CN111304546A - Super-strength wear-resistant alloy and preparation method thereof - Google Patents

Super-strength wear-resistant alloy and preparation method thereof Download PDF

Info

Publication number
CN111304546A
CN111304546A CN202010264886.6A CN202010264886A CN111304546A CN 111304546 A CN111304546 A CN 111304546A CN 202010264886 A CN202010264886 A CN 202010264886A CN 111304546 A CN111304546 A CN 111304546A
Authority
CN
China
Prior art keywords
resistant alloy
strength wear
furnace
alloy
wear resistant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010264886.6A
Other languages
Chinese (zh)
Inventor
曹尔瑜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Tai Cast Wear Resistant Material Co ltd
Original Assignee
Sichuan Tai Cast Wear Resistant Material Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Tai Cast Wear Resistant Material Co ltd filed Critical Sichuan Tai Cast Wear Resistant Material Co ltd
Priority to CN202010264886.6A priority Critical patent/CN111304546A/en
Publication of CN111304546A publication Critical patent/CN111304546A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • 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
    • C22C38/005—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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
    • 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The invention discloses an ultra-strength wear-resistant alloy, belonging to the technical field of wear-resistant alloys, which comprises the following components in percentage by weight: c: 0.25-0.60%, B: 0.001-0.005%, Cr: 1.8-2.2%, Nb: 0.25 to 0.35%, Si: 0.5-0.8%, Mn: 0.6-0.9%, Mo: 0.4-0.5%, Cu: 0.3-0.7%, N: 0.025 to 0.030%, Re: 0.35-0.50%, S < 0.03%, P < 0.03%, and the balance Fe. The alloy prepared by the invention does not add noble elements such as chromium, molybdenum and the like, but uses boron as a main alloy element, and high wear resistance is obtained by taking high-hardness boride and boron-containing carbide formed in steel by boron as a wear-resistant framework. The trace cerium improves the distribution form of the hard phase in the matrix and further improves the performance of the alloy. The alloy preparation method has lower production process cost; and the modification treatment technology has lower cost and the modification treatment method is simpler.

