CN103551399A - Measuring equipment - Google Patents
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- CN103551399A CN103551399A CN201310544985.XA CN201310544985A CN103551399A CN 103551399 A CN103551399 A CN 103551399A CN 201310544985 A CN201310544985 A CN 201310544985A CN 103551399 A CN103551399 A CN 103551399A
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- 238000001816 cooling Methods 0.000 claims abstract description 204
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 171
- 239000010959 steel Substances 0.000 claims abstract description 171
- 238000005259 measurement Methods 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 6
- 238000000889 atomisation Methods 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007519 figuring Methods 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 13
- 239000007921 spray Substances 0.000 description 10
- 239000000779 smoke Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention discloses measuring equipment, which is used for measuring the thickness of a steel plate on-line. The measuring equipment comprises a support frame, an ultrasonic emission source, an ultrasonic reception source and calculation treatment equipment; the calculation treatment equipment is respectively connected with the ultrasonic emission source and the ultrasonic reception source by virtue of data lines; the calculation treatment equipment can be used for figuring out the thickness of the steel plate according to ray angles and relative locations of the ultrasonic emission source and the ultrasonic reception source; the measuring equipment further comprises an aftertreatment cooling device, which can be used for directly carrying out cooling treatment on the steel plate according to measurement results. The measuring equipment is high in accuracy, convenient and fast, the energy consumption of the cooling device is low, and the scale removal effect is good.
Description
Technical field
The application relates to a kind of measurement mechanism, relates in particular to the generous measurement mechanism of a kind of online steel plate.
Background technology
In field of metallurgy, be usually directed to the thickness of steel plate to measure.When the gauge of sheet material workpiece is extremely important, conventionally can detect its size.Now, the rapidity of detection, accuracy seem particularly important.
Common measurement mechanism is generally contact measuring apparatus, and conventional testing tool has Centigrade scale, slide measure etc., and detection mode adopts manual detection.If for the steel plate under different temperatures and state, traditional contact measuring apparatus is also unreliable.If when steel plate is processed the condition of high temperature, its measurement is become to impossible.And for contactless measurement mechanism, the current also blank field in research.In addition, for online, to after the thickness measure of steel plate, how steel plate is further processed, also be there is no at present referential experience both at home and abroad.
Summary of the invention
The application provide a kind of simple in structure, detect fast, the generous measurement mechanism of steel plate that accuracy of detection is high, and can further according to measurement result, adopt suitable method to carry out post processing to steel plate.
The principle Main Basis ultrasonic wave of measuring has stronger penetrability to solid dielectric, and in the distant characteristic of Propagation, adopts ultrasonic wave principle to measure steel plate.
First the application provides a kind of generous measurement mechanism, comprising: support, be positioned at steel plate top, and on it, be marked with scale.
Ultrasonic wave emission source, its be used for by ultrasonic wave x radiation x to steel plate a bit on.
Ultrasonic wave reception sources, it is for receiving the ultrasonic wave ray reflecting from steel plate.
Ultrasonic wave emission source and ultrasonic wave reception sources are rack-mount, and can move in the horizontal direction, and should be within same vertical plane.
Calculating treatmenting equipment: connect respectively ultrasonic wave emission source and ultrasonic wave reception sources by data wire, it can be by the relative position of ultrasonic wave emission source and ultrasonic wave reception sources, the thickness that x-ray angle calculates steel plate.
The method of calculating is apparent, at this, only does simple declaration.Because ultrasonic wave is when each Propagation, the relation of refraction angle and angle of reflection meets the law of refraction, be ripple pass two isotropic mediums boundary and time, direction of wave travel changes, and meets: the sine that the sine of incidence angle i equals refraction angle θ divided by ripple in the speed of the first medium is the speed at the second medium divided by ripple.If definition α is incidence angle, α ' is angle of reflection, and β is angle of transmission, and sin α/v1=sin α '/v1=sin β/v2=P formula illustrates that incidence angle equals angle of reflection, and the size of projectional angle is decided by medium W1, the speed v 1 of W2, the ratio of v2; And concerning incidence wave, back wave and projection ripple, there is identical ray parameter P on an interface.Said method does not need to explain in more detail at this.
