Subsection DJ metals
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' | ' | ' | Substrate | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Iron | Steel | Aluminium | Copper | Brass | Alloys | Other metals | Plastic | Printed Circuit Board | |||||||
Steel coil | Steel strip | Steel wire | Steel sheets | Steel cast products | |||||||||||
UNIT OPERATIONS | Typical processes | ||||||||||||||
CLEANING | Pre-treatment | Electropolishing | x | x | x | x | x | x | x | ||||||
Solvent degreasing | x | x | x | ||||||||||||
Aqueous cleaning | x | x | x | ||||||||||||
Pickling | x | x | x | x | x | ||||||||||
Etching and descalling | x | x | x | x | |||||||||||
Electrolitically assisted pickling, activation and degreasing | |||||||||||||||
Metal stripping | x | x | |||||||||||||
Rinsing | x | x | x | x | x | x | x | x | x | x | x | x | |||
DRYING | Post-treatment | Drying | x | x | x | x | x | x | x | ||||||
OTHER PROCESS HEATING | Post-treatment | Heat treatment for hydrogen de-embrittlement | x | x | x | x | |||||||||
GENERAL PROCESS HEATING | Boiler feed water pre-heating | ||||||||||||||
HEATING OF PRODUCTION HALLS | Heating of production halls | ||||||||||||||
COOLING OF PRODUCTION HALLS | Cooling of production halls | ||||||||||||||
COOLING PROCESSES | Cooling of process solutions | ||||||||||||||
PAINTING | Finishing | Electropainting | |||||||||||||
Lacquering | |||||||||||||||
Colour anodizing on aluminium | x | ||||||||||||||
Metal colouring | x | ||||||||||||||
SURFACE TREATMENT | Main treatment | Plating copper and copper alloy | x | x | |||||||||||
Electroplating nickel | x | x | x | x | x | x | |||||||||
Plating chromium | x | x | x | ||||||||||||
Plating zinc and zinc alloy | x | x | x | x | x | x | |||||||||
Plating cadmium | x | x | x | x | x | x | x | ||||||||
Plating tin and alloy | x | x | |||||||||||||
Plating precious metal | x | x | x | x | x | ||||||||||
Autocatalytic plating | x | x | x | x | |||||||||||
Immersion coatings | x | x | |||||||||||||
Finishing | Oiling | x | |||||||||||||
Anodizing | x | x | |||||||||||||
Sealing following anodizing | x | x | |||||||||||||
Conversion coatings (phosphate layer) | x | x | x | x | x | x | x | ||||||||
Conversion coatings (chromium) | x | x | x | x | x | x | x | x | x | ||||||
Coating oxide (chemical blacking) | x | x | x | x | x | x | x | x | |||||||
Brightening | x | x | x | x | x | x | x | x | |||||||
Chemical milling | x |