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CN-121182239-B - Composite nano coating on surface of diamond saw blade

CN121182239BCN 121182239 BCN121182239 BCN 121182239BCN-121182239-B

Abstract

The application discloses a composite nano coating on the surface of a diamond saw blade, which relates to the technical field of diamond coatings, and comprises a bottom layer and a phosphate composite layer, wherein the raw materials of the bottom layer comprise, by mass, 71-83% of titanium carbide, 15-25% of tungsten carbide and 2-4% of yttrium oxide, the raw materials of the phosphate composite layer comprise, by mass, 5-10% of phosphate binder, 8-14% of aluminum oxide, 10-20% of silicon carbide, 10-20% of cerium doped nano SiO 2 -BNNSs hybrid material, 5-10% of graphene loaded molybdenum disulfide nano particles and the balance of water, the bottom layer is formed by coating the bottom layer on the surface of the diamond saw blade through a laser cladding process, and then the phosphate reinforcing layer material is coated on the bottom layer, so that the composite nano coating on the surface of the diamond saw blade is obtained. The composite nano coating on the surface of the diamond saw blade provided by the application has extremely high temperature resistance and wear resistance.

Inventors

  • HUANG CHONG
  • YANG CHUN
  • Qin Panhong

Assignees

  • 广东韦禾新材料科技有限公司

Dates

Publication Date
20260512
Application Date
20250916

Claims (10)

