Finishing

A hallmark of Klinkenberg

Klinkenberg is renowned for its high-quality finishes, from innovative design to detailed final treatment. Our products — including screw conveyors and dosing screws — receive advanced coating and stainless steel finishes, with viwateQ bead blasting technology ensuring superior smoothness.
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Outstanding finishes at KlinkenbergFrom innovative design to advanced viwateQ stainless steel finishing

Klinkenberg delivers high-quality screw conveyors, dosing screws, and discharge systems. It all starts with an innovative design and continues through to the final finish.

Modern coating systems consist of a primer, one or more intermediate layers, and a topcoat. Each layer has a specific function. The primer is applied in the workshop or factory, followed by the intermediate layers—usually also applied in the workshop or factory—and finally the topcoat, which may be applied either in-house or on-site.

For stainless steel finishing, we use water-peening techniques (viwateQ). This reduces surface roughness to a Ra of 0.5, compared to a Ra of 0.8 for cold-rolled stainless steel plates. You can find more information about our stainless steel finishing here.

Finishing Klinkenberg Zaanstad
  • Perfectly blasted SA2.5
  • Tailored to application conditions
  • Optimal mechanical adhesion
  • Durable, high corrosion resistance
Trough Screw Conveyors Klinkenberg Zaanstad
Trough Screw Conveyors Klinkenberg Zaanstad
Trough Screw Conveyors Klinkenberg Zaanstad

Klinkenberg Paint Systems

Basic System

Blasted to SA 2½ ISO 8501-1, 80 µm epoxy primer (yellow, orange, and red shades excluded due to coverage issues)

ISO 12944 Corrosion Class C3 H

lasted to SA 2½ ISO 8501-1, 120 µm Jotun Penguard Express ZP, 60 µm Jotun Hardtop XP

ISO 12944 Corrosion Class C4 H

Blasted to SA 2½ ISO 8501-1, 60 µm Jotun Barrier 80, 80 µm Jotun Penguard Express ZP, 60 µm Jotun Hardtop XP

ISO 12944 Corrosion Class C5 H

Blasted to SA 2½ ISO 8501-1, 60 µm Jotun Barrier 80, 140 µm Jotun Penguard Express ZP, 60 µm Jotun Hardtop XP

ISO 12944 Corrosion Class C5 VH

Blasted to SA 2½ ISO 8501-1, 60 µm Jotun Barrier 80, 200 µm Jotun Penguard Express ZP, 60 µm Jotun Hardtop XP

Pickling & Passivation

After welding or heat treatment of stainless steel, oxides such as scale, mill scale, and heat tint can form. These oxides are removed through pickling, restoring a clean and pure surface. Subsequent passivation enhances corrosion resistance by eliminating any residual iron or foreign metals from the surface.

Klinkenberg has its own treatment baths measuring approximately 7000 × 1500 mm, ensuring that all machines leave our facility meeting the highest quality standards.

  • In-house pickling baths
  • Guaranteed quality
  • No weld discoloration
  • No iron contamination
Beitsen & Passiveren

Passivating Stainless Steel

Passivation of stainless steel is carried out using a nitric acid-based solution in a bath measuring 7000 × 1500 mm to restore the oxide layer. This layer may have been damaged by welding or mechanical processing.

Properties:

  • Removes a thin layer of metal
  • Affects the oxide layer
  • Removes mill scale and heat tint
  • Eliminates corrosion products
Passiveren RVS

Grinding, Polishing, Superfinishing & High-Gloss Polishing

Industries such as medical, pharmaceutical, food, and chemical sectors demand high surface finishing standards from manufacturers. Klinkenberg offers various finishing levels including grinding, polishing, superfinishing, mirror polishing, and electropolishing.

  • Shorter CIP / SIP cycles
  • Hygienically smooth finish
  • High resistance to product buildup (anti-stick)
  • Easy to clean
Slijpen, Polijsten, superfinishen & hoogglanspolijsten

Advantages Grinding, Polishing, Superfinishing & High-Gloss Polishing

Using one of the above-mentioned finishes provides the end user with clear benefits such as:

  • Improved corrosion resistance
  • Cleaner and smoother surfaces
  • Less dirt adhesion
  • Reduced bacterial growth
  • Harder material surface
  • Less prone to scratching

The material surface becomes harder and more scratch-resistant.
Our testing and measurement methods follow ASTM D4417 Method A.
Rugotest Roughness Number vs. nominal Ra value in µm:
N11 = Ra25, N10 = Ra12.5, N9 = Ra6.3, N8 = Ra3.2, N7 = Ra1.6, N6 = Ra0.8,
N5 = Ra0.5, N4 = Ra0.2, N3 = Ra0.1, N2 = Ra0.05, N1 = Ra0.025, N0 = Ra0.0125

RVS-volgens-GMP4-spiegel-of-elektrolytisch-polijsten

We are happy to help Our company is ready every day to support your critical processes.

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Klinkenberg GMP Finishing Standards

  1. GMP1: Welds are free of pores and cracks, pickled and passivated inside and out.

  2. GMP2: (Includes GMP1) + Internal and external Viwateq finish (bead blasting with water).

  3. GMP3: (Includes GMP1 & GMP2) + Product-contact welds are ground to a Ra value of 0.8 µm.

  4. GMP4: (Includes GMP1, GMP2 - external only, and GMP3) + Internal mirror polishing or electropolishing.

Variants

High-gloss polishing of dosing shaft

Hoogglanspolijsten doseerasje

Electropolishing

Elektrolytisch polijsten

Mass flow aqua blasting

Massflow waterparel

Pickling and passivation

Beitsen en passiveren

Documentatie

Bulk Density Table

Bulk Density Table

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