CN104785547A - Measuring device - Google Patents
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- CN104785547A CN104785547A CN201510178847.3A CN201510178847A CN104785547A CN 104785547 A CN104785547 A CN 104785547A CN 201510178847 A CN201510178847 A CN 201510178847A CN 104785547 A CN104785547 A CN 104785547A
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- 238000001816 cooling Methods 0.000 claims abstract description 193
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 169
- 239000010959 steel Substances 0.000 claims abstract description 169
- 238000012545 processing Methods 0.000 claims abstract 5
- 238000005259 measurement Methods 0.000 claims description 55
- 238000000034 method Methods 0.000 claims description 29
- 230000006698 induction Effects 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000012805 post-processing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000779 smoke Substances 0.000 description 9
- 239000007921 spray Substances 0.000 description 9
- 239000000498 cooling water Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention relates to a measuring device which is used for measuring the width and the thickness of a steel plate on line. The measuring device comprises a support, an ultrasonic wave transmission source, an ultrasonic wave receiving resource and a calculating processing device; the calculating processing device is connected with the ultrasonic wave transmission source and the ultrasonic wave receiving resource through datelines, and the thickness of the steel plate can be calculated through the calculating processing device according to the relative positions and ray angles of the ultrasonic wave transmission source and the ultrasonic wave receiving resource; the measuring device further comprises a post-processing cooling device which can directly conduct cooling processing on the steel plate according to measuring results. The measuring device is high in accuracy, convenient, rapid, low in energy consumption of the cooling device and good in descaling effect.
Description
The application is the applying date is on November 07th, 2013, and application number is 201310544985.X, and denomination of invention is the divisional application of the patent application of " measurement mechanism ".
Technical field
The application relates to a kind of measurement mechanism, particularly relates to a kind of online generous measurement mechanism of steel plate.
Background technology
In field of metallurgy, generally involve and the thickness of steel plate is measured.When the gauge of sheet material workpiece is extremely important, usually 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 be under different temperatures and state, traditional contact measuring apparatus is also unreliable.If during the steel plate process condition of high temperature, its measurement is become impossible.And for contactless measurement mechanism, be also in the blank field of research at present.In addition, how steel plate is processed further after the thickness measure of steel plate for online, also there is no referential experience both at home and abroad at present.
Summary of the invention
The application provides the generous measurement mechanism of steel plate that a kind of structure is simple, detection is quick, accuracy of detection is high, and can suitable method be adopted to carry out post processing to steel plate according to measurement result further.
The principle Main Basis ultrasonic wave measured has stronger penetrability to solid dielectric, and the distant characteristic propagated in media as well, adopt ultrasonic wave principle to measure steel plate.
First the application provides a kind of generous measurement mechanism, comprising: support, is positioned at above steel plate, it is 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 receives source, and it is for receiving the ultrasonic wave ray reflected from steel plate.
It is rack-mount that ultrasonic wave emission source and ultrasonic wave receive source, and can move in the horizontal direction, and should be within same vertical plane.
Calculating treatmenting equipment: connect ultrasonic wave emission source and ultrasonic wave respectively by data wire and receive source, it can by the thickness that ultrasonic wave emission source and ultrasonic wave receive the relative position in source, x-ray angle calculates steel plate.
The method calculated is apparent, only does simple declaration at this.Because ultrasonic wave is when each Propagation, the relation of refraction angle and angle of reflection meets the law of refraction, namely when ripple is through the boundary of two isotropic mediums, direction of wave travel changes, and meets: the sine of incidence angle i equals the sine of refraction angle θ divided by the speed of ripple at the second medium divided by ripple in the speed of the first medium.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 then illustrates that incidence angle equals angle of reflection, and the size of projectional angle is decided by medium W1, the ratio of the speed v 1, v2 of W2; 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 explanation in more detail at this.
