CN111996433A - Chromium-molybdenum alloy steel lining plate and production process thereof - Google Patents
Chromium-molybdenum alloy steel lining plate and production process thereof Download PDFInfo
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- CN111996433A CN111996433A CN202010647345.1A CN202010647345A CN111996433A CN 111996433 A CN111996433 A CN 111996433A CN 202010647345 A CN202010647345 A CN 202010647345A CN 111996433 A CN111996433 A CN 111996433A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/22—Lining for containers
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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- 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
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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
- C22C38/002—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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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- 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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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- 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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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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
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- 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
- C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
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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
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
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Abstract
The invention relates to the technical field of lining plates and discloses a chromium-molybdenum alloy steel lining plate, which comprises the following chemical components, by weight, 8-12 parts of carbon, 4-8 parts of silicon, 6-12 parts of manganese, 8-10 parts of chromium, 2-6 parts of molybdenum, 6-10 parts of vanadium, 1-2 parts of titanium, 2-4 parts of bismuth, 1-3 parts of antimony, 3-6 parts of rhenium, 2-5 parts of niobium, 2-6 parts of phosphorus, 1-3 parts of sulfur, 30-100 parts of iron and 2-4 parts of aluminum, and the chromium-molybdenum alloy steel lining plate and a production process thereof can form stable island-shaped and granular high-hardness alloy carbides and the like which are dispersedly distributed after alloy elements are added, austenite grain growth is greatly hindered, hard particles of the carbides are dispersedly distributed in an austenite structure, so that the processing hardening capacity and the hardening effect of the steel lining plate are improved, after alloy elements are properly added into the lining plate material, crystal grains can be refined, and martensite and high-hardness carbide are generated after quenching and tempering treatment, so that the lining plate has excellent performance.
Description
Technical Field
The invention relates to the technical field of lining plates, in particular to a chromium-molybdenum alloy steel lining plate and a production process thereof.
Background
In the industries of ore processing, thermal power generation and the like, a ball mill is generally used for crushing materials, but the lining plate of the ball mill is complicated in stress and short in service life. For a long time, the domestic ball mill mainly uses a high manganese steel lining plate, the foreign lining plate mostly adopts low alloy or high alloy wear-resistant steel series, and the part adopts alloyed high manganese steel, nickel hard cast iron, high chromium cast iron and other materials. Therefore, the research on the novel wear-resistant material and the application technology has important social and economic significance for domestic production, energy conservation and consumption reduction, and improvement of ore crushing and grinding efficiency and market competitiveness. The service environment of the lining plate of the ball mill is complex, the abrasion mechanism is different, and the material performance is designed according to the actual working condition of the material and service. Because the ball mill lining plate is applied to occasions with certain impact action, the sufficient toughness is the premise of selecting the material of the ball mill lining plate.
The lining plate is used for protecting the barrel body, so that the barrel body is prevented from being directly impacted and abraded by a grinding body and materials, meanwhile, the motion state of the grinding body can be adjusted by utilizing the lining plates in different forms, so that the grinding action performance of the grinding body on the materials is enhanced, the existing alloy steel lining plate is easy to wear, the existing wear-resistant alloy steel lining plate is difficult to machine during production and processing, and the production cost is high, so that the chromium-molybdenum alloy steel lining plate and the production process thereof are provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the chromium-molybdenum alloy steel lining plate and the production process thereof, which have the advantages of high wear resistance, good hardness and the like, and solve the problem that the currently used alloy steel lining plate is easy to wear.
(II) technical scheme
The invention provides the following technical scheme: the chromium-molybdenum alloy steel lining plate comprises, by weight, 8-12 parts of carbon, 4-8 parts of silicon, 6-12 parts of manganese, 8-10 parts of chromium, 2-6 parts of molybdenum, 6-10 parts of vanadium, 1-2 parts of titanium, 2-4 parts of bismuth, 1-3 parts of antimony, 3-6 parts of rhenium, 2-5 parts of niobium, 2-6 parts of phosphorus, 1-3 parts of sulfur, 30-100 parts of iron and 2-4 parts of aluminum.
Preferably, the materials are all clean materials without soil and oxide scales.
