CN113549829B - Dry coke quenching tank lining plate and preparation method and application thereof - Google Patents
Dry coke quenching tank lining plate and preparation method and application thereof Download PDFInfo
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- CN113549829B CN113549829B CN202110791925.2A CN202110791925A CN113549829B CN 113549829 B CN113549829 B CN 113549829B CN 202110791925 A CN202110791925 A CN 202110791925A CN 113549829 B CN113549829 B CN 113549829B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/84—Controlled slow cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Abstract
The invention relates to the technical field of coke quenching tank lining plates, in particular to a dry coke quenching tank lining plate and a preparation method and application thereof. The dry coke quenching tank lining plate provided by the invention comprises the following chemical components in percentage by mass: c:0.3-0.4%, cr:24-26%, ni:5-8%, si:1.0-2%, mn:1.0-1.9%, N:0.2-0.3%, re:0.05 to 0.08%, sb:0.01 to 0.03 percent of Fe, less than or equal to 0.02 percent of P, less than or equal to 0.02 percent of S and the balance of Fe and other inevitable impurities. The dry quenching tank lining plate provided by the invention adopts a high Cr and low C design idea, and a specific amount of Re and Sb are added into an alloy material, so that the dry quenching tank lining plate and other alloy components have synergistic effect, and the hardness, toughness, high-temperature wear resistance and other properties of the lining plate are favorably improved.
Description
Technical Field
The invention relates to the technical field of coke quenching tank lining plates, in particular to a dry coke quenching tank lining plate and a preparation method and application thereof.
Background
The coke quenching tank car is a matching device of the coke oven, generally runs on a track below the coke side of the coke oven, is used for receiving red coke which is guided out by a coke guide car and has the temperature of about 1000 ℃, and transports the red coke to a coke quenching boiler for quenching, and finally transports the quenched coke to a designated place. At present, two coke quenching modes, namely wet coke quenching and dry coke quenching, are mainly adopted, and compared with the wet coke quenching, the dry coke quenching technology has obvious advantages, can recover the sensible heat of red coke, is beneficial to the iron-making operation of a blast furnace and reduces the coke ratio.
The existing coke dry quenching tank is composed of an external structural frame and an internal fixed alloy lining plate, the lining plate of the coke dry quenching tank needs to continuously bear red coke with extremely high temperature, so that the high requirements on the hardness, toughness and high-temperature wear resistance of the lining plate are met, the existing coke dry quenching tank lining plate is made of cast steel materials such as ZG35Cr24Ni7SiN, the requirements of the lining plate on the performances such as hardness, toughness and high-temperature wear resistance cannot be effectively met, and therefore, the development of the lining plate of the coke dry quenching tank with more excellent performances such as hardness, toughness and high-temperature wear resistance is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects of limited performances such as hardness, toughness, high-temperature wear resistance and the like of the conventional dry coke quenching tank lining plate, and further provides the dry coke quenching tank lining plate and a preparation method and application thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the dry quenching coke tank lining plate comprises the following chemical components in percentage by mass: c:0.3-0.4%, cr:23-25.5%, ni:7-8.5%, si:1.3-2%, mn:0.8-1.5%, N:0.2-0.28%, re:0.05 to 0.08%, sb:0.01-0.03%, P is less than or equal to 0.02%, S is less than or equal to 0.02%, and the balance is Fe and other inevitable impurities.
Preferably, the paint comprises the following chemical components in percentage by mass: c:0.3%, cr:24%, ni:8%, si:1.5%, mn:1.0%, N:0.25%, re:0.06%, sb:0.02%, P:0.012%, S:0.008% and the balance of Fe and other inevitable impurities.
The invention also provides a preparation method of the dry quenching tank lining plate, which comprises the following steps:
1) Weighing the raw materials of the components according to the formula proportion, and smelting to obtain molten steel, wherein the molten steel comprises the following components in percentage by mass: c:0.3-0.4%, cr:24-26%, ni:5-8%, si:1.0-2%, mn:1.0-1.9%, N:0.2-0.3%, re:0.05 to 0.08%, sb:0.01 to 0.03 percent, less than or equal to 0.02 percent of P, less than or equal to 0.02 percent of S, and the balance of Fe and other inevitable impurities;
2) Casting and molding the molten steel to obtain a rough blank of the lining plate of the dry coke quenching tank;
3) Heating the rough blank of the dry quenching tank lining plate to 860-870 ℃ by using a vacuum radiation heating mode, preserving heat for 20-30min, immersing the rough blank into water after heat preservation is finished, cooling to 20-30 ℃, then heating the rough blank to 1000-1050 ℃ by using a vacuum radiation heating mode, preserving heat for 10-15min, and cooling to room temperature at a cooling rate of 1-5 ℃/min after heat preservation is finished to obtain the dry quenching tank lining plate.