Briefly explain the method for measurement below: first mounting ultrasonic emission source is to position A, then ultrasonic wave emission source is opened, ultrasonic wave is launched to steel plate with the angle of 30-75 degree, ultrasonic wave reflects at upper surface of steel plate, ultrasonic wave is in-position B after reflection, if the source that now received by ultrasonic wave is placed in position B, ultrasonic signal can be received.In reality, we are except receiving except ultrasonic signal at position B, ultrasonic signal can also be received at position C, this is the ultrasonic wave owing to 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, thus in lower surface generation reflex, therefore, also ultrasonic signal can be received at position C.Calculating treatmenting equipment can according to the potential difference of A point position, B point position and C point position, and the angle emitted by ultrasonic wave spontaneous emission source, namely obtains the thickness of steel plate by calculating treatmenting equipment.
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 penetrated by ultrasonic wave emission source in each medium, experience reflection and refraction finally turns back to ultrasonic wave reception source, like this, on support, mobile ultrasonic wave receives source, just can obtain the time of ultrasonic wave reentry point, the time of return of ultrasonic wave at B point and C point 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 when 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 receive source, and its operating frequency range of choices is 1MHz-5MHz, and the scope of incidence angle and acceptance angle is in the interval range of 30-75 degree.By the position regulating ultrasonic wave to receive source, until ultrasonic wave reception source can receive the signal from ultrasonic wave emission source, now, calculating treatmenting equipment can according to the receiving angle that the speed of ultrasonic wave in different medium, ultrasonic wave emission source and ultrasonic wave receive the position in source, the incident angle of ultrasonic wave emission source and horizontal direction, ultrasonic wave receive source and horizontal direction, calculate the thickness of its 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 obtained is inaccurate, therefore, in order to alleviate or avoid interference factor, can carry out plural number and measure, and calculate its mean value, thus obtain more accurate result.
Use this measurement mechanism, one need not destroy the structure of steel plate, and can measure at any time, obtains result instantaneously.It can be widely used in the on-line measurement of hot rolled steel plate.
After two of the object of the application is to obtain the thickness of steel plate, post processing can be carried out to steel plate according to measured result, the device that post processing uses can be cooling device, that is thickness measure is carried out to steel plate after roughing, and then select suitable technological parameter to process steel plate according to measurement result.
As one of parts requisite on cooling device " nozzle ", what we had order ground selects atomizing cooling nozzle, and this nozzle has conventional understanding in this area, there is no particular meaning.Select the object of atomizing cooling nozzle to be to select current directly to the unstability easily produced during steel plate process for avoiding, and atomizing cooling nozzle have higher controllability.Therefore, if no special instructions, the nozzle occurred is atomizing cooling nozzle.
For the ease of speed and the stability of controlled cooling model process, the basic setup mode of cooling device is for comprising upper and lower both sides cooling device.I.e. upside cooling device, for cooling at the upper surface of cooling segment to hot rolled steel plate; Downside cooling device, for cooling at the lower surface of cooling segment to hot rolled steel plate.Upper and lower side cooling device is evenly provided with several atomizing cooling nozzles, spacing distance between the quantity of nozzle, nozzle is also without clear limit, keep the spacing between nozzle identical, such as controllable quantity is within the scope of 10-100, the industrial equipment directly selected in existing enterprise, in addition, the atomizing cooling nozzle one_to_one corresponding in vertical direction ensured on the cooling device of upper and lower both sides is also needed.
In general, hot rolled steel plate is when just entering cooling section, if when only using atomizing cooling nozzle to lower the temperature to steel plate, still the problem contacted with cooling water while that head and afterbody can not being avoided to be equivalent to there are three, cause the cooling velocity of cooling velocity higher than interlude of head and afterbody, when cooling rate cannot be consistent, the otherness in steel plate tissue, performance namely can be produced.
In other words, exactly when steel plate carries out cooling section, by controlling the cooling water inflow during cooling of hot rolled steel plate head, afterbody and interlude, reducing the temperature difference of hot rolled steel plate head, afterbody and interlude, improving the uniformity of monoblock hot rolled steel plate rate of temperature fall.
The means specifically taked comprise: on the control appliance of cooling device, use control appliance Control Nozzle opening and closed, equally, control appliance also can the ejection pressure of Control Nozzle.
For stating conveniently, the nozzle that upper and lower both sides cooling device is corresponding on upright position can be defined as first group of atomizing cooling nozzle, second group of atomizing cooling nozzle by successively ... n-th group of 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 more than first group of atomizing cooling nozzle, the afterbody that also may be used for induction heat rolled steel plate whether on upright position more than first group of atomizing cooling nozzle.