Description

Super-strength wear-resistant alloy and preparation method thereof
Technical Field
The invention belongs to the technical field of wear-resistant alloys, and particularly relates to an ultra-strength wear-resistant alloy and a preparation method thereof.
Background
Wear is a common cause of equipment failure or material damage in many industrial sectors, and it also consumes large amounts of energy and material. The abrasion of various engineering excavating and loading machine bucket teeth, various abrasion-resistant conveying pipelines, various crusher hammers and jaw plates and various track plates manufactured by abrasion-resistant alloy cast steel is more serious due to the working conditions of high strength, severe weather and the like.
At present, widely used metal wear-resistant materials are: high manganese steel; medium and low alloy steels; high-chromium cast iron; high speed steel. The materials solve the problem that the metal is not wear-resistant to different degrees, but have the defects of different degrees: as is well known, high manganese steel has high wear resistance, good toughness and good safety performance only under the action of strong impact and high stress of high-hardness abrasive. However, the high manganese steel is not wear-resistant under the action of medium and low hardness abrasive and low stress, so that the use of the high manganese steel is limited. Medium and low alloy steels have better toughness and are wear resistant than high manganese steels under low stress, but the wear resistance is poor due to poor through-hardening. The high-chromium cast iron is a material with better wear resistance which is recognized at home and abroad, and is also a wear-resistant material which is used more generally. However, the high-chromium cast iron has high alloy element content, so the cost is high, and the defects of insufficient toughness exist. The high-speed steel contains a large amount of carbide with higher hardness, and the wear resistance of the high-speed steel is improved by 3-5 times compared with that of high-chromium cast iron. However, because of high cost and complex manufacturing process, the method is generally only used for manufacturing parts such as cutter rollers and the like, and is difficult to popularize in a large range.
At present, expensive noble metals and materials with higher alloy content are mostly adopted for foreign wear-resistant parts, for example, the chromium content in Russia reaches 30%, a large amount of nickel is used in Germany, and expensive niobium is used in Japan, so that the production cost is high, the process is complex, and the price of imported products is very expensive. China is a country lacking nickel and chromium, the overall production level of wear-resistant parts is backward, the wear resistance of materials is general, the materials are easy to break and damage, the energy consumption is high, the environmental pollution is serious, and the production cost is increased if a large amount of noble metals are adopted. Therefore, a new technical scheme is provided for solving the problems.
Disclosure of Invention
The invention aims to provide an ultra-strength wear-resistant alloy and a preparation method thereof, which are characterized in that C, Cu, Mn, Mo and Si are used as main alloy elements to obtain the alloy with high wear resistance, the toughness is good, the hardness is high, the performance requirements of different working conditions are met, the production process is simple, and the cost is low.
In order to achieve the purpose, the invention is realized by the following technical scheme:
on one hand, the invention provides an ultra-strength wear-resistant alloy which comprises the following components in percentage by weight: c: 0.25-0.60%, B: 0.001-0.005%, Cr: 1.8-2.2%, Nb: 0.25 to 0.35%, Si: 0.5-0.8%, Mn: 0.6-0.9%, Mo: 0.4-0.5%, Cu: 0.3-0.7%, N: 0.025 to 0.030%, Re: 0.35-0.50%, S < 0.03%, P < 0.03%, and the balance Fe.
Further, the weight percentages of the components are as follows: c: 0.35-0.45%, B: 0.002-0.004%, Cr: 2.0-2.2%, Nb: 0.28 to 0.32%, Si: 0.6 to 0.7%, Mn: 0.7-0.8%, Mo: 0.4-0.5%, Cu: 0.4-0.6%, N: 0.026-0.028%, Re: 0.4-0.5%, S < 0.03%, P < 0.03%, and the balance Fe.
Furthermore, the weight percentages of the components are as follows: c: 0.38%, B: 0.002%, Cr: 1.9%, Nb: 0.28%, Si: 0.6%, Mn: 0.7%, Mo: 0.45%, Cu: 0.5%, N: 0.028%, Re: 0.42%, S < 0.03%, P < 0.03%, the balance being Fe.
On the other hand, the invention provides a preparation method of the super-strength wear-resistant alloy, which comprises the following steps:
(1) cleaning ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese, weighing and proportioning according to the mass percentage requirements, and placing in a classified manner;
