Best EDM Graphite Block with Compressive Strength 145 MPa

• Type: Graphite Raw Materials
• Composition: Petroleum Coke and Tar Coke.
• Carbon Content: High-Carbon
• Grade: Industrial Grade
• Forming Way: Isostatic Graphite
• Crystal Morphology: Artificial Graphite
• Model NO.: WHB-10H
• Bulk Density: 1.85g/Cm³
• Compressive Strength: 145MPa
• Electric Resistivity: 14-15
• Flexural Strength: 80MPa
• Shore Hardness: 75hsd
• Porosity: 13%
• Ash: 100ppm
• Transport Package: Standard Export Package
• Specification: SGS
• Trademark: WH
• Origin: China
• HS Code: 2504900000
• Production Capacity: 5000ton/Year

Product Description

SIZE of WHB-10H:     600*500*200mm

Index of the material:  Compressive strength ≥145MPa,       Flexural strength ≥80MPa,         Resistivity:13-14μΩm,    Density≥1.85g/cm3,                            Ash content≤100PPM , ,             Shore hardness≥75HSD

Introduction of EDM
Mold has become the main process equipment of industrial batch production in the fields of home appliances, automobile, mechanical and electrical engineering, aerospace and other industries. It undertakes the processing and production of 60-90% of product parts in these industries. In recent years, high speed milling has broken through the traditional difficult processing of high hardness, high strength, high toughness mold materials. However, edm has high machining precision, high surface quality, wide machining range, especially in the complex, precision, thin wall, narrow gap, high hard material mold cavity machining advantages compared with high-speed milling, so edm will still be the main means of mold cavity machining. As the graphite electrode (compared with copper) has the advantages of less electrode consumption, fast discharge machining speed, good mechanical processing performance, light weight and small thermal expansion coefficient, it gradually replaces the copper electrode and becomes the mainstream of electroprocessing electrode. Compared with copper, graphite electrode has advantages such as less consumption, fast discharge speed, light weight and small thermal expansion coefficient. Therefore, it gradually replaces copper electrode and becomes the mainstream of edm electrode. In contrast, EDM materials have the following advantages:
1. Faster processing speed. In general, the machining speed of graphite is 2-5 times faster than that of copper, and the discharge speed is 3-5 times faster than that of copper.
2. Materials are less prone to deformation and have obvious advantages in the processing of thin reinforcement materials. The softening point of copper is around 1000 degrees, which is prone to deformation due to heating. The sublimation temperature of graphite is 3650 degrees, and the thermal expansion coefficient is only 1/30 of that of copper.
3. Lighter weight. The density of graphite is only 1/5 of that of copper. Large electrode discharge machining can effectively reduce the burden of machine tool (EDM) and is more suitable for the application of large mould.
4. Less discharge consumption. As the spark oil also contains C atoms, the high temperature causes the C atoms in the spark oil to be decomposed during the discharge machining process. In turn, a protective film is formed on the surface of the graphite electrode to compensate for the loss of the graphite electrode

 

 Main products: high purity graphite,Isostatic pressed graphite,  graphite electrode,  flake graphite, , mechanical equipment ,  various processing graphite mould and graphite products.
   


Graphite production process 
  
The company warehouse

    
   Wanhui graphite co., LTD. is the professional manufacturer and exporter for carbon and graphite  products. The company is located in ping dingshan of henan province with a total area of 80,000 square meters. The factory has elegant environment, complete equipment and abundant resources. The company has independent import and export rights, and passed the ISO 9001:2008 national quality management system certification in January 2007, We are committed to providing customers with reliable quality and elegant service.
     
With the high quality and good effect, our products have been exported all over the world, such as Europe and America, Canada, Japan, Germany Middle East and etc. 
We sincerely hope cooperate with you with our exquisite technology, stable good quality and first-class service in the near future.

Website:bestwanhui.en.made-in-china.com      TEL[phone]      FAX:[phone]