by temperature detection value if will further investigate the situation of heat flow density based on temperature detection.A kind of rough approximation method is to adopt experimental formula to calculate in conjunction with cooling water temperature, another kind of complicated method is based on so-called heat transfer indirect problem (be one or more temperature of known internal, estimate surface film thermal conductance or heat flux distribution) and sets up model and calculate.Because this class is calculated certain assumed condition need be arranged, therefore how inaccurate.
About the relation of heat flow density and temperature, need to do than detail analysis:
Heat transfer in the copper wall is reduced to the one dimension heat conduction equation
In the formula, ρ is the density of copper, C
pBe the thermal capacitance of copper, T is a temperature, and τ is the time, and λ is the coefficient of heat conductivity of copper, and x is a position coordinates.By (1), temperature is with the linear relationship that is changed to of position under the situation of steady state heat transfer.Again because hot-fluid q has following relation:
Therefore have:
In the formula, coordinate is located at copper wall huyashi-chuuka (cold chinese-style noodles) (with the surface of contact of chilled water) zero point, and to establish its temperature be T
0
If supposition copper wall huyashi-chuuka (cold chinese-style noodles) each point temperature is a certain value, then by (3), heat flow density value q can directly be calculated by copper wall hot-face temperature detected value T.Be simple linear relationship owing to (3) again, the always corresponding big hot-fluid of then high temperature.
Yet actual casting process is impossible keep complete steady state heat transfer: molten steel in mold temperature, pulling rate, flow field, covering slag situation, air gap situation or the like all are among the variation; Sometimes, the diabatic process of crystallizer huyashi-chuuka (cold chinese-style noodles) also might change, as causing heat-transfer capability change etc. because of the chilled water local boiling produces bubble and incrustation scale etc.The result who is caused is that conducting heat can not keep stable state completely in time, spatially also can not keep evenly.Under this kind situation, temperature is generally nonlinear relationship with its variation apart from the distance of hot side in the copper wall, and the heat flow density value is the functional of Temperature Distribution in the copper wall, thus heat flow density spatially distribution and the space distribution of temperature there is no direct corresponding relation.In other words, for two different check points, high temperature detection value might not corresponding big heat flow density.In fact, directly investigate the heat flux distribution situation by Temperature Distribution and also have a tangible problem, promptly limit owing to machining precision, different temperature detecting point can not keep (and this distance can responsive influence temperature detection value) in full accord apart from the distance of copper pipe hot side, therefore more can not directly weigh the height of heat flow density by the height that compares the point-to-point transmission temperature.
Based on the problems referred to above, patent US4553604 has adopted a kind of sheet-type sensor of directly carrying out the hot-fluid detection, and carries out breakout prediction according to the variation of hot-fluid.Yet because of this sheet-type sensor is affixed on crystallizer copper wall huyashi-chuuka (cold chinese-style noodles), hot-fluid that whether can sensitive perception near-thermal face changes ambigendi locus, and the influence (as local boiling, fouling etc.) that can be cooled off aqueous condition again, so generally do not adopted.
Summary of the invention
The purpose of this utility model is to provide a kind of on-line measuring device of round billet continuous casting machine state, and it can understand the inhomogeneous degree of solidifying of strand by the detection of the circumferential heat flux distribution of crystallizer, and can weigh the quality of casting machine state subtly.Further also can carry out online judgement and realize breakout prediction the slab quality situation.
For achieving the above object, the on-line measuring device of the round billet continuous casting machine state that the utility model proposes, it is drilled with several vertical blind holes that becomes certain space to distribute on crystallizer copper wall huyashi-chuuka (cold chinese-style noodles), a heat flux sensor is installed in each blind hole, and each heat flux sensor is connected to computing machine through lead-in wire.Like this, the signal of heat flux sensor can be sent on the computing machine and calculate the heat flow density of each measuring point and show, according to the degree of irregularity of the circumferential distribution of heat flow density and cooperate other to detect the quality that data and analysis result are judged the casting machine state.