The method that brief description is measured below: first mounting ultrasonic emission source is to position A, then ultrasonic wave emission source is opened, angle with 30-75 degree is launched ultrasonic wave to steel plate, ultrasonic wave reflects at upper surface of steel plate, ultrasonic wave is in-position B after reflection, if now ultrasonic wave reception sources is placed in to position B, can receive ultrasonic signal.In reality, we are except receiving ultrasonic signal at position B, can also receive ultrasonic signal at position C, this is due to the ultrasonic wave sending from ultrasonic wave emission source, a part reflects at upper surface of steel plate, and another part ultrasonic wave can penetrate the lower surface that steel plate arrives steel plate, thereby in lower surface generation reflex, therefore, at position C, also can receive ultrasonic signal.Calculating treatmenting equipment can be according to the potential difference of A point position, B point position and C point position, and the emitted angle in ultrasonic wave spontaneous emission source, can obtain by calculating treatmenting equipment the thickness of steel plate.
Take α as incidence angle, β is refraction angle, and v1 is the speed of ultrasonic wave in medium one, and v2 is the speed of ultrasonic wave in medium two, according to law of refraction sin α/v1=sin β/v2, therefore, the ultrasonic wave being penetrated by ultrasonic wave emission source in each medium, experiences reflection and refraction finally turns back to ultrasonic wave reception sources, like this, mobile ultrasonic wave reception sources on support, just the time of ultrasonic wave reentry point can be obtained, the time of return that ultrasonic wave is ordered at B point and C can be obtained, T
band T
c.According to formula d=c Δ tcos θ/2, can calculate the thickness d of steel plate, wherein c is the speed that ultrasonic wave is propagated in each dielectric layer, and θ is ultrasonic wave while entering into each dielectric layer and the angle of normal, and Δ t is the time of propagating in each dielectric layer.
Wherein, ultrasonic wave emission source, ultrasonic wave reception sources, the optional scope of its operating frequency is 1MHz-5MHz, the scope of incidence angle and acceptance angle is in the interval range of 30-75 degree.By regulating the position of ultrasonic wave reception sources, until ultrasonic wave reception sources can receive the signal from ultrasonic wave emission source, now, calculating treatmenting equipment can be according to ultrasonic wave the receiving angle of incident angle, ultrasonic wave reception sources and the horizontal direction of position, ultrasonic wave emission source and the horizontal direction of the speed in different medium, ultrasonic wave emission source and ultrasonic wave reception sources, calculate the wherein thickness of dielectric layer, i.e. the thickness of steel plate.
In addition, in measuring process, due to the inhomogeneities of surface of steel plate, its possibility of result obtaining is inaccurate, therefore, in order to alleviate or to avoid interference factor, can carry out plural number and measure, and its mean value is calculated, thereby obtain more accurate result.
Use this measurement mechanism, one needn't destroy the structure of steel plate, and can measure at any time, and moment obtains result.It can be widely used in the on-line measurement of hot rolled steel plate.
Two of the application's object is to obtain after the thickness of steel plate, can to steel plate, carry out post processing according to measured result, the device that post processing is used can be cooling device, that is to say steel plate after roughing is carried out to thickness measure, and then select suitable technological parameter to process steel plate according to measurement result.
As one of requisite parts on cooling device " nozzle ", we have the atomizing cooling nozzle of selecting on order ground, and this nozzle has conventional understanding in this area, there is no particular meaning.Select the object of atomizing cooling nozzle to be the unstability easily producing when avoiding selecting current directly steel plate to be processed, and atomizing cooling nozzle have higher controllability.Therefore, if no special instructions, the nozzle occurring is atomizing cooling nozzle.
For the ease of controlling speed and the stability of cooling procedure, the basic setup mode of cooling device is for comprising upper and lower both sides cooling device.Be upside cooling device, for carrying out cooling in cooling segment to the upper surface of hot rolled steel plate; Downside cooling device, for carrying out cooling in cooling segment to the lower surface of hot rolled steel plate.On upper and lower side cooling device, be evenly provided with several atomizing cooling nozzles, the quantity of nozzle, the spacing distance between nozzle without clear limit, keep the spacing between nozzle identical, such as quantity can be controlled within the scope of 10-100, the industrial equipment of directly selecting in existing enterprise, in addition, also need to guarantee that the atomizing cooling nozzle on the cooling device of upper and lower both sides is corresponding one by one in vertical direction.
In general, hot rolled steel plate is when just entering cooling section, if while only using atomizing cooling nozzle to lower the temperature to steel plate, still can not avoid head and afterbody to be equivalent to the problem that has three whiles to contact with cooling water, cause the cooling velocity of head and afterbody higher than the cooling velocity of interlude, when cooling rate cannot be consistent, can produce the otherness in steel plate tissue, performance.
In other words, exactly when steel plate carries out cooling section, by controlling hot rolled steel plate head, afterbody and interlude cooling water inflow when cooling, reduce the temperature difference of hot rolled steel plate head, afterbody and interlude, the uniformity of raising monoblock hot rolled steel plate rate of temperature fall.
