CN103451410A - Method for adjusting velocity curve of heating furnace stepping beam quickly - Google Patents
Method for adjusting velocity curve of heating furnace stepping beam quickly Download PDFInfo
- Publication number
- CN103451410A CN103451410A CN201310446836XA CN201310446836A CN103451410A CN 103451410 A CN103451410 A CN 103451410A CN 201310446836X A CN201310446836X A CN 201310446836XA CN 201310446836 A CN201310446836 A CN 201310446836A CN 103451410 A CN103451410 A CN 103451410A
- Authority
- CN
- China
- Prior art keywords
- walking beam
- curve
- speed
- velocity
- stepping beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000010438 heat treatment Methods 0.000 title abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 37
- 230000001133 acceleration Effects 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims description 18
- 238000004364 calculation method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 16
- 238000004590 computer program Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 206010000372 Accident at work Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003359 percent control normalization Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention provides a method for adjusting the velocity curve of a heating furnace stepping beam quickly. The method comprises the following steps that a velocity reference curve of the stepping beam is obtained; the relation between the size of an opening of a proportional valve of the stepping beam and the speed of the proportional valve of the stepping beam is calculated according to velocity feedback of a displacement sensor of the stepping beam, and the velocity of a dead area of the proportional valve of the stepping beam is measured; the speed of the stepping beam, the acceleration of the stepping beam and the stepping period of the stepping beam are calculated according to the velocity reference curve of the stepping beam and the stability and time requirements in the steel supporting process; the relation between the velocity and the size of the opening of the proportional valve is tested and all positions of the curve of the stepping beam and all speed parameters of the velocity curve of the stepping beam are set according to the velocity reference curve of the stepping beam. By means of the method for adjusting the velocity curve of the heating furnace stepping beam quickly, quick adjustment and set of the curve of the stepping beam can be realized, the calculation method is simple and easy to implement, rich experience of technicists is not relied on, and good adaptability and convenience are achieved.
Description
Technical field
The present invention relates to technical field of steel rolling, relate in particular to a kind of process furnace walking beam velocity curve fast adjustment method.
Background technology
At present, important production unit process furnace in steel rolling industry, can be divided into pusher-type furnace and walking beam furnace, wherein, pusher-type furnace exist length short, yield poorly and scaling loss is large and the problem such as steel bonding can occur when misoperation, thereby be difficult to realize the shortcoming that is difficult to overcome of automatization, so application industrially has been subject to larger restriction.
And walking beam heating furnace does regular-shape motion and transfer steel billet due to the stepping mechanism by special-purpose in stove, it has effectively eliminated the slide rail scratch, and the heating section of steel billet has a narrow range of temperature, and homogeneous heating.Also possess that furnace superintendent is unrestricted, output is high and the characteristics such as production operation is flexible, its production meets the processing requirement of high yield, high-quality, low consumption, energy-conservation, nuisanceless and production operation automatization, thereby is widely used in industry.
The walking beam of the walking beam heating furnace of prior art has been realized automatization, and the Negotiation speed curve is controlled the motion of walking beam.And in the debug process of the velocity curve of walking beam, comparatively serious dependence machinery or hydraulic technique personnel's working experience often, and need to be according to actual positional relationship and the stability of walking beam, repeatedly test and adjust the relation between walking beam acceleration and deceleration distance and velocity variations, until can meeting, velocity curve makes the walking beam smooth running, and meet suitable move distance, and obtain the suitable requirements such as stepping period.
Therefore, when the commissioning staff does not have experience, and unfamiliar machinery or hydraulic pressure personnel are difficult to complete fast the debugging of walking beam velocity curve while being instructed.In addition, in process of production, in the time of need to be changed if walking beam valve platform or proportional amplifier plate damage, because the parameters such as the characteristic of different walking beam valve platforms and dead band velocity magnitude are not identical, therefore original velocity curve just can not adapt to fully, and need to again debug a set of walking beam parameter of curve.This is very difficult for general electric maintenance personnel, and it is also very difficult good by the parameter adjustment of stepping curve to take a long time.
