Based on heat generation and forming principles, welding technologies are mainly divided into arc welding, solid-state welding and advanced precision welding, which cover almost all mainstream Applications and welding processes in factory production and on-site construction.
1.1 Arc Welding (Most Widely Used Process Category)
Arc welding relies on electric arc high temperature to melt base metal and filling materials, with flexible equipment suitable for manual operation, semi-automatic processing and robotic automatic production.
SMAW Stick Welding: Portable equipment without gas protection, adapted to outdoor windproof operation, mainly used for field maintenance, steel structure construction and emergency repair work.
GMAW/MIG Welding: Continuous wire feeding with gas shielding, high welding efficiency, easy to realize automation, applicable to carbon steel, stainless steel and medium-thickness aluminum alloy structural parts.
GTAW/TIG Welding: Precise heat control, few welding sputters, high weld finish, the preferred process for aerospace parts, sanitary pipelines and thin precision components.
FCAW Flux-cored Welding: Strong penetration capacity, excellent effect for thick plate welding and vertical welding, commonly used in heavy machinery and engineering equipment manufacturing.
SAW Submerged Arc Welding: Automatic submerged flux protection, ultra-high efficiency for long straight welds, widely applied in pressure vessels, ship hull plates and wind power tower processing.
1.2 Solid State Welding
No melting occurs on the base metal during welding, with small workpiece deformation and stable joint mechanical performance.
Resistance spot welding: Mass assembly of automobile body sheet metal;
Friction stir welding: Non-melting connection for aluminum alloy hulls and rail vehicle carriages;
Ultrasonic welding: Micro joining for new energy battery terminals and electronic wire harnesses.
1.3 High-End Advanced Welding
Laser welding and electron beam welding feature concentrated energy, narrow heat affected zone, suitable for new energy battery sealing, aerospace special alloy and miniature electronic component precision welding.