(2) putting the weighed ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese into a furnace for heating and smelting, adding ferroboron at the later stage of smelting, carrying out isothermal treatment after melting down, adding aluminum wires or aluminum particles for pre-deoxidation, then adding a desulfurizing agent for desulfurization, and slagging off;
(3) adjusting the components in the ratio in front of the furnace, raising the furnace temperature after the components are qualified, adding ferrotitanium into the furnace, adding aluminum wires or aluminum particles, and discharging the aluminum wires or aluminum particles after final deoxidation treatment;
(4) adding a composite modifier into the discharged iron liquid, and inoculating and modifying the iron liquid by adopting a ladle bottom flushing method;
(5) pouring the inoculated and modified molten iron;
(6) and after the pouring is finished, cooling, cleaning, polishing, sandblasting and heat treatment are carried out.
Further, the smelting temperature is 1800-2000 ℃, the isothermal treatment temperature is 1800 ℃, and the isothermal treatment time is 10-12 min.
Further, in the step (3), the temperature of the furnace is raised to 1800-2200 ℃.
Further, the mass fractions of the aluminum wires or the aluminum particles adopted by the pre-deoxidation and the final deoxidation account for 0.20 to 0.35 percent of the mass of the molten iron.
Further, the composite alterant comprises the following components in percentage by mass: 0.15% of Si-Ba, 0.15% of Si-Ca, 0.0028% of B-Fe, 0.2% of Zr and 0.3-0.4 Re. Wherein the content of Ba in Si-Ba is more than 60%, the content of Ca in Si-Ca is more than 60%, and B is added in the form of B-Fe.
Further, crushing the composite modifier of the components into small particles of 1-5 mm, drying at 250 ℃, pre-placing at the bottom of a casting ladle, and then performing inoculation and modification treatment.
Further, inoculating and modifying the molten iron in the casting ladle, standing for 5-8 min, and then casting at 1600-1650 ℃.
Further, during heat treatment, charcoal is embedded into the heat treatment furnace or antioxidant coating is coated on the surface of the workpiece, heat preservation is carried out at 1200 ℃ for 2 hours, then water quenching is carried out, and tempering treatment is carried out at 250 ℃ for 4 hours.
The design basis of the invention is as follows:
c: in the metal wear-resistant material, C is mainly used for improving the hardness of a matrix, the too low C can cause the insufficient hardness of the matrix and the insufficient wear resistance, and the too high C can cause the large brittleness and the insufficient toughness of the material, so the content of C in the invention is designed to be 0.25-0.60%.
Mn: the hardenability of the casting can be improved by adding a proper amount of Mn into the high-carbon high-boron wear-resistant alloy, but the excessive Mn can increase the austenite amount in the matrix, so that the hardness of the matrix is reduced and the matrix is not wear-resistant, and therefore the Mn content is designed to be 0.6-0.9%.
Cr: in the invention, Cr is partially dissolved in the matrix in a solid manner, so that the hardness of the matrix is improved, Fe atoms in boride are partially replaced, composite boride is formed, and a hard phase is stabilized. In addition, Cr can also improve the hardenability of the material. However, the brittleness of the material is increased due to the excessively high Cr content, and the Cr content is designed to be 1.8-2.2% in comprehensive consideration.
B: the B has rich reserves and low price. B has very low solubility in iron, and boron added to iron exists mostly in the form of boride or boron-containing carbide. The hardness of the compound generated by boron and iron is much higher than that of Fe3C, carbide Cr with chromium7C3And meanwhile, the hardness and the wear resistance of the alloy can be obviously improved by adding boron into the alloy. The amount of boride and boron-containing carbide has a direct relationship with the boron content, and by controlling the boron content, the amount of hard phase and thus the hardness of the alloy can be controlled. According to the requirements of different working conditions, the content of B can be selected to be 0.001-0.005%.
Si: the high-carbon high-boron wear-resistant alloy can improve the hardness of a matrix by adding a proper amount of Si, but the excessive Si can cause the material to have large brittleness, so that the Si content is designed to be 0.5-0.8%.
S, P is a harmful element in casting, but is inevitably brought into the alloy melt, so S is only controlled to be less than 0.03%, and P is only controlled to be less than 0.03%.
The invention has the beneficial effects that:
