Plasma Electrolytic Polishing (PEP) — also known as plasma polishing, electrolyte-plasma polishing or electro-impulse polishing — is an advanced, eco-friendly surface treatment technology.
It provides stainless steel and other metal parts with a smooth, mirror-bright finish in just minutes.
The process uses a safe, water-based solution of inorganic salts — no toxic acids, no complex waste treatment, and no environmental risk.
PEP delivers superior surface quality, corrosion resistance, and cleanliness — ideal for medical, food, and precision industries.
It provides stainless steel and other metal parts with a smooth, mirror-bright finish in just minutes.
The process uses a safe, water-based solution of inorganic salts — no toxic acids, no complex waste treatment, and no environmental risk.
PEP delivers superior surface quality, corrosion resistance, and cleanliness — ideal for medical, food, and precision industries.
The technology Electrolytic Plasma Polishing is widely applied in the following industries:
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🏥 Medical Industry — polishing of surgical instruments, implants, prosthetics, and dental components.
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🍽️ Food and Pharmaceutical Industries — treatment of equipment surfaces, tanks, pipelines, and fittings requiring perfect cleanliness and hygiene.
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🚗 Automotive and Transport — finishing of decorative and functional stainless steel parts.
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✈️ Aerospace Industry — precision polishing of high-strength alloy components and assemblies.
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⚙️ Mechanical Engineering and Energy Sector — improving corrosion resistance and enhancing the visual appearance of metal parts.
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🧪 Scientific and Research Laboratories — preparation of samples and components requiring ultra-smooth and contamination-free surfaces.
EPP–PEP technology not only enhances the appearance of metal components, giving them a mirror-bright finish, but also significantly improves their corrosion resistance, hygienic properties, and durability.
The News section at plasmapolish.com/news features numerous examples of polished parts from various industries, showing before-and-after surface conditions as well as videos of the polishing process.
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Productivity: 1 – 110 dm² per cycle (depends on the selected equipment power).
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Cycle Time: 1 – 5 minutes (varies depending on the task and the initial surface condition).
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Transformer Power: 6 – 630 kW (depends on the surface area of the part being polished).
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Equipment Footprint: 2 – 8 m².
The equipment operates in a fully automatic mode controlled by a Siemens industrial controller, with the exception of the manual loading and unloading of parts.
Large components can be polished on lower-power systems in two stages: the part is immersed halfway, then turned over for complete processing.
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Working bath made of corrosion-resistant stainless steel, containing the polishing solution and fitted with a protective hood against vapors.
The bath includes a mechanized lifting system for easy immersion and removal of parts. -
Special-purpose transformer, available in various power capacities depending on the polishing area and the production program (output per shift).
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Power and control rack, providing automatic and manual operation modes via a Siemens industrial controller.
The system includes safety interlocks and sensors for operator protection and overload prevention of the equipment.
For the correct selection of plasma polishing equipment with the required power, please provide the following information:
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Dimensions of the parts to be processed (it is preferable to send us a drawing, sketch, or photographs of the parts).
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Material from which the parts are made.
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Desired result of the Plasma Electrolytic Polishing process — for example: mirror finish, edge rounding, burr removal, oxide or scale removal, weld seam cleaning, etc.
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Quantity of parts to be polished per work shift, and the number of shifts per day.
EPP Dynamics Pvt Ltd proudly serves a wide range of industrial customers — from small specialized manufacturers to large international corporations.
Our technology and equipment are trusted by companies across diverse industries that demand the highest standards of surface quality and production efficiency.
Frequently Asked Questions (FAQ)
Production time: 60–90 days.
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Basic Formula
P<sub>req</sub> = S × ρ × K,
where:-
S – surface area to be polished (in dm²),
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ρ – specific power requirement (for EPP ≈ 5 kW/dm²),
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K – safety factor (1.1–1.3 for stable operation).
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Example
For a part with S = 10 dm²:
P<sub>req</sub> = 10 × 5 × 1.2 ≈ 60 kW
→ Suitable model: EPP-60.
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If the part area exceeds the machine’s per-cycle capacity
Polish in two steps (half the part, then flip), or select a larger-capacity model.
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Quick Reference (at K ≈ 1.2)
| Polished Area (dm²) | Required Power (kW) | Recommended Model |
|---|---|---|
| 1 | ~6 | EPP-16 (with reserve) |
| 5 | ~30 | EPP-40 / EPP-60 |
| 10 | ~60 | EPP-60 / EPP-100 |
| 30 | ~180 | EPP-160 |
| 50 | ~300 | EPP-250 |
| 70 | ~420 | EPP-400 |
| 110 | ~660 | EPP-630 |
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Cycle Time and Energy Consumption
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Typical process time: 3–5 minutes.
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Energy consumption per 1 dm² for a 5-minute cycle ≈ 0.5 kWh
(scale linearly based on time and area).
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Electrolytic Plasma Polishing improves the surface finish by 3–4 quality classes relative to the initial surface condition
Within 3–5 minutes of the plasma polishing process, a mirror-like, uniform, and glossy surface is formed.
Weld seam cleaning and removal of heat tint occur within 1–2 minutes.
Rounding of sharp edges and deburring take about 2–3 minutes.
Surface brightening and activation take 30–60 seconds.
The average power consumption during Plasma Electrolytic Polishing is approximately 0.1 kW per dm² of stainless steel per minute.
The electrolyte-plasma polishing EPP process is environmentally friendly; stainless steel polishing is performed in a safe solution of inorganic salts.
The warranty period is 12 months from commissioning or 18 months from the date of shipment. After the warranty expires, we stay in contact with the customer and provide free remote consultations.
