CN107764699A - It is a kind of to probe into coating and the device and method of molten steel interface combination property in strip casting process - Google Patents
It is a kind of to probe into coating and the device and method of molten steel interface combination property in strip casting process Download PDFInfo
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- CN107764699A CN107764699A CN201710978021.4A CN201710978021A CN107764699A CN 107764699 A CN107764699 A CN 107764699A CN 201710978021 A CN201710978021 A CN 201710978021A CN 107764699 A CN107764699 A CN 107764699A
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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
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/2206—Combination of two or more measurements, at least one measurement being that of secondary emission, e.g. combination of secondary electron [SE] measurement and back-scattered electron [BSE] measurement
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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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- 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
- G01N2013/0225—Investigating surface tension of liquids of liquid metals or solder
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Abstract
Coating and the device and method of molten steel interface combination property in strip casting process are probed into the invention discloses a kind of, including heating system, image acquisition system and atmosphere control system, heating system includes heating furnace and the temperature conditioning unit for controlling heating furnace heating-up temperature, substrate is provided with the burner hearth of heating furnace, plating synusia is placed with substrate, steel sample is placed with plating synusia, image acquisition system includes video camera, observation window is provided with the side wall of heating furnace, video camera is taken pictures by observation window to the plating synusia in burner hearth and steel sample；Atmosphere control system is used to be controlled the heating atmosphere in whole burner hearth.The present invention can probe into the influence of coating, atmosphere, partial pressure of oxygen to interface conditions, can find out classic coating material and be used in produce reality, have directive function to produce reality.
Description
Technical field
The invention belongs to Ferrous Metallurgy performance detection technical field, more particularly to one kind to probe into coating in strip casting process
With the device and method of molten steel interface combination property.
Background technology
Thin strap continuous casting is the leading technology of steel industry now, and continuous casting is connected with rolling, simplify from molten steel to
The production process of hot rolling, make Steel Production Flow Chart more compact, more continuous, more efficient, more environmentally friendly.In strip casting process, steel
Interface heat transfer and interracial contact between liquid and crystallization roll is particularly significant to the process of setting of whole molten steel, and the coating on crystallization roll
Interface heat transfer between improvement molten steel and crystallization roll that can be well.Therefore, probe into coating and molten steel interface combination property naturally into
For study hotspot now, while also there is important directive significance to production.Therefore invention one kind probes into strip casting process
Middle coating and the installation method of molten steel interface combination property, molten steel can be studied under laboratory scale with plating interlayer
Wetability, whether reacted between nearly molten steel and coating material.
At present, it is relatively more to study the patent of liquid-solid boundary performance, but probes into coating and molten steel circle in strip casting process
The Patents of the installation method of face combination property almost search for less than.Publication No. CN101091958 patent, twin-roll thin strip
In continuous cast method, the mixed gas such as argon gas and hydrogen is introduced into molten steel in the technique of cast, and rationally control mixed gas
Ratio, to reduce partial pressure of oxygen, the low decrease in oxygen partial pressure degree of supercooling of molten steel, change molten steel solidification condition, add steel
Heat transfer of the water with crystallization roll between the time of contact of liquid, raising crystallization roll and solidified shell.This improves production efficiency, drop
Low production cost, while crystal grain thinning, improve surface and the internal soundness of Cast Strip.Above-mentioned patent research thin strap continuous casting neck
The process of domain double roller continuous casting.But this patent is carried out specially to the interface performance in strip casting process between coating and molten steel
Door and in-depth study, and probing into for this respect is highly important, also has highly important guidance to industrial actual production
Meaning.
The content of the invention
There is provided it is an object of the invention to overcome the deficiencies in the prior art one kind probe into strip casting process coating with
The device and method of molten steel interface combination property.Not only simple and easy and cost of the invention is cheap, can be in laboratory scale test
Interface conditions and other conditions influence to molten steel and plating interface situation of the molten steel on different coating is studied carefully, to actual production
There is important directive significance.
The present invention adopts the following technical scheme that realization：
A kind of device for probing into coating and molten steel interface combination property in strip casting process, including：
Heating system, including heating furnace and the temperature conditioning unit for controlling heating furnace heating-up temperature；
Substrate, it is arranged in the burner hearth of heating furnace；
Synusia is plated, is positioned in the substrate in burner hearth；
Steel sample, it is arranged in burner hearth and on plating synusia；
Image acquisition system, including video camera, are provided with observation window in the side wall of heating furnace, and the video camera passes through observation
Window is taken pictures to the plating synusia in burner hearth and steel sample；
Atmosphere control system, for controlling the heating atmosphere in burner hearth.