The means of specifically taking comprise: on the control appliance of cooling device, use opening and closure of control appliance Control Nozzle, and same, the ejection pressure that control appliance also can Control Nozzle.
For explaining conveniently, we can be defined as first group of atomizing cooling nozzle, second group of atomizing cooling nozzle from left to right successively by upper and lower both sides cooling device corresponding nozzle on upright position ... n organizes atomizing cooling nozzle.
On cooling device, measurement of inductance equipment is installed, it is arranged on the initial segment position of upside cooling device, for induction heat rolled steel plate head, whether on upright position, surpass first group of atomizing cooling nozzle, also can whether on upright position, surpass first group of atomizing cooling nozzle for the afterbody of induction heat rolled steel plate.
During work, hot rolled steel plate moves forward under the drive of lathe in the direction of basic horizontal, and the measurement of inductance equipment that is arranged on upside cooling device the initial segment position is started working, and whether the head of induction heat rolled steel plate surpasses the on upright position
group atomizing cooling nozzle, when measurement of inductance equipment senses that the head of hot rolled steel plate has surpassed, passes the signal along to control appliance, and control appliance will be opened first group of atomizing cooling nozzle, and first group of nozzle starts to spray cooling water smoke to hot rolled steel plate.
Opening time for second group of atomizing cooling nozzle, because the horizontal pace of hot rolled steel plate is predefined, therefore, do not need the measurement of inductance equipment that provides again extra, only need according to the pace of the interval between nozzle, hot rolled steel plate, just can calculate hot rolled steel plate head and on upright position, surpass the time of second group of atomizing cooling nozzle, when control appliance can surpass second group of atomizing cooling nozzle at the head of hot rolled steel plate, open second group of nozzle, second group of nozzle starts to spray cooling water smoke to hot rolled steel plate.
By that analogy, for the 3rd group, the 4th group ... until opening time of last group atomizing cooling nozzle all can draw, control appliance also can be opened rear several groups of nozzles successively at corresponding time point.
That is to say to only have when the upright position of steel plate head surpasses a certain group of nozzle, the switch of the nozzle being exceeded just can be opened.And end face for fear of from nozzle to steel plate ejects the cooling velocity that cooling water smoke affects steel plate head, nozzle should not spray with direction vertically downward, but should be with the angle that tilts to the later interlude area spray atomized water of steel plate head, the angle tilting can be adjusted according to actual conditions, it is good generally making the angle of spray angle and steel plate direction of advance remain on 30-75 degree, with 30-45 degree for better, in general the angle of inclination of all nozzles is set to identical, but sometimes in order to reach better effect, for example, in below mentioned de-scaling effect, for the high nozzle of hydraulic pressure, should make the angle of spray angle and steel plate direction of advance larger better, for the content of this respect, we will be explained in more detail hereinafter.But for the equipment of angle, should be noted that time to avoid cooling water to be sprayed onto on the end face of steel plate.
And for lasting advancing hot rolled steel plate, nozzle can keep stable state, do not need further adjusting.And when approaching the afterbody of steel plate, whether the upright position that measurement of inductance equipment can continue to respond to steel plate afterbody is over first group of nozzle, when sensing first group of nozzle that the upright position of the afterbody of steel plate surpasses, measurement of inductance equipment is delivered to control appliance by the signal sensing, control appliance will cut out first group of atomization cooling device, and first group of nozzle stops spraying cooling water smoke to hot rolled steel plate.
For the shut-in time of second group of atomizing cooling nozzle, in like manner known, because the horizontal pace of hot rolled steel plate is predefined, therefore, do not need extra measurement of inductance equipment yet, only need according to the pace of the interval between nozzle, hot rolled steel plate, just can calculate hot rolled steel plate afterbody and on upright position, surpass the time of second group of atomizing cooling nozzle, when control appliance can surpass second group of atomizing cooling nozzle at the afterbody of hot rolled steel plate, close second group of nozzle, second group of nozzle stops spraying cooling water smoke to hot rolled steel plate.
By that analogy, for the 3rd group, the 4th group ... until the shut-in time of Group X atomizing cooling nozzle all can draw, control appliance also can cut out rear several groups of nozzles successively at corresponding time point, until last group atomizing cooling nozzle is closed, said method is being at least successful aspect minimizing energy consumption.
For measurement of inductance equipment, for responding to the upright position of steel plate head, whether surpass first group of atomizing cooling nozzle, also for responding to the upright position of the afterbody of steel plate, whether surpass first group of atomizing cooling nozzle.And by the control appliance of the signal announcement obtaining.Generally can select laser induced measurement device or other all can.