Preferably, in the step 3), the rough blank of the dry quenching tank lining plate is heated to 865 ℃ in a vacuum radiation heating mode, the heat preservation time is 25min, after the heat preservation is finished, the rough blank is immersed in water to be cooled to 25 ℃, then the rough blank is heated to 1020 ℃ in a vacuum radiation heating mode, the heat preservation time is 12min, and after the heat preservation is finished, the rough blank is cooled to the room temperature at a cooling rate of 4 ℃/min, so that the dry quenching tank lining plate is obtained.
Preferably, the ratio of P:0.0001-0.02%, S:0.0001-0.02%.
Preferably, in the step 1), the molten steel comprises the following components in percentage by mass: c:0.3%, cr:24%, ni:6%, si:1.5%, mn:1.9%, N:0.3%, re:0.06%, sb:0.02%, P:0.012%, S:0.008% and the balance of Fe and other inevitable impurities.
Preferably, the raw materials of the components are weighed according to the formula proportion in the step 1), then an iron ingot is added into the medium-frequency electric furnace for smelting, and after the iron ingot is molten, carbon particles, chromium-nitrogen alloy, ferronickel, ferromanganese, ferrosilicon, metal antimony and rhenium are sequentially added for smelting to obtain the molten steel. The smelting step of the invention is a conventional smelting step in the field, and the smelting temperature can be determined according to specific materials, such as 1400-1500 ℃, and is not described herein again.
Preferably, in the step 2), the molten steel is poured into a forming mold through a pouring device for cooling and forming, and a dry quenching tank lining plate rough blank is obtained.
The invention also provides an application of the dry quenching tank lining plate or the dry quenching tank lining plate prepared by the preparation method in a quenching car.
The invention has the beneficial effects that:
1) The dry coke quenching tank lining plate provided by the invention adopts a high-Cr low-C design idea, cr element is beneficial to improving the hardenability of a steel plate, so that the steel plate is quickly subjected to phase change, the banded structure of the steel plate is reduced, the wear resistance and strength of the steel plate are improved, C element is taken as a strengthening element, but the C element is easy to segregate, the high-content C element is easy to promote the generation of cracks, meanwhile, a specific amount of Re and Sb are added into an alloy material, the Re and the Sb are matched with each other to refine grains and perform precipitation strengthening, and the Cr element and other alloy components are synergistic to be beneficial to improving the performances of the lining plate such as hardness, toughness, high-temperature wear resistance and the like.
2) The invention provides a preparation method of a dry coke quenching tank lining plate, which is characterized in that on the basis of the specific components, a specific method is used for post-treating a dry coke quenching tank lining plate rough blank, specifically, the rough blank is heated to 860-870 ℃ by adopting a vacuum radiation heating mode, then the rough blank is cooled by water to 20-30 ℃, then the rough blank is heated to 1000-1050 ℃ by adopting a vacuum radiation heating mode, and then the rough blank is cooled to room temperature at a very slow cooling rate.
Detailed Description
The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.
The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
Example 1
The embodiment provides a preparation method of a dry quenching tank lining plate, which comprises the following steps:
1) Weighing the raw materials of the components according to a formula ratio, adding an iron ingot into an intermediate frequency electric furnace for smelting, and sequentially adding carbon particles, chromium-nitrogen alloy, ferronickel, ferromanganese, ferrosilicon, metallic antimony and rhenium for smelting after the iron ingot is molten to obtain molten steel, wherein the molten steel comprises the following components in percentage by mass: c:0.3%, cr:24%, ni:6%, si:1.5%, mn:1.9%, N:0.3%, re:0.06%, sb:0.02%, P:0.012%, S:0.008% and the balance of Fe and other inevitable impurities;
2) Pouring molten steel into a forming die through a pouring device for cooling and forming to obtain a dry quenching tank lining plate rough blank, wherein the thickness of the rough blank is 25mm, the width of the rough blank is 500mm, and the length of the rough blank is 1000mm;
3) Heating the rough blank of the dry coke quenching tank lining plate to 865 ℃ by using a vacuum radiation heating mode, keeping the temperature for 25min, immersing the rough blank in water to cool to 25 ℃ after the heat preservation is finished, then heating the rough blank to 1020 ℃ by using a vacuum radiation heating mode, keeping the temperature for 12min, and cooling to room temperature at a cooling rate of 4 ℃/min after the heat preservation is finished to obtain the dry coke quenching tank lining plate.