In addition, with regard to the dead band on proportional amplifier plate and slope are adjusted knob, because the knob of existing operating device is not digital setting, therefore, every proportional amplifier plate is difficult to be adjusted on all four output dead band and slope value.This is with regard to the corresponding output valve that has caused different proportional amplifier plates nuance slightly, and its output characteristic exists different.Therefore, the nuance difference arranged due to proportional amplifier plate after proportional amplifier plate is changed, and the corresponding velocity curve that causes can not adapt to fully.
By craft, debug fully by the technician, not only increased greatly the difficulty of equipment routine maintenance, and affected normal production efficiency, production cost is increased.
Therefore, how the simple and convenient walking beam curve that process furnace is controlled is automatically adjusted just becomes problem demanding prompt solution.
Summary of the invention
For solving prior art, the automatic walking beam curve of controlling of process furnace is adjusted to too complicated problem, be the invention provides a kind of process furnace walking beam velocity curve fast adjustment method, comprised the following steps:
Obtain walking beam speed reference curve;
According to the speed feedback calculated step beam proportional valve openings of sizes of walking beam displacement sensor and the relation of speed, and the dead band velocity magnitude of measurement walking beam proportional valve;
According to described walking beam speed reference curve, stationarity and the time demand of holder steel process, the speed of calculated step beam, acceleration magnitude and stepping period time;
The relation of test speed and proportional valve openings of sizes, according to whole positions and the speed parameter of described walking beam speed reference curve setting walking beam curve.
Behind whole positions and speed parameter of described setting walking beam curve, also comprise: described walking beam curve is finely tuned.
Described described walking beam curve is finely tuned after, also comprise:
Whether the peak acceleration that detects the walking beam in described walking beam curve surpasses 0.5m/s
2if whether the peak acceleration of the walking beam in described walking beam curve surpasses 0.5m/s
2, the speed minimum value of velocity variations process and the difference of maximum value are adjusted.
Described described walking beam curve is finely tuned after, also comprise: test the moving process of described walking beam curve, detect the movement position arrests whether described moving process accurately arrives appointment, and whether detect stepping period suitable.
Process furnace walking beam velocity curve fast adjustment method of the present invention can be realized rapid adjustment and the setting of walking beam curve, and account form is simple, and does not rely on technician's rich experiences, possesses good adaptability and convenience.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schema of the embodiment that Fig. 1 is process furnace walking beam velocity curve fast adjustment method of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
The schema of the embodiment that Fig. 1 is process furnace walking beam velocity curve fast adjustment method of the present invention, as shown in Figure 1, the process furnace walking beam velocity curve fast adjustment method of the present embodiment can comprise the following steps.
Particularly, at first, because proportional valve is the main control valve of walking beam, it is directly controlling the motion of walking beam.Therefore, for the obtaining of walking beam curve, the calculating of all parameters, need to have a set of existing through calculating or the speed reference of the walking beam preferably curve of life-time service as a reference.Use walking beam speed reference curve, can significantly reduce the workload of calculating and testing on the one hand, two can also effectively prevent the appearance of wrong parameter on the one hand.
According to the speed feedback calculated step beam proportional valve openings of sizes of walking beam displacement sensor and the relation of speed, and the dead band velocity magnitude of measurement walking beam proportional valve.The required control signal voltage of most of walking beam proportional valve of the prior art at-10V between+10V, the openings of sizes of the walking beam proportional valve corresponding with control signal voltage is-100% to 100%, because characteristic and the dead band of different walking beam proportional valves are not identical.The dead band set on proportional amplifier plate and slope variation value are just not identical, and its output characteristic is not identical yet.The walking beam proportional valve that therefore, need to will newly change according to the speed feedback of walking beam displacement sensor or the parameter of proportional amplifier plate are by the new parameter of the corresponding calculating of linear relationship.
The walking beam speed reference curve of take is foundation, and because openings of sizes and the length velocity relation of hydraulicvalve are substantially linear, the length velocity relation that therefore just can well solve different valves recalculates the problem of coupling again.Specifically can roughly calculate by the existing walking beam theory of computation in this area the relation of walking beam proportional valve openings of sizes and speed.For example, can be according to the lifting displacement of walking beam Theoretical Calculation and the acceleration and deceleration requirement shown in table 1, and can require to calculate according to the walking beam Theoretical Calculation translational displacement shown in table 2 and acceleration and deceleration the acceleration and deceleration value of certain process furnace walking beam.
