CN114855091A - High-toughness wear-resistant composite board and preparation method thereof - Google Patents

High-toughness wear-resistant composite board and preparation method thereof Download PDF

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Publication number
CN114855091A
CN114855091A CN202210596717.1A CN202210596717A CN114855091A CN 114855091 A CN114855091 A CN 114855091A CN 202210596717 A CN202210596717 A CN 202210596717A CN 114855091 A CN114855091 A CN 114855091A
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percent
temperature
resistant composite
composite board
rolling
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张军
赵有恒
邓航海
李昆
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Jiangsu Wodun Wear Resistant New Material Co ltd
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Jiangsu Wodun Wear Resistant New Material Co ltd
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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
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • 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
    • 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
    • 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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention discloses a high-toughness wear-resistant composite board, and particularly relates to the technical field of composite boards, wherein the composite board comprises the following elements in percentage by weight: carbon, silicon, nickel, phosphorus, titanium, chromium, vanadium, aluminum, lanthanum, tungsten, molybdenum, and the balance of iron and unavoidable impurities. The composite board produced by the invention has higher toughness and wear resistance, and higher high-temperature creep rupture strength, the addition of rare earth elements can change the property, form and distribution of impurities in the composite board, so that crystal grains in the composite board can be refined, the crystal grains are uniformly distributed, the fatigue strength of the composite board is favorably improved, the capacity of resisting the formation and the expansion of cracks of the impurities and crystal boundaries is increased, the embrittlement tendency of iron-chromium-aluminum during high-temperature use can be eliminated, the high-temperature creep rupture strength of the composite board is improved, tungsten can be used for refining the crystal grains of the composite board, and the stability, the hot hardness and the hot strength of steel during tempering are improved.

Description

High-toughness wear-resistant composite board and preparation method thereof
Technical Field
The invention relates to the technical field of composite plates, in particular to a high-toughness wear-resistant composite plate and a preparation method thereof.
Background
With the development of modern science and technology, various new technologies and new processes are emerging continuously, in practice, people also continuously put forward new or higher requirements on the performance of materials, so that composite boards come along with the move, the composite boards are generally divided into metal composite boards, wood composite boards, color steel composite boards and rock wool composite boards, in many occasions, the double requirements of an engineering structure on the usability and the cost are difficult to meet by adopting a single metal material, the metal composite boards take metal as a base material, take materials with different physical and chemical properties as a composite material, and utilize a composite technology to combine the materials to form a novel composite board, so that the novel composite board has the advantages of higher specific tension, specific rigidity, specific strength and the like compared with the traditional metal materials.
With the rapid development of economic prop industries such as metallurgy, chemical engineering and the like, the requirements of mining machinery, coal mining and transportation, petrochemical industry, building material decoration, ship engineering and the like on wear-resistant and corrosion-resistant composite boards are multiplied, and the wear-resistant and corrosion-resistant composite boards comprise tracks for the mining machinery, coal preparation machinery for coal, petroleum and natural gas conveying pipelines, ship bodies, structural members and the like. However, due to the defects of material selection and the like of the existing metal composite plate, the wear resistance and toughness of the composite steel plate are poor, and the requirement of applying the composite steel plate to a scene where friction often occurs is difficult to meet.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a high-toughness wear-resistant composite plate and a preparation method thereof, and the problems to be solved by the present invention are: how to improve the wear resistance and the toughness of the composite steel plate and meet the use requirements of people.
In order to achieve the purpose, the invention provides the following technical scheme: a high-toughness wear-resistant composite plate comprises the following elements in percentage by weight: 0.03 to 0.09 percent of carbon, 0.05 to 0.2 percent of silicon, 0.05 to 0.15 percent of nickel, 0.005 to 0.025 percent of phosphorus, 0.005 to 0.015 percent of titanium, 0.5 to 1.5 percent of chromium, 0.05 to 0.15 percent of vanadium, 0.01 to 0.05 percent of aluminum, 0.05 to 0.15 percent of lanthanum, 0.1 to 0.2 percent of tungsten, 0.1 to 0.3 percent of molybdenum, and the balance of iron and inevitable impurities.
