CN110470573A - A method of slag boundary moisture angle is accurately measured with straight type thermocouple - Google Patents
A method of slag boundary moisture angle is accurately measured with straight type thermocouple Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/02—Investigating surface tension of liquids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/02—Investigating surface tension of liquids
- G01N2013/0208—Investigating surface tension of liquids by measuring contact angle
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Abstract
The present invention discloses a kind of method for accurately measuring slag Yu different coating boundary moisture angle with straight type thermocouple, and the present invention is used for the boundary moisture characteristic of researching high-temperature slag.Most of metallurgical reaction is the reaction that multiphase carries out on phase interface, and the size and property of reaction speed and phase interface are closely related, and research calculates slag and the wettability at interface and is particularly important.How at high temperature method provided by the invention is tested based on laboratory high temperature melting, in conjunction with monofilament Thermocouples Technology, solve the problems, such as simple and convenient fast and accurately measurement slag and different coating boundary moisture angle.
Description
Technical field
The method that the present invention discloses a kind of accurate measurement slag and coating material interfacial wettability, belongs to the synthesis of metallurgical slag
Utilize technical field；It is related to a kind of method for characterizing metallurgical cinder wetting ability.
Background technique
Angle of wetting is measurement of the slag to the wettability of solid material.When angle of wetting is less than 90 °, slag is to solid
Wettability is good；When angle of wetting is greater than 90 °, slag is poor to the wettability of solid.In extreme circumstances, when angle of wetting is 0 °
When, solid is not readily separated by slag complete wetting, the two；And when angle of wetting is 180 °, solid is not soaked then by slag completely.
Obviously, the interfacial tension between slag and solid material is smaller, and angle of wetting is also smaller, and slag is better to the wetability of solid.It is on the contrary
.
The situation that melt is in contact with solid material is frequently encountered in metallurgy, such as metal bath, molten sulfonium, slag or fused salt with
Contact etc. between furnace lining or electrode material.By taking aluminium electroloysis as an example, electrolyte is to the wettability of carbon materials to electrolytic process sheet
The service life of body and electrolytic cell all has a significant impact.The wettability of electrolyte is very good, electrolyte can be accelerated to cell lining and
The infiltration and erosion of slot bottom cause the premature breakage of electrolytic cell；Wettability is too poor, and is easy to happen anode effect, leads to slot
Voltage steeply rises, power consumption increases.Again by taking continuous casting covering slag as an example, covering slag has the important function for absorbing field trash
Can, research shows that the angle of wetting of TiN field trash and certain molten steel is 109.8 ° under the conditions of 1550 DEG C, the angle of wetting with certain covering slag
Only 25.6 °, this shows that TiN and the covering slag have good wetability, is conducive to the covering slag and absorbs TiN folder from molten steel
Sundries；In addition, research shows that certain covering slag is to TiO2With the different solubility of TiN field trash, this shows identical covering slag to not
It is different with the wetability of field trash, and cause the absorbability to different field trashes different.So to molten mold flux from it is different
The characterization of boundary moisture performance is just particularly important.
Angle of wetting mainly rule of thumb formula or was established system and was calculated using Young-Dupre equation in the past, but
Slag is complex compound composed by one kind of multiple substances, and content is difficult to strictly measure, wettability also with each operating parameter
Related, carrying out calculated angle of wetting using equation is numerical value ideally, it is difficult to which this is molten under accurate description actual state
The angle of wetting of slag uses for reference the meaning of reference and little, confidence level is lower there are biggish error.Slag is needed in high temperature
Lower fusing, same angle of wetting need to measure at high temperature, equally bring operation difficulty to a certain extent.
