As outlined by Market Prospects in their article, “Five Type Stamping Process To Introduce You: Milling, Machining, Die-Casting, Investment Casting, and Forging,” the metal stamping industry employs various methods to shape and form metal parts. These techniques include milling, machining, die-casting, investment casting, and forging, each suited for different materials, designs, and production needs.
Stamping typically uses mechanical or hydraulic presses with dies to shape metal parts through both shearing and bending. Mechanical presses operate at high speeds with a flywheel for energy storage, while hydraulic presses use pressurized oil to drive the piston through the stroke length. High-speed mechanical presses are commonly used for high-volume jobs, especially with progressive dies that improve precision and reduce material spring back.
Core Stamping Processes Explained:
- Investment Casting: Known as the “lost wax process,” this method forms parts by injecting wax into a mold, which is then coated with ceramic and removed, leaving a cavity for molten metal. Investment casting is ideal for complex shapes, especially in low-volume production, as it offers fine surface finishes that require minimal machining.
- Die-Casting: Similar to injection molding, die-casting injects molten metal into steel molds, forming complex parts with smooth finishes. Cold chamber machines are often used for metals with higher melting points, while hot chamber machines handle low-melting alloys. Die-casting is ideal for intricate designs, though it is best suited for metals with lower melting points.
- Forging: This process involves deforming a hot metal workpiece with a die to improve its strength and durability. Forged parts are highly resistant to shock and fatigue, making forging ideal for producing high-stress components in industries like aerospace.
- Machining: As a material removal process, machining creates precise dimensions by removing chips from a solid workpiece. While slower and less economical due to material waste, machining offers high tolerances and is often used to refine parts made by other processes.
- Milling: Milling machines are used to create shapes like slots, angles, and contours. The rotating cutting tool shapes the workpiece, allowing for complex geometries that are challenging for other methods to achieve.
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Article with all rights reserved, courtesy of Market Prospects.
