Manufacturing 101: Impact Extrusion vs. Stamping
In the manufacturing world, different processes are used to create and shape many different designs and creations. Two of these processes are impact extrusion and stamping. In many cases, impact extrusion is more beneficial than stamping, but it is important to be aware of what they each offer and which is the best to use in different situations.
Impact extrusion allows for more definition, increasing the wall thickness and making more detailed geometry possible. Stamping has limitations and is not able to produce the same elaborate geometry, which leads to extra steps, explains Metal Impact LLC.
Impact extrusion can form strong and complex pats and pieces that are difficult to produce with stamping or other processes. Extrusion also offers a higher quality when it comes to the finished surface of the final product. (Wise Geek)
On the other hand, stamping is cost efficient, has consistent quality, and has a high processing precision according to Gotos. Another good feature stamping has leaves less scrap materials, is much quicker to set-up and gives you the ability to create more geometry in a single process according to ManorTool.com
The debate between the two is ongoing. Stamping is great for projects of a higher volume, because the cost decreases as the production numbers go up. It is however difficult to create the complexity and thickness that impact extrusion offers. It is also difficult to alter designs after stamping tools have been created. (ThomasNet). On the other hand impact extrusion’s disadvantages include product limitations and sizing variances which can cause issues in production.
There is no definitive way to decide on when to use either stamping or impact extrusion. The best time to use either one of these processes is when you are seeking a more cost efficient process with little scrapping materials then stamping is best. Impact extrusion is best for large projects needing speed, excellent cost effectiveness and strength.
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