There are some exploratory developments early period in this seminar on measurement covering slag slag interfacial wettability, and such as Lv Peisheng 2018
In " the High-Temperature Properties of Mold Flux Observedand Measured that JOM periodical is delivered
In Situ by Single/Double Hot-ThermocoupleTechnique " it discloses with the U-shaped heat of monofilament in a text
The result of galvanic couple technical research covering slag wetability.Its research method is taken about with naked platinum-rhodium wire thermocouple circular arc first
50mg powder covering slag；Then, thermocouple is risen to by 1500 DEG C of fusing covering slags with the heating rate of 15 DEG C/s, since melt cinder has
There is certain expansion, circular arc melt cinder understands some and is expanded to formation semi-oval liquid pearl at other positions of thermocouple；Finally,
Semi-oval liquid pearl is fitted using this seminar existing software, and obtains the angle of wetting between melt cinder and thermocouple, and
Characterize the interfacial wettability of covering slag.Then, University Of Chongqing Wang Zhe et al. also copies this seminar with U-shaped monofilament Thermocouples Technology
The method for studying covering slag wetability, the research being unfolded also based on the expansion of slag surface tension, and in TMS Nian Huizhong in 2019
Meeting paper " the A Novel Method of Surface Tension Test for Melt Slags Based on delivered
Hot Thermocouple Technique " in disclose its result of study.According to its description, research method is in air gas
Under atmosphere, electric thermo-couple temperature is risen to 1500 DEG C and keeps the temperature；The half elliptic liquid of sample melting formation on thermocouple
The pearl and axis for saving liquid pearl is parallel with inspection surface；Then, liquid pearl shape is fitted using Image J software and show that angle of wetting is big
It is small；Liquid pearl and heat are calculated finally, the interface factor parameter of angle of wetting each substance to related document is substituted into Young's equation
Interfacial tension size between galvanic couple.But with further going deep into for research, there are randomnesss for the discovery above method；And measurement
As a result effectively it cannot verify and calibrate.
The content of present invention
For the present invention on the basis of original discovery techniques, in order to solve the above method, there are randomnesss；And measurement
As a result the deficiencies of effectively cannot verifying and calibrate, proposes a kind of side for measuring slag and coating material interfacial wettability
Method.
A kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple of the present invention, the method are as follows: using straight
The portion A of straight type monofilament thermocouple is contacted with slag charge to be measured after the heating of straight type monofilament thermocouple and picks foot by type monofilament thermocouple
The granulated slag of amount, laterally disposed thermocouple；Then heat to granulated slag fusing；After heat preservation 3-5 minutes, due to the interfacial tension of slag
In the presence of slag can form elliptoid liquid pearl on straight type thermocouple, form the shape of liquid pearl using high definition DV shooting slag, protect
Deposit slag picture；The slag liquid pearl picture of interception is handled picture by software, makes melt in matched curve and picture
The ellipse of liquid pearl is tangent；Fitting is completed, and the angle of wetting that melt liquid pearl is formed is read from parameter dialog box；The straight type monofilament heat
The portion A of galvanic couple is any position in addition to end；
Definition: using straight type monofilament thermocouple as line of demarcation, same elliptoid liquid pearl is divided into upper end liquid pearl and lower end liquid
Pearl；In same slag picture, there are 4 angle of wettings, wherein have 2 profits on the contact surface of upper end liquid pearl and straight type monofilament thermocouple
Also there are 2 angle of wettings on the contact surface of wet angle, lower end liquid pearl and straight type monofilament thermocouple；Compare upper end liquid pearl, lower end liquid pearl with
Angle of wetting on the contact surface of straight type monofilament thermocouple, when the error of gained angle of wetting is greater than 5%；Then determine acquired results for nothing
Imitate result；When gained angle of wetting error be less than or equal to 10%, then determine acquired results be effective result.The calculating of the error
Mode are as follows: define the upper end liquid pearl, lower end liquid pearl and the profit on the contact surface of straight type monofilament thermocouple of same elliptoid liquid pearl
The maximum value at wet angle is B, the error=| angle of wetting-lower end liquid on the contact surface of upper end liquid pearl and straight type monofilament thermocouple
Angle of wetting on the contact surface of pearl and straight type monofilament thermocouple |/B*100%.
A kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple of the present invention, the straight type monofilament thermocouple
For the straight type platinum-rhodium wire thermocouple of straight type platinum-rhodium wire thermoelectricity occasionally coating；The coating be selected from ceramic coating, metal coating,
One of ceramet coating, the fusion temperature of the coating are greater than the fusion temperature of slag charge to be measured, and in measurement process,
It is non-fusible.
A kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple of the present invention, straight type monofilament thermocouple is added
Heat contacts in the portion A of straight type monofilament thermocouple with slag charge to be measured to 600-700 DEG C, and each contact point sticky of control, which takes, to be more than or equal to
5mg, it is preferably 5~10mg granulated slag, then heats to granulated slag fusing.
Preferably, on straight type monofilament thermocouple, at least provided with 2 contact points.
Scheme as a further preference, on straight type monofilament thermocouple, the quantity of slag that at least 2 contact point sticky take not phase
Deng.Taken slag specimen cannot be sprawled completely on each contact point, need to concentrate within the scope of the 0.5cm of straight type thermocouple length direction.
A kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple of the present invention, with the heating of 10-20 DEG C/s
Straight type monofilament thermocouple is heated to 600-700 DEG C by rate.
A kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple of the present invention, by straight type monofilament thermocouple
The portion A contacts with slag charge to be measured and picks enough granulated slags, and it is molten then to continue to be heated to granulated slag with the heating rate of 5-10 DEG C/s
Change.
A kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple of the present invention, the fusion process of entire slag with
The forming process at boundary moisture angle controls atmosphere；The atmosphere in air atmosphere, reducing atmosphere, protective atmosphere one
Kind, when using protective atmosphere, the flow for controlling protective gas is 200~300mL/min.The protective atmosphere is selected from nitrogen
At least one of gas, argon gas, the reducing atmosphere are selected from least one of carbon monoxide, hydrogen.
A kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple of the present invention, the slag liquid pearl of interception is drawn
Face is handled picture by software, the operation for keeping the ellipse of melt liquid pearl in matched curve and picture tangent are as follows: in software
Image-Type mode in select " 16-bit or 8-bit ", so that picture is adjusted to the accessible format under the software；It connects
, select Li under Adjust-Auto Threshold-Method mode, make in picture slag liquid pearl is white, background darkly
Color；Angle of wetting fit operation dialog box is recalled in Plugins-Drop-analysis-LB-ADSA function, adjusts the items of fitting
Parameter keeps matched curve and the ellipse of melt liquid pearl in picture tangent；The software is Image J software.
The present invention cleverly uses straight type thermocouple, solves the problems, such as that randomness exists in the prior art.Pass through simultaneously
Diffusion gained semiellipse drop is modified to directly to melt the oval drop of gained, and is formed automatically by the comparison of upper and lower side liquid pearl
Calibration and verifying, are effectively guaranteed the reliability of data, meanwhile, it, can be straight at one using technology designed by the present invention
Multiple contact points are arranged in type thermocouple, analyze and compare by the data of multiple contact points, further ensure the accurate of data
Property.The present invention selects 1 points of dry slag amount inconsistent (in a certain range) on multiple contact points, this is by dry slag amount
It considers into, for further obtaining accurately data provides necessary condition.In addition to this, the present invention is also an option that
Coating can simulate the true environment at industrial construction scene as research object, coating, this is mentioned to obtain more true data
Necessary condition is supplied.Meanwhile the present invention has due to using straight type thermocouple when studying atmosphere to slag boundary moisture angle
Clear superiority, when especially learning gas flow velocity influences it, the data obtained of the present invention is more objective.
Compared with the heuristic approach of early period, the present invention has done in following several respects and has improved and have the advantage that (1) is explored
Method mainly takes a large amount of slag (about 50mg) to melt, due to height in the liquid pearl vpg connection of formation by thermocouple circular arc
The dilatancy of warm melt, has liquid pearl and is expanded at straight type and form some liquid pearls, and suitable liquid pearl is then selected to carry out from picture
Processing；The present invention emphasizes to carry out taking slag using straight type thermocouple, and clear acquired quantity of slag range is 5~10mg, to ensure heat
Situations such as bending and the inadequate quantity of slag of galvanic couple, is respectively formed above and below thermocouple equiform to forming the influence of liquid pearl shape
Liquid pearl, to reappear two times result in one experiment, reduce the error of experiment comprehensively and improve the reliability of experiment.
