feltsveising

Feltsveising, known in many languages as fillet welding, is a welding method used to join two pieces that intersect at an angle, such as in T-, corner, or lap joints. The weld bead forms a fillet with a roughly triangular cross-section along the intersection, rather than filling the entire gap between parts. It is one of the most common welding joints in fabrication due to its simplicity and versatility for sheet metal and structural components.

Fillet welds are used on various joint geometries, including T-joints, corner joints, and lap joints. They do not require full edge preparation or groove welding, making them suitable for a wide range of thicknesses and production speeds. The strength of a fillet weld depends on the leg length (the size along each member) and the throat thickness (the shortest distance between the weld root and the weld face). Design and fabrication standards specify acceptable sizes, lengths, and tolerances for different applications.

Materials and processes: base metals such as mild steel, stainless steel, and aluminum can be joined with fillet welding. Filler metals are chosen to match or complement the base metal and service conditions. Fillet welds can be produced by several processes, including shielded metal arc welding (SMAW), gas metal arc welding (GMAW/MIG), and tungsten inert gas welding (GTAW/TIG).

Quality and inspection: fillet welds are routinely inspected visually and may be subjected to nondestructive testing (radiography, ultrasonic testing, dye penetrant) or destructive testing when required. Common defects include lack of fusion, undercut, cracks, and misalignment.

Applications and safety: widely used in construction, automotive, machinery, and piping. Proper ventilation, PPE, and process control are essential for safe and effective fillet welding.