Thermal coatings, a hydraulic industry's specialist

Introduction

Griekspoor Thermal Coatings (GTC) is an international company specialized in the application and finishing of coatings for the maritime industry and the hydraulic industry, particularly piston rods. All Griekspoor coatings are marketed under the trade name TOPCOAT®. All TOPCOAT® coatings meet the demands of the latest version of the NBD 10300, the coating specification for (ceramic) coatings developed and used by the Dutch department of waterways.

"Thermal coatings" are 'hard' coatings. These coatings are thermally applied: with the use of an energy source the coating material is applied to the product. GTC uses plasma, HVOF (High Velocity Oxygen Fuel), and laser as an energy source. This results in a hard coating, extremely wear-resistant and corrosion-resistant, that is finished to the specified fit and roughness. Griekspoor Thermal Coatings coats products up to a length of 23 meters, a diameter of 1 meter, and a weight of 20 tonnes.

Larger products are possible in consultation.

GTC feels that every customer should get the best value for money. This is not limited to the product alone. We support our customers when needed, for instance with help from our own laboratory.

In every business, also in GTC, suppliers add value to the end result. We maintain good relationships with our suppliers and together we are always looking for new developments and applications.

Coating overview

Below you can find an overview of the coatings we apply. We have selected the most common demands of a coating to help you find the right coating for your use.

The 'more info' button takes you to the product page of that coating. There you will find more information about the coating and also reference projects where this coating is used. You can download the product datasheet of every coating directly from this table. 

* Seals have to be checked. We kindly refer you to the product page for sealing construction advice

** Thicker bond coat leads to better corrosion resistance

*** Thicker if necessary (on request)

 

Trade name Bond layer Top layer Coating properties €     
Wear Corrosion Chemicals

TOPCOAT®

NiCr alloy
100µm (900µm)
Al2O3/TiO2
200µm (800µm)
++ ++ 100%

TOPCOAT®+

TOPCOAT® 177
100µm (3000µm)
Al2O3/TiO2
200µm (800µm)
++ +++ +++ 120%

TOPCOAT® ULTRA

NiCr alloy
100µm (900µm)
Cr2O3
200µm (600µm)
++½ ++ ++ 135%

TOPCOAT® ULTRA+

TOPCOAT® 177
100µm (3000µm)
Cr2O3
200µm (600µm)
++½ +++ ++++ 155%

TOPCOAT® CCR

--- Cr3C2
150µm (300µm)
+++ 130%

TOPCOAT® CCR+

TOPCOAT® 177
150µm (3000µm)
Cr3C2
150µm (250µm)
+++ +++ +++ 175%

TOPCOAT® WCR

--- WC
150µm (250µm)
++++ + 185%

TOPCOAT® WCR+

TOPCOAT® 177
150µm (3000µm)
WC
150µm (250µm)
++++ +++ ++½ 230%

TOPCOAT® 177

--- Superalloy
100µm (3000µm)
++++ ++++ 100%

TOPCOAT® 107

--- TOPCOAT®177/WC
125µm (600µm)
+++ +++ ++½ 110%

TOPCOAT® LC 625

--- Inconel 625
400µm (1200µm)
-/-- +++ +++½ 400%

TOPCOAT® LC 177

--- TOPCOAT®177
400µm (1200µm)
++++ ++++ 450%
  (Coating thickness between "(µm)" is max. coating thickness)     

 
*Ceramics is Seals have to be checked. Seal Construction as on page is advised.

** Thicker bond coat equals better corrosion resistance.

*** Thicker if necessary (on request)

 

Selecting the correct roughness

Selecting the correct roughness

The correct roughness of the piston rod coating is very important in the hydraulic industry. An optimum roughness has a positive effect on the lifespan of the rod coating and on the lifetime of the seals.
Come see TOPCOAT® 107 and more of our products

Come see TOPCOAT® 107 and more of our products

Griekspoor Thermal Coatings has recently developed TOPCOAT® 107: a nickel based super alloy blended with carbides. TOPCOAT® 107 is developed as an improved and very economical hard chrome and nickel/chromium replacement.
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