For control appliance, generally select PLC equipment, i.e. programmable logic controller (PLC) (programmablc logic controller), it is with portion's program storage, for actuating logic computing, sequential control etc.
For adopting the advantage of such scheme, be self-evident, the for example minimizing to energy consumption, although the consumption impact for Water Energy is little, mainly that general on industrial equipment what adopt is all recirculated water, but the energy resource consumption bringing for high-tension apparatus is significantly, so the cost of low-pressure water is lower.Moreover, for final products---near steel plate head and afterbody, tissue is controlled, is very accurate, can obtain the tissue identical with interlude.And the improvement of existing equipment is also relatively easy to, do not need input cost too much, selected parts, for example atomizing cooling nozzle, measurement of inductance equipment, control appliance are also facile from the market.
At least guaranteeing on the basis that hot rolled steel plate cooldown rate is consistent, if can further also make the application's progressive clearer and more definite to the removal of surface of steel plate oxidation cortex.
The application's technical scheme meets cooling to steel plate, can meet again the removal of the scale that surface of steel plate is produced.
We consider due to steel plate before being rolled through the processing of a de-scaling, therefore, the oxide skin producing in the operation of rolling, thickness is little, general thickness at 50 μ m between 100 μ m, the scale producing for this class, while using high hydraulic pressure to process, the extra financial burden that its high hydraulic equipment using produces is heavy.
In this application, we consider the low cost of utilizing low hydraulic pressure, also considers the validity that high hydraulic pressure is removed remaining firecoat.Adopt the hydraulic pressure of two or more different pressures to realize de-scaling.
Concrete operation method: first the steel plate after to rolling sprays with low hydraulic pressure, utilize cooling water to steel plate with oxidation cortex to different the produced deformation of hot conductivity, make to be oxidized cortex and peel off with steel plate generation.
For only using low hydraulic pressure deficiency so that oxide skin layer from steel plate, come off this part, our design is the mode of hydraulic pressure that strengthens gradually in cooling middle employing.So that the oxidation cortex sticking on steel plate with different adhesive force reaches the object coming off completely.
It is that cooling section is divided into three parts that the application illustrates adopted mode, thin speech, be exactly cooling section first three/mono-distance in, atomizing cooling nozzle adopts low pressure to carry out cooling to steel plate, in 1/3rd to 2/3rds distances, during atomizing cooling nozzle adopts, pressure is further cooling to steel plate, and 2/3rds to the distance of ending place, and atomizing cooling nozzle adopts high pressure steel plate to be carried out finally cooling.Wherein under the hydraulic pressure control 30 Palestine and Israel of the atomizing cooling nozzle of first, but can not be lower than 5 bar.Wherein under the hydraulic pressure control 50 Palestine and Israel of the atomizing cooling nozzle of second portion, but can not be lower than 30 bar.Wherein the hydraulic pressure control of the atomizing cooling nozzle of third part is being not less than 100 bar, but can not be higher than 200 bar, otherwise the high cost producing, and can produce further deformation to thinner steel plate, thus product final mass affected.
Equally, also cooling section can be divided into four segments, five segments, or more segment.Yet no matter whole cooling device is divided into several parts artificially, its its theory and design theory is identical, the pressure that after will guaranteeing exactly, a segment all sprays than last segment nozzle is slightly high, yet, the pressure exceeding is to present certain regularity, and must design in certain effective range, industrial design, in II segment to the N-1 segment, the pressure proportional of the atomizing cooling nozzle that the last segment of this segment of the pressure ratio of the atomizing cooling nozzle that each segment is used is used is controlled in the scope of 1.1-1.5:1, preferred proportion is 1.25.But the pressure for atomizing cooling nozzle in N segment should guarantee to be not less than 100 bar, simultaneously can not be higher than 200 bar, and to guarantee that the size of its pressure need be higher than the pressure of the atomizing cooling nozzle of segment second from the bottom.
Meanwhile, also find in practice, when the steel plate of different-thickness is processed, the pressure of atomizer is not the smaller the better, also non-being the bigger the better, but relevant to the thickness of steel plate, analyzing the steel plate that its reason is different-thickness is different at the radiating rate of cooling procedure.Between the pressure of the atomizer that does not have technology to show thickness in prior art and use, should keep certain relation.That is to say, at measurement mechanism, steel plate is realized after online thickness measure, steel plate enters into after-treatment device, in cooling device.
