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Preparation method of ceramic mold material

A technology of ceramic mold and nanocomposite materials, which is applied in the field of preparation of ceramic mold materials, can solve the problems of poor bending strength and fracture toughness, poor comprehensive performance, and large performance differences.

Inactive Publication Date: 2020-10-23
嘉兴市爵拓科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the large difference in performance, the mold materials of different ceramic systems are limited by the use environment, and the bending strength and fracture toughness of traditional ceramic mold materials are not good, resulting in poor overall performance and limitations in use.

Method used

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  • Preparation method of ceramic mold material
  • Preparation method of ceramic mold material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of a ceramic mold material, the steps comprising:

[0033] (1) Preparation of powder for ceramic mold materials

[0034] Dissolve 0.02 parts of asbestos nanopowder in 95% ethanol solution, disperse ultrasonically for 0.5-1 hour to form a slurry, then add 1 part of water-based polyurethane dispersion, stir in a water bath at 55°C for 1.5 hours, filter, and dry in an oven at 65°C 8h, grinding to obtain polyurethane / asbestos nanocomposite powder.

[0035]Grind and mix 50 parts of α-alumina powder, 10 parts of aluminum borate whiskers, 6 parts of tin oxide powder, 3 parts of zirconia bead powder, and 8 parts of polyurethane / asbestos nanocomposite material powder in a grinder, The particle size of α-alumina powder is 45-50nm, the particle size of aluminum borate whisker is 60-75nm, the particle size of tin oxide powder is 50-60nm, and the particle size of zirconia bead powder is 80-90nm , the particle size of the polyurethane / asbestos nanocomposite pow...

Embodiment 2

[0039] A preparation method of a ceramic mold material, the steps comprising:

[0040] (1) Preparation of powder for ceramic mold materials

[0041] Dissolve 0.04 parts of asbestos nanopowder in 95% ethanol solution, ultrasonically disperse for 0.5~1h to form a slurry, then add 3 parts of water-based polyurethane dispersion, stir in a water bath at 55°C for 2h, filter, and dry in an oven at 70°C for 6h and grinding to obtain polyurethane / asbestos nanocomposite powder.

[0042] Grind and mix 61 parts of α-alumina powder, 6 parts of aluminum borate whiskers, 4 parts of tin oxide powder, 5 parts of zirconia bead powder, and 6 parts of polyurethane / asbestos nanocomposite material powder in a grinder, The particle size of α-alumina powder is 40-45nm, the particle size of aluminum borate whisker is 50-60nm, the particle size of tin oxide powder is 65-70nm, and the particle size of zirconia bead powder is 60-70nm 1. The particle size of the polyurethane / asbestos nano-composite mate...

Embodiment 3

[0046] A preparation method of a ceramic mold material, the steps comprising:

[0047] (1) Preparation of powder for ceramic mold materials

[0048] Dissolve 0.03 parts of asbestos nanopowder in 95% ethanol solution, disperse ultrasonically for 0.5-1 hour to form a slurry, then add 2 parts of water-based polyurethane dispersion, stir in a water bath at 60°C for 1.5 hours, filter, and dry in an oven at 75°C 6h, grinding to obtain polyurethane / asbestos nanocomposite powder.

[0049] Grind and mix 64 parts of α-alumina powder, 5 parts of aluminum borate whiskers, 7 parts of tin oxide powder, 4 parts of zirconia bead powder, and 7 parts of polyurethane / asbestos nanocomposite material powder in a grinder, The particle size of α-alumina powder is 35-45nm, the particle size of aluminum borate whisker is 70-80nm, the particle size of tin oxide powder is 75-80nm, and the particle size of zirconia bead powder is 90-100nm 1. The particle size of the polyurethane / asbestos nano-composite...

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Abstract

The invention discloses a preparation method of a ceramic mold material, and belongs to the field of ceramic mold materials. The preparation method comprises the following steps: uniformly mixing a powder for the ceramic mold material with deionized water to prepare a mixed slurry, placing the mixed slurry in a mold, standing, drying, demolding to obtain a ceramic mold material green body, and carrying out high-temperature sintering to obtain the ceramic mold material. The preparation method of the powder for the ceramic mold material comprises the step of uniformly grinding alpha-aluminum oxide powder, aluminum borate whiskers, tin oxide powder, zirconium oxide bead powder and polyurethane / asbestos nano composite material powder under the action of mechanical grinding to obtain the powderfor the ceramic mold material. The powder for the ceramic mold material used in the preparation method is good in dispersity and uniform in particle, and the ceramic mold material which is good in fracture toughness and abrasion resistance, high in strength and high in hardness can be obtained.

Description

technical field [0001] The invention belongs to the field of ceramic mold materials, and in particular relates to a preparation method of ceramic mold materials. Background technique [0002] At present, the materials used in hot work dies are mainly divided into die steel and cemented carbide. Although die steel has high strength, its low hardness and poor wear resistance shorten its service life. The subsequently developed cemented carbide mold material is superior to mold steel in terms of comprehensive mechanical properties and high wear resistance, and its service life is greatly improved. It is widely used in the field of molds. However, the development of productivity requires that molds should have better high-temperature strength and wear resistance, and it is difficult for cemented carbide materials to meet the needs of actual production. Compared with cemented carbide, cermet materials have higher high-temperature strength, wear resistance, corrosion resistance,...

Claims

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Application Information

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IPC IPC(8): C04B35/119C04B35/81C04B35/626C04B35/622
CPCC04B35/119C04B35/622C04B35/6261C04B35/80C04B2235/3244C04B2235/3293C04B2235/5216C04B2235/5454C04B2235/96
Inventor 不公告发明人
Owner 嘉兴市爵拓科技有限公司
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