A production process of a chromium-molybdenum alloy steel lining plate comprises the following steps:
s1, putting raw materials except aluminum such as carbon, silicon, manganese, chromium, molybdenum and the like into a smelting furnace for smelting, adding aluminum for deoxidation and discharging after the temperature of molten steel in the furnace is 1600-1700 ℃,
s2, pouring the smelted molten steel into a mold for casting, wherein the casting temperature is 1460 and 1500 ℃,
s3, taking out the casting after molding, preserving heat for 20-30h,
s4, processing the pouring gate and the root of the pouring gate, cutting and polishing according to the drawing strictly to obtain a steel lining plate,
s5, heating the steel lining plate by using a high temperature furnace, preserving heat for 1-2h when the steel lining plate is heated to 650-,
s6, cooling the steel lining plate to 700 ℃ along with the furnace, discharging the steel lining plate from the furnace, cooling the steel lining plate to room temperature,
s7, repeating the operation of S5 on the steel lining plate, cooling the oil on the steel lining plate to 150-,
and S8, inspecting the obtained steel lining plate according to a drawing to obtain the chromium-molybdenum alloy steel lining plate.
Preferably, after tapping in S2, adding covering sand, calming for 5-8min, then pouring, and after pouring, performing secondary pouring.
Preferably, in the step S3, sand removal is performed when the temperature of the casting after molding is allowable.
Preferably, the steel lining plate is not optionally knocked during heat treatment.
Preferably, the steel lining plate with larger deformation or cracks after the heat treatment in S8 is discarded.
Preferably, the steel lining plate in S7 is not in contact with water.
Compared with the prior art, the invention provides a chromium-molybdenum alloy steel lining plate and a production process thereof, and the chromium-molybdenum alloy steel lining plate has the following beneficial effects:
1. the chromium-molybdenum alloy steel lining plate and the production process thereof can form stable island-shaped and granular high-hardness alloy carbides and the like which are dispersed and distributed through adding alloy elements, the austenite crystal grain growth is greatly hindered, hard carbide particles are dispersed and distributed in an austenite structure, so that the work hardening capacity and the hardening effect of the steel lining plate are improved, the lining plate material can refine crystal grains after properly adding the alloy elements, martensite and high-hardness carbides are generated after quenching and tempering treatment, the performance of the lining plate is excellent, and the structure obtained through heat treatment is mainly bainite and contains martensite and retained austenite, so that the lining plate has the advantages of high hardness, high toughness, impact resistance, fatigue deformation resistance and good wear resistance, and is safe to use, high in reliability and obvious in economic benefit and social benefit.
Detailed Description
The first embodiment is as follows:
the chromium-molybdenum alloy steel lining plate comprises the following chemical components, by weight, 8 parts of carbon, 4 parts of silicon, 6 parts of manganese, 8 parts of chromium, 2 parts of molybdenum, 6 parts of vanadium, 1 part of titanium, 2 parts of bismuth, 1 part of antimony, 3 parts of rhenium, 2 parts of niobium, 2 parts of phosphorus, 1 part of sulfur, 30 parts of iron and 2 parts of aluminum, wherein the materials are clean materials without soil and oxide skin.
A production process of a chromium-molybdenum alloy steel lining plate comprises the following steps:
and S1, putting raw materials except aluminum, such as carbon, silicon, manganese, chromium, molybdenum and the like, into a smelting furnace for smelting, and adding aluminum for deoxidation and discharging after the temperature of molten steel in the furnace is 1600 ℃.
And S2, pouring the smelted molten steel into a mold for casting, wherein the casting temperature is 1460 ℃, adding covering sand after tapping, calming for 5min, then casting, and performing casting again after casting.
And S3, taking out the casting after molding, preserving heat for 20 hours, and cleaning sand when the temperature of the casting is allowed after molding.
And S4, processing the pouring gate of the injection piece and the root part of the pouring gate, and cutting and polishing the injection piece strictly according to the drawing to obtain the steel lining plate.
And S5, heating the steel lining plate by using a high-temperature furnace, preserving heat for 1h when the steel lining plate is heated to 650 ℃, and preserving heat for 2h when the steel lining plate is heated to 900 ℃, wherein the steel lining plate is not knocked randomly.
And S6, cooling the steel lining plate to 700 ℃ along with the furnace, discharging the steel lining plate from the furnace and cooling the steel lining plate to room temperature.
And S7, repeating the operation of S5 on the steel lining plate, cooling the oil on the steel lining plate to 150 ℃, preserving the heat for 1h, and naturally cooling to room temperature, wherein the steel lining plate is not in contact with water.
