Method for cleaning material contaminated with greasy or oily substances

US5401321A · kind A · utility

Assignee

• Leybold GmBH · DE

Inventors

• Franz Hugo · Aschaffenburg, DE
• Johannes Mosch · Alzenau, DE
• Erwin Wanetzky · Großkrotzenburg, DE

Key dates

• Filing date: Mar 31, 1994
• Grant date: Mar 28, 1995
• Expiry date: Mar 31, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23G5/00
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The parts are heated by conduction and radiation while the chamber is evacuated, whereupon the chamber is sealed air-tight and the parts are also heated by condensation of vapors from the grease and oil. When the parts reach a constant temperature the chamber is again evacuated, causing the temperature of the parts to drop as condensate thereon evaporates. Finally, the chamber is returned to atmospheric pressure and the cleaned parts are removed.