(2) heuristic approach in terms of test atmosphere on, carried out mainly in air atmosphere；The present invention can select phase according to actual condition
It is carried out under the atmosphere answered.And the present invention is in influence of the learning gas flow velocity to experimental result, more objective (3) heuristic approach
In research slag from terms of the wetability at different interfaces, mainly pass through the interfacial wettability between research slag and platinum-rhodium wire,
Carry out the wetability of slag and different interfaces in analogy real process；The present invention newly devises one layer of coating material of plating on thermocouple
Material is melted slag without melt painting material, to form slag-air-coating material (liquid-gas-by heating thermocouple
Gu) three phase boundary, and then in real simulation actual condition slag and specific material interfacial wettability, rather than by slag with
The interfacial wettability of platinum-rhodium wire carrys out analogy.
Improvement of the present invention on heuristic approach, make method of the invention have good reliability and reproducibility and
Actual condition can be simulated realistically.
Detailed description of the invention
Attached drawing 1 is that embodiment 1 tests slag angle of wetting shape appearance figure；
Attached drawing 2 is that embodiment 2 tests slag angle of wetting shape appearance figure；
Attached drawing 3 is that embodiment 3 tests slag angle of wetting shape appearance figure；
Attached drawing 4 is that comparative example 1 tests slag angle of wetting shape appearance figure；
Attached drawing 5 is that comparative example 2 tests slag angle of wetting shape appearance figure.
Specific embodiment:
The invention will be further elaborated with reference to embodiments, and embodiment is merely to illustrate the present invention, without to appoint
What form limits the present invention.
In the embodiment of the present invention, taken slag specimen cannot be sprawled completely on each contact point, need to concentrate on straight type thermocouple
In the range of 0.5cm.
Embodiment 1
This example laboratory process is will first to test slag specimen (the grind into powder sieves of 100 mesh (cross), and in platinum-rhodium wire thermoelectricity
One layer of TiO is plated in idol2Coating；Then, platinum-rhodium wire temperature is risen to 700 DEG C with the heating rate of 10 DEG C/s, divided on 3 positions
Do not pick enough slag specimens (being followed successively by 5mg, 8mg, 10mg), after be passed through flow be 300mL/min argon gas carry out atmosphere protection；So
Afterwards, continue that the electric thermo-couple temperature for speckling with slag specimen is risen to 1500 DEG C of fusing slag specimens with the heating rate of 10 DEG C/s and keep the temperature 3 minutes.
Melt cinder shoots its shape after forming stable liquid pearl on thermocouple, is fitted with software and obtains melt cinder and TiO2Apply the profit of interlayer
Wet angle, wherein the result of 8mg sample point is as shown in Fig. 1.From the point of view of fitting result in figure, the angle of wetting that upper end liquid pearl is formed is
44.791 °, the angle of wetting that lower end liquid pearl is formed is 44.682 °, and error is only 0.24%.It is fitted 5mg sample point simultaneously, 10mg takes
The error of the data of sampling point, the angle of wetting that discovery the upper end liquid pearl is formed and the angle of wetting that 8mg sample point upper end liquid pearl is formed is small
In 3%；The wetting angle error that lower end liquid pearl is formed is less than 4%.
