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Proceedings

Three paths to the perfect surface

To achieve a perfect surface, Aurolia primarily utilizes three electroplating processes. With their assistance, we can positively influence many important properties of the material. Aurolia surfaces are harder, more durable, more wear-resistant, and corrosion-resistant. Our customers specify the requirements, and we create a surface layer that precisely meets their needs, from functionality to texture and appearance.

Overview of our processes

Hard anodizing

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Anodizing

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Chemical nickel plating

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Further processing

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Chemical Nickel

Chemisch Nickel eng

Chemical Nickel black

Chemisch Nickel Schwarz eng

Chemical Nickel Plating

Description

Steel, stainless steel, cast iron, non-ferrous metals, and aluminum: Thanks to various pretreatment measures, many materials can be chemically nickel-plated. Through coating, we significantly enhance corrosion protection and achieve high wear resistance with values of up to 1000 HV. Magnetic insulation properties are also possible. Of course, we can also meet aesthetic requirements. Thus, everything from matte through glass bead blasting to high gloss is possible. By adding additional components, other optical characteristics can also be achieved within certain limits. Our electrolytes work so precisely that even tightly tolerated fits with the coatings are precisely achieved.

We offer chemical nickel in low, medium, and high phosphorus ranges, in black, PTFE, or dispersed with boron nitride. As your competent partner, we are happy to assist you with any questions regarding chemical nickel. We work closely with process developers to provide you with practical solutions and the latest developments in high-performance surface technology. We process your components according to DIN EN ISO 4527.

Hard facts

  • Chemical Nickel Process
  • Processing: Batch and rack coating
  • Functional surface for corrosion and wear protection indoors and outdoors
  • Texture and appearance dependent on pretreatment (blasted/polished)
  • Tight tolerances +/- 2 μm
  • Wide range from low to high phosphorus content, from glossy to matte, from sliding to black
  • Layers can be combined, e.g., high phosphorus layer on low to increase corrosion protection, and vice versa to increase wear protection
  • RoHS, ELV, and FDA compliant
  • High chemical resistance
  • Low friction coefficient
  • Solderable

We are happy to conduct a sampling.

FAQ Chemical nickel plating

Chemical nickel plating is an autocatalytic process in which a nickel layer is applied to a workpiece without an external power source. The nickel deposition takes place through a chemical reaction in a special nickel electrolyte.

Chemical nickel plating offers numerous advantages, including:

  • High corrosion resistance
  • Good wear resistance
  • Precise layer thickness
  • Uniform layer distribution, even on complex geometries
  • Improved surface hardness

Chemically nickel-plated surfaces are often used in the automotive industry, mechanical engineering, electronics, aerospace, as well as in the food and medical technology sectors. The coating is ideal for components that require a uniform protective layer and high corrosion resistance.

The layer thickness can vary depending on the requirements and application, typically ranging between 5 and 50 micrometers. However, thinner or thicker layers can also be applied, depending on the desired protective effect.

In electroplated nickel plating, nickel deposition is achieved using an electrical power source, whereas chemical nickel plating relies on a chemical reaction. Chemical nickel plating enables uniform coating even in hard-to-reach areas, which is more challenging with the electroplating process.

Yes, chemical nickel plating can be applied to various base materials such as aluminum, steel, copper, brass, and other alloys. For aluminum, a special pretreatment is often required to ensure good adhesion of the nickel layer.

The process uses chemical substances, which is why strict environmental regulations and safety measures are necessary for chemical nickel plating. However, modern processes and systems are efficient in minimizing chemical consumption and ensuring environmentally friendly waste disposal.

Almost all metallic surfaces can be chemically nickel-plated, ranging from simple machine parts to precise components in electronics. The surface to be coated must be thoroughly cleaned to ensure optimal adhesion of the nickel layer.

The duration of the chemical nickel plating process depends on the desired layer thickness and the size of the components. Smaller parts can be coated within a few hours, while complex or large-scale components may require more time.

Various testing methods are used to check the quality of the nickel layer, including layer thickness measurement, hardness testing, and corrosion tests. These procedures ensure that the coating meets technical requirements and quality standards.

Yes, chemically nickel-plated surfaces can be reworked afterward, for example, by grinding or polishing to achieve a specific surface roughness. However, post-processing should be done carefully to avoid damaging the protective layer.

The durability of a chemically nickel-plated layer depends on the application and environmental conditions. In corrosive environments, the coating can last for decades, while it may wear out more quickly under mechanical stress. Regular inspections and, if necessary, recoating can extend its lifespan.