CN117007590A - Method and device for observing scrap steel melting - Google Patents
Method and device for observing scrap steel melting Download PDFInfo
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- CN117007590A CN117007590A CN202310833750.6A CN202310833750A CN117007590A CN 117007590 A CN117007590 A CN 117007590A CN 202310833750 A CN202310833750 A CN 202310833750A CN 117007590 A CN117007590 A CN 117007590A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 199
- 239000010959 steel Substances 0.000 title claims abstract description 199
- 238000002844 melting Methods 0.000 title claims abstract description 80
- 230000008018 melting Effects 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000011065 in-situ storage Methods 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000003384 imaging method Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000010309 melting process Methods 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000011112 process operation Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8405—Application to two-phase or mixed materials, e.g. gas dissolved in liquids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
The application provides a method and a device for observing scrap steel melting, which belong to the technical field of scrap steel melting in-situ observation, and comprise the following steps: heating a steel sample in a high-temperature laser confocal microscope in an inert atmosphere to obtain liquid molten steel; and adding the scrap steel into the liquid molten steel for melting, and then adopting a high-temperature laser confocal microscope to synchronously observe the scrap steel melting in situ to obtain scrap steel melting information. The method utilizes the high-temperature confocal microscope to realize the real process of online in-situ observation of the melting of the scrap steel in the steel for the first time, can effectively record the information characteristics of the temperature, the morphology, the size and the like from the beginning to the end of the melting of the scrap steel, can complete the melting rule of the scrap steel along with the change of time through the recorded information, can realize the conditions of different granularity and different scrap steel ratio, and provides better guidance and reference for actual production.
Description
Technical Field
The application relates to the technical field of scrap steel melting in-situ observation, in particular to a method and a device for observing scrap steel melting.
Background
The iron and steel raw materials smelted by the converter mainly comprise molten iron and scrap steel, and the scrap steel can be added in the converter steelmaking of China at present, and meanwhile, the scrap steel ratio tends to be increased due to the relatively low scrap steel ratio. And meanwhile, scrap steel is added into the electric furnace steel, so that the social scrap steel production is gradually increased along with the gradual arrival of the service period of a plurality of steel products, and the proportion of the electric furnace steel is gradually increased. Knowing the melting process of scrap in steel, providing corresponding guidance and reference for the addition of scrap and determination of melting time and formulation of process operations has become an increasingly interesting issue.
At present, no online in-situ observation method for the scrap steel melting process is reported.
Disclosure of Invention
The embodiment of the application provides a method and a device for observing scrap steel melting, which are used for solving the technical problem that no method for carrying out online in-situ observation on the scrap steel melting process is reported at present.
In a first aspect, embodiments of the present application provide a method of observing scrap melting, the method comprising:
heating a steel sample in a high-temperature laser confocal microscope in an inert atmosphere to obtain liquid molten steel;
and adding the scrap steel into the liquid molten steel for melting, and then adopting a high-temperature laser confocal microscope to synchronously observe the scrap steel melting in situ to obtain scrap steel melting information.
Further, the heating of the steel sample of the high temperature laser confocal microscope in an inert atmosphere to obtain liquid molten steel specifically comprises:
and placing the steel sample in a metallographic heating furnace of a high-temperature laser confocal microscope, and then adopting infrared rays emitted by the high-temperature laser confocal microscope to carry out radiation heating on the steel sample in an inert atmosphere to obtain liquid molten steel.
Further, the parameters of heating include: the temperature is 1500-1600 ℃, and the constant temperature holding time is 60-300 s.
Further, the method comprises the steps of adding the scrap steel into the liquid molten steel for melting, and then adopting a high-temperature laser confocal microscope to synchronously observe the scrap steel melting in situ to obtain scrap steel melting information, and specifically comprises the following steps:
and adding the scrap steel into the liquid molten steel for melting, and then adopting an imaging system of a high-temperature laser confocal microscope to synchronously perform in-situ observation of scrap steel melting to obtain scrap steel melting information.
Further, the steel sample comprises the following chemical components in percentage by mass:
c:2 to 5 weight percent, si:0.2 to 0.8 weight percent, mn:0.1 to 1 weight percent, P:0.01 to 0.08 weight percent, S:0.01 to 0.07 weight percent, and the balance of Fe and unavoidable impurities.
