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Pingdingshan Wanhui Graphite Co., Ltd.
Pingdingshan Wanhui Graphite Co., Ltd.
  • Edm Graphite Block Manufacturer

EDM Graphite Block

EDM graphite blocks are becoming more and more popular among our customers. EDM graphite is a new material. In recent years, with the development of China's industry, remarkable achievements have been made in science and technology. It has become the theme of The Times to create higher quality and lower cost in the field of precision mold industry. Therefore, it has become a new vane to look for newer graphite block material to replace copper electrodes in the industry. Therefore, the demand for EDM graphite blocks from our company is increasing in many EDM manufacturers.

EDM Graphite Blocks Technical Indicators

GradeDensityERThermal (100°C )CTE (- 600°C)Shore Hardness
g/cm3μQmw/m.k10-6/°CHSD
WH-4B1.7813~15.1255.6564
WH-71.811~13855.665
WH-81.911~13855.8570
WH-8S1.911~131156.270
WH-91.8311~131005.870
WH-101.713~14905.651
WH-121.7714~161165.366
WH-10L1.814~161195.8973
WH-1001.9111~131324.6576


GradeFlexural StrengthStrengthPorosityAshPartical Size
MpaMpa%PPMmicron
WH-4B551101350013~15
WH-75111512508~10
WH-86013511508~10
WH-8S7215811505
WH-96513512506~8
WH-103886185013~15
WH-126599171007~9
WH-10L77135141007~9
WH-1008517510506~8


*NOTE:

1. Product performance is an indicator of product center location

2. The porosity is the sum of the open porosity and the closed porosity

3. Updated Date:2021/6/10

EDM Graphite Blocks Dimensions (mm)

WH-4BWH-10WH-7WH-9WH-8WH-8SWH-12WH-10LWH-100
510*310*250550*410*250550*410*2501160*1160*270550*410*250550*410*250550*410*250620*520*250620*520*250600*500*200
510*310*310650*530*250650*530*2101250*650*270650*530*250940*320*320650*530*250900*580*250900*580*250900*580*250
650*520*250940*320*320650*530*2501600*650*310940*320*3201250*650*270940*320*320580*500*200580*500*200
900*580*250
940*320*3201850*600*340







1050*600*3102350*650*320







1080*350*350






EDM Graphite Blocks Technology

  • EDM graphite, now more and more widely used in precision mold processing industry, more than 90% of the mold processing electrode material is graphite. Copper, once the dominant electrode material, has almost lost its advantage over graphite. 


  • Why is that? Because of graphite materials for EDM discharge has great advantage, because the spark oil also contains C atoms, in electro discharge machining, the C atoms are in high temperature makes the spark oil decomposition, thus the surface of the graphite rod electrodes in EDM form a protective film, compensate the loss of graphite electrode, prolong the service life of the graphite electrode.

EDM Graphite Blocks Advantages

  • 01

    Faster processing speed. Under normal circumstances, the mechanical processing speed of the high-purity graphite product can be 2-5 times faster than copper, and the discharge speed is 3-5 times faster than copper.

  • 02

    The material is less prone to deformation and has obvious advantages in the processing of thin reinforcement materials.

  • 03

    Lighter weight. The density of graphite is only 1/5 of copper, which can effectively reduce the burden of machine tools (EDM) when large electrodes are used for discharge machining.

  • 04

    Less discharge consumption. Because spark oil also contains C atoms, during discharge machining, C atoms in spark oil are decomposed by high temperature, which in turn forms a protective film on the surface of graphite electrode to compensate the loss of graphite electrode.

Get In Touch With WH Graphite
Get In Touch With WH Graphite
WH Graphite is an expert in carbon and graphite product manufacturing, providing types of high purity graphite products such as blocks, mold, cruibles, rods, plates and powder. Contact us to learn more about custom graphite products for different applications now!