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Device for generating large-cavity ultrahigh hydrostatic pressure

A hydrostatic pressure, large cavity technology, applied in the application of ultra-high pressure process, etc., can solve the problems of low pressure conversion efficiency, high maintenance cost, complex structure, etc., to achieve improved pressure transmission capacity, superior overall performance, and improved The effect of running stability

Inactive Publication Date: 2013-01-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the hinged six-sided press technology, the DIA six-sided top device, the six-sided top press device based on the two-sided top frame, and the two-stage hexa-octahedral large-cavity static high-pressure device need to convert the axial pressure into Pressure in six directions, complex structure, low pressure conversion efficiency, very expensive price, high maintenance cost and other shortcomings. To purchase a set of two-stage hexahedron large-cavity static high-pressure device from abroad, the total cost is about 5 million RMB

Method used

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  • Device for generating large-cavity ultrahigh hydrostatic pressure
  • Device for generating large-cavity ultrahigh hydrostatic pressure
  • Device for generating large-cavity ultrahigh hydrostatic pressure

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Embodiment 1

[0021] The novel device for producing ultra-high hydrostatic pressure of the present invention, its structure is as figure 2 As shown, it is a hexahedral large-cavity ultra-high hydrostatic pressure device with a hinged six-sided pressing mechanism frame. The device includes six anvils 1 (ie top hammers) driven by a six-sided top press and a hexahedron synthetic block 3 for internally containing synthetic materials. In order to make six pressure anvils 1 continue to apply pressure to the composite block 3 after contacting the hexahedron composite block 3, the size ratio of the anvil face size of the pressure anvil 1 and the size ratio of a face of the composite block 3 is preferably 0.7 (the ratio range is between 1 to 0.2).

[0022] ①If the anvil material is WC, the maximum pressure of the high-pressure synthesis chamber can reach 10GPa when the two side lengths of the anvil surface are 6mm;

[0023] ②When the length of two sides of the anvil surface is 4mm, the maximum pr...

Embodiment 2

[0028] See image 3 . image 3 Among them, 1 is an anvil, 5 is a tungsten carbide pad, and 6 is an alloy steel pad.

[0029] Adding a tungsten carbide pad 5 between the original alloy steel pad 6 and the anvil 1 can protect the alloy steel pad 6 from being crushed or indented. Because the diameter of the anvil 1 used in the present invention is relatively small, the pressure acting on the block is very large, which easily destroys the original alloy steel block 6 .

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Abstract

The invention provides a device for generating a large-cavity ultrahigh hydrostatic pressure, belonging to the technical field of super-hard material synthesis equipment. The structure comprises six anvils (1) synchronously driven by a cubic anvil press, steel rings for assembling the six anvils and cushion blocks for transferring pressure, wherein the anvil surface (2) of each anvil has the edgelength of 1-6 mm, and each cushion block is a secondary cushion block comprising an alloy steel cushion block (6) and a tungsten carbide cushion block (5). The device of the invention can generate the conditions with a high temperature of 3000K and a high pressure of 50 GPa, improve the conversion efficiency of pressure intensity, save the costs for design, manufacture and mounting as well as rawmaterials, save energy by shortening the energy transmission process as well as improve the operation stability of the equipment, prolong the service life of the equipment and lighten the workload ofa maintenance staff by reducing the error rate of the equipment.

Description

technical field [0001] The invention belongs to the technical field of a static high pressure device used in superhard material synthesis and high pressure scientific research. Background technique [0002] A high-temperature and high-pressure environment is a necessary condition for the development of artificially synthesized superhard materials such as diamond and cubic boron nitride (cBN), as well as related high-pressure scientific research. Large-cavity static high-pressure device is the main equipment for generating high-temperature and high-pressure environment. The related technology of this device was developed by Bridgman et al. in the last century and has been continuously improved. At present, there are mainly two-sided top and polyhedral high-voltage devices. Among them, the highest pressure generated by the two-sided top device is about 12Gpa; and the polyhedral press device includes a hexahedron pressure chamber device and an octahedron pressure chamber devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/06
Inventor 朱品文何志王欣邹广田刘冰冰崔田
Owner JILIN UNIV
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