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Aluminium Extrusion Working Principle: During extrusion, under the strong extrusion force, the ingot is divided into several strands of metal by the knife (bridge part) of the mold and flows into the mold welding chamber. Under the conditions of high temperature, high pressure and high vacuum, the metal is re-welded and flows from the die hole to the needle. It flows out from the formed gap to form a hollow product of the required shape and size. The number of welds in the product is the same as the number of strands of metal flow. The Main Advantages of Hollow Mold 1.It can extrude hollow profiles or pipes with double-hole or multi-hole inner chambers, and can also produce multiple hollow products at the same time, so the production efficiency is high, which is difficult or even impossible to achieve with bridge tongue molds; 2.It can extrude semi-hollow profiles with large cantilever be…

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