In a preferred embodiment, the following elements are included in weight percent: 0.05 to 0.07 percent of carbon, 0.01 to 0.15 percent of silicon, 0.08 to 0.12 percent of nickel, 0.01 to 0.02 percent of phosphorus, 0.008 to 0.012 percent of titanium, 0.8 to 1.2 percent of chromium, 0.08 to 0.12 percent of vanadium, 0.02 to 0.04 percent of aluminum, 0.08 to 0.12 percent of lanthanum, 0.13 to 0.17 percent of tungsten, 0.15 to 0.25 percent of molybdenum, and the balance of iron and inevitable impurities.
In a preferred embodiment, the following elements are included in weight percent: 0.06% of carbon, 0.125% of silicon, 0.1% of nickel, 0.015% of phosphorus, 0.01% of titanium, 1% of chromium, 0.1% of vanadium, 0.3% of aluminum, 0.1% of lanthanum, 0.15% of tungsten, 0.2% of molybdenum, and the balance of iron and inevitable impurities.
In a preferred embodiment, the high toughness wear resistant composite plate has a thickness of 50 to 60mm, and the content of the inevitable impurities is less than 0.005%.
The invention also provides a preparation method of the high-toughness wear-resistant composite plate, which comprises the following specific preparation steps:
the method comprises the following steps: weighing the raw materials according to the weight percentage, uniformly mixing the weighed raw materials, putting the mixture into a ball mill for ball milling, putting the mixture into a smelting furnace for primary smelting after the ball milling is finished, and obtaining smelting molten steel after the primary smelting is finished;
step two: introducing the molten steel obtained by the primary smelting in the step one into a refining furnace for refining under the action of inert gas, wherein the temperature in the refining furnace is 1450-;
step three: injecting the refined material in the step two into a mold for vacuum degassing casting, obtaining a steel billet or steel ingot after casting, performing reheating treatment on the obtained steel billet or steel ingot, heating the steel billet or steel ingot to 1050-;
step four: rolling the reheated steel billet or steel ingot in the third step, wherein the steel billet or steel ingot is firstly subjected to primary rolling when being rolled, the temperature during the primary rolling is 1150-plus 1180, the number of effective rolling passes is 3-7, and the finish rolling is carried out after the primary rolling is finished, wherein the temperature during the finish rolling is 950-plus 1000 ℃, and the number of effective rolling passes is 2-6;
step five: cooling and tempering the steel billet or steel ingot rolled in the fourth step, and performing air cooling after tempering to obtain a molded composite plate;
step six: and (5) homogenizing the composite board formed in the fifth step in a homogenizing furnace, and then performing aging treatment to obtain the high-toughness wear-resistant composite board.
In a preferred embodiment, the particle size diameter of the raw material after ball milling in the step one is 40-70um, the primary smelting is firstly carried out at 1300-1400 ℃ for 5-8min, then the temperature is increased to 1650-1750 ℃ for 5-8min, and the rate of temperature increase is 20-25 ℃/min.
In a preferred embodiment, the casting step in the third step is continuous casting or die casting, the moving speed of the cast billet or steel ingot in the reheating treatment is 15-20 cm/min, and the product obtained after the reheating treatment in the third step is subjected to descaling treatment at the temperature of 980-1020 ℃ for 3-5 h.
In a preferred embodiment, the total reduction of rolling in step four is 70 to 80%.
In a preferred embodiment, the cooling in the step five is water cooling, the cooling speed is 30-50 ℃/s, the tempering temperature is 600-650 ℃, and the tempering time is 20-30 min.
In a preferred embodiment, the temperature of the homogenization treatment in the sixth step is 600-700 ℃, the time of the homogenization treatment is 2-4h, the temperature of the aging treatment is 260-300 ℃, the treatment time is 12-15h, and the air cooling is performed to the room temperature after the aging treatment.
