Chemical Machining

{
  "id": "MLC-T-ENV-004761",
  "term": "Chemical Machining",
  "field": "Environment",
  "definition": "Removing metal from a part by controlled chemical attack, or etching, to produce desired shapes and dimensions. In chemical machining, a masking agent typically is applied to cover a portion of the part's surface; the exposed (unmasked) surface is then treated with the chemical machining solution. Wastewater generated during chemical machining includes spent solutions and rinses. Process solutions typically are discharged after becoming contaminated with the base metal. Rinsing normally follows chemical machining.",
  "references": [
    "40 CFR 438 Appendix C (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/chemical-machining/"
}