Further, the chemical components of the scrap steel include, in mass fraction:
c:0.1 to 5 weight percent, si:0.1 to 0.8 weight percent, mn:0.1 to 5 weight percent, P:0.003 to 0.08 weight percent, S:0.0005wt% -0.01 wt%, and the balance being Fe and unavoidable impurities.
Further, the shape of the steel sample is a cylinder.
Further, the shape of the scrap steel is a cube with a side length of 1-5 mm.
Further, the cube includes a cube, a cuboid, or a sphere.
In a second aspect, an embodiment of the present application provides a high-temperature laser confocal microscope used in combination with the method for observing scrap steel melting according to the first aspect, where the high-temperature laser confocal microscope device includes a scrap steel in-situ adding device;
the scrap steel in-situ adding device comprises: a fixing piece and a scrap steel in-situ adding device body;
the fixing piece is used for fixing the scrap steel in-situ adding device on the high-temperature laser confocal microscope;
the scrap steel in-situ adding device body comprises: the device comprises a charging port, a first scribing, a second scribing, a first hole, a second hole and an internal focusing device.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the embodiment of the application provides a method for observing scrap steel melting, which utilizes a high-temperature confocal microscope to realize the real process of online in-situ observation of scrap steel melting in steel at high temperature for the first time, can effectively record the information characteristics of temperature, morphology, size and the like from the beginning to the end of scrap steel melting, can complete the melting rule of scrap steel changing along with time through the recorded information, can realize the conditions of different granularity and different scrap steel ratio, and provides better guidance and reference for actual production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic flow chart of a method for observing scrap steel melting according to an embodiment of the application;
fig. 2 is a schematic structural diagram of a scrap steel in-situ adding device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram II of a scrap steel in-situ adding device according to an embodiment of the present application.
Detailed Description
The advantages and various effects of the present application will be more clearly apparent from the following detailed description and examples. It will be understood by those skilled in the art that these specific embodiments and examples are intended to illustrate the application, not to limit the application.
Throughout the specification, unless specifically indicated otherwise, the terms used herein should be understood as meaning as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In case of conflict, the present specification will control.
Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present application are commercially available or may be prepared by existing methods.
The iron and steel raw materials smelted by the converter mainly comprise molten iron and scrap steel, and the scrap steel can be added in the converter steelmaking of China at present, and meanwhile, the scrap steel ratio tends to be increased due to the relatively low scrap steel ratio. And meanwhile, scrap steel is added into the electric furnace steel, so that the social scrap steel production is gradually increased along with the gradual arrival of the service period of a plurality of steel products, and the proportion of the electric furnace steel is gradually increased. Knowing the melting process of scrap in steel, providing corresponding guidance and reference for the addition of scrap and determination of melting time and formulation of process operations has become an increasingly interesting issue. Conventional can only be roughly estimated through experience and extensive industrial practice. Meanwhile, the metallurgical index control condition of the scrap ratio is different in different proportions, for example, when the scrap ratio exceeds 20%, the temperature hit rate is reduced, and the temperature is increased due to low supplementary blowing rate. And when the temperature is increased by 10 ℃ during the reblowing, 140kg of iron needs to be oxidized, the consumption of iron and steel materials is increased by about 2.8kg/t, and the cost is increased. It is therefore of particular importance to understand the actual scrap melting process.
At present, no online in-situ observation method for the scrap steel melting process is reported.
The technical scheme provided by the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:
in a first aspect, an embodiment of the present application provides a method for observing scrap melting, as shown in fig. 1, the method including:
heating a steel sample in a high-temperature laser confocal microscope in an inert atmosphere to obtain liquid molten steel;
and adding the scrap steel into the liquid molten steel for melting, and then adopting a high-temperature laser confocal microscope to synchronously observe the scrap steel melting in situ to obtain scrap steel melting information.
The embodiment of the application provides a method for observing scrap steel melting, which utilizes a high-temperature confocal microscope to realize the real process of online in-situ observation of scrap steel melting in steel at high temperature for the first time, can effectively record the information characteristics of temperature, morphology, size and the like from the beginning to the end of scrap steel melting, can complete the melting rule of scrap steel changing along with time through the recorded information, can realize the conditions of different granularity and different scrap steel ratio, and provides better guidance and reference for actual production.
