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Segmented carbon-ceramic composite material rotor for purifying aluminum melt and preparation method thereof

A composite material and segmented technology, which is applied in the field of segmented carbon-ceramic composite material rotors for aluminum melt purification and its preparation, can solve the problems of graphite rotors such as low service life, poor strength and toughness, and weak oxidation resistance , to achieve excellent oxidation resistance and corrosion resistance, reduce processing costs and improve production efficiency

Active Publication Date: 2018-06-26
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

Method used

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  • Segmented carbon-ceramic composite material rotor for purifying aluminum melt and preparation method thereof
  • Segmented carbon-ceramic composite material rotor for purifying aluminum melt and preparation method thereof
  • Segmented carbon-ceramic composite material rotor for purifying aluminum melt and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 with figure 2 As shown, the segmented carbon-ceramic composite rotor for aluminum melt purification in this embodiment includes a graphite segment 1 and a composite segment 2, and the graphite segment 1 and the composite segment 2 are threaded; the composite segment 2 Including C / C composite material upper section 2-1 and C / C composite material lower section 2-2, and C / C-SiC located between C / C composite material upper section 2-1 and C / C composite material lower section 2-2 The composite material section 2-3, the C / C composite material upper section 2-1, the C / C-SiC composite material section 2-3 and the C / C composite material lower section 2-2 are of an integrated structure.

[0038] In this embodiment, there is one graphite segment 1 , and the graphite segment 1 is located above the composite segment 2 .

[0039] In this embodiment, the graphite section 1 is provided with external threads, and the composite section 2 is provided with internal thre...

Embodiment 2

[0047] Such as Figure 4 with Figure 5 As shown, the segmented carbon-ceramic composite rotor for aluminum melt purification in this embodiment includes a graphite segment 1 and a composite segment 2, and the graphite segment 1 and the composite segment 2 are threaded; the composite segment 2 Including C / C composite material upper section 2-1 and C / C composite material lower section 2-2, and C / C-SiC located between C / C composite material upper section 2-1 and C / C composite material lower section 2-2 The composite material section 2-3, the C / C composite material upper section 2-1, the C / C-SiC composite material section 2-3 and the C / C composite material lower section 2-2 are of an integrated structure.

[0048] In this embodiment, the number of the graphite segments 1 is two, and the composite segment 2 is located between the two graphite segments 1 .

[0049] In this embodiment, the graphite section 1 is provided with external threads, and the composite section 2 is provide...

Embodiment 3

[0057] Such as Figure 4 with Figure 5 As shown, the structure of the segmented carbon-ceramic composite material rotor for purifying aluminum melt in this embodiment is the same as that in Embodiment 2.

[0058] The preparation method of the segmented carbon-ceramic composite rotor of this embodiment includes the following steps:

[0059] 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 fiber preform, and then the carbon fiber preform is densified to obtain a density of 1.40g / cm 3 C / C composite materials;

[0060] Step 2, machining the C / C composite material described in step 1 into a C / C composite rod 6 with a diameter of 200 mm and a height of 500 mm;

[0061] Step 3, the graphite tooling is set on the middle section of the C / C composite material rod 6 described in step 2, the graphite tooling inclu...

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Abstract

The invention discloses a sectional carbon-ceramic composite material rotor for aluminum melt purification. The sectional carbon-ceramic composite material rotor for aluminum melt purification comprises a graphite section and a composite section, wherein the graphite section and the composite section form a threaded connection; the composite section comprises a C / C composite material upper section, a C / C composite material lower section and a C / C-SiC composite material section positioned between the C / C composite material upper section and the C / C composite material lower section; and the C / C composite material upper section, the C / C-SiC composite material section and the C / C composite material lower section form an integral structure. Besides, the invention also discloses a preparation method of the sectional carbon-ceramic composite material rotor. Compared with the existing graphite rotor, the C / C-SiC composite material is used instead of the original coating or ceramic bushing in the corrosion oxidation region, and the excellent oxidation resistance and corrosion resistance of the SiC material are utilized, thereby basically overcoming the inherent defects in the graphite rotor material.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal smelting, and in particular relates to a segmented carbon-ceramic composite material rotor for purifying aluminum melt and a preparation method thereof. Background technique [0002] The use of rotating rotors to inject inert gas to remove hydrogen and oxide inclusions in molten aluminum is an advanced purification technology for molten aluminum in the world today. Since this technology came out in foreign countries in the 1970s, it has realized continuous casting production on-line 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 hydrogen and oxygen ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B21/06C22B9/05C04B35/83C04B35/573C04B35/622C04B35/65
CPCC04B35/573C04B35/622C04B35/65C04B35/83C22B9/05C22B21/064
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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