The invention has the technical effects and advantages that:
1. the high-toughness wear-resistant composite board prepared by adopting the raw material formula of the invention is added with titanium, chromium, vanadium, lanthanum, tungsten, nickel and molybdenum, the titanium and the carbon have strong bonding force and higher stability, TiC particles formed by the titanium and the carbon can prevent steel plate grains from growing and coarsening, the chromium can increase the strength of the composite board, so that the composite board has good wear resistance and corrosion resistance, the vanadium can purify and deteriorate and refine the grains, the wear resistance and the strength of the composite board can be improved, the lanthanum is a rare earth element, the property, the shape and the distribution of impurities in the composite board can be changed, the grains in the composite board can be refined, the grains are uniformly distributed, the fatigue strength of the composite board is improved, the capability of resisting crack formation and expansion of the impurities and grain boundaries is improved, and the embrittlement tendency of iron-chromium-aluminum in high temperature use can be eliminated, the high-temperature creep rupture strength of the composite plate is improved, tungsten can be used for grain refinement of the composite plate, the stability, the hot hardness and the hot strength of steel during tempering are improved, the wear resistance and the machinability of the composite plate can be obviously improved by simultaneously using the tungsten, silicon, aluminum, molybdenum, vanadium, chromium and nickel, the nickel is a solid solution enhancer and a better hardenability additive in the composite plate, the low-temperature performance of the steel can be effectively improved, the molybdenum can be used for grain refinement in alloy steel, the hardenability and the hot strength are improved, and sufficient strength and creep resistance can be kept at high temperature;
2. the composite board is processed by primary smelting, refining, casting, reheating, descaling, primary rolling, finish rolling, cooling, tempering and aging treatment on the raw materials, so that the processing effect on the composite board is good, and the yield and the production efficiency are greatly improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a high-toughness wear-resistant composite plate which comprises the following elements in percentage by weight: 0.03% of carbon, 0.05% of silicon, 0.05% of nickel, 0.005% of phosphorus, 0.005% of titanium, 0.5% of chromium, 0.05% of vanadium, 0.01% of aluminum, 0.05% of lanthanum, 0.1% of tungsten, 0.1% of molybdenum, and the balance of iron and inevitable impurities.
In a preferred embodiment, the high toughness wear resistant composite plate has a thickness of 60mm, and the content of the inevitable impurities is less than 0.005%.
The invention also provides a preparation method of the high-toughness wear-resistant composite plate, which comprises the following specific preparation steps:
the method comprises the following steps: weighing the raw materials according to the weight percentage, uniformly mixing the weighed raw materials, putting the mixture into a ball mill for ball milling, putting the mixture into a smelting furnace for primary smelting after the ball milling is finished, and obtaining smelting molten steel after the primary smelting is finished;
step two: introducing the molten steel obtained by the primary smelting in the step one into a refining furnace for refining under the action of inert gas, wherein the temperature in the refining furnace is 1550 ℃, and the refining time in the refining furnace is 20 min;
step three: injecting the refined material in the step two into a mold for vacuum degassing casting, obtaining a steel billet or steel ingot after casting, performing reheating treatment on the obtained steel billet or steel ingot, heating the steel billet or steel ingot to 1100 ℃, and preserving heat for 5.5 hours;
step four: rolling the reheated steel billet or ingot in the third step, wherein the steel billet or ingot is firstly subjected to initial rolling at the temperature of 1160 during initial rolling, the number of effective rolling passes is 5, the steel billet or ingot is subjected to finish rolling after the initial rolling is finished, the temperature during finish rolling is 980 ℃, and the number of effective rolling passes is 4;
step five: cooling and tempering the steel billet or steel ingot rolled in the fourth step, and performing air cooling after tempering to obtain a molded composite plate;
step six: and (5) homogenizing the composite board formed in the fifth step in a homogenizing furnace, and then performing aging treatment to obtain the high-toughness wear-resistant composite board.
In a preferred embodiment, the particle size diameter of the raw material after ball milling in the first step is 60um, during the preliminary smelting, smelting is performed for 7min at 1350 ℃, then smelting is performed for 7min at 1700 ℃, and the temperature rising rate is 22 ℃/min.
In a preferred embodiment, the casting step in the third step is continuous casting or die casting, the moving speed of the cast billet or ingot in the reheating treatment is 18 cm/min, and the product obtained after the reheating treatment in the third step is subjected to descaling treatment at the temperature of 1000 ℃ for 4 h.
