Abstract: A method for cleaning furnace headers using a cleaning module for cleaning pipes, having a flexible body with a cleaning surface and a nose at each end, the nose being tapered to a tip. The dimensions of the cleaning module are such that the ratio of the overall length to the diameter is about 1.5 to about 1.75 and the ratio of overall length to nose length is about 5 to about 10.

Abstract: A center transfer unit positioned between a solids collection chamber and a cleaning particle vessel contains vibrating inclined screens to separate chunks of waste solids from cleaning particles recycled to the cleaning particle vessel.

Abstract: A process for producing a high density magnetic storage device such as a rigid memory disc having improved magnetic recording properties including high coercivity, high remanence and improved hysteresis loop squareness. The device is prepared by initially cleaning the surface of a substrate, such as an aluminum disc, zincating that cleaned surface, when applicable electrolessly depositing a non-magnetic, nickel-phosphorus layer thereon which is substantially free of pits and other surface imperfections and which has a nickel content of from approximately 88 to 92 percent and a phosphorus content of from 12 to 8 percent, by weight. The non-magnetic, nickel-phosphorus layer is then polished and a magnetic, cobalt-phosphorus layer electrolessly deposited thereon. The cobalt-phosphorus deposition is performed in a highly stable, ammonia-free bath containing a source of cobalt ions, a source of hypophosphite ions, a source of citrate ions, and a low molecular weight, bath soluble amino acid.

Abstract: Substrates, especially those having plated metal surfaces, are subjected to passivation treatments in baths that incorporate one or more film-forming agents at least one of which does not require chromium and includes anions or cations of elements other than chromium. Typically, the anions or cations are introduced as bath-soluble salts which react with the plated surface of the substrate to form an adherent, coherent passivation surface film. Also present within these baths are a source of hydrogen ions and a bath-soluble carboxylic acid or derivative activator for enhancing the rate of the passivation reaction. Articles passivated in baths incorporating these film-forming agents have a hydrophobic surface that exhibits corrosion resistance and that typically has a bright finish.

Abstract: Substrates, especially those having plated metal surfaces, and subjected to passivation treatments in baths that incorporate one or more film-forming agents at least one of which does not require chromium and includes anions or cations of elements other than chromium. Typically, the anions or cations are introduced as bath-soluble salts which react with the plated surface of the substrate to form an adherent, coherent passivation surface film. Also present within these baths are a source of hydrogen ions and a bath-soluble carboxylic acid or derivative activator for enhancing the rate of the passivation reaction. Articles passivated in baths incorporating these film-forming agents have a hydrophobic surface that exhibits corrosion resistance and that typically has a bright finish.