And S8, inspecting the obtained steel lining plate according to a drawing to obtain the chromium-molybdenum alloy steel lining plate, and scrapping the steel lining plate which is deformed greatly or has cracks after heat treatment.
Example two:
the chromium-molybdenum alloy steel lining plate comprises the following chemical components, by weight, 9 parts of carbon, 5 parts of silicon, 7 parts of manganese, 8 parts of chromium, 3 parts of molybdenum, 7 parts of vanadium, 1 part of titanium, 2 parts of bismuth, 1 part of antimony, 3 parts of rhenium, 2 parts of niobium, 3 parts of phosphorus, 2 parts of sulfur, 40 parts of iron and 2 parts of aluminum, wherein the materials are clean materials without soil and oxide skin.
A production process of a chromium-molybdenum alloy steel lining plate comprises the following steps:
and S1, putting raw materials except aluminum, such as carbon, silicon, manganese, chromium, molybdenum and the like, into a smelting furnace for smelting, and adding aluminum for deoxidation and discharging after the temperature of molten steel in the furnace is 1650 ℃.
And S2, pouring the smelted molten steel into a mold for casting, wherein the casting temperature is 1470 ℃, adding covering sand after tapping, calming for 6min, then casting, and performing secondary casting after casting.
And S3, taking out the casting after molding, preserving heat for 22h, and cleaning sand when the temperature of the casting after molding is allowed.
And S4, processing the pouring gate of the injection piece and the root part of the pouring gate, and cutting and polishing the injection piece strictly according to the drawing to obtain the steel lining plate.
And S5, heating the steel lining plate by using a high-temperature furnace, preserving heat for 1.2h when the steel lining plate is heated to 660 ℃, preserving heat for 2.2h when the steel lining plate is heated to 910 ℃, and not beating the steel lining plate randomly when the steel lining plate is subjected to heat treatment.
And S6, cooling the steel lining plate to 700 ℃ along with the furnace, discharging the steel lining plate from the furnace and cooling the steel lining plate to room temperature.
And S7, repeating the operation of S5 on the steel lining plate, cooling the oil on the steel lining plate to 160 ℃, preserving the heat for 1.2h, and naturally cooling to the room temperature, wherein the steel lining plate is not in contact with water.
And S8, inspecting the obtained steel lining plate according to a drawing to obtain the chromium-molybdenum alloy steel lining plate, and scrapping the steel lining plate which is deformed greatly or has cracks after heat treatment.
Example three:
the chromium-molybdenum alloy steel lining plate comprises the following chemical components, by weight, 10 parts of carbon, 6 parts of silicon, 8 parts of manganese, 9 parts of chromium, 4 parts of molybdenum, 8 parts of vanadium, 2 parts of titanium, 3 parts of bismuth, 2 parts of antimony, 5 parts of rhenium, 4 parts of niobium, 4 parts of phosphorus, 5 parts of sulfur, 60 parts of iron and 3 parts of aluminum, wherein the materials are clean materials without soil and oxide skin.
A production process of a chromium-molybdenum alloy steel lining plate comprises the following steps:
and S1, putting raw materials except aluminum, such as carbon, silicon, manganese, chromium, molybdenum and the like, into a smelting furnace for smelting, and adding aluminum for deoxidation and discharging after the temperature of molten steel in the furnace is 1680 ℃.
And S2, pouring the smelted molten steel into a mold for casting, wherein the casting temperature is 1480 ℃, adding covering sand after tapping, calming for 7min, then casting, and performing casting again after casting.
And S3, taking out the casting after molding, keeping the temperature for 26h, and cleaning sand when the temperature is allowed after the casting is molded.
And S4, processing the pouring gate of the injection piece and the root part of the pouring gate, and cutting and polishing the injection piece strictly according to the drawing to obtain the steel lining plate.
And S5, heating the steel lining plate by using a high-temperature furnace, preserving heat for 1.5 hours when the steel lining plate is heated to 670 ℃, preserving heat for 2.5 hours when the steel lining plate is heated to 912 ℃, and not beating the steel lining plate randomly when the steel lining plate is heat treated.
And S6, cooling the steel lining plate to 700 ℃ along with the furnace, discharging the steel lining plate from the furnace and cooling the steel lining plate to room temperature.