Owing to thering is certain relation between the thickness of steel plate and required cooling speed, therefore, on-line measurement for steel plate thickness, and followed cooling to steel plate, both are closely connected, but industrial and have no the technology that both are associated together and announce, reason be to have no both degrees of correlation closely technology announce, the two is not have technology can realize the equipment that on-line measurement and cooling production can be associated.In this application, thus both are associated together to bring the saving of production cost and reduce energy consumption be unforeseeable.
In cooling device, we are mainly the parameters of adjustment control apparatus, the thickness of the steel plate obtaining when on-line measurement is within the scope of 20-50mm time, and control device is adjusted to the ratio of I segment atomizing cooling nozzle pressure and steel plate thickness between 0.5-0.8 and is advisable.For thickness, be less than 15mm, but the steel plate that is not less than 5mm is when process, the ratio of I segment atomizing cooling nozzle pressure and steel plate thickness is below 0.4, but will guarantee that the minimum pressure of atomizing cooling nozzle can not be lower than 5 bar.And when processing lower than the steel plate of 5mm, I segment atomizing cooling nozzle pressure can selecting be selected as 5 bar, although according to pointing out in aforementioned process that pressure should be lower than 5 bar, but aforementioned for steel plate be that thickness is greater than 5mm, steel plate for thickness lower than 5mm, because its intensity is low, directly adopt the hydraulic pressure higher than 5 bar easily to make it produce deformation, i.e. S shape structure.And for the processing cleannes of scale, be to realize by follow-up high hydraulic pressure, for thickness, be less than the steel plate of 5mm, each interval hydraulic pressure value all removes the limit and is advisable, be that the interval hydraulic pressure of every I is 5 bar, the interval hydraulic pressure of II is 1.2 times of the interval hydraulic pressure of I, i.e. 6 bar, and the interval hydraulic pressure of III is 1.2 times of II interval hydraulic pressure, i.e. 7.2 bar, the like, until N segment, the level of N segment is chosen as 100 bar.
That is to say, cooling device is directly installed after measurement mechanism, can intactly realize the processing to steel plate, avoided measuring in prior art the series of problems such as difficulty is large, energy consumption is high, poor product quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of measurement mechanism embodiment 1.
Fig. 2 is the structural representation of measurement mechanism embodiment 2.
Fig. 3 is the structural representation of measurement mechanism embodiment 3.
The specific embodiment
Embodiment 1: the generous device of measuring for to steel plate, comprising: support 1, be positioned at steel plate 2 tops, and on it, be marked with scale (not shown); Ultrasonic wave emission source 3, its be used for by ultrasonic wave x radiation x to steel plate 2 a bit on; Ultrasonic wave reception sources 4, it is for connecing the ultrasonic wave ray reflecting from steel plate 2; Ultrasonic wave emission source and ultrasonic wave reception sources are all installed on support, and can move in the horizontal direction, and within should processing same vertical plane; Calculating treatmenting equipment 5, it connects respectively ultrasonic wave emission source 3 and ultrasonic wave reception sources 4 by data wire, the thickness that it can calculate steel plate according to the relative position of ultrasonic wave emission source and ultrasonic wave reception sources, x-ray angle.
During work, first ultrasonic wave emission source is fixed to position A, then ultrasonic wave emission source is opened, angle with 30-75 degree is launched ultrasonic wave to steel plate, ultrasonic wave reflects at upper surface of steel plate, ultrasonic wave is in-position B after reflection, if now ultrasonic wave reception sources is placed in to position B, can receive ultrasonic signal.Continue mobile ultrasonic wave reception sources, can also receive ultrasonic signal at position C.Calculating treatmenting equipment can be according to the potential difference of A point position, B point position and C point position, and the emitted angle in ultrasonic wave spontaneous emission source, can obtain by calculating treatmenting equipment the thickness of steel plate.
Take α as incidence angle, β is refraction angle, and v1 is the speed of ultrasonic wave in medium one, and v2 is the speed of ultrasonic wave in medium two, according to law of refraction sin α/v1=sin β/v2, therefore, the ultrasonic wave being penetrated by ultrasonic wave emission source in each medium, experiences reflection and refraction finally turns back to ultrasonic wave reception sources, like this, mobile ultrasonic wave reception sources on support, just the time of ultrasonic wave reentry point can be obtained, the time of return that ultrasonic wave is ordered at B point and C can be obtained, T
band T
c.According to formula d=c Δ tcos θ/2, can calculate the thickness d of steel plate, wherein c is the speed that ultrasonic wave is propagated in each dielectric layer, and θ is ultrasonic wave while entering into each dielectric layer and the angle of normal, and Δ t is the time of propagating in each dielectric layer.