Further, the atmosphere control system includes atmosphere source and vavuum pump, and the atmosphere source passes through air inlet pipe and stove
Thorax is connected, and the vavuum pump is connected by exhaust tube with burner hearth, and import oxygen content is provided with air inlet pipe and is popped one's head in, on exhaust tube
Provided with outlet oxygen content probe.
Further, it is provided with device for deoxidizing between atmosphere source and import oxygen content probe in the air inlet pipe.
Further, the atmosphere source is mixed atmosphere source and adjusts each gas Burden in mixed atmosphere by control valve
Example.The ratio of gas collocation is controlled by control valve, mixed gas carries out deoxidation by device for deoxidizing and is passed through in body of heater.Whole
During individual, import oxygen content probe and outlet oxygen content probe are monitored in real time to partial pressure of oxygen.
Further, optical filter is provided between the video camera and observation window.What optical filter can give out to observation thing
Light is filtered to observe apparent image.
Further, the video camera is ccd video camera.
Substrate is alumina substrate.
The invention also discloses a kind of method for probing into coating and molten steel interface combination property in strip casting process, including
Following steps：
Step 1, dress sample,
Steel sample is placed on plating synusia, after being placed in alumina substrate in push-in heating furnace；
Step 2, control climate
Unlatching vacuum air pump pumps the air in stove, opens atmosphere source afterwards and adjusts its flow, by mixed gas
It is passed through among device for deoxidizing, the gas after deoxidation is passed through among heating furnace, oxygen of the oxygen contents of the inlet and outlet probe to gas
Pressure is monitored in real time；
Step 3, molten steel sample,
Heating furnace heating-up temperature is controlled by temperature conditioning unit, to be heated to after design temperature, steel sample melts
Spread over naturally afterwards on plating synusia；
Step 4, image collection,
Video camera is opened, Real Time Observation simultaneously collects the angle of wetting of molten steel and plating interface and contacts situation；
Step 5, subsequent analysis,
Image in video camera carries out the measurement of angle of wetting by Image-J softwares and LB-ADSA programs；At contact interface
Reaction tested and analyzed by SEM modes.
Further, the square that the length of side is 3mm is cut into firstly the need of by the steel line-transect of experiment in step 1, it is right afterwards
Steel sample surface carries out grinding process to ensure its surface without other impurities, and steel sample quality is 0.3-0.5g, preferably 0.3-0.4g.
Further, body of heater heating rate is 3-7 DEG C/min, preferably 5 DEG C/min, and rate of temperature fall is 1-5 DEG C/min, excellent
Elect 3 DEG C/min as.
Further, partial pressure of oxygen control is in 10-15-10-25Ppm, steel sample are 55cm-65cm apart from the distance of observation window.Stove
Heating effect in vivo everywhere is different, and the position at observation window 55cm-65cm is zone of constant temperature.Due to the oxygen being passed through in gas
Content is higher, therefore greatly reduces the surface tension of molten steel, therefore, it is difficult to form spherical crown shape, object gas be passed through body of heater it
Before, deoxidation is carried out to object gas using device for deoxidizing, by decrease in oxygen partial pressure to 10-15Below ppm, spherical crown shape can be observed
Produce.
Present invention offer is a kind of to probe into coating and the device and method of molten steel interface combination property in strip casting process.
After controlling furnace atmosphere, by programmed silicon molybdenum heating rod, the steel sample in heating furnace is heated.Reaching
After fusion temperature, steel sample is spread on coating naturally.The situation of steel sample and plating interlayer is recorded using ccd video camera,
And analyzed with Image-J softwares.Interface conditions after experiment, follow-up observation and analysis can be carried out with SEM.
The present invention is controlled 10 by the accurate control to partial pressure of oxygen in stove-15Below ppm so that steel sample melts
It is in afterwards spherical crown shape, so as to test its wetability and degree of supercooling.By the distance of steel sample and observation window be limited to 55cm-65cm it
Between, this region is constant temperature zone in stove, so as to ensure steel sample each several part temperature equalization, improves the accuracy of measurement.
The present invention mainly has the advantages that：
1) device, method is simple.The present invention includes three systems, and more than totally ten parts are formed, simple with test equipment,
And operating process is less, application method is simple.
