焊接方式:
Four Main Types of Welding Processes
Fusion Welding
Definition:
The most common method where the workpiece interface is heated to a molten state, with or without filler material, to form a permanent bond.
Examples:
Arc Welding: Uses an electric arc (e.g., MIG, TIG) to melt the electrode and base metal.
Gas Welding: Uses a flame (e.g., oxy-acetylene) to melt materials.
Laser Welding: High-precision welding with a focused laser beam.
Electron Beam Welding: Uses a high-energy electron beam in a vacuum.
Pressure Welding
Definition:
Joins materials by applying pressure, causing atomic/molecular bonding between solid surfaces.
Examples:
Resistance Welding: Uses electric current and pressure (e.g., spot welding for car panels).
Friction Welding: Generates heat through mechanical friction (e.g., joining pipes).
Ultrasonic Welding: Uses high-frequency vibrations to bond plastics or thin metals.
Brazing/Soldering
Definition:
Uses a filler metal (lower melting point than the workpiece) to create a bond. The workpiece remains solid while the filler melts and flows into gaps.
Examples:
Flame Brazing: Uses a torch to heat the filler (e.g., copper pipes).
Induction Brazing: Heats materials via electromagnetic induction.
4. Solid-State Welding
Definition:
Joins materials without melting them, relying on pressure, heat, or both to create atomic-level bonds through microscopic deformation.
Examples:
Cold Pressure Welding: Bonds metals at room temperature (e.g., aluminum wires).
Explosion Welding: Uses controlled explosions to fuse surfaces (e.g., cladding metals).
Diffusion Welding: Heats and presses materials to allow atomic diffusion (e.g., aerospace components).
Key Takeaways
Fusion Welding: Best for high-strength joints in metals.
Pressure Welding: Ideal for mass production (e.g., automotive).
Brazing/Soldering: Suitable for dissimilar materials or delicate parts.
Solid-State Welding: Perfect for heat-sensitive or high-performance materials.
Need further simplification or specific examples? Let me know!
