Advantages and requirements
Metal powder coating
Coating with powder coatings is an innovative and environmentally friendly method of finishing metal surfaces. With its high-quality powder coatings, FreiLacke offers an ideal coating solution for various industrial applications. Whether aluminium, stainless steel, steel or other metals – the process ensures highly resistant surfaces, aesthetic versatility and a sustainable coating.
Powder coating for metal - ideal for many applications
Powder coating, also known as powder painting, is a coating technique that does not require solvents and is therefore particularly environmentally friendly. A fine powder is applied to metal surfaces by means of electrostatic charging and cured at high temperatures. The result is an even, durable and resistant protective coating.
Advantages of powder coating metal surfaces
Powder coating offers various advantages for different types of metal:
Corrosion protection
Powder coatings reliably protect metal surfaces against corrosion and the effects of weathering.
Aesthetic flexibility
A wide range of colours and many surface effects offer numerous design options.
High resistance
Powder coatings are resistant to abrasion, chemicals and mechanical influences.
Environmental protection
The process does not use solvents and enables virtually waste-free production. Excess powder can simply be reused, which contributes to sustainability.
Possible applications for powder coating
Building industry
Ideal for façade elements, window frames and balconies that need to be robust and colourfast
Furniture industry
Furniture parts, especially for outdoor use, benefit from the durable and scratch-resistant surface
Various metals for powder coating
Powder coatings are suitable for metals, including aluminium, stainless steel and steel. Each of these materials requires specific approaches that optimise the properties and end use of the component.
Metal | Corrosion protection | Mechanical resistance | Main application |
|---|---|---|---|
Aluminium | high | medium | Construction industry, automotive industry, furniture industry |
Stainless steel | very high | high | Architecture, food industry, mechanical engineering |
Steel | high | very high | Construction, mechanical engineering, automotive engineering, furniture industry |
Zinc | medium | high | Mechanical engineering, electronics, automotive engineering |
Copper | medium | medium | Electronics, interior design, sanitary facilities |
The surface quality of the different types of metal is improved by powder coating, depending on the intended requirement. Be it for increased corrosion resistance, better abrasion resistance or visual refinement.
Powder coating requirements for various metals
Aluminium
Aluminium is light and flexible, but susceptible to a wide range of environmental influences. The powder coating reinforces the surface and protects it from corrosion, scratches and weathering.
Stainless steel
Stainless steel is known for its natural corrosion resistance. However, in particularly challenging environments or for decorative purposes, it is often additionally coated. Powder coating gives stainless steel a high-quality appearance and improves protection against aggressive chemicals and extreme weather conditions.
Steel
Steel is robust, but its susceptibility to rust and corrosion makes a protective coating essential. Powder coating is a cost-effective method of maximising the durability of steel in demanding applications.
Technical requirements and procedure in the powder coating process
Pre-treatment of the substrate
The metal surface is first cleaned and degreased to ensure optimum adhesion. Depending on the metal used, mechanical or chemical pre-treatments are used. For example, phosphating or sandblasting.
Powder application
The powder is sprayed onto the surface electrostatically, causing it to adhere evenly. The choice of powder is adapted to the specific requirements of the end product – for example, whether for higher temperature resistance or improved corrosion protection.
Curing
The powder-coated object is heated in a special oven, which solidifies the powder coating and creates a smooth, durable surface. Temperature and time must always be precisely determined in order to achieve optimum results.
Criteria for a high-quality powder coating
Certain requirements must be met for successful and durable powder coating:
Suitable powder coating system
Consistent quality is achieved through even powder distribution and precise temperature control.
Optimised curing conditions
Maintaining optimum temperatures and curing times prevents defects and extends shelf life.
Careful powder selection
Depending on the application requirements, different types of powder coating are used, for example for corrosion protection, chemical resistance or special optics.
Sustainable coating solutions from FreiLacke
Powder coating at FreiLacke combines environmental friendliness, versatility and industrial efficiency. As a leading supplier, FreiLacke offers a wide range of high-quality coatings developed in-house that are tailored to a wide variety of requirements. The powder coatings used do not require solvents and therefore offer an environmentally friendly alternative to wet painting.
Discover our powder coating solutions
Cost-efficient, environmentally friendly and highly durable.
Unsere Fokusthemen als Lackhersteller
Anwendungen
Industrielle Pulverbeschichtung
Korrosionsschutz
Anti-Graffiti-Schutz
