CATALOGUE OF SUBSTITUTIONS


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Examples in the language: German
Number of examples: 4
Cleaning of resistance welding robots with CO2 pellets
Robots for resistance welding of car body parts are cleaned from slag and spatters by mobile blast machines and CO2 dry ice pellets. Thereafter normal welding operation of robots.
Cooperation Centre Hamburg - Wednesday, June 25, 2008



Blasting of ship's hull with CO2 ice pellets
Newly built ships made of steel covered with primer are cleaned of residue, oxides and soot from welding and gas cutting using CO2 pellets and a manual blasting equipment (pressed air operated), thereafter another corrosion protection paint is applied.
Cooperation Centre Hamburg - Wednesday, June 25, 2008



Brake cleaning
Lorry and van drum brakes are cleaned for repair- and maintenance purposes from mud, dust and sand by a hot water washer. This is a kind of wash stand fitted with a flow heater and a spray gun. The tap water is heated to 95°C and sprayed on the brakes thereby removing the dirt and also heating the brakes so they dry rapidly after cleaning. Thereafter the parts are reassembled.
Usually in garages aerosol cans containing highly volatile organic solvents are applied, having a high risk of fires and explosions as well as leading to inhalation of the solvents by the workers.
The German accident insurance recommends the hot water washers. The jet does not cause scaldings on the skin, because it is a very finely sprayed mist. When asked in Nov. 2007 the company confirmed, that they are still content with the process and that it is still being applied.
Cooperation Centre Hamburg - Wednesday, May 28, 2008



Removal of acrylate residue without using dichloromethane
Metal nozzles used for coating optical fibres are cleaned from acrylate residues in an ultrasonic bath filled with dibasic esters; thereafter continued operation of the tools. Originally dichloromethane was used, then N-methylpyrrolidone was tested, and finally DBE (dibasic esters) were adopted.
JobLiv Danmark as - Monday, March 24, 2003