During work, hot rolled steel plate moves forward in substantially horizontal directions under the drive of lathe, the measurement of inductance equipment being arranged on cooling device the initial segment position, upside is started working, the head of induction heat rolled steel plate whether on upright position more than first group of atomizing cooling nozzle, when measurement of inductance equipment senses that the head of hot rolled steel plate exceedes, pass the signal along to control appliance, control appliance will open first group of atomizing cooling nozzle, the water smoke that first group of nozzle starts to cool to hot rolled steel plate ejection.
For the opening time of second group of atomizing cooling nozzle, because the horizontal pace of hot rolled steel plate presets, therefore, do not need to reoffer extra measurement of inductance equipment, interval between only needing according to nozzle, the pace of hot rolled steel plate, just can calculate hot rolled steel plate head time more than second group of atomizing cooling nozzle on upright position, control appliance can when the head of hot rolled steel plate be more than second group of atomizing cooling nozzle, open second group of nozzle, the water smoke that second group of nozzle starts to cool to hot rolled steel plate ejection.
By that analogy, for the 3rd group, the 4th group ... until the opening time of last group atomizing cooling nozzle all can draw, rear several groups of nozzles also can be opened at corresponding time point by control appliance successively.
That is, only have when the upright position of steel plate head exceedes a certain group of nozzle, the switch of the nozzle be exceeded just can be opened.And eject in order to avoid nozzle to the end face of steel plate the cooling velocity that cooling water smoke affects steel plate head, nozzle should not spray with direction vertically downward, but should with the angle tilted to the later interlude area spray atomized water of steel plate head, the angle tilted can adjust according to actual conditions, it is good for generally making the angle of spray angle and steel plate direction of advance remain on 30-75 degree, be better with 30-45 degree, in general the angle of inclination of all nozzles is set to identical, but sometimes in order to reach better effect, such as in hereafter mentioned de-scaling effect, the angle of spray angle and steel plate direction of advance should be made better larger for the nozzle that hydraulic pressure is high, for this respect content we will be explained in more detail hereinafter.But for the equipment of angle, should be noted that time cooling water will be avoided 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 adjustment.And when afterbody close to steel plate, whether measurement of inductance equipment can continue the upright position of induction steel plate tail more than first group of nozzle, when first group of nozzle that the upright position of the afterbody sensing steel plate exceedes, measurement of inductance equipment by the signal transmission that senses to control appliance, control appliance is by cut out first group atomization cooling device, and first group of nozzle stops the water smoke spraying cooling 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 presets, therefore, extra measurement of inductance equipment is not needed yet, interval between only needing according to nozzle, the pace of hot rolled steel plate, just can calculate hot rolled steel plate afterbody time more than second group of atomizing cooling nozzle on upright position, control appliance can when the afterbody of hot rolled steel plate be more than second group of atomizing cooling nozzle, close second group of nozzle, the water smoke that second group of nozzle stops cooling to hot rolled steel plate ejection.
By that analogy, for the 3rd group, the 4th group ... until the shut-in time of Group X atomizing cooling nozzle all can draw, rear several groups of nozzles also can be closed at corresponding time point by control appliance successively, until closed by last group atomizing cooling nozzle, said method is at least successful in minimizing energy consumption.
For measurement of inductance equipment, for whether responding to the upright position of steel plate head more than first group of atomizing cooling nozzle, also for whether responding to the upright position of the afterbody of steel plate more than first group of atomizing cooling nozzle.And the control appliance of signal announcement that will obtain.Generally can select laser induced measurement device or other.
For control appliance, generally select PLC device, i.e. programmable logic controller (PLC) (programmablc logic controller), it is with portion's program storage, for actuating logic computing, and sequential control etc.
Advantage for employing such scheme is self-evident, such as to the minimizing of energy consumption, although little for the consumption impact of Water Energy, what mainly industrial equipment generally adopts is all recirculated water, but be obvious for the energy resource consumption that high-tension apparatus brings, therefore the cost of low-pressure water is lower.Moreover, for final products---the controlling of steel plate head and the neighbouring tissue of afterbody, is very accurate, can obtains 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, such as atomizing cooling nozzle, measurement of inductance equipment, control appliance are also facile from the market.