Wherein, ultrasonic wave emission source, ultrasonic wave reception sources, the optional scope of its operating frequency is 1MHz-5MHz, the scope of incidence angle and acceptance angle is in the interval range of 30-75 degree.By regulating the position of ultrasonic wave reception sources, until ultrasonic wave reception sources can receive the signal from ultrasonic wave emission source, now, calculating treatmenting equipment can be according to ultrasonic wave the receiving angle of incident angle, ultrasonic wave reception sources and the horizontal direction of position, ultrasonic wave emission source and the horizontal direction of the speed in different medium, ultrasonic wave emission source and ultrasonic wave reception sources, calculate the wherein thickness of dielectric layer, i.e. the thickness of steel plate.
In addition, in measuring process, due to the inhomogeneities of surface of steel plate, its possibility of result obtaining is inaccurate, therefore, in order to alleviate or to avoid interference factor, can carry out plural number and measure, and its mean value is calculated, thereby obtain more accurate result.
Embodiment 2: on the basis of embodiment 1, after measurement mechanism, connect cooling device, cooling device comprises upside cooling device 6 and downside cooling device 7, on upside cooling device 6 and downside cooling device 7, be evenly provided with several atomizing cooling nozzles, the angular range of atomizing cooling nozzle and steel plate 2 directions of advance is 30-75 degree (not shown).
Cooling device of steel plate also comprises measurement of inductance equipment 8, and measurement of inductance equipment 8 is installed on upside cooling device 6, whether surpasses first group of atomizing cooling nozzle 9-1 of upside cooling device and downside cooling device for responding to the head 2-1 of steel plate 2.
Cooling device of steel plate also comprises control appliance 10, control appliance 10 is connected with measurement of inductance equipment 8, for receiving the signal on measurement of inductance equipment 8, simultaneously, control appliance 10 is also controlled all atomizing cooling nozzles on upside cooling device 6 and downside cooling device 7, control opening and closing of atomizing cooling nozzle, also controlled the size of all hydraulic pressure that atomizing cooling nozzle sprays.
Embodiment 3: on the basis of embodiment 1, after measurement mechanism, connect cooling device, cooling device comprises upside cooling device 6 and downside cooling device 7, on upside cooling device 6 and downside cooling device 7, be evenly provided with several atomizing cooling nozzles, the angular range of atomizing cooling nozzle and steel plate 2 directions of advance is 30-75 degree (not shown).
Cooling device of steel plate also comprises measurement of inductance equipment 8, and measurement of inductance equipment 8 is installed on upside cooling device 6, whether surpasses first group of atomizing cooling nozzle 9-1 of upside cooling device and downside cooling device for responding to the head 2-1 of steel plate 2.
Cooling device of steel plate also comprises control appliance 10, control appliance 10 is connected with measurement of inductance equipment 8, for receiving the signal on measurement of inductance equipment 8, simultaneously, control appliance 10 is also controlled all atomizing cooling nozzles on upside cooling device 6 and downside cooling device 7, control opening and closing of atomizing cooling nozzle, also controlled the size of all hydraulic pressure that atomizing cooling nozzle sprays.
By between upside cooling device and the formed cooling zone of downside cooling device, on average be divided into five segments, its first five/distance in, low pressure atomizing cooling jet is set, in 1/5th to 2/5ths distances, mesolow atomizing cooling nozzle is set, in 2/5ths to 3/5ths distances, low pressure atomizing cooling jet is set, in 3/5ths to 4/5ths distances, mesohigh atomizing cooling nozzle is set, and 4/5ths to the distance of ending place, and high-pressure atomization cooling jet is set.
Wherein, the hydraulic pressure of low pressure atomizing cooling jet is arranged within the scope of 5-30 bar, preferably 5-20 bar, more preferably 8-15 bar; The hydraulic pressure of mesolow atomizing cooling nozzle is arranged within the scope of 30-50 bar, preferably 30-45 bar, more preferably 35-38 bar; The hydraulic pressure of middle pressure atomizing cooling nozzle is arranged within the scope of 50-70 bar, preferably 55-65 bar, more preferably 60-65 bar; The hydraulic pressure of mesohigh atomizing cooling nozzle is arranged within the scope of 70-90 bar, preferably 75-85 bar, more preferably 80-85 bar; The hydraulic pressure of high-pressure atomization cooling jet is arranged within the scope of 100-200 bar, preferably 120-160 bar, more preferably 120-130 bar.
