What is Aluminum Extrusion Press Machine principle and common faults

The principle of the extruder:

The extrusion form can be divided into electric extrusion, pneumatic extrusion and hydraulic extrusion.

Electric extrusion is to push and pressurize through the rotation of the screw rod. Pneumatic extrusion is pressurized by a compressed gas driven cylinder.

Hydraulic is the use of a pump to force the liquid to pressurize and drive the plunger to rise and pressurize.

Common malfunctions:

Pneumatic faults are generally such as damage to the solenoid valve, leakage of the cylinder seal or inflexibility of the piston telescopic rod.

Hydraulic faults are generally hydraulic pump, pump blade, solenoid valve damage, solenoid valve, plunger seal oil leakage and other faults

Aluminum extrusion machines are divided into two types: forward extrusion and reverse extrusion. At present, most of them use forward extrusion machines. The scientific principle is the principle of hydraulic press.

To analyze from the structure of the extruder: we usually divide the extruder into three parts: the main cylinder, the middle plate (extrusion barrel), and the extrusion rod. The master cylinder is a hydraulic device. The hydraulic oil transmits pressure to the small piston through the large piston, pushes the extrusion rod, and pushes the heated aluminum rod into the extrusion barrel. After reaching the exhaust pressure, the extrusion barrel retreats to exhaust, and then advances to the mold The cavities are joined, and after the extrusion pressure is reached, the extrusion rod advances at the same time to send the aluminum in the extrusion barrel into the shunt hole of the mold, and the aluminum alloy slowly flows out through the mold for molding.