The extrusion temperature of
industrial aluminum profiles is an important process parameter in the extrusion production process. In order to reduce the deformation resistance of metal and reduce the extrusion pressure, it is necessary to increase the extrusion temperature of
industrial aluminum profiles. However, when the extrusion temperature is increased to a certain temperature, hot brittleness is prone to occur, leading to defects such as cracks. In order to avoid this phenomenon, in order to increase the extrusion speed, it is necessary to lower the extrusion temperature. These two conditions are contradictory. In order to reduce the deformation resistance and at the same time use a larger extrusion speed, it is necessary to select a good metal plastic temperature range. However, in the extrusion production process of industrial aluminum profiles, friction between the metal and the extrusion cylinder lining, die, gasket, and the deformation of the metal itself will cause the temperature of the metal to rise, often breaking the predetermined extrusion temperature range. The experimental results show that during the entire extrusion process, the extrusion temperature gradually increases, and the extrusion speed increases with the decrease of the ingot metal content. Therefore, due to the increase of the extrusion temperature and the acceleration of the extrusion speed, cracks often appear at the ends of industrial aluminum products. The increase of extrusion temperature during the extrusion process is related to the properties of industrial aluminum profiles and extrusion conditions. For industrial aluminum profiles, the temperature difference before and after the die exit is between 10℃ and 60℃. In order to keep the extrusion temperature within the temperature range where the metal has good plasticity during the extrusion of industrial aluminum profiles, isothermal extrusion can be performed. This is a new process that engineers and technicians have explored over the years. In order to realize isothermal extrusion, each link of the extrusion process can be automatically adjusted. For example, the temperature of the ingot and the temperature of the extrusion tube can be heated gradient, the die can be cooled, the temperature can be adjusted, and the extrusion speed can be automatically changed, or it can be used Isokinetic extrusion. In addition, after changing the mold, due to the change of the extrusion coefficient, the above conditions can also be adjusted accordingly. It can be seen that the realization of isothermal extrusion of industrial aluminum profile profiles is a very complicated process. At present, the steel ingot adopts the gradient heating method to achieve approximate isothermal extrusion, which greatly improves the extrusion speed and product quality. With the development of computer and digital programming technology in the industry, modern extruders have also been updated, equipped with FI-controlled constant-speed extrusion and TIPS-controlled constant-temperature extrusion. As long as the operator selects the button, according to the automatic programming technology of the equipment, the desired constant-speed extrusion or constant-temperature extrusion can be obtained.
However, with the increased prevalence of custom aluminium extrusion, it has become far more affordable.
The expert engineers of Zeyi Aluminum Co., Ltd. always develop with utmost precision so that all quality standards are met during the production. we are looking forward to becoming a trusted supplier of customers. visit us at Zeyi
Aluminum Profiles.
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Aluminum Profiles.
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