Aluminum Degassing Graphite Rotor and Shaft

• Carbon Content: High-Carbon
• Grade: Industrial Grade
• Forming Way: Isostatic Graphite
• Density: 1.72 to 1.85 g/cm3
• Specific Resistance: No More Than 8.5
• Compressive Strenght: 34 MPa Min
• Model NO.: HTLCQ001
• Shape: Cuistomized
• Material: Graphite
• Transport Package: Wooden Case
• Specification: Customized
• Trademark: Hang Carbon
• Origin: Hebei, China
• Production Capacity: 500000 Piece/Pieces Per Month

Product Description

Description
Aluminum degassing graphite rotor is a part of aluminum alloy smelting equipment, which helps remove hydrogen and oxidation residues. Aluminum degassing is a process used in the manufacturing of aluminum alloy. During the aluminum and aluminum alloy smelting process, hydrogen generated by chemical reaction with water vapor diffuses into the molten aluminum, causing internal structural defects in aluminum products. To avoid this defect, most aluminum plants use dissolved gas flotation to purify the molten aluminum by injecting inert gases such as nitrogen and argon into the molten aluminum. As inert gas diffuses and rises, hydrogen is brought to the surface of the molten aluminum.
 

 The aluminum degassing graphite rotor forms bubbles on the contact surface between the molten aluminum and inert gas, and increases the gas-liquid contact area, thereby accelerating the diffusion and removal of hydrogen. At the same time, the aluminum degassing graphite rotor can also adsorb and remove oxidization residues in the molten aluminum, to improve the quality and performance of the aluminum alloy.

Special Treatment

• Impregnation anti-oxidation treatment. To extend the service life of the aluminum degassing graphite rotor and shaft, we need to fill the pores of the graphite material with exclusive technology and nano-antioxidants, and cover the surface of the graphite rotor shaft to improve its anti-oxidation performance.
• Coating anti-oxidation treatment. Except for the threads, exclusive coating materials are applied to the impregnated anti-oxidation graphite rotor and shaft. The coating material does not penetrate into the aluminum, but adheres well to the graphite material. Due to its heat resistance, anti-oxidation, corrosion resistance, and abrasion resistance, the service life of the aluminum degassing graphite rotor and shaft is greatly extended after further coating treatment.

Customers can choose only impregnation anti-oxidation treatment, or only coating anti-oxidation treatment, or both of them.

Features:

• High mechanical strength
• good thermal shock resistance.
• Good chemical stability
• High temperature resistance
• hood corrosion resistance.
• Do not chemically react with aluminum.

Working Principle
The working principle of the aluminum degassing graphite rotor is that the transmission system drives the graphite rotor to rotate, and inert gas (argon or nitrogen) is blown into the aluminum molten liquid through the rotor rod and nozzle. The high-speed rotating graphite rotor disperses the argon or nitrogen entering the aluminum molten liquid into many small bubbles, dispersed in the molten metal. When the bubbles contact each other, the bubbles in the molten liquid absorb hydrogen and oxidization impurities by relying on the gas pressure difference and surface adsorption principle, and are brought out of the molten liquid surface with the rise of the bubbles, thereby purifying the molten liquid.
 

The advantages of our factory:

1. We have many years of experiences in graphite industry, we choose the most proper materials for your application.
2. We have been exporting to customers in Europe, Asia, USA, Canada, Australia and etc.
3. We have many professional CNC machines.
4. We have a wide range of superior materials: isostatic graphite, Vibration Graphite, Extruded graphite, die molded graphite.
5. We have our own graphite material production facility, and enough stocking materials, to provide you a good and stable price.
6. We have professional engineering and technical team, prefessional international trading team to offer you professional services.
 

 

 

 

 
Advanced Equipments: 
 

 

Rigorous quality control procedure:
Initial production inspection
During Production Inspection
Pre-shipment inspection/Final inspection
 

Graphtie Material Property: 

Property (Typical Value)	TSK	GSK	Unit
Apparent Density	≥1.68	≥1.72	g/cm^3
Max Grain Size	≤2	≤0.8	mm
Specific Electrical Resistivity	8-10	≤8.5	μΩm
Flexural Strength	≥12.5	≥15	Mpa
Compressive Strength	≥28	≥35	Mpa
Porosity	≤24	≤20	%
Ash value	≤0.3	≤0.3	%

 

Property (Typical Value)	HTG-4	HTG-5	Unit
Apparent Density	≥1.78	≥1.85	g/cm^3
Max Grain Size	≤43	≤43	µm
Ash value	≤500	≤500	ppm
Specific Electrical Resistivity	≤12	≤10	μΩm
Flexural Strength	≥35	≥40	Mpa
Compressive Strength	≥60	≥70	Mpa
Shore Hardness	≥40	≥45	HSD
Thermal Expansion (room temperature to 600ºC)	≤4.5	≤4.4	10-6/ºC

 

Property (Typical Value)	HTD-5	HTD-6	HTD-7	HTD-8	HTD-9	Unit
Apparent Density	1.85	1.90	1.82	1.90	1.82	g/cm^3
Max Grain Size	13-15	8-10	8-10	8-10		µm
Ash Content	≤500	≤500	≤500	≤500	≤500	ppm
Purified ASH Content	50	50	50	50	50	ppm
Specific Electrical Resistivity	8-10	8-9	11-13	11-13	11-13	μΩm
Flexural Strength	46	55	51	60	59	Mpa
Compressive Strength	85	95	115	135	121	Mpa
Shore Hardness	48	53	65	70	70	HSD
Thermal Expansion (room temperature to 600ºC)	4.75	4.8	5.8	5.85	5.85	10-6/ºC

 
Note: ASH can be purified to 20 to 50 ppm. 



Our Services:

Efficiency: Your einquiry will be replied with 24 hours 

Fast Delivery: Our produciton capability and enough mateiral stocks will make sure fast devevery
Customization: We provided OEM services based on your design and drawings

Design Service: Our professional and experienced enigneers team can disign for you, if you need
Quality and Price: We offer you high quality graphite products with the most competitive price

After-sales Services: Tracking service for feedbacks of our graphite products, and we will be responsilbe for quality problem.  

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