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Aluminum profiles for factory what is the temperature change during extrusion

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Update time : 2023-04-18 09:16:32
In the process of extrusion production, the extrusion temperature of aluminum profiles for factory is an important process parameter. In order to reduce deformation resistance and extrusion pressure, the extrusion temperature must be increased.
However, when the extrusion temperature rises to a certain degree, it is easy to occur thermal brittle, crack and other defects. In order to prevent this phenomenon, it is necessary to reduce the extrusion temperature and increase the extrusion speed. The two conditions are contradictory, in order to reduce the deformation resistance and increase the extrusion speed, we must choose the best metal plastic temperature range.
Aluminum profiles for factory extrusion production process:
1. Friction between metal and extrusion cylinder lining, die and gasket, deformation of metal itself, etc., leads to metal temperature rise, often breaking through the pre-selected extrusion temperature range.
The results show that the extrusion temperature increases gradually during the whole extrusion process, and the extrusion speed increases gradually with the decrease of the ingot metal content. So aluminum profiles for factory products often because of extrusion temperature rise, extrusion speed and crack phenomenon.
2. The rise of extrusion temperature is related to its nature and extrusion conditions. For aluminum profiles for factory, the metal temperature difference before and after the die exit is between 10-60℃. In order to make aluminum profiles for factory extrusion production process constant extrusion temperature in the best metal plastic temperature range, it is best to use isothermal extrusion process. This is a new process that engineers have been exploring for years. The realization of isothermal extrusion requires many conditions, the extrusion process can be adjusted automatically. Such as ingot temperature, extrusion cylinder temperature can be heated according to the stage, the mold temperature can be adjusted to cool, extrusion speed can be automatically changed, or the use of constant speed extrusion.
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