Conversion from Iron to Zinc Phosphate
I am currently interested in converting my washer from iron phosphate to zinc phosphate but I was concerned with the hazards of welding over the pretreated steel. I was also wondering if you can “double treat” with zinc phosphate, since the product will still have a layer of phosphate on it prior to wash.
Methylene Chloride Stripper Recycling
I am wondering about using pure methylene chloride as a paint remover with a water blanket on top to control the fumes and distilling the methylene chloride laden sludge in a solvent distiller to recover it for reuse. Is there any reason this is not commonly done?