Clean-out Block for Aluminum Extrusion Machine

The dummy block is the most critical element of the aluminium extrusion process. Both the product quality and the efficiency depend on this part. 

 The dummy block's performance depends on a series of factors. E.g. on the centering adjustment of the press, the temperature and physical facture, the proper performance of the lubrication, regular maintenance etc. 

The Functions of the Dummy Block

The function of the dummy block  is used to press the softened alloy through the die. 

• To transfer the power of the press on the alloy again and again under high temperatures.
• To rapidly expand and stop at a safe limit under pressure and to leave only a thin alloy film layer on the liner surface.
• To detach from the billet cleanly after the pressing.
• Not to cause any gas entrapments. Gas entrapments may cause damages on the liner or the dummy block.
• To contribute to the solving of minor press centering problems.
• To be able to be detached and attached rapidly.
• To continue performing its task until the completion of the production process.