Model NO. | NX82 | Density | 1.72 |
Name | High Quality Graphite Rotor for Aluminum | Transport Package | Wooden Box |
Specification | customed size | Trademark | NINGHEDA |
Origin | China | HS Code | 3801909000 |
Production Capacity | 20000PCS |
What is graphite
rotor?
The
graphite rotor and graphite impeller are made of
high-purity graphite. The surface is treated with special
anti-oxidation, and the service life is about 3 times that
of ordinary products. It is widely used in aluminum alloy
casting
industry.
The
purification process of liquid aluminum alloy is the main
method to improve the comprehensive performance of aluminum
alloy. In the purification process, the method of mixing
the purification gas and the solvent and spraying the
graphite rotor to the aluminum melt for purification is the
most advanced treatment method in the world. The working
principle of the graphite rotor is: the rotating rotor
breaks the nitrogen (or argon) blown into the aluminum melt
into a large number of dispersed bubbles and disperses them
in the molten metal. Bubbles in the melt rely on the gas
partial pressure difference and the principle of surface
adsorption to absorb hydrogen in the melt, adsorb oxidized
slag, and be taken out of the melt surface as the bubbles
rise, so that the melt can be purified. Because the bubbles
are small and dispersed, they are evenly mixed with the
rotating melt, and then they rotate in a spiral shape to
float slowly. The contact time with the melt is long, and
the air flow generated by continuous linear rise will not
be formed, thereby removing the harmful hydrogen in the
aluminum melt. Improved purification
effect.
Applications of graphite rotor:
1. Reduce the processing cost
2. Reduce the consumption of inert gas
3. Reduce the aluminum content in the slag
4. Reduce labor costs 5. Improve performance, longer
replacement cycle
6. Improve reliability and reduce maintenance
costs.
Why and how to propose a suitable
anti-erosion resistance oxidation treatment program of
graphite rotors?
Because
the specifications of graphite rotors used in each casting
or casting-rolling production line are not the same. First,
the customer provides the original design drawings and
fills in the complete graphite rotor field use
environmental survey form. Then, according to the drawings,
combined with the graphite rotor speed, direction of
rotation and its relative position to the aluminum liquid
level, the technical analysis is carried out, and a
suitable anti-erosion resistance oxidation treatment
program is proposed.
The
graphite rotor rotating nozzle is made of high-purity
graphite. In addition to considering the need to break up
the bubbles, the nozzle structure also uses the centrifugal
force generated by stirring the aluminum alloy melt to make
the melt enter the nozzle and evenly mix with the
horizontally ejected gas to form a gas /The liquid jet is
sprayed to increase the contact area and contact time of
the bubble and the aluminum alloy liquid, and improve the
degassing purification
effect.
The speed
of the graphite rotor can be steplessly adjusted by the
frequency converter speed control, up to 700r/min. The
specification of graphite rotor is Φ70mm~250mm, and the
specification of impeller is Φ85mm~350mm. The high-purity
anti-oxidation graphite rotor has the characteristics of
high strength, high temperature resistance, and aluminum
flow corrosion resistance. In the process of purifying and
degassing, the surface of the aluminum alloy liquid in the
box is covered with nitrogen for protection, so that the
part of the graphite rotor exposed from the aluminum alloy
liquid is in an inert gas to prevent high temperature
oxidation of the rotor and prolong the service life of the
rotor.
The shape of the impeller is streamlined,
which can reduce the resistance during rotation, and the
friction and scouring force between the impeller and the
aluminum alloy liquid is relatively small. So that the
degassing rate is above 50%, shortening the smelting time
and reducing the production
cost.
Company
Profile
Established in
2017, located in Fengxin Industrial Area, Yichun City,
Jiangxi Province, China, Jiangxi Ningheda New Material Co.,
Ltd. is the subsidiary company of Jiangxi Ningxin New
Material Co., Ltd.
Jiangxi Ningxin New Material Co., Ltd. is
an enterprise which specializes in R&D, production and
sale of special graphite. The total investment is RMB 180
million. It covers an area of more than 70000 square meters
and produces 10000 tons of special graphite annually, which
makes Ningxin to be the leading enterprise in the domestic
industry.
On November
8th,
2016, Ningxin was listed of Chinese new third board. The
stock abbreviation is Ningxin New Material, and stock code
is 839719.
Jiangxi Ningheda New Material Co., Ltd. is
mainly engaged in graphite product processing, graphite
product matching service, providing graphite materials,
graphite electrode and graphite products for the lithium
industry, rare earth industry, machinery industry,
aerospace, semiconductor and solar photovoltaic industry,
together with the corresponding products technical service
and technical application of update program.
With excellent
production technology, good customer service, high market
share, and relying on the advantage of new material,
capital and management of parent company (Jiangxi Ningxin
New Material Co., Ltd.), Jiangxi Ningheda New Material Co.,
Ltd. develops quickly. We devote to the extension of the
special graphite industry chain, and make contributions for
building the future whole graphite industry
strategy.
Ningheda Graphite Technical
Characteristic:
Grade | NX601 | NX602 | NX603 | NX604 | NX605 |
Grain Size (≤μm) | 25 | 25 | 25 | 25 | 25 |
Bulk Density (≥g/cm3) | 1.55 | 1.72 | 1.80 | 1.85 | 1.90 |
Compressive Strength (≥MPa) |
35 | 45 | 60 | 65 | 70 |
Flexural Strength (≥MPa) |
15 | 20 | 30 | 33 | 35 |
Porosity (≤%) | 23 | 20 | 17 | 14 | 11 |
Specific Resistance (≤μΩm) |
12 | 12 | 12 | 12 | 12 |
Ash Content (≤%) | 0.08 | 0.07 | 0.06 | 0.05 | 0.03 |
Shore Hardness | 35 | 45 | 50 | 55 | 60 |
Advantages of Ningheda graphite
raw material
1. The processing materials are ultrafine
granule structure, high purity and graphite with high
graphitization degree.
2. High hardness, good anti-oxidation performance and high
machining accuracy
3. Good conductivity, high resistivity, sufficient
mechanical strength
4. Small porosity and dense structure.
5. Excellent thermal shock resistance, conductive and
thermal conductivity.
6. High temperature resistance, corrosion resistance, acid
and alkali resistance, good wear resistance.
7. Surface can be treated with
anti-oxidation.
Why
choose graphite of Jiangxi Ningheda New Material Co.,
Ltd.?
1. Stable
quality, reasonable price, efficient communication, timely
delivery.
2. Many experts with more than 20 years of experience in
graphite industry, we not only provide graphite products,
but also provide application solutions for the
corresponding industry.
3. The companys strength and scale are in a leading
position in China, with emphasis on reputation and
worry-free after-sales.
4. The products sell well in many countries worldwide, with
rich experience in import and export, and complete various
certificates to ensure that the goods reach the customer
smoothly.
5. With professional designers, OEM and ODM are
available.
6. Fast and convenient delivery method, which can guarantee
the timeliness.
High Quality
Graphite Rotor for
Aluminum
For more details, pls
contact Alisa!