CN206132681U - Casting mold powder sediment film resistance measuring device - Google Patents
Casting mold powder sediment film resistance measuring device Download PDFInfo
- Publication number
- CN206132681U CN206132681U CN201621177860.3U CN201621177860U CN206132681U CN 206132681 U CN206132681 U CN 206132681U CN 201621177860 U CN201621177860 U CN 201621177860U CN 206132681 U CN206132681 U CN 206132681U
- Authority
- CN
- China
- Prior art keywords
- crystallizer
- temperature
- continuous casting
- covering slag
- slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model provides a casting mold powder sediment film resistance measuring device belongs to the steel smelting continuous casting technology field, including laboratory bench, heating system, water cooling system, temperature measurement and collection system and data process system. The present invention has the advantages of rational structure, complete a sweep mold oscillation has been establish, the copper solidified shell difference in temperature, the sediment membrane flows into unique covering slag sediment film preparation system of variablees such as mode and dwell time, can be as required, with extremely low cost preparation different temperatures, the difference in temperature, high temperature coarse's covering slag sediment membrane, in order to be used for further sediment membrane structural analysis, lubricated and control heat transfer capacity studies, for improving continuous casting billet surface quality, reduce the accident rate in the continuous casting production, lay a solid foundation, for in depth announcement covering slag melting at the crystallizer, the action of solidifying, optimize covering slag control lubricating agent heat transfer capacity, provide scientific feasible technique by way of.
Description
Technical field
The utility model belongs to smelting iron and steel continuous casting technology field, and in particular to a kind of continuous casting covering slag slag film resistance measurement
Device.
Background technology
During the continuous casting of molten steel, the liquid covering slag above molten steel can be penetrated between strand/crystallizer, played
The effect of lubrication and Heat Transfer Control.Covering slag slag film thickness between crystallizer/strand is up to 2mm.Due to the temperature of different parts
Field is different, and its covering slag slag membrane stage is also different, and this is most important to conducting heat in control crystallizer.It is close in continuous casting billet near
Crystallizer part suitable for reading, near crystallizer side solid-state is usually, and is liquid near the part of green shell；Arrive in crystallizer and connect
The part of mouth under nearly crystallizer, the covering slag near strand side may be solid-state with the covering slag surveyed near crystallizer, cause
This different uncertain main causes are the molten of solidification shell surface temperature consecutive variations from top to bottom and covering slag
Change the difference of characteristic, and these features are the emphasis and difficult point of metallargist's heat transfer research in crystallizer.Covering slag is from knot
Brilliant device has had been generally acknowledged that three-decker to casting billet surface, near the glassy layer that crystallizer side is produced due to rapid solidification, near casting
Base surface for layer liquid and the crystallizing layer between them.Solid-state covering slag wherein near crystallizer is such as crystallizer
Vibration, it is also possible to which fracture is not with mold oscillation.
Molten steel solidifies along with heat transmission process from inside to outside in continuous cast mold, and the process is to continuous casting billet quality
Constitute particularly important impact.The heat of molten steel is by covering slag slag film, the crystallizer between solidified shell, crystallizer/green shell
Wall, in being finally delivered to crystallizer cooling water.Wherein, solidified shell, crystallizer wall, the hot-fluid feature of cooling water are easily research
Person grasps, but the thermal resistance of the covering slag slag film between crystallizer/green shell is unfixed and is difficult to measure.This is to research crystallization
The surface defect control of the solidification behavior of continuous casting green shell and continuous casting billet in device causes great difficulty.
There is larger difference in every physicochemical property of the covering slag of heterogeneity, this is also that the outer covering slag of Now Domestic grinds
The focus studied carefully and difficult point.Additionally, under different temperatures course can also there is larger change, such as high temperature, low temperature in the structure of covering slag
Elapsed-time standards, and mold oscillation form etc., this can all affect the slag membrane structure of covering slag so that affect continuous casting billet heat transfer and
Lubrication behavior, so as to cause serious impact to surface quality of continuously cast slab, continuous casting accident control.
