CN203310766U - Device for testing melt and crystallization properties through double-wire method - Google Patents

Device for testing melt and crystallization properties through double-wire method Download PDF

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Publication number
CN203310766U
CN203310766U CN2013204159709U CN201320415970U CN203310766U CN 203310766 U CN203310766 U CN 203310766U CN 2013204159709 U CN2013204159709 U CN 2013204159709U CN 201320415970 U CN201320415970 U CN 201320415970U CN 203310766 U CN203310766 U CN 203310766U
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temperature
heating furnace
thermocouple
wire
camera
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CN2013204159709U
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施金良
吴云君
贾碧
马琼
许弟建
张亚军
王华斌
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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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Abstract

The utility model provides a device for testing melt and crystallization properties through a double-wire method; two thermocouple wires are arranged in a heating furnace body; a material to be molten is arranged between the two thermocouple wires; a camera is arranged above the heating furnace body, dead against the heating furnace body and is used for collecting the image of the material in the heating furnace body; the camera inputs the collected image into a computer processing device; each thermocouple wire is connected with a power supply through a controller, so that the thermocouple wire is electrified and emits heat under the control of the controller; each thermocouple wire is connected with a temperature measuring device and used as a temperature measuring probe; and the temperature measuring device inputs temperature signals collected by the thermocouple wires into the computer processing device connected with the temperature measuring device. According to the device disclosed by the utility model, the two thermocouple wires are used for measuring and controlling temperature respectively and independently, therefore, a test sample to be tested put between the thermal junctions of the two thermocouple wires is under one temperature difference; a temperature field between the wall of a continuous casting crystallizer and a casting blank is simulated; and changes, such as melt, crystallization and the like, of continuous casting slags in the temperature field are observed practically.

Description

Double-thread method fusing and crystal property proving installation
Technical field
The utility model relates to the fusing of related component in a kind of smelting iron and steel and the proving installation that crystal property is measured, especially double-thread method fusing and crystal property proving installation.
Background technology
In the smelting iron and steel industry, the material composition that blast-furnace slag, slag and continuous casting covering slag produce as steel smelting procedure, or to the protection component of adding in molten steel, physics, chemical property index that it can directly affect molten steel, directly determine the height of steel quality etc.; As, beginning temperature of fusion, molten temperature region, Tc and the percent crystallization in massecuite etc. of blast-furnace slag, slag and covering slag, be all important physical performance index, all has great significance for improving the quality of products, save the energy.
The control of continuous casting covering slag crystallization behavior is for reducing surface defect of bloom and guaranteeing that the direct motion of strand is significant.In continuous casting is produced; continuous casting covering slag is fused into slag under the high-temperature molten steel effect, infiltrate between crystallization wall and strand, owing between strand and crystallizer, there being larger temperature difference; slag meeting at night crystallize out after fusing needs to study the poor lower covering slag crystallization process of different temperature fields for this reason.
At present, Tc is measured and is the most often adopted differential thermal analysis, crystallization process and percent crystallization in massecuite are measured to normal employing monofilament method, but also there is following problem in said method:
1, can not simulate the temperature difference between crystallization wall and steel billet, measurement result and true environment there are differences;
2, can not measure different temperature fields poor under, the crystallization of slag specimen and heat transfer situation.
Summary of the invention
For above-mentioned deficiency of the prior art, fundamental purpose of the present utility model is to overcome prior art and can not the online observation material under different temperatures, melts, solidifies and the process of crystallization, especially can not simulate the deficiencies such as temperature difference between crystallization wall and steel billet in STEELMAKING PRODUCTION, a kind of double-thread method fusing and crystal property proving installation are provided.
The technical solution of the utility model is as follows: double-thread method fusing and crystal property proving installation, comprise heating furnace body, and it is characterized in that: two thermocouple wires are set in heating furnace body, material to be melted is set between two thermocouple wires; Camera is set on heating furnace body, over against heating furnace body, gathers the image of material in heating furnace body; In the image input computer processor unit that camera will gather, process and store; Every thermocouple wire is connected with power supply through controller, heating power under controller is controlled; Every thermocouple wire is connected with temperature measuring equipment, as temperature probe; Temperature measuring equipment is connected with computer processor unit, and the temperature signal that thermocouple wire gathers is inputted in computer processor unit.
Further feature is: a microscope is set, and microscope is over against the material in heating furnace body, and camera is arranged on microscopical back, over against microscope, gathers through microscope and amplifies the image after processing.
With respect to prior art, double-thread method fusing of the present utility model and crystal property proving installation have following beneficial effect:
1, the utility model adopts the double-thread method test, by two thermocouple wires independent thermometrics of difference and temperature control, can make to be placed on two tested sample between the thermocouple wire hot junction is under a temperature difference, simulation is in the temperature field between continuous casting crystallining wall and strand, the actual observation continuous casting covering slag is in the variations such as fusing in this temperature field, crystallization, for material performance research provides a kind of new means;
2, utilize image recognition technology, can calculate the crystallization area of measured object under different temperatures is poor;
3, the utility model is namely worked as heating element by traditional thermocouple wire and is worked as again temperature element, and, after utilizing microscope to amplify, by camera collection material melting and crystallization process image, realizes the overall process of online observation material melting and crystallization;
4, equipment power dissipation is low, testing efficiency is high, and the test result accuracy is higher.
The accompanying drawing explanation
Fig. 1 is the fusing of the utility model double-thread method and crystal property proving installation structural representation;
Fig. 2 is the utility model pick-up unit control structure schematic diagram;
Fig. 3 is the utility model device for detecting performance structural representation.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The fusing of the utility model double-thread method and crystal property proving installation, as shown in Figure 1, 2, 3, comprise heating furnace body 1, and heating furnace body 1 is miniature furnace, and two thermocouple wires 2 are arranged in heating furnace body 1, adjusts the distance between it according to technological requirement; Material to be melted is set between two thermocouple wires 2; Camera 3 is set on heating furnace body 1, over against heating furnace body 1, gathers the image of heating furnace body 1 interior material; Perhaps, in camera 3 fronts, a microscope 4 is set, microscope 4 is over against the interior material of heating furnace body 1, and camera 3 is arranged on the back (coordinating with the eyepiece of microscope 4) of microscope 4, over against microscope 4, gathers the image amplified after processing through microscope 4; Camera 3 can, with capture card 6, in the image input computer processor unit 8 gathered, be processed and store.Every thermocouple wire 2 is connected with power supply through controller 5, heating power under controller is controlled; Simultaneously, every thermocouple wire 2 is as temperature probe, with temperature measuring equipment 7, be connected, temperature measuring equipment 7 is connected with computer processor unit 8, perhaps by controller 5, be connected with computer processor unit 8, the temperature signal that thermocouple wire 2 gathers is inputted in computer processor unit 8, and machine treating apparatus 8 obtains temperature parameter after calculating, processing as calculated.Controller 5 can adopt independent control mode, also can link with computer processor unit 8, is subjected to the control signal that computer processor unit 8 sends to produce action.
Material to be melted is arranged between two thermocouple wires, two thermocouple wires are not only when heating element (resistive heater) but also when temperature element (temperature probe), by control device, carry out temperature control and temperature signal collection, by the RS232 communication, pass to computer processor unit (host computer), host computer is by material to be melted in capture card and the camera collection heating furnace image along with the rising of temperature, or the image of collection after microscope amplifies, image can be amplified to a lot of times, if amplified 40-80 doubly; On the computer screen of host computer, demonstrate in real time image more clearly, and carry out Image Saving according to user's setting means, but by the image off-line analysis after preserving and calculating material percent crystallization in massecuite.Control device adopts intelligent control algorithm, and temperature-controlled precision is high.Thermocouple wire is as heating element, under control device is controlled, heating after energising, heat material to be melted, as blast-furnace slag, slag and continuous casting covering slag or other blast furnace burden, due to the fusing point of the thermocouple wire fusing point higher than material to be melted, therefore after being heated to melting temperature, material to be melted just starts fusing until all melt, and whole process can show intuitively; And by the control of control device, the stopped heating that can also cut off the power supply in time after material melting, make the material melted at cooling middle Step crystallization, can observe the image of its crystallization process.
In Fig. 2, the heating of the utility model thermocouple wire drives principle of work with thermometric
For the heating that makes thermocouple wire and the measurement of temperature, can carry out, two thermocouple wires are namely worked as again temperature element when heating element, can distinguish independent thermometric and temperature control.Except adopting control device and the operation circuit of prior art, the utility model provides specialized designs hardware driving circuit as shown in Figure 2, in circuit, use metal-oxide-semiconductor as power component, thermocouple wire energising heating when the MOS conducting, during the MOS cut-off, carry out temperature survey, controlled by the single-chip microcomputer generation pwm signal of control device.Because the thermocouple wire power-off time is shorter, from continuous meaning, heating is carried out simultaneously with measurement.
After outage, the temporary transient no power of this root thermocouple wire, do not produced heat, it just can be used as temperature probe, is connected with temperature measuring equipment, and the temperature signal of this thermocouple wire is transported to temperature measuring equipment.
The utility model, by traditional thermocouple wire, as platinum rhodium thermocouple silk etc., not only work as heating element but also work as temperature element, perhaps in turn when heating element or temperature element, and, after utilizing microscope to amplify, by camera collection material melting and crystallization process image, realize the overall process of online observation material melting and crystallization.The utility model is placed on tested sample between two thermocouple wire hot junctions, owing between two thermocouple wires, temperature difference being arranged, tested sample is under a temperature difference, and the temperature field between simulation continuous casting crystallining wall and strand, for material performance research provides a kind of new means.
In addition, the control system that the utility model relates to and software thereof, meet the basic functions such as heat control and temperature detection that add of the present utility model; Mainly comprise: 1) system slave computer software: based on the scm software design, mainly by intelligent control algorithm, carry out temperature control, temperature-controlled precision is high; Temperature signal is gathered and digital filtering; Receive the host computer instruction and the signals such as temperature are transferred to host computer, possessing in addition demonstration, parameter setting, the functions such as hand, automatic control, have good interoperability.
2) system upper computer software: based on the programming under Windows operating system, mainly test parameter is set, as the design temperature curve, picture catching mode etc.; Drawing of Curve; Check historical data etc., have good human-computer interaction interface.
It should be noted that, above embodiment is only in order to technical solutions of the utility model to be described but not the restriction technologies scheme, although the applicant has been described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, those are modified to the technical solution of the utility model or are equal to replacement, and do not break away from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present utility model.