And S7, repeating the operation of S5 on the steel lining plate, cooling the oil on the steel lining plate to 180 ℃, preserving the heat for 1.6h, and naturally cooling to the room temperature, wherein the steel lining plate is not in contact with water.
And S8, inspecting the obtained steel lining plate according to a drawing to obtain the chromium-molybdenum alloy steel lining plate, and scrapping the steel lining plate which is deformed greatly or has cracks after heat treatment.
Example four:
the chromium-molybdenum alloy steel lining plate comprises the following chemical components, by weight, 10 parts of carbon, 7 parts of silicon, 10 parts of manganese, 9 parts of chromium, 5 parts of molybdenum, 8 parts of vanadium, 2 parts of titanium, 3 parts of bismuth, 2 parts of antimony, 5 parts of rhenium, 4 parts of niobium, 5 parts of phosphorus, 3 parts of sulfur, 80 parts of iron and 3 parts of aluminum, wherein the materials are clean materials without soil and oxide skin.
A production process of a chromium-molybdenum alloy steel lining plate comprises the following steps:
and S1, putting raw materials except aluminum, such as carbon, silicon, manganese, chromium, molybdenum and the like, into a smelting furnace for smelting, and adding aluminum for deoxidation and discharging after the temperature of molten steel in the furnace is 1690 ℃.
And S2, pouring the smelted molten steel into a mold for casting, wherein the casting temperature is 1490 ℃, adding covering sand after tapping, calming for 7min, then casting, and performing secondary casting once after casting.
And S3, taking out the casting after molding, keeping the temperature for 28h, and cleaning sand when the temperature is allowed after the casting is molded.
And S4, processing the pouring gate of the injection piece and the root part of the pouring gate, and cutting and polishing the injection piece strictly according to the drawing to obtain the steel lining plate.
And S5, heating the steel lining plate by using a high-temperature furnace, preserving heat for 1-2h when the steel lining plate is heated to 670 ℃, preserving heat for 2.8h when the steel lining plate is heated to 920 ℃, and not beating the steel lining plate randomly when the steel lining plate is heat treated.
And S6, cooling the steel lining plate to 700 ℃ along with the furnace, discharging the steel lining plate from the furnace and cooling the steel lining plate to room temperature.
And S7, repeating the operation of S5 on the steel lining plate, cooling the oil on the steel lining plate to 180 ℃, preserving the heat for 1.8h, and naturally cooling to the room temperature, wherein the steel lining plate is not in contact with water.
And S8, inspecting the obtained steel lining plate according to a drawing to obtain the chromium-molybdenum alloy steel lining plate, and scrapping the steel lining plate which is deformed greatly or has cracks after heat treatment.
Example five:
the chromium-molybdenum alloy steel lining plate comprises the following chemical components, by weight, 12 parts of carbon, 8 parts of silicon, 12 parts of manganese, 10 parts of chromium, 6 parts of molybdenum, 10 parts of vanadium, 2 parts of titanium, 4 parts of bismuth, 3 parts of antimony, 6 parts of rhenium, 5 parts of niobium, 6 parts of phosphorus, 3 parts of sulfur, 100 parts of iron and 4 parts of aluminum, wherein the materials are clean materials without soil and oxide skin.
A production process of a chromium-molybdenum alloy steel lining plate comprises the following steps:
and S1, putting raw materials except aluminum, such as carbon, silicon, manganese, chromium, molybdenum and the like, into a smelting furnace for smelting, and adding aluminum for deoxidation and discharging after the temperature of molten steel in the furnace is 1700 ℃.
And S2, pouring the smelted molten steel into a mold for casting, wherein the casting temperature is 1500 ℃, adding covering sand after tapping, calming for 8min, then casting, and performing secondary casting once after casting.
And S3, taking out the casting after molding, preserving heat for 30h, and performing sand removal when the temperature of the casting after molding is allowed.
And S4, processing the pouring gate of the injection piece and the root part of the pouring gate, and cutting and polishing the injection piece strictly according to the drawing to obtain the steel lining plate.
And S5, heating the steel lining plate by using a high-temperature furnace, preserving heat for 2 hours when the steel lining plate is heated to 680 ℃, and preserving heat for 3 hours when the steel lining plate is heated to 920 ℃, wherein the steel lining plate is not knocked randomly.
And S6, cooling the steel lining plate to 700 ℃ along with the furnace, discharging the steel lining plate from the furnace and cooling the steel lining plate to room temperature.
