CN101793870A - On-line analysis device and method of inclusions in molten steel - Google Patents
On-line analysis device and method of inclusions in molten steel Download PDFInfo
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- CN101793870A CN101793870A CN 201010108178 CN201010108178A CN101793870A CN 101793870 A CN101793870 A CN 101793870A CN 201010108178 CN201010108178 CN 201010108178 CN 201010108178 A CN201010108178 A CN 201010108178A CN 101793870 A CN101793870 A CN 101793870A
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Abstract
The invention relates to an on-line analysis device and a method of inclusions in molten steel, belonging to the technical field of iron and steel smelting detection, the device comprises a support, a signal transceiver box and the like, and the device is characterized in that the signal transceiver box is fixed on the support, a signal transmitter and a signal receiver are arranged in the signal transceiver box, and two electromagnetic waveguide rods are arranged at the front end of the signal transceiver box and respectively connected with the signal transmitter and the signal receiver; an anti-slag cover is arranged in front of the electromagnetic waveguide rods; a cooling water chamber is arranged in the single transceiver box for closing the signal transmitter and the signal receiver therein, and circulating water is provided through a water inlet pipe and a water outlet pipe connected with the cooling water chamber; the signal transmitter and the signal receiver are respectively connected with a signal processor; and the signal processor is connected with a display for displaying signals after analysis and processing. The on-line analysis device and the method can realize the on-line detection of non-metallic inclusions in the molten steel, take the measures for avoiding the defects of a steel product and the mass loss in a timely manner, realize the real-time control of the production process and realize the fast and accurate on-line detection of the cleanliness of the molten steel.
Description
Affiliated technical field
The present invention relates to snotter on-line analysis device and method in a kind of molten steel, belong to smelting iron and steel detection technique field.
Background technology
Non-metallic inclusion is present in the steel mutually as independent, has destroyed the continuity of steel matrix, has strengthened the unevenness of organizing in the steel, the various performances of steel have been had a strong impact on, simultaneously, nonmetallic inclusionsin steel also causes continuous casting billet and stocking defective easily, causes waste product.Therefore, the quantity of snotter and the quilt identification that distributes are important indicators of evaluation molten steel cleanliness factor, at present, the nonmetal inclusion object detecting method mainly contains X ray transmission, sulphur print, electrolytic process, metallographic method, scanning electron microscope method etc. in the metal that generally adopts of metallurgical boundary.These methods all respectively have specific analyst coverage, and they mutually combine, and replenish mutually, have made the analyzing and testing of non-metallic inclusion reach certain level.But their common shortcomings all are off-line tests, detect after the steel moulding, lack representativeness, can't be implemented in line analysis, more can't be implemented in the line traffic control production operation, can not in time adjust production technology, avoid product defects and mass loss.So, real-time control production run, the cleanliness factor of online fast and accurately detection molten steel, improving the molten steel cleanliness factor is the gordian technique of Ferrous Metallurgy.At present, also do not have molten steel cleanliness factor online measuring technique and device, still, in non-ferrous metal metallurgy ripe application supercritical ultrasonics technology, electrical sensing zone method, vacuum filtration process come inclusion content and distribution in the online detection non-ferrous metal.Ultrasonic technology successfully is applied to the whole process supervision of aluminium liquid quality now, and the application of ultrasonic technology in molten steel at present also do not occur.96190353.8 disclose a kind of metal degree of purity evaluating apparatus and method thereof.The feature of this invention is, when the test portion evaluation that utilization is taked in the metal manufacture process causes the non-metallic inclusion number of particles that exists in the metal of product defect and composition etc., for can be representative good, estimate rapidly and at an easy rate, with cooling off crucible suspension melting device with sheet metal suspension melting certain hour, make the non-metallic inclusion particle that is present in this sheet metal be discharged to the molten mass surface, use direct analysis of fluorescent x-ary analysis of energy dispersion type optical splitter to solidify back bending and the level and smooth test portion surface of right and wrong, and by other the chemistry or the mensuration of physics, according to the amount of element of instrumentation or analysis formation non-metallic inclusion particle, identify the non-metallic inclusion amount.200610042800.5 disclose a kind of superonic spectrum detection method of aluminium alloy fine foreign matter.This disclosure of the Invention a kind of superonic spectrum detection method of aluminium alloy fine foreign matter, comprise the steps: at first to choose and tested aluminium alloy plate same thickness, the aluminium alloy test specimen of same model, according to detecting step production standard Nv-P curve, receiving transducer receives after the ultrasonic signal that passes tested aluminium alloy plate detection position, amplify through wide-band amplifier, by the ultrasonic signal sampling device sampled signal is imported in the computing machine again, utilize spectrum analysis software that the ultrasonic signal of sampling is carried out fast discrete Fourier conversion acquisition ultrasonic signal amplitude frequency diagram, calculate the relatively effectively spectral power P in the effective band scope on the amplitude frequency diagram according to formula p=n1 k=n0x (k) 2, on the Nv-P typical curve, can find corresponding snotter percent by volume Nv according to the P value that calculates.Utilize the above-mentioned method that ultrasound detection signal is carried out spectrum analysis, realized Non-Destructive Testing the following fine foreign matter of aluminium alloy 0.8mm.CN201089774 provides five-function revolving furnace sublance combined probe, and this probe comprises that measuring temp of molten steel, sampling, crystallization decide carbon, oxygen determination and liquid steel level measurement component fast accurate online detection is provided, but can not carry out the on-line analysis of snotter in the molten steel.
