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Deep draw stamping is a manufacturing process used to form metal sheets into a desired shape through a sequence of processes involving drawing and stretching. Here's an overview of how it works:
1. Material Preparation: Typically, the material used is a metal sheet or coil, such as steel, aluminum, or copper, chosen based on the properties required for the final part.
2. Blanking: The first step involves cutting out a flat shape (blank) from the metal sheet or coil. This blank is usually slightly larger than the final part to account for material stretching during the drawing process.
3. Drawing: The blank is placed over a die and punched into it. A punch descends and forces the material into the die cavity, shaping it into the desired form. The process involves significant material deformation and stretching.
4. Redrawing (if necessary): For parts with deeper dimensions, multiple drawing operations may be required. Each redraw operation uses a smaller punch diameter to progressively shape the part to its final depth.
5. Trimming: Once the drawing process is complete, excess material (flash) around the edges of the formed part is trimmed off.
6. Additional Operations: Depending on the part's design, additional operations such as piercing, coining, or flanging may be performed.
7. Finishing: The formed part undergoes finishing processes such as deburring, cleaning, and surface treatments (like painting or plating) to meet final specifications.
Deep draw stamping is used to manufacture a wide range of products, from simple cans and containers to complex automotive parts and household appliances. It offers advantages such as high production rates, precise dimensional control, and the ability to create parts with uniform thickness and intricate geometries.