Embodiment 2
This example laboratory process is will first to test slag specimen grind into powder the sieves of 100 mesh (cross), and in platinum-rhodium wire thermoelectricity
One layer of TiN coating is plated in idol；Electric thermo-couple temperature is risen to 700 DEG C with the heating rate of 15 DEG C/s and picks enough slag specimens (8mg)；
Then, continue in direct air atmosphere with the heating rate of 8 DEG C/s by the electric thermo-couple temperature for speckling with slag specimen rise to 1450 DEG C it is molten
Slugging sample simultaneously keeps the temperature 4 minutes.Melt cinder shoots its shape after forming stable liquid pearl on thermocouple, is fitted with software and obtains liquid
The angle of wetting of slag and TiN coating, as a result as shown in Fig. 2.From the point of view of fitting result in figure, the angle of wetting that upper end liquid pearl is formed is
45.493 °, the angle of wetting that lower end liquid pearl is formed is 45.415 °, and error is only 0.17%.
Embodiment 3
This example laboratory process is will first to test slag specimen grind into powder the sieves of 100 mesh (cross), after with the liter of 20 DEG C/s
Naked platinum-rhodium wire electric thermo-couple temperature is risen to 600 DEG C and picks enough slag specimens (8mg) by warm rate, after be passed through flow be 200mL/min
Nitrogen carries out atmosphere protection；Then, the electric thermo-couple temperature for speckling with slag specimen is risen to 1400 DEG C with the heating rate of 5 DEG C/s and melted by continuation
Slugging sample simultaneously keeps the temperature 5 minutes.Melt cinder shoots its shape after forming stable liquid pearl on thermocouple, is fitted with software and obtains liquid
Angle of wetting between slag and platinum-rhodium wire, as a result as shown in Fig. 3.From the point of view of fitting result in figure, the wetting of upper end liquid pearl formation
Angle is 46.466 °, and the angle of wetting that lower end liquid pearl is formed is 46.258 °, and error is only 0.45%.
Comparative example 1
This comparative example experimentation is will first to test slag specimen grind into powder (sieve for crossing 100 mesh)；With the liter of 20 DEG C/s
Warm rate will be coated with TiO2The U-shaped platinum-rhodium wire electric thermo-couple temperature of coating rises to 700 DEG C and picks (the thermocouple presence of enough slag specimens
Certain camber), after be passed through flow be 300mL/min argon gas carry out atmosphere protection；Then, continue with the heating rate of 15 DEG C/s
The electric thermo-couple temperature for speckling with slag specimen is risen into 1500 DEG C of fusing slag specimens and keeps the temperature 3 minutes.Melt cinder forms stable on thermocouple
Its shape is shot after liquid pearl, is fitted with software and is obtained melt cinder and TiO2Angle of wetting between coating, as a result as shown in Fig. 4.
It is slightly bent downwardly it can be seen from the figure that thermocouple has, causes thermocouple upper and lower side liquid pearl shape inconsistent；From the knot of fitting
From the point of view of fruit, upper end liquid pearl angle of wetting is 47.079 °, and lower end angle of wetting is only 39.385 °, experimental error 16.34%.
Comparative example 2
This comparative example experimentation is will first to test slag specimen grind into powder the sieves of 100 mesh (cross), after with the liter of 5 DEG C/s
Naked platinum-rhodium wire electric thermo-couple temperature is risen to 500 DEG C and picks slag specimen by warm rate (since sintering temperature is inadequate, to be picked less than enough slags
Amount), after be passed through flow be 200mL/min nitrogen carry out atmosphere protection；Then, continue that slag will be speckled with the heating rate of 5 DEG C/s
The electric thermo-couple temperature of sample rises to 1450 DEG C of fusing slag specimens and keeps the temperature 5 minutes.Melt cinder is clapped after forming stable liquid pearl on thermocouple
Its shape is taken the photograph, be fitted with software and obtains the angle of wetting between melt cinder and platinum-rhodium wire, as a result as shown in Fig. 5.It can be with from figure
Find out, thermocouple upper end liquid pearl shape is plentiful, and lower end liquid pearl is flat, and there is exposed thermocouple in centre, illustrates materialsed amount
Not enough；From the point of view of the result of fitting, upper end liquid pearl angle of wetting is 50.813 °, and lower end angle of wetting is 32.326 °, and experimental error is
36.38%.