the invention provides an ultra-strength wear-resistant alloy and a preparation method thereof, wherein the wear-resistant alloy prepared by the invention is not added with noble elements such as Ni, and the like, but is added with a small amount of noble metals such as Nb, Cr, Mo, and the like, and the alloy with high wear resistance is obtained by taking C, Cu, Mn, Mo and Si as main alloy elements. The trace Re improves the distribution form of the hard phase in the matrix, and further improves the performance of the alloy. Compared with the traditional alloy steel added with various alloy components such as Cr, Ni and the like, the alloy steel has better toughness and higher hardness, but has low cost and simple processing technology. The alloy preparation method has lower production process cost; and the modification treatment technology has lower cost and the modification treatment method is simpler. The defect that the quantity of particles in the net shape is reduced by prolonging the high-temperature heat preservation time during heat treatment or using electromagnetic stirring in the existing wear-resistant alloy material is overcome, the toughness of the high-boron wear-resistant alloy material and the reliability of the performance are improved, and the comprehensive use performance is further improved.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one skilled in the art from the embodiments given herein are intended to be within the scope of the invention.
Example 1
The embodiment provides an ultra-strength wear-resistant alloy which comprises the following components in percentage by weight: c: 0.25%, B: 0.001%, Cr: 1.8%, Nb: 0.25%, Si: 0.5%, Mn: 0.6%, Mo: 0.4%, Cu: 0.3%, N: 0.025%, Re: 0.35%, S < 0.03%, P < 0.03%, the balance being Fe.
A preparation method of the super-strength wear-resistant alloy comprises the following steps:
(1) cleaning ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese, weighing and proportioning according to the mass percentage requirements, and placing in a classified manner;
(2) putting the weighed ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese into a furnace for heating and smelting, adding ferroboron at the later stage of smelting, carrying out isothermal treatment after melting down, adding aluminum wires or aluminum particles for pre-deoxidation, then adding a desulfurizing agent for desulfurization, and slagging off;
(3) adjusting the components in the ratio in front of the furnace, raising the furnace temperature after the components are qualified, adding ferrotitanium into the furnace, adding aluminum wires or aluminum particles, and discharging the aluminum wires or aluminum particles after final deoxidation treatment;
(4) adding a composite modifier into the discharged iron liquid, and inoculating and modifying the iron liquid by adopting a ladle bottom flushing method;
(5) pouring the inoculated and modified molten iron;
(6) and after the pouring is finished, cooling, cleaning, polishing, sandblasting and heat treatment are carried out.
In the embodiment, the melting temperature is 1850 ℃, the isothermal treatment temperature is 1800 ℃ and the isothermal treatment time is 10 min.
In step (3) of this example, the furnace temperature was increased to 1900 ℃.
In the embodiment, the mass fractions of the aluminum wires or the aluminum particles adopted in the pre-deoxidation and the final deoxidation account for 0.20 percent of the mass of the molten iron.
In the embodiment, the composite alterant comprises the following components in percentage by mass: 0.15% of Si-Ba, 0.15% of Si-Ca, 0.0028% of B-Fe, 0.2% of Zr and 0.3-0.4 Re. Wherein the content of Ba in Si-Ba is more than 60%, the content of Ca in Si-Ca is more than 60%, and B is added in the form of B-Fe.
In the embodiment, the composite alterant with the components is crushed into small particles with the particle size of 3mm, is dried at 250 ℃, is preset at the bottom of a casting ladle, and is inoculated and altered.
In this embodiment, the iron liquid in the ladle is inoculated and modified, then kept stand for 4min, and then poured, wherein the pouring temperature is 1600 ℃.
In the heat treatment of the embodiment, charcoal is embedded in the heat treatment furnace or the surface of the workpiece is coated with the antioxidant coating, then the heat preservation at 1200 ℃ is adopted for 2 hours, then water quenching is carried out, and then the tempering treatment at 250 ℃ is adopted for 4 hours.
Example 2
The embodiment provides an ultra-strength wear-resistant alloy which comprises the following components in percentage by weight: c: 0.38%, B: 0.003%, Cr: 1.9%, Nb: 0.28%, Si: 0.65%, Mn: 0.8%, Mo: 0.45%, Cu: 0.55%, N: 0.028%, Re: 0.36%, S < 0.03%, P < 0.03%, the balance being Fe.
A preparation method of the super-strength wear-resistant alloy comprises the following steps:
(1) cleaning ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese, weighing and proportioning according to the mass percentage requirements, and placing in a classified manner;
(2) putting the weighed ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese into a furnace for heating and smelting, adding ferroboron at the later stage of smelting, carrying out isothermal treatment after melting down, adding aluminum wires or aluminum particles for pre-deoxidation, then adding a desulfurizing agent for desulfurization, and slagging off;
(3) adjusting the components in the ratio in front of the furnace, raising the furnace temperature after the components are qualified, adding ferrotitanium into the furnace, adding aluminum wires or aluminum particles, and discharging the aluminum wires or aluminum particles after final deoxidation treatment;
(4) adding a composite modifier into the discharged iron liquid, and inoculating and modifying the iron liquid by adopting a ladle bottom flushing method;
(5) pouring the inoculated and modified molten iron;
(6) and after the pouring is finished, cooling, cleaning, polishing, sandblasting and heat treatment are carried out.
In the embodiment, the smelting temperature is 1900 ℃, the isothermal treatment temperature is 1800 ℃ and the isothermal treatment time is 11 min.
In step (3) of this example, the furnace temperature was increased to 2000 ℃.
In the embodiment, the mass fractions of the aluminum wires or the aluminum particles adopted in the pre-deoxidation and the final deoxidation account for 0.28 percent of the mass of the molten iron.
In the embodiment, the composite alterant comprises the following components in percentage by mass: 0.15% of Si-Ba, 0.15% of Si-Ca, 0.0028% of B-Fe, 0.2% of Zr and 0.3-0.4 Re. Wherein the content of Ba in Si-Ba is more than 60%, the content of Ca in Si-Ca is more than 60%, and B is added in the form of B-Fe.
In the embodiment, the composite alterant with the components is crushed into small particles with the particle size of 3mm, is dried at 250 ℃, is preset at the bottom of a casting ladle, and is inoculated and altered.
In this example, the iron liquid in the ladle was inoculated and modified, then allowed to stand for 6min, and then poured at 1650 ℃.
In the heat treatment of the embodiment, charcoal is embedded in the heat treatment furnace or the surface of the workpiece is coated with the antioxidant coating, then the heat preservation at 1200 ℃ is adopted for 2 hours, then water quenching is carried out, and then the tempering treatment at 250 ℃ is adopted for 4 hours.
Example 3
The super-strength wear-resistant alloy comprises the following components in percentage by weight: c: 0.42%, B: 0.003%, Cr: 2.1%, Nb: 0.30%, Si: 0.6%, Mn: 0.8%, Mo: 0.45%, Cu: 0.5%, N: 0.029%, Re: 0.38%, S < 0.03%, P < 0.03%, the balance being Fe.
A preparation method of the super-strength wear-resistant alloy comprises the following steps:
(1) cleaning ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese, weighing and proportioning according to the mass percentage requirements, and placing in a classified manner;
(2) putting the weighed ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese into a furnace for heating and smelting, adding ferroboron at the later stage of smelting, carrying out isothermal treatment after melting down, adding aluminum wires or aluminum particles for pre-deoxidation, then adding a desulfurizing agent for desulfurization, and slagging off;
(3) adjusting the components in the ratio in front of the furnace, raising the furnace temperature after the components are qualified, adding ferrotitanium into the furnace, adding aluminum wires or aluminum particles, and discharging the aluminum wires or aluminum particles after final deoxidation treatment;
(4) adding a composite modifier into the discharged iron liquid, and inoculating and modifying the iron liquid by adopting a ladle bottom flushing method;
(5) pouring the inoculated and modified molten iron;
(6) and after the pouring is finished, cooling, cleaning, polishing, sandblasting and heat treatment are carried out.
In the embodiment, the smelting temperature is 1900 ℃, the isothermal treatment temperature is 1800 ℃ and the isothermal treatment time is 10 min.
In step (3) of this example, the furnace temperature was increased to 2000 ℃.
In the embodiment, the mass fractions of the aluminum wires or the aluminum particles adopted in the pre-deoxidation and the final deoxidation account for 0.30 percent of the mass of the molten iron.
In the embodiment, the composite alterant comprises the following components in percentage by mass: 0.15% of Si-Ba, 0.15% of Si-Ca, 0.0028% of B-Fe, 0.2% of Zr and 0.3-0.4 Re. Wherein the content of Ba in Si-Ba is more than 60%, the content of Ca in Si-Ca is more than 60%, and B is added in the form of B-Fe.
