Wear-resistant and corrosion-resistant hard alloy material and preparation method thereof

Abstract

The invention discloses a wear-resistant and corrosion-resistant hard alloy material and a preparation method thereof. The wear-resistant and corrosion-resistant hard alloy material comprises the following raw materials in percentage: 10-30% of cobalt, 10-30% of chromium, 10-30% of tungsten, 5-20% of molybdenum, 5-20% of nickel, 0.5-2% of carbon, 1-3% of iron, 1-5% of titanium, 1-5% of silicon and 2-5% of alloy structure adjusting elements. According to the preparation method, multiple metal materials and alloy structure adjusting elements are combined, and two times of alloying treatment and two times of sintering are matched, so that the uniformity and activity of an alloy structure in the manufacturing process can be effectively improved, holes in the alloy structure are reduced, meanwhile, the corrosion resistance and the wear resistance of the hard alloy material can be effectively improved, and the use requirement is met.

Description

Technical Field

[0001] The present invention relates to the technical field of alloy materials, and particularly relates to a wear-resistant and corrosion-resistant cemented carbide material and a preparation method thereof. Background Art

[0002] Cemented carbide material is an alloy material made of hard compounds of refractory metals and binding metals through powder metallurgy process. It has many excellent physical and chemical properties and is widely used as tool materials, such as turning tools, milling cutters, planing cutters, drill bits, boring cutters, etc. Cemented carbides in the prior art have poor corrosion resistance and wear resistance, are easily eroded by chemical media, and are prone to wear and fracture under conditions such as heavy load, frequent collision and vibration. In addition, due to the different properties of metal powders during the preparation process of cemented carbide materials in the prior art, it is easy to cause non-uniformity of alloy structure, and thus pores are likely to appear on the cemented carbide materials during the preparation process, which will further affect the wear resistance and corrosion resistance of the hard materials. Considering the above situations, the present application proposes a wear-resistant and corrosion-resistant cemented carbide material and a preparation method thereof. Summary of the Invention

[0003] Based on the technical problems existing in the background art, the present invention proposes a wear-resistant and corrosion-resistant cemented carbide material and a preparation method thereof.

[0004] A wear-resistant and corrosion-resistant cemented carbide material proposed by the present invention includes the following raw material percentages: cobalt 10 - 30%, chromium 10 - 30%, tungsten 10 - 30%, molybdenum 5 - 20%, nickel 5 - 20%, carbon 0.5 - 2%, iron 1 - 3%, titanium 1 - 5%, silicon 1 - 5%, and alloy structure regulating element 2 - 5%.

[0005] Preferably, it includes the following raw material percentages: cobalt 23%, chromium 23%, tungsten 25%, molybdenum 8%, nickel 8%, carbon 1%, iron 2%, titanium 5%, silicon 3%, and alloy structure regulating element 2%.

[0006] Preferably, it includes the following raw material percentages: cobalt 20%, chromium 20%, tungsten 15%, molybdenum 18%, nickel 15%, carbon 1%, iron 2%, titanium 3%, silicon 3%, and alloy structure regulating element 3%.

[0007] Preferably, it includes the following raw material percentages: cobalt 15%, chromium 14%, tungsten 27%, molybdenum 15%, nickel 16%, carbon 1.5%, iron 2.5%, titanium 4%, silicon 2%, and alloy structure regulating element 3%.

[0008] Preferably, the alloy structure regulating element is one or more of vanadium, niobium, boron, manganese, aluminum, and lanthanum. Among them, vanadium is used to refine the grains of the alloy, improve hardness and wear resistance; niobium is used to form carbides and improve the hardness and thermal stability of the alloy; boron is used to form borides and improve the hardness and wear resistance of the alloy; manganese is used to improve the cold workability and impact resistance of the alloy; aluminum is used to form uniformly distributed stabilizing substances and improve the high-temperature strength and oxidation resistance of the alloy material; lanthanum is used to reduce the grain size and improve the mechanical properties and wear resistance of the alloy.