The space distribution scheme of described vertical blind hole is: the certain level week under the crystallizer meniscus in 70～150mm scope upwards has at least 4 vertical blind holes to be symmetrically distributed in this week upwards; In the 30～80mm scope of distance crystallizer bottom on certain horizontal section at least outside acnode with interior acnode place one vertical blind hole is arranged respectively;
Described vertical blind hole, its diameter are 4～7mm, its bosom, bottom apart from the distance of copper wall hot side between 6～11mm;
Described heat flux sensor comprises a right cylinder and two armoured thermocouples; Described cylindrical material is identical with the crystallizer copper wall, or is the close material of heat conductivility, and cylinder diameter equates substantially with the diameter of vertical blind hole, and forms wringing fit with vertical blind hole, the deep equality of cylinder height and described vertical blind hole;
In the described heat flux sensor, two armoured thermocouples are parallel to cylinder axis, embed in the right cylinder.Particularly, be used to install thermopair in two holes of processing near described periphery side by side along axis direction, one is through hole, and one is blind hole.Two Kong Zaizhou make progress and right cylinder wall tangent substantially (cutting slightly mutually), and the distance with the right cylinder bottom at the bottom of the hole of blind hole is not less than 3mm, and the distance apart from the right cylinder bottom should keep accurate unanimity at the bottom of the blind hole hole of different right cylinder, and precision is not less than ± 0.3mm.Two armoured thermocouples are mounted respectively in above-mentioned two holes, and the bottom that is installed on the armoured thermocouple in the through hole is concordant with the right cylinder bottom, and the bottom that is installed on the armoured thermocouple in the blind hole closely contacts with the bottom of blind hole.For prevent to install and use in the position change of thermopair, the glue of available a small amount of bonded metal bonds together thermopair and right cylinder.
Described heat flux sensor is subjected to certain mechanical force and inserts in the vertical blind hole on the described crystallizer copper wall, and the bottom of heat flux sensor keeps closely contacting with the bottom of blind hole.For prevent to install and use in the position change of heat flux sensor, also can use the glue of a small amount of bonded metal to fix heat flux sensor.
Further, for can being disassembled from described crystallizer blind hole, described heat flux sensor is repeated to use, the equal diameters of the vertical blind hole on the cylindrical diameter that also can make heat flux sensor and the described crystallizer, and use the fastening heat flux sensor of screw.Particularly, on described right cylinder, processing the screw (through hole) of the 3rd fastening usefulness side by side along axis direction near periphery, this screw week upwards and right cylinder wall tangent substantially (cutting slightly mutually).Heat flux sensor is screwed into the screw that matches after being inserted in the vertical blind hole on the described crystallizer copper wall again, makes heat flux sensor be fastened on Tong Bishang.
Described heat flux sensor, its thermopair extension line twines to shield the electromagnetic interference (EMI) of production scene with the soft strip of ferromagnetic material.Further, the collection of thermocouple signal uses 12 or above light every the A/D plate and carry out the high-order lowpass digital filtering, with the noise of further reduction signal.
Adopt device from the above mentioned, realized mensuration the circumferential heat flux distribution of crystallizer.Further, weigh the quality of casting machine state with following method, soon the mean value of 10～15min of each measuring point heat flow density measured value is as the typical value of this measuring point heat flow density, simultaneously, for the measuring point that makes progress in week near mold liquid level, defined parameters K1=|qa-qm|/qa (wherein qa is the mean value of each measuring point heat flow density typical value, and qm is the minimum value or the maximal value of each measuring point heat flow density typical value); For the measuring point that makes progress in week near crystallizer bottom, defined parameters K2=|qin-qex|/qin (wherein qin is an inner arc place heat flow density typical value, and qex is an outer arc heat flow density typical value) weighs the state of casting machine with K1 and the residing scope of K2 value.
