Electrical discharge machining

{
  "id": "MLC-T-ENV-009113",
  "term": "Electrical discharge machining",
  "field": "Environment",
  "term_source": "Electrical Discharge Machining",
  "definition": "Removing metals by a rapid spark discharge between different polarity electrodes, one the part and the other the tool, separated by a small gap. The gap may be filled with air or a dielectric fluid. This operation is used primarily to cut tool alloys, hard nonferrous alloys, and other hard-to-machine materials. Most electrical discharge machining processes are operated dry; however, in some cases, the process uses water and generates wastewater containing dielectric fluid.",
  "subject": "Commercial processes",
  "references": [
    "40 CFR 438 Appendix B (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/electrical-discharge-machining/"
}