  1. 1. The composite nano coating on the surface of the diamond saw blade is characterized by comprising a bottom layer and a phosphate composite layer; the bottom layer material comprises, by mass, 71-83% of titanium carbide, 15-25% of tungsten carbide and 2-4% of yttrium oxide; The phosphate composite layer material comprises, by mass, 5-10% of a phosphate binder, 8-14% of alumina, 10-20% of silicon carbide, 10-20% of cerium doped nano SiO2-BNNSs hybrid material, 5-10% of graphene loaded molybdenum disulfide nano particles and the balance of water; and coating a bottom layer material on the surface of the diamond saw blade through a laser cladding process to form a bottom layer, and coating a phosphate composite layer material on the bottom layer to obtain the composite nano coating on the surface of the diamond saw blade.
  2. 2. The composite nano coating on the surface of the diamond saw blade according to claim 1, wherein the raw materials of the bottom layer material comprise 77% of titanium carbide, 20% of tungsten carbide and 3% of yttrium oxide by mass percent.
  3. 3. The composite nano coating on the surface of the diamond saw blade according to claim 1, wherein the phosphate composite layer material comprises, by mass, 8% of a phosphate binder, 11% of aluminum oxide, 15% of silicon carbide, 15% of cerium doped nano SiO 2 -BNNSs hybrid material, 7% of graphene loaded molybdenum disulfide nano particles and 44% of water.
  4. 4. A composite nano-coating for a diamond saw blade surface according to claim 1 or 3, wherein the phosphate binder is aluminum dihydrogen phosphate.
  5. 5. A composite nano coating on the surface of a diamond saw blade according to claim 1 or 3, wherein the cerium doped nano SiO 2 -BNNSs hybrid material is prepared from the following raw materials, by weight, 5-10 parts of hydroxylated boron nitride nano sheet, 0.1-0.5 part of cerium nitrate hexahydrate, 18.6-37.2 parts of tetraethoxysilane, 0.35-0.7 part of 3-aminopropyl triethoxysilane, 2000-3000 parts of ethanol aqueous solution, 200-300 parts of absolute ethanol and 20-40 parts of ethanol/acetic acid mixture.
  6. 6. The method for preparing the composite nano coating on the surface of the diamond saw blade according to claim 5, wherein the preparation method of the cerium doped nano SiO 2 -BNNSs hybrid material comprises the following steps: Dissolving hydroxylated boron nitride nano-sheet in ethanol solution, performing ultrasonic dispersion for 1-1.5h to obtain hydroxylated boron nitride nano-sheet dispersion liquid, adjusting the pH of the hydroxylated boron nitride nano-sheet dispersion liquid to 8-9, adding cerium nitrate hexahydrate, performing ultrasonic dispersion for 30-60min to obtain a composite solution, dissolving ethyl orthosilicate in absolute ethanol to obtain an ethyl orthosilicate solution, dripping the ethyl orthosilicate solution into the composite solution, performing ultrasonic dispersion for 1-2h, stirring at room temperature for 18-24h, dissolving 3-aminopropyl triethoxysilane in ethanol/acetic acid mixture to obtain 3-aminopropyl triethoxysilane, adding the 3-aminopropyl triethoxysilane solution into a reaction system, stirring at room temperature for 6-10h, performing centrifugal treatment to obtain a precipitate, washing the precipitate with absolute ethanol for several times, and performing vacuum drying at 60-70 ℃ for 24-30h to obtain the cerium doped nano SiO 2 -BNNSs hybrid material.
  7. 7. The method for preparing the nano composite coating on the surface of the diamond saw blade according to claim 5, wherein the method for preparing the nano hydroxyl boron nitride sheet comprises the following steps: mixing sulfuric acid and nitric acid according to a mass ratio of 3-4:1 to obtain a mixed acid solution, adding the boron nitride nanosheets into the mixed acid solution, carrying out ultrasonic treatment for 20-40min, then stirring for 5-7h at 120-150 ℃, obtaining a precipitate through centrifugal treatment, washing the precipitate with absolute ethyl alcohol and water for several times, carrying out vacuum drying at 80-90 ℃ for 12-16h, and grinding to obtain the hydroxylated boron nitride nanosheets.
  8. 8. The composite nano coating on the surface of the diamond saw blade according to claim 1 or 3, wherein the graphene-supported molybdenum disulfide nano particles are prepared from the following raw materials, by weight, 0.29-0.57 part of graphene oxide, 100-200 parts of water, 3.5-7.1 parts of ammonium molybdate tetrahydrate, 6.1-12.1 parts of thiourea and 0.038-0.076 part of cetyl trimethyl ammonium bromide.
  9. 9. The method for preparing the graphene-supported molybdenum disulfide nano-particles, as claimed in claim 8, is characterized by comprising the following steps: Adding graphene oxide into water, carrying out ultrasonic treatment on the mixed solution for 2-3 hours to obtain graphene oxide dispersion liquid, sequentially adding ammonium molybdate tetrahydrate, thiourea and cetyltrimethylammonium bromide into the graphene oxide dispersion liquid, carrying out ultrasonic treatment for 1-2 hours to obtain mixed solution, regulating the pH value of the mixed solution to 2-3, heating the mixed solution at 180-220 ℃ for 18-24 hours, centrifuging after heating, washing with absolute ethyl alcohol and water for several times to obtain precursor solution, pre-freezing the prepared graphene/molybdenum disulfide precursor solution in a refrigerator at a temperature below-20 ℃, and then transferring the pre-frozen graphene/molybdenum disulfide precursor solution into a freeze dryer for vacuum freeze drying for 12-16 hours to obtain graphene loaded molybdenum disulfide nano particles.
  10. 10. The composite nano-coating on the surface of a diamond saw blade according to claim 1, wherein the thickness of the bottom layer is 1.2-1.8mm, and the thickness of the phosphate composite layer is 80-150 μm.