Instantly due to without suitable covering slag slag membrane preparation method, it is difficult to really prepare satisfactory various conditions
The covering slag slag film of lower production, and then the slag membrane structure of covering slag, the slag film resistance of measurement covering slag are analyzed, this is to disclosing protection
Slag fusing, freezing mechanism constitute serious restriction with the measurement of transitivity feature.
Existing slag membrane preparation method relies primarily at live crystallizer slag circle suitable for reading or treats continuous casting and stops pouring extraction, simulation firing
Means such as section afterwards, the slag film that these methods are obtained is only capable of reflecting the state of covering slag in part, unilateral crystallizer, together
Vibration behavior in Shi Buneng simulation crystallizers, differs more with produce reality, and laboratory facilities are not reasonable.
Current slag film resistance measurement relies primarily on crystallizer protecting residue Thermal characteristic analysis instrument, mold simulator, mariages
Method.The point position of covering slag Thermal characteristic analysis instrument measurement is less, easily by external environmental interference；Mold simulator technologies introduce two
Dimension inverse problem calculation can preferably measure the thermal history of crystallizer copper intralamellar part, but to the green shell temperature of continuous casting billet side
Degree is difficult to measure, therefore the slag film resistance for calculating is unreasonable；The covering slag slag film of double-thread method measurement is relatively thin, in crystallizer
There is larger gap in actual covering slag heat transfer conditions.
Utility model content
In order to overcome the shortcomings of that above-mentioned prior art is present, the utility model provides a kind of continuous casting covering slag slag film resistance
Measurement apparatus and thermal resistance measurement method.
To achieve these goals, the utility model provides following technical scheme：
A kind of continuous casting covering slag slag film resistance measurement apparatus, including experimental bench, heating system, water-cooling system, temperature survey
And acquisition system and data handling system；
The experimental bench includes operating desk and bracing frame, and support frame as described above is located at operating desk top；
The heating system includes cylindric solidification shell, heating element heater and intensification automatic control system, the continuous casting
Base green shell is arranged on the operating desk, and the heating element heater is arranged on inside the solidification shell, the heating element heater with
The intensification automatic control system electrical connection；
The water-cooling system includes cylindric crystallizer, water circulating pump and cooling water channel；The crystallizer is arranged on described
In solidification shell, the cooling water channel pass through the crystallizer, the water circulating pump be arranged on the cooling water channel and with
The cooling water channel connection, the heating element heater is arranged in the crystallizer, and support frame as described above two ends are solid with the crystallizer
Fixed connection；
The temperature survey and acquisition system include N number of low temperature thermocouple, M pyrometer couple and temperature collect module,
The low temperature thermocouple each two is arranged at axially spaced intervals in the crystallizer for one group along the crystallizer, the high temperature thermoelectric
It is even to be arranged at axially spaced intervals in the solidification shell along the solidification shell, the low temperature thermocouple and the high temperature thermoelectric
Even position is oppositely arranged, and pyrometer couple described in top layer is with low temperature thermocouple described in the second layer from top to bottom relative to the operation
The high settings such as platform；Low temperature thermocouple is electrically connected with the temperature collect module described in the high temperature thermoelectric even summation, the temperature
Acquisition module and intensification automatic control system are electrically connected with the data handling system；
Wherein, the N is even number, and N >=4, the M=N/2-1.
Preferably, also including jacking system, the jacking system includes electric cylinder and electric cylinder control system；
The electric cylinder is fixedly connected with support frame as described above upper end, and the electric cylinder is electrically connected with the electric cylinder control system
Connect, the electric cylinder control system is electrically connected with the data handling system.
Preferably, the experimental bench also includes lighting device, and the lighting device is arranged on support frame as described above.
Preferably, the temperature collect module is temperature acquisition card.
Preferably, the heating element heater is screw type silicon carbide heating rod.
