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Integral carbon and ceramic composite material rotor used for molten aluminum purification, and production method thereof

A composite material and monolithic technology, which is applied in the field of monolithic carbon-ceramic composite material rotors for aluminum melt purification and its preparation, can solve the problems of low service life of graphite rotors, easy fracture of threaded joints, weak oxidation resistance, etc. Achieve excellent oxidation resistance and corrosion resistance, reduce processing costs, and improve production efficiency

Active Publication Date: 2017-02-01
XIAN CHAOMA SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the graphite material itself has two serious defects: one is that graphite is a brittle material with poor strength and toughness; The service life of graphite rotors is low, so how to improve the service life of graphite rotors has always been one of the important research topics for users in the aluminum refining industry and rotor manufacturers
However, the inherent defects of graphite materials cannot be fundamentally solved
The third is to use other materials (such as C / C-SiC composite materials) for the parts with large local losses, and combine them with the graphite materials at the upper and lower ends through screw connections. This segmented improved graphite rotor has poor concentricity. The problem of easy breakage of threaded joints

Method used

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  • Integral carbon and ceramic composite material rotor used for molten aluminum purification, and production method thereof
  • Integral carbon and ceramic composite material rotor used for molten aluminum purification, and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, the integral carbon-ceramic composite material rotor for aluminum melt purification in this embodiment includes the upper section 1 of the C / C composite material and the lower section 2 of the C / C composite material, and the upper section 1 and the C / C composite material located at the upper section 1 of the C / C composite material. The C / C-SiC composite material section 3 between the composite material lower section 2, the C / C composite material upper section 1, the C / C-SiC composite material section 3 and the C / C composite material lower section 2 are integrated structures.

[0030] The preparation method of the monolithic carbon-ceramic composite material rotor of this embodiment comprises the following steps:

[0031] Step 1. According to the shape and performance requirements of the carbon-ceramic composite rotor to be prepared, use conventional methods to make carbon fibers, carbon cloth and net tires with a density of 0.20g / cm 3 carbon ...

Embodiment 2

[0036] Such as figure 1 As shown, the integral carbon-ceramic composite material rotor for aluminum melt purification in this embodiment includes the upper section 1 of the C / C composite material and the lower section 2 of the C / C composite material, and the upper section 1 and the C / C composite material located at the upper section 1 of the C / C composite material. The C / C-SiC composite material section 3 between the composite material lower section 2, the C / C composite material upper section 1, the C / C-SiC composite material section 3 and the C / C composite material lower section 2 are integrated structures.

[0037] The preparation method of the monolithic carbon-ceramic composite material rotor of this embodiment comprises the following steps:

[0038] Step 1. According to the shape and performance requirements of the carbon-ceramic composite rotor to be prepared, use conventional methods to make carbon fiber, carbon cloth and net tires with a density of 0.40g / cm 3 carbon f...

Embodiment 3

[0043] Such as figure 1 As shown, the integral carbon-ceramic composite material rotor for aluminum melt purification in this embodiment includes the upper section 1 of the C / C composite material and the lower section 2 of the C / C composite material, and the upper section 1 and the C / C composite material located at the upper section 1 of the C / C composite material. The C / C-SiC composite material section 3 between the composite material lower section 2, the C / C composite material upper section 1, the C / C-SiC composite material section 3 and the C / C composite material lower section 2 are integrated structures.

[0044] The preparation method of the monolithic carbon-ceramic composite material rotor of this embodiment comprises the following steps:

[0045] Step 1. According to the shape and performance requirements of the carbon-ceramic composite rotor to be prepared, use carbon fiber, carbon cloth and net tire to make a density of 0.50g / cm by conventional methods. 3 carbon fib...

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Abstract

The invention discloses an integral carbon and ceramic composite material rotor used for molten aluminum purification. The integral carbon and ceramic composite material rotor comprises an upper C / C composite material segment and a lower C / C composite material segment, and a C / C-SiC composite material segment positioned between the upper C / C composite material segment and the lower C / C composite material segment, and the upper C / C composite material segment, the C / C-SiC composite material segment and the lower C / C composite material segment are an integral structure. The invention also discloses a production method of the rotor. Compared with traditional graphite rotors and improved rotors, the rotor using the C / C-SiC composite material to substitute original coating layers or ceramic sleeves has the advantages of fundamental solving of the inherent defects of a graphite rotor material by using the oxidation resistance and the corrosion resistance of a SiC material, and avoiding of the problems of poor concentricity and easiness in fracture of the threaded connection of segmented improved graphite rotors.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal smelting, and in particular relates to an integral carbon-ceramic composite material rotor for purifying aluminum melt and a preparation method thereof. Background technique [0002] The use of rotating rotors to spray inert gas to remove hydrogen and oxide inclusions in molten aluminum is an advanced purification technology for molten aluminum in the world today. Since the technology came out in foreign countries in the 1970s, it has realized the continuous production line of melting and casting. Purification and automation, its advanced and reasonable purification process has brought huge technical and economic benefits to manufacturers. In these online purification systems, the rotor is used to transport the medium gas such as high-purity argon (or nitrogen) to the bottom of the aluminum liquid and stir it. Based on the principle of high-energy diffusion and chemical driving, the hydro...

Claims

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Application Information

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IPC IPC(8): C22B21/06C22B9/05C04B37/00C04B35/83
CPCC04B35/83C04B37/003C04B2235/5248C04B2237/16C04B2237/363C04B2237/385C04B2237/765C04B2237/82C04B2237/84C22B9/05C22B21/064
Inventor 张永辉康文杰赵松彭志刚谷立民赵俊苏君明
Owner XIAN CHAOMA SCI TECH
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