[0009] Preferably, cobalt, chromium, tungsten, molybdenum, titanium, and nickel are the main metal elements of the alloy material, and carbon, iron, and silicon are the additives of the alloy material. Both cobalt and tungsten are used to improve the hardness and anti-wear performance of the alloy material; chromium is used to improve the corrosion resistance and oxidation resistance of the alloy material; molybdenum is used to improve the hardness, corrosion resistance, and strength of the alloy material; titanium is used to improve the strength and corrosion resistance of the alloy material; nickel is used to improve the wear resistance, corrosion resistance, and strength of the alloy material; carbon is used to improve the hardness and anti-wear performance of the alloy material; iron is used to adjust the physical properties of the alloy material; silicon is used to improve the hardness and enhance the wear resistance of the alloy material.

[0010] Preferably, cobalt, chromium, tungsten, molybdenum, titanium, nickel, carbon, iron, silicon, and the alloy structure regulating element are all powdery raw materials that have passed through a 300-mesh sieve.

[0011] The present invention also provides a method for preparing a wear-resistant and corrosion-resistant hard alloy material, which includes the following steps:

[0012] S1: Prepare raw materials of 10-30% cobalt, 10-30% chromium, 10-30% tungsten, 5-20% molybdenum, 5-20% nickel, 0.5-2% carbon, 1-3% iron, 1-5% titanium, 1-5% silicon, and 2-5% alloy structure regulating element for standby, and ensure the purity and quality stability of all raw materials;

[0013] S2: Add 10-30% cobalt, 10-30% chromium, 10-30% tungsten, 5-20% molybdenum, 5-20% nickel, 0.5-2% carbon, 1-3% iron, 1-5% titanium, 1-5% silicon, 0.2-2% vanadium, 0.2-2% niobium, and 0.3-0.5% aluminum into the ball mill tank at the same time, and add hard alloy balls into the ball mill tank for ball milling and mixing to form uniform original alloy powder;

[0014] S3: Put the uniform original alloy powder in S2 and 0.3-0.5% boron and 0.2-1% lanthanum into a high-energy ball mill with a rotation speed of 500-700 rpm / min for preliminary mechanical alloying treatment for 30-50 min to enhance the uniformity and activity of the metal powder;

[0015] S4: Add the mechanically alloyed metal powder in S3 into a vacuum ion furnace at a temperature of 1200 - 1400 °C for melting alloying treatment for 20 - 30 min to further enhance the activity between metal materials;

[0016] S5: Put the material obtained from the melting alloying treatment in S4 into a high-temperature furnace at a temperature of 1400 - 1600 °C for sintering for 2 - 4 h to make the metal powder combine into blocks and form a preliminary alloy block;

[0017] S6: Put the alloy block formed in S5 into a high-energy ball mill for mechanical alloying treatment again for 4 - 6 h to enhance the uniformity and density of the alloy material;

[0018] S7: Put the alloy material treated in S6 into a vacuum high-temperature furnace at a temperature of 1600 - 1800 °C for re-sintering for 4 - 6 h to further improve the density of the material and eliminate the pores existing in the alloy material, thereby obtaining a wear-resistant and corrosion-resistant cemented carbide block material;

[0019] S8: Perform processing procedures such as cutting, grinding, grinding, and ultra-precision machining on the wear-resistant and corrosion-resistant cemented carbide block material obtained in S7 to prepare wear-resistant and corrosion-resistant cemented carbide products of different shapes and specifications.

[0020] Preferably, in S5, the high-temperature furnace is filled with argon to make the inside of the high-temperature furnace an inert atmosphere.