Example 2
The embodiment provides a preparation method of a dry quenching coke tank lining plate, which comprises the following steps:
1) Weighing the raw materials of each component according to a formula ratio, adding an iron ingot into an intermediate frequency electric furnace for smelting, adding carbon particles, chromium-nitrogen alloy, ferronickel, ferromanganese, ferrosilicon, metal antimony and rhenium in sequence after the iron ingot is molten for smelting to obtain molten steel, wherein the molten steel comprises the following components in percentage by mass: c:0.4%, cr:24%, ni:8%, si:1.0%, mn:1.0%, N:0.3%, re:0.05%, sb:0.03%, P:0.01%, S:0.006% of Fe and other inevitable impurities as the rest;
2) Pouring molten steel into a forming die through a pouring device for cooling and forming to obtain a dry quenching tank lining plate rough blank, wherein the thickness of the rough blank is 25mm, the width of the rough blank is 500mm, and the length of the rough blank is 1000mm;
3) Heating the rough blank of the dry quenching tank lining plate to 860 ℃ by using a vacuum radiation heating mode, keeping the temperature for 30min, immersing the rough blank into water after the heat preservation is finished, cooling to 30 ℃, heating the rough blank to 1000 ℃ by using a vacuum radiation heating mode, keeping the temperature for 15min, and cooling to room temperature at a cooling rate of 1 ℃/min after the heat preservation is finished to obtain the dry quenching tank lining plate.
Example 3
The embodiment provides a preparation method of a dry quenching tank lining plate, which comprises the following steps:
1) Weighing the raw materials of each component according to a formula ratio, adding an iron ingot into an intermediate frequency electric furnace for smelting, adding carbon particles, chromium-nitrogen alloy, ferronickel, ferromanganese, ferrosilicon, metal antimony and rhenium in sequence after the iron ingot is molten for smelting to obtain molten steel, wherein the molten steel comprises the following components in percentage by mass: c:0.3%, cr:26%, ni:5%, si:2.0%, mn:1.9%, N:0.2%, re:0.08%, sb:0.01%, P:0.009%, S:0.007% and the balance of Fe and other inevitable impurities;
2) Pouring molten steel into a forming die through a pouring device for cooling and forming to obtain a dry quenching tank lining plate rough blank, wherein the thickness of the rough blank is 25mm, the width of the rough blank is 500mm, and the length of the rough blank is 1000mm;
3) Heating the rough blank of the dry coke quenching tank lining plate to 870 ℃ by using a vacuum radiation heating mode, keeping the temperature for 20min, immersing the rough blank into water after the heat preservation is finished, cooling to 20 ℃, then heating the rough blank to 1050 ℃ by using a vacuum radiation heating mode, keeping the temperature for 10min, and cooling to room temperature at a cooling rate of 5 ℃/min after the heat preservation is finished, thus obtaining the dry coke quenching tank lining plate.
Comparative example 1
The comparative example provides a preparation method of a dry quenching coke tank lining plate, which comprises the following steps:
1) Weighing the raw materials of the components according to a formula ratio, adding an iron ingot into an intermediate frequency electric furnace for smelting, and sequentially adding carbon particles, chromium-nitrogen alloy, ferronickel, ferromanganese, ferrosilicon and metal rhenium for smelting after the iron ingot is molten to obtain molten steel, wherein the molten steel comprises the following components in percentage by mass: c:0.3%, cr:24%, ni:6%, si:1.5%, mn:1.9%, N:0.3%, re:0.08%, P:0.012%, S:0.008% and the balance of Fe and other inevitable impurities;
2) Pouring molten steel into a forming die through a pouring device for cooling and forming to obtain a dry quenching tank lining plate rough blank, wherein the thickness of the rough blank is 25mm, the width of the rough blank is 500mm, and the length of the rough blank is 1000mm;
3) Heating the rough blank of the dry quenching tank lining plate to 865 ℃ by using a vacuum radiation heating mode, keeping the temperature for 25min, immersing the rough blank in water after the heat preservation is finished, cooling to 25 ℃, heating the rough blank to 1020 ℃ by using a vacuum radiation heating mode, keeping the temperature for 12min, and cooling to room temperature at a cooling rate of 4 ℃/min after the heat preservation is finished to obtain the dry quenching tank lining plate.
