Novel die for continuously extruding aluminum pipes, aluminum alloy pipes and special-shaped hollow profiles

Abstract

The invention relates to a novel die for continuously extruding aluminum pipes, aluminum alloy pipes and special-shaped hollow profiles, comprising a die arranged in a cavity in an integral structure. A front deflector of the die, which is provided with at least three special-shaped shunt holes, is connected with an upper die of the die; the shunt holes of the front deflector form an inclined angle; a die core arranged on the upper die forms the inside diameter of a pipe, and a lower die connected with the upper die is provided with a welding cavity and a mold; the shunt holes of the front deflector form the angle of 18-20 degrees; the upper die and the lower die of the die are positioned by pins and are connected by screws; the die is connected with the cavity by a locking nut; the diameters of the upper die and the lower die are from 60*52-0.1mm to 60*52+0.1mm; and the mold and the die core are made of hard alloy materials. The invention improves the production efficiency of the aluminum alloy extrusion pipes or the special-shaped profiles by approximate 15 percent, decreases the production cost, prolongs the service life longer than twice, can produce the aluminum alloy pipes and the special-shaped profiles in various shapes and specifications and has good product quality and wide economic benefits.

Description

technical field [0001] The invention relates to a die, in particular to a new die for continuously extruding aluminum and aluminum alloy pipes and special-shaped hollow profiles. Background technique [0002] With the rapid development of the national economy, the continuous improvement of people's living standards and the advancement of science and technology, the market demand for aluminum and aluminum alloy small and medium-sized pipes and special-shaped profiles is increasing, and the requirements for welding lines and surface quality are getting higher and higher. , the accuracy requirements are getting stricter, the extrusion speed requirements are getting faster and faster, and the tool life requirements are getting higher and higher. [0003] At present, the vast majority of small-tonnage and low-watt extrusion machines at home and abroad still produce small and medium-sized aluminum and aluminum alloy pipes and special-shaped hollow profiles. Not only the production...

AI Technical Summary

Problems solved by technology

[0006] 1. The combined structure of the cavity and the mold is not convenient for the introduction and flow of the aluminum billet, and the resistance is large, the cavity is easily damaged, and the service life is short

[0007] 2. The inlet of the front deflector of the mold is at right angles, the resistance is large, the metal is not easy to flow, and the flow is uneven

[0008] 3. The diversion hole is a two-hole structure, the diversion ratio is small, and the metal distribution and flow rate are uneven

[0009] 4. The size of the upper and lower molds is too small, the mold strength is low, and it is easy to damage

[0010] 5. The mold is put into the cavity, and then the extrusion gap between the mold core and the mold is manually adjusted to be consistent with the required extrusion profile section, which requires high skills for the operator and low work efficiency, and manual operation is easy to damage the mold and Cavity, there is technical instability, resulting in a short service life

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