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Template structure for preparing ordered porous graphite rotor and method for forming by adopting 3D (three-dimensional) technology

A porous graphite and template technology, applied in 3D object support structures, manufacturing tools, additive manufacturing, etc., can solve problems such as precise processing of network structures and poor overall rigidity, and achieve precise control of hole spacing, elimination of thermal stress, and high strength. Effect

Active Publication Date: 2022-05-27
LIUZHOU VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional template method can also prepare a porous network structure with a certain pore volume ratio and mechanical properties, it has the following disadvantages: 1) It is difficult to precisely process graphite rotor nozzles with specific The network structure of pore volume ratio and pore size; 2) poor overall rigidity and other deficiencies

Method used

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  • Template structure for preparing ordered porous graphite rotor and method for forming by adopting 3D (three-dimensional) technology
  • Template structure for preparing ordered porous graphite rotor and method for forming by adopting 3D (three-dimensional) technology
  • Template structure for preparing ordered porous graphite rotor and method for forming by adopting 3D (three-dimensional) technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051]Example 1: A template structure for preparing an ordered porous graphite rotor, comprising a trunk 1, a circular skeleton 2 and a multi-group branch 3, the trunk is composed of a top hollow cylinder 11, a bottom hollow cylinder 13 and N intermediate hollow cylinders 12 sets, N is 2, the top hollow cylinder and the middle hollow cylinder are opened with a large step hole 14, the inner wall of the lower end of the step hole is provided with a positioning convex column 15, the bottom hollow cylinder has an equal diameter hole, The bottom surface of the top hollow cylinder is opened with a semicircle mounting groove for mounting the branches 17, the middle hollow cylinder and the bottom hollow cylinder are composed of an upper small hollow cylinder 18 and a lower large hollow cylinder 19, the upper small hollow cylinder is provided with a positioning concave column 16, the top surface and bottom surface of the lower large hollow cylinder of the middle hollow cylinder and the top...

Embodiment 2

[0054] Example 2: A method of molding the template structure as described in Example 1 using 3D technology, the process combines the design of a large-size fine network structure of the pore, the use of metal materials and 3D technology to form a large-size fine network structure, the use of photosensitive resin C-UV 9400 material and light curing technology to form the template components, to eliminate the subsequent thermal stress in the preparation process of graphite composite materials, which includes the following steps and process conditions thereof:

[0055] Step 1: Select the "axis tree" structure to build a holemaking template

[0056]According to the geometric characteristics such as graphite rotor nozzle size, distribution location, quantity, internal aperture structure, etc., the "shaft tree" structure is preferably used to construct a template for holeming inside the graphite rotor. Thereinto:

[0057] (1) The central ventilation area connected by the graphite rotor ...

Embodiment 3

[0100] Example 3: A method of molding the template structure as described in Example 1 using 3D technology, the basic steps of which are the same as In Example 2, the difference is that:

[0101] In step 2, the preferred nozzle bore diameter is: 0.5 mm.

[0102] In step 3, the preferred pore volume ratio is 0.03.

[0103] In step 4, the basic unit consists of eight thin rods at an angle α = 50° (critical molding angle) at an angle to the horizontal plane

[0104] In step five, the thin rod diameter of the octahedral element d cylin The value is: d cylin = 0.5 mm。 The diameter of the spherical node d sphere = 2.15 mm。

[0105] In step 10, both the annular skeleton and the branches were prepared by powder made of 18Ni300Fe. The principle of selecting the 18Ni300Fe material is the same as the principle of selecting the TC4 material in Example 1.

[0106] In step 12, if the percentage of pore volume obtained Φ ≦ 0.03, return to step 5 and redesign the shaft tree structure until the por...

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Abstract

The invention relates to a template structure for preparing an ordered porous graphite rotor and a method for forming by adopting a 3D (Three-Dimensional) technology. The template structure consists of a trunk, an annular hollow body and a plurality of groups of branches, according to the preparation method for forming the template by adopting the 3D technology, the design of a pore-forming large-size fine network structure is combined, the large-size fine network structure is formed by adopting a metal material and the 3D technology, and a template assembly is formed by adopting a photosensitive resin C-UV 9400 material and a photocuring technology, so that thermal stress in the subsequent graphite composite material preparation process is eliminated. The prepared template structure has high strength, the structure size is adjustable, and the requirement of a graphite rotor for a smaller nozzle aperture can be met.

Description

Technical field [0001] The present invention relates to a metal - resin heterogeneous material coupled large size fine structural parts manufacturing technology field, specifically relates to a template structure for preparing an ordered porous graphite rotor and a method of molding using 3D technology. Background [0002] At present, domestic aluminum processing enterprises mainly use rotary injection process to purify aluminum melt, and the key component of the hydrogen purification device is the graphite rotor. During aluminum alloy refining, the inert gas flows through the through-hole in the center of the graphite shaft into the high-speed rotating graphite rotor nozzle, which is injected into the aluminum melt in the form of small bubbles. During the spiral of the bubble, the partial pressure difference is used to carry the hydrogen and slag in the aluminum melt and float up to the liquid level. After the slag is removed, the purpose of purification can be achieved. In gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/28B29C64/135B29C64/393B30B15/06B33Y10/00B33Y50/02B33Y80/00C22B9/05C22B21/06
CPCB22F10/28B33Y10/00B33Y80/00C22B21/064C22B9/05B29C64/135B29C64/393B33Y50/02B30B15/062Y02P20/10
Inventor 楼华山李宏军陈文勇阙燚彬魏东华陈冬玲陈华关来德莫文锋高茂涛李海安思常红袁双印李骏鹏汤耀年刘光浩
Owner LIUZHOU VOCATIONAL & TECHN COLLEGE
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