What is VDI texture?
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 a 2R surface finish?
2R Finish – Cold Rolled, Bright Annealed & Skin Passed Again, there is only a small difference with previously described surface finishes. In this case, we have the bright annealing process added. It consists of annealing the steel under oxygen-free conditions to protect it from oxidation and scaling.
What is the tolerance for EDM?
Using a wire EDM, we can hold tolerances as tight as ±0.0001” on parts up to 12” in length, 10” in width, and 8” in height. As a result of its ability to cut fine part features in hardened alloys, EDM is a natural choice in the machining of fixtures, inspection gauges, and other profile or contour work.
Is there a VDI scale for surface finishes?
There is a VDI scale for surface finishes, which is widely but not exclusively used in the EDM field. My lack of German has hampered my search for a cross reference chart or a description of what the VDI scale is about, but hopefully a reader will help.
What is the difference between VDI finish and polished finish?
Any documented help on this will be highly appreciated. A. VDI is a textured finish usually from spark eroding, for polished finish you should work in microns, lower the number higher the polish.
What is VDI surface finish card?
VDI Surface Finish Card Compared with traditional metal plaques, Plastopia VDI surface finish card gives you a real hand touch or visual look of what an actual plastic surface finish would like. Also, various materials like ABS, PMMA, PC, and colors like black, white, red are available for your option.
What is the difference between SPE/SPI and VDI finish?
A. VDI, while I am less aware of the call-out, is an EDM finish loosely related to the roughness of the resultant finish. SPE/SPI is a modified surface finish ranging from D-3 to A-1. D surfaces are media blasted.