Summary of the invention
Be defective and the deficiency that overcomes prior art, the invention provides snotter on-line analysis device and method in a kind of molten steel reasonable in design, easy to use.
Snotter on-line analysis device in a kind of molten steel, comprise support, signal transceiver box, cooling water chamber, signal processor and display, it is characterized in that the signal transceiver box is fixed on the support, signal projector and signal receiver are housed in the signal transceiver box, signal transceiver box front end has two electromagnetic waveguide rods, link to each other with signal receiver with signal projector respectively, be beneficial in molten steel, launch and received ultrasonic signal from molten steel; For preventing to pollute, anti-slag cover is housed before the electromagnetic waveguide rod; In the signal transceiver box cooling water chamber is housed, cooling water chamber is enclosed in signal projector and signal receiver wherein, and providing recirculated water by water inlet pipe, the rising pipe that is connected with it is signal projector in the signal transceiver box and signal receiver cooling; Signal projector is connected with signal processor respectively with signal receiver, and with the signal launched in molten steel of control, and the signal of accepting to return from molten steel carries out next step signal analysis and processing; Signal processor is connected with display with the signal after the display analysis processing.
Described support is to be made by metal material.
Described two ultrasound waveguide rods tilt mutually to the inside, and angle becomes miter angle between the two.
Described anti-slag cover is to make with the fire retardant papers shell.
A kind of method of using said apparatus to carry out snotter on-line analysis in the molten steel, step is as follows:
(1) support is fixed on the lifting and moving device of steel in water container top;
(2) water inlet pipe and the rising pipe with snotter on-line analysis device in the molten steel connects, and connects the power supply of this device;
(3) open chilled water, for cooling water chamber provides recirculated water; The operation lifting and moving device makes the electromagnetic waveguide rod of snotter on-line analysis device in the molten steel be inserted into (attention: the signal transceiver box contact molten steel that does not make electromagnetic waveguide rod rear end) in the molten steel;
(4) the trigger pip transmitter makes it produce ultrasound wave, and ultrasound wave enters molten steel by the electromagnetic waveguide rod, enters into signal receiver by the electromagnetic waveguide rod again after the molten steel backspace, hyperacoustic feedback information is collected, and fed back to signal processor;
(5) hyperacoustic feedback information is delivered to display after by the signal processor analyzing and processing and is shown, can recognize content, the composition of non-metallic inclusion in the molten steel intuitively and locate big or small all information.
Above-mentioned lifting and moving device is meant general driving or hanging device.
The principle of the inventive method is to import computing machine after utilizing hyperacoustic feedback information by the signal processor analyzing and processing, utilizes real time spectral analysis software that ultrasonic signal is handled, and time-domain signal is changed into frequency-region signal, to obtain the ultrasonic signal amplitude frequency diagram; According to formula λ/D＜1, fe=c/ λ determines harmonic frequency fe, and wherein: c represents velocity of wave, and λ represents wavelength, and D represents distance; In conjunction with the effective spectral power of discrete Fourier transformation function calculation; Ultrasonic signal amplitude frequency diagram and effective spectral power by the inventive method gained just can intuitively be found out dopant species contained in the molten steel and quantity.
The purpose of this invention is to provide a kind of can online detection molten steel in the device of non-metallic inclusion, make it have in the detection Ferrous Metallurgy process of line stabilization non-metallic inclusion in the molten steel, in time adjust smelting process, make molten steel meet the requirements of cleanliness factor, carry out cast molding, reducing the generation of quality waste product.For this reason, the present invention uses for reference ripe ultrasonic detection technology, utilize snotter to hyperacoustic scattering process, the travel-time of scattering wave pulse and amplitude and snotter distribute and have relation, there is linear relationship in the ultrasonic energy decay with snotter, choose suitable structure, realized the online detection of non-metallic inclusion in the molten steel, and can effectively avoid the influence of slag.
Design feature of the present invention be the ultrasound waveguide rod in angle of 45 degrees, the ultrasound waveguide rod is taked water-cooling pattern, uses the sealing of fire retardant papers shell, the ultrasound waveguide rod is respectively transmitter and receptacle, plays in molten steel emission and the effect of received ultrasonic signal from molten steel; Lifting and moving device drives that snotter on-line analysis device moves up and down in the molten steel of the present invention, finishes the detection task.
Advantage of the present invention is to use its online detection that can realize non-metallic inclusion in the molten steel, can take measures in time to avoid product made from steel defective and mass loss, control production run that can be real-time, the cleanliness factor of online fast and accurately detection molten steel.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Wherein: 1. securing member, 2. support, 3. signal transceiver box, 4. signal projector, 5. anti-slag cover, 6. electromagnetic waveguide rod, 7. signal receiver, 8. cooling water chamber, 9. water inlet pipe, 10. rising pipe, 11. signal processors, 12. displays.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples, but be not limited thereto.
Embodiment 1:
The embodiment of the invention as shown in Figure 1, comprise support 2, signal transceiver box 3, cooling water chamber 8 and signal processor 11, it is characterized in that signal transceiver box 3 is fixed on the support 2 through securing member 1, signal projector 4 and signal receiver 7 are housed in the signal transceiver box 3, signal transceiver box 3 front ends have two electromagnetic waveguide rods 6, link to each other with signal receiver 7 with signal projector 4 respectively, be beneficial in molten steel, launch and received ultrasonic signal from molten steel; For preventing to pollute, anti-slag cover 5 is housed before electromagnetic waveguide rod 6; Cooling water chamber 8 is housed in the signal transceiver box 3, cooling water chamber 8 is enclosed in signal projector 4 and signal receiver 7 wherein, and providing recirculated water by water inlet pipe 9, the rising pipe 10 that is connected with it is that signal transceiver box 3 interior signal projector 4 and signal receivers 7 are lowered the temperature; Signal projector 4 is connected with signal processor 11 respectively with signal receiver 7, the signal of in molten steel, launching with control, and the signal of accepting from molten steel, to return carry out next step signal analysis and processing.
Described support 2 is to be made by ferrous materials.
Described ultrasound waveguide rod 6 tilts mutually to the inside, and two lead excellent angle becomes miter angle.
Described anti-slag cover is to make with the fire retardant papers shell.
Embodiment 2:
A kind of method of using said apparatus to carry out snotter on-line analysis in the molten steel, step is as follows:
(1) support 2 is fixed on the lifting and moving device of steel in water container top;
(2) water inlet pipe 9 and the rising pipe 10 with snotter on-line analysis device in the molten steel connects, and connects the power supply of this device;
(3) open chilled water, for cooling water chamber 8 provides recirculated water; The operation lifting and moving device makes the electromagnetic waveguide rod 6 of snotter on-line analysis device in the molten steel be inserted into (attention: the signal transceiver box contact molten steel that does not make electromagnetic waveguide rod rear end) in the molten steel;
(4) trigger pip transmitter 4 makes it produce ultrasound wave, and ultrasound wave enters molten steel by electromagnetic waveguide rod 6, enters into signal receiver 7 by electromagnetic waveguide rod 6 again after the molten steel backspace, hyperacoustic feedback information is collected, and fed back to signal processor 11;
(5) hyperacoustic feedback information is delivered to display 12 after by signal processor 11 analyzing and processing and is shown, can recognize content, the composition of non-metallic inclusion in the molten steel intuitively and locate big or small all information.
Claims (4)
1. snotter on-line analysis device in the molten steel, comprise support, signal transceiver box, cooling water chamber, signal processor and display, it is characterized in that the signal transceiver box is fixed on the support, signal projector and signal receiver are housed in the signal transceiver box, signal transceiver box front end has two electromagnetic waveguide rods, link to each other with signal receiver with signal projector respectively, be beneficial in molten steel, launch and received ultrasonic signal from molten steel; For preventing to pollute, anti-slag cover is housed before the electromagnetic waveguide rod; In the signal transceiver box cooling water chamber is housed, cooling water chamber is enclosed in signal projector and signal receiver wherein, and providing recirculated water by water inlet pipe, the rising pipe that is connected with it is signal projector in the signal transceiver box and signal receiver cooling; Signal projector is connected with signal processor respectively with signal receiver, and with the signal launched in molten steel of control, and the signal of accepting to return from molten steel carries out next step signal analysis and processing; Signal processor is connected with display with the signal after the display analysis processing.
2. snotter on-line analysis device in a kind of molten steel as claimed in claim 1 is characterized in that described two ultrasound waveguide rods tilt mutually to the inside, and angle becomes miter angle between the two.
3. snotter on-line analysis device in a kind of molten steel as claimed in claim 1 is characterized in that described anti-slag cover is to make with the fire retardant papers shell.
4. method of using the described device of claim 1 to carry out snotter on-line analysis in the molten steel, step is as follows:
(1) support is fixed on the lifting and moving device of steel in water container top;
(2) water inlet pipe and the rising pipe with snotter on-line analysis device in the molten steel connects, and connects the power supply of this device;
(3) open chilled water, for cooling water chamber provides recirculated water; The operation lifting and moving device is inserted in the molten steel electromagnetic waveguide rod of snotter on-line analysis device in the molten steel;
(4) the trigger pip transmitter makes it produce ultrasound wave, and ultrasound wave enters molten steel by the electromagnetic waveguide rod, enters into signal receiver by the electromagnetic waveguide rod again after the molten steel backspace, hyperacoustic feedback information is collected, and fed back to signal processor;
(5) hyperacoustic feedback information is delivered to display after by the signal processor analyzing and processing and is shown, can recognize content, the composition of non-metallic inclusion in the molten steel intuitively and locate big or small all information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010108178 CN101793870A (en) | 2010-02-10 | 2010-02-10 | On-line analysis device and method of inclusions in molten steel |
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| CN 201010108178 CN101793870A (en) | 2010-02-10 | 2010-02-10 | On-line analysis device and method of inclusions in molten steel |
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Citations (6)
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|---|---|---|---|---|
| US4563895A (en) * | 1984-08-20 | 1986-01-14 | Aluminum Company Of America | Apparatus and method for ultrasonic detection of inclusions in molten metals |
| GB2257786A (en) * | 1991-07-13 | 1993-01-20 | British Steel Plc | Liquid steel impurity detector |
| US5708209A (en) * | 1996-08-27 | 1998-01-13 | Aluminum Company Of America | Apparatus and method for ultrasonic particle detection in molten metal |
| CN1869680A (en) * | 2006-06-27 | 2006-11-29 | 上海大学 | Method for measuring effective propagation distance of ultrosonic in metal melt and its special device |
| CN101216477A (en) * | 2008-01-04 | 2008-07-09 | 莱芜钢铁股份有限公司 | In situ quantitative determination method for large-sized metallic inclusion |
| CN201615897U (en) * | 2010-02-10 | 2010-10-27 | 莱芜钢铁股份有限公司 | On-line analytical device for inclusion in molten steel |
-
2010
- 2010-02-10 CN CN 201010108178 patent/CN101793870A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563895A (en) * | 1984-08-20 | 1986-01-14 | Aluminum Company Of America | Apparatus and method for ultrasonic detection of inclusions in molten metals |
| GB2257786A (en) * | 1991-07-13 | 1993-01-20 | British Steel Plc | Liquid steel impurity detector |
| US5708209A (en) * | 1996-08-27 | 1998-01-13 | Aluminum Company Of America | Apparatus and method for ultrasonic particle detection in molten metal |
| CN1869680A (en) * | 2006-06-27 | 2006-11-29 | 上海大学 | Method for measuring effective propagation distance of ultrosonic in metal melt and its special device |
| CN101216477A (en) * | 2008-01-04 | 2008-07-09 | 莱芜钢铁股份有限公司 | In situ quantitative determination method for large-sized metallic inclusion |
| CN201615897U (en) * | 2010-02-10 | 2010-10-27 | 莱芜钢铁股份有限公司 | On-line analytical device for inclusion in molten steel |
Non-Patent Citations (1)
| Title |
|---|
| 《中国科技论文在线》 20081115 苑轶等 利用超声波在线检测液态金属洁净度的模拟研究 第3卷, 第11期 * |
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Open date: 20100804 |