CN101812656A - Simulation experiment device and method for controlling thickness of hot-dip coating - Google Patents
Simulation experiment device and method for controlling thickness of hot-dip coating Download PDFInfo
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- CN101812656A CN101812656A CN 201010149277 CN201010149277A CN101812656A CN 101812656 A CN101812656 A CN 101812656A CN 201010149277 CN201010149277 CN 201010149277 CN 201010149277 A CN201010149277 A CN 201010149277A CN 101812656 A CN101812656 A CN 101812656A
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Abstract
The invention relates to a simulation experiment device and a simulation experiment method for controlling the thickness of a hot-dip coating, which are used for detecting spray-air pressure of the coating, wherein the device is also used for detecting the spray-air angle of the coating, a sample speed and a distance between the experiment device and a sample. The simulation experiment device comprises a driving device (5), nozzles (7) and a plurality of position sensors, wherein the driving device (5) is positioned in the middle of the device vertically and is used for driving a sample (8) to immerse into or leave plating solution (9); the nozzles (7) are arranged symmetrically on two sides of the driving device (5), and can rotate and move up and down and left and right; and the plurality of position sensors are used for respectively acquiring position signals of a rotary device (6) and the driving device (5) and a plurality of position signals on the left and right sides of the driving device (5), and are respectively connected with a master computer (15) through a signal acquisition unit (14). A plurality of groups of position sensors are adopted to track the operation of the device, the parameters such as the distance between the nozzles and the sample, and the rotation angle can be flexibly adjusted, the simulation study on the on-site coating control process is realized furthest, and the technological parameters for the optimal thickness control are found out.
Description
Technical field
The present invention relates to the plating of metallic substance, particularly relate to the simulation experiment device and the method for hot-dip coating gauge control.
Background technology
The thickness of coating CONTROL PROCESS is an important process procedure during the steel band continuous hot galvanizing is produced, and the precision of its control and stability have determined quality of coating and surface topography.The coating control device is one of most important equipment of galvanization production line, has determined product plating thickness, has influenced surface quality of products.When the steel band with certain speed was pulled out in the plating pot, the pump that near the plating bath the steel band is subjected to steel band rose effect, took plating pot surface with certain speed out of with steel band.Though, under action of gravity, understand some plating bath into zinc pot that refluxes.But the plating bath that is attached on steel strip surface still will be far more than the required quantity of coating, and the homogeneity of coating surface and planarization are relatively poor.Therefore, the thickness of coating control device is by regulating processing parameters such as jetting pressure, device and steel band distance, winding-up corner, the air curtain that control and guarantee blows out with certain speed rive be attached on the plating bath of steel strip surface after, steel band is produced effect of impact, peripheral some gas of air-flow is rebounded, and the gas blanket at air-flow center moves downward or upward along steel strip surface.Like this, a part of gas that flows downward along steel strip surface has just produced downward pressure for the plating bath of being rived, and itself and steel band are peeled off, thus the control thickness of coating.At present, nearly all galvanization production line all adopts this thickness of coating CONTROL PROCESS both at home and abroad.But the parameter that this thickness of coating CONTROL PROCESS relates to is various, parameters relationship complexity such as nozzle and steel band distance, nozzle angle of rotation, stream pressure, bath temperature, sort of plating solution, immersion plating time, air flow blowing time.
The correlative study personnel mainly adopt two kinds of methods for the technical study of galvanization production line gauge control both at home and abroad: 1) adopt the method for large-scale production line and pilot production line, directly carry out the on-line Control and the experimental study of thickness of coating.This method is costly, and the participant is numerous, and processing parameters such as jetting pressure, device and steel band distance, winding-up corner are adjusted complicated, can only carry out simple gauge control and adjustment work, and be not suitable for carrying out the technical study of coating control; 2) adopt lab setup to carry out the research method of processing simulation.Germany, Austria, Japan and other countries have been researched and developed the laboratory simulation device of thickness of coating control in succession.But, thickness of coating CONTROL PROCESS and controlled variable are complicated, the factor that influences thickness of coating has a lot, above-mentioned laboratory simulation device just carries out thickness of coating control by the mode of reconciling the gas jetting pressure, apparatus structure is simple, have many uncertain factors and data error, the modeling effort of key parameters such as the corner of can't jetting, steel band speed, device and sample distance is difficult to realize the effective modeling effort for on-the-spot technology.
