Metallkledningen

Metallkledningen refers to processes that apply a metallic layer onto a substrate to improve properties such as corrosion resistance, hardness, wear resistance, electrical conductivity, or appearance. The term can describe both metal plating, typically producing a thin coating, and metal cladding, where a substantial metal layer is bonded to a base material to form a composite with a robust exterior.

Plating methods deposit metal onto a surface. Electroplating uses an electric current to reduce dissolved metal ions onto the part, while electroless plating relies on chemical reducing agents without external current. Thin films can also be produced by physical vapor deposition (PVD) or chemical vapor deposition (CVD). Thermal spraying provides thicker coatings by projecting molten or semi-molten particles onto a surface.

Cladding refers to bonding a metal layer to another metal to create a layered structure. Common cladding methods include roll bonding, explosive welding, and diffusion bonding, sometimes followed by finishing steps. Cladding is frequently used to give a corrosion-resistant exterior to a less expensive core material.

Materials and applications vary widely. Typical metals include nickel, chromium, copper, zinc, tin, and stainless steels. Core substrates are often carbon steel, aluminum, or copper. Applications span automotive parts, fasteners, electronics, architectural facades, pipelines and tanks, and aerospace components.

Advantages and limitations must be considered. Metallkleding can markedly extend service life and reduce maintenance, but adds weight and cost, and may raise issues with adhesion, thermal expansion compatibility, or galvanic corrosion. Environmental and safety considerations include chemical handling, waste treatment, energy use, and compliance with relevant standards and regulations. Quality control typically encompasses thickness measurement, adhesion testing, and corrosion or wear testing.