It should be noted that, the slope of proportional amplifier plate is set the needs that need to meet sequence of control, and the slope of proportional amplifier plate is set the velocity variations time that defines sequence of control.Wherein, the acceleration and deceleration velocity of variation of walking beam curve is mainly controlled by computer program, and the slope of proportional amplifier plate is set and need to be met the desired top speed velocity of variation of sequence of control.In addition generally speaking, the slope of proportional amplifier plate is only set and need be met 0.5m/s
2requirement get final product.
| Sequence number | Time (s) | Oil cylinder displacement (mm) | The proportional valve input value |
| 1 | 1.1 | 55.59 | 0～83％ |
| 2 | 3.0 | 289.09 | 83％ |
| 3 | 0.8 | 44.47 | 83％～38％ |
| 4 | 2.5 | 111.19 | 38％ |
| 5 | 0.8 | 44.47 | 38％～83％ |
| 6 | 3.0 | 289.09 | 83％ |
| 7 | 1.1 | 55.59 | 83％～0 |
| ∑ | 12.3 | 889.53 | - |
The lifting displacement of table 1 walking beam Theoretical Calculation and acceleration and deceleration requirement
| Sequence number | Time (s) | Oil cylinder displacement (mm) | The proportional valve input value |
| 1 | 1.0 | 40 | 0～57％ |
| 2 | 2.5 | 180 | 57％ |
| 3 | 0.8 | 15 | 57％～30％ |
| 4 | 0.6 | 10 | 30％ |
| 5 | 0.2 | 5 | 30％～0 |
| ∑ | 5.1 | 250 | - |
Table 2 walking beam Theoretical Calculation translational displacement and acceleration and deceleration requirement
Secondly, after the relation of the openings of sizes of the proportional valve of having determined walking beam and speed, need the concrete equipment of basis and production technique stationarity and the temporal real needs to holder steel process, the definition walking beam be can further calculate according to walking beam speed reference curve and corresponding technic index required concrete speed, the size of acceleration and stepping period time reached.Because these values are all linear mutually, therefore can calculate simply and easily.After the above-mentioned theory parameter is fixing, just can tentatively obtain operable walking beam curve, walking beam just can move the control needs that just can substantially meet production according to the position of walking beam Curves appointment and velocity curve like this.
After tentatively having determined walking beam curve roughly, further can test speed and the relation of proportional valve openings of sizes, set and improve all positions and the speed parameter of walking beam curve, to complete the setting up procedure of walking beam curve.
Relation according to speed and walking beam proportional valve openings of sizes, in the situation that foundation walking beam speed reference curve, (the velocity variations location parameter in walking beam speed reference curve can all remain unchanged, and only calculates corresponding length velocity relation can to carry out automatically calculating corresponding new parameter by computer program.Such as, in walking beam speed reference curve, the walking beam proportional valve will at least reach 13% and just have walking beam action, and present new walking beam proportional valve may need 18% signal just can move, and this is dead band.And for example, the speed of 30mm/s in the corresponding walking beam speed reference curve of 25% possibility, present new walking beam proportional valve may need out 40% just can reach this speed.Therefore, according to original walking beam speed reference curve, more just can calculate the parameter of corresponding new opening degree of the parameter of corresponding walking beam speed reference curve according to dead band, opening degree and the length velocity relation of new walking beam proportional valve.This is because speed is determined, is that different walking beam proportional valves or the corresponding dead band of proportional amplifier plate, opening and length velocity relation have become, and adjusts new parameter constant with maintenance speed.)。
The process furnace walking beam velocity curve fast adjustment method of the present embodiment can be realized rapid adjustment and the setting of walking beam curve, and account form is simple, and does not rely on technician's rich experiences, possesses good adaptability and convenience.
Preferably, behind whole positions and speed parameter of the setting walking beam curve of step 103, can further include: the walking beam curve is finely tuned.Owing to being preliminary curve by step 101 to the preliminary walking beam curve obtained of step 103, it can meet the general needs of production, if especially this line is the curve automatically generated according to the walking beam curve negotiating of having debugged, requirement is produced in this curve basic symbols symphysis.And, in order to improve the precision of control, can also further to the walking beam curve obtained by step 103, further finely tune.Also can debug a set of walking beam parameter according to practical situation, make it become a set of reference parameter.In production process so afterwards, in the time of need to be debugged the walking beam curve due to a variety of causes, as long as meeting the requirement of reference parameter, all positions and speed point just substantially can realize the motion control requirement of the walking beam of relevant device.In the process of walking beam operation, can also further record by the speed feedback value of sensor the speed of walking beam at each flex point place, acceleration and deceleration position, to carry out the verification of walking beam curve.