In a preferred embodiment, the total reduction in rolling in step four is 75%.
In a preferred embodiment, the cooling in the fifth step is water cooling, the cooling speed is 40 ℃/s, the tempering temperature is 630 ℃, and the tempering time is 25 min.
In a preferred embodiment, the temperature for the homogenization treatment in the sixth step is 650 ℃, the time for the homogenization treatment is 3 hours, the temperature for the aging treatment is 280 ℃, the time for the treatment is 13 hours, and the air cooling is performed after the aging treatment to room temperature.
Example 2:
unlike example 1, the high toughness, wear resistant composite panel includes the following elements in weight percent: 0.06% of carbon, 0.125% of silicon, 0.1% of nickel, 0.015% of phosphorus, 0.01% of titanium, 1% of chromium, 0.1% of vanadium, 0.3% of aluminum, 0.1% of lanthanum, 0.15% of tungsten, 0.2% of molybdenum, and the balance of iron and inevitable impurities.
Example 3:
unlike examples 1-2, the high toughness, wear resistant composite panels include the following elements in weight percent: 0.09% of carbon, 0.2% of silicon, 0.15% of nickel, 0.025% of phosphorus, 0.015% of titanium, 1.5% of chromium, 0.15% of vanadium, 0.05% of aluminum, 0.15% of lanthanum, 0.2% of tungsten, 0.3% of molybdenum, and the balance of iron and inevitable impurities.
Example 4:
a high-toughness wear-resistant composite plate comprises the following elements in percentage by weight: 0.03% of carbon, 0.05% of silicon, 0.05% of nickel, 0.005% of phosphorus, 0.005% of titanium, 0.5% of chromium, 0.05% of vanadium, 0.01% of aluminum, 0.05% of lanthanum, 0.1% of molybdenum, and the balance of iron and unavoidable impurities.
In a preferred embodiment, the high toughness wear resistant composite plate has a thickness of 60mm, and the content of the inevitable impurities is less than 0.005%.
The invention also provides a preparation method of the high-toughness wear-resistant composite plate, which comprises the following specific preparation steps:
the method comprises the following steps: weighing the raw materials according to the weight percentage, uniformly mixing the weighed raw materials, putting the mixture into a ball mill for ball milling, putting the mixture into a smelting furnace for primary smelting after the ball milling is finished, and obtaining smelting molten steel after the primary smelting is finished;
step two: introducing the molten steel obtained by the primary smelting in the step one into a refining furnace for refining under the action of inert gas, wherein the temperature in the refining furnace is 1550 ℃, and the refining time in the refining furnace is 20 min;
step three: injecting the refined material in the step two into a mold for vacuum degassing casting, obtaining a steel billet or steel ingot after casting, performing reheating treatment on the obtained steel billet or steel ingot, heating the steel billet or steel ingot to 1100 ℃, and preserving heat for 5.5 hours;
step four: rolling the reheated steel billet or ingot in the third step, wherein the steel billet or ingot is firstly subjected to initial rolling at the temperature of 1160 during initial rolling, the number of effective rolling passes is 5, the steel billet or ingot is subjected to finish rolling after the initial rolling is finished, the temperature during finish rolling is 980 ℃, and the number of effective rolling passes is 4;
step five: cooling and tempering the steel billet or steel ingot rolled in the fourth step, and performing air cooling after tempering to obtain a molded composite plate;
step six: and (5) homogenizing the composite board formed in the fifth step in a homogenizing furnace, and then performing aging treatment to obtain the high-toughness wear-resistant composite board.
In a preferred embodiment, the particle size diameter of the raw material after ball milling in the first step is 60um, during the preliminary smelting, smelting is performed for 7min at 1350 ℃, then smelting is performed for 7min at 1700 ℃, and the temperature rising rate is 22 ℃/min.
In a preferred embodiment, the casting step in the third step is continuous casting or die casting, the moving speed of the cast billet or ingot in the reheating treatment is 18 cm/min, and the product obtained after the reheating treatment in the third step is subjected to descaling treatment at the temperature of 1000 ℃ for 4 h.