The continuous casting covering slag slag film resistance measurement apparatus that the utility model is provided have the advantages that：
(1) it is rational in infrastructure, establish include mold oscillation, crystallizer/green shell temperature difference, slag film flow into mode and stop when
Between wait variable unique covering slag slag film preparation system；
(2) can as needed, with the covering slag slag film that extremely low cost prepares different temperatures, the temperature difference, high temperature course, with
It is to improve surface quality of continuously cast slab, reduce continuous casting for further slag Analysis of Membrane Structures, lubrication and Heat Transfer Control capability study
Accident rate in production, lays a solid foundation；
(3) covering slag manufacturer is can be widely applied to, with the Melting And Solidification to trial-production and the covering slag of conventional production
State feature carries out observation, detection work.
(4) steel production enterprise is can be widely applied to, to entering factory's covering slag melting sources solidifiability supervision, Yi Jijie
Close continuous casting billet shell mass defect, produced on-site accident and carry out analysis work.
Description of the drawings
Fig. 1 is the structural representation of the continuous casting covering slag slag film resistance measurement apparatus of the utility model embodiment 1；
Fig. 2 is the continuous casting covering slag slag film resistance measurement apparatus fundamental diagram of the utility model embodiment 1.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is further described.Following examples are only used for
The technical solution of the utility model is clearly illustrated, and protection domain of the present utility model can not be limited with this.
Embodiment 1
The utility model provides a kind of continuous casting covering slag slag film resistance measurement apparatus, concrete as shown in figure 1, including experiment
Platform, heating system, water-cooling system, temperature survey and acquisition system and data handling system 11；
Experimental bench includes operating desk 1 and bracing frame 3, and bracing frame 3 is located at the top of operating desk 1；
Heating system includes cylindric solidification shell 4, heating element heater 5 and intensification automatic control system 14, continuous casting billet base
Shell 4 is arranged on operating desk 1, and heating element heater 5 is arranged on inside solidification shell 4, heating element heater 5 and intensification automatic control system
14 electrical connections, solidification shell 4 is simulation green shell in the present embodiment, and intensification automatic control system 14 is a set of existing automatic heating
Control system, power output is controlled including the voltage regulator controllers that can set heating curve and then heating element heater 5, this reality is controlled
Apply the screw type silicon carbide heating rod that heating element heater 5 in example is power 3kw.
Water-cooling system includes cylindric crystallizer 6, water circulating pump 2 and cooling water channel 7；Crystallizer 6 is arranged on continuous casting billet base
In shell 4, cooling water channel 7 passes through crystallizer 6, water circulating pump 2 to be arranged on cooling water channel 7 and connect with cooling water channel 7, heating unit
Part 5 is arranged in crystallizer 6, and the two ends of bracing frame 3 are fixedly connected with crystallizer 6.Solidification shell 4, crystallizer 6 in the present embodiment
Hollow cylinder structure is with heating element heater 5, wherein, the external diameter of crystallizer 6 is 200mm, and internal diameter is 104mm, is highly 100mm,
The external diameter of heating element heater 5 is 100mm, high for 180mm, and solidification shell 4 is located between crystallizer 6 and heating element heater 5, continuous casting billet
The space with 2-3mm is that, for the inflow of slag film, the present embodiment void is 2mm between green shell 4 and crystallizer 6.
Temperature survey and acquisition system include N number of low temperature thermocouple 8, M pyrometer couple 9 and temperature collect module 10,
In the present embodiment temperature collect module 10 be temperature acquisition card, specially 24 channel temperature capture cards.The each two of low temperature thermocouple 8
It is arranged at axially spaced intervals in crystallizer 6 along crystallizer 6 for one group, pyrometer couple 9 is arranged at axially spaced intervals in along solidification shell 4
In solidification shell 4, low temperature thermocouple 8 and the position of pyrometer couple 9 are oppositely arranged, top layer pyrometer couple 9 with from top to bottom
Second layer low temperature thermocouple 8 is relative to high settings such as operating desks 1；Pyrometer couple 9 and low temperature thermocouple 8 with temperature acquisition mould
Block 10 is electrically connected, and temperature collect module 10 and intensification automatic control system 14 are electrically connected with data handling system 11；
Wherein, N is even number, and N >=4, M=N/2-1.In the present embodiment, quantity M of pyrometer couple 9 is 3-9, low
Quantity N of warm galvanic couple 8 is 4-20.The quantity of the present embodiment high temperature thermocouple 9 is 5, and the quantity of low temperature thermocouple 8 is
12.Depending on the quantity of pyrometer couple 9 and low temperature thermocouple 8 can also be according to the size of concrete green shell, the present embodiment is counted to it
Amount is not particularly limited.
