CN214585389U - Device for rapidly measuring carbon content of liquid metal - Google Patents
Device for rapidly measuring carbon content of liquid metal Download PDFInfo
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- CN214585389U CN214585389U CN202120732695.8U CN202120732695U CN214585389U CN 214585389 U CN214585389 U CN 214585389U CN 202120732695 U CN202120732695 U CN 202120732695U CN 214585389 U CN214585389 U CN 214585389U
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Abstract
The utility model discloses a device of rapid survey liquid metal carbon content, by rapid survey liquid metal carbon content main part, steel cap, screw thread paper tube, sampler, first temperature measurement galvanic couple, signal lead, two compound resin sand probes, the semi-cast mould cup of molten steel crystallization fixed carbon, first temperature measurement ceramic member, second temperature measurement galvanic couple, the gate mouth, compound spliced eye, the steel sheet that promotes to congeal, second temperature measurement ceramic member and resin sand mould cup spliced eye constitute. A device of rapid survey liquid metal carbon content, the molten steel crystallization of setting is decided charcoal mold cup and is done inner bag disposable use cost low, the frock is efficient, the promotion that sets up steel sheet cooling effect is obvious, decides carbon resin sand mold cup upper end and establishes the spliced eye, other sensors such as temperature measurement of can easy to assemble, sample make many compound probes, but wide application in various liquid metal and big or small stove type that are fit for "the crystallization is decided the carbon" principle, bring better use prospect.
Description
Technical Field
The utility model relates to a sensor probe, which is mainly used for measuring the carbon content at the end point of the oxidation period of liquid metal (such as molten steel) smelting, and can be assembled with a temperature measuring and sampling probe to form a sublance composite probe device for a large converter with more than 200 tons.
Background
The existing method for determining carbon content in liquid metal is to use manual sampling and spectral analysis, to make mould cavity-sample cup from sand mould, ceramic, metal mould, glass suction tube or their composite, to make a small cone casting (with different geometric sizes) directly inserted into molten metal by manual operation, to make liquid metal component analysis samples after solidification, and then to send the samples to spectral analysis chamber to determine carbon content.
There are still two disadvantages:
1. the process time of sampling, sample feeding, sample polishing and sample preparation and spectral measurement is long (5 minutes), and the smelting efficiency is influenced.
2. Because the sampling operation all will see through the come-up slag layer of molten steel and the decomposition of sampler self material under the molten state, just can not avoid the pollution to the sample, if meet ultra low carbon (below 0.002%) steel, the sample ubiquitous recarburization, including the structure is unreasonable, will make the sample have the gas pocket, the shrinkage cavity, the shrinkage porosity, mix with, the crackle, cause defects such as chemical composition and metallographic structure segregation, the precision of sample still receives the influence of accidental factors such as temperature variation and sampler depth of insertion, the angle, time interval, point position nonconformity simultaneously.
In view of the above disadvantages, certain adverse effects are brought to the use process of people, and development of a method for rapidly and indirectly determining carbon is urgently needed, so that a device for rapidly measuring the carbon content of liquid metal is provided, and the problems are overcome.
SUMMERY OF THE UTILITY MODEL
Solves the technical problem
Aiming at the defects of the prior art, the utility model aims to provide a mode of 'measuring the crystallization temperature of liquid metal and indirectly determining carbon', which is directly arranged on a measuring probe of a converter manipulator-sublance for steelmaking, is rapidly inserted into the molten steel for measurement and display, can be spliced with a molten steel temperature measuring and sampling probe to form a sublance composite probe, and provides possibility for realizing the steelmaking of a computer dynamic model.