[0021] Compared with the existing technology, the beneficial effects of the present invention are:

[0022] By combining a variety of metal materials and alloy structure adjustment elements, and cooperating with two alloying treatments and two sinterings, the present invention can effectively improve the uniformity and activity of the alloy structure during the production process, reduce the pores in the alloy structure, and at the same time can also effectively improve the corrosion resistance and wear resistance of the cemented carbide material to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a flowchart of a preparation method of a wear-resistant and corrosion-resistant cemented carbide material proposed by the present invention;

[0024] Figure 2 is a curve graph of experimental data comparison in a preparation method of a wear-resistant and corrosion-resistant cemented carbide material proposed by the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The present invention will be further explained below in conjunction with specific embodiments.

[0026] Example 1

[0027] Refer to Figure 1, this embodiment proposes a wear-resistant and corrosion-resistant cemented carbide material, including the following raw material percentages: cobalt 23%, chromium 23%, tungsten 25%, molybdenum 8%, nickel 8%, carbon 1%, iron 2%, titanium 5%, silicon 3%, and alloy structure adjustment element 2%. The alloy structure adjustment element is one or more of vanadium, niobium, boron, manganese, aluminum, and lanthanum. Among them, vanadium is used to refine the grains of the alloy, improving hardness and wear resistance; niobium is used to form carbides, enhancing the hardness and thermal stability of the alloy; boron is used to form borides, increasing the hardness and wear resistance of the alloy; manganese is used to improve the cold workability and impact resistance of the alloy; aluminum is used to form dispersed and stable substances, enhancing the high-temperature strength and oxidation resistance of the alloy material; lanthanum is used to reduce the grain size, improving the mechanical properties and wear resistance of the alloy. Cobalt, chromium, tungsten, molybdenum, titanium, and nickel are the main metal elements of the alloy material, and carbon, iron, and silicon are the additives of the alloy material. Cobalt and tungsten are both used to increase the hardness and anti-wear performance of the alloy material, chromium is used to improve the corrosion resistance and oxidation resistance of the alloy material, molybdenum is used to enhance the hardness, corrosion resistance, and strength of the alloy material, titanium is used to increase the strength and corrosion resistance of the alloy material, nickel is used to improve the wear resistance, corrosion resistance, and strength of the alloy material, carbon is used to increase the hardness and anti-wear performance of the alloy material, iron is used to adjust the physical properties of the alloy material, silicon is used to increase the hardness and enhance the wear resistance of the alloy material, and cobalt, chromium, tungsten, molybdenum, titanium, nickel, carbon, iron, silicon, and the alloy structure adjustment element are all powdery raw materials that have passed through a 300-mesh sieve;

[0028] Its preparation method includes the following steps:

[0029] S1: Prepare the raw materials of 23% cobalt, 23% chromium, 25% tungsten, 8% molybdenum, 8% nickel, 1% carbon, 2% iron, 5% titanium, 3% silicon, and 2% alloy structure adjustment element for standby, and ensure the purity and quality stability of all raw materials;

[0030] S2: Add 23% cobalt, 23% chromium, 25% tungsten, 8% molybdenum, 8% nickel, 1% carbon, 2% iron, 5% titanium, 3% silicon, 0.5% vanadium, 0.2% niobium, and 0.3% aluminum into the ball mill tank at the same time, and add cemented carbide balls into the ball mill tank to carry out ball milling and mixing to form uniform original alloy powder;

[0031] S3: Put the uniform original alloy powder in S2 and 0.5% boron and 0.5% lanthanum into a high-energy ball mill with a rotation speed of 500 rpm / min at the same time for preliminary mechanical alloying treatment for 30 min to enhance the uniformity and activity of the metal powder;

[0032] S4: Add the metal powder after mechanical alloying treatment in S3 into a vacuum ion furnace at a temperature of 1200 °C for melting alloying treatment for 20 min to further enhance the activity between metal materials;

[0033] S5: Put the materials processed by melting alloying in S4 into a high-temperature furnace at 1400 °C for sintering for 2 h to make the metal powder combine into blocks, forming a preliminary alloy block. Argon is filled inside the high-temperature furnace to make the inside of the high-temperature furnace an inert atmosphere;

