Forging, casting, aluminum extrusion, and metal injection molding are four common metal forming processes.
Forging increases metal density and strength through high-pressure deformation, making it ideal for high-strength parts like automotive crankshafts.
Casting involves pouring molten metal into molds to create complex shapes and large components, offering lower costs.
Aluminum extrusion heats and presses aluminum through dies to form specific cross-sections, making it suitable for mass-produced, elongated products like window frames and heat sinks.
Metal injection molding (MIM) is suitable for small, complex, and thin-walled metal parts. Although the mold design is more intricate, the overall cost is significantly lower than traditional machining.

Each method has its own advantages, and the optimal choice depends on the product’s structural, strength, and cost requirements.