What is VDI finish?

VDI 3400 Surface Finish (commonly known as VDI surface finish) refers to the mould texture standard set by Verein Deutscher Ingenieure (VDI), the Society of German Engineers. The VDI 3400 surface finish is mainly processed by Electrical Discharge Machining (EDM) when mold machining.

What is Charmilles?

Noun. charmille f (plural charmilles) bower, arbor.

What is 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 a 63 Ra surface finish?

A. Larry: A 125 Ra or RMS finish is what one normally considers a standard machined finish as opposed to a 250 which would be rough. On the other hand 63 would be fine, 32 cannot easily be obtained by machining and has to be ground, 16 absolutely has to be ground, etc.

Is the charmille number the same as the VDI number?

If yours are the same as mine they have a translation of at least a few of their numbers. XS25A.TEC lists: Or you may try contacting Charmilles… A. If the Ra value in the above list is in µin then the Charmille number is the same as the VDI number. That’s good to know.

What are the specifications for Charmilles ultra polishing?

Charmilles EDM Finish Definitions Charmilles Ra Micro-meter Ra Micro-inch Rrms Micro-inch -2 .08 3.14 3.9 -1 .09 3.54 4.4 0 .10 3.94 4.9 1 .11 4.33 5.4

How to choose the best charmille surface finish?

How nice of Charmilles to have their own surface finish standard… Look at their “technology sheets”; which list different material types, thickness of material, wire type, amperage, etc. If yours are the same as mine they have a translation of at least a few of their numbers. XS25A.TEC lists: Or you may try contacting Charmilles… A.

What kind of Finish do I need for VDI 42?

VDI 42 . VDI45 finish standard made by steel and plastic surface. SPI Finish standard SPI A1 . SPI A2 . SPI A3 .