What VDI 3400?
VDI 3400 texture refers to the texture standard set by Verein Deutscher Ingenieure (VDI), the Society of German Engineers. It is mainly processed by Electrical Discharge Machining (EDM) when mold machining but could also be done by the traditional texturing method.
What is VDI on an EDM machine?
VDI 3400 Surface Finish – is a scale often used by German machine manufacturers and quite widely used in Spark and Wire Erosion (Verein Deutscher Ingenieure, the Society of German Engineers) Charmilles EDM surface finish chart.
What is EDM texture?
An EDM surface finish is different to one produced by conventional material removal processes. Rather than exhibiting directionality, the texture is random, which is beneficial in many applications. Furthermore, by taking multiple skimming passes, EDM finish quality can become almost mirror-like.
What is SPI b2 finish?
SPI b2 is slightly finer than b1 and RA.4-5 made by 400 grit. SPI b3 is comparable to RA.9-10 made by 320 grit. SPI c1 is finer than b3 and RA.10-12 made by 600 stone. SPI c2 is slightly finer than c1 and RA.25-28 made by 400 stone.
Can you EDM plastic?
Virtually any material that is conductive is a perfect one for wire EDM, and it includes all the metals. DEK’s wire-cut EDM equipment also can machine plastic, metal alloys, exotic and precious metals.
What does 3.2 surface finish mean?
3.2 μm Ra. This is the standard commercial machine finish. It is suitable for most consumer parts and sufficiently smooth, but it contains visible cut marks. It is the default surface roughness applied unless otherwise is specified.
What is a b2 finish?
2B: This is achieved by cold rolling, heat treating and pickling, along with the application of a light rolling at the end in order to achieve a smooth and reflective sheen. Considered the most widely used surface finish, 2B is the basis for most polished and brushed finishes.
Can wire EDM cut aluminum?
What materials can be cut using EDM wire? Any conductive material such as steel, titanium, aluminium, brass, alloys and superalloys can be cut using the EDM wire method. With its accuracy, the EDM wire cut technique has become a convention cutting method in all industries.
Can you EDM glass?
Another machining method for glass, which can be used for micro-hole drilling, is micro-electrical discharge machining (EDM) with an assisted electrode [89,90]. The EDM process is based on ablation of material through melting and evaporation, by electrical discharges.