As an implementation manner of the embodiment of the present application, heating a steel sample of a high-temperature laser confocal microscope in an inert atmosphere to obtain liquid molten steel specifically includes:
and placing the steel sample in a metallographic heating furnace of a high-temperature laser confocal microscope, and then adopting infrared rays emitted by the high-temperature laser confocal microscope to carry out radiation heating on the steel sample in an inert atmosphere to obtain liquid molten steel.
In some embodiments of the present application, when the infrared ray emitted by the high-temperature laser confocal microscope is used to perform radiant heating on the molten steel sample, the infrared ray may be emitted by a 1.5KW halogen light source.
In some embodiments of the application, the steel sample can be heated in an inert atmosphere by continuously filling inert gases such as argon after the vacuum-pumping treatment of the metallographic heating furnace of the high-temperature laser confocal microscope.
As an implementation of the embodiment of the present application, the heating parameters include: the temperature is 1500-1600 ℃, and the constant temperature holding time is 60-300 s.
In some embodiments of the present application, the temperature of heating may be 1510 ℃, 1520 ℃, 1530 ℃, 1540 ℃, 1550 ℃, 1560 ℃, 1570 ℃, 1580 ℃, 1590 ℃, 1600 ℃, etc.; the constant temperature holding time may be 60s, 70s, 80s, 90s, 100s, 120s, 140s, 160s, 180s, 200s, 220s, 240s, 260s, 280s, 300s, etc.
In some embodiments, the temperature measurement and monitoring of the slag sample can be performed in real time through an R-type thermocouple of the high-temperature laser confocal microscope.
As an implementation mode of the embodiment of the application, the method comprises the steps of adding the scrap steel into the liquid molten steel for melting, and then adopting a high-temperature laser confocal microscope to synchronously observe the scrap steel melting in situ to obtain scrap steel melting information, and specifically comprises the following steps:
and adding the scrap steel into the liquid molten steel for melting, and then adopting an imaging system of a high-temperature laser confocal microscope to synchronously perform in-situ observation of scrap steel melting to obtain scrap steel melting information.
According to the application, the imaging system of the high-temperature laser confocal microscope is utilized to carry out high-speed scanning on the surface of molten steel so as to realize synchronous in-situ observation on scrap steel melting, the information characteristics of temperature, morphology, size and the like from beginning to ending of scrap steel melting are recorded, the melting rule of scrap steel changing along with time is completed through the recorded information, and guidance is provided for actual production.
As an implementation mode of the embodiment of the application, the steel sample comprises the following chemical components in percentage by mass:
c:2 to 5 weight percent, si:0.2 to 0.8 weight percent, mn:0.1 to 1 weight percent, P:0.01 to 0.08 weight percent, S:0.01 to 0.07 weight percent, and the balance of Fe and unavoidable impurities.
In the application, in order to be more in line with the actual production process of steel smelting, the steel sample is adopted to carry out scrap steel melting observation, and the obtained result has more practical guiding significance.
As an implementation mode of the embodiment of the application, the chemical components of the scrap steel comprise, in mass fraction:
c:0.1 to 5 weight percent, si:0.1 to 0.8 weight percent, mn:0.1 to 5 weight percent, P:0.003 to 0.08 weight percent, S:0.0005wt% -0.01 wt%, and the balance being Fe and unavoidable impurities.
In the application, in order to be more in line with the actual production process of steel smelting, the scrap steel is adopted to carry out scrap steel melting observation, and the obtained result has more practical guiding significance.
As an implementation of the embodiment of the present application, the steel sample is cylindrical in shape.
In the application, the function of controlling the shape of the steel sample to be a cylinder is to facilitate the addition and the information statistics during the subsequent scrap steel melting.
As an implementation mode of the embodiment of the application, the shape of the scrap steel is a cube with side length of 1-5 mm.
In the application, the function of controlling the shape of the scrap steel to be a cube with the side length of 1-5 mm is convenient for adding and observing.
As an implementation of the embodiment of the present application, the cube includes a cube, a cuboid, or a sphere.