In addition, damage or break down and while needing to change, should first more finish changing valve platform or proportional amplifier plate when walking beam valve platform or proportional amplifier plate.Concrete steps can be the automatic steps that operator realize by the computer program of pressing corresponding testing button startup: at first, in the situation that human assistance, automatic control program by prior art is assisted testing valve platform dead band automatically, and dead band adjustment aim value is about the control signal that sends to proportional valve 15% to 19%.Automatic control program is given 16% control signal automatically, then can adjust knob until walking beam can rotate by the dead band of slowly rotating manually proportional amplifier plate.If walking beam can't rotate, can automatically strengthen control signal 1% to 2%, then repeat above-mentioned steps until walking beam can move.
Afterwards, automatically adjust the walking beam slope curve.In the ordinary course of things, the slope knob on proportional amplifier plate basically can be motionless.But in the slope test process, if the requirement on discontented full border, could trickle the tuned slope velocity of variation.And, according to the requirement of walking beam velocity curve, wherein, 60% variable quantity need to complete at least 2 seconds.By the program subtest, can judge that can current state meet this velocity of variation, if do not met, need by adjusting manually knob, then by program test, whether can reach required rate of change.This be because, the dead band of different proportional amplifier plates and slope adjusted value are different, the characteristic of output is also different.By artificial adjustment knob, computer program is measured automatically, until speed and slope variation curve fit.Generally speaking, the slope test meets lower than 0.5m/S
2acceleration can think and reach requirement.
Then, automatic control program Negotiation speed by prior art feeds back or utilizes time and range formula automatically to test the corresponding relation of proportional valve opening and speed, according to the principle of hydraulic pressure, the variation of proportional valve opening corresponding speed is substantially linearly proportional.Therefore, need to test two spot speed and the proportional valve opening relation that differs at least 40%.For example, but the speed of meter proportion valve opening 25% time, and at the proportional valve opening speed 65% time.According to the linear ratio relation, can calculate proportional valve corresponding walking beam speed when another openings of sizes.In addition, it should be noted that, due to the system protection setting, the control signal below dead band is inoperative.
Further preferably, after the walking beam curve is finely tuned, can further include: whether the peak acceleration that detects the walking beam in the walking beam curve surpasses 0.5m/s
2if whether the peak acceleration of the walking beam in the walking beam curve surpasses 0.5m/s
2, the speed minimum value of velocity variations process and the difference of maximum value are adjusted.Generally speaking, for guaranteeing production safety, prevent that steel billet, because inertia effect is subjected to displacement, causes industrial accident when the walking beam acceleration is excessive, the safety that impact is produced is carried out.Therefore, to the peak acceleration that detects the walking beam in the walking beam curve, need to be limited, the peak acceleration of the walking beam in general requirement walking beam curve is no more than 0.5m/s
2.Therefore, for further guaranteeing production safety, to the walking beam curve after fine setting, can carry out further verification, confirm that the peak acceleration of the walking beam in the walking beam curve is no more than 0.5m/s
2.If find that the peak acceleration of the walking beam in the walking beam curve exists over 0.5m/s
2situation occur, just need to be adjusted the speed minimum value of corresponding velocity variations process and the difference of maximum value, with the safety that ensures production, carry out.In addition, for fully ensuring safety, the original speed that walking beam starts, and the deceleration while stopping stops speed, preferably is no more than 15% point of dead band speed, if dead band speed is 15%, original speed is preferably lower than 30%.
After the relation curve that obtains proportional valve opening degree and corresponding speed variation, the openings of sizes degree of the corresponding needed proportional valve of speed that walking beam curve that will be good according to initial debugging by the automatic calculating of the automatic control program of prior art is walked required, then automatic control program is in the situation that keep the invariant position of velocity variations flex point automatically to adjust the signal that needed walking beam speed is exported to valve platform openings of sizes.
According to the step of foregoing description, can debug respectively the upcurve of lift valve of walking beam and the curve that advances of shiftable valve, and the parameter of curve and rising and direct corresponding the getting final product of the curve that advances that descend and retreat.