At least ensure that on the basis that hot rolled steel plate cooldown rate is consistent, if can also make the progressive of the application definitely to the removal of surface of steel plate oxide scale layer further.
Namely the technical scheme of the application meets to steel plate cooling, can meet again the removal to the scale that surface of steel plate produces.
We consider due to steel plate before being rolled through the process of a de-scaling, therefore, the oxide skin produced in the operation of rolling, thickness is little, general thickness is between 50 μm to 100 μm, for the scale of this kind of generation, when using high hydraulic pressure to process, the extra financial burden that its high hydraulic equipment used produces is heavy.
In this application, namely we consider the low cost utilizing low hydraulic pressure, also considers the validity that high hydraulic pressure is removed remaining firecoat.Namely the hydraulic pressure of two or more different pressures is adopted to realize de-scaling.
Concrete operation method: first spray the steel plate after rolling with low hydraulic pressure, utilizes cooling water to steel plate produced deformation different from the conductivity of oxide scale layer to heat, oxide scale layer and steel plate is peeling.
Come off from steel plate for only using low hydraulic pressure to be not enough to make oxide scale layer this part, our design is in cooling, adopt the mode strengthening hydraulic pressure gradually.The object come off completely is reached to make the oxide scale layer sticked on steel plate with different adhesive force.
The application illustrates that adopted mode cooling section is divided into three parts, thin speech it, be exactly cooling section first three/mono-distance in, atomizing cooling nozzle adopts low pressure to cool steel plate, in 2/1 to three/3rds distances, atomizing cooling nozzle is pressed in adopting and is cooled further steel plate, and in the distance at three/bis-to ending place, atomizing cooling nozzle adopts high pressure finally to cool steel plate.Wherein the hydraulic pressure control of the atomizing cooling nozzle of Part I is under 30 Palestine and Israels, but can not lower than 5 bar.Wherein the hydraulic pressure control of the atomizing cooling nozzle of Part II is under 50 Palestine and Israels, but can not lower than 30 bar.Wherein the hydraulic pressure control of the atomizing cooling nozzle of Part III is being not less than 100 bar, but can not higher than 200 bar, otherwise the high cost produced, and further deformation can be produced to thinner steel plate, thus affect product final mass.
Equally, also cooling section can be divided into four segments, five segments, or more segment.But no matter whole cooling device is divided into several part artificially, its its theory and design theory is identical, the pressure that after will ensureing exactly, a segment all sprays than last segment nozzle is slightly high, but, the pressure exceeded presents certain regularity, and must design in certain effective range, industrial design, from II segment in N-1 segment, the pressure proportional of the atomizing cooling nozzle that the last segment of this segment of pressure ratio of the atomizing cooling nozzle that each segment uses uses controls in the scope of 1.1-1.5:1, preferred proportion is 1.25.But should ensure to be not less than 100 bar for the pressure of atomizing cooling nozzle in N segment, higher than 200 bar, and can not will ensure that the size of its pressure need higher than the pressure of the atomizing cooling nozzle of segment second from the bottom simultaneously.
, also find in practice, when the steel plate of different-thickness is processed meanwhile, the pressure of atomizer is not the smaller the better, also to be non-ly the bigger the better, but relevant to the thickness of steel plate, analyze its reason and be that the steel plate of different-thickness is different at the radiating rate of cooling procedure.There is not technology to show between thickness and the pressure of atomizer used in prior art and should keep certain relation.That is, after measurement mechanism realizes online thickness measure to steel plate, steel plate enters into after-treatment device, namely in cooling device.
Owing to there is certain relation between the thickness of steel plate and the speed of required cooling, therefore, for the on-line measurement of steel plate thickness, and the followed cooling to steel plate, both are closely connected, but industrially and have no the technology both be associated together and announce, reason be to have no both degrees of correlation closely technology announce, the two is not have technology to can be implemented in line and measures and the equipment that can associate is produced in cooling.In this application, it is unforeseeable for both being associated together thus bringing the saving of production cost and reduce energy consumption.
