Hårdkrom

Hårdkrom, also known as hard chrome plating, is a surface treatment process that deposits a thick layer of chromium onto a substrate, typically metal. This process is distinct from decorative chrome plating, which is much thinner and primarily for aesthetics. Hårdkrom is applied using electroplating, where the part to be coated is immersed in a chromic acid solution and connected to an electrical current. The chromium ions from the solution are attracted to the negatively charged part, forming a hard, durable layer.

The primary benefit of hårdkrom is its exceptional hardness, which translates to increased wear resistance and reduced friction. This makes it ideal for components subjected to high stress and abrasion, such as hydraulic cylinders, engine parts, molds, and cutting tools. Hårdkrom also offers excellent corrosion resistance, protecting the underlying material from rust and chemical attack. The thickness of the hårdkrom layer can be precisely controlled, allowing for customization based on the specific application requirements. While it is a robust coating, it can be prone to chipping or cracking under extreme impact. The process itself requires careful handling of chromic acid, which is a hazardous substance, necessitating strict safety protocols and environmental considerations.