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Eltropuls Ion
Nitriding Advantages At A Glance
- Excellent quality at an affordable price
- Uniform metallurgical results because
of the ELTROPULS pulsed plasma technology
- Metallurgical results can be readily
programmed to meet specified application
requirements
- Processing is reproducible
- No distortion of the parts
- Mechanical masking permits selective
hardening
- A uniform temperature on thick and thin
sections
- Shortest heat up and treatment times
- Limited factory floor space requirements
- Can be directly integrated with the
existing parts manufacturing line
- Designed for fully automatic operation
- Highest environmental compatibility,
no toxic or hazardous materials are involved
- No toxic waste management expense
- Minimum set up and operating labor costs
- High up time and equipment availability
and a long operating lifetime
- Low servicing time because of modular
designs
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Some Advantages
of the ELTROPULS Technology
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Plasma
Power Current and Voltage
Power Duty-Cycle
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Important
Processing Advantages
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Shortest Possible
Time
Your part can be heated
in the shortest possible
time, in vacuum, by radiation
or in an inert atmosphere,
with natural or forced
convection.
Programmable
Time and temperature
can be freely programmed
to meet every process
requirement. Even
the most complicated programs
can be easily reproduced.
Automatic Cooling
After reaching the end
of the heat and soak steps,
the part can be automatically
cooled. The method
for cooling to the unloading
temperature can be selected
to meet the requirements
of the part—slowly,
in a vacuum to insure
freedom from distortion,
or more quickly, in an
inert atmosphere with
natural or forced convection,
for high parts throughput
and productivity.
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Chemical Reactions
Chemical reactions can
take place within the
plasma that otherwise
would be possible only
at much higher temperatures.
Sputter Cleaning
Passivated surfaces can
be activated by sputter
cleaning. Critical
chemical reactions kinetics
are improved by sputtering.
Automatically Adjusts
Power
With the ELTROPULS pulsed
power technology (US Pat
4,645,981, DP Pat 3,322,341)
plasma power is automatically
limited to just the
amount necessary—
Insuring uniform temperature
of the parts and allowing
loading a maximum number
of parts in the furnace.
Uses Smallest Amount
of Power
Using the smallest amount
of power for the process
and preventing overheating
of thin sections (as with
technologies lacking pulse
duration and duty-cycle
control).
Guarantees Consistency
Guaranteeing consistent
nitrided layers with either
full loads or with partial
loads.
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Environmentally Friendly
Hazardous or toxic materials
are not used nor are they
generated. Processing
is both safe and environmentally
friendly, so it can now
be conducted within the
main manufacturing area.
Load Size Not Critical
Load size is not critical,
so that parts with different
geometries can be treated
at the same time.
Cold-Start to Cold-Stop
processing permits small
batch operations without
utility cost penalties.
Minimum Expense
The low consumption of
electrical power, process
gases and cooling water
ensures a beneficial surface
modification operation
at minimum expense.
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Advantages of Plasma
Nitriding over Gas or Salt Bath
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Plasma nitriding imparts a hard
wear resistant surface without
brittleness, galling, or spalling.
This eliminates costly cleaning or
grinding to remove the brittle white
layer associated with traditional
nitriding.
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A uniform glow discharge that envelops
the entire surface achieves a consistent
hardness and case depth. This is especially
noticeable on complex geometries where
gas nitriding case depths can be non-uniform.
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Plasma nitriding least affects the
surface finish of the product. Salt
bath and gas nitriding, which uses ammonia
(NH3) and phosphate for activation ,
will roughen a ground or polished surface.
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Plasma nitriding has a higher
surface hardness and maintains
your material’s core properties due
to the lower processing temperatures
associated with plasma nitriding (500
- 570 Centigrade). Traditional nitriding
operates at higher temperatures and
can change the core properties of your
material.
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More materials can be selected for
plasma nitriding, including cast
iron, mild steel, mold, tool, high speed
and stainless steels.
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Plasma nitriding is environmentally
friendly. Plasma nitriding uses
non-toxic, precisely controlled gas
mixtures. Traditional gas and salt bath
nitriding uses toxic gasses, salts and
ammonia that are hard to control and
harmful to the workers and the environment.
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