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On-line bending and forming device of three-dimensional variable-radian extrusion profile

A technology of bending, forming and extruding profiles, applied in quenching devices, heat treatment equipment, manufacturing tools, etc., can solve the problems that three-dimensional variable arc profiles are difficult to successfully implement and ensure the dimensional accuracy of products, so as to improve the utilization rate of materials and shorten the processing process. , the effect of reducing manufacturing costs

Active Publication Date: 2013-09-18
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The above extrusion-bending integrated processing methods all use the uneven flow of metal in the mold or use a guiding device at the outlet of the horizontal extruder to process single-curvature bending profiles, which are difficult to successfully implement for three-dimensional variable-radius profiles. and guarantee product dimensional accuracy

Method used

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  • On-line bending and forming device of three-dimensional variable-radian extrusion profile
  • On-line bending and forming device of three-dimensional variable-radian extrusion profile
  • On-line bending and forming device of three-dimensional variable-radian extrusion profile

Examples

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Embodiment 1

[0039] Example 1: With the method of the present invention, install the described three-dimensional variable radian extruded profile online bending forming device at the outlet of the 2750T extruder (see figure 1 ), Figure 4 Shown is the cross-section of the extruded profile, the material is 6061 aluminum alloy, the diameter of the extruded billet is 198mm, and the length is 500mm. The initial extrusion temperature of the billet is 480°C, the initial temperature of the extrusion die and extrusion pad is 450°C, the initial temperature of the extrusion cylinder is 430°C, the speed of the extrusion rod is 4mm / s, the extrusion ratio is 25, and the quenching medium is water cooling. After the metal billet is extruded out of the die by the extruder, it is corrected by the guide roller to ensure the straightness of the profile, and passes through the online quenching device smoothly. According to the cross-sectional shape of the profile, adjust the water flow velocity of the uppe...

Embodiment 2

[0040] Example 2: With the method of the present invention, a pair of three-dimensional variable arc extruded profile online bending forming device is arranged at the outlet of the 800T extruder (see figure 1 ). Figure 6 shows the section of the extruded profile, the material is AZ31 magnesium alloy, the diameter of the extruded billet is 120mm, and the length is 210mm. The initial extrusion temperature of the billet is 380°C, the initial temperature of the extrusion die and extrusion pad is 360°C, the initial temperature of the extrusion barrel is 380°C, the speed of the extrusion rod is 1mm / s, the extrusion ratio is 50, and the quenching medium is air-cooled. The applied pressure of the hydraulic closed loop is 210N. After the metal billet is extruded out of the die by the extruder, it is corrected by the guide roller to ensure the straightness of the profile, and passes through the online quenching device smoothly. According to the cross-sectional shape of the profile, ...

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Abstract

The invention discloses an on-line bending and forming device of a three-dimensional variable-radian extrusion profile, which belongs to the fields of metal plastic processing technologies and equipment. An on-line quenching device, multi-roll bending equipment and a hydraulic guiding device are arranged in sequence behind a mold outlet of a horizontal extruder. The quenching medium and the quenching rate of the quenching device are reasonably adjusted according to the alloy types, the section shapes, the wall thickness, the extrusion speed and the like of the extrusion profile, so that the temperature of a bending and deforming area of the profile is controlled to be between 250-350 DEG C, the profile has good bendability and deformability in the subsequent two-dimensional and three-dimensional two-pass bending processing process, the bending springback is overcome, and simultaneously, the section collapse and the surface scratch of the profile due to overhigh temperature can be prevented; since a control system accurately controls the positions, the applied force and the retention time of all passes of pressing rolls and a guiding device of rolling and bending equipment, the on-line bending processing of the three-dimensional variable-radian profile is realized, the processing flow is shortened, the material utilization rate increases and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of metal plastic processing technology and equipment, in particular to an online bending and forming device for three-dimensional variable arc extruded profiles. Background technique [0002] The rapid development of the transportation industry is also facing problems in energy consumption, emissions and environmental protection. Focusing on sustainable development in the future, low fuel consumption and low emission technologies have become key technologies that need to be solved urgently in the development of the world's transportation industry. Automobile lightweight is widely considered to be the most effective way to achieve energy saving and emission reduction. Aluminum alloy has a series of advantages such as high specific strength, high specific stiffness, good energy absorption performance, and easy recycling. It is an ideal material for automobile lightweight. The all-aluminum space frame body structure ha...

Claims

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Application Information

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IPC IPC(8): B21C23/21B21D7/08C21D1/667
Inventor 李落星刘志文王冠
Owner HUNAN UNIV