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English Electric Arc Metallization (Thermal Spraying)
We apply protective and wear-resistant coatings to working surfaces of parts using activated electric arc metallization with powder wires.
This method increases the performance of friction assemblies in machines and mechanisms.
Applications:
- Restores original dimensions of worn surfaces
- Strengthens friction surfaces (e.g., shafts, crankshafts, sliding bearings, guides)
- Restores bearing seats in housings and shafts
Benefits:
Coatings provide specific properties to surfaces (e.g., heat resistance, thermal conductivity, defined friction coefficient), which may differ significantly from the base material.
Materials used for arc metallization include:
Material | Application |
Zinc | Anti-corrosion coating (cathodic protection) |
Aluminum | Anti-corrosion coating (anodic protection) |
Bronze | Friction units of machine parts |
Brass | Decorative and anti-corrosion coating (depends on medium aggressiveness) |
Copper | Conductive components; decorative coating |
Chromium-nickel alloys | High-temp anti-corrosion protection |
Low-carbon steel (08G2S) | Bearing seat pressing |
Medium-carbon steel (30KhGSA) | Gear pressing; for seals (20Kh13, 40Kh13, 65G, etc.) |
Carbon steel | Sliding friction units (e.g., crankshafts) |
Stainless steel (12Kh18N10T) | Anti-corrosion protection (e.g., treatment plants, food-contact parts) |
Powder wire | For highly stressed parts requiring high hardness |
Molybdenum | Friction coatings |
Example:
Part: Crosshead rod of plunger pump ANT-55
- Surface: coated with wear- and corrosion-resistant metal powder wire
- Coating thickness: 0.4–0.5 mm
- Surface hardness: 60–65 HRC