Further preferably, after the walking beam curve is finely tuned, can further include: whether the moving process of test walking beam curve, detect the movement position arrests whether moving process accurately arrives appointment, and it is suitable to detect stepping period.In order to guarantee that walking beam can reach in strict accordance with the requirement of walking beam curve the movement position arrests of appointment, the curvilinear motion process of specifically can further test respectively rising, advancing, descending and retreating, detect the movement position arrests whether each motion can accurately arrive appointment.If error has surpassed 1mm, automatic control program can automatically be adjusted and close valve position.If the DeGrain of adjusting, the speed in the time of can further adjusting the arrival object point and the variation range of position.For example, for the curve that advances, if increased the finally end speed 2% of the even deceleration of the section of advancing, the slope deceleration distance needs corresponding increase by 3%, and vice versa.So just can further improve the accuracy of walking beam curve, the security of corresponding raising equipment.It should be noted that the test of dead band and slope variation needs artificial the cooperation to carry out.This be because, the dead band of different proportional amplifier plates and slope adjusted value are different, the characteristic of its output also there are differences.When this two parameters of test, need the artificial knob of adjusting, by computer program, automatically measure, until speed and slope variation curve fit.
Afterwards, automatic control program carries out walking beam calculating cycle time.If cycle time is long or too short, can top speed be reduced by revising walking beam in the flex point residence time, or adjust the parameter adjustment such as Acceleration and deceleration time and revised.
In addition, at the walking beam displacement sensor, during without the function of velocity survey, the corresponding computing velocity of carrying out of time that can spend by recording move distance in program, equally also can complete above-mentioned measurement.
And identical for the debugging of the adjustment method of built-in proportional amplifier plate and above-mentioned external proportional amplifier plate, also can save the adjusting to dead band and slope.Wherein because can, higher than built-in proportional amplifier plate, therefore still be used external proportional amplifier plate more economical the work-ing life of external proportional amplifier plate.
The calculating that relies on automatic control program to carry out according to the method described above, can meet the running status that the running status of walking beam is good with the most initial debugging consistent substantially.If, after above-mentioned fast automatic debugging, walking beam still can't reach the ideal movements state, can on the basis of the parameter calculated, carry out trickle artificial adjustment, until meet production requirement.
Further, in the walking beam moving process, introducing speed feedback closed loop feedback is controlled and can be reached and measure more accurately and control walking beam, also can avoid when valve or physical construction break down the not controlled and accident of generation of the speed of walking beam simultaneously.
Process furnace walking beam velocity curve fast adjustment method of the present invention can be realized rapid adjustment and the setting of walking beam curve, and account form is simple, and do not rely on technician's rich experiences, possess good adaptability and convenience, can effectively guarantee normally carrying out of production on the one hand, can also effectively ensure the security of producing on the other hand, can effectively enhance productivity.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a process furnace walking beam velocity curve fast adjustment method, is characterized in that, comprises the following steps:
Obtain walking beam speed reference curve;
Feed back the relation of calculated step beam proportional valve openings of sizes and speed according to the speed of walking beam displacement sensor, and measure the dead band velocity magnitude of described walking beam proportional valve;
According to described walking beam speed reference curve, stationarity and the time demand of holder steel process, the speed of calculated step beam, acceleration magnitude and stepping period time;
The relation of test speed and proportional valve openings of sizes, and right, according to whole positions and the speed parameter of described walking beam speed reference curve setting walking beam curve.
2. process furnace walking beam velocity curve fast adjustment method according to claim 1, is characterized in that, behind whole positions and speed parameter of described setting walking beam curve, also comprises: described walking beam curve is finely tuned.
3. process furnace walking beam velocity curve fast adjustment method according to claim 2, is characterized in that, described described walking beam curve is finely tuned after, also comprise:
Whether the peak acceleration that detects the walking beam in described walking beam curve surpasses 0.5m/s
2if O.5m/s whether the peak acceleration of the walking beam in described walking beam curve surpass
2, the speed minimum value of velocity variations process and the difference of maximum value are adjusted.