2) it can be very good test interface performance.Equipment is recorded using ccd video camera to experimentation, passes through the later stage
Image-J softwares are analyzed interface wet ability.The response situation at interface can use ESEM to carry out observation analysis.
3) there is directive function to produce reality.The present invention can probe into coating, atmosphere, partial pressure of oxygen to interface feelings in laboratory
The influence of condition, classic coating material can be found out and be used in produce reality.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention probes into coating and the device of molten steel interface combination property in strip casting process
Figure；
Fig. 2 is 1-5 of embodiment of the present invention angle of wetting；
Wherein：1- vavuum pumps；2- gas cylinders；3- device for deoxidizing；4- air inlet pipe；5- exhaust tubes；6- imports oxygen content is popped one's head in；7-
Export oxygen content probe；8- silicon molybdenum heating rods；9- burner hearths；10- steel samples；11- plates synusia；12- alumina substrates；13-CCD is imaged
Machine；14- optical filters；15- observation windows.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
It is a kind of to probe into coating and the device of molten steel interface combination property in strip casting process, including heating system referring to Fig. 1
System, image acquisition system and atmosphere control system three parts.
Wherein, atmosphere control system takes air in equipment away using vavuum pump 1, and by controlling the gas equipped with different atmosphere
The flow of bottle 2 controls the ratio that gas is arranged in pairs or groups, and mixed gas by device for deoxidizing 3 deoxidation and be passed through in body of heater.Whole
During individual, the import oxygen content probe 6 and outlet oxygen content 7 pairs of oxygens of probe that are arranged in air inlet pipe 4 and exhaust tube 5 are pressed into
Row monitoring in real time.
Heating system controls one group of silicon molybdenum heating rod 8 to heat burner hearth 9 by temperature conditioning unit, so as to heating furnace 9
In steel sample 10, be allowed to be melted into liquid and spread on plating synusia 11.Specific implementation apply in, plating synusia 11 be 5mm,
5mm, 1mm board, positioned at the center of alumina substrate 12.In experimentation, the heating rate of body of heater for 5 DEG C/
Min, 30min is incubated, rate of temperature fall is 3 DEG C/min.
Image acquisition system has used ccd video camera 13 to be collected to image and post-processing.Optical filter 14 can be to seeing
The light that thing gives out is examined to be filtered to observe apparent image.Ccd video camera 13 is right by the observation window 15 on body of heater
The fusion process of steel sample 10 and the boundary moisture situation with plating synusia 11 are observed.
It is a kind of to probe into coating and the method for molten steel interface combination property in strip casting process, comprise the following steps：
The square that the length of side is 3mm is cut into firstly the need of by the steel line-transect of experiment, quality is between 0.3-0.4g, afterwards
Grinding process is carried out to steel sample surface to ensure its surface without other impurities, push-in adds after being finally placed in alumina substrate
In hot stove；Steel sample is 55cm-65cm apart from the distance of observation window.
Unlatching vacuum air pump pumps the air in stove, opens the gas cylinder equipped with source of the gas afterwards and adjusts its flow, will
Mixed gas is passed through among device for deoxidizing, and the gas after deoxidation is passed through among heating furnace.The oxygen content of inlet and outlet is popped one's head in gas
The partial pressure of oxygen of body is monitored in real time；
Heating furnace main body is heated by silicon molybdenum heating rod, the heating power of Si-Mo rod is entered by switch board setting program
Row control, it is to be heated to be plated to after design temperature, steel sample is spread over naturally after melting on synusia.
Ccd video camera is opened, Real Time Observation simultaneously collects the angle of wetting of molten steel and plating interface and contacts situation；
Image in ccd video camera can carry out the measurement of angle of wetting with after by Image-J softwares and LB-ADSA programs
Continuous analysis.Reaction at contact interface can be tested and analyzed by SEM modes；
Illustrated below according to specific EXPERIMENTAL EXAMPLE.
The quality of steel sample is used in embodiment as 0.35g, heating rate 5 DEG C/min, soaking time 30min, rate of temperature fall 3
℃/min。
Embodiment 1
Coating probes into coating and molten steel in strip casting process with molten steel interface comprehensive characteristic test using as shown in Figure 1
The device of interface combination property is tested, and specifically includes following sequential steps：
(1) sample is filled：0.35g steel samples are placed on plating synusia, after being placed in alumina substrate in push-in heating furnace.
(2) control climate：Unlatching vacuum air pump pumps the air in stove, opens Ar gas cylinders and H2 gas cylinders, flow afterwards
Mixed gas is passed through among device for deoxidizing by respectively 1.95ml/min and 0.05ml/min, and the gas after deoxidation is passed through into heating
Among stove.The oxygen content probe of inlet and outlet is monitored in real time to the partial pressure of oxygen of gas.
(3) molten steel sample：Heating furnace main body is heated by silicon molybdenum heating rod, the heating power of Si-Mo rod is by controlling
Cabinet setting program is controlled, and after to be heated to 1550 DEG C, steel sample is spread on Ni plating synusia naturally after melting.
(4) image collection：Ccd video camera is opened, Real Time Observation is simultaneously collected the angle of wetting of molten steel and plating interface and contacted
Situation.
(5) subsequent analysis：Image in ccd video camera can be soaked by Image-J softwares and LB-ADSA programs
The measurement and follow-up analysis at angle.
By changing coating material, keep other conditions constant, it is interface characteristics with molten steel to coating to study different coating materials
The influence of energy, such as embodiment 2,3.
Embodiment 2
Coating probes into coating and molten steel in strip casting process with molten steel interface comprehensive characteristic test using as shown in Figure 1
The device of interface combination property is tested, and specifically includes following sequential steps：
(1) sample is filled：0.35g steel samples are placed on plating synusia, after being placed in alumina substrate in push-in heating furnace.
(2) control climate：Unlatching vacuum air pump pumps the air in stove, opens Ar gas cylinders and H2 gas cylinders, flow afterwards
Mixed gas is passed through among device for deoxidizing by respectively 1.95ml/min and 0.05ml/min, and the gas after deoxidation is passed through into heating
Among stove.The oxygen content probe of inlet and outlet is monitored in real time to the partial pressure of oxygen of gas.
(3) molten steel sample：Heating furnace main body is heated by silicon molybdenum heating rod, the heating power of Si-Mo rod is by controlling
Cabinet setting program is controlled, and after to be heated to 1550 DEG C, steel sample is spread on Cr plating synusia naturally after melting.
(4) image collection：Ccd video camera is opened, Real Time Observation is simultaneously collected the angle of wetting of molten steel and plating interface and contacted
Situation.
(5) subsequent analysis：Image in ccd video camera can be soaked by Image-J softwares and LB-ADSA programs
The measurement and follow-up analysis at angle.
Embodiment 3
Coating probes into coating and molten steel in strip casting process with molten steel interface comprehensive characteristic test using as shown in Figure 1
The device of interface combination property is tested, and specifically includes following sequential steps：
(1) sample is filled：0.35g steel samples are placed on plating synusia, after being placed in alumina substrate in push-in heating furnace.
(2) control climate：Unlatching vacuum air pump pumps the air in stove, opens Ar gas cylinders and H2 gas cylinders, flow afterwards
Mixed gas is passed through among device for deoxidizing by respectively 1.95ml/min and 0.05ml/min, and the gas after deoxidation is passed through into heating
Among stove.The oxygen content probe of inlet and outlet is monitored in real time to the partial pressure of oxygen of gas.
(3) molten steel sample：Heating furnace main body is heated by silicon molybdenum heating rod, the heating power of Si-Mo rod is by controlling
Cabinet setting program is controlled, and after to be heated to 1550 DEG C, steel sample is spread on TiN plating synusia naturally after melting.
(4) image collection：Ccd video camera is opened, Real Time Observation is simultaneously collected the angle of wetting of molten steel and plating interface and contacted
Situation.
(5) subsequent analysis：Image in ccd video camera can be soaked by Image-J softwares and LB-ADSA programs
The measurement and follow-up analysis at angle.
By changing atmosphere, keep other conditions constant compared with Example 1, test different atmosphere condition is to coating and steel
The influence of sample interface performance, such as embodiment 4,5.
Embodiment 4
Coating probes into coating and molten steel in strip casting process with molten steel interface comprehensive characteristic test using as shown in Figure 1
The device of interface combination property is tested, and specifically includes following sequential steps：
(1) sample is filled：0.35g steel samples are placed on plating synusia, after being placed in alumina substrate in push-in heating furnace.
(2) control climate：Unlatching vacuum air pump pumps the air in stove, opens Ar gas cylinders and H2 gas cylinders, flow afterwards
Mixed gas is passed through among device for deoxidizing by respectively 1.90ml/min and 0.10ml/min, and the gas after deoxidation is passed through into heating
Among stove.The oxygen content probe of inlet and outlet is monitored in real time to the partial pressure of oxygen of gas.