[0034] S6: Put the alloy block formed in S5 into a high-energy ball mill for mechanical alloying treatment again for 4 h to enhance the uniformity and density of the alloy material;

[0035] S7: Put the alloy material processed in S6 into a vacuum high-temperature furnace at 1600 °C for re-sintering for 4 h to further improve the density of the material and eliminate the pores existing in the alloy material, thereby obtaining a wear-resistant and corrosion-resistant cemented carbide block material;

[0036] S8: Perform processing procedures such as cutting, grinding, grinding, and ultra-precision machining on the cemented carbide block material obtained in S7 to prepare wear-resistant and corrosion-resistant cemented carbide products of different shapes and specifications, and the corrosion resistance and wear resistance of the obtained cemented carbide material are significantly improved.

[0037] Example 2

[0038] Refer to Figure 1 , this example proposes a wear-resistant and corrosion-resistant cemented carbide material, including the following raw material percentages: cobalt 20%, chromium 20%, tungsten 15%, molybdenum 18%, nickel 15%, carbon 1%, iron 2%, titanium 3%, silicon 3% and alloy structure adjustment element 3%. The alloy structure adjustment element is one or more of vanadium, niobium, boron, manganese, aluminum, and lanthanum. Among them, vanadium is used to refine the grains of the alloy and improve hardness and wear resistance; niobium is used to form carbides and improve the hardness and thermal stability of the alloy; boron is used to form borides and improve the hardness and wear resistance of the alloy; manganese is used to improve the cold workability and impact resistance of the alloy; aluminum is used to form a dispersed and stable substance to improve the high-temperature strength and oxidation resistance of the alloy material; lanthanum is used to reduce the grain size and improve the mechanical properties and wear resistance of the alloy. Cobalt, chromium, tungsten, molybdenum, titanium, and nickel are the main metal elements of the alloy material, carbon, iron, and silicon are the additives of the alloy material. Cobalt and tungsten are both used to improve the hardness and anti-wear performance of the alloy material, chromium is used to improve the corrosion resistance and oxidation resistance of the alloy material, molybdenum is used to improve the hardness, corrosion resistance, and strength of the alloy material, titanium is used to improve the strength and corrosion resistance of the alloy material, nickel is used to improve the wear resistance, corrosion resistance, and strength of the alloy material, carbon is used to improve the hardness and anti-wear performance of the alloy material, iron is used to adjust the physical properties of the alloy material, silicon is used to improve the hardness of the alloy material and enhance wear resistance, and cobalt, chromium, tungsten, molybdenum, titanium, nickel, carbon, iron, silicon, and alloy structure adjustment element are all powdery raw materials that have passed through a 300-mesh sieve;

[0039] The preparation method comprises the following steps:

[0040] S1: Prepare raw materials of 20% cobalt, 20% chromium, 15% tungsten, 18% molybdenum, 15% nickel, 1% carbon, 2% iron, 3% titanium, 3% silicon and 3% alloy structure adjusting elements for standby, and ensure the purity and quality stability of all raw materials;

[0041] S2: Add 20% cobalt, 20% chromium, 25% tungsten, 18% molybdenum, 15% nickel, 1% carbon, 2% iron, 3% titanium, 3% silicon, 0.2% vanadium, 0.8% niobium and 0.5% aluminum into a ball milling tank simultaneously, and add cemented carbide balls into the ball milling tank to carry out ball milling and mixing to form uniform original alloy powder;

[0042] S3: Put the uniform original alloy powder in S2 and 0.5% boron and 1% lanthanum into a high-energy ball mill with a rotation speed of 600 rpm / min for preliminary mechanical alloying treatment for 40 min to enhance the uniformity and activity of the metal powder;

[0043] S4: Add the metal powder after mechanical alloying treatment in S3 into a vacuum ion furnace at a temperature of 1300 °C for melting alloying treatment for 25 min to further enhance the activity between metal materials;

