Method for preparing polycrystalline cubic boron nitride
A cubic boron nitride and polycrystalline cubic technology, applied in the field of advanced cutting tools, can solve the problems of high pressure required for forming, high sintering temperature, and complicated equipment, and achieve the effect of low cost, low sintering temperature, and simple equipment
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0025] Example 1
[0026] The preparation method of the polycrystalline cubic boron nitride PcBN of the present invention is as follows: weigh 0.6g Al, 0.3g SiO 2 , 0.15g Al 2 O 3 , 0.06g H 3 BO 3 , 0.6g Si 3 N 4 , Mix it uniformly to be the binding agent; then weigh 4.2g cubic boron nitride cBN (see X-ray diffraction pattern figure 1 ), the particle size range is 30-40μm; the binding agent and cBN are placed in a planetary ball mill to mix, the ball-to-battery ratio is 2:1, the ball milling medium is water, the speed is 600 rpm, and the ball milling time is 4 hours; The latter mixture is placed in a drying oven at 60°C for drying; take it out and put it in a mortar, add polyvinyl alcohol PVA as an organic binder, mix evenly, and pass through a 100 mesh screen; weigh 0.5g of the mixture and use a Φ8 mold Forming on the press, the initial pressure is 4MPa, and the pressure holding time is 100 seconds; after the pressure is relieved, the pressure is 8MPa and the pressure is maintai...
Example Embodiment
[0027] Example 2
[0028] The preparation method of polycrystalline cubic boron nitride PcBN in this embodiment is as follows: weigh 1.2g potassium feldspar, 0.42gSi, and 0.18g Si 3 N 4 , And mix it uniformly to obtain the binding agent; then weigh 4.2g cubic boron nitride cBN (see X-ray diffraction pattern figure 1 ), the particle size range is 22~36μm; the prepared binding agent and cBN are mixed in a planetary ball mill, the ball-to-battery ratio is 3:1, the ball milling medium is water, the rotating speed is 600 rpm, and the ball milling time is 8 hours ; Put the ball-milled mixture into a drying oven at 60°C for drying; take it out and put it in a mortar, add PVA as a binder, mix evenly, and pass through a 100-mesh screen; weigh 0.5g of the mixture and place it in a Φ8 mold Press molding, the initial pressure is 4MPa, and the pressure holding time is 100 seconds; after the pressure is relieved, the pressure is 8MPa and the pressure is maintained for 100s; the pressure is rel...
Example Embodiment
[0029] Example 3
[0030] The preparation method of polycrystalline cubic boron nitride PcBN in this embodiment is as follows: weigh 1.2g potassium feldspar, 0.42gSi, and 0.18g Si 3 N 4 , Mix it evenly to obtain the binding agent; then weigh 4.2g of Ti-plated cBN with a particle size range of 30-40μm; put the binding agent and cBN in a planetary ball mill to mix, the ball to material ratio is 4:1, ball mill The medium is water, the rotation speed is 600 rpm, and the ball milling time is 16 hours; put the ball milled mixture into a 60 ℃ drying box for drying; take it out into a mortar, add PVA as a binder, mix well, 100 mesh screen; weigh 0.5g of the mixture, use a Φ8 mold to form on the press, the initial pressure is 4MPa, and the pressure holding time is 100 seconds; after the pressure is relieved, the pressure is 8MPa and the pressure is maintained for 100s; the pressure is relieved and the pressure is 12MPa The pressure is maintained for 100s; the pressure is released and the p...
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap