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Knowledge of Aluminum Extrusion Machines

May 16, 2023

How high is the pressure adjustment of the extruder blade pump? When the pressure of the blade pump of the aluminum profile extrusion machine reaches 100, the noise is particularly loud, and there is almost no noise at 70-80. What is the reason? The pressure of the extruder blade pump is generally not greater than 16MPa, and it can be used normally between 10 and 14, depending on the key position. When the pressure of the blade pump of the aluminum profile extrusion machine reaches 100, the noise is particularly loud, and there is almost no noise at 70-80. This requires checking whether the action of the blade pump during oil supply is normal. It is relatively easy to repair if it's just damage to the pump. Professional maintenance personnel only need to remove the damaged oil pump and replace it with a new pump core. What is the better hardness of the aluminum profile extrusion machine mold pad? For the extrusion machine mold pad, the pad used for the transition between the mold and the machine tool surface does not need to be too hard, but it needs to have sufficient thickness and area. If the pad is too hard, it will damage the machine tool surface. The specific amount depends on the tons of extruder used. Then select the appropriate material for the mold pad. Suggestion: The base plate in the mold should be Cr12MoV and quenched to 55HRC. The material recommended for the base plate between the machine tools used for molds is 40Cr, with a large area and thickness. The hardness should be quenched and tempered with a hardness of 28HRC. This can protect the machine tool table from damage. What's wrong with the stuffiness of the aluminum extrusion machine? How should we handle this problem? When the extruder is unable to extrude the profile under the maximum working pressure, commonly known as the stuffiness, there are many reasons for the stuffiness of the extruder, such as low temperature of the aluminum rod, low temperature of the extrusion cylinder, low extrusion speed, and low temperature of the grinding tool. If any of the above conditions cause the stuffiness, then we need to check the temperature setting of the extruder. Setting it too high or too low is not feasible. To effectively solve this problem, it is necessary to follow the extruder manual and have professional personnel operate it.