Removable coating

Fig. 12.9 Corrosion resistance of tin-nickel electrodeposit impaired by pseudomorphic porosity originating on cold-rolled steel surface (left). Panel on right has had the shattered grain surface removed by chemical polishing (0-125 iim removed). Coating thickness 15 iim-, panels exposed 6 months to marine atmospheric corrosion (Hayling Island)...

Effectively removes coatings and contaminants from concrete floors. 

Ethyl cellulose (EC) is a water-insoluble cellulose ether. It is produced by reaction of alkali cellulose with ethylene chloride. It has film-forming and thermoplastic properties. As a plastic, it can be processed by extrusion and injections. It is hard, stiff and with good resistance to impact. It is soluble in the molten state with other thermoplastics. As for its film-forming properties, it is used in the formulation of varnishes, inks and glues. It forms removable coatings. 

Remove coating on heads of matches by scraping match sticks with sharp edge. 

For detection of more localized corrosion, such as crevice corrosion or SCC, other ultrasonic inspection techniques may be useful. Baseline data generated at the time of installation will also be helpful in evaluating results. One benefit derived from this type of inspection technique is that it can often be conducted with little or no interference with production. Periodic planned visual inspection of equipment utilized under conditions likely to cause stress cracking is also an effective technique, especially when combined with non-destructive inspection techniques such as dye penetrant inspection. It may be necessary to remove coatings or insulation from the equipment surface to facilitate inspection. 

Protect one face of RS with removable coating Arrangement of the RS... 

Another serious problem that arises in all C02 floods, and must be considered here, is corrosion. As is well known, solutions of C02 in water dissociate to form carbonic acid. This is a weak acid and does not cause much trouble in fresh water floods. However, in brine instead of pure water, C02 does become much more corrosive, and the particular composition of the brine has a great effect. These difficulties can be made worse by the presence of surfactant that can remove coatings emplaced by corrosion inhibitors. This difficulty could occur in both the injection as well as in the production facilities. In many fields, special metallurgy has been needed in critical elements of the hardware. Not much in the way of general principles can be given, except that, in designing a C02 flood, the modification of existing problems is to be expected. 

Paint strippers used to remove coatings from wood and mineral substrates may be either alkaline or based on organic solvents. 

Drying air or other gas is drawn through the conventional pan in various ways to remove coating vehicle vapors. Air may be directed over the bed surface with inlet and outlet air ducts mounted at the mouth or back of the pan. Air may also be directed through the bed via inlet and/or outlet air ducts or diffusion swords inserted in the bed. Drying may be facilitated or optimized with heat and/and or humidity control applied to the drying air. The pan may be housed in an oven to allow the pan surface to be heated for optimal drying characteristics. 

Chem. Descrip. Blend of nonaromatic hydrocarbons Uses Solvent cleaner for electronic components, engineering, fabrication (flux and adhesive remover), printing (excess ink remover), coatings (excess resin remover), aerospace (manual cold degasser) Features Evaporates to leave no residue very high flash pt., useful as nonflamm. solv. in most applies. 

Uses Solvent cleaner for electronic components, engineering, fabrication (flux and adhesive remover), printing (excess ink remover), coatings (excess resin remover)... 

SELECTION OF PLASTICISING AGENTS FOR TEMPORARY REMOVABLE COATINGS BASED ON POLYVINYL ALCOHOL... 

Self-neglect, dressing dyspraxia (e.g. when removing coat)... 

Mud cracking deep irregular cracks that resemble dried mud A relatively inflexible coating applied too thickly (especially inorganic zincs) Remove coating by abrasive blasting before applying at lesser thickness. 

Laser cleaning Lasers are very accurate and can remove coating or paint layers with great precision and relatively little temperature increase. 

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