Description

Composite nano coating on surface of diamond saw blade Technical Field The application relates to the technical field of diamond coating, in particular to a composite nano coating on the surface of a diamond saw blade. Background Saw blades are tools for cutting materials, with sharp cutting edges at their edges, and are widely used in the construction, wood working, metal working, stone cutting and other industries. Among them, diamond saw blades are favored for their excellent performance. The cutting edge of the saw blade is partially embedded with diamond particles, and the diamond is one of the hardest materials in nature, and has extremely high hardness and wear resistance. Therefore, the diamond saw blade can efficiently cut various hard materials such as stone, concrete, ceramics, metals, and the like. However, although diamond saw blades have excellent hardness and wear resistance, many challenges remain in practical use. In particular, under the extreme conditions of high speed, high temperature and high friction, frictional heating can cause thermal stress of the material, so that the diamond saw blade is worn, deformed and even cracked. These problems not only reduce the cutting efficiency, but may also shorten the service life of the saw blade. Therefore, in order to further improve the wear resistance and thermal stability and prolong the service life, development of a composite nano coating for protecting the surface of a diamond saw blade is needed. Disclosure of Invention In order to provide a high-temperature-resistant and wear-resistant high-performance coating for the surface of a diamond saw blade, the application provides a composite nano coating for the surface of the diamond saw blade. The application provides a composite nano coating on the surface of a diamond saw blade, which adopts the following technical scheme: a composite nano-coating on the surface of a diamond saw blade, wherein the composite nano-coating comprises a bottom layer and a phosphate composite layer; the bottom layer material comprises, by mass, 71-83% of titanium carbide, 15-25% of tungsten carbide and 2-4% of yttrium oxide; The phosphate composite layer material comprises, by mass, 5-10% of a phosphate binder, 8-14% of alumina, 10-20% of silicon carbide, 10-20% of cerium doped nano SiO 2 -BNNSs hybrid material, 5-10% of graphene loaded molybdenum disulfide nano particles and the balance of water; And coating a bottom layer material on the surface of the diamond saw blade through a laser cladding process to form a bottom layer, and coating a phosphate reinforcing layer material on the bottom layer to obtain the composite nano coating on the surface of the diamond saw blade. Preferably, the raw materials of the bottom layer material comprise 77% of titanium carbide, 20% of tungsten carbide and 3% of yttrium oxide in percentage by mass. Preferably, the phosphate composite layer material comprises, by mass, 8% of a phosphate binder, 11% of alumina, 15% of silicon carbide, 15% of cerium doped nano SiO 2 -BNNSs hybrid material, 7% of graphene loaded molybdenum disulfide nano particles and 44% of water. Preferably, the phosphate binder is aluminum dihydrogen phosphate. Preferably, the cerium doped nano SiO 2 -BNNSs hybrid material is prepared from the following raw materials, by weight, 5-10 parts of hydroxylated boron nitride nanosheets, 0.1-0.5 part of cerium nitrate hexahydrate, 18.6-37.2 parts of ethyl orthosilicate, 0.35-0.7 part of 3-aminopropyl triethoxysilane, 2000-3000 parts of ethanol aqueous solution, 200-300 parts of absolute ethanol and 20-40 parts of ethanol/acetic acid mixture. Preferably, the preparation method of the cerium doped nano SiO 2 -BNNSs hybrid material comprises the following steps: Dissolving hydroxylated boron nitride nano-sheet in ethanol solution, performing ultrasonic dispersion for 1-1.5h to obtain hydroxylated boron nitride nano-sheet dispersion liquid, adjusting the pH of the hydroxylated boron nitride nano-sheet dispersion liquid to 8-9, adding cerium nitrate hexahydrate, performing ultrasonic dispersion for 30-60min to obtain a composite solution, dissolving ethyl orthosilicate in absolute ethanol to obtain an ethyl orthosilicate solution, dripping the ethyl orthosilicate solution into the composite solution, performing ultrasonic dispersion for 1-2h, stirring at room temperature for 18-24h, dissolving 3-aminopropyl triethoxysilane in ethanol/acetic acid mixture to obtain 3-aminopropyl triethoxysilane, adding the 3-aminopropyl triethoxysilane solution into a reaction system, stirring at room temperature for 6-10h, performing centrifugal treatment to obtain a precipitate, washing the precipitate with absolute ethanol for several times, and performing vacuum drying at 60-70 ℃ for 24-30h to obtain the cerium doped nano SiO 2 -BNNSs hybrid material. Preferably, the preparation method of the hydroxylation boron nitride nano-sheet comprises the following steps: mixing sulfuric acid and