Comparative example 2
The comparative example provides a preparation method of a dry quenching coke tank lining plate, which comprises the following steps:
1) Weighing the raw materials of each component according to a formula ratio, adding an iron ingot into a medium-frequency electric furnace for smelting, adding carbon particles, chromium-nitrogen alloy, ferronickel, ferromanganese and ferrosilicon in sequence after the iron ingot is molten for smelting to obtain molten steel, wherein the molten steel comprises the following components in percentage by mass: c:0.3%, cr:24%, ni:6%, si:1.5%, mn:1.9%, N:0.3%, P:0.012%, S:0.008% and the balance of Fe and other inevitable impurities;
2) Pouring molten steel into a forming die through a pouring device for cooling and forming to obtain a dry quenching tank lining plate rough blank, wherein the thickness of the rough blank is 25mm, the width of the rough blank is 500mm, and the length of the rough blank is 1000mm;
3) Heating the rough blank of the dry coke quenching tank lining plate to 865 ℃ by using a vacuum radiation heating mode, keeping the temperature for 25min, immersing the rough blank in water to cool to 25 ℃ after the heat preservation is finished, then heating the rough blank to 1020 ℃ by using a vacuum radiation heating mode, keeping the temperature for 12min, and cooling to room temperature at a cooling rate of 4 ℃/min after the heat preservation is finished to obtain the dry coke quenching tank lining plate.
Comparative example 3
The comparative example provides a preparation method of a dry quenching tank lining plate, which is different from the embodiment 1 only in that in the step 3), a rough blank of the dry quenching tank lining plate is heated to 865 ℃ in a box-type resistance furnace (non-vacuum radiation heating), the heat preservation time is 25min, after the heat preservation is finished, the rough blank is immersed in water and cooled to 25 ℃, then the rough blank is heated to 1020 ℃ in the box-type resistance furnace (non-vacuum radiation heating), the heat preservation time is 12min, and after the heat preservation is finished, the rough blank is cooled to room temperature at a cooling rate of 4 ℃/min, so that the dry quenching tank lining plate is obtained.
Comparative example 4
The comparative example provides a preparation method of a dry quenching tank lining plate, which is different from the preparation method of the embodiment 1 only in that in the step 3), a rough blank of the dry quenching tank lining plate is heated to 865 ℃ in a vacuum radiation heating mode, the heat preservation time is 25min, after the heat preservation is finished, the rough blank is cooled to 25 ℃ in air, then the rough blank is heated to 1020 ℃ in a vacuum radiation heating mode, the heat preservation time is 12min, and after the heat preservation is finished, the rough blank is cooled to the room temperature at a cooling rate of 4 ℃/min to obtain the dry quenching tank lining plate.
Comparative example 5
The comparative example provides a preparation method of a dry quenching tank lining plate, which is different from the preparation method of the embodiment 1 only in that in the step 3), a rough blank of the dry quenching tank lining plate is heated to 865 ℃ in a vacuum radiation heating mode, the heat preservation time is 25min, after the heat preservation is finished, the rough blank is immersed in water to be cooled to 25 ℃, then the rough blank is heated to 400 ℃ in a vacuum radiation heating mode, the heat preservation time is 12min, and after the heat preservation is finished, the rough blank is cooled to room temperature at a cooling rate of 4 ℃/min to obtain the dry quenching tank lining plate.
Test example 1
The mechanical properties of the dry coke quenching tank liners prepared in the above examples 1 to 3 and comparative examples 1 to 5 were measured, and the results are shown in table 1.
