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Technical requirements for aluminum radiator profiles extrusion

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Update time : 2022-12-01 18:51:31
1. Reduce crush pressure
The extrusion pressure should be reduced as far as possible in order to prevent mold broken teeth, and the extrusion pressure is related to the length of the ingot, the deformation resistance of the alloy, the state of the ingot, the degree of deformation and other factors. Therefore, the cast rod of the extruded aluminum radiator profiles should not be too long, about 0.6-0.85 times the length of the normal cast rod. Especially in the mold test and extrusion of the first casting rod, in order to ensure the smooth production of qualified products, it is better to use a shorter casting rod, that is, the length of the normal casting rod (0.4-0.6) times to test the mold. For complex aluminum radiator profiles, besides shortening the length of the casting rod, it is also considered to use pure aluminum short casting for the first test extrusion. After successful extrusion, normal ingots are used for extrusion production.
2. Extrusion process
The key to the production of aluminum radiator profiles is the first test of the extrusion mould. If possible, you can first do a simulation test on the computer to see if the working belt of the mould design is reasonable, and then test the mould on the extrusion machine. The first die test is very important. The operator should let the main plunger press forward at a low pressure of less than 8MPa. It is best to use a flashlight to look after the exit of the mold. When continuing extrusion after successful mold test, attention should be paid to controlling extrusion speed to ensure smooth operation. When producing aluminum radiator profiles, attention should be paid to the heating temperature of the mold to make the mold temperature close to the ingot temperature. If the temperature difference is too large, because of the slow extrusion speed, the temperature of the metal will drop, easy to produce the phenomenon of blocking mold or uneven flow rate.
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