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The process of shaping the workpiece by arc method by giving electric current to the conductive material, which is especially preferred in the molding industry, is called the plunge erosion method.
As we will explain below, the traditional dip erosion process using copper has left its place to the use of graphite over time, due to the many superior advantages of graphite over copper.
The technical advantages and price performance indicators of the use of graphite have attracted users and made the use widespread.
With all these developments, the correct graphite quality must be determined by a professional technical analysis and study for each different plunge erosion process.
Since graphite is a material with a wide range of usage areas, choosing the right graphite in a special process such as plunge erosion, correct processing methods and ideal surface quality are among the most important parameters of the work.
As SKC KARBON company, it serves its customers with its industry experience dating back to 1963, expert technical staff and unique machine park in the sector. State-of-the-art CNC machines, especially with a five-axis machining center and a five-axis CMM device that can measure the machined part in micron order, has gained an assertive place in the EDM electrode sector in a closed area of 11,000 m2.
So Why Use Graphite Instead of Copper?
1. Graphite is much lighter than Copper. The difference between densities is about 1/4. (Copper = 8,96 gr / cm3 and Graphite = 1,83gr / cm3)
2. Graphite provides the ability to process in much narrower tolerances and much thinner ribs than copper without stretching. Copper ribs in the range of 0.3 -0.5mm may cause stretching during processing and may cause mold errors during processing. Graphite can be processed without stretching due to its brittle structure.
3. Graphite can be processed much faster than copper. While copper is making burring and wrapping in chip removal, graphite only removes dust from the area where the mill comes into contact with its graphite structure and does not cause burrs. (Up to 40% increase in cutting speed - electrical resistance)
4. Graphite provides a much better surface quality than copper with its fine grain structure and processing speed.
5. Processing time is on average 30% faster than copper and provides significant time savings in processing time.
6. The price fluctuation for copper in unit prices is greater than for graphite.
7. In case of strain in the copper as a result of incorrect plunging into the piece, it causes an undesirable chip removal and we may encounter an unwanted shape. The behavior of the graphite part in this situation will not damage your part because it will be in the direction of breaking. This protects you from costly mold damage.
SKC KARBON, as a domestic company in the field of Carbon Graphite, aims to minimize the costs of our customers and optimize the quality with a professional approach and fast service.