Kædes

Kædes, or chains, are assemblies of metal links connected to form a flexible line. They are used to transmit mechanical power, lift or secure loads, convey materials, or function as decorative elements in jewelry. In Danish, kæde is the singular noun for chain and kæder is the plural; kædes can appear as a verb form in Danish.

Industrial chains include roller chains for power transmission in engines and machinery, and link or plate chains used for lifting and hoisting. Conveyor chains move bulk materials in manufacturing. Jewelry chains vary by link pattern and finish—cable, curb, figaro, or box styles. In marine settings, anchor and mooring chains are designed for strength and corrosion resistance.

Most chains are made from steel, stainless steel, or alloy; decorative chains may use gold or silver. A chain's performance is described by pitch (distance between pins), chain width, and its working load limit. Manufacturing methods include forging, casting, or welding individual links, with heat treatment to improve strength. Some chains are coated or plated to enhance corrosion resistance or appearance.

Standards for chains are set by industry groups and national organizations, varying by use—industrial, automotive, lifting, maritime, or jewelry. Proper maintenance—regular inspection for wear, elongation, corrosion, and damaged links—helps prevent failure. Lubrication and cleaning extend life for mechanical chains; damaged chains should be retired and replaced.