EDM Graphite Electrode
EDM graphite
Product features of EDM graphite
In the current industrial field, with the development of economy and technology, the technical requirements for precision molds are getting higher and higher, so EDM, or electrospark machining, has received unprecedented attention in the processing of these precision molds, and has received high attention from the industry in the selection of EDM materials.
EDM graphite features
Stable and reasonable price
The price of graphite material is only 15% of the copper electrode of the same volume. At present, graphite has become a popular material for EDM applications. In comparison, graphite material has a lower cost and is more stable.
Easier cutting
Graphite has excellent machining properties. The machining speed of graphite electrodes is 2-3 times more than that of copper electrodes. At the same time, there is no need to worry about burrs after graphite machining.
Low thermal expansion coefficient
The melting point of copper is 1080℃, while that of graphite is 3650℃. The CTE of graphite is only 1/30 of copper. It is very stable even under ultra-high temperature conditions. Even in the processing of platinum electrodes, graphite electrodes have obvious advantages.
Light weight and low density
The density of graphite is usually 1.7-1.9g/cm3 (copper is 4-5 times that of graphite). Compared with copper electrodes, graphite electrodes will reduce mechanical loads in this process. It is more suitable for large molds.
Good cutting processing
Compared with metal materials, the volume of graphite is designed to be low. It has excellent machinability.
Super strong bonding effect
Crushed graphite can be bonded by adhesive, which saves time and material cost.
Excellent resistivity
Resistivity (ER) determines the resistance of a material to the flow of electric current. The lower the resistivity, the better the conductivity.
EDM graphite index reference
XINHUI CARBON EDM graphite has a particle size as small as two microns and as large as 20 microns. Our EDM graphite products have good performance and physical and chemical characteristics that match EDM. This allows customers to select the appropriate grade for use.
Our popular specifications and physical and chemical indicators of EDM graphite blocks are as follows:
|
Product Brand |
Application |
|
Bulk density |
Resistivity |
hardness |
Flexural strength |
Compressive strength |
Porosity |
Ash |
Purification of ash |
Size |
|
g/cm3 |
μΩm |
HSD |
Mpa |
Mpa |
% |
PPM |
PPM |
μm |
|||
|
XH-6k |
Photovoltaic, vacuum furnace |
1.81 |
11-14 |
58 |
45 |
90 |
12 |
1000 |
50 |
12 |
|
|
XH-1 |
Lightning protection industry |
1.83 |
11-14 |
50 |
45 |
100 |
12 |
800 |
50 |
12 |
|
|
XH-6ks |
Photovoltaic, vacuum furnace, precious metal smelting |
1.86 |
10-13 |
65 |
48 |
100 |
11 |
1000 |
50 |
12 |
|
|
XH-7k |
Electric Spark |
1.83 |
11-14 |
67 |
50 |
110 |
12 |
1000 |
50 |
8 |
|
|
XH-8k |
Electric spark, precious metal smelting |
1.86 |
10-14 |
72 |
55 |
120 |
12 |
1000 |
50 |
6 |
|
|
XH-6w |
Continuous casting, sintering, high temperature casting |
1.90 |
8-9 |
53 |
55 |
95 |
11 |
/ |
50 |
12 |
|
|
XH-7w |
EDM, Photovoltaic |
1.85 |
11-13 |
65 |
51 |
115 |
12 |
/ |
50 |
10 |
|
|
XH-8w |
EDM, Photovoltaic |
1.91 |
11-13 |
70 |
60 |
135 |
11 |
/ |
50 |
10 |
Our popular specifications and physical and chemical indicators of EDM graphite blocks are as follows:
Application
Graphite mold
Forging graphite mold requires larger electrode size
The surface needs to be well finished
Die-casting graphite mold
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