Large-cavity segmentation ball type ultra-high pressure equipment

Abstract

The invention discloses large-cavity segmentation ball type ultra-high pressure equipment, belongs to the field of superhard material synthesizing equipment and aims at solving the problems of segmentation ball type ultra-high pressure equipment of small volume of high-pressure cavity, complex assembly, low limit cavity pressure and the like. The large-cavity segmentation ball type ultra-high pressure equipment mainly comprises a top anvil, high-pressure tanks, protective sleeves and a rack, wherein the top anvil is formed by six primary top anvils with a quadrilateral anvil surface or eight primary top anvils with a triangular anvil surface, the bottom of the top anvil is a spheroid curved surface, the top anvil is arranged in the upper and lower hemispheric high-pressure tanks which are additionally provided with elastic sealing package sleeves respectively, the high-pressure tanks are arranged in the left and right protective sleeves respectively, and the large-cavity segmentation ball type ultra-high pressure equipment is formed. According to the large-cavity segmentation ball type ultra-high pressure equipment disclosed by the invention, in order to further increase the limit cavity pressure, a secondary top anvil can be additionally arranged in a cavity enclosed by the primary top anvils, and the amount of the secondary top anvils is six or eight; the cavity pressure of the large-cavity segmentation ball type ultra-high pressure equipment is 25-80 GPa and can be increased by 5-16 times compared with that of the traditional segmentation ball type high-pressure equipment, and the volume of the high-pressure cavity can be increased by 3-5 times.

Description

technical field

[0001] The invention discloses a large-cavity segmented ball type ultra-high pressure equipment, relates to the high-pressure synthesis technology of superhard materials such as diamond and cubic boron nitride and their products, and belongs to the field of superhard material synthesis equipment. Background technique

[0002] Superhard materials such as diamond and cubic boron nitride and their products are widely used in mineral mining, oil drilling, machinery manufacturing, building materials and other industries. At present, my country's diamond output accounts for more than 80% of the world's total output, and the cubic boron nitride (CBN) output accounts for more than 60% of the world's total output. It is already the world's largest producer of superhard materials. However, in terms of high-pressure synthesis of large-size gem-grade diamonds, international leading large-scale group companies such as British Element Six, American Synthetics, Japan's Sumi...

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