The development of industrial aluminum extrusion production to today, the form can be described as a wide variety, each with its own characteristics, each play its due role in production.

According to the relationship between the outflow direction of industrial aluminum extrusions and the direction of movement of extrusion shafts, it can be divided into forward extrusion and reverse extrusion, and the same direction is the positive extrusion, and the opposite direction is the reverse extrusion. For the same tonnage extruder, the extrinsic circle for extrusion of industrial aluminum profiles is larger than that of back extrusion aluminum profiles, but the quality of back extrusion profiles is better than that of extruded profiles. This issue will be discussed in detail later.

According to the ingot billet extrusion temperature can be divided into hot extrusion cold extrusion. The ingot is heated to a certain temperature and extruded as hot extrusion. The ingot is extruded at room temperature to be cold extruded. The hot extrusion can save the extrusion force, and the aluminum profile product has high mechanical properties; the cold extrusion surface has good quality and high dimensional accuracy.

According to the direction of the outflow of industrial aluminum profiles can be divided into vertical extrusion and horizontal extrusion. Vertical extrusion products have a short length and low production efficiency, but the wall thickness deviation during the production of pipes is small; horizontal extrusion production of aluminum products is long and easy to operate.

    According to the activity of punching needles when extruding aluminum pipes, it can be divided into fixed needle extrusion and follow-up needle extrusion. During the extrusion process, the extrusion needle does not move with the fixed needle as the movement of the extrusion shaft, and the extrusion needle advances with the extrusion shaft and follows the follower needle extrusion. Fixed pin extrusion wall thickness accuracy is high, can produce thick-walled pipe; Follow-up pin extrusion due to the extrusion pin taper, the resulting pipe thickness changes, and the production of thick-walled pipe products is too short, low yield.

    In the production of aluminum pipes, perforated extrusions and shunt extrusions can be classified according to the holes in the ingot and the holes. Perforated extrusion has a wide range of applications. Both soft and hard alloys can be produced with good organization and performance. The split die extrusion is only applicable to soft alloys, and there are welds in aluminum profiles, but the dimensional accuracy is high. The production of hollow profiles also uses splitters. extrusion. The shunt module is divided into a bridge shunt and a plane shunt. The bridge shunt is mostly used for the extrusion of hollow aluminum profiles with large flow split ratios or hard alloys, and the flat flow distribution is used for extrusion of soft alloys, relatively small shunted pipes and hollow aluminum profiles.

    In addition, there are effective friction extrusion, ie continuous extrusion, extrudable tubes, rods, and profiles of soft alloys. Currently used for small-size, thin-walled pipes for the extrusion of soft alloys; there will be quenching and extruding Connected together, extruded side, quenched side, mainly used for the production of quenching materials with low sensitivity and wide quenching temperature range.