HUNGER Hydraulik: Ceraplate, CeraplatePlus coating

Ceraplate, CeraplatePlus Coating

Ceraplate

Piston rods, axles, valves and rolls may have a severely reduced life when installed in aggressive environments (eg. hydromechanical equipment, mining industry, paper mill and printing industry). In addition to conventional surface protection systems such as hardening, nitriding, hard chrome plating and nickel plating, Hunger has developed a coating technology which significantly improves surface protection against chemical attack and mechanical wear and tear: Ceraplate.

Technical facts

Thermically sprayed Ni/Cr base Layer and Cr₂CO₃/TiO₂ top layer
Layer thickness: base layer approx. 150 μm / top layer approx. 200 μm
Hardness of top layer 950 HV to 1.050 HV
Surface superfinished to Ra = 0,15 μm
For piston rods up to a diameter of 1,500 mm and an length of 20 m

Properties

Increased resistance to corrosion and chemical attack and increased resistance to abrasive an ersive wear and tear (Corrosion test according to DIN EN ISO 9227, 1,500 hours)

Fields of application

Hydraulic cylinders requiring increased corrosion protection in general machine engineering, hydromechanical engineering, casting machines, printing industry, chemical industry, etc.

CeraplatePlus

The CeraplatePlus coating also consists of a two layer coating design with metallic bonding layer and a metaloxide top layer. The stainless steel bonding layer is applied by laser welding. The top layer is applied by thermical spraying with the APS-technology (Atmospheric Plasma Spraying). Therefore the CeraplatePlus coating combines the excellent wear protection properties of a metal oxide coating with the outstanding corrosion protection properties of a laser coating. With it the CeraplatePlus coating is unlimited suitable for applications in marine atmosphere and in many offshore applications.

Technical facts

Laser welded bonding layer
Thermal sprayed (APS) top layer
Layer thickness: bonding layer approx. 150 μm / top layer approx. 200 μm
Hardness of top layer 950 HV to 1.050 HV
Surface honed and finished up to Ra = 0,15 μm
For piston rods up to diameter of 1.500 mm and length of 20 m

Properties

Excellent resistance to corrosion and chemical attack as well as very high resistance to abrasive and erosive wear and tear (Corrosion tests according to DIN EN ISO 9227, 3000 h and ASTM G48, 40°C).

Fields of applicaton