(3) molten steel sample：Heating furnace main body is heated by silicon molybdenum heating rod, the heating power of Si-Mo rod is by controlling
Cabinet setting program is controlled, and after to be heated to 1550 DEG C, steel sample is spread on Ni plating synusia naturally after melting.
(4) image collection：Ccd video camera is opened, Real Time Observation is simultaneously collected the angle of wetting of molten steel and plating interface and contacted
Situation.
(5) subsequent analysis：Image in ccd video camera can be soaked by Image-J softwares and LB-ADSA programs
The measurement and follow-up analysis at angle.
Embodiment 5
Coating probes into coating and molten steel in strip casting process with molten steel interface comprehensive characteristic test using as shown in Figure 1
The device of interface combination property is tested, and specifically includes following sequential steps：
(1) sample is filled：0.35g steel samples are placed on plating synusia, after being placed in alumina substrate in push-in heating furnace.
(2) control climate：Unlatching vacuum air pump pumps the air in stove, opens Ar gas cylinders and H2 gas cylinders, flow afterwards
Mixed gas is passed through among device for deoxidizing by respectively 1.85ml/min and 0.15ml/min, and the gas after deoxidation is passed through into heating
Among stove.The oxygen content probe of inlet and outlet is monitored in real time to the partial pressure of oxygen of gas.
(3) molten steel sample：Heating furnace main body is heated by silicon molybdenum heating rod, the heating power of Si-Mo rod is by controlling
Cabinet setting program is controlled, and after to be heated to 1550 DEG C, steel sample is spread on Ni plating synusia naturally after melting.
(4) image collection：Ccd video camera is opened, Real Time Observation is simultaneously collected the angle of wetting of molten steel and plating interface and contacted
Situation.
(5) subsequent analysis：Image in ccd video camera can be soaked by Image-J softwares and LB-ADSA programs
The measurement and follow-up analysis at angle.
Experiment parameter in embodiment 1-5 is summarized in table 1, and the angle of wetting that Image-J is obtained is shown in Fig. 2
The embodiment 1-5 conditional parameter lists of table 1
| Embodiment | Protective atmosphere | Coating material |
| 1 | Ar97.5%, H22.5% | Ni |
| 2 | Ar97.5%, H22.5% | Cr |
| 3 | Ar97.5%, H22.5% | TiN |
| 4 | Ar95%, H25% | Ni |
| 5 | Ar92.5%, H27.5% | Ni |
It is can be seen that from result under different condition, the interface conditions between coating and molten steel are different.The angle of wetting of TiN and molten steel is most
It is small, it was demonstrated that contact of the molten steel on TiN coating is best, and interfacial tension is minimum.Ni coating is then bad to be adsorbed mutually with molten steel, therefore
Molten steel is difficult to sprawl well on Ni coating.In addition, with the continuous rise of hydrogen ratio, angle of wetting is less and less, wetting
Property is more outstanding.
Embodiment above describes the general principle and principal character and advantages of the present invention of the present invention, the technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The concrete operating principle of invention, without departing from the spirit and scope of the present invention, the present invention also have various change and changed
Enter, these changes and improvements all fall within the protetion scope of the claimed invention, and the claimed scope of the invention is by appended right
Claim and its equivalent thereof.
Claims (10)
1. a kind of probe into coating and the device of molten steel interface combination property in strip casting process, it is characterised in that including：
Heating system, including heating furnace and the temperature conditioning unit for controlling heating furnace heating-up temperature；
Substrate, it is arranged in the burner hearth of heating furnace；
Synusia is plated, is positioned in the substrate in burner hearth；
Steel sample, it is arranged in burner hearth and on plating synusia；
Image acquisition system, including video camera, are provided with observation window in the side wall of heating furnace, and the video camera passes through observation window pair
Plating synusia and steel sample in burner hearth are taken pictures；
Atmosphere control system, for controlling the heating atmosphere in burner hearth.
2. according to claim 1 probe into coating and the device of molten steel interface combination property in strip casting process, it is special
Sign is：The atmosphere control system includes atmosphere source and vavuum pump, and the atmosphere source is connected by air inlet pipe with burner hearth, described
Vavuum pump is connected by exhaust tube with burner hearth, and import oxygen content is provided with air inlet pipe and is popped one's head in, and outlet oxygen is provided with exhaust tube
Content is popped one's head in.