[0044] S5: Put the material after melting alloying treatment in S4 into a high-temperature furnace at a temperature of 1500 °C for sintering for 3 h to make the metal powder combine into blocks to form a preliminary alloy block, wherein the inside of the high-temperature furnace is filled with argon to make the inside of the high-temperature furnace an inert atmosphere;

[0045] S6: Put the alloy block formed in S5 into a high-energy ball mill for mechanical alloying treatment again for 5 h to enhance the uniformity and density of the alloy material;

[0046] S7: Put the alloy material after treatment in S6 into a vacuum high-temperature furnace at a temperature of 1700 °C for re-sintering for 5 h to further improve the density of the material and eliminate the pores existing in the alloy material, thereby obtaining a wear-resistant and corrosion-resistant cemented carbide block material;

[0047] S8: Carry out processing procedures such as cutting, grinding, grinding and ultra-precision machining on the wear-resistant and corrosion-resistant cemented carbide block material obtained in S7 to prepare wear-resistant and corrosion-resistant cemented carbide products with different shapes and specifications, and the corrosion resistance and wear resistance of the obtained cemented carbide material are significantly improved.

[0048] Example Three

[0049] Refer to Figure 1, this embodiment proposes a wear-resistant and corrosion-resistant cemented carbide material, including the following raw material percentages: cobalt 15%, chromium 14%, tungsten 27%, molybdenum 15%, nickel 16%, carbon 1.5%, iron 2.5%, titanium 4%, silicon 2%, and alloy structure regulating element 3%. Among them, the alloy structure regulating element is one or more of vanadium, niobium, boron, manganese, aluminum, and lanthanum. Vanadium is used to refine the grains of the alloy, improving hardness and wear resistance; niobium is used to form carbides, enhancing the hardness and thermal stability of the alloy; boron is used to form borides, increasing the hardness and wear resistance of the alloy; manganese is used to improve the cold workability and impact resistance of the alloy; aluminum is used to form dispersed and stable substances, enhancing the high-temperature strength and oxidation resistance of the alloy material; lanthanum is used to reduce the grain size, improving the mechanical properties and wear resistance of the alloy. Cobalt, chromium, tungsten, molybdenum, titanium, and nickel are the main metal elements of the alloy material, and carbon, iron, and silicon are the additives of the alloy material. Both cobalt and tungsten are used to increase the hardness and anti-wear performance of the alloy material, chromium is used to improve the corrosion resistance and oxidation resistance of the alloy material, molybdenum is used to increase the hardness, corrosion resistance, and strength of the alloy material, titanium is used to enhance the strength and corrosion resistance of the alloy material, nickel is used to improve the wear resistance, corrosion resistance, and strength of the alloy material, carbon is used to increase the hardness and anti-wear performance of the alloy material, iron is used to adjust the physical properties of the alloy material, and silicon is used to increase the hardness and enhance the wear resistance of the alloy material. Moreover, cobalt, chromium, tungsten, molybdenum, titanium, nickel, carbon, iron, silicon, and alloy structure regulating element are all powdery raw materials that have passed through a 300-mesh sieve;

[0050] Its preparation method includes the following steps:

[0051] S1: Prepare the raw materials of 15% cobalt, 14% chromium, 27% tungsten, 15% molybdenum, 16% nickel, 1.5% carbon, 2.5% iron, 4% titanium, 2% silicon, and 3% alloy structure regulating element for standby, and ensure the purity and quality stability of all raw materials;

[0052] S2: Add 15% cobalt, 14% chromium, 27% tungsten, 15% molybdenum, 16% nickel, 1.5% carbon, 2.5% iron, 4% titanium, 2% silicon, 2% vanadium, 0.2% niobium, and 0.3% aluminum into the ball mill tank at the same time, and add cemented carbide balls into the ball mill tank to carry out ball milling and mixing to form uniform original alloy powder;

[0053] S3: Put the uniform original alloy powder in S2 and 0.3% boron and 0.2% lanthanum into a high-energy ball mill with a rotation speed of 700 rpm / min at the same time for preliminary mechanical alloying treatment for 50 min to enhance the uniformity and activity of the metal powder;

[0054] S4: Add the mechanically alloyed metal powder in S3 into a vacuum ion furnace at a temperature of 1400 °C for smelting alloying treatment for 30 min to further enhance the activity between metal materials;

[0055] S5: Put the material subjected to smelting alloying treatment in S4 into a high-temperature furnace at a temperature of 1600 °C for sintering for 4 h to make the metal powder combine into a block, forming a preliminary alloy block, wherein the inside of the high-temperature furnace is filled with argon to make the inside of the high-temperature furnace an inert atmosphere;

[0056] S6: Put the alloy block formed in S5 into a high-energy ball mill for mechanical alloying treatment again for 6 h to enhance the uniformity and density of the alloy material;

[0057] S7: Put the alloy material treated in S6 into a vacuum high-temperature furnace at a temperature of 1800 °C for re-sintering for 6 h to further improve the density of the material and eliminate the pores existing in the alloy material, thereby obtaining a wear-resistant and corrosion-resistant cemented carbide block material;

[0058] S8: Perform processing procedures such as cutting, grinding, grinding, and ultra-precision machining on the wear-resistant and corrosion-resistant cemented carbide block material obtained in S7 to prepare wear-resistant and corrosion-resistant cemented carbide products of different shapes and specifications, and the corrosion resistance and wear resistance of the obtained cemented carbide material are significantly improved.

[0059] For the wear-resistant and corrosion-resistant cemented carbide materials prepared in Examples 1 to 3, compared with conventional cemented carbide materials, the experimental data are shown in the following table:

[0060]

[0061]

[0062] As can be seen from the above table, the corrosion resistance, wear resistance, and uniformity of the alloy structure of the wear-resistant and corrosion-resistant cemented carbide material proposed by the present invention are all significantly improved, the amount of pores on the cemented carbide material is significantly reduced, and Example 2 is the best example.

[0063] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A wear-resistant and corrosion-resistant cemented carbide material, characterized in that, It includes the following raw material percentages: cobalt 10 - 30%, chromium 10 - 30%, tungsten 10 - 30%, molybdenum 5 - 20%, nickel 5 - 20%, carbon 0.5 - 2%, iron 1 - 3%, titanium 1 - 5%, silicon 1 - 5%, and alloy structure regulating element 2 - 5%.

2. A wear-resistant and corrosion-resistant cemented carbide material according to claim 1, characterized in that, It includes the following raw material percentages: cobalt 23%, chromium 23%, tungsten 25%, molybdenum 8%, nickel 8%, carbon 1%, iron 2%, titanium 5%, silicon 3%, and alloy structure regulating element 2%.

3. A wear-resistant and corrosion-resistant cemented carbide material according to claim 1, characterized in that, It includes the following raw material percentages: cobalt 20%, chromium 20%, tungsten 15%, molybdenum 18%, nickel 15%, carbon 1%, iron 2%, titanium 3%, silicon 3%, and alloy structure regulating element 3%.

4. A wear-resistant and corrosion-resistant cemented carbide material according to claim 1, characterized in that, It includes the following raw material percentages: cobalt 15%, chromium 14%, tungsten 27%, molybdenum 15%, nickel 16%, carbon 1.5%, iron 2.5%, titanium 4%, silicon 2%, and alloy structure regulating element 3%.

5. A wear-resistant and corrosion-resistant cemented carbide material according to claim 1, characterized in that, The alloy structure regulating element is one or more of vanadium, niobium, boron, manganese, aluminum, and lanthanum. Among them, vanadium is used to refine the grains of the alloy and improve hardness and wear resistance; niobium is used to form carbides and improve the hardness and thermal stability of the alloy; boron is used to form borides and improve the hardness and wear resistance of the alloy; manganese is used to improve the cold workability and impact resistance of the alloy; aluminum is used to form uniformly distributed stabilizing substances and improve the high-temperature strength and oxidation resistance of the alloy material; lanthanum is used to reduce the grain size and improve the mechanical properties and wear resistance of the alloy.