Adopt the utility model, can reach following effect:
(1) by the online detection of the circumferential heat flux distribution of crystallizer, can understand the inhomogeneous degree of solidifying of strand, and in order to weigh the quality of casting machine state subtly.
(2) detection and the analysis result that circumferentially distributes according to hot-fluid can carry out more reasonable and careful regulation and control to the continuous casting process process, as the steel grade of selecting according to the current state of casting machine to be fit to pour into a mould, and pulling rate and secondary cooling system etc. are reasonably adjusted etc.
(3) further, can carry out online judgement to the overall state of slab quality according to the current state of casting machine.
(4) on the analysis foundation of a large amount of online detection data, can set up the breakout prediction model.
Description of drawings
Fig. 1 a, Fig. 1 b is distribute two examples of online testing result of the circumferential heat flow density of crystallizer of being carried out on certain round billet continuous casting machine;
Fig. 2 a, Fig. 2 b, Fig. 2 c are the synoptic diagram of heat flux sensor cylindrical structure;
Fig. 3 a, Fig. 3 b are the heat flux sensor scheme of installation.
Embodiment
Following according to Fig. 2, Fig. 3 illustrates better embodiment of the present utility model.
At first, on the crystallizer copper pipe of a round billet continuous casting machine (the round base diameter of being poured into a mould is 178mm), symmetry processing 6 blind holes vertical with copper pipe surface (having two blind holes to lay respectively at inner arc and outer arc place) are respectively processed a blind hole vertical with copper pipe surface at inner arc place and outer arc place respectively on the xsect of distance crystallizer end opening 130mm on the xsect of distance crystallizer 155mm suitable for reading (apart from the about 80mm of molten steel face).The diameter of described 8 blind holes is 6mm, and blind hole bottom to the distance of copper pipe inside surface is 7mm.
Shown in Fig. 2 a, the right cylinder of heat flux sensor 1 is made by red copper, and diameter is 6mm, highly is 7mm.Be used to install thermopair in two holes 2 of processing and 3 near right cylinder 1 surface side by side along axis direction, one is blind hole (hole 2), and one is through hole (hole 3), and its diameter is 1mm.Two Kong Zaizhou make progress and right cylinder wall tangent substantially (cutting slightly mutually), and the distance with right cylinder 1 bottom at the bottom of the hole of blind hole is 3.5mm, and the distance apart from the right cylinder bottom all keeps accurate unanimity at the bottom of the blind hole hole of different right cylinder, and precision is not less than ± 0.3mm.In addition, process the screw 4 (through hole) of the 3rd fastening usefulness side by side along axis direction on approaching surface on described right cylinder 1, its diameter is 2mm, and this screw made progress and right cylinder wall tangent substantially (cutting slightly mutually) in week.Fig. 2 b, Fig. 2 c are the synoptic diagram of Fig. 2 a along A-A line, B-B line.
Shown in Fig. 3 a, the armouring nickelchromium-nickelsiliconthermocouple 5 and 6 that two diameters are 1mm is mounted respectively in described hole 2 and hole 3, the bottom that is installed on the armoured thermocouple in the hole 2 (blind hole) closely contacts with the bottom of blind hole, and the bottom that is installed on the armoured thermocouple in the hole 3 (through hole) is concordant with the right cylinder bottom.For prevent to install and use in the position change of thermopair, the glue of available a small amount of bonded metal, with thermopair 5 and 6 and right cylinder 1 bond together, promptly right cylinder 1 and thermopair 5 and 6 have constituted a heat flux sensor together.Heat flux sensor is inserted into blind hole 8 backs that are arranged on the crystallizer copper wall 9 and is screwed into the screw 7 that matches at fastening screw 4, and like this, heat flux sensor just has been installed on the crystallizer copper wall 9.Wherein, Fig. 3 b is the synoptic diagram of Fig. 3 a along the A-A line.
The extension line of each thermopair is integrated a branch of, and thick with 0.2mm, the wide silicon strip of 1～2mm twines, and forms screen layer.In the present embodiment, the electric equipment interference that the crystallizer electromagnetic agitation is arranged, is close to etc.Thermocouple lead is by the outside cabling of electromagnetic stirring equipment.Thermocouple lead is connected signal regulating panel, pass through 12 light again, reach computing machine every the A/D plate.The frequency of on-the-spot electromagnetic agitation is 3～6Hz, and high-order lowpass digital filtering cutoff frequency is chosen to be 1Hz.In computing machine, signal is further carried out calculating each measuring point in each heat flow density constantly behind the digital filtering.
In the present embodiment, as shown in the table respectively according to K1 value and K2 value that measured data calculates.
| The test group | K1 | K2 | The casting machine state |
| 1 | 0.3-0.5 | 0.3-0.5 | Casting machine is in |
| 2 | 0.6-0.8 | Near 0.7 fluctuation | The casting machine state is very poor, and bleed-out easily takes |
| 3 | 0.5-0.7 | 0.5-0.7 | The casting machine state is general |
| 4 | 0.45-0.7 | 0.5-0.7 | The casting machine state is general |
Adopt the utility model, can reach following effect:
(1) by the online detection of the circumferential heat flux distribution of crystallizer, can understand the inhomogeneous degree of solidifying of strand, and in order to weigh the quality of casting machine state subtly.
(2) detection and the analysis result that circumferentially distributes according to hot-fluid can carry out more reasonable and careful regulation and control to the continuous casting process process, as the steel grade of selecting according to the current state of casting machine to be fit to pour into a mould, and pulling rate and secondary cooling system etc. are reasonably adjusted etc.
(3) further, can carry out online judgement to the general status situation of slab quality according to the current state of casting machine.
(4) on the analysis foundation of a large amount of online detection data, can set up the breakout prediction model.
Claims (10)
1. the on-line measuring device of a round billet continuous casting machine state, it weighs casting machine state quality subtly by the situation that detects the circumferential heat flow density distribution of continuous casting mold of round billets, be characterised in that, on crystallizer copper wall huyashi-chuuka (cold chinese-style noodles), be drilled with the vertical blind hole that several become certain space to distribute, one heat flux sensor is installed in each blind hole, each heat flux sensor is connected on the computing machine through lead-in wire, and COMPUTER CALCULATION goes out the heat flow density of each measuring point and shows.
2. the on-line measuring device of round billet continuous casting machine state as claimed in claim 1, it is characterized in that, the space distribution structure of described vertical blind hole is: the certain level week under the crystallizer meniscus in 70～150mm scope upwards has at least 4 vertical blind holes to be symmetrically distributed in this week upwards; In the 30～80mm scope of distance crystallizer bottom on certain horizontal section at least outside acnode with interior acnode place one vertical blind hole is arranged respectively.
3. the on-line measuring device of round billet continuous casting machine state as claimed in claim 2 is characterized in that, described vertical blind hole, its diameter is 4～7mm, its bosom, bottom apart from the distance of copper wall hot side between 6～11mm.
4. the on-line measuring device of round billet continuous casting machine state as claimed in claim 1 is characterized in that, described heat flux sensor comprises a right cylinder and two armoured thermocouples; Described cylindrical material is identical with the crystallizer copper wall, or is the close material of heat conductivility, and cylinder diameter equates substantially with the diameter of vertical blind hole, and forms wringing fit with vertical blind hole, the deep equality of cylinder height and described vertical blind hole.
5. the on-line measuring device of round billet continuous casting machine state as claimed in claim 4 is characterized in that, described two armoured thermocouples are parallel to cylinder axis, embeds in the right cylinder.
