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Composite degassing tube

A technology for degassing pipes and gas supply pipes, applied in the field of degassing pipes, can solve the problems of limited life, easy breakage and wear of a single refractory material, and achieve the effects of light weight, less waste residue and long life

Inactive Publication Date: 2014-10-08
PYROTECK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these refractory materials are also quite fragile, prone to cracking and wear
Therefore, the life of a single refractory is limited

Method used

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  • Composite degassing tube
  • Composite degassing tube
  • Composite degassing tube

Examples

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Embodiment Construction

[0014] Disclosed is a degassing tube at least partially made of composite material. As used herein, "degassing tube" refers to any device for degassing a molten metal. In certain embodiments, a combination of composite material and phosphate refractory material is used to form the corresponding portion of the diffuser body of the degassing tube. The embodiments disclosed herein are illustrated by reference to the example of degassing molten aluminum for aluminum casting, but are not limited thereto. It should be understood, however, that the degassing tubes described herein may be used for other suitable purposes, such as ingot casting with other types of metal, or metal treatment in general, regardless of the purpose.

[0015] figure 1 A schematic perspective view of an embodiment of a degassing tube according to embodiments disclosed herein is shown. The degassing tube 100 may have any geometry suitable for degassing molten metal, such as molten aluminum. figure 1 The il...

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Abstract

Disclosed is a degassing tube formed, at least partially, of a composite material and configured to degas molten metal. The degassing tube may include a supply tube configured to deliver gas received from a supply source to an outlet of the degassing tube, and a diffuser body coupled to the supply tube and formed, at least partially, of a composite material. In some embodiments, a combination of the composite material and a phosphate bonded refractory material may be used to form respective sections of the diffuser body. The composite material may include layers of a woven fiber reinforcing fabric embedded within a ceramic matrix. In some embodiments, the phosphate bonded refractory material is a castable monolithic refractory which chemically bonds to the composite material.

Description

technical field [0001] The present invention relates to a degassing tube configured for use in a metal foundry, and more particularly to a degassing tube made at least partially of composite material. Background technique [0002] Processing molten aluminum often requires treating the molten aluminum to remove unwanted gases naturally dissolved in the molten metal, especially at the temperatures at which molten aluminum is typically processed. For example, hydrogen dissolves significantly in molten aluminum due to the combustion of natural gas or oil in holding furnaces and / or exposure to ambient humidity. Due to the reduced solubility of hydrogen as the metal solidifies, this dissolved hydrogen is released as the aluminum solidifies, which can create undesirable void defects in cast parts, such as warping and spalling in thin-section profiles, and blisters. [0003] The introduction of inert or inert gases into molten aluminum is known to effectively treat the molten metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/05C22B21/06
CPCF27D3/16
Inventor 卡洛斯·纪伯伦桑切斯·托雷斯李·安德鲁·尼尔松
Owner PYROTECK INC