3. according to claim 2 probe into coating and the device of molten steel interface combination property in strip casting process, it is special
Sign is：In the air inlet pipe device for deoxidizing is provided between atmosphere source and import oxygen content probe.
4. according to claim 2 probe into coating and the device of molten steel interface combination property in strip casting process, it is special
Sign is：The atmosphere source is mixed atmosphere source and adjusts each gas blend proportion in mixed atmosphere by control valve.
5. according to claim 1 probe into coating and the device of molten steel interface combination property in strip casting process, it is special
Sign is：Optical filter is provided between the video camera and observation window.
6. according to claim 1 probe into coating and the device of molten steel interface combination property in strip casting process, it is special
Sign is：The video camera is ccd video camera.
7. a kind of probe into coating and the method for molten steel interface combination property in strip casting process, it is characterised in that：Usage right
It is required that probe into coating and the device of molten steel interface combination property in strip casting process, including following step described in any one of 1-6
Suddenly：
Step 1, dress sample,
Steel sample is placed on plating synusia, after being placed in alumina substrate in push-in heating furnace；
Step 2, control climate
Unlatching vacuum air pump pumps the air in stove, opens atmosphere source afterwards and adjusts its flow, mixed gas is passed through
Among device for deoxidizing, the gas after deoxidation is passed through among heating furnace, the oxygen content probe of inlet and outlet is pressed into the oxygen of gas
Row monitoring in real time；
Step 3, molten steel sample,
Heating furnace heating-up temperature is controlled by temperature conditioning unit, it is to be heated to after design temperature, steel sample melt after from
So spread on plating synusia；
Step 4, image collection,
Video camera is opened, Real Time Observation simultaneously collects the angle of wetting of molten steel and plating interface and contacts situation；
Step 5, subsequent analysis,
Image in video camera carries out the measurement of angle of wetting by Image-J softwares and LB-ADSA programs；It is anti-at contact interface
It should be tested and analyzed by SEM modes.
8. according to claim 7 probe into coating and the method for molten steel interface combination property in strip casting process, it is special
Sign is：Partial pressure of oxygen is controlled 10-15-10-25Ppm, steel sample are 55cm-65cm apart from the distance of observation window.
9. according to claim 7 probe into coating and the method for molten steel interface combination property in strip casting process, it is special
Sign is：Body of heater heating rate is 3-7 DEG C/min, and rate of temperature fall is 1-5 DEG C/min.
10. according to claim 7 probe into coating and the method for molten steel interface combination property in strip casting process, it is special
Sign is：The square that the length of side is 3mm is cut into firstly the need of by the steel line-transect of experiment in step 1, steel sample surface is entered afterwards
For row grinding process to ensure its surface without other impurities, steel sample quality is 0.3-0.5g.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108986629A (en) * | 2018-08-30 | 2018-12-11 | 中南大学 | A kind of Twin-Roll Strip Casting device simulator and its method |
| CN109036073A (en) * | 2018-08-30 | 2018-12-18 | 中南大学 | A kind of devices and methods therefor that simulation thin belt continuous casting crystal roller surface oxidation film generates |
| CN110261459A (en) * | 2019-06-17 | 2019-09-20 | 北京科技大学 | A kind of device for controlling extremely low oxygen content in atmosphere and measuring its partial pressure of oxygen |
| CN110274850A (en) * | 2019-07-30 | 2019-09-24 | 西南交通大学 | A kind of contact angle test device and test method |
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| CN108986629A (en) * | 2018-08-30 | 2018-12-11 | 中南大学 | A kind of Twin-Roll Strip Casting device simulator and its method |
| CN109036073A (en) * | 2018-08-30 | 2018-12-18 | 中南大学 | A kind of devices and methods therefor that simulation thin belt continuous casting crystal roller surface oxidation film generates |
| CN109036073B (en) * | 2018-08-30 | 2020-12-29 | 中南大学 | Device and method for simulating generation of surface oxidation film of thin-strip continuous casting crystallization roller |
| CN110261459A (en) * | 2019-06-17 | 2019-09-20 | 北京科技大学 | A kind of device for controlling extremely low oxygen content in atmosphere and measuring its partial pressure of oxygen |
| CN110274850A (en) * | 2019-07-30 | 2019-09-24 | 西南交通大学 | A kind of contact angle test device and test method |
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