Claims (2)

1. double-thread method fusing and crystal property proving installation, comprise heating furnace body (1), it is characterized in that: two thermocouple wires (2) are set in heating furnace body (1), between two thermocouple wires (2), material to be melted are set; Camera (3) is set on heating furnace body (1), over against heating furnace body (1), gathers the image of the interior material of heating furnace body (1); In the image input computer processor unit (8) that camera (3) will gather, process and store; Every thermocouple wire (2) is connected with power supply through controller (5), heating power under controller (5) is controlled; Every thermocouple wire (2) is connected with temperature measuring equipment (7), as temperature probe; Temperature measuring equipment (7) is connected with computer processor unit (8), and the temperature signal that thermocouple wire (2) gathers is inputted in computer processor unit (8).
2. double-thread method melts and the crystal property proving installation according to claim 1, it is characterized in that: in camera (3) front, a microscope (4) is set, microscope (4) is over against the interior material of heating furnace body (1), and camera (3) gathers through microscope (4) and amplifies the image after processing.
CN2013204159709U 2013-07-12 2013-07-12 Device for testing melt and crystallization properties through double-wire method Active CN203310766U (en)

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Application Number Priority Date Filing Date Title
CN2013204159709U CN203310766U (en) 2013-07-12 2013-07-12 Device for testing melt and crystallization properties through double-wire method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092406A (en) * 2015-07-07 2015-11-25 中南大学 Novel furnace slag crystallization process thermogravimetric test device and test method
CN110018195A (en) * 2019-04-25 2019-07-16 中南大学 A kind of method of nondestructive characterisation (NDC) covering slag slag film heat transfer property

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092406A (en) * 2015-07-07 2015-11-25 中南大学 Novel furnace slag crystallization process thermogravimetric test device and test method
CN110018195A (en) * 2019-04-25 2019-07-16 中南大学 A kind of method of nondestructive characterisation (NDC) covering slag slag film heat transfer property
CN110018195B (en) * 2019-04-25 2020-07-31 中南大学 Method for nondestructively representing heat transfer performance of covering slag film

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