Novel TiC-based high-wear-resistance composite material and preparation method thereof

Abstract

The invention discloses a novel TiC-based high-wear-resistance composite material and a manufacturing method thereof, and relates to the technical field of wear-resistant alloy, the novel TiC-based high-wear-resistance composite material comprises the following raw materials by weight: 50-90 wt% of multi-element solid solution strengthened TiC-N i-Ta-Nb-Mo-V-Cr powder, 0.1-3.0 wt% of reduced molybdenum powder, 5.0-13.0 wt% of 70 ferromanganese powder, 0.1-3.0 wt% of reduced Ni powder, 0.1-3.0 wt% of carbon black, and the balance of iron powder. According to the TiC-based high-wear-resistance composite material manufactured through the scheme, multiple raw materials are combined to form multi-element solid solution strengthening, complete development of crystal grains can be promoted, the technical indexes of compactness, strength, hardness, toughness, impact resistance, wear resistance and the like of the crystal grains can be improved, and the defects that an existing TiC-based alloy is low in hardness, low in strength, poor in toughness, high in porosity, prone to abrasion, poor in wear resistance and the like are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of wear-resistant alloys, and in particular to a novel TiC-based highly wear-resistant composite material and a preparation method thereof. Background Art

[0002] Materials are the milestone of human civilization and the important material basis for human survival and development. It is the use, discovery and invention of materials that have enabled humans to step out of the chaotic and ignorant era in the struggle with nature and develop to today's highly developed science and technology.

[0003] Wear-resistant materials are the core of the new material field, and play an important role in promoting and supporting the development of high-tech. In the global new material research field, wear-resistant materials account for about 85%. With the advent of the information society, special wear-resistant composite materials play an important role in promoting and supporting the development of high-tech. They are key materials in the high-tech fields of information, biology, energy, environmental protection, space, etc. in the 21st century. They have become the focus of research and development in the field of new materials in various countries around the world, and are also the hotspot of strategic competition in the development of high-tech in various countries around the world.

[0004] Following metal and organic polymer materials, TiC-based high wear-resistant alloy special wear-resistant composite materials are entering all walks of life with their excellent performance, various varieties and wide applications. Their rapid development and great role have attracted worldwide attention.

[0005] TiC-based high wear-resistant alloy special wear-resistant composite material is a new type of composite material, which is developed on the basis of TiC-based metal ceramics and steel-bonded cemented carbide. It has a series of excellent comprehensive properties such as high hardness, high wear resistance, high degree of work hardening, high rigidity, elastic modulus and bending strength, corrosion resistance, etc. It has replaced cemented carbide wear-resistant materials in a certain range, which can not only promote the upgrading of cemented carbide materials in my country, but also has important significance in improving the national resource security.

[0006] TiC-based high wear-resistant alloy special wear-resistant composite materials were introduced in 1931. In 1956, Ford Motor Company of the United States found that adding molybdenum to titanium carbide-nickel-based cermets could improve the wettability of nickel to titanium carbide, greatly improve the alloy strength, improve the room temperature and high temperature mechanical properties of cermets, and also greatly improve the high temperature corrosion resistance and oxidation resistance of cermets. Therefore, titanium-based alloy wear-resistant composite materials are highly valued at home and abroad, and in-depth and systematic research has been carried out, which has achieved rapid development. Cemented carbide manufacturers in various countries have successively launched a series of titanium-based alloy wear-resistant composite materials.

[0007] With the development of powder metallurgy technology, the evolution of components tends to be stable, sintering technology is constantly updated, and TiC-based high wear-resistant alloy special wear-resistant composite materials have developed to a relatively mature stage. In Japan, in recent years, TiC-based high wear-resistant alloy special wear-resistant composite materials have accounted for 40% of wear-resistant materials. my country also developed a variety of TiC-based high wear-resistant alloy special wear-resistant composite materials during 1991-1995, and some of the products on the market have unstable performance. Zhuzhou Cemented Carbide Group Co., Ltd., Huazhong University of Science and Technology and many other enterprises and research institutes have increased their research efforts and made great progress, but there is still a certain gap with the international advanced level.

[0008] The existing TiC-based alloy has a hardness of only 80HRC, an impact value of only 4.0-5.0J / m2, a bending strength of less than 1500MPa, a porosity of ≤A06B04, and has defects such as easy wear and poor wear resistance. Casting in mining accessories made of high manganese steel and high chromium cast iron can only increase the service life by 0.5-1 times. Therefore, we propose a new type of TiC-based high wear-resistant composite material and its preparation method. Summary of the invention

[0009] The purpose of the present invention is to solve the problems that the existing TiC-based alloy has a hardness of only 80HRC, an impact value of only 4.0-5.0J / m2, a bending strength of less than 1500MPa, a porosity of ≤A06B04, and is easy to wear and has poor wear resistance. The service life can only be increased by 0.5-1 times when cast in mining accessories of high manganese steel and high chromium cast iron. The present invention provides a new TiC-based high wear-resistant composite material and a preparation method thereof.

