Keevitaja

Keevitaja is a tradesperson who performs welding, joining metal parts by applying heat, sometimes with filler material. Welders work in manufacturing, construction, shipbuilding, automotive repair, and maintenance, and may specialize in alloys such as steel, aluminum, or stainless steel. They interpret drawings, prepare joints, cut and fit pieces, and choose appropriate welding processes to achieve a sound joint.

Common welding methods include arc welding (MMA/SMAW), MIG/MAG welding (GMAW), TIG welding (GTAW), flux-cored arc welding (FCAW), and plasma or laser welding. The choice depends on material, thickness, required strength, and production speed. Welders may also perform post-weld inspection, cleaning, and sometimes heat treatment.

Tools and equipment include welding machines, power sources, protective gear (helmet with auto-darkening, gloves, and flame-resistant clothing), clamps, measuring tools, and fume extraction. Safe operation is essential due to risks such as burns, electric shock, UV radiation, and hazardous fumes, so ventilation, PPE, and adherence to safety standards are required.

Training typically combines classroom instruction with hands-on practice. In many regions, becoming a keevitaja requires completing a vocational program or apprenticeship and obtaining welder qualification tests and Welding Procedure Specifications. Ongoing continuing education and requalification are common to reflect new processes and materials.

Employment prospects vary by sector but generally include metal fabrication shops, construction sites, shipyards, and maintenance departments. Skilled welders with certifications and specialization in high-demand processes often have opportunities for advancement.