Aluminum extrusion presses are divided into forward extrusion and reverse extrusion. At present, most of them use forward extrusion machines. The scientific principle is the principle of hydraulic press. From the analysis of the structure of the extruder, we usually divide the extruder into three parts: the master cylinder, the middle plate (squeeze barrel),and extruded rod.
The master cylinder is a hydraulic device. The hydraulic oil is transmitted to the small piston through the large piston, and the extrusion rod is pushed. The heated aluminum rod is pushed into the extrusion barrel to reach the exhaust pressure, and then the barrel is retracted and exhausted, and then the mold is advanced. After the cavity is joined, after the output pressure is reached, the extrusion rod advances at the same time, and the aluminum in the extrusion barrel is sent into the mold diversion hole, and the aluminum alloy slowly flows out through the mold.