In the embodiment, the composite alterant with the components is crushed into small particles with the particle size of 3mm, is dried at 250 ℃, is preset at the bottom of a casting ladle, and is inoculated and altered.
In this embodiment, the iron liquid in the ladle is inoculated and modified, then kept stand for 6min, and then poured, wherein the pouring temperature is 1600 ℃.
In the heat treatment of the embodiment, charcoal is embedded in the heat treatment furnace or the surface of the workpiece is coated with the antioxidant coating, then the heat preservation at 1200 ℃ is adopted for 2 hours, then water quenching is carried out, and then the tempering treatment at 250 ℃ is adopted for 4 hours.
Example 4
The super-strength wear-resistant alloy comprises the following components in percentage by weight: c: 0.55%, B: 0.004%, Cr: 2.2%, Nb: 0.35%, Si: 0.7%, Mn: 0.8%, Mo: 0.45%, Cu: 0.6%, N: 0.029%, Re: 0.45%, S < 0.03%, P < 0.03%, and the balance Fe.
A preparation method of the super-strength wear-resistant alloy comprises the following steps:
(1) cleaning ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese, weighing and proportioning according to the mass percentage requirements, and placing in a classified manner;
(2) putting the weighed ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese into a furnace for heating and smelting, adding ferroboron at the later stage of smelting, carrying out isothermal treatment after melting down, adding aluminum wires or aluminum particles for pre-deoxidation, then adding a desulfurizing agent for desulfurization, and slagging off;
(3) adjusting the components in the ratio in front of the furnace, raising the furnace temperature after the components are qualified, adding ferrotitanium into the furnace, adding aluminum wires or aluminum particles, and discharging the aluminum wires or aluminum particles after final deoxidation treatment;
(4) adding a composite modifier into the discharged iron liquid, and inoculating and modifying the iron liquid by adopting a ladle bottom flushing method;
(5) pouring the inoculated and modified molten iron;
(6) and after the pouring is finished, cooling, cleaning, polishing, sandblasting and heat treatment are carried out.
In this example, the melting temperature was 1950 ℃, the isothermal processing temperature was 1800 ℃, and the isothermal processing time was 12 min.
In step (3) of this example, the furnace temperature was increased to 2000 ℃.
In the embodiment, the mass fractions of the aluminum wires or the aluminum particles adopted in the pre-deoxidation and the final deoxidation account for 0.30 percent of the mass of the molten iron.
In the embodiment, the composite alterant comprises the following components in percentage by mass: 0.15% of Si-Ba, 0.15% of Si-Ca, 0.0028% of B-Fe, 0.2% of Zr and 0.3-0.4 Re. Wherein the content of Ba in Si-Ba is more than 60%, the content of Ca in Si-Ca is more than 60%, and B is added in the form of B-Fe.
In the embodiment, the composite modifier with the components is crushed into 4mm small particles, is dried at 250 ℃, is preset at the bottom of a casting ladle, and is inoculated and modified.
In this example, the iron liquid in the ladle was inoculated and modified, then allowed to stand for 6min, and then poured at 1650 ℃.
In the heat treatment of the embodiment, charcoal is embedded in the heat treatment furnace or the surface of the workpiece is coated with the antioxidant coating, then the heat preservation at 1200 ℃ is adopted for 2 hours, then water quenching is carried out, and then the tempering treatment at 250 ℃ is adopted for 4 hours.
The super-strength wear-resistant alloy prepared by the invention is divided into four series, and the difference is that the C content in the alloy is different, wherein the C content is 0.25-0.35% and is a CEY-1 series, the C content is 0.35-0.40% and is a CEY-2 series, the C content is 0.4-0.45% and is a CEY-3 series, the C content is 0.45-0.6% and is a CEY-4 series, the average value of the CEY-1 series is 50.5HRC, the average value of the CEY-2 series is 55.8HRC, the average value of the CEY-3 series is 59.4HRC, and the average value of the CEY-4 series is 58.3 HRC. The average impact toughness ak of the CEY-1 series obtained by the impact test is 5.6J/cm2The average impact toughness ak of the CEY-2 series is 16.3J/cm2The average impact toughness ak of the CEY-3 series is 27.8J/cm2The average impact toughness ak of the CEY-4 series is 4.9J/cm2。
Although the present invention has been described with reference to the specific embodiments, it should be understood that the scope of the present invention is not limited thereto, and those skilled in the art will appreciate that various modifications and variations can be made without inventive changes by those skilled in the art based on the technical solutions of the present invention.