In a preferred embodiment, the total reduction in rolling in step four is 75%.
In a preferred embodiment, the cooling in the fifth step is water cooling, the cooling speed is 40 ℃/s, the tempering temperature is 630 ℃, and the tempering time is 25 min.
In a preferred embodiment, the temperature for the homogenization treatment in the sixth step is 650 ℃, the time for the homogenization treatment is 3 hours, the temperature for the aging treatment is 280 ℃, the time for the treatment is 13 hours, and the air cooling is performed after the aging treatment to room temperature.
Example 5:
a high-toughness wear-resistant composite plate comprises the following elements in percentage by weight: 0.03% of carbon, 0.05% of silicon, 0.05% of nickel, 0.005% of phosphorus, 0.005% of titanium, 0.5% of chromium, 0.05% of vanadium, 0.01% of aluminum, 0.05% of lanthanum, 0.1% of tungsten, 0.1% of molybdenum, and the balance of iron and inevitable impurities.
In a preferred embodiment, the high toughness wear resistant composite plate has a thickness of 60mm, and the content of the inevitable impurities is less than 0.005%.
The invention also provides a preparation method of the high-toughness wear-resistant composite plate, which comprises the following specific preparation steps:
the method comprises the following steps: weighing the raw materials according to the weight percentage, uniformly mixing the weighed raw materials, putting the mixture into a ball mill for ball milling, putting the mixture into a smelting furnace for primary smelting after the ball milling is finished, and obtaining smelting molten steel after the primary smelting is finished;
step two: introducing the molten steel obtained by the primary smelting in the step one into a refining furnace for refining under the action of inert gas, wherein the temperature in the refining furnace is 1550 ℃, and the refining time in the refining furnace is 20 min;
step three: injecting the refined material in the step two into a mold for vacuum degassing casting, obtaining a steel billet or steel ingot after casting, performing reheating treatment on the obtained steel billet or steel ingot, heating the steel billet or steel ingot to 1100 ℃, and preserving heat for 5.5 hours;
step four: rolling the reheated steel billet or ingot in the third step, wherein the steel billet or ingot is firstly subjected to initial rolling at the temperature of 1160 during initial rolling, the number of effective rolling passes is 5, the steel billet or ingot is subjected to finish rolling after the initial rolling is finished, the temperature during finish rolling is 980 ℃, and the number of effective rolling passes is 4;
step five: and cooling and tempering the steel billet or steel ingot rolled in the fourth step, and performing air cooling after tempering to obtain the formed high-toughness wear-resistant composite plate.
In a preferred embodiment, the particle size diameter of the raw material after ball milling in the first step is 60um, during the preliminary smelting, smelting is performed for 7min at 1350 ℃, then smelting is performed for 7min at 1700 ℃, and the temperature rising rate is 22 ℃/min.
In a preferred embodiment, the casting step in the third step is continuous casting or die casting, the moving speed of the cast billet or ingot in the reheating treatment is 18 cm/min, and the product obtained after the reheating treatment in the third step is subjected to descaling treatment at the temperature of 1000 ℃ for 4 h.
In a preferred embodiment, the total reduction in rolling in step four is 75%.
In a preferred embodiment, the cooling in the fifth step is water cooling, the cooling speed is 40 ℃/s, the tempering temperature is 630 ℃, and the tempering time is 25 min.
In a preferred embodiment, the temperature for the homogenization treatment in the sixth step is 650 ℃, the time for the homogenization treatment is 3 hours, the temperature for the aging treatment is 280 ℃, the time for the treatment is 13 hours, and the air cooling is performed after the aging treatment to room temperature.