4. process furnace walking beam velocity curve fast adjustment method according to claim 2, it is characterized in that, described described walking beam curve is finely tuned after, also comprise: the moving process of testing described walking beam curve, detect the movement position arrests whether described moving process accurately arrives appointment, and whether detect stepping period suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446836.XA CN103451410B (en) | 2013-09-27 | 2013-09-27 | A kind of process furnace walking beam velocity curve fast adjustment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446836.XA CN103451410B (en) | 2013-09-27 | 2013-09-27 | A kind of process furnace walking beam velocity curve fast adjustment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103451410A true CN103451410A (en) | 2013-12-18 |
| CN103451410B CN103451410B (en) | 2016-03-09 |
Family
ID=49734241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310446836.XA Active CN103451410B (en) | 2013-09-27 | 2013-09-27 | A kind of process furnace walking beam velocity curve fast adjustment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103451410B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1979364A (en) * | 2005-12-06 | 2007-06-13 | 邹高能 | Precision digital step controller |
| CN2924110Y (en) * | 2006-06-29 | 2007-07-18 | 宝山钢铁股份有限公司 | Heating-furnace lifting hydraulic system without vibration and squeal |
| CN201653131U (en) * | 2009-09-28 | 2010-11-24 | 中冶东方工程技术有限公司 | Hydraulic lifting system for walking beam of large-sized walking beam furnace |
-
2013
- 2013-09-27 CN CN201310446836.XA patent/CN103451410B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1979364A (en) * | 2005-12-06 | 2007-06-13 | 邹高能 | Precision digital step controller |
| CN2924110Y (en) * | 2006-06-29 | 2007-07-18 | 宝山钢铁股份有限公司 | Heating-furnace lifting hydraulic system without vibration and squeal |
| CN201653131U (en) * | 2009-09-28 | 2010-11-24 | 中冶东方工程技术有限公司 | Hydraulic lifting system for walking beam of large-sized walking beam furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103451410B (en) | 2016-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204842527U (en) | Metal work school shape device | |
| CN103143572B (en) | Altitude air-cooling coiling tracking and coiling control system | |
| CN104117554B (en) | A kind of high-accuracy straightening machine automatic control system and control method | |
| CN104132607B (en) | A kind of agricultural machinery chassis frame welding deformation detection platform | |
| CN103112139A (en) | Die-opening positioning control method and system | |
| JP2018202491A5 (en) | ||
| CN103451410A (en) | Method for adjusting velocity curve of heating furnace stepping beam quickly | |
| CN105618480B (en) | Roll the control system of aluminium foil thickness difference precision | |
| CN204486472U (en) | Aluminum recycling roll line automatic positioning equipment | |
| CN104368684A (en) | Automatic gap adjusting device used for draw bead die | |
| CN207343190U (en) | A kind of two point glue valve gear | |
| CN202527338U (en) | Glue thickness control system of coating head | |
| CN203527877U (en) | Novel acrylic bending machine | |
| CN207423064U (en) | A kind of measurer for measuring ramp thickness | |
| MX2019012093A (en) | Automatic polishing system. | |
| CN105373168B (en) | A kind of flat pad conversion device control method | |
| CN104324950B (en) | A kind of rolling system and its method | |
| CN104267740B (en) | Automatic leveling mechanism for parallel transmission structure | |
| CN208390919U (en) | A kind of high precision hydraulic press | |
| CN202719939U (en) | A height measuring platform | |
| CN202545429U (en) | Segmental pressure release control system for vulcanizing machine | |
| CN202742555U (en) | Crystal mechanical adhering machine | |
| CN104438349A (en) | Automatic positioning device of rolling line of aluminum rolling mill | |
| CN105350365A (en) | Steel wire rope diameter online control system and method | |
| CN205310503U (en) | Automatic tensioning equipment of sleeper prestressing tendons |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171107 Address after: 100096, 18, 5, 518, East Building Road, Xisanqi, Beijing, Haidian District Patentee after: Beijing Bestpower Worthysky Technology Co., Ltd. Address before: 100096, Beijing Haidian District Xisanqi building materials East Road, No. 18, can Bai building Patentee before: Beijing Bestpower Electrical Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100096 Beijing Haidian District Xisanqi building materials East Road 18, 5, 518 room. Patentee after: Polytron Technologies Inc in Beijing Address before: 100096 Beijing Haidian District Xisanqi building materials East Road 18, 5, 518 room. Patentee before: Beijing Bestpower Worthysky Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |