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Production method for L-shaped unequal-wall-thickness profile

A production method, L-shaped technology, which is applied in the field of aluminum alloy extrusion production and wall thickness profile production, can solve the problems of affecting production rhythm, excessive deformation of profile thin-walled end gap, poor stability, etc., to improve production efficiency and mold service life , Dimensional accuracy and use performance are qualified, and the effect of high-precision extrusion production

Active Publication Date: 2015-12-09
CHINA ZHONGWANG
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Problems solved by technology

[0002] At present, L-shaped aluminum alloy profiles are usually produced by die extrusion, which is acceptable for the production of L-shaped aluminum alloy profiles with equal wall thickness, but for L-shaped aluminum alloy profiles with unequal wall thickness, especially the extruded The cast ingot is made of hard aluminum alloy of 5A05 material. The L-shaped profile with unequal wall thickness produced by the existing extrusion die will cause twisting, In the case of bending and corner deformation, and the flow velocity inside and outside the thin-walled end of the profile is inconsistent, there will be out-of-tolerance deformation in the gap (such as figure 1 shown)
However, for the twisting deformation that occurs, if it is stretched and corrected (the stretching deformation is controlled at 0%-0.5%, not too large), the twisting deformation will be basically eliminated. However, when it is tested on the platform, its The amount of deformation will become larger if the gap is out of tolerance
Therefore, the traditional production method restricts the production of L-shaped profiles with unequal wall thickness, which has the disadvantage of poor stability, which in turn affects the production rhythm of subsequent cooling, orthopedic and other finishing processes, and the production efficiency is low. For large-scale production of profiles, it is necessary to design a method that can eliminate defects such as profile waves, bending, and twisting deformation, so as to ensure that the profile dimensions are qualified and at the same time realize the long-length production process of profiles

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  • Production method for L-shaped unequal-wall-thickness profile
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  • Production method for L-shaped unequal-wall-thickness profile

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Embodiment Construction

[0021] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

[0022] Such as figure 2 As shown in the production process flow, the present invention provides a production method for L-shaped profiles with unequal wall thickness, the main steps of which include: first, using the ingot as the original billet; then, sending the ingot into the extrusion molding process, Extruded into L-shaped profiles with unequal wall thickness, and obtained L-shaped finished extrusions by shearing; then, the L-shaped finished extrusions were sent to the cooling device for cooling; finally, the cooled L-shaped finished products were extruded The parts are sent to the roller pressing orthopedic process, and the final product is obtained after the ort...

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Abstract

The invention discloses a production method for an L-shaped unequal-wall-thickness profile, and belongs to the technical field of metal machining. The production method mainly includes the steps of firstly, using a cast ingot as an original blank; secondly, sending the cast ingot into the extrusion forming procedure to be extruded into the L-shaped unequal-wall-thickness profile, and conducting shearing to obtain a finished L-shaped extrusion part; thirdly, sending the finished L-shaped extrusion part into a cooling device to be cooled; fourthly, sending the cooled finished L-shaped extrusion part into the roll-in shape correcting procedure, and obtaining a final product through shape correction and conducting the postprocessing procedure. By means of the method, wavy, bent and twisted deformation and other defects of the L-shaped unequal-wall-thickness profile can be eliminated, the size accuracy and the use performance of the profile are improved, the production efficiency of extrusion is improved, the mold service life is prolonged, the production period is shortened, the long ruler production process, including long ruler extruding, long ruler cooling and long ruler shape correcting, of the L-shaped unequal-wall-thickness profile is achieved, and remarkable economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of metal processing, and in particular relates to aluminum alloy extrusion production, in particular to a production method of L-shaped profiles with