Claims (10)

1. An ultra-strength wear-resistant alloy is characterized in that: the weight percentages of the components are as follows: c: 0.25-0.60%, B: 0.001-0.005%, Cr: 1.8-2.2%, Nb: 0.25 to 0.35%, Si: 0.5-0.8%, Mn: 0.6-0.9%, Mo: 0.4-0.5%, Cu: 0.3-0.7%, N: 0.025 to 0.030%, Re: 0.35-0.50%, S < 0.03%, P < 0.03%, and the balance Fe.
2. The super strength wear resistant alloy of claim 1, wherein: c: 0.35-0.45%, B: 0.002-0.004%, Cr: 2.0-2.2%, Nb: 0.28 to 0.32%, Si: 0.6 to 0.7%, Mn: 0.7-0.8%, Mo: 0.4-0.5%, Cu: 0.4-0.6%, N: 0.026-0.028%, Re: 0.4-0.5%, S < 0.03%, P < 0.03%, and the balance Fe.
3. A method of making the super strength wear resistant alloy of claim 1, wherein: a preparation method of the super-strength wear-resistant alloy comprises the following steps:
(1) cleaning ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese, weighing and proportioning according to the mass percentage requirements, and placing in a classified manner;
(2) putting the weighed ferroboron, scrap steel, ferrochromium, ferrocolumbium, ferromolybdenum and ferromanganese into a furnace for heating and smelting, adding ferroboron at the later stage of smelting, carrying out isothermal treatment after melting down, adding aluminum wires or aluminum particles for pre-deoxidation, then adding a desulfurizing agent for desulfurization, and slagging off;
(3) adjusting the components in the ratio in front of the furnace, raising the furnace temperature after the components are qualified, adding ferrotitanium into the furnace, adding aluminum wires or aluminum particles, and discharging the aluminum wires or aluminum particles after final deoxidation treatment;
(4) adding a composite modifier into the discharged iron liquid, and inoculating and modifying the iron liquid by adopting a ladle bottom flushing method;
(5) pouring the inoculated and modified molten iron;
(6) and after the pouring is finished, cooling, cleaning, polishing, sandblasting and heat treatment are carried out.
4. The method of super strength wear resistant alloy of claim 3 wherein: the smelting temperature is 1800-2000 ℃, the isothermal treatment temperature is 1800 ℃, and the isothermal treatment time is 10-12 min.
5. The method of super strength wear resistant alloy of claim 3 wherein: in the step (3), the temperature of the furnace is raised to 1800-2200 ℃.
6. The method of super strength wear resistant alloy of claim 3 wherein: the mass fractions of the aluminum wires or aluminum particles adopted by the pre-deoxidation and the final deoxidation account for 0.20 to 0.35 percent of the mass of the molten iron.
7. The method of super strength wear resistant alloy of claim 3 wherein: the composite alterant comprises the following components in percentage by mass: 0.15% of Si-Ba, 0.15% of Si-Ca, 0.0028% of B-Fe, 0.2% of Zr and 0.3-0.4 Re.
8. The method of super strength wear resistant alloy of claim 3 wherein: crushing the inoculation alterant of the components into small particles of 1-5 mm, drying at 250 ℃, presetting the small particles at the bottom of a casting ladle, and then inoculating and modifying.
9. The method of super strength wear resistant alloy of claim 3 wherein: inoculating and modifying the molten iron in the casting ladle, standing for 5-8 min, and then casting at 1600-1650 ℃.
10. The method of super strength wear resistant alloy of claim 3 wherein: during heat treatment, charcoal is embedded into a heat treatment furnace or antioxidant coating is coated on the surface of a workpiece, heat preservation is carried out at 1200 ℃ for 2 hours, water quenching is carried out, and tempering treatment is carried out at 250 ℃ for 4 hours.
CN202010264886.6A 2020-04-07 2020-04-07 Super-strength wear-resistant alloy and preparation method thereof Pending CN111304546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010264886.6A CN111304546A (en) 2020-04-07 2020-04-07 Super-strength wear-resistant alloy and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010264886.6A CN111304546A (en) 2020-04-07 2020-04-07 Super-strength wear-resistant alloy and preparation method thereof