Summary of the invention
The objective of the invention is to propose a kind of laboratory simulation equipment of hot-dip coating gauge control, can realize jetting in the hot-dip coating gauge control process modeling effort of key parameters such as corner, steel band speed, galvanizing rig and sample distance of this equipment.
In order to achieve the above object, the invention provides following technical scheme:
A kind of hot-dip coating gauge control simulation experiment device is used to detect the jetting pressure of coating, and wherein, this equipment also is used to detect the spacing of winding-up angle, sample speed and the experimental installation and the sample of coating, and it comprises:
Be positioned in the middle of this equipment and the vertical drive unit of placing 5, be used to drive sample 8 immersions and leave plating bath 9;
That drive unit 5 zygomorphy are arranged, rotatable and move up and down nozzle 7;
A plurality of position transducers are used for gathering respectively a plurality of position signals of swivel arrangement 6, drive unit 5 and drive unit 5 left and right sides, are connected with master control computer 15 by signal picker 14 respectively.
The swivel arrangement 6 and the nozzle driving 1 that link with nozzle 7 move on guide rail 4; The operation range is 65mm.
Described a plurality of position transducer comprises first to the 6th position transducer 13.1,13.2,13.3,13.4,13.5,13.6, wherein, the first, the 6th position transducer 13.1,13.6 lay respectively at two groups of nozzle drivings 1 that left-right symmetry distributes above, the second, the 5th position transducer 13.2,12.5 lays respectively at the outside of two groups of swivel arrangements 6 of left-right symmetry distribution, three, the 4th position transducer 13.3,13.4 is positioned on this equipment vertical centering control axis, and respectively above and below swivel arrangement 6.
Described plating bath 9 places in the heating unit 10.
Another object of the present invention is to propose a kind of analogue experiment method that uses the hot-dip coating gauge control of above-mentioned analog machine.
In order to achieve the above object, the invention provides following technical scheme:
A kind of analogue experiment method of simulation experiment device of hot-dip coating gauge control is used to detect the jetting pressure of coating, wherein, also is used to detect the spacing of winding-up angle, sample speed and the experimental installation and the sample of coating, and this method may further comprise the steps:
A) with sample 8 under the driving of drive unit 5, immerse in the plating bath 9 with the speed of 0.1-1.5m/s;
B) sample 8 immersion plating time in plating bath 9 is 0.5～10s;
C) in being the scope of 0.01MPa～1MPa, the blowing gas pressure of nozzle 7 adjusts and writes down this pressure;
D) pass through a plurality of position signals that a plurality of position transducers are gathered swivel arrangement 6, drive unit 5 and drive unit 5 left and right sides, input master control computer 15, thereby calibration sample 8 positions, and write down each processing parameter, concrete parameter comprises: the distance between two side nozzles 7 is 1mm-130mm, the winding-up angle of nozzle 7 is 0 °～60 °, and the upwards travelling speed that drive unit 5 drives sample 8 is 0.1m/s～1.5m/s;
E) after sample 8 immersion plating, according to the difference of thickness of coating controlled variable, thickness of coating is 6-50 μ m.
The winding-up angle of nozzle 7 is the angle of nozzle and drive unit 5.
This method satisfies one of following parameter at least:
Blowing gas pressure is 0.1MPa～0.4MPa, and the winding-up angle of nozzle 7 is 15 °～45 °, and the upwards travelling speed that drive unit 5 drives sample 8 is 0.2m/s～1.0m/s.