[0010] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0011] A novel TiC-based high-wear-resistant composite material comprises raw materials in the following weight proportions: 50-90wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 0.1-3.0wt% of reduced molybdenum powder, 5.0-13.0wt% of 70 ferromanganese powder, 0.1-3.0wt% of reduced Ni powder and 0.1-3.0wt% of carbon black.

[0012] Furthermore, the TiC-based high wear-resistant composite material includes the following raw materials in the following weight proportions: 78wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 3.0wt% of reduced molybdenum powder, 13.0wt% of 70 ferromanganese powder, 3.0wt% of reduced Ni powder and 3.0wt% of carbon black.

[0013] Furthermore, the TiC-based high wear-resistant composite material includes the following raw materials in weight proportion: 85wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 2wt% of reduced molybdenum powder, 9wt% of 70ferromanganese powder, 2wt% of reduced Ni powder and 2wt% of carbon black.

[0014] Furthermore, the TiC-based high wear-resistant composite material includes the following raw materials in the following weight proportions: 90wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 1wt% of reduced molybdenum powder, 5wt% of 70ferromanganese powder, 1wt% of reduced Ni powder and 3wt% of carbon black.

[0015] Furthermore, the raw material of the TiC-based high wear-resistant composite material requires that the powder purity is greater than 99.5% and the average particle size is less than 5 microns.

[0016] A method for preparing a novel TiC-based highly wear-resistant composite material comprises the following steps:

[0017] S1. Mixing ingredients: weigh and mix the raw materials of the TiC-based high wear-resistant composite material according to the ratio of 50-90wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 0.1-3.0wt% of reduced molybdenum powder, 5.0-13.0wt% of 70 ferromanganese powder, 0.1-3.0wt% of reduced Ni powder and 0.1-3.0wt% of carbon black;

[0018] S2, compression molding, the mixed material is granulated with glue and then compressed;

[0019] S3, solid solution strengthening sintering, the pressed semi-finished product is subjected to vacuum pressure sintering;

[0020] S4, surface treatment, removal of adhesives from the surface;

[0021] S5. Product inspection and packaging: Products are sent for analysis and testing, and qualified products are packaged and shipped out.

[0022] Furthermore, the materials in S1 are mixed in a wet grinder, the weight of each batch of processed materials is 100-200 kg, and the mixing time is 48-96 hours.

[0023] Furthermore, the pressing process of the pressing molding in S2 adopts die pressing, 200 tons of pressure, and holding pressure for 5-10s, and the sintering temperature in S3 is 1400-1550°C.

[0024] Furthermore, the products in S5 are packaged in iron barrels. Each barrel of products should be accompanied by a certificate of conformity or quality certificate, which should indicate: product name, specifications, batch number, quantity, inspection date, inspector number; the outer packaging should indicate: product name, specifications, net weight, company name, and company address.

[0025] Furthermore, the raw materials of the TiC-based high wear-resistant composite material are multi-component solid solution strengthened

[0026] TiC-Ni-Ta-Nb-Mo-V-Cr powder is made by mixing TiO2 powder, VC powder, (Ta, Nb)C powder, molybdenum powder, chromium powder and carbon black, undergoing solid solution strengthening sintering and then crushing and screening.

[0027] The beneficial effects of the present invention are as follows:

[0028] The TiC-based high wear-resistant composite material produced by the scheme of the present invention combines multiple raw materials to form multi-component solid solution strengthening, which can not only promote the complete development of grains, but also improve its density and technical indicators such as strength, hardness, toughness, impact resistance, and wear resistance, solving the defects of existing TiC-based alloys such as low hardness, low strength, poor toughness, high porosity, easy wear, and poor wear resistance. By carefully selecting raw materials, using unique formula ingredients, and through multi-component solid solution strengthening technology production process, a TiC-based high wear-resistant alloy special wear-resistant composite material with the characteristics of dense organization, low density, high hardness, high strength, good toughness, high wear resistance, and long service life can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a production flow chart of the novel TiC-based highly wear-resistant composite material of the present invention. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] See also Figure 1 The present invention provides a novel TiC-based high wear-resistant composite material, which comprises the following raw materials in weight proportion: 50-90wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 0.1-3.0wt% of reduced molybdenum powder, 5.0-13.0wt% of 70 ferromanganese powder, 0.1-3.0wt% of reduced Ni powder and 0.1-3.0wt% of carbon black.