Further, in order to ensure the vertical tremor of crystallizer 6 in slag membrane process is prepared so that slag film sufficiently flows into crystallization
In space between device 6 and solidification shell 4, the present embodiment also includes also including jacking system that jacking system includes electric cylinder
13 and electric cylinder control system 15.Specifically, electric cylinder 13 is fixedly connected with the upper end of bracing frame 3, electric cylinder 13 and electric cylinder control
System processed 15 is electrically connected, and electric cylinder control system 15 is electrically connected with data handling system 11, and electric cylinder control system 15 controls electricity
The up-down vibration of dynamic cylinder 13 and entrance/disengaging working position.
Experimental bench also includes lighting device 12 in the present embodiment, and lighting device 12 is arranged on bracing frame 3, it is ensured that in light
Experimental implementation can be easily carried out in the case of line deficiency.
The present embodiment also provides covering slag slag membrane preparation method under a kind of different working conditions, comprises the following steps that described：
1) in crystallizer 6 pre-buried 6 groups amount to 12 low temperature thermocouples 8, pre-buried 5 high warms in solidification shell 4
Galvanic couple 9；
2) control of intensification automatic control system 14 heating rod is opened so that heating rod is according to the predetermined heating curve liter of system
Temperature to target temperature (typically at 1000-1400 DEG C), will solidification shell 4 be heated to predetermined temperature；
3) ON cycle water pump 2 and electric cylinder control system 15, make cold water circulate in cooling water channel 7, while electric cylinder
The control electric cylinder 13 of control system 15 is moved down and then drives crystallizer 6 to be moved to working position；
4) covering slag of slag film to be prepared is rendered to into the top of solidification shell 4, and into solidification shell 4 and crystallizer
Melted in space between 6；
5) electric cylinder control system 15 controls the up and down motion of electric cylinder 13 and then drives crystallizer 6 to move up and down, and heats up certainly
Autocontrol system 14 controls heating rod heating-up temperature and temperature retention time, reaches one section of stop motion and remains stationary after setting time
Time, so as to prepare the slag film of needs.
After heat time to be achieved, the control electric cylinder 13 of electric cylinder control system 15 is parked in crystallizer 6 to be parked behind position,
Remains stationary for a period of time, after low temperature thermocouple 8 and the temperature of pyrometer couple 9 tend towards stability each measurement point temperature, root is recorded
Slag film resistance is calculated according to measurement temperature, is specifically calculated as follows described.
The present embodiment also provides a kind of different working condition slag film resistance measuring methods, comprises the following steps that described：
1) temperature signal of low temperature thermocouple 8 and pyrometer couple 9 is gathered by temperature collect module 10, and by temperature
Electric signal is converted into temperature digital signal and is sent to data handling system 11；Wherein, two low temperature thermocouples 8 and same level
On a pyrometer couple 9 be a measurement group, the temperature digital signal of two low temperature thermocouples 8 is respectively k1And k2, high temperature
The temperature digital signal of thermocouple 9 is k0；
2) data handling system 11 calculates heat flow density q according to temperature digital signal by formula (1)；
Q=λCu×(k1-k2)×(x1-x2), (1)
In formula, λCuFor copper coin thermal conductivity factor；
3) data handling system 11 calculates crystallizer surface temperature k according to temperature digital signal by formula (2)f；
kf=(k1-k2)×x1/(x1-x2) (2)
In formula, x1And x2Respectively k1And k2Distance of the corresponding low temperature thermocouple of two measured values apart from crystallizer inwall；
4) data handling system 11 is according to heat flow density q and crystallizer surface temperature kf, slag film heat is calculated by formula (3)
Resistance R；
R=(k0-kf)/q； (3)
5) data handling system 11 calculates slag film thermal conductivity factor λ according to temperature digital signal by formula (4)slag,
λslag=q × Δ x/ (k0-kf), (4)
In formula, Δ x is the distance between crystallizer 6 and solidification shell 4, λslagIt is a weight for studying covering slag slag film
Data are wanted, the measuring method is profound fusing, the solidification behavior for disclosing covering slag in crystallizer, optimization covering slag control lubricates
Agent heat-transfer capability, there is provided the feasible technology of science by way of.
Embodiment described above is only the utility model preferably specific embodiment, and protection domain of the present utility model is not
It is limited to this, any those of ordinary skill in the art can become apparent in the technical scope that the utility model is disclosed
Technical scheme simple change or equivalence replacement, belong to protection domain of the present utility model.
Claims (5)
1. a kind of continuous casting covering slag slag film resistance measurement apparatus, it is characterised in that including experimental bench, heating system, water-cooling system,
Temperature survey and acquisition system and data handling system (11)；
The experimental bench includes operating desk (1) and bracing frame (3), and support frame as described above (3) is positioned at the operating desk (1) top；
The heating system includes cylindric solidification shell (4), heating element heater (5) and intensification automatic control system (14), institute
State solidification shell (4) to be arranged on the operating desk (1), the heating element heater (5) is arranged in the solidification shell (4)
Portion, the heating element heater (5) electrically connects with the intensification automatic control system (14)；
The water-cooling system includes cylindric crystallizer (6), water circulating pump (2) and cooling water channel (7)；The crystallizer (6) sets
Put in the solidification shell (4), the cooling water channel (7) is arranged through the crystallizer (6), the water circulating pump (2)
Connect on the cooling water channel (7) and with the cooling water channel (7), the heating element heater (5) is arranged on the crystallizer (6)
Interior, support frame as described above (3) two ends are fixedly connected with the crystallizer (6)；
The temperature survey and acquisition system include N number of low temperature thermocouple (8), M pyrometer couple (9) and temperature collect module
(10), low temperature thermocouple (8) each two is arranged at axially spaced intervals in the crystallizer (6) for one group along the crystallizer (6)
Interior, the pyrometer couple (9) is arranged at axially spaced intervals in the solidification shell (4) along the solidification shell (4), described
Low temperature thermocouple (8) and the pyrometer couple (9) position are oppositely arranged, pyrometer couple described in top layer (9) with from top to bottom
Low temperature thermocouple described in the second layer (8) is relative to high settings such as the operating desks (1)；The pyrometer couple (9) and described low
Warm galvanic couple (8) is electrically connected with the temperature collect module (10), and the temperature collect module (10) and intensification are automatically controlled
System (14) is electrically connected with the data handling system (11)；
Wherein, the N is even number, and N >=4, the M=N/2-1.
2. continuous casting covering slag slag film resistance measurement apparatus according to claim 1, it is characterised in that also including lifting system
System, the jacking system includes electric cylinder (13) and electric cylinder control system (15)；
The electric cylinder (13) is fixedly connected with support frame as described above (3) upper end, and the electric cylinder (13) controls with the electric cylinder
System (15) is electrically connected, and the electric cylinder control system (15) electrically connects with the data handling system (11).
3. continuous casting covering slag slag film resistance measurement apparatus according to claim 1, it is characterised in that the experimental bench is also wrapped
Lighting device (12) is included, the lighting device (12) is arranged on support frame as described above (3).
4. continuous casting covering slag slag film resistance measurement apparatus according to claim 1, it is characterised in that the temperature acquisition mould
Block (10) is temperature acquisition card.
