kaarihitsaustavat

Kaarihitsaustavat refer to a group of welding processes that utilize an electric arc to generate heat for melting and joining metals. These methods are widely used in various industries due to their versatility and efficiency. The fundamental principle involves creating an arc between an electrode and the workpiece, which melts the base material and often a filler material, forming a molten pool that solidifies into a weld.

One of the most common kaarihitsaustavat is shielded metal arc welding (SMAW), also known as stick welding. In SMAW, a consumable electrode coated with flux is used. The flux melts and vaporizes, creating a shielding gas that protects the molten weld pool from atmospheric contamination. Another prominent method is gas metal arc welding (GMAW), often called MIG (Metal Inert Gas) or MAG (Metal Active Gas) welding. GMAW uses a continuously fed consumable wire electrode and a shielding gas supplied externally. The type of shielding gas used, whether inert or active, determines whether it's MIG or MAG welding and influences the weld properties.

Gas tungsten arc welding (GTAW), or TIG (Tungsten Inert Gas) welding, is another significant kaarihitsaustavat. GTAW employs a non-consumable tungsten electrode and an inert shielding gas. A separate filler rod may be added to the weld pool if required. This process is known for producing high-quality, precise welds, often used for materials like aluminum and stainless steel.

Submerged arc welding (SAW) is an automated process where the arc is shielded by a layer of granular flux. This flux melts to form slag, protecting the weld pool and also contributing to weld metal properties. SAW is typically used for thick materials and long welds, offering high deposition rates. Each kaarihitsaustavat has specific advantages and applications depending on the material, thickness, required weld quality, and production volume.