In cooling device, the parameter of our mainly adjustment control apparatus, when the thickness of the steel plate that on-line measurement obtains is within the scope of 20-50mm, the proportion adjustment of I segment atomizing cooling nozzle pressure and steel plate thickness is be advisable between 0.5-0.8 by control device.15mm is less than for thickness, but when the steel plate being not less than 5mm processes, the ratio of I segment atomizing cooling nozzle pressure and steel plate thickness is less than 0.4, but will ensures that the minimum pressure of atomizing cooling nozzle can not lower than 5 bar.And when the steel plate lower than 5mm is processed, I segment atomizing cooling nozzle pressure selecting can be selected as 5 bar, although according to pointing out in aforementioned process that pressure should lower than 5 bar, but aforementioned for steel plate be that thickness is greater than 5mm, for the steel plate of thickness lower than 5mm, because its intensity is low, the hydraulic pressure higher than 5 bar is directly adopted easily to make it produce deformation, i.e. S shape structure.And for the process cleannes of scale, be realized by follow-up high hydraulic pressure, namely thickness be less than to the steel plate of 5mm, the hydraulic pressure value in each interval all removes the limit is advisable, namely 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 the interval hydraulic pressure of II, i.e. 7.2 bar, the like, until N segment, the level of N segment is chosen as 100 bar.
That is, after measurement mechanism, directly cooling device is installed, intactly can realizes the process to steel plate, avoid in prior art series of problems such as measuring 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.
Detailed description of the invention
Embodiment 1: for the generous device measured to steel plate, comprising: support 1, be positioned at above steel plate 2, 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 receives source 4, and it is for connecing the ultrasonic wave ray will reflected from steel plate 2; Ultrasonic wave emission source and ultrasonic wave receive source and are all installed on support, and can move in the horizontal direction, and should process within same vertical plane; Calculating treatmenting equipment 5, it connects ultrasonic wave emission source 3 and ultrasonic wave respectively by data wire and receives source 4, and it can according to the thickness that ultrasonic wave emission source and ultrasonic wave receive the relative position in source, x-ray angle calculates steel plate.
During work, first ultrasonic wave emission source is fixed to position A, then ultrasonic wave emission source is opened, ultrasonic wave is launched to steel plate with the angle of 30-75 degree, ultrasonic wave reflects at upper surface of steel plate, ultrasonic wave is in-position B after reflection, if the source that now received by ultrasonic wave is placed in position B, can receive ultrasonic signal.Continue mobile ultrasonic wave and receive source, ultrasonic signal can also be received at position C.Calculating treatmenting equipment can according to the potential difference of A point position, B point position and C point position, and the angle emitted by ultrasonic wave spontaneous emission source, namely obtains the thickness of steel plate by calculating treatmenting equipment.
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 penetrated by ultrasonic wave emission source in each medium, experience reflection and refraction finally turns back to ultrasonic wave reception source, like this, on support, mobile ultrasonic wave receives source, just can obtain the time of ultrasonic wave reentry point, the time of return of ultrasonic wave at B point and C point 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 of ultrasonic wave propagation in each dielectric layer, and θ is ultrasonic wave when 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 receive source, and its operating frequency range of choices is 1MHz-5MHz, and the scope of incidence angle and acceptance angle is in the interval range of 30-75 degree.By the position regulating ultrasonic wave to receive source, until ultrasonic wave reception source can receive the signal from ultrasonic wave emission source, now, calculating treatmenting equipment can according to the receiving angle that the speed of ultrasonic wave in different medium, ultrasonic wave emission source and ultrasonic wave receive the position in source, the incident angle of ultrasonic wave emission source and horizontal direction, ultrasonic wave receive source and horizontal direction, calculate the thickness of its 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 obtained is inaccurate, therefore, in order to alleviate or avoid interference factor, can carry out plural number and measure, and calculate its mean value, thus obtain more accurate result.
Embodiment 2: on the basis of embodiment 1, cooling device is connected after measurement mechanism, cooling device comprises upside cooling device 6 and downside cooling device 7, upside cooling device 6 and downside cooling device 7 are evenly provided with several atomizing cooling nozzles, and the angular range of atomizing cooling nozzle and steel plate 2 direction 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 the cooling device 6 of upside, and whether the head 2-1 for responding to steel plate 2 exceedes first group of atomizing cooling nozzle 9-1 of upside cooling device and downside cooling device.
