Welcome to the presentation: Modern Industrial Cleaners
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Welcome to the presentation: Modern Industrial Cleaners Dr. Florian Treptow, Ph.D., Dipl.- Ing. (FH) Chemie
Schedule
Industrial Cleaners - Range
Cleaning Parameters
Neutral Cleaners
Actual Industrial Projects
Technical cleanliness
Summary
Outlook
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Industrial Cleaners - Range
• Alkaline Cleaners
• Neutral Cleaners
Water-based
• Acidic Cleaners
• Disinfecting Cleaners
Solvent-based
• Hydrocarbon- based
(Degreasing)
• Emulsion cleaners
• Floor cleaners
Special products • Cleaners for workspaces
• Cleaners for the solar power industry (waiver-
and glass cleaners)
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Cleaning Targets
• „Clean“ metal surfaces (to pass the “remaining particles test”
for the automotive industry)
• Removing layers that hinder diffusions (heat treatment)
• Prepare for welding (absolute clean surfaces)
• Hygienic surfaces (workspace- and floor cleaning)
• Corrosion protection
These targets are most times only to be reached with more
chamber washing machines
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Cleaning Parameters
chemistry mechanics
temperature time
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Which Additives are used to formulate a cleaner
Reodorant
Defoamer
Preservation Additives
Hardness Optimizer
Metal Inhibitors
Demulsifier
Surfactants
Builder
Hydroxides
Amines
Phosphates
Organic Acids
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Make-up and Top-up water
Deionized water Water DIN-water
0 °d 10 °d 20 °d
pH-value 6.8 5.8 5.7
Conductivity
~10 ~400 ~800
[µS/cm]
Residues
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Cleaning Methods
• Dipping
• Ultrasonic
• Flood Washing
• Vacuum
• Vacuum Pearl Washing
• Spraying 1 - 5 bar
• Pressure spraying 5 - 20 bar
• Spraying with high pressure 20 - 1200 bar
and all possible combinations of these methods
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Contaminations - Soils
dust
cleaner bath
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Neutral Cleaners
• They are not really neutral, the pH value of a solution for
application is 7.5 to 10.5 (per definition)
• Neutral cleaners contain:
• Corrosion inhibitors
• Hardness stabilizers
• Sometimes surfactants
• Neutral cleaners are usually used in spraying and dipping systems
at temperatures between 15 to 80 °C without rinsing
• Most products are salt free
• Typically they are usable for ultrafiltration
• Usually they are classified as non-hazardous material
Dr. F Treptow Page 10 from 23Neutral Cleaners
pH- use Concentration
Corr.
Product value Temp. Material Application
Prot. [%]
2% [°C]
Heat treatment and
mechanical production,
especially in central
steel, cast iron,
Standard Cleaner 10.2 50 - 75 +++ 1-5 systems, high efficient
partly aluminum
washing and demulsifying
properties, leaving low
residues, low foam
High corrosion protection is
given already from low
concentrations on, very
State of the art
good demulsifying
cleaner, Steel, cast iron,
properties, almost foam free,
surfactant free, 9.3 10 - 90 +++ aluminum, 0,5 - 3
stable against microbiology;
new cleaner yellow metals
specially developed a high
generation
pressure cleaner up to 1200
bar! Formaldehyde-releaser
free, boron free, silicate free
+ temporary corrosion protection All cleaners are hardwater resistant.
++(+) higher temporary corrosion protection The use of deionized water is recommended.
Dr. F Treptow Page 11 from 23High pressure tests at 800 bar
The cleaners are tested in
a circulating system at 70
°C for 8 hours, spraying
with a 15° nozzle
Results:
• No foam
• Very good pressure stability
• Best possible cleaning result
Dr. F Treptow Page 12 from 23Cold use at an automotive supplier
For many employees the odor caused by bacteria and fungi is a problem.
Therefore the new products are formulated longtime-stabile. The state-of-
the-art way of formulating products is to use long-time stable amines and
completely resign bactericides. Thus, the cleaners are more skin-friendly
than conventional products and are not classified according to directive
1999/45/EC.
Dr. F Treptow Page 13 from 23New automotive group standard
Energy savings through reduced temperature applications of a
common cleaner that was optimized in close, global process
integration with OEM approvals (ABB Robotics, Hammelmann)
results in longtime-stable, multi-metal compatible product
Dr. F Treptow Page 14 from 23High pressure applications at automotive manufacturers
Deburring and cleaning in one step - this is a project with major
automotive manufacturers. This nitrite-free high-pressure cleaner with
very good corrosion protection is not only suitable for steel, aluminum,
cast iron and nonferrous metals, but also for cleaning plastic parts.
The new cleaner generation is formaldehyde-releaser- and
bactericides free, but still longtime-stable and label-free through
directive 1999/45/EC. Applicable from 10 to 80°C with more than 1200
bar.
Dr. F Treptow Page 15 from 23Particle testing in washing fluids - Technique Dr. F Treptow Page 16 from 23
Particle testing in washing fluids - Results Dr. F Treptow Page 17 from 23
Particle testing in washing fluids - Results Dr. F Treptow Page 18 from 23
Particle testing in washing fluids - Results Dr. F Treptow Page 19 from 23
Summary: modern neutral cleaners
o Longtime-stable
o Formaldehyde-releaser-free
o Boron-free
o Silicate-free
o Free of heavy-metals and salts
o Multi-metal usable
o Fulfill already all REACH- Regulations
o Are label-free through directive 1999/45/EC
o Some new product lines are surfactant free and therefore usable at
all temperatures (no cloud-point)
o Offering hybrid technology i.e. deburring and cleaning at high
pressures in once
Dr. F Treptow Page 20 from 23Outlook: modern neutral cleaners
o According to regulations: What is applicable for emulsions could
also be applicable for synthetic solutions i.e. cleaners
o To know these regulations and be able to have input on them;
scientists who develop metalworking fluids should be members of
these committees, i.e. VSI
o Technical cleanliness is more and more important, the machine
producers, the chemistry and the user working much more together
to develop solutions
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Thank you for your Attention
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