TABLE 1 mechanical Properties of the Lining plate of the Dry Coke quenching tank
| hardness/HRC | Elongation/percent | |
| Example 1 | 68.2 | 34.3 |
| Example 2 | 67.3 | 34.1 |
| Example 3 | 67.8 | 34.0 |
| Comparative example 1 | 65.1 | 32.3 |
| Comparative example 2 | 59.3 | 27.7 |
| Comparative example 3 | / | 28.4 |
| Comparative example 4 | / | 33.1 |
| Comparative example 5 | / | 30.7 |
Test example 2
The high-temperature wear resistance of the dry quenching tank lining plates prepared in the above example 1 and comparative examples 1 to 5 was tested, the test experiments were performed in a roll-slip manner at 1100 ℃ under a nitrogen atmosphere, the dry quenching tank lining plates prepared in the examples 1 and comparative examples 1 to 5 of the present invention were used as test pieces, the specification and dimensions of the test pieces were consistent, the wear load was 50N, the wear cycle was 20min, the weight loss mass was calculated, the weight loss mass = the original mass of the test piece before the test-the mass of the test piece after the test, and the test results are shown in table 2.
TABLE 2 abrasion resistance of dry coke quenching tank liner
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (6)
1. A preparation method of a dry quenching tank lining plate is characterized by comprising the following steps:
1) Weighing the raw materials of the components according to the formula proportion, and smelting to obtain molten steel, wherein the molten steel comprises the following components in percentage by mass: c:0.3-0.4%, cr:24-26%, ni:5-8%, si:1.0-2%, mn:1.0-1.9%, N:0.2-0.3%, re:0.05 to 0.08%, sb:0.01 to 0.03 percent, less than or equal to 0.02 percent of P, less than or equal to 0.02 percent of S, and the balance of Fe and other inevitable impurities;
2) Casting and molding the molten steel to obtain a rough blank of the lining plate of the dry coke quenching tank;
3) Heating the rough blank of the dry quenching tank lining plate to 860-870 ℃ by using a vacuum radiation heating mode, preserving heat for 20-30min, immersing the rough blank into water after heat preservation is finished, cooling to 20-30 ℃, heating the rough blank to 1000-1050 ℃ by using a vacuum radiation heating mode, preserving heat for 10-15min, and cooling to room temperature at a cooling rate of 1-5 ℃/min after heat preservation is finished to obtain the dry quenching tank lining plate.
2. The method for preparing the dry quenching tank lining plate according to claim 1, wherein in the step 3), the rough blank of the dry quenching tank lining plate is heated to 865 ℃ in a vacuum radiation heating mode, the heat preservation time is 25min, after the heat preservation is finished, the rough blank is immersed in water to be cooled to 25 ℃, then the rough blank is heated to 1020 ℃ in a vacuum radiation heating mode, the heat preservation time is 12min, and after the heat preservation is finished, the rough blank is cooled to room temperature at a cooling rate of 4 ℃/min to obtain the dry quenching tank lining plate.
3. The method for preparing the dry quenching tank lining plate according to claim 1 or 2, wherein in the step 1), the molten steel comprises the following components in percentage by mass: c:0.3%, cr:24%, ni:6%, si:1.5%, mn:1.9%, N:0.3%, re:0.06%, sb:0.02%, P:0.012%, S:0.008% and the balance of Fe and other inevitable impurities.
4. The method for preparing the lining plate of the dry coke quenching tank according to claim 1, wherein the raw materials of the components are weighed according to the formula proportion in the step 1), then the iron ingot is added into a medium-frequency electric furnace for smelting, and after the iron ingot is melted, carbon particles, chromium-nitrogen alloy, nickel iron, ferromanganese, ferrosilicon, metallic antimony and rhenium are sequentially added for smelting to obtain the molten steel.
5. The method for preparing the dry quenching tank lining plate according to claim 1, wherein the molten steel is poured into a forming mold through a pouring device in the step 2) for cooling and forming, so that a dry quenching tank lining plate rough blank is obtained.
6. Use of a dry quenching tank liner prepared by the preparation method according to any one of claims 1 to 5 in a quenching car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110791925.2A CN113549829B (en) | 2021-07-13 | 2021-07-13 | Dry coke quenching tank lining plate and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110791925.2A CN113549829B (en) | 2021-07-13 | 2021-07-13 | Dry coke quenching tank lining plate and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN113549829A CN113549829A (en) | 2021-10-26 |
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