Outer indirect heating diamond synthesis block
A heating and diamond technology, applied in the field of external indirect heating diamond synthesis block, can solve the problems of affecting the stability of diamond, uneven temperature of synthesis column, uneven growth of diamond, etc., to achieve uniform temperature distribution inside and outside, small volume shrinkage, diamond cost reduction effect
Inactive Publication Date: 2007-08-01
ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT
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Problems solved by technology
There are the following technical problems in diamond synthesis using the above synthesis block: (1) the required current is large, resulting in high energy consumption and high hammer consumption; (2) the temperature of the synthesis column is uneven-high in the center and low in the periphery, resulting in uneven diamond growth; (3) During the reaction process, as the material of the synthesis column changes, the magnitude of the current changes, which affects the stability of diamond growth.
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[0017] As shown in Figure 2, the external indirect heating diamond synthesis block includes a diamond synthesis column 11, a composite conductive heat insulation device 1 is provided at both ends of the synthesis column 11, and a sealing pressure transmission is provided on the outer side of the synthesis column 11 and the composite conductive heat insulation device 1 Between the medium 2, the sealed pressure transmission medium 2 and the composite conductive heat insulation device 1 and the synthetic column 11, there are heating elements 13, heat transfer elements 12 and isolation elements 14 in sequence from outside to inside. The heating element 13 is composed of a graphite round tube 5 and a graphite disc 6 covering both ends of the round tube 5; the heat transfer element 12 is formed by buckling two alkaline earth metal oxide round tubes 9 with one end closed; the isolation element 14 is made of a metal round tube 10 and the metal disc 7 that covers the round tube is forme...
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The out indirect heating diamond synthetic block belongs to diamond synthetic technology field. It includes diamond synthetic volume; the two ends of the synthetic volume are equipped with compound conductive thermally insulated device, the outsides of synthetic volume and compound conductive thermally insulated device are equipped with sealing transmitting-pressure media; and the heating element, heat-transmitting element and isolated element are equipped between sealing transmitting-pressure media, compound conductive thermally insulated device and the synthetic volume from outer to inner sequentially. The compound conductive thermally insulated device includes conductive metallic disk and metallic cylinder which one end is connected with the disk and diameter is smaller, the cylinder is embedded with prefabricated insulating material cylinder, and the periphery of said cylinder is equipped with prefabricated insulating material cylinder closely. The synthetic diamond using the synthetic block in the invention is high in product, the factor of merit is high and cost of production is low.
Description
technical field [0001] The invention belongs to the technical field of diamond synthesis, in particular to an external indirect heating diamond synthesis block. Background technique [0002] The structure of the diamond synthesis block used in the diamond synthesis process is shown in Figure 1, including a diamond synthesis column 11, a composite conductive heat insulation device 1 is provided at both ends of the synthesis column 11, and an embedded The sealing medium cylinder 4 of the pressure transmission medium cylinder 3 is embedded in the inner eaves of the sealing medium cylinder 4 . The heating method of the synthesis block belongs to the direct heating type, and the current passes through the synthesis column 11 itself to generate heat. There are the following technical problems in diamond synthesis using the above synthesis block: (1) the required current is large, resulting in high energy consumption and high hammer consumption; (2) the temperature of the synthesi...
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IPC IPC(8): B01J3/06
Inventor 刘杰王秦生马克键
Owner ZHENGZHOU ARTIFICIAL DIAMOND & PROD ENG TECH RES CENT