When the measurement mechanism described in use embodiment 1-3 is worked, steel plate is in the process of advancing, open ultrasonic wave emission source, record the position of position A, then mobile ultrasonic wave reception sources, until ultrasonic wave reception sources receives the signal that ultrasonic wave returns on position B and position C, the angle penetrating to steel plate according to ultrasonic wave emission source, calculates the thickness of steel plate.
Thickness for steel plate, can further regulate the parameter of cooling device, when, the thickness of the steel plate obtaining when on-line measurement is within the scope of 20-50mm, control device is adjusted to the ratio of I segment atomizing cooling nozzle pressure and steel plate thickness between 0.5-0.8 and is advisable.For thickness, be less than 15mm, but the steel plate that is not less than 5mm is when process, the ratio of I segment atomizing cooling nozzle pressure and steel plate thickness is below 0.4, but will guarantee that the minimum pressure of atomizing cooling nozzle can not be lower than 5 bar.And when processing lower than the steel plate of 5mm, I segment atomizing cooling nozzle pressure can selecting be selected as 5 bar, although according to pointing out in aforementioned process that pressure should be lower than 5 bar, but aforementioned for steel plate be that thickness is greater than 5mm, steel plate for thickness lower than 5mm, because its intensity is low, directly adopt the hydraulic pressure higher than 5 bar easily to make it produce deformation, i.e. S shape structure.And for the processing cleannes of scale, be to realize by follow-up high hydraulic pressure, for thickness, be less than the steel plate of 5mm, each interval hydraulic pressure value all removes the limit and is advisable, be that the interval hydraulic pressure of every I is 5 bar, the interval hydraulic pressure of II is 1.2 times of the interval hydraulic pressure of I, i.e. 6 bar, and the interval hydraulic pressure of III is 1.2 times of II interval hydraulic pressure, i.e. 7.2 bar, the like, until N segment, the level of N segment is chosen as 100 bar.
Cooling device of steel plate carries out cooling process: open measurement of inductance equipment 8, whether induction steel plate head 2-1 has surpassed first group of atomizing cooling nozzle 9-1 on upright position, when not surpassing, all atomizing cooling nozzles are all processed closed condition, when steel plate head 2-1 surpasses first group of atomizing cooling nozzle 9-1, control appliance 10 is opened first group of atomizing cooling nozzle 9-1, and this group atomizing cooling nozzle 9-1, to the cooling water smoke of steel plate 2 ejection, starts steel plate to lower the temperature.Opening time for second group of atomizing cooling nozzle, because the horizontal pace of hot rolled steel plate is pre-set, therefore, only according to the spacing distance between nozzle, advancing the time of steel plate, just can calculate steel plate head and in upright position, surpass the time of second group of atomizing cooling nozzle, when control appliance 10 can surpass second group of atomizing cooling nozzle at the head 2-1 of hot rolled steel plate, open second group of nozzle, second group of atomizing cooling nozzle starts to eject cooling water smoke to steel plate.The like, until last
group (n group) atomizing cooling nozzle.
And when approaching the afterbody of steel plate, whether the upright position that measurement of inductance equipment 8 can continue induction steel plate afterbody 2-2 surpasses first group of nozzle 9-1, when sensing first group of nozzle 9-1 that the upright position of steel plate afterbody 2-2 surpasses, measurement of inductance equipment 8 is delivered to control appliance 10 by the signal sensing, control appliance 10 will cut out first group of atomizing cooling nozzle 9-1, and first group of atomizing cooling nozzle 9-1 stops spraying cooling water smoke to hot rolled steel plate.
For the shut-in time of second group of atomizing cooling nozzle, because the horizontal pace of hot rolled steel plate is predefined, therefore, do not need extra measurement of inductance equipment yet, only need according to the pace of the interval between nozzle, hot rolled steel plate, just can calculate hot rolled steel plate afterbody and on upright position, surpass the time of second group of atomizing cooling nozzle, when control appliance can surpass second group of atomizing cooling nozzle at the afterbody of hot rolled steel plate, close second group of nozzle, second group of nozzle stops spraying cooling water smoke to hot rolled steel plate.
By that analogy, for the 3rd group, the 4th group ... until n organizes the shut-in time of atomizing cooling nozzle, all can draw, control appliance also can cut out rear several groups of nozzles successively at corresponding time point, until last group atomizing cooling nozzle 9-n is closed.
Claims (8)
1. a measurement mechanism, it,, for online the generous of steel plate being measured, comprising: support, be positioned at steel plate top, on it, be marked with scale; Ultrasonic wave emission source, its be used for by ultrasonic wave x radiation x to steel plate a bit on; Ultrasonic wave reception sources, it is for receiving the ultrasonic wave ray reflecting from steel plate; Ultrasonic wave emission source and ultrasonic wave reception sources are all installed on support, and can move in the horizontal direction, and within same vertical plane; Calculating treatmenting equipment, it connects respectively ultrasonic wave emission source and ultrasonic wave reception sources by data wire, the thickness that it can calculate steel plate according to the relative position of ultrasonic wave emission source and ultrasonic wave reception sources, x-ray angle.
