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UHP Graphite Electrodes

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Product introduction

Description
Our company's ultra high power Graphite Electrode is produced by imported Conocophillips needle coke, the needle coke proportion reaches more than 80, and the graphitization heat treatment is carried out in the series of graphitization furnace, the graphitization temperature is as high as 2800 ~ 3000°C, so the resistivity is lower, allows through the larger current density, the linear expansion coefficient is smaller, and has excellent thermal shock resistance
Feature
Withstand large currents, high discharge rate.
The same environment, the lowest consumption of tons of steel
Resistant to cracking & spalling.
High resistance to oxidation and thermal shock.
High mechanical strength, low electrical resistance.
High machining accuracy, good surface finishing.
UHP graphite electrode technical specifications
Technical Specification of UHP Graphite Electrodes

 

 

UHP TECHNICAL PARAMETERS
                    (mm)Nominal Diameter           (mm)Nominal Diameter
  Item Unit YB/T4090( Industry Standard)   UHP  (Measured Value) 
    300\400 450\500 550\600 700\800   350\400 450\500   550\650 650\700
Electric Resistivity Electrode μQM ≤6.2 ≤6.3 ≤6.0   ≤5.8 4.5-5.8 4.5-5.8   4.5-5.6 4.5-5.2
Nipple ≤5.3 ≤5.3 ≤4.5   ≤4.3 3.4-3.8 3.4-3.8   3.4-3.8 3.0-3.5
Bulk Density Electrode   g/cm³ ≥1.67 ≥1.66 ≥1.66   ≥1.68   1.73-1.75 1.70-1.73   1.70-1.72 1.70-1.72
Nipple ≥1.74 ≥1.75 ≥1.78   ≥1.78   1.80-1.84 1.80-1.84   1.83-1.87 1.84-1.88
Flexural Strength Electrode MPa ≥10.5 ≥10.5 ≥10.0   ≥10.0   12.0-14.0 12.0-14.0   10.0-14.0 10.0-14.0
Nipple ≥20.0 ≥20.0 ≥22.0   ≥23.0   22.0-26.0 23.0-28.0   23.0-30.0 25.0-30.0
 CTE Electrode    10℃ ≤1.5 ≤1.5 ≤1.5 ≤1.5 1.2-1.4 1.2-1.4   1.2-1.4 1.2-1.4
Nipple

Electrode
≤1.4 ≤1.4 ≤1.3 ≤1.3  1.0-1.2 1.0-1.2   1.0-1.2 1.0-1.2
Elastic Modulus Electrode GPa
≤14.0

≤14.0

≤14.0
≤14.0   10.0-13.0 10.0-13.0  9.0-13.0 9.0-13.0
Nipple ≤20.0 ≤20.0 ≤22.0   ≤22.0   16.0-18.0 16.0-18.0   18.0-20.0 18.0-20.0
  Ash Electrode   % ≤0.5 ≤0.5 ≤0.5   ≤0.5   0.01-0.15 0.01-0.15   0.01-0.15 0.01-0.15
Nipple

 

Nominal Diameter Cross Sectional    Area  YB/T4090 (IndustryStandard) UHP(EnterpriseStandard)
ermissibleCurrent  Load Current Density  (EAF)  (LF)
Permissible
Current Load
CurrentDensity PermissibleCurrent  Load CurrentDensity
in mm     cm²    A     A/cm² A     A/cm² A    A/cm²
14 350   937 20000-30000   20-30  21000-32000   22-32 23000-34000 24-35
16 400   1275 25000-40000   19-30  26000-42000   20-33 28000-46000 22-36
18 450   1622 32000-45000   19-27  33000-49000   20-30 36800-52000 23-32
20 500   2000 38000-55000   18-27  40000-60000   20-30 43000-63000 22-32
22 550   2427 45000-65000   18-27  45000-68000   18-28 45000-69000 18-28
24 600   2892 50000-75000   18-26  52000-81000   18-28 —— ——
28 700   3935 70000-91000   18-23  70000-100000   18-27 —— ——

 

GUIDANCE TO ANALYSIS OF ELECTRODES PROBLEMS
Factors Body Breakage Nipple Breakage Loosening  Tip Spalling  Bolt loss Oxidation Consumption
Nonconductor In Charge          
Heavy Scrap In Charge          
Transformer Capacity Too Large  
Phase   Lmbalance    
Phase Rotation        
Excessive Vibration        
Clamper Pressure Too High Or Too Low        
Roof Electeode Socket Disalignment With Electrode        
Water Sprayed On Eledctrodes Above Roof            
Scrap Preheating            
Secondary Voltage Too High    
Secondary Current Too High  
Power Factor Too Low        
Oil Consumption Too High      
Oxygen Consumption Too High      
Long Time Gap From Tapping To Tapping          
Electrode Dipping          
Dirty Joint          
Poorly Maintained Lift Plug And Tightening Tool        
Lnsufficient Joint Tightening        
Note:△Lndicates Increased Performance.◆ Lndicates Decreased Performance.

 

The company's main products Ordinary Power Graphite Electrode(75mm-1200mm),High Power Graphite Electrode(200mm-700mm), Ultra High-power Graphite Electrode (300mm-700mm), Calcined Petroleum Coke, Graphitized Petroleum Coke, Recarburizer, Graphite Products, Refrigeration Fitting, Steel Parts and other products.

We pay attention to the development of products diversification on the basis of production assurance. We insist on continuous innovation and development from the perspective of customer needs. It has developed into a comprehensive enterprise that can provide different types of products and services needed in many fields. With the continuous progress of technology, our company speeds up technological innovation, strengthens scientific management. To build the enterprise into an international brand with excellent product quality and perfect after-sales service.

Factory

Calcined

Calcined

Profiling

Profiling

Roasting

Roasting

Graphitization

Graphitization

Processing

Processing

Package

Package

Under the company's cooperative enterprises have reached more than 30 and more than 200 employees. Annual comprehensive production capacity of 30,000 tons, products sold in more than 20 provinces and regions, exported to Southeast Asia, Middle East, Europe, the United States and other countries. Since the establishment of the enterprise, we pay attention to the development of products diversification on the basis of production assurance. We insist on continuous innovation and development from the perspective of customer needs. It has developed into a comprehensive enterprise that can provide different types of products and services needed in many fields.

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