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A method of degassing for the preparation of buffer material blocks

A technology of buffer material and exhaust method, which is applied in manufacturing tools, ceramic molding machines, etc., can solve the problems of high pressure, affecting the development of buffer materials, and difficult to discharge powder gas.

Active Publication Date: 2021-05-18
BEIJING RES INST OF URANIUM GEOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when preparing large blocks of cushioning materials, due to the large volume of powder, short pressing time and high pressure, it is difficult to discharge the gas in the powder in time, and the compressed block contains high-pressure air bubbles, which leads to the failure of the finished block in storage. Cracks appeared during the process, which affected the long-term performance test of the cushioning material

Method used

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  • A method of degassing for the preparation of buffer material blocks
  • A method of degassing for the preparation of buffer material blocks
  • A method of degassing for the preparation of buffer material blocks

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and embodiment the present invention is further introduced:

[0033] A venting method for preparing a cushioning material block. The venting device for preparing a cushioning material block includes a venting hole 1, a punch 2, a die 3, bentonite powder 4, a press plate 5, a screw 6, a filter Rod 7 and sealing ring 8, described method comprises the following steps:

[0034] Step 1, layout of vent holes;

[0035] Step 2, exhaust device processing;

[0036] Step 3. Vent installation;

[0037] Step 4, exhaust and maintenance.

[0038] Described step 1 comprises the following steps:

[0039] Step 1.1, according to the shape and size of the punch 2, considering the side seam effect, a vent hole 1 is arranged in the center of the mold;

[0040] Step 1.2, taking the center of the short side as the axis symmetry, in consideration of the range and effect of the exhaust, arrange an exhaust hole 1 in the center of each part of th...

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Abstract

The invention belongs to the technical field of buffer material block preparation, and in particular relates to an exhaust method for buffer material block preparation that ensures the pressing quality of the block; the exhaust device for buffer material block preparation includes an air vent (1), a punch (2), die (3), bentonite powder (4), press bearing plate (5); screw rod (6), filter rod (7) and sealing ring (8), wherein, described method comprises the following steps Step 1, exhaust hole layout; Step 2, exhaust device processing; Step 3, exhaust hole installation; Step 4, exhaust and maintenance; the beneficial effects of the present invention are: (1) a buffer provided by the present invention The exhaust method for the preparation of material blocks can effectively block the discharge of bentonite powder while realizing the exhaust function, and improve the pressing quality and efficiency; (2) the exhaust method for the preparation of a buffer material block provided by the invention, which The material of the exhaust device is the same as that of the pressing mold, which can effectively prevent the potential corrosion of the metal and increase the service life.

Description

technical field [0001] The invention belongs to the technical field of buffer material block preparation, and in particular relates to an exhaust method for buffer material block preparation. Background technique [0002] In the study of geological disposal of high-level radioactive waste, the buffer material is an important part of the multiple barrier system in the repository, and it is usually wrapped around the waste tank in the form of block stacking. As the last artificial barrier between the waste tank and the geological body, it plays an important role in engineering barrier, hydraulic barrier, chemical barrier, conduction and dissipation of radioactive decay heat. Therefore, in the process of long-term performance research of indoor model test and field test of cushioning materials, it is necessary to prepare large compacted blocks of cushioning materials. [0003] According to the existing test equipment and technical level, the buffer material block is usually pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B7/44B28B7/00
Inventor 刘月妙曹胜飞谢敬礼马利科
Owner BEIJING RES INST OF URANIUM GEOLOGY
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