Described a plurality of position transducer comprises first to the 6th position transducer 13.1,13.2,13.3,13.4,13.5,13.6, wherein, the first, the 6th position transducer 13.1,13.6 is gathered the position signal on the top of two groups of nozzle drivings 1 that left-right symmetry distributes respectively, the second, the 5th position transducer 13.2,12.5 is gathered the position signal in the outside of two groups of swivel arrangements 6 that left-right symmetry distributes respectively, three, the 4th position transducer 13.3,13.4 is positioned on this equipment vertical centering control axis, and gathers the position signal above and below swivel arrangement 6 respectively.
Described steel band 8 is handled through reduced anneal before immersion plating.
The precision of the position signal of described collection is 0.5mm.
The kind of described plating bath 9 comprises: pure zinc, aluminium zinc, aluminium zinc silicon alloy, aluminum silicon alloy, zinc-aluminum-magnesium alloy.
The temperature of described plating bath 9 is 200 ℃～800 ℃.
Effective effect of the present invention is:
The present invention adopts the operation of many group position transducer tracking device, choose swivel arrangement and nozzle governing winding-up streamer mode control sample thickness of coating, the pattern of design driven device control nozzle distance, realized by regulating laboratory simulation equipment and the technology that core parameters such as nozzle and sample distance, angle of rotation, stream pressure carry out thickness of coating control, overcome the technical limitation of traditional method for simulation thickness of coating technical study.The present invention has following advantage: 1) can be according to the research needs, parameters such as flexible nozzle and sample distance, angle of rotation, stream pressure, bath temperature, sort of plating solution, immersion plating time, air flow blowing time realize the modeling effort for on-the-spot coating CONTROL PROCESS to greatest extent; 2) adopt the operation of many group position transducer tracking device, avoid the nozzle of sample both sides and its to cause the thickness of coating on sample two sides there are differences apart from difference, also avoid the difference of angle of rotation to cause the thickness of coating on sample two sides there are differences, guaranteed accuracy, practicality and the operability of laboratory thickness of coating CONTROL PROCESS; 3) can accurately simulate galvanization production line gauge control technology, intactly write down the experiment parameter of each process section, find out the processing parameter of optimum thickness control, instruct extensive zinc-plated production.
Brief description of drawings
Fig. 1 is the synoptic diagram of the laboratory simulation equipment of hot-dip coating gauge control.
Fig. 2 is the schematic top plan view of Fig. 1.
The heat zinc coating plate section photo that Fig. 3 is to use the laboratory simulation method of hot dipping degree thickness of coating control of the present invention to obtain, processing parameter: 15 ° of swivel arrangement corners, gaseous tension 0.2MPa, sample speed 0.2m/s.
The heat zinc coating plate section photo that Fig. 4 obtains for analogy method of the present invention, processing parameter: 30 ° of swivel arrangement corners, gaseous tension 0.2MPa, sample speed 1m/s.
The heat zinc coating plate section photo that Fig. 5 obtains for analogy method of the present invention, processing parameter: 30 ° of swivel arrangement corners, gaseous tension 0.3MPa, sample speed 0.2m/s.
Drawing reference numeral:
1. nozzle driving 2. cavitys 3. gas passages
4. guide rail 5. drive units 6. swivel arrangements
7. nozzle 8. samples 9. plating baths
10. heating unit 11. air compressor systems 12. air pressure regulators
13.1～13.6 first location transmitters～the 6th position transducer
Embodiment
The present invention is further described below in conjunction with accompanying drawing, and hot-dip coating thickness control device of the present invention as depicted in figs. 1 and 2.