Publications (1)

Publication Number Publication Date
CN111304546A true CN111304546A (en) 2020-06-19

Family

ID=71157587

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010264886.6A Pending CN111304546A (en) 2020-04-07 2020-04-07 Super-strength wear-resistant alloy and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111304546A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112680632A (en) * 2020-12-29 2021-04-20 黑龙江怀特新型材料有限公司 Wear-resistant alloy soft belt for machine tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101568661A (en) * 2007-10-29 2009-10-28 新日本制铁株式会社 Martensitic non-heat-treated steel for hot forging and non-heat-treated steel hot forgings
JP2012031510A (en) * 2010-06-30 2012-02-16 Jfe Steel Corp Abrasion-resistant steel sheet excellent in welded part toughness and delayed fracture resistance
CN105039859A (en) * 2015-08-05 2015-11-11 曾松盛 High-boron, iron-based and abrasion-resistant alloy material and production method thereof
CN105886896A (en) * 2016-04-22 2016-08-24 柳州凯通新材料科技有限公司 Abrasion resistant middle carbon alloyed steel material and processing technique thereof
CN107460405A (en) * 2017-08-22 2017-12-12 中北大学 Ultrahigh hardness superhigh intensity speciality steel and its production method
CN108048740A (en) * 2017-12-04 2018-05-18 成都六惠科技有限公司 A kind of Hi-Stren steel and its preparation process
CN108866446A (en) * 2018-09-02 2018-11-23 马鞍山市九华耐磨材料有限公司 A kind of high-toughness wear-resistant composite material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101568661A (en) * 2007-10-29 2009-10-28 新日本制铁株式会社 Martensitic non-heat-treated steel for hot forging and non-heat-treated steel hot forgings
JP2012031510A (en) * 2010-06-30 2012-02-16 Jfe Steel Corp Abrasion-resistant steel sheet excellent in welded part toughness and delayed fracture resistance
CN105039859A (en) * 2015-08-05 2015-11-11 曾松盛 High-boron, iron-based and abrasion-resistant alloy material and production method thereof
CN105886896A (en) * 2016-04-22 2016-08-24 柳州凯通新材料科技有限公司 Abrasion resistant middle carbon alloyed steel material and processing technique thereof
CN107460405A (en) * 2017-08-22 2017-12-12 中北大学 Ultrahigh hardness superhigh intensity speciality steel and its production method
CN108048740A (en) * 2017-12-04 2018-05-18 成都六惠科技有限公司 A kind of Hi-Stren steel and its preparation process
CN108866446A (en) * 2018-09-02 2018-11-23 马鞍山市九华耐磨材料有限公司 A kind of high-toughness wear-resistant composite material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
符寒光等: "《高速钢轧辊制造技术》", 30 June 2007, 冶金工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112680632A (en) * 2020-12-29 2021-04-20 黑龙江怀特新型材料有限公司 Wear-resistant alloy soft belt for machine tool

Similar Documents

Publication Publication Date Title
CN100519804C (en) High chromium abrasion-proof cast iron abrasive disc and manufacturing method thereof
CN100369681C (en) Compound high speed steel roll and its making process
CN100370050C (en) Guide and guard roller for guiding steel billet in high speed wire rolling machine and its making process
CN101775558B (en) Fe-Cr-B cast abrasion-resistant alloy and manufacturing method thereof
CN1328406C (en) Martensite wear resistant cast steel with film austenic toughened and its manufacturing method
CN102703816B (en) High-carbon low-alloy wear-resistant ball steel and production process thereof
AU2020442274A1 (en) 690 MPa-graded easy-to-weld corrosion-resisting high-strength steel and manufacturing method therefor
CN100574910C (en) Centrifugal casting half steel/steel/graphite steel composite roll collar and preparation method thereof
CN101956140B (en) Lining plate for large ball mill and casting method thereof
CN106238709A (en) The manufacture of a kind of grinding roller/remanufacture high-abrasive material and preparation method thereof
CN110000362B (en) High-tungsten-vanadium high-speed steel wear-resistant roller and manufacturing method thereof
CN103060662B (en) A kind of preparation technology of cast alloy iron abrading-ball
CN102534356A (en) Wear-resistant white cast iron material and preparation method thereof
CN103993246A (en) Low-alloy ball mill wear resistant lining board and making method thereof
CN102808134A (en) Alloy steel lining plate special for large/medium-sized ball mill and production process for alloy steel lining plate
CN102851569B (en) High-temperature resistant and abrasion-resistant white cast iron piece and production method
CN100560766C (en) A kind of melt treating method that is used for the high-vanadium high-speed steel roller material of all kinds of rolling mills
CN1276113C (en) High boron foundry iron base anti-wear alloy and its heat treatment method
CN106544596B (en) A kind of aluminium alloying high-boron high-speed steel composite roller and preparation method thereof
CN103993217B (en) The preparation method of Large Crusher tup
CN104911494B (en) Boron-contained wear-resisting steel casting material and preparation method thereof
CN111378909A (en) High-toughness high manganese steel lining plate and production process thereof
CN111304546A (en) Super-strength wear-resistant alloy and preparation method thereof
CN1380436A (en) High vanadium high-wear-resistant alloy and its preparation method
CN111440997A (en) Ultrahigh manganese cast steel

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200619

RJ01 Rejection of invention patent application after publication