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Deburring with Rotary Tools & Gyro-Finishing

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Decarburization during plasma nitriding

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SURF Reports on decarburization of steel surfaces nitrided in d.c. plasma discharges. Mass spectrometry was used to detect presence of carbon and CH3 in plasma atmos. containing hydrogen, and carbon dioxide in those containing oxygen. Active species of gaseous mixtures containing hydrogen react with superficial C to form CH3 radicals, enabling decarburization. Conversely, although CO2-forming reactions taking place in presence of O2 drive early decarburization, at higher O2 concs., oxide coating layer acts as reducing agent for process.

Decarburizing drill bit surface

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Method of surface decarburizing cemented carbide microdrill, by placing it in protected environment and heating it at 600-1100°C for 15-120 min.

Decentralised cleaning in practice

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Argues that decentralised cleaning stations (usually aqueous) can be both more efficient and cost-effective than conveying all work to a central unit and then onwards. Case study with comments from actual experience from Messrs Reich, well-known mfrs of specialist milled & turned components, specialist ball-bearings etc. Photo shows unit with tote pans.

Dechema Corrosion Handbook Series

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ISBN - various. Vol. 1, sodium hydroxide, mixed acids. Vol. 2 hydrochloric & nitric acids, Vol. 3 hypochlorites, phosphoric acid, Vol. 4 drinking water & waste water (industrial & municipal effluents). Vol. 5 carbonic acid, chlorine dioxide, seawater, Vol. 6, gaseous, atmospheric, industrial gases, Vol. 7, sodium chloride, Vol. 8a chlorinated hydrocarbons & solvents, chloromethane, Vol.8b, chlorethanes, alkanols, Vol. 9 potassium & ammonium hydroxide, Vol. 10 sulphur dioxide, sodium sulphate, Vol. 11, sulphuric acid, Vol. 12, ferrous & ferric chloride, Vol. 13 Index. www.wiley.com/go/corrosion

Dechema Corrosion Handbook: Corrosive Agents & their Interaction with Materials. Vol. 8: Chlorinated Hydrocarbons, Chloromethanes, Chloroethane etc.

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ISBN10: 3527 31124-6. Replaces earlier volume. Part of series where corrosion behaviour of a particular class of compounds is collated.

Decision Tree Bears Fruit - Expert Knowledge Systems for Metal Finishing

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Description of knowledge-based expert system with examples from electropolishing or painting of plastics. Images are stored in computer and summoned as appropriate. Logic charts are shown for the 2 examples.

Decision-guiding aids for evaluation of solid waste from plating plants

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TS-Clean is computer software which determines options for recycling solid waste in terms of optimising costs.

Decisurf - intelligent computer program to select surface treatment process

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Decisurf is an expert system for selection of surface finishing process(es) to achieve requisite properties, incl. cost restrictions. In a multi-stage process that begins with a questionnaire, the next stage offers candidate solutions. Subsequent stages allow candidate numbers to be reduced by a "filtration" process, in which additional criteria are imposed. Examples are shown.

Deck coatings

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Common problems are examined that face ship operators who seek better value from on-board maintenance programme, specifically to marine deck coating maintenance, and look to improve performance of coating systems. Critical importance of paint specification is considered.

Decline of the European Printed Circuit Board Industry

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Comment supported by detailed statistics on market, turnover, player numbers etc.

Declining use of chlorinated solvents

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Note with histogram giving statistics, showing total use of chlorinated solvents in Germany, 1986-97 (Per, Tri, 1,1,1 DCM), down from 180 to 30 kTonnes/p.a.

Decoating aluminium scrap

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Decoating titanium and other metallized glass surfaces

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Glass surface metallized Ti is treated by oxidizing metallic Ti by contacting with mixture containing, mineral acid(s), ceric salt and surfactant.

Decolouring of Effluent Streams

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