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 also controls all atomizing cooling nozzles on upside cooling device 6 and downside cooling device 7, namely control the opening and closedown of atomizing cooling nozzle, also control all atomizing cooling nozzles spray the size of hydraulic pressure.
Embodiment 3: on the basis of embodiment 1, cooling device is connected after measurement mechanism, cooling device comprises upside cooling device 6 and downside cooling device 7, upside cooling device 6 and downside cooling device 7 are evenly provided with several atomizing cooling nozzles, and the angular range of atomizing cooling nozzle and steel plate 2 direction 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 the cooling device 6 of upside, and whether the head 2-1 for responding to steel plate 2 exceedes first group of atomizing cooling nozzle 9-1 of upside cooling device and downside cooling device.
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 also controls all atomizing cooling nozzles on upside cooling device 6 and downside cooling device 7, namely control the opening and closedown of atomizing cooling nozzle, also control all atomizing cooling nozzles spray the size of hydraulic pressure.
Between the cooling zone formed by upside cooling device and downside cooling device, on average be divided into five segments, its first five/distance in, low pressure atomizing cooling jet is set, in 2/1 to five/5ths distances, mesolow atomizing cooling nozzle is set, in 3/2 to five/5ths distances, low pressure atomizing cooling jet is set, in 4/3 to five/5ths distances, mesohigh atomizing cooling nozzle is set, in the distance at five/tetra-to ending place, 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, preferred 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, preferred 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, preferred 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, preferred 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, preferred 120-160 bar, more preferably 120-130 bar.
When using the measurement mechanism work described in embodiment 1-3, steel plate is in advance process, open ultrasonic wave emission source, record the position of position A, then move ultrasonic wave and receive source, until ultrasonic wave reception source receives the signal that ultrasonic wave returns on position B and position C, according to the angle that ultrasonic wave emission source penetrates to steel plate, calculate the thickness of steel plate.
For the thickness of steel plate, the parameter of cooling device can be regulated further, such as, when the thickness of the steel plate that on-line measurement obtains is within the scope of 20-50mm, the proportion adjustment of I segment atomizing cooling nozzle pressure and steel plate thickness is be advisable between 0.5-0.8 by control device.15mm is less than for thickness, but when the steel plate being not less than 5mm processes, the ratio of I segment atomizing cooling nozzle pressure and steel plate thickness is less than 0.4, but will ensures that the minimum pressure of atomizing cooling nozzle can not lower than 5 bar.And when the steel plate lower than 5mm is processed, I segment atomizing cooling nozzle pressure selecting can be selected as 5 bar, although according to pointing out in aforementioned process that pressure should lower than 5 bar, but aforementioned for steel plate be that thickness is greater than 5mm, for the steel plate of thickness lower than 5mm, because its intensity is low, the hydraulic pressure higher than 5 bar is directly adopted easily to make it produce deformation, i.e. S shape structure.And for the process cleannes of scale, be realized by follow-up high hydraulic pressure, namely thickness be less than to the steel plate of 5mm, the hydraulic pressure value in each interval all removes the limit is advisable, namely 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 the interval hydraulic pressure of II, i.e. 7.2 bar, the like, until N segment, the level of N segment is chosen as 100 bar.
The process that cooling device of steel plate carries out cooling is: open measurement of inductance equipment 8, whether induction steel plate head 2-1 has exceeded first group of atomizing cooling nozzle 9-1 on upright position, when not exceeding, all atomizing cooling nozzles all process closed condition, when steel plate head 2-1 is more than first group of atomizing cooling nozzle 9-1, first group of atomizing cooling nozzle 9-1 opened by control appliance 10, and this group atomizing cooling nozzle 9-1 sprays cooling water smoke to steel plate 2, starts to lower the temperature to steel plate.For the opening time of 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, the advance time of steel plate, just can calculate steel plate head in upright position the time more than second group of atomizing cooling nozzle, control appliance 10 can when the head 2-1 of hot rolled steel plate be more than second group of atomizing cooling nozzle, open second group of nozzle, second group of atomizing cooling nozzle starts the water smoke ejecting cooling to steel plate.The like, until last group (n-th group) atomizing cooling nozzle.
