Did you like how we did? Rate your experience!

Rated 4.5 out of 5 stars by our customers 561

Award-winning PDF software

review-platform review-platform review-platform review-platform review-platform

Video instructions and help with filling out and completing Why 8850 Form Discharged

Instructions and Help about Why 8850 Form Discharged

As erosion continues, the machine controls advance the electrode through the work, always maintaining a constant gap distance between it and the workpiece. - To understand how EDM removes metal, let's examine a single spark in the erosion process. A pulse of DC electricity reaches the electrode and part, creating an intense electrical field in the gap. - Microscopic contaminants suspended in the dielectric fluid are attracted by the field and concentrate at the field's strongest point. - These contaminants form a high conductivity bridge across the gap as the field's voltage increases. - The material in the conductive bridge heats up as the voltage increases. Some pieces ionize, forming a spark channel between the electrode and the workpiece. - At this point, both the temperature and pressure in the channel rapidly increase, generating a spark. - A small amount of material melts and vaporizes from the electrode and workpiece at the points of spark contact. - A bubble composed of the gaseous byproducts of vaporization rapidly expands outward from the spark channel. - Once the pulse ends, the spark and heating action stop, causing the spark channel to collapse. - The dielectric fluid rushes into the gap, flushing molten material from both surfaces. - The residue left by EDM consists of small solidified balls of material and gas bubbles.