Claims (10)
1. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple, which is characterized in that the method are as follows: use
The portion A of straight type monofilament thermocouple is contacted with slag charge to be measured and is picked after the heating of straight type monofilament thermocouple by straight type monofilament thermocouple
Enough granulated slags, laterally disposed thermocouple；Then heat to granulated slag fusing；After heat preservation 3-5 minutes, due to the interfacial tension of slag
Presence, slag can form elliptoid liquid pearl on straight type thermocouple, the shape of liquid pearl is formed using high definition DV shooting slag,
Save slag picture；The slag liquid pearl picture of interception is handled picture by software, makes to melt in matched curve and picture
The ellipse of body fluid pearl is tangent；Fitting is completed, and the angle of wetting that melt liquid pearl is formed is read from parameter dialog box；The straight type monofilament
The portion A of thermocouple is any position in addition to end；
Definition: using straight type monofilament thermocouple as line of demarcation, same elliptoid liquid pearl is divided into upper end liquid pearl and lower end liquid pearl；In
There are 4 angle of wettings for same slag picture, wherein have 2 angle of wettings on the contact surface of upper end liquid pearl and straight type monofilament thermocouple,
Also there are 2 angle of wettings on the contact surface of lower end liquid pearl and straight type monofilament thermocouple；Compare upper end liquid pearl, lower end liquid pearl and straight type list
Angle of wetting on the contact surface of silk thermocouple, when the deviation of gained angle of wetting is greater than 5%；Then determine that acquired results are invalid knot
Fruit；When gained angle of wetting deviation be less than or equal to 5%, then determine acquired results be effective result.
2. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple according to claim 1, feature
Be: the straight type monofilament thermocouple is the straight type platinum-rhodium wire thermocouple of straight type platinum-rhodium wire thermoelectricity occasionally coating；The painting
Layer choosing is greater than slag charge to be measured from one of ceramic coating, metal coating, ceramet coating, the fusion temperature of the coating
Fusion temperature, and in measurement process, it is non-fusible.
3. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple according to claim 1, feature
It is: straight type monofilament thermocouple is heated to 600-700 DEG C, the portion A of straight type monofilament thermocouple is contacted with slag charge to be measured, controls
Each contact point sticky takes more than or equal to 5mg granulated slag, then heats to granulated slag fusing.
4. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple according to claim 1, feature
It is: on straight type monofilament thermocouple, at least provided with 2 contact points.
5. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple according to claim 4, feature
Be: on straight type monofilament thermocouple, the quantity of slag that at least 2 contact point sticky take is unequal.
6. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple according to claim 4, feature
Be: taken slag specimen cannot be sprawled completely on each contact point, need to concentrate in the range of straight type thermocouple 0.5cm.
7. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple according to claim 3, feature
It is: straight type monofilament thermocouple is heated to 600-700 DEG C with the heating rate of 10-20 DEG C/s.
8. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple according to claim 1, feature
It is: the portion A of straight type monofilament thermocouple is contacted with slag charge to be measured and picks enough granulated slags, then with the heating speed of 5-10 DEG C/s
Rate continues to be heated to granulated slag fusing.
9. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple according to claim 1, feature
It is: the fusion process of entire slag and the forming process control atmosphere at boundary moisture angle；The atmosphere is selected from air atmosphere, protection
One of atmosphere, when using protective atmosphere, the flow for controlling protective gas is 200~300mL/min.
