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D 116 Bio-cleaning ( Date: 2004-07-08 )
Steel parts e.g. for construction are cleaned from oils, dust, corrosion protec., rust, welding residue and metal fines by a biological cleaning process in a multiple immersion plant (integrated pickling, fluxing and galvanising); thereafter galvanising
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Type of cleaning : Immersion cleaning by using a dipping bath
Multitask equipment
decentral cleaning station (integrated in production line)
Biological cleaning
Cleaning support : Time to let the agent work in
Heating up the agent
Agitation by air blown into bath
Description : Time relates to degreasing, pickling, rinsing and drying. The following fluxing and galvanizing is not considered (full process takes ca. 45 minues).
Since when do you apply current cleaningsystem? : 6 / 2003
Step : 1. Cleaning, 30.000 litre, 60,0 ░C, 8,0 min, (Bio NA 45 + NaOH)
2. Biological degreasing, 30.000 litre, 40,0 ░C, 8,0 min, (Bio NA 01)
3. Pre-pickling, 30.000 litre, 20,0 ░C, 5,0 min, (Hydrocloric acid)
4. Pickling, 30.000 litre, 20,0 ░C, 5,0 min, (Hydrocloric acid)
5. Rinse-pickling, 30.000 litre, 20,0 ░C, 5,0 min, (Hydrocloric acid)
6. Rinsing, 30.000 litre, 20,0 ░C, 5,0 min, (Tap water)
7. Drying, 30.000 litre, 20,0 ░C, 5,0 min, (No agent)
Duration of cleaning process for one part (min.) : 35,0
Duration of cleaning process for the charge (min.) : 35,0
How often is the cleaning done (per day) : from: 30,0 until: 80,0
Further treatment : hot dip galvanizing
Surface requirements : free of oil and grease
Description: Free of oil and grease, quality of gavanising
Quick tests Visual control
Advanced tests : No statement
Quality of cleaning : very good
Company evaluation of cleaning process in general : very good
Comment :
Incidences : No statement from company
Working environment : No statement from company
Protection equipment : gloves
goggles
Automated dosificator for cleaning agent


Evaluation by company personnel
Occupational safety and health : very good
Environment protection : very good
Cleaning time : very good
Waste management : very good
Cleaning quality : very good