6. the on-line measuring device of round billet continuous casting machine state as claimed in claim 4, it is characterized in that, be used to install thermopair in two holes of processing near described periphery side by side along axis direction, one is through hole, one is blind hole, two Kong Zaizhou are upwards tangent substantially with the right cylinder wall, cut slightly mutually; Distance with the right cylinder bottom at the bottom of the hole of blind hole is not less than 3mm, and the distance apart from the right cylinder bottom should keep accurate unanimity at the bottom of the blind hole hole of different right cylinder, and precision is not less than ± 0.3mm; Described two armoured thermocouples are mounted respectively in above-mentioned two holes, and the bottom that is installed on the armoured thermocouple in the through hole is concordant with the right cylinder bottom, and the bottom that is installed on the armoured thermocouple in the blind hole closely contacts with the bottom of blind hole.
7. the on-line measuring device of round billet continuous casting machine state as claimed in claim 6, it is characterized in that, described heat flux sensor is subjected to certain mechanical force and inserts in the vertical blind hole on the described crystallizer copper wall, and the bottom of heat flux sensor keeps closely contacting with the bottom of blind hole.
8. the on-line measuring device of round billet continuous casting machine state as claimed in claim 6, it is characterized in that, also can use the fastening heat flux sensor of screw, promptly on described right cylinder at the screw that processes the 3rd fastening usefulness near periphery along axis direction side by side, this screw is upwards tangent substantially with the right cylinder wall in week, cuts slightly mutually; Heat flux sensor is screwed into the screw that matches after being inserted in the vertical blind hole on the described crystallizer copper wall again, makes heat flux sensor be fastened on Tong Bishang.
9. the on-line measuring device of round billet continuous casting machine state as claimed in claim 8 is characterized in that, described heat flux sensor, and its thermopair extension line twines to shield the electromagnetic interference (EMI) of production scene with the soft strip of ferromagnetic material.
10. the on-line measuring device of round billet continuous casting machine state as claimed in claim 9 is characterized in that, 12 of the collection uses of thermocouple signal or above light are every the A/D plate and carry out the high-order lowpass digital filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420082415 CN2725892Y (en) | 2004-08-31 | 2004-08-31 | On-line detector for state of circular blank continuous casting machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200420082415 CN2725892Y (en) | 2004-08-31 | 2004-08-31 | On-line detector for state of circular blank continuous casting machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934353A (en) * | 2009-06-30 | 2011-01-05 | 上海宝信软件股份有限公司 | Device and method for breakout prediction during slab continuous casting |
| CN102589736A (en) * | 2011-01-05 | 2012-07-18 | 中国科学院沈阳自动化研究所 | Detection method and detection system for metal powder laser rapidly-molded temperature field |
| CN110470692A (en) * | 2019-09-11 | 2019-11-19 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of continuous casting functional refractory material thermal-shock resistance evaluation method |
| CN114309496A (en) * | 2021-11-22 | 2022-04-12 | 中冶赛迪工程技术股份有限公司 | Sensor packaging and detecting method of crystallizer |
-
2004
- 2004-08-31 CN CN 200420082415 patent/CN2725892Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934353A (en) * | 2009-06-30 | 2011-01-05 | 上海宝信软件股份有限公司 | Device and method for breakout prediction during slab continuous casting |
| CN102589736A (en) * | 2011-01-05 | 2012-07-18 | 中国科学院沈阳自动化研究所 | Detection method and detection system for metal powder laser rapidly-molded temperature field |
| CN102589736B (en) * | 2011-01-05 | 2013-09-18 | 中国科学院沈阳自动化研究所 | Detection method and detection system for metal powder laser rapidly-molded temperature field |
| CN110470692A (en) * | 2019-09-11 | 2019-11-19 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of continuous casting functional refractory material thermal-shock resistance evaluation method |
| CN114309496A (en) * | 2021-11-22 | 2022-04-12 | 中冶赛迪工程技术股份有限公司 | Sensor packaging and detecting method of crystallizer |
| CN114309496B (en) * | 2021-11-22 | 2023-12-19 | 中冶赛迪工程技术股份有限公司 | Sensor package and detection method of crystallizer |
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