Hot-dip coating thickness control device symmetric offset spread, middle two groups of swivel arrangements 6 and the nozzle 7 of being symmetrically distributed, air compressor system 11 is connected with nozzle 7 with swivel arrangement 6 by gas passage 3 with air pressure regulator 12, and nozzle driving 1 drives swivel arrangement 6 and nozzle 7 moves on guide rail 4.First location transmitter 13.1～the 6th position transducer 13.6 is used for the collection position signal, wherein, first location transmitter 13.1 be positioned at nozzle driving 1 left-hand component above; Second position transmitter 13.2 is positioned at the outside of swivel arrangement 6 left-hand components; The 3rd position transducer 13.3 is positioned at the position of center line of hot-dip coating thickness control device, and is positioned at the upside of swivel arrangement 6; The 4th position transducer 13.4 is positioned at the position of center line of hot-dip coating thickness control device, and is positioned at the downside of swivel arrangement 6; The 5th position transducer 13.5 is positioned at the outside of swivel arrangement 6 right-hand components; The 6th position transducer 13.6 be positioned at nozzle driving 1 right-hand component above.First location transmitter 13.1～the 6th position transducer 13.6 is connected with master control computer 15 by signal picker 14.Position transducer 13.1-13.6 is used for the collection position signal, is transferred to computer and is used for control and regulates sample position.
The processing parameter of hot-dip coating method for controlling thickness is corresponding on the main control parameters of hot-dip coating thickness control device and control mode and the galvanization production line, apparatus structure is simple, practical, the accuracy height, sample both sides thickness of coating control accuracy is in 0.5 mu m range, sample thickness of coating control homogeneity range is in 100mm * 100mm scope, the no any sound of process of the test cleaning, light, electric pollution simultaneously can be implemented under the laboratory condition laboratory simulation for galvanization production line gauge control technology and study.
A kind of control method of hot-dip coating thickness, may further comprise the steps: the sample 8 after a) handling through reduced anneal is under the driving of drive unit 5, with certain speed 0.1～1.5m/s, enter in the plating bath 9 that is placed in the heating unit 10, sort of plating solution comprises: pure zinc, aluminium zinc, aluminium zinc silicon alloy, aluminum silicon alloy, zinc-aluminum-magnesium alloy; B) bath temperature is 200 ℃～800 ℃, and sample 8 is immersion plating 0.5～10s in plating bath 9; C) require for the control of thickness of coating according to the immersion plating technology of galvanization production line or according to the research requirement of thickness of coating CONTROL PROCESS, adjust sample position by first location transmitter 13.1～the 6th position transducer 13.6, adjust between two side nozzles 7 apart from 1mm～130mm, adjust gaseous tension 0.01MPa～1MPa, 0 °～60 ° of nozzle 7 angle of rotation, drive unit 5 drives the travelling speed 0.1m/s～1.5m/s of sample 8; D) after the sample immersion plating, look the difference of thickness of coating controlled variable, thickness of coating 6～50 μ m.Pressure and direction that the present invention regulates the winding-up air-flow by devices such as air compressor system 11, swivel arrangement 6 and nozzles 7, thereby control sample 8 thickness of coating, adopt the operation of many group position transducer 13.1～13.6 tracking device, accurately control the simulation accuracy of hot dipping degree thickness of coating CONTROL PROCESS, guarantee the consistence of angle of rotation, nozzle 7 and sample 8 distances of sample 8 both sides, thereby the thickness of coating CONTROL PROCESS of accurate simulation production line, device flexible operation, experimental result is accurate, thereby has reduced the production debugging cost.
Embodiment
Present embodiment carries out the simulated experiment of thickness of coating control for adopting laboratory simulation technology of the present invention and device.Experiment material is the auto sheet high-strength IF steel that domestic certain steel mill produces, and its chemical ingredients plate is as shown in table 1, and test steel plate thickness is 0.6mm, and the zincincation system sees Table 2.Sample 8 after handling through reduced anneal enters with the speed of 0.8m/s and to be placed in the heating unit 10 under the driving of drive unit, and plating bath 9 temperature are 470 ℃, and plating bath 9 kinds are zinc liquid, and sample 8 is immersion plating 2s in plating bath 9.Sample 8 is under the driving of drive unit 5, its top reaches nozzle 7 bottoms, regulating and driving swivel arrangement 6 angles is 0 °, 15 °, 30 °, 60 °, the adjustment gaseous tension is 0.1MPa, 0.2MPa, 0.3MPa, 0.4MPa, adjust sample 8 speed 0.2m/s, 0.4m/s, 0.6m/s, 1m/s, carry out the technical study of thickness of coating control.Carry out sample corrosion with 0.75% nitric acid alcohol, adopting the JSM-6480 of HIT type target voltage is that the scanning electronic microscope of 20Kv is carried out the coating interface scanning, and combines with chemical method and to carry out the measurement of thickness of coating, shown in Fig. 3-Fig. 5 and table 3.Because coating corrodes easily than matrix, follows certain corrosion step in the coating SEM picture.