In a second aspect, an embodiment of the present application provides a high-temperature laser confocal microscope used in combination with the method for observing scrap steel melting according to the first aspect, as shown in fig. 2 and fig. 3, where the high-temperature laser confocal microscope device includes a scrap steel in-situ adding device;
the scrap steel in-situ adding device comprises: a fixing piece and a scrap steel in-situ adding device body;
the fixing piece is used for fixing the scrap steel in-situ adding device on the high-temperature laser confocal microscope;
the scrap steel in-situ adding device body comprises: the device comprises a charging port, a first scribing, a second scribing, a first hole, a second hole and an internal focusing device.
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. The experimental procedures, which are not specified in the following examples, are generally determined according to national standards. If the corresponding national standard does not exist, the method is carried out according to the general international standard, the conventional condition or the condition recommended by the manufacturer.
Example 1
The example provides a method for observing scrap steel melting, comprising the following steps:
(1) The actual smelting converter molten steel is selected as an experimental sample, and the components of the sample are as follows: 2 to 5 weight percent of C, 0.2 to 0.8 weight percent of Si, 0.1 to 1 weight percent of Mn, 0.01 to 0.08 weight percent of P, 0.01 to 0.07 weight percent of S and the balance of Fe;
(2) And (3) preparing a cylindrical sample from the steel sample, then placing the cylindrical sample into a container, placing the container into a metallographic heating furnace of a high-temperature laser confocal microscope, and adopting an in-situ adding device for a cover of the heating furnace. Adding scrap steel into a charging hole of the in-situ adding device, wherein the scrap steel can be square scrap steel with the side length of 1-5 mm or rectangular scrap steel with the length of 1-5 mm or round scrap steel with the diameter of 1-5 mm, and the scrap steel stays in the in-situ adding device;
(3) The mass ratio of the added scrap steel to the steel sample is 0.1-30%, the components of the added scrap steel are 0.1-5 wt% of C, 0.1-0.8 wt% of Si, 0.1-5 wt% of Mn, 0.003-0.08 wt% of P, 0.0005-0.01 wt% of S and the balance of Fe;
(4) Continuously filling inert gas after vacuumizing the metallographic heating furnace, carrying out radiation heating on the steel sample by utilizing infrared rays emitted by a high-temperature laser confocal microscope, and carrying out real-time temperature measurement on the steel sample by an R-type thermocouple arranged on the high-temperature laser confocal microscope; heating the steel sample to 1500-1600 ℃, and keeping the temperature for 60-300 s;
(5) Rotating an in-situ adding device to scribe so as to enable the scrap steel to fall into the liquid steel, keeping warm at the moment, and utilizing an imaging system of the high-temperature laser confocal microscope to scan the surface of the liquid steel at a high speed so as to realize synchronous in-situ observation of scrap steel melting, and recording the information characteristics of temperature, morphology, size and the like from the beginning to the end of scrap steel melting;
(6) The inert gas is argon, and when the infrared rays emitted by the high-temperature laser confocal microscope are used for carrying out radiation heating on the molten steel sample, the infrared rays are emitted by a 1.5KW halogen light source;
(7) When the high-temperature laser confocal microscope emits laser beams to irradiate the surface of the steel sample, the laser beams adopt He-Ne laser beams. When the imaging system of the high-temperature laser confocal microscope is used for scanning the surfaces of molten steel and scrap steel at a high speed, the scanning speed is 50 frames/second. After the metallographic heating furnace is vacuumized, the vacuum degree in the metallographic heating furnace is kept at 10 -3 ～10 -4 Torr；
(8) Operation of the in situ addition device: after the scrap is fed from the feed inlet, both dice remain in a concentric position with the focusing means, where the scrap is present in the furnace lid feeding means, i.e. in the hole of the die above the lower die. When the high-temperature confocal microscope is heated to a set temperature, the scribing device slides anticlockwise, the two scribing devices rotate towards the center of the focusing device at the same time, when the hole of the inner scribing device coincides with the center point of the observation hole in the vertical direction of the furnace cover, the device slides clockwise, the lowermost scribing device is just combined with the focusing device, and at the moment, the material falls down at the dry pot below for observing scrap steel melting behavior experimental study. Then sliding the scribing device clockwise, and combining the scribing device with the focusing device, wherein the in-situ material adding process is finished;
(9) And the melting rule of the scrap steel along with the change of time is completed through the recorded information, so that guidance is provided for actual production.