And when afterbody close to steel plate, whether measurement of inductance equipment 8 can continue the upright position of induction steel plate tail 2-2 more than first group of nozzle 9-1, when sensing first group of nozzle 9-1 that the upright position of steel plate tail 2-2 exceedes, measurement of inductance equipment 8 by the signal transmission that senses to control appliance 10, control appliance 10 is by cut out first group of atomizing cooling nozzle 9-1, and first group of atomizing cooling nozzle 9-1 stops the water smoke spraying cooling 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 presets, therefore, extra measurement of inductance equipment is not needed yet, interval between only needing according to nozzle, the pace of hot rolled steel plate, just can calculate hot rolled steel plate afterbody time more than second group of atomizing cooling nozzle on upright position, control appliance can when the afterbody of hot rolled steel plate be more than second group of atomizing cooling nozzle, close second group of nozzle, the water smoke that second group of nozzle stops cooling to hot rolled steel plate ejection.
By that analogy, for the 3rd group, the 4th group ... until the shut-in time of n-th group of atomizing cooling nozzle all can draw, rear several groups of nozzles also can be closed at corresponding time point by control appliance successively, until closed by last group atomizing cooling nozzle 9-n.
Claims (3)
1. a measurement mechanism, it is measured the generous of steel plate for online, comprising: support, is positioned at above steel plate, it is 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 receives source, and it is for receiving the ultrasonic wave ray reflected from steel plate; Ultrasonic wave emission source and ultrasonic wave receive source and are all installed on support, and can move in the horizontal direction, and are within same vertical plane; Calculating treatmenting equipment, it connects ultrasonic wave emission source and ultrasonic wave respectively by data wire and receives source, and it can according to the thickness that ultrasonic wave emission source and ultrasonic wave receive the relative position in source, x-ray angle calculates steel plate;
Described measurement mechanism also comprises after-treatment device, and after-treatment device can be cooling device;
Described cooling device comprises upside cooling device, downside cooling device, measurement of inductance equipment and control appliance; Wherein upside cooling device is used for cooling the upper table of hot rolled steel plate in cooling segment; Downside cooling device is used for cooling at the lower surface of cooling segment to hot rolled steel plate; Upside cooling device and downside cooling device are evenly provided with several atomizing cooling nozzles, on upside cooling device and downside cooling device, the atomizing cooling nozzle installed 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 the cooling device of upside, and whether the head for responding to steel plate exceedes first group of atomizing cooling nozzle of upside cooling device and downside cooling device; Wherein control appliance is connected with induction measurement devices, may be used for receiving the signal on measurement of inductance equipment, also can control opening and closedown of above-mentioned all atomizing cooling nozzles, and the hydraulic pressure size of all atomizing cooling nozzle ejections;
N number of segment is divided into by between the cooling zone formed by upside cooling device and downside cooling device, the thickness of the steel plate obtained when on-line measurement is less than 15mm, but when the steel plate being not less than 5mm processes, the ratio of I segment atomizing cooling nozzle pressure and steel plate thickness is less than 0.4, but will ensure that the minimum pressure of atomizing cooling nozzle can not lower than 5 bar.
2. measurement mechanism according to claim 1, is characterized in that N equals 3, or equals 4, or equal 5.
3. the method using the equipment described in claim 1-2 any one to process steel plate, comprises and uses support, ultrasonic wave emission source, ultrasonic wave to receive source, calculating treatmenting equipment to measure the thickness of steel plate; Then the cooling device at least comprising atomizing cooling nozzle is used to carry out cooling processing to steel plate according to the thickness measuring the steel plate obtained.
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| CN105124745B (en) * | 2015-08-31 | 2016-11-16 | 中国烟草总公司广东省公司 | The detection method of Nicotiana tabacum L. thickness in a kind of tobacco leaf grading |
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Also Published As
| Publication number | Publication date |
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| CN103551399B (en) | 2015-08-26 |
| CN103551399A (en) | 2014-02-05 |
| CN104841703B (en) | 2017-11-24 |
| CN104785547B (en) | 2017-11-24 |
| CN104841703A (en) | 2015-08-19 |
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