Table 1 chemical ingredients unit: wt%
Table 2 zincincation system
By Fig. 3-5 and table 3 as can be known, parameters such as nozzle corner, gaseous tension, sample speed all have certain influence to thickness of coating.When the nozzle corner from 0 ° to 45 °, thickness of coating reduces.When gaseous tension is increased to 0.4MPa from 0.1MPa, thickness of coating reduces.0.2m/s is to 1m/s for sample speed, and thickness of coating reduces.Studies show that, the core parameter of thickness of coating control device such as control nozzle corner, gaseous tension, sample speed, after thereby the control blowing gas impinges upon steel strip surface zinc liquid with certain speed at a certain angle, the steel strip surface plating bath is produced effect of impact, the a part of gas that flows downward along steel strip surface has just produced downward pressure for the zinc liquid of being rived, itself and steel band are peeled off, thus the control thickness of coating.Above conclusion all matches with correlative study both at home and abroad.
Table 3 processing parameter is for the influence of thickness of coating control
Claims (13)
1. hot-dip coating gauge control simulation experiment device is used to detect the jetting pressure of coating, and it is characterized in that: this equipment also is used to detect the spacing of winding-up angle, sample speed and the experimental installation and the sample of coating, and it comprises:
Be positioned in the middle of this equipment and the vertical drive unit of placing (5), be used to drive sample (8) and immerse and leave plating bath (9);
That drive unit (5) zygomorphy is arranged, rotatable and move up and down nozzle (7);
A plurality of position transducers are used for gathering respectively a plurality of position signals of swivel arrangement (6), drive unit (5) and drive unit (5) left and right sides, are connected with master control computer (15) by signal picker (14) respectively.
2. equipment as claimed in claim 1 is characterized in that: air compressor system (11) is connected with nozzle (7) with swivel arrangement (6) by gas passage (3) with air pressure regulator (12).
3. equipment as claimed in claim 1 is characterized in that: go up operation with swivel arrangement (6) and nozzle driving (1) that nozzle (7) links at guide rail (4); The operation range is 65mm.
4. equipment as claimed in claim 1, it is characterized in that: described a plurality of position transducers comprise first to the 6th position transducer (13.1,13.2,13.3,13.4,13.5,13.6), wherein, first, the 6th position transducer (13.1,13.6) lay respectively at two groups of nozzle drivings (1) that left-right symmetry distributes above, second, the 5th position transducer (13.2,12.5) lay respectively at the outside of two groups of swivel arrangements (6) that left-right symmetry distributes, the 3rd, the 4th position transducer (13.3,13.4) be positioned on this equipment vertical centering control axis, and respectively above and below swivel arrangement (6).
5. equipment as claimed in claim 1 is characterized in that: described plating bath (9) places in the heating unit (10).
6. the analogue experiment method of an equipment as claimed in claim 1 is used to detect the jetting pressure of coating, and it is characterized in that: also be used to detect the spacing of winding-up angle, sample speed and the experimental installation and the sample of coating, this method may further comprise the steps:
A) with sample (8) under the driving of drive unit (5), immerse in the plating bath (9) with the speed of 0.1-1.5m/s;
B) sample (8) immersion plating time in plating bath (9) is 0.5～10s;
C) in being the scope of 0.01MPa～1MPa, the blowing gas pressure of nozzle (7) adjusts and writes down this pressure;
D) pass through a plurality of position signals that a plurality of position transducers are gathered swivel arrangement (6), drive unit (5) and drive unit (5) left and right sides, input master control computer (15), thereby calibration sample (8) position, and write down each processing parameter, concrete parameter comprises: the distance between two side nozzles (7) is 1mm-130mm, the winding-up angle of nozzle (7) is 0 °～60 °, and the upwards travelling speed that drive unit (5) drives sample (8) is 0.1m/s～1.5m/s;
E) after sample (8) immersion plating, according to the difference of thickness of coating controlled variable, thickness of coating is 6-50 μ m.