5. continuous casting covering slag slag film resistance measurement apparatus according to claim 1, it is characterised in that the heating element heater
(5) it is screw type silicon carbide heating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621177860.3U CN206132681U (en) | 2016-11-03 | 2016-11-03 | Casting mold powder sediment film resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621177860.3U CN206132681U (en) | 2016-11-03 | 2016-11-03 | Casting mold powder sediment film resistance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206132681U true CN206132681U (en) | 2017-04-26 |
Family
ID=58577666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621177860.3U Expired - Fee Related CN206132681U (en) | 2016-11-03 | 2016-11-03 | Casting mold powder sediment film resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206132681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370695A (en) * | 2016-11-03 | 2017-02-01 | 华北理工大学 | Continuous casting mold flux film thermal resistance measuring device and method |
| CN111957917A (en) * | 2020-09-17 | 2020-11-20 | 贵州理工学院 | Device and method for obtaining continuous casting mold flux solidified slag film |
-
2016
- 2016-11-03 CN CN201621177860.3U patent/CN206132681U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370695A (en) * | 2016-11-03 | 2017-02-01 | 华北理工大学 | Continuous casting mold flux film thermal resistance measuring device and method |
| CN106370695B (en) * | 2016-11-03 | 2023-12-12 | 华北理工大学 | Device and method for measuring thermal resistance of continuous casting mold flux film |
| CN111957917A (en) * | 2020-09-17 | 2020-11-20 | 贵州理工学院 | Device and method for obtaining continuous casting mold flux solidified slag film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103969292B (en) | A kind of continuous crystallizer protecting slag complex heat transfer heat flux measurement device and method | |
| CN102759416B (en) | Continuous temperature measuring device and method during directional solidification | |
| Ko et al. | Simulation of low carbon steel solidification and mold flux crystallization in continuous casting using a multi-mold simulator | |
| CN106370695A (en) | Continuous casting mold flux film thermal resistance measuring device and method | |
| CN206132681U (en) | Casting mold powder sediment film resistance measuring device | |
| CN102661966B (en) | Method and device for measuring linear shrinkage rate and thermal stress of metal solidification process | |
| CN102879130A (en) | Continuous-casting casting powder comprehensive heat transfer heat flow testing method | |
| CN202501748U (en) | Heating device for use in experiments for high temperature phase transformation rules of metal and alloy solidification | |
| CN106092020B (en) | The test method of melt cinder film thickness in a kind of continuous cast mold | |
| CN102661967A (en) | Heat flow simulation test device of crystallizer meniscus horizontal heat transfer | |
| CN106041008B (en) | A kind of continuous cast mold adjacent corner molten steel initial solidification simulator and method | |
| CN105241915B (en) | A kind of application process of the device of test high-temperature metallurgical slag performance | |
| CN107622726A (en) | Covering slag crystallization and the analogue means and method of Heat transfer in a kind of lower continuous cast mold of electric pulse effect | |
| CN105880501A (en) | Method for measuring heat resistance of covering slag and crystallizer interface in continuous casting crystallizer | |
| CN105092406A (en) | Novel furnace slag crystallization process thermogravimetric test device and test method | |
| CN106645278A (en) | Rapid immersion type metal solidification heat transfer test device and application and application method thereof | |
| CN102680326A (en) | Device and method for testing hot crack of aluminum alloy under condition of active applied load | |
| CN102909332A (en) | Device and method for controlling superheat degree of molten steel in continuous casting ladle or tundish | |
| CN207408149U (en) | Robot automatic temperature measurement sampler before a kind of electric furnace | |
| Akbulut et al. | Thermal conductivities of solid and liquid phases for neopentylglycol, aminomethylpropanediol and their binary alloy | |
| CN105115860A (en) | Synchrotron radiation imaging-based visual alloy melt interdiffusion measuring method | |
| Ren et al. | Influence of high frequency electromagnetic field on the initial solidification during electromagnetic continuous casting | |
| Alkemper et al. | Solidification of aluminium alloys in aerogel moulds | |
| CN201979065U (en) | Steel belt melting measurement device | |
| CN106680313A (en) | Heat flux simulation device of continuous casting mold fluxes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20191103 |