Forming process of aluminum alloy pipe and aluminum alloy pipe

A technology of aluminum alloy tube and forming process, which is applied in the forming process of aluminum alloy tube and the field of aluminum alloy tube, which can solve the problem that the surface brightness of aluminum alloy tube is difficult to adapt to high-precision special devices, the surface roughness of aluminum alloy tube is high, and the performance of strengthening layer Problems such as uneven layers can be achieved to improve surface quality and performance, excellent comprehensive mechanical properties, and reduce surface damage

CN109433851AInactive Publication Date: 2019-03-08南通长海铝业有限公司
5 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-03-08
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention belongs to the technical field of aluminum alloy pipe processing, and relates to a forming process of an aluminum alloy pipe and the aluminum alloy pipe. The forming process of the aluminum alloy pipe comprises the following steps that an aluminum alloy raw material is extruded to obtain an aluminum alloy pipe blank; the obtained aluminum alloy pipe blank is drawn, and then annealingtreatment is carried out; and after the obtained aluminum alloy pipe blank is completed annealed, cold drawing is carried out again, the deformation amount of the outer diameter of the pipe in the cold drawing process is less than 5%, and thus a finished product of the aluminum alloy pipe is obtained. According to the forming process of the aluminum alloy pipe and the aluminum alloy pipe, the process is simple, the implementation is easy, and the surface quality and service performance of the material can be simultaneously increased on the premise of not changing the mechanical properties ofthe material.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of aluminum alloy tube processing, and in particular relates to a forming process of an aluminum alloy tube and the aluminum alloy tube. Background technique

[0002] Aluminum alloy has the characteristics of high specific strength and specific stiffness, good plasticity, good thermal conductivity and easy recycling. It is the most widely used non-ferrous metal structural material in industry. , electronic products or chemical industry and other fields have been widely used.

[0003] Aluminum alloy tubes can be divided into seamless aluminum tubes and ordinary extruded aluminum tubes according to the extrusion method; they can be divided into ordinary aluminum tubes and precision aluminum tubes according to the precision, and the precision aluminum tubes generally need to be reprocessed after extrusion, such as cold Refreshments. Aluminum alloy precision tubes are widely used in various industries of natio...

Examples

Embodiment 1

[0087] A forming process of an aluminum alloy tube, comprising the following steps:

[0088] Extrude through the die first to get the aluminum alloy tube billet, then pass through the die, use the outer mold and the inner film to reversely extrude the wall thickness of the aluminum alloy tube billet, and before the reverse extrusion, the outer surface of the tube billet Evenly apply a layer of lubricant to reduce the diameter and wall thickness of the tube blank, and initially obtain an aluminum alloy tube with precise dimensions;

[0089] Then clean it. After cleaning, use the heat treatment high-temperature walk-in furnace to perform rapid annealing in the temperature range. The annealing temperature in the high-temperature range is 420°C for 10 minutes, and rapid cooling with water mist is performed to soften the aluminum alloy. After complete annealing, use The outer mold is cold drawn separately to reduce the outer diameter.

[0090] Among them, the outer model used is a...

Embodiment 2

[0092] A forming process of an aluminum alloy tube, comprising the following steps:

[0093] Extrude through the die first to get the aluminum alloy tube billet, then pass through the die, use the outer mold and the inner film to reversely extrude the wall thickness of the aluminum alloy tube billet, and before the reverse extrusion, the outer surface of the tube billet Evenly apply a layer of lubricant to reduce the diameter and wall thickness of the tube blank, and initially obtain an aluminum alloy tube with precise dimensions;

[0094] Then clean, after cleaning, use heat treatment high-temperature walk-in furnace to perform rapid annealing in the temperature range. The annealing temperature in the high-temperature range is 450°C for 15 minutes, and rapid cooling with water mist is performed to soften the aluminum alloy. After complete annealing, use The outer mold is cold drawn separately to reduce the outer diameter.

[0095] Wherein, the making material of outer mold is ...