2. measurement mechanism according to claim 1, characterized by further comprising after-treatment device, and after-treatment device can be cooling device.
3. measurement mechanism according to claim 2, after-treatment device comprises upside cooling device, downside cooling device, measurement of inductance equipment and control appliance; Wherein upside cooling device is for carrying out cooling in cooling segment to the upper table of hot rolled steel plate; Downside cooling device is for carrying out cooling in cooling segment to the lower surface of hot rolled steel plate; On upside cooling device and downside cooling device, be evenly provided with several atomizing cooling nozzles, the atomizing cooling nozzle of installing on upside cooling device and downside cooling device is corresponding up and down, and the angular range of the direction of advance of atomizing cooling nozzle and steel plate is 30-75 degree; Wherein measurement of inductance equipment is installed on upside cooling device, whether surpasses first group of atomizing cooling nozzle of upside cooling device and downside cooling device for responding to the head of steel plate; Wherein control appliance is connected with induction measurement devices, can also can control opening and closing of above-mentioned all atomizing cooling nozzles for receiving the signal on measurement of inductance equipment, and the hydraulic pressure size of all atomizing cooling nozzles ejection.
4. measurement mechanism according to claim 3, in wherein between by upside cooling device and the formed cooling zone of downside cooling device, its first three/distance in, low pressure atomizing cooling jet is set, in 1/3rd to 2/3rds distances, middle pressure atomizing cooling nozzle is set, and 2/3rds to the distance of ending place, and high-pressure atomization cooling jet is set; Wherein under the hydraulic pressure control 30 Palestine and Israel of low pressure atomizing cooling jet, but can not be lower than 5 bar; Wherein, press under the hydraulic pressure control 50 Palestine and Israel of atomizer, but can not be lower than 30 bar; Wherein the hydraulic pressure control of high-pressure atomization cooling jet is being not less than 100 bar, but can not be higher than 200 bar.
5. measurement mechanism according to claim 3, by by upside cooling device and downside cooling device institute shape cooling zone between be divided into N segment; Wherein in I segment under the hydraulic pressure control 30 Palestine and Israel of atomizing cooling nozzle, but can not be lower than 5 bar; In the scope of II segment to the N-1 segment, the pressure proportional of the atomizing cooling nozzle that the pressure of the atomizing cooling nozzle that each segment is used and the last segment of this segment are used is controlled in the scope of 1.1-1.5:1; Pressure for atomizing cooling nozzle in N segment should guarantee to be not less than 100 bar, simultaneously can not be higher than 200 bar, and to guarantee that the size of its pressure need be higher than the pressure of the atomizing cooling nozzle of (N-1) segment.
6. according to the measurement mechanism described in claim 4 or 5, the thickness of the steel plate obtaining when on-line measurement is within the scope of 20-50mm time, and control device is adjusted to the ratio of I segment atomizing cooling nozzle pressure and steel plate thickness between 0.5-0.8 and is advisable.
7. according to the measurement mechanism described in claim 4 or 5, the thickness of the steel plate obtaining when on-line measurement is less than 15mm, but when the steel plate that is not less than 5mm is processed, the ratio of I segment atomizing cooling nozzle pressure and steel plate thickness is below 0.4, but will guarantee that the minimum pressure of atomizing cooling nozzle can not be lower than 5 bar.
8. the method for using measurement mechanism to process steel plate, comprises the thickness of measuring steel plate with support, ultrasonic wave emission source, ultrasonic wave reception sources, calculating treatmenting equipment; Then according to the thickness of the steel plate measuring, use and at least comprise that the cooling device of atomizing cooling nozzle carries out cooling processing to steel plate.
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| CN105124745A (en) * | 2015-08-31 | 2015-12-09 | 中国烟草总公司广东省公司 | Detecting device and method for tobacco leaf thickness during tobacco leaf grading |
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| CN105290122B (en) * | 2015-08-20 | 2017-09-12 | 张守武 | A kind of AGC system measurer for thickness of RBF network supports |
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| CN104841703A (en) | 2015-08-19 |
| CN104785547B (en) | 2017-11-24 |
| CN103551399B (en) | 2015-08-26 |
| CN104841703B (en) | 2017-11-24 |
| CN104785547A (en) | 2015-07-22 |
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