7. method as claimed in claim 6 is characterized in that: the winding-up angle of nozzle (7) is the angle of nozzle and drive unit (5).
8. method as claimed in claim 6 is characterized in that: this method satisfies one of following parameter at least:
Blowing gas pressure is 0.1MPa～0.4MPa, and the winding-up angle of nozzle (7) is 15 °～45 °, and the upwards travelling speed that drive unit (5) drives sample (8) is 0.2m/s～1.0m/s.
9. method as claimed in claim 6, it is characterized in that: described a plurality of position transducers comprise first to the 6th position transducer (13.1,13.2,13.3,13.4,13.5,13.6), wherein, first, the 6th position transducer (13.1,13.6) gather the position signal on the top of two groups of nozzle drivings (1) that left-right symmetry distributes respectively, second, the 5th position transducer (13.2,12.5) gather the position signal in the outside of two groups of swivel arrangements (6) that left-right symmetry distributes respectively, the 3rd, the 4th position transducer (13.3,13.4) be positioned on this equipment vertical centering control axis, and gather position signal respectively above and below swivel arrangement (6).
10. method as claimed in claim 6 is characterized in that: described steel band (8) is handled through reduced anneal before immersion plating.
11. method as claimed in claim 6 is characterized in that: the precision of the position signal of described collection is 0.5mm.
12. method as claimed in claim 6 is characterized in that: the kind of described plating bath (9) comprising: pure zinc, aluminium zinc, aluminium zinc silicon alloy, aluminum silicon alloy, zinc-aluminum-magnesium alloy.
13. method as claimed in claim 6 is characterized in that: the temperature of described plating bath (9) is 200 ℃～800 ℃.
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| CN103512722A (en) * | 2012-06-20 | 2014-01-15 | 鞍钢股份有限公司 | Simulation method and simulation device for controlling thickness of hot dip coating |
| CN106257634A (en) * | 2015-06-18 | 2016-12-28 | 株式会社荏原制作所 | The method of adjustment of plater and determinator |
| CN107527545A (en) * | 2016-06-20 | 2017-12-29 | 上海梅山钢铁股份有限公司 | Aluminum-zinc alloy water model experimental simulation device |
| CN108103429A (en) * | 2016-11-25 | 2018-06-01 | 上海梅山钢铁股份有限公司 | A kind of production method of hot-dip aluminizing zinc silicon steel plate |
| CN108779544A (en) * | 2016-03-31 | 2018-11-09 | 日新制钢株式会社 | The manufacturing method of hot-dip aluminizing steel wire |
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| CN103512722A (en) * | 2012-06-20 | 2014-01-15 | 鞍钢股份有限公司 | Simulation method and simulation device for controlling thickness of hot dip coating |
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| CN106257634B (en) * | 2015-06-18 | 2019-07-23 | 株式会社荏原制作所 | The method of adjustment and measurement device of plater |
| CN108779544A (en) * | 2016-03-31 | 2018-11-09 | 日新制钢株式会社 | The manufacturing method of hot-dip aluminizing steel wire |
| CN107527545A (en) * | 2016-06-20 | 2017-12-29 | 上海梅山钢铁股份有限公司 | Aluminum-zinc alloy water model experimental simulation device |
| CN108103429A (en) * | 2016-11-25 | 2018-06-01 | 上海梅山钢铁股份有限公司 | A kind of production method of hot-dip aluminizing zinc silicon steel plate |
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| CN101812656B (en) | 2012-02-15 |
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