And S7, repeating the operation of S5 on the steel lining plate, cooling the oil on the steel lining plate to 200 ℃, preserving the heat for 2 hours, and naturally cooling to room temperature, wherein the steel lining plate is not in contact with water.
And S8, inspecting the obtained steel lining plate according to a drawing to obtain the chromium-molybdenum alloy steel lining plate, and scrapping the steel lining plate which is deformed greatly or has cracks after heat treatment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The chromium-molybdenum alloy steel lining plate is characterized by comprising the following chemical components, by weight, 8-12 parts of carbon, 4-8 parts of silicon, 6-12 parts of manganese, 8-10 parts of chromium, 2-6 parts of molybdenum, 6-10 parts of vanadium, 1-2 parts of titanium, 2-4 parts of bismuth, 1-3 parts of antimony, 3-6 parts of rhenium, 2-5 parts of niobium, 2-6 parts of phosphorus, 1-3 parts of sulfur, 30-100 parts of iron and 2-4 parts of aluminum.
2. A chromium molybdenum alloy steel liner plate according to claim 1, wherein: the materials are all clean materials without soil and oxide skin.
3. The production process of the chromium-molybdenum alloy steel lining plate is characterized by comprising the following steps of:
s1, putting raw materials except aluminum, such as carbon, silicon, manganese, chromium, molybdenum and the like, into a smelting furnace for smelting, and adding aluminum for deoxidation and discharging after the temperature of molten steel in the furnace is 1600-;
s2, pouring the smelted molten steel into a mold for casting, wherein the casting temperature is 1460-1500 ℃;
s3, taking out the casting after molding, and preserving heat for 20-30 h;
s4, processing the pouring gate and the root of the pouring gate, and cutting and polishing the pouring gate and the root strictly according to the drawing to obtain a steel lining plate;
s5, heating the steel lining plate by using a high-temperature furnace, preserving heat for 1-2h when the steel lining plate is heated to 650-;
s6, cooling the steel lining plate to 700 ℃ along with the furnace, discharging the steel lining plate from the furnace and cooling the steel lining plate to room temperature;
s7, repeating the operation of S5 on the steel lining plate, cooling the oil on the steel lining plate to 150-;
and S8, inspecting the obtained steel lining plate according to a drawing to obtain the chromium-molybdenum alloy steel lining plate.
4. The chromium molybdenum alloy steel liner plate production process according to claim 3, characterized in that: and after tapping in the S2, adding covering sand, calming for 5-8min, then pouring, and performing secondary pouring after pouring.
5. The chromium molybdenum alloy steel liner plate production process according to claim 3, characterized in that: and in the S3, sand removal is carried out when the temperature of the casting after molding is allowed.
6. The chromium molybdenum alloy steel liner plate production process according to claim 3, characterized in that: the steel lining plate is not optionally knocked during heat treatment.
7. The chromium molybdenum alloy steel liner plate production process according to claim 3, characterized in that: and the steel lining plate which has larger deformation or cracks after heat treatment in the S8 is scrapped.
8. The chromium molybdenum alloy steel liner plate production process according to claim 3, characterized in that: the steel liner plate in the S7 is not in contact with water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010647345.1A CN111996433A (en) | 2020-07-07 | 2020-07-07 | Chromium-molybdenum alloy steel lining plate and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010647345.1A CN111996433A (en) | 2020-07-07 | 2020-07-07 | Chromium-molybdenum alloy steel lining plate and production process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113046656A (en) * | 2021-03-09 | 2021-06-29 | 云南昆钢耐磨材料科技股份有限公司 | Wear-resistant lining plate and preparation method thereof |
| CN113549829A (en) * | 2021-07-13 | 2021-10-26 | 山西滨腾机械有限公司 | Dry coke quenching tank lining plate and preparation method and application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113046656A (en) * | 2021-03-09 | 2021-06-29 | 云南昆钢耐磨材料科技股份有限公司 | Wear-resistant lining plate and preparation method thereof |
| CN113549829A (en) * | 2021-07-13 | 2021-10-26 | 山西滨腾机械有限公司 | Dry coke quenching tank lining plate and preparation method and application thereof |
| CN113549829B (en) * | 2021-07-13 | 2022-12-20 | 山西滨腾机械有限公司 | Dry coke quenching tank lining plate and preparation method and application thereof |
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