Blackwash

{
  "id": "MLC-T-IND-000589",
  "term": "Blackwash",
  "field": "Industrial and trades",
  "definition": "A refractory coating, typically a suspension of graphite or another carbon-based material in water or a solvent, applied to the interior surfaces of a sand mold or core. It creates a non-stick barrier between the molten metal and the sand, preventing metal penetration and producing a smoother surface finish on the final casting. The coating is applied by spraying, brushing, or dipping before the mold is closed.",
  "subject": "Shop talk and trade slang",
  "references": [
    "Blackwash definition (Ozdic)"
  ],
  "translations": {
    "de": "Blackwash",
    "es": "blackwash",
    "fr": "blackwash"
  },
  "url": "https://mlchart.com/terminology/industrial/blackwash/"
}