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Cutting tool prepared from cubic crystalline boron nitride ultrahigh pressure sintering material
The invention provides a cutting tool prepared from a cubic crystalline boron nitride ultrahigh pressure sintering material, and the cutting tool exhibits excellent defect resistance in steel and cast-iron cutting. The cutting tool prepared from the cubic crystalline boron nitride ultrahigh pressure sintering material comprises, by volume, 50-85%, preferably 70-85%, of cubic crystalline boron nitride particles, with the balance mainly being aluminum oxide. When the detection is carried out on the cross section of the cubic crystalline boron nitride ultrahigh pressure sintering material, the total area of cubic crystalline boron nitride particles swarms accounts for higher than 10% and lower than 35% of the total area of the cubic crystalline boron nitride particles, the area of the cubic crystalline boron nitride particles swarms is larger more than 2.5 times of the average area of the cubic crystalline boron nitride particles, and the average area can be obtained through the calculation on the average particle size of the cubic crystalline boron nitride particles, so that the defect resistance is improved.
Cutting tool prepared from cubic crystalline boron nitride ultrahigh pressure sintering material
The invention provides a cutting tool prepared from a cubic crystalline boron nitride ultrahigh pressure sintering material, and the cutting tool exhibits excellent defect resistance in steel and cast-iron cutting. The cutting tool prepared from the cubic crystalline boron nitride ultrahigh pressure sintering material comprises, by volume, 50-85%, preferably 70-85%, of cubic crystalline boron nitride particles, with the balance mainly being aluminum oxide. When the detection is carried out on the cross section of the cubic crystalline boron nitride ultrahigh pressure sintering material, the total area of cubic crystalline boron nitride particles swarms accounts for higher than 10% and lower than 35% of the total area of the cubic crystalline boron nitride particles, the area of the cubic crystalline boron nitride particles swarms is larger more than 2.5 times of the average area of the cubic crystalline boron nitride particles, and the average area can be obtained through the calculation on the average particle size of the cubic crystalline boron nitride particles, so that the defect resistance is improved.
Cutting tool prepared from cubic crystalline boron nitride ultrahigh pressure sintering material
YOSUKE MIYASHITA (author) / MASAHIRO YANO (author) / TADAKAZU OHASHI (author)
2015-09-30
Patent
Electronic Resource
English
CUTTING TOOL MADE OF CUBIC CRYSTAL BORON NITRIDE BASED ULTRAHIGH PRESSURE SINTERED MATERIAL
| European Patent Office | 2015
| European Patent Office | 2022