[0032] In this embodiment, preferably, the TiC-based high wear-resistant composite material includes raw materials in the following weight proportions: 78wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 3.0wt% of reduced molybdenum powder, 13.0wt% of 70 ferromanganese powder, 3.0wt% of reduced Ni powder and 3.0wt% of carbon black.

[0033] In this embodiment, preferably, the TiC-based high wear-resistant composite material includes raw materials in the following weight proportions: 85wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 2wt% of reduced molybdenum powder, 9wt% of 70ferromanganese powder, 2wt% of reduced Ni powder and 2wt% of carbon black.

[0034] In this embodiment, preferably, the TiC-based high wear-resistant composite material includes raw materials in the following weight proportions: 90wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 1wt% of reduced molybdenum powder, 5wt% of 70ferromanganese powder, 1wt% of reduced Ni powder and 3wt% of carbon black.

[0035] In this embodiment, preferably, the raw material of the TiC-based high wear-resistant composite material requires a powder purity greater than 99.5% and an average particle size less than 5 microns.

[0036] A method for preparing a novel TiC-based highly wear-resistant composite material comprises the following steps:

[0037] S1. Mixing ingredients: weigh and mix the raw materials of the TiC-based high wear-resistant composite material according to the ratio of 50-90wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 0.1-3.0wt% of reduced molybdenum powder, 5.0-13.0wt% of 70 ferromanganese powder, 0.1-3.0wt% of reduced Ni powder and 0.1-3.0wt% of carbon black;

[0038] S2, compression molding, the mixed material is granulated with glue and then compressed;

[0039] S3, solid solution strengthening sintering, the pressed semi-finished product is subjected to vacuum pressure sintering;

[0040] S4, surface treatment, removal of adhesives from the surface;

[0041] S5. Product inspection and packaging: Products are sent for analysis and testing, and qualified products are packaged and shipped out.

[0042] In this embodiment, preferably, the materials in S1 are mixed in a wet grinder, the weight of each batch of processed materials is 100-200 kg, and the mixing time is 48-96 hours.

[0043] In this embodiment, preferably, the pressing process of the pressing molding in S2 adopts die pressing, 200 tons of pressure, and holding pressure for 5-10s, and the sintering temperature in S3 is 1400-1550°C.

[0044] In this embodiment, preferably, the product in S5 is packaged in an iron barrel, and each barrel of product should be accompanied by a certificate of conformity or quality certificate, which should indicate: product name, specification, batch number, quantity, inspection date, inspector number, and the outer packaging should indicate: product name, specification, net weight, company name, and company address.

[0045] In this embodiment, preferably, the multi-solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder in the raw material of the TiC-based high wear-resistant composite material is prepared by mixing TiO2 powder, VC powder, (Ta, Nb)C powder, molybdenum powder, chromium powder and carbon black, performing solid solution strengthening sintering and then crushing and screening.

[0046] The TiC-based high wear-resistant alloy special wear-resistant composite material produced by the present invention has the following characteristics:

[0047] The excellent properties of high hardness, high strength, good toughness and high wear resistance are as follows:

[0048] Hardness: 90-95HRA Impact value: 8.0-10.0J / m2

[0049] Flexural strength: 1800-2000MPa Porosity ≤A02B00

[0050] The hardness is 90-95HRA, which is 10-15HRA higher than the TiC-based alloys on the market. The impact value is 8.0-10.0J / m2, which is 4.0-6.0J / m2 higher than the TiC-based alloys on the market. The bending strength is 1800-2000MPa, which is 400-500MPa higher than the TiC-based alloys on the market. The porosity is ≤A02B00, which is one level higher than the TiC-based alloys on the market.

[0051] The TiC-based high wear-resistant composite material produced by the scheme of the present invention combines multiple raw materials to form a multi-component solid solution strengthening, which can not only promote the complete development of grains, but also improve its density and technical indicators such as strength, hardness, toughness, impact resistance, and wear resistance, solving the defects of the existing TiC-based alloys such as low hardness, low strength, poor toughness, high porosity, easy wear, and poor wear resistance. By selecting raw materials, using unique formula ingredients, and through the multi-component solid solution strengthening technology production process, a TiC-based high wear-resistant alloy special wear-resistant composite material with the characteristics of dense organization, low density, high hardness, high strength, good toughness, high wear resistance, and long service life can be obtained. It is applied to hammer crusher hammers, jaw crusher jaws, cone crushing wall rolling mortar walls, impact crusher plate hammers, and roller crusher grinding rollers of hammer crushers, covering a wide range of wear-resistant material application fields. The TiC-based high wear-resistant alloy special wear-resistant composite material of the present invention is cast in mining accessories of high manganese steel and high chromium cast iron, and the service life can be increased by 3-10 times.

[0052] China has rich mineral resources of nonferrous metals and rare metals. For a long time, China has been dependent on imports for high-end materials and can only export primary products. The practice of the past year has proved that the technical route of this achievement is advanced, and it has achieved low-cost and high-efficiency industrialization, which is suitable for China's national conditions. It has changed the situation that China mainly exports raw materials and low-end products. The production process of TiC-based high-wear-resistant alloy special wear-resistant composite materials is innovative and novel. The successful development of this product not only fills a domestic gap, but also exports and earns foreign exchange, which is of great significance to the development of my country's high-tech industry.

[0053] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new type of TiC-based highly wear-resistant composite material, characterized by: The TiC-based high wear-resistant composite material comprises the following raw materials in weight proportion: 50-90wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 0.1-3.0wt% of reduced molybdenum powder, 5.0-13.0wt% of 70 ferromanganese powder, 0.1-3.0wt% of reduced Ni powder and 0.1-3.0wt% of carbon black.

2. A novel TiC-based highly wear-resistant composite material according to claim 1, characterized in that: The TiC-based high wear-resistant composite material comprises the following raw materials in weight proportion: multi-component solid solution strengthening TiC-Ni-Ta-Nb-Mo-V-Cr powder 78wt%, reduced molybdenum powder 3.0wt%, 70 ferromanganese powder 13.0wt%, reduced Ni powder 3.0wt% and carbon black 3.0wt%.

3. A novel TiC-based highly wear-resistant composite material according to claim 1, characterized in that: The TiC-based high wear-resistant composite material comprises the following raw materials in weight proportion: multi-component solid solution strengthening TiC-Ni-Ta-Nb-Mo-V-Cr powder 85wt%, reduced molybdenum powder 2wt%, 70 ferromanganese powder 9wt%, reduced Ni powder 2wt% and carbon black 2wt%.

4. A novel TiC-based highly wear-resistant composite material according to claim 1, characterized in that: The TiC-based high wear-resistant composite material comprises the following raw materials in weight proportion: multi-component solid solution strengthening TiC-Ni-Ta-Nb-Mo-V-Cr powder 90wt%, reduced molybdenum powder 1wt%, 70 ferromanganese powder 5wt%, reduced Ni powder 1wt% and carbon black 3wt%.

5. The novel TiC-based highly wear-resistant composite material according to claim 1, characterized in that: The raw material of the TiC-based high wear-resistant composite material requires that the powder purity is greater than 99.5% and the average particle size is less than 5 microns.

6. A method for preparing a novel TiC-based highly wear-resistant composite material, characterized in that: It includes the following steps: S1. Mix the ingredients. The raw materials of the TiC-based high wear-resistant composite material are prepared according to the following conditions: 50-90wt% of multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder, 0.1-3.0wt% of reduced molybdenum powder, 5.0-70wt% of ferromanganese powder, Weigh and mix 13.0wt%, 0.1-3.0wt% of reduced Ni powder and 0.1-3.0wt% of carbon black; S2, compression molding, the mixed material is granulated with glue and then compressed; S3, solid solution strengthening sintering, vacuum pressure sintering the pressed semi-finished product; S4, surface treatment, removal of adhesives from the surface; S5. Product inspection and packaging: Products are sent for analysis and testing, and qualified products are packaged and shipped out.

7. The method for preparing a novel TiC-based highly wear-resistant composite material according to claim 6, characterized in that: The materials in S1 are mixed in a wet grinder, the weight of each batch of processed materials is 100-200 kg, and the mixing time is 48-96 hours.

8. The method for preparing a novel TiC-based highly wear-resistant composite material according to claim 7, characterized in that: The pressing process of the pressing molding in S2 adopts die pressing, 200 tons of pressure, and holding pressure for 5-10 seconds. The sintering temperature in S3 is 1400-1550°C.

9. The method for preparing a novel TiC-based highly wear-resistant composite material according to claim 8, characterized in that: The products in S5 are packaged in iron barrels. Each barrel of products should be accompanied by a certificate of conformity or quality certificate, which should indicate: product name, specifications, batch number, quantity, inspection date, inspector number; the outer packaging should indicate: product name, specifications, net weight, company name, and company address.

10. The method for preparing a novel TiC-based highly wear-resistant composite material according to claim 9, characterized in that: The multi-component solid solution strengthened TiC-Ni-Ta-Nb-Mo-V-Cr powder in the raw material of the TiC-based high wear-resistant composite material is prepared by mixing TiO2 powder, VC powder, (Ta, Nb)C powder, molybdenum powder, chromium powder and carbon black, solid solution strengthened sintering and then crushing and screening.

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