The main control points of aluminum rod extrusion production technology are three temperature, extrusion speed, tractor speed, extrusion rod speed, quenching and annealing. In order to improve the efficiency of aluminum extrusion production, good equipment is also the key, especially the aluminum extrusion machine, aluminum rod heating furnace, mold heating furnace these three big parts, the other most important is to have a good extrusion factory and extruder.
Outlet temperature of aluminum rod Optimum extrusion temperature Traction machine speed extrusion rod speed, die temperature filling cylinder temperature quenching temperature alloy form aging optimum metal physical properties achieved yield production efficiency Heat analysis Aluminum bar and aluminum bar should be pre-heated before extrusion to reach a temperature close to the fuse line, so that the magnesium in the aluminum bar can melt and flow evenly in the aluminum material. When the aluminum rod is put into the extruder, the temperature does not change much.
And when the extruder is started, the huge extrusion force of the extrusion rod will soften the aluminum material by the mold hole extrusion, produce a lot of friction, the friction is converted into temperature, so that the extrusion profile temperature exceeds the melting line temperature, at this time, and magnesium melting, to flow around, extremely unstable, the improvement of grace must not be higher than the solid solution phase line, otherwise aluminum will melt, and the profile can not be formed, Aluminum bar temperature should be kept between 400-540℃, preferably 420-440℃, too high will cause tearing phenomenon, too low will reduce the extrusion speed, extrusion friction most will be converted into heat, resulting in temperature rise, temperature rise and extrusion speed and extrusion pressure is proportional.
The above is all the content of the extrusion process in the production process of aluminum rod. I hope it will be helpful to you. If you have better technical comments or suggestions, please contact us.