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4tpi nipple graphite electrode and nipple uhp 450
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Meo Machinery Co.LTD
China - Hangzhou
Manufacturing and trade
Trade Capacity
Export Percentage
0-30%
Nearest Port
Shanghai
Accepted Delivery Terms
Employees
501-1000 people
Accepted Payment Currency
USD,EUR,JPY
Average Lead Time
90 Day(s)
Certifications
Product Specifications
--Product Description
Product Description
Graphite electrode is made of petroleum coke and imported needle coke. It is widely used in electric arc furnace and refining furnace. It is suitable for producing alloy steel and other metal and nonmetallic materials. Varieties: ordinary power, high power, quasi ultra-high power (non-national standard), ultra-high power graphite electrode, specification Φ 300- Φ 600, this product has low resistivity, good conductivity and thermal conductivity, good oxidation resistance, strong thermal shock resistance and mechanical vibration resistance, High mechanical strength, high mechanical processing strength and other characteristics.
Special Warning:
1.Properties Unit:mm
Item | Unit | Norminal Diameter | ||||||||||||
UHP | HP | RP | ||||||||||||
≤400mm | ≥450mm | ≤400mm | ≥450mm | ≤300mm | ≥350mm | |||||||||
Resistance | E | μ Ω .m | ≤5.5 | ≤6.5 | ≤8.5 | |||||||||
N | ≤4.5 | ≤5.5 | ≤6.5 | |||||||||||
Bending Strength | E | MPa | ≥11.0 | ≥10.5 | ≥9.8 | ≥8.5 | ≥7.0 | |||||||
N | ≥20.0 | ≥16.0 | ≥15.0 | |||||||||||
Elastic Modulus | E | GPa | ≤14.0 | ≤12.0 | ≤9.3 | |||||||||
N | ≤18.0 | ≤16.0 | ≤14.0 | |||||||||||
Bulk Density | E | g/cm3 | ≥1.66 | ≥1.67 | ≥1.62 | ≥1.60 | ≥1.53 | ≥1.52 | ||||||
N | ≥1.75 | ≥1.73 | ≥1.69 | |||||||||||
CTE (100-600℃) | E | 10-6/℃ | ≤1.5 | ≤2.4 | ≤2.9 | |||||||||
N | ≤1.4 | ≤2.2 | ≤2.8 | |||||||||||
Ash | % | ≤0.3 | ≤0.3 | ≤0.5 | ||||||||||
Note:The above data for your reference.
2.Suggested Current Capacity and Current Density Unit:mm
Norminal | RP | HP | UHP | ||||||
mm | Current load A | Current Density A/cm2 | Current load A | Current Density A/cm2 | Current load A | Current Density A/cm2 | |||
200 | 5000-6900 | 15-21 | 5500-9000 | 18-25 | |||||
250 | 7000-10000 | 14-20 | 8000-13000 | 18-25 | 9200-15100 | 21-30 | |||
300 | 10000-13000 | 14-18 | 13000-17400 | 17-24 | 13000-22000 | 20-30 | |||
350 | 13500-18000 | 14-18 | 17400-24000 | 17-24 | 20000-30000 | 20-30 | |||
400 | 18000-23500 | 14-18 | 21000-32000 | 16-24 | 25000-40000 | 19-30 | |||
450 | 22000-27000 | 13-17 | 25000-40000 | 15-24 | 32000-45000 | 19-27 | |||
500 | 25000-32000 | 13-16 | 30000-48000 | 15-24 | 38000-55000 | 18-27 | |||
550 | 32000-40000 | 13-16 | 37000-57000 | 15-23 | 48000-60000 | 18-24 | |||
600 | 38000-47000 | 13-16 | 44000-67000 | 15-23 | 52000-72000 | 18-24 | |||
700 | 45000-54000 | 13-16 | 54000-73000 | 15-23 | 62000-95000 | 18-24 | |||
3.Product Flow
Step 1.raw material
Raw material adopt High quality imported needle coke
Step 2 Crushing and preportioning
After crushing and screening in the mechanical equipment the needle coke preportioning as per formula.
Step 3 Mixing
The raw material after proportioning will be mixed with a proper portion of coal tar and heated to make it become paste with plasticity.
Step 4 Forming
The paste after cooled to the process temperature will enter into the pressing machine and forming as per the product specification.
Step 5 Baking
In the baking furnace,the green electrode will be baked to the specified temperature as per the process requirement.
Step 6 Pitch impregnation
Then impregnated by coal tar as per specific prpcess to improve the electrode density and mechanical strength then baking again to improve electrode performance.
Step 7 Graphitizing
The product after baking will be heated to 3000℃ inthe graphitization furnace,it’s carbon atom structure will rearrange to specific crystalline form.
Applications
The main uses of graphite electrodes are as follows:
(1) for electric arc steelmaking furnace. Graphite electrodes for steelmaking account for about 70-80% of the total amount of graphite electrodes.
(2) used in mine electric furnace. Graphite electrode thermoelectric furnace is mainly used to produce ferroalloy, pure silicon, yellow phosphorus, matte and calcium carbide.
(3) used in resistance furnace. For resistance furnace production and processing of graphite products, glass melting and production of silicon carbide and so on.
The Laboratory
Programmable properties
1.Good electrical conductivity
2.High resistance to thermal shock
3.High mechanical strength
Packing & Delivery
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