10. a kind of method for accurately measuring slag boundary moisture angle with straight type thermocouple according to claim 1, feature
It is:
The slag liquid pearl picture of interception is handled picture by software, make matched curve in picture melt liquid pearl it is ellipse
The tangent operation of circle are as follows: select " 16-bit or 8-bit " in the Image-Type mode of software, picture is made to be adjusted to soft at this
Accessible format under part；Then, Li is selected under Adjust-Auto Threshold-Method mode, makes slag in picture
Liquid pearl is white, background is in black；Angle of wetting fit operation pair is recalled in Plugins-Drop-analysis-LB-ADSA function
Frame is talked about, the parameters of fitting are adjusted, keeps matched curve and the ellipse of melt liquid pearl in picture tangent；The software is Image
J image processing software.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988015A (en) * | 2019-12-30 | 2020-04-10 | 重庆大学 | Hot wire method-based dynamic and interface behavior test method for dissolving solid oxide in molten slag |
| CN117233043A (en) * | 2023-11-10 | 2023-12-15 | 北京科技大学 | Method for determining cooperative wetting behavior of iron-slag on surface of carbonaceous material and application of method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226935A (en) * | 2005-02-21 | 2006-08-31 | Nippon Steel Corp | Instrument and method for measuring contact angle of liquid drop |
| CN201047822Y (en) * | 2007-06-12 | 2008-04-16 | 中国铝业股份有限公司 | Measuring device for measuring molten salt wettability of aluminum liquid and kryocide |
| CN102393350A (en) * | 2011-09-28 | 2012-03-28 | 淮阴工学院 | Method for measuring wetting angle between titanium alloy melt and oxide ceramic |
| CN104407007A (en) * | 2014-12-16 | 2015-03-11 | 中南大学 | Method for determining melting temperature interval and melting behavior of metallurgical slag |
| CN106018184A (en) * | 2016-05-20 | 2016-10-12 | 大连理工大学 | Experimental device for measuring dynamic contact angle under high-temperature and high-pressure environments |
| CN108982300A (en) * | 2018-06-19 | 2018-12-11 | 重庆大学 | A kind of slag surface tension method for rapidly testing based on heat wire method |
| CN109655381A (en) * | 2019-01-04 | 2019-04-19 | 江苏理工学院 | A kind of measurement method of high temperature aluminum/aluminium alloy drop angle of wetting |
-
2019
- 2019-06-21 CN CN201910544168.1A patent/CN110470573B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226935A (en) * | 2005-02-21 | 2006-08-31 | Nippon Steel Corp | Instrument and method for measuring contact angle of liquid drop |
| CN201047822Y (en) * | 2007-06-12 | 2008-04-16 | 中国铝业股份有限公司 | Measuring device for measuring molten salt wettability of aluminum liquid and kryocide |
| CN102393350A (en) * | 2011-09-28 | 2012-03-28 | 淮阴工学院 | Method for measuring wetting angle between titanium alloy melt and oxide ceramic |
| CN104407007A (en) * | 2014-12-16 | 2015-03-11 | 中南大学 | Method for determining melting temperature interval and melting behavior of metallurgical slag |
| CN106018184A (en) * | 2016-05-20 | 2016-10-12 | 大连理工大学 | Experimental device for measuring dynamic contact angle under high-temperature and high-pressure environments |
| CN108982300A (en) * | 2018-06-19 | 2018-12-11 | 重庆大学 | A kind of slag surface tension method for rapidly testing based on heat wire method |
| CN109655381A (en) * | 2019-01-04 | 2019-04-19 | 江苏理工学院 | A kind of measurement method of high temperature aluminum/aluminium alloy drop angle of wetting |
Non-Patent Citations (2)
| Title |
|---|
| WANLIN WANG 等: "High-Temperature Properties of Mold Flux Observed and Measured In Situ by Single/Double Hot-Thermocouple Technique", 《ADVANCED REAL TIME OPTICAL IMAGING》 * |
| ZHE WANG 等: "Novel Method for Determining the Interfacial Properties of Melt Slags Based on Single Hot Thermocouple Technique", 《ISIJ INTERNATIONAL》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988015A (en) * | 2019-12-30 | 2020-04-10 | 重庆大学 | Hot wire method-based dynamic and interface behavior test method for dissolving solid oxide in molten slag |
| CN117233043A (en) * | 2023-11-10 | 2023-12-15 | 北京科技大学 | Method for determining cooperative wetting behavior of iron-slag on surface of carbonaceous material and application of method |
| CN117233043B (en) * | 2023-11-10 | 2024-02-02 | 北京科技大学 | Method for determining cooperative wetting behavior of iron-slag on surface of carbonaceous material and application of method |
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