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Zinc Aluminium Flake Coatings (Zn-Al)

High-performance non-electrolytically applied micro-layer corrosion protection for fasteners and sheet metal components with 500 to 1,500+ Hours Salt Spray Test (ASTM B117) life.

OVERVIEW

Terotech Engineers provides Zinc Aluminium Flake (Zn-Al) coating services for railway and industrial components using a fully automatic coating line. The non-electrolytic process provides durable corrosion protection with uniform coating quality for fasteners, bolts, nuts, washers and sheet-metal parts.

KEY HIGHLIGHTS
Fully Automatic Coating Line

700 tons/month capacity

High Corrosion Resistance

500 – 1500 Hrs SST

Coating Thickness

5 – 15 microns

Suitable for Fasteners & Sheet Metal Parts
APPLICATIONS
Fasteners
Bolts, Nuts & Washers
Sheet Metal Parts
Automotive components
Marine / Humid / Coastal environments
Industrial hardware
Zinc Aluminium Flake Coated Products
FEATURES & BENEFITS
  • 1 Higher corrosion protection in comparison with electroplated Zinc or Zinc alloy.
  • 2 Coefficient of Friction (COF) control from 0.08 to 0.18.
  • 3 Chrome free coating.
  • 4 Coating compliance with RoHS and EVL.
  • 5 Bright silver & black finishes.
  • 6 Barrier as well as cathodic protection.
  • 7 Coating suitable for high temperature applications up to 350°C.
  • 8 Suitable for applications in Marine, Industrial, Humid, Coastal environments.
PROCESS
Process Flow
Process Bolt
Receipt Material ↓ Visual Inspection ↓ Alkaline De-greasing ↓ Shot Blasting ↓ Zn Flake Coating (Base Coat) ↓ Baking ↓ Zn Flake Coating (2nd/3rd Coat) ↓ Baking Inspection ↓ Packaging ↓ Dispatch Final Product
Process Bolt
Dip Spin Process

A method appropriate for coating small articles such as bolts, nuts, clips, washers, etc.

Dip Spin Process Diagram
Spray Process

A method for coating parts with wide surface area.

Spray Process Diagram
INFRASTRUCTURE & TEST FACILITIES
Machinery Equipped
  • 1 Alkaline De-greasing Facility
  • 2 Shot Blasting Machines
  • Fully Automatic Dip Spin Coating Machine with conveyor Curing Furnace
  • 1 Spray Booth
  • 1 Baking Ovens
Test Facility Available
  • Viscosity Check
  • Solid Content Check
  • Adhesion Test
  • Coating Thickness Check
  • Chemical / Fuel Resistance Check
  • SST STANDARD - ASTM B117
PRODUCT RANGE
ZN AL Flake (Geopert + Aquazinc) Coated - Bolts ZN AL FLAKE (GEOPERT + AQUAZINC)
COATED – BOLTS
Aqua Black (Geopert + Aquablack) Coated - Fasteners AQUA BLACK (GEOPERT + AQUABLACK)
COATED – FASTENERS
ZN AL Flake (Geopert) Coated - Nuts & Washers ZN AL FLAKE (GEOPERT)
COATED – NUTS & WASHERS
ZN AL Flake Coated Fasteners & Sheet Metal Components ZN AL FLAKE COATED FASTENERS &
SHEET METAL COMPONENTS