6. A wear-resistant and corrosion-resistant cemented carbide material according to claim 1, characterized in that, The cobalt, chromium, tungsten, molybdenum, titanium, and nickel are the main metal elements of the alloy material, and carbon, iron, and silicon are the additives of the alloy material. Both cobalt and tungsten are used to improve the hardness and anti-wear performance of the alloy material; chromium is used to improve the corrosion resistance and oxidation resistance of the alloy material; molybdenum is used to improve the hardness, corrosion resistance, and strength of the alloy material; titanium is used to improve the strength and corrosion resistance of the alloy material; nickel is used to improve the wear resistance, corrosion resistance, and strength of the alloy material; carbon is used to improve the hardness and anti-wear performance of the alloy material; iron is used to adjust the physical properties of the alloy material; silicon is used to improve the hardness and enhance the wear resistance of the alloy material.

7. A wear-resistant and corrosion-resistant cemented carbide material according to claim 1, characterized in that, The cobalt, chromium, tungsten, molybdenum, titanium, nickel, carbon, iron, silicon, and alloy structure regulating element are all powdery raw materials that have passed through a 300-mesh sieve.

8. A preparation method of a wear-resistant and corrosion-resistant cemented carbide material, characterized in that, It includes the following steps: S1: Prepare raw materials of 10 - 30% cobalt, 10 - 30% chromium, 10 - 30% tungsten, 5 - 20% molybdenum, 5 - 20% nickel, 0.5 - 2% carbon, 1 - 3% iron, 1 - 5% titanium, 1 - 5% silicon, and 2 - 5% alloy structure regulating element for standby, and ensure the purity and quality stability of all raw materials; S2: Simultaneously add 10 - 30% cobalt, 10 - 30% chromium, 10 - 30% tungsten, 5 - 20% molybdenum, 5 - 20% nickel, 0.5 - 2% carbon, 1 - 3% iron, 1 - 5% titanium, 1 - 5% silicon, 0.2 - 2% vanadium, 0.2 - 2% niobium, and 0.3 - 0.5% aluminum into the ball mill tank, and add cemented carbide balls into the ball mill tank for ball milling and mixing to form uniform raw alloy powder; S3: Simultaneously put the uniform raw alloy powder in S2, 0.3 - 0.5% boron, and 0.2 - 1% lanthanum into a high-energy ball mill with a rotation speed of 500 - 700 rpm / min for preliminary mechanical alloying treatment for 30 - 50 min; S4: Add the metal powder after mechanical alloying treatment in S3 into a vacuum ion furnace at a temperature of 1200 - 1400 °C for melting alloying treatment for 20 - 30 min; S5: Put the material after melting alloying treatment in S4 into a high-temperature furnace at a temperature of 1400 - 1600 °C for sintering for 2 - 4 h to make the metal powder combine into a block, forming a preliminary alloy block; S6: Put the alloy block formed in S5 into a high-energy ball mill for mechanical alloying treatment again for 4 - 6 h; S7: Put the alloy material after treatment in S6 into a vacuum high-temperature furnace at a temperature of 1600 - 1800 °C for re-sintering for 4 - 6 h to further improve the density of the material and eliminate the pores existing in the alloy material, thereby obtaining a wear-resistant and corrosion-resistant cemented carbide block material; S8: Perform processing procedures such as cutting, grinding, grinding, and ultra-precision machining on the wear-resistant and corrosion-resistant cemented carbide block material obtained in S7 to prepare wear-resistant and corrosion-resistant cemented carbide products of different shapes and specifications.

9. The preparation method of a wear-resistant and corrosion-resistant cemented carbide material according to claim 8, characterized in that, In the above S5, the high-temperature furnace is filled with argon to make the inside of the high-temperature furnace an inert atmosphere.

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