Oxidation-Resistant and Abrasion-Resistant Graphite Rotors and Vanes for Aluminum Alloy Smelting

• Customization: Available
• Application Area: Aluminum Alloy Smelting
• Feature: High-Thermal Conductivity
• Model NO.: LT-1
• Manufacturing Technique: Vacuum Pressure Infiltration
• Specifications: 1000 Mesh
• Purity: Fixed Carbon Content 99.996%
• Impurities: Ash Content ≤ 50 Ppm
• Density: High Density
• Fixed Carbon Content: ≥ 99.99%
• Ash Content: ≤ 5 Ppm
• Impeller Diameter: 85-350 mm
• Rotor Diameter: 70-250 mm
• Transport Package: Cartons in Wooden Cases
• Specification: personalized customized
• Trademark: L. T graphite
• Origin: Cn
• HS Code: 3801909000
• Production Capacity: 50000/Month

Product Description

 

Product Description

 

Graphite rotors and vanes are mechanical components made of high-purity graphite. They are primarily used in aluminum melt purification and rotary jet degassing processes. Rotation breaks inert gas into bubbles, which absorb hydrogen and oxide inclusions from the molten aluminum, thereby improving the purity of the aluminum alloy.

1. Material: High-purity graphite (Graphite HK series), with a particle size of 6-8 microns, a bulk density of 1.85 g/cm³, and a compressive strength of 125 MPa.

2. Oxidation Resistance: Select models feature an anti-oxidation coating, ensuring a service life of 55-65 days at 700°C and 25-35 days at 1000°C.
 

 

Applications

1. Metallurgical Industry
Primarily used for degassing and purification in aluminum alloy smelting. High-speed rotation breaks inert gas into micron-sized bubbles, adsorbing hydrogen and oxide inclusions from the molten aluminum, thereby improving the mechanical properties of castings. This product is primarily used in high-temperature applications such as molten aluminum degassing and purification, polysilicon casting furnaces, and industrial heat exchange equipment. The speed (up to 700 rpm) and temperature resistance must be tailored to the specific equipment parameters.

2. Chemical Industry
Suitable for use in highly acidic and alkaline corrosive environments, such as reactors and agitators. It is heat-resistant (1000°C) and non-reactive with corrosive liquids.

3. New Energy Industry
In photovoltaic industry polysilicon casting furnaces, it regulates gas flow and heat distribution, improving the crystallization quality of silicon ingots. It also acts as a carrier for negative electrode materials in lithium-ion batteries, optimizing charge and discharge efficiency.

4. Mechanical Industry
Used in conductive components of generators and motors, as well as pump and valve seals and bearing lubrication, reducing mechanical friction and extending service life.

 

Features

 

1. High-Temperature Resistance: Graphite rotor blades maintain stable performance in high-temperature environments, making them suitable for high-temperature industrial equipment.

2. High Conductivity: Excellent electrical conductivity reduces energy loss.

3. High Mechanical Strength: The blade structure is sturdy and can withstand high-speed operation and heavy loads.

4. Oxidation Resistance: The surface can be treated with an anti-oxidation coating, resulting in a service life of up to 50-60 days.

5. Chemical Stability: Highly resistant to corrosion, suitable for a variety of chemical environments.
 

 

Function

 

1. High-Efficiency Operation: As a core component of industrial motors, it improves equipment operating efficiency and stability.

2. Purification Function: During the aluminum liquid degassing process, it removes hydrogen and impurities from the melt through bubble adsorption.

3. Extended Service Life: Surface treatment technology reduces wear and extends the overall life of the equipment.

4. Applications: Widely used in high-speed equipment such as centrifuges, compressors, and pumps, as well as high-temperature processing molds in semiconductor manufacturing.

These characteristics make it a key component in industrial motors, high-speed equipment, and high-temperature processing.

 

Characteristics

1. Rotor Diameter: Commonly ranges from 70mm to 250mm, with impeller diameters from 85mm to 350mm.

2. Structure: The streamlined impeller design reduces rotational resistance and frictional erosion.

3. Temperature Range: Primarily suitable for use in molten aluminum environments around 750°C, with some models capable of withstanding temperatures up to 1000°C.

4. Speed Range: Typically controlled between 200 and 400 rpm, with some industrial applications allowing for up to 700 rpm.

 

Operating specifications

 

A. Service Life

1. Basic Service Life: Uncoated, generally required to last at least one month. After treatment with an anti-oxidation coating, the service life can be extended to 50-60 days.

2. Causes of Failure: High-temperature oxidation (carbon oxidation to CO/CO₂ above 600°C) and mechanical wear are the primary factors.

B. Key Operational Guidelines

1. Preheating Requirements: Before immersion in molten aluminum, preheat at 100mm above the liquid surface for 5-10 minutes to avoid sudden cooling shock.

2. Gas Control: A protective gas (such as argon/nitrogen) must be introduced before immersion. After immersion, the gas supply must be stopped to prevent clogging.