In summary, the embodiment of the application provides a method and a device for observing scrap steel melting, which firstly realize the real process of online in-situ observing scrap steel melting in steel at high temperature by using a high-temperature confocal microscope, can effectively record the information characteristics of temperature, morphology, size and the like from the beginning to the end of scrap steel melting, complete the melting rule of scrap steel changing along with time through the recorded information, realize the conditions of different granularity and different scrap steel ratio, and provide better guidance and reference for actual production.
It should be understood that the endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and that the range or value is to be understood as encompassing values close to the range or value. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
It should be noted that in this document, relational terms such as "first" and "second" and the like are 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. Moreover, 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. In addition, the term "and/or" appearing herein is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of observing scrap melting, the method comprising:
heating a steel sample in a high-temperature laser confocal microscope in an inert atmosphere to obtain liquid molten steel;
and adding the scrap steel into the liquid molten steel for melting, and then adopting a high-temperature laser confocal microscope to synchronously observe the scrap steel melting in situ to obtain scrap steel melting information.
2. The method for observing the melting of scrap steel according to claim 1, wherein the heating of the steel sample in the high temperature confocal laser microscope under an inert atmosphere to obtain liquid molten steel comprises:
and placing the steel sample in a metallographic heating furnace of a high-temperature laser confocal microscope, and then adopting infrared rays emitted by the high-temperature laser confocal microscope to carry out radiation heating on the steel sample in an inert atmosphere to obtain liquid molten steel.
3. The method of observing scrap melting in accordance with claim 1 wherein the parameters of heating include: the temperature is 1500-1600 ℃, and the constant temperature holding time is 60-300 s.
4. The method for observing scrap steel melting according to claim 1, wherein the step of adding scrap steel into the liquid molten steel for melting, and then adopting a high-temperature laser confocal microscope for synchronous in-situ observation of scrap steel melting to obtain scrap steel melting information comprises the following steps:
and adding the scrap steel into the liquid molten steel for melting, and then adopting an imaging system of a high-temperature laser confocal microscope to synchronously perform in-situ observation of scrap steel melting to obtain scrap steel melting information.
5. The method of observing scrap steel melting in accordance with claim 1 wherein the steel-like chemical composition includes, in mass fraction:
c:2 to 5 weight percent, si:0.2 to 0.8 weight percent, mn:0.1 to 1 weight percent, P:0.01 to 0.08 weight percent, S:0.01 to 0.07 weight percent, and the balance of Fe and unavoidable impurities.
6. The method of observing the melting of scrap steel according to claim 1, wherein the chemical composition of the scrap steel comprises, in mass fraction:
c:0.1 to 5 weight percent, si:0.1 to 0.8 weight percent, mn:0.1 to 5 weight percent, P:0.003 to 0.08 weight percent, S:0.0005wt% -0.01 wt%, and the balance being Fe and unavoidable impurities.
7. The method of observing scrap steel melting in accordance with claim 1 wherein the shape of the steel sample is a cylinder.
8. The method of observing the melting of scrap steel according to claim 1, wherein the shape of the scrap steel is a cube with a side length of 1 to 5 mm.
9. The method of observing scrap steel melting in accordance with claim 8 wherein the cube comprises a cube, cuboid or sphere.
10. A high temperature laser confocal microscope for use with the method of observing scrap steel melting according to any one of claims 1 to 9, characterized in that the high temperature laser confocal microscope device comprises a scrap steel in-situ addition device;
the scrap steel in-situ adding device comprises: a fixing piece and a scrap steel in-situ adding device body;
the fixing piece is used for fixing the scrap steel in-situ adding device on the high-temperature laser confocal microscope;
the scrap steel in-situ adding device body comprises: the device comprises a charging port, a first scribing, a second scribing, a first hole, a second hole and an internal focusing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310833750.6A CN117007590A (en) | 2023-07-07 | 2023-07-07 | Method and device for observing scrap steel melting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310833750.6A CN117007590A (en) | 2023-07-07 | 2023-07-07 | Method and device for observing scrap steel melting |
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| Publication Number | Publication Date |
|---|---|
| CN117007590A true CN117007590A (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310833750.6A Pending CN117007590A (en) | 2023-07-07 | 2023-07-07 | Method and device for observing scrap steel melting |
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| Country | Link |
|---|---|
| CN (1) | CN117007590A (en) |
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2023
- 2023-07-07 CN CN202310833750.6A patent/CN117007590A/en active Pending
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