The composite boards produced in the above examples 1, 2, 3, 4 and 5 were respectively selected as the experimental group 1, 2, 3, 4 and 5, and the mechanical properties of the selected products were measured by using the conventional steel composite boards as the control group. The measurement results are shown in the table I:
Figure BDA0003668233720000091
watch 1
As can be seen from table one, compared with the conventional steel composite plate, the composite plate produced by the invention has better yield strength, tensile strength, elongation and abrasion resistance than the conventional composite plate, tungsten element is not added in the example 4, the produced composite plate has poorer yield strength, tensile strength, elongation and abrasion resistance than the example 1, the composite plate produced in the example 5 is not subjected to homogenization treatment and aging treatment, and the yield strength, tensile strength, elongation and abrasion resistance are slightly reduced than the example 1, the titanium and carbon are added in the composite plate, the bonding force of the titanium and the carbon is strong, the stability is higher, TiC particles formed by the titanium and the carbon can prevent the grains of the steel plate from coarsening and growing, the chromium can increase the strength of the composite plate, so that the composite plate has good abrasion resistance and corrosion resistance, the vanadium can purify, deteriorate and refine the grains, and the abrasion resistance and strength of the composite plate can be improved, lanthanum is a rare earth element, can change the property, the form and the distribution of inclusions in the composite board, can refine grains in the composite board, can ensure that the grains are uniformly distributed, is favorable for improving the fatigue strength of the composite board, increases the capability of resisting the formation and the expansion of cracks of the inclusions and crystal boundaries, can eliminate the embrittlement tendency of iron-chromium-aluminum when used at high temperature, improves the high-temperature creep rupture strength of the composite board, can refine grains of the composite board, can improve the stability, the hot hardness and the hot strength of steel when tempered, can obviously improve the wear resistance and the machinability of the composite board when used together with tungsten, silicon, aluminum, molybdenum, vanadium, chromium and nickel, can be a solid solution hardening agent in the composite board, is also a better hardenability additive, can effectively improve the low-temperature performance of the steel, and can refine grains in alloy steel and improve the hardenability and the hot strength, the composite board produced by the invention has higher toughness and wear resistance, and higher high-temperature creep rupture strength.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. A high-toughness wear-resistant composite plate is characterized in that: comprises the following elements in percentage by weight: 0.03 to 0.09 percent of carbon, 0.05 to 0.2 percent of silicon, 0.05 to 0.15 percent of nickel, 0.005 to 0.025 percent of phosphorus, 0.005 to 0.015 percent of titanium, 0.5 to 1.5 percent of chromium, 0.05 to 0.15 percent of vanadium, 0.01 to 0.05 percent of aluminum, 0.05 to 0.15 percent of lanthanum, 0.1 to 0.2 percent of tungsten, 0.1 to 0.3 percent of molybdenum, and the balance of iron and inevitable impurities.
2. A high toughness, wear resistant composite panel according to claim 1 wherein: comprises the following elements in percentage by weight: 0.05 to 0.07 percent of carbon, 0.01 to 0.15 percent of silicon, 0.08 to 0.12 percent of nickel, 0.01 to 0.02 percent of phosphorus, 0.008 to 0.012 percent of titanium, 0.8 to 1.2 percent of chromium, 0.08 to 0.12 percent of vanadium, 0.02 to 0.04 percent of aluminum, 0.08 to 0.12 percent of lanthanum, 0.13 to 0.17 percent of tungsten, 0.15 to 0.25 percent of molybdenum, and the balance of iron and inevitable impurities.
3. A high toughness, wear resistant composite panel according to claim 1 wherein: comprises the following elements in percentage by weight: 0.06% of carbon, 0.125% of silicon, 0.1% of nickel, 0.015% of phosphorus, 0.01% of titanium, 1% of chromium, 0.1% of vanadium, 0.3% of aluminum, 0.1% of lanthanum, 0.15% of tungsten, 0.2% of molybdenum, and the balance of iron and inevitable impurities.
4. A high toughness, wear resistant composite panel according to claim 1 wherein: the high-toughness wear-resistant composite plate has a thickness of 50-60mm, and the content of the inevitable impurities is less than 0.005%.