Technical scheme
In order to achieve the above purpose, the utility model adopts the following technical scheme: a device for rapidly measuring the carbon content of liquid metal comprises a main body for rapidly measuring the carbon content of liquid metal, wherein steel caps are arranged on the outer surfaces of two ends of the main body for rapidly measuring the carbon content of liquid metal, the main body for rapidly measuring the carbon content of liquid metal can be regarded as a threaded paper tube, but the threaded paper tube can not be regarded as a main body for rapidly measuring the carbon content of liquid metal, the inner wall of the threaded paper tube is fixedly connected with a connector, the outer surface of one end of the connector is fixedly connected with a signal lead, the inner wall of the threaded paper tube is movably connected with two groups of molten steel crystallization fixed carbon half casting cups, the inner walls of the two groups of molten steel crystallization fixed carbon half casting cups are provided with double composite resin sand probes, the outer surfaces of the lower ends of the double composite resin sand probes are detachably connected with resin sand casting cup inserting holes, one end inner surfaces of the double composite resin sand probes are provided with a sampler, and the same end inner surface of the double composite resin sand probes is provided with a first temperature measuring ceramic piece, the temperature measuring device is characterized in that the inner surface of the upper end of the first temperature measuring ceramic piece is detachably connected with a first temperature measuring couple, the inner surface of the lower end of the molten steel crystallization fixed carbon semi-casting cup is provided with a second temperature measuring ceramic piece, the inner wall of the molten steel crystallization fixed carbon semi-casting cup is provided with a coagulation promoting steel plate, the inner surface of one end of the molten steel crystallization fixed carbon semi-casting cup is provided with a sprue gate, the inner surface of the upper end of the molten steel crystallization fixed carbon semi-casting cup is provided with a composite inserting hole, and the inner wall of the second temperature measuring ceramic piece is detachably connected with a second temperature measuring couple.
Preferably, be provided with the fire clay between rapid survey liquid metal carbon content main part and the steel cap, the one end internal surface fixed connection of one end surface through fire clay and steel cap of rapid survey liquid metal carbon content main part.
Preferably, the outer wall of the sampler is fixedly connected with the inner wall of the double-composite resin sand probe through the fire-resistant glue, the fire-resistant glue is arranged between the double-composite resin sand probe and the first temperature measurement ceramic piece, and the inner wall of the double-composite resin sand probe is fixedly connected with the outer wall of the first temperature measurement ceramic piece through the fire-resistant glue.
Preferably, fire-resistant glue is arranged between the double-composite resin sand probe and the two groups of molten steel crystallization carbon-fixing half casting cups, and one end of the outer wall of the double-composite resin sand probe is fixedly connected with the inner wall of one end of each of the two groups of molten steel crystallization carbon-fixing half casting cups through the fire-resistant glue.
Preferably, fire clay is arranged between the two groups of molten steel crystallization carbon-fixing half casting cups, and the two groups of molten steel crystallization carbon-fixing half casting cups are fixedly connected together through the fire clay.
Preferably, a fire-resistant glue is arranged between the molten steel crystallization fixed carbon semi-casting cup and the second temperature measurement ceramic piece, the inner surface of the lower end of the molten steel crystallization fixed carbon semi-casting cup is fixedly connected with the outer wall of the second temperature measurement ceramic piece through the fire-resistant glue, the fire-resistant glue is arranged between the molten steel crystallization fixed carbon semi-casting cup and the coagulation promoting steel plate, and the inner wall of the molten steel crystallization fixed carbon semi-casting cup is fixedly connected with the outer wall of the coagulation promoting steel plate through the fire-resistant glue.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses in, the inner bag is done to molten steel crystallization fixed carbon die-casting cup, has following advantage: firstly, the casting technology principle is applied, the core making technology of the casting mold shell core machine is mature, and the one-time use cost is low; splicing and packaging are convenient by using high-temperature fire-resistant glue, and the tooling efficiency is high; open pouring, direct exhaust and sufficient molten metal, ensures that the thermocouple senses temperature in time and meets the accurate requirement of crystallization and carbon fixation; the sensors for measuring temperature, sampling and the like can be conveniently compounded, and the temperature can be accurately measured under the severe liquid level conditions of large-scale converter steel slag thickness, bottom blowing disturbance, strong erosion and scouring and the like; the steel sample extracted together has uniform casting state, and completely eliminates the chemical composition and metallographic structure segregation defects caused by air holes, shrinkage cavities, shrinkage porosity, impurities, cracks and the like; the refractory refractoriness under load reaches 1700 ℃, thereby meeting the measurement requirements of various metal smelting furnaces and having the most practical value.
2. The utility model discloses in, the steel sheet cooling effect that promotes to congeal is obvious, and thickness can be according to "the carbon is decided in the crystallization" precision adjustment.
3. The utility model discloses in, decide carbon resin sand casting mold cup upper end and establish the spliced eye, other sensors such as temperature measurement, sample of can the easy to assemble make many compound probes.
4. The utility model discloses in, be applied to the computer and smelt dynamic model system, the rate of formation of surveying of 90% height, the overall process time is only 30 seconds short, fully embodies fast, reliable, accurate, has improved and has smelted the production rhythm.
5. The utility model discloses in, but wide application is in various liquid metal and big small furnace type that are fit for "crystallization carbon fixation" principle.
Drawings
Fig. 1 is a diagram of a finished product of the device for rapidly measuring the carbon content in liquid metal of the present invention.
Fig. 2 is a display diagram of step 1 in the device for rapidly measuring the carbon content in liquid metal of the present invention.
Fig. 3 is the utility model relates to a part show picture of temperature measurement, the two compound probes of sample of device of rapid survey liquid metal carbon content.
Fig. 4 is a display diagram of step 5 in the device for rapidly measuring the carbon content in liquid metal of the present invention.
Fig. 5 is a display diagram of step 2 in the device for rapidly measuring the carbon content in liquid metal of the present invention.
Fig. 6 shows a molten steel crystallization carbon-fixing semi-mold cup of a device for rapidly measuring the carbon content of liquid metal.
Fig. 7 is a display diagram of step 3 in the device for rapidly measuring the carbon content in liquid metal of the present invention.
Fig. 8 shows a temperature measuring, sampling and carbon determining integrated probe of the device for rapidly measuring the carbon content of liquid metal of the present invention.
Fig. 9 is an exploded view of fig. 8 according to the present invention.
Fig. 10 is a diagram showing step 4 of the apparatus for rapidly measuring the carbon content in liquid metal according to the present invention.
Fig. 11 is a display diagram of step 6 in the device for rapidly measuring the carbon content in liquid metal of the present invention.
In the figure: 1. rapidly measuring the main body of the content of liquid metal carbon; 2. a steel cap; 3. a threaded paper tube; 4. a sampler; 5. a first temperature measuring couple; 6. a signal lead; 7. a double composite resin sand probe; 8. crystallizing molten steel to fix carbon and semi-casting a mold cup; 9. a first temperature measuring ceramic piece; 10. a second temperature measuring couple; 11. a gate opening; 12. compounding inserting holes; 13. a set accelerating steel plate; 14. a second temperature measuring ceramic piece; 15. resin sand casting cup plug holes; 16. a connector assembly.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1-11, a device for rapidly measuring the carbon content of liquid metal comprises a body 1 for rapidly measuring the carbon content of liquid metal, steel caps 2 are arranged on the outer surfaces of the two ends of the body 1 for rapidly measuring the carbon content of liquid metal, the body 1 for rapidly measuring the carbon content of liquid metal can be regarded as a threaded paper tube 3, but the threaded paper tube 3 can not be regarded as a body 1 for rapidly measuring the carbon content of liquid metal, a connector 16 is fixedly connected to the inner wall of the threaded paper tube 3, a signal lead 6 is fixedly connected to the outer surface of one end of the connector 16, two groups of molten steel crystallization carbon-fixing half mold cups 8 are movably connected to the inner wall of the threaded paper tube 3, a double composite resin sand probe 7 is arranged on the inner wall of the two groups of molten steel crystallization carbon-fixing half mold cups 8, a resin sand mold cup insertion hole 15 is detachably connected to the outer surface of the lower end of the double composite resin sand probe 7, a sampler 4 is arranged on the inner surface of one end of the double composite resin sand probe 7, the inner surface of the same end of the double-composite resin sand probe 7 is provided with a first temperature measuring ceramic part 9, the inner surface of the upper end of the first temperature measuring ceramic part 9 is detachably connected with a first temperature measuring couple 5, the inner surface of the lower end of a group of molten steel crystallization fixed carbon semi-casting cups 8 is provided with a second temperature measuring ceramic part 14, the inner wall of the molten steel crystallization fixed carbon semi-casting cup 8 is provided with a coagulation accelerating steel plate 13, the inner surface of one end of the molten steel crystallization fixed carbon semi-casting cup 8 is provided with a sprue 11, the inner surface of the upper end of the molten steel crystallization fixed carbon semi-casting cup 8 is provided with a composite plug hole 12, and the inner wall of the second temperature measuring ceramic part 14 is detachably connected with a second temperature measuring couple 10.
Refractory mortar is arranged between the main body 1 for rapidly measuring the content of the liquid metal carbon and the steel cap 2, and the outer surface of one end of the main body 1 for rapidly measuring the content of the liquid metal carbon is fixedly connected with the inner surface of one end of the steel cap 2 through the refractory mortar; a fire-resistant glue is arranged between the sampler 4 and the double-composite resin sand probe 7, the outer wall of the sampler 4 is fixedly connected with the inner wall of the double-composite resin sand probe 7 through the fire-resistant glue, the fire-resistant glue is arranged between the double-composite resin sand probe 7 and the first temperature measuring ceramic piece 9, and the inner wall of the double-composite resin sand probe 7 is fixedly connected with the outer wall of the first temperature measuring ceramic piece 9 through the fire-resistant glue; fire-resistant glue is arranged between the double-composite resin sand probe 7 and the two groups of molten steel crystallization carbon-fixing semi-casting mold cups 8, and one end of the outer wall of the double-composite resin sand probe 7 is fixedly connected with the inner wall of one end of each of the two groups of molten steel crystallization carbon-fixing semi-casting mold cups 8 through the fire-resistant glue; refractory mortar is arranged between the two groups of molten steel crystallization fixed carbon semi-casting mold cups 8, and the two groups of molten steel crystallization fixed carbon semi-casting mold cups 8 are fixedly connected together through the refractory mortar; fire-resistant glue is arranged between the group of molten steel crystallization fixed carbon semi-casting cup 8 and the second temperature measurement ceramic piece 14, the inner surface of the lower end of the group of molten steel crystallization fixed carbon semi-casting cup 8 is fixedly connected with the outer wall of the second temperature measurement ceramic piece 14 through the fire-resistant glue, the fire-resistant glue is arranged between the molten steel crystallization fixed carbon semi-casting cup 8 and the coagulation promoting steel plate 13, and the inner wall of the molten steel crystallization fixed carbon semi-casting cup 8 is fixedly connected with the outer wall of the coagulation promoting steel plate 13 through the fire-resistant glue.
It should be noted that the present invention relates to a device for rapidly measuring the carbon content in liquid metal, and the embodiment of the manufacturing method of the device for rapidly measuring the carbon content in liquid metal comprises the following steps in sequence:
1. as shown in FIG. 2, a group of resin sand mold cups with the outer diameter phi of 53 multiplied by the height 150mm are processed by a casting hot core box coated sand shell core machine, and are formed by bonding two groups of molten steel crystallization fixed carbon semi-mold cups 8, and a molten metal sprue, a sprue gate 11, an inner cavity, an exhaust chamber, a splicing temperature measurement and composite plug hole 12 are designed;
2. as shown in fig. 5, a group of second temperature measuring thermocouples 10 and two groups of accelerating steel plates 13 are bonded in the inner cavity, and the temperature is cooled within 6 seconds, the crystallization temperature is measured, and the corresponding carbon content is calculated;
3. as shown in fig. 7, the double composite resin sand probe 7 is also manufactured into a group of hot core box coated sand mold structures with the outer diameter phi of 53 multiplied by the height 105mm, a group of first temperature measuring couples 5 for measuring molten metal and a group of samplers 4 are arranged in holes, and after prefabrication is completed, the probes can be firmly adhered to the composite inserting holes 12 of the resin sand casting mold cup in fig. 1 according to needs to manufacture a three-composite integrated probe for measuring temperature, sampling and fixing carbon;
4. as shown in FIG. 10, a group of burning-resistant threaded paper tubes 3 with inner diameter phi 54 multiplied by outer diameter 80 multiplied by length 2000mm is manufactured, and phi 26mm holes are opened at the upper end 126mm as drainage ports of a fixed carbon resin sand mold cup pouring gate port 11;
5. as shown in fig. 4, the sensor signal lead 6 is connected to the connector 16 in the screw paper tube 3 and fixed by penetrating the paper tube with an external code nail;
6. as shown in fig. 11, a fixed carbon resin sand mold cup or a temperature measuring, sampling and carbon fixing three-composite integrated resin sand mold sensor is inserted into the upper end of a threaded paper tube 3, namely fig. 4, and is firmly packaged by refractory mortar and a steel cap 2, so that a finished product, namely fig. 1, can be obtained;
7. the operation is as follows: the signal lead 6 of the sensor is connected with a connector 16 in the threaded paper tube 3 and fixed by a code nail penetrating the paper tube, a probe is automatically inserted into a sublance manipulator of the field smelting furnace and vertically inserted into molten metal at the speed of 2 m/s for measurement, data is displayed on a computer screen and dynamic smelting calculation is carried out, automatic operation of identifying and guiding double lives of end point carbon and end point temperature is completed, the sublance is automatically lifted out of the smelting furnace after measurement, the probe burnt out is pulled out by the manipulator, and one-time automatic measurement is completed.
Effects of the implementation
The applicant manufactures and assembles 1 ten thousand by the method of 'the device for rapidly measuring the carbon content of the liquid metal', 1-12 months in 2020, successfully uses the device in a converter sublance computer steelmaking system of 200 tons of Tai steel, obtains consistent and good comment, meets the requirements of accurate carbon determination of smelting of high-quality carbon steel, cold-rolled silicon steel, pure iron, stainless steel, wheel axle steel, X80 pipeline steel, steel for military industry, nuclear power and major bridge in estuary, has a yield value of 105 ten thousand yuan, and greatly reduces the cost of steel per ton. The steel sample obtained by the sampler device of the composite probe simultaneously is matched and corresponds to the crystallization carbon determination data through the spectrum carbon content value obtained by the full-automatic analysis and inspection device, the accuracy of the ' carbon determination by a crystallization temperature measurement method ' of the ' device for rapidly measuring the carbon content of liquid metal is further verified, the difficult problem of obtaining a plurality of internal control standard samples required by continuous steel making, rapid production and steel research and development is solved, and the component calculation and analysis accuracy reaches the national and international standards.
It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a device of rapid survey liquid metal carbon content, includes rapid survey liquid metal carbon content main part (1), its characterized in that: the outer surfaces of two ends of the main body (1) for rapidly measuring the carbon content of the liquid metal are provided with steel caps (2), the main body (1) for rapidly measuring the carbon content of the liquid metal can be regarded as a threaded paper tube (3), but the threaded paper tube (3) can not be regarded as the main body (1) for rapidly measuring the carbon content of the liquid metal, the inner wall of the threaded paper tube (3) is fixedly connected with a connector (16), the outer surface of one end of the connector (16) is fixedly connected with a signal lead (6), the inner wall of the threaded paper tube (3) is movably connected with two groups of molten steel crystallization fixed carbon semi-casting mold cups (8), the inner walls of the two groups of molten steel crystallization fixed carbon semi-casting mold cups (8) are provided with double composite resin sand probes (7), the outer surface of the lower end of each double composite resin sand probe (7) is detachably connected with a resin sand casting mold cup inserting hole (15), and the inner surface of one end of each double composite resin sand probe (7) is provided with a sampler (4), the double-composite resin sand probe is characterized in that a first temperature measuring ceramic part (9) is arranged on the inner surface of the same end of the double-composite resin sand probe (7), a first temperature measuring galvanic couple (5) is detachably connected to the inner surface of the upper end of the first temperature measuring ceramic part (9), a second temperature measuring ceramic part (14) is arranged on the inner surface of the lower end of the molten steel crystallization fixed carbon semi-casting cup (8), a coagulation accelerating steel plate (13) is arranged on the inner wall of the molten steel crystallization fixed carbon semi-casting cup (8), a pouring gate opening (11) is formed in the inner surface of one end of the molten steel crystallization fixed carbon semi-casting cup (8), a composite inserting hole (12) is formed in the inner surface of the upper end of the molten steel crystallization fixed carbon semi-casting cup (8), and the inner wall of the second temperature measuring galvanic couple (10) is detachably connected to the inner wall of the second temperature measuring ceramic part (14).
2. The device for rapidly measuring the carbon content of the liquid metal as claimed in claim 1, wherein: be provided with the fire clay between rapid survey liquid metal carbon content main part (1) and steel cap (2), the one end internal surface fixed connection of one end surface through fire clay and steel cap (2) of rapid survey liquid metal carbon content main part (1).
3. The device for rapidly measuring the carbon content of the liquid metal as claimed in claim 1, wherein: be provided with fire-resistant glue between sampler (4) and two compound resin sand probe (7), the outer wall of sampler (4) passes through the inner wall fixed connection of fire-resistant glue and two compound resin sand probe (7), be provided with fire-resistant glue between two compound resin sand probe (7) and first temperature measurement ceramic member (9), the outer wall fixed connection of the inner wall of two compound resin sand probe (7) through fire-resistant glue and first temperature measurement ceramic member (9).
4. The device for rapidly measuring the carbon content of the liquid metal as claimed in claim 1, wherein: and fire-resistant glue is arranged between the double-composite resin sand probe (7) and the two groups of molten steel crystallization carbon-fixing semi-casting mold cups (8), and one end of the outer wall of the double-composite resin sand probe (7) is fixedly connected with the inner wall of one end of each of the two groups of molten steel crystallization carbon-fixing semi-casting mold cups (8) through the fire-resistant glue.
5. The device for rapidly measuring the carbon content of the liquid metal as claimed in claim 1, wherein: refractory mortar is arranged between the two groups of molten steel crystallization fixed carbon semi-casting mold cups (8), and the two groups of molten steel crystallization fixed carbon semi-casting mold cups (8) are fixedly connected together through the refractory mortar.
6. The device for rapidly measuring the carbon content of the liquid metal as claimed in claim 1, wherein: a set of be provided with fire-resistant glue between semi-casting cup of charcoal (8) and second temperature measurement ceramic member (14) is decided in the molten steel crystallization, a set of the outer wall fixed connection of fire-resistant glue and second temperature measurement ceramic member (14) is passed through to the lower extreme internal surface of semi-casting cup of charcoal (8) is decided in the molten steel crystallization, be provided with fire-resistant glue between semi-casting cup of charcoal (8) and the accelerated coagulation steel sheet (13) is decided in the molten steel crystallization, the outer wall fixed connection of fire-resistant glue and accelerated coagulation steel sheet (13) is passed through to the inner wall of semi-casting cup of charcoal (8) is decided in the molten steel crystallization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120732695.8U CN214585389U (en) | 2021-04-12 | 2021-04-12 | Device for rapidly measuring carbon content of liquid metal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120732695.8U CN214585389U (en) | 2021-04-12 | 2021-04-12 | Device for rapidly measuring carbon content of liquid metal |
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| CN214585389U true CN214585389U (en) | 2021-11-02 |
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| CN202120732695.8U Active CN214585389U (en) | 2021-04-12 | 2021-04-12 | Device for rapidly measuring carbon content of liquid metal |
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- 2021-04-12 CN CN202120732695.8U patent/CN214585389U/en active Active
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