5. A method of manufacturing a high toughness abrasion resistant composite panel according to any of claims 1 to 4, wherein: the preparation method comprises the following specific steps:
the method comprises the following steps: weighing the raw materials according to the weight percentage, uniformly mixing the weighed raw materials, putting the mixture into a ball mill for ball milling, putting the mixture into a smelting furnace for primary smelting after the ball milling is finished, and obtaining smelting molten steel after the primary smelting is finished;
step two: introducing the molten steel obtained by the primary smelting in the step one into a refining furnace for refining under the action of inert gas, wherein the temperature in the refining furnace is 1450-;
step three: injecting the refined material in the step two into a mold for vacuum degassing casting, obtaining a steel billet or steel ingot after casting, performing reheating treatment on the obtained steel billet or steel ingot, heating the steel billet or steel ingot to 1050-;
step four: rolling the reheated steel billet or steel ingot in the third step, firstly carrying out primary rolling on the steel billet or steel ingot during rolling, wherein the temperature during primary rolling is 1150-plus 1180, the number of effective rolling passes is 3-7, carrying out finish rolling after the primary rolling is finished, the temperature during finish rolling is 950-plus 1000 ℃, and the number of effective rolling passes is 2-6;
step five: cooling and tempering the steel billet or steel ingot rolled in the fourth step, and performing air cooling after tempering to obtain a molded composite plate;
step six: and (5) homogenizing the composite board formed in the fifth step in a homogenizing furnace, and then performing aging treatment to obtain the high-toughness wear-resistant composite board.
6. The method for preparing a high toughness abrasion resistant composite plate according to claim 5, wherein: the particle size diameter of the raw material after ball milling in the step one is 40-70um, the raw material is firstly smelted for 5-8min under the condition that the temperature is 1300-1400 ℃, and then the smelting is carried out for 5-8min under the condition that the temperature is increased to 1650-1750 ℃, and the temperature increasing speed is 20-25 ℃/min.
7. The method for preparing a high toughness abrasion resistant composite plate according to claim 5, wherein: the casting step in the third step is continuous casting or die casting, the moving speed of the cast billet or steel ingot is 15-20 cm/min during reheating treatment, the product obtained after reheating treatment in the third step is subjected to descaling treatment, the temperature during descaling treatment is 980 and 1020 ℃, and the time for descaling treatment is 3-5 h.
8. The method for preparing a high toughness abrasion resistant composite plate according to claim 5, wherein: the total rolling reduction rate of the rolling in the fourth step is 70-80%.
9. The method for preparing a high toughness abrasion resistant composite plate according to claim 5, wherein: and in the step five, water cooling is adopted during cooling, the cooling speed is 30-50 ℃/s, the tempering temperature is 600-650 ℃, and the tempering time is 20-30 min.
10. The method for preparing a high toughness abrasion resistant composite plate according to claim 5, wherein: the temperature of the homogenization treatment in the sixth step is 600-700 ℃, the time of the homogenization treatment is 2-4h, the temperature of the aging treatment is 260-300 ℃, the time of the treatment is 12-15h, and the air cooling is carried out after the aging treatment to the room temperature.
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CN108359900A (en) * 2018-04-01 2018-08-03 温州市赢创新材料技术有限公司 A kind of low production method for being mingled with pipe line steel of high intensity
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CN110408862A (en) * 2019-08-19 2019-11-05 衡阳华菱钢管有限公司 Seamless steel pipe, manufacturing method and its application
CN110760765A (en) * 2018-07-27 2020-02-07 宝山钢铁股份有限公司 600 MPa-grade quenched and tempered steel plate with ultralow cost, high elongation and strain aging embrittlement resistance and manufacturing method thereof
CN113286910A (en) * 2019-03-29 2021-08-20 日本制铁株式会社 Steel sheet and method for producing same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104685087A (en) * 2012-09-26 2015-06-03 新日铁住金株式会社 Composite-structure steel sheet and process for producing same
CN108359900A (en) * 2018-04-01 2018-08-03 温州市赢创新材料技术有限公司 A kind of low production method for being mingled with pipe line steel of high intensity
CN108796368A (en) * 2018-06-06 2018-11-13 澳洋集团有限公司 A kind of high-strength composite steel plate and preparation method thereof
CN110760765A (en) * 2018-07-27 2020-02-07 宝山钢铁股份有限公司 600 MPa-grade quenched and tempered steel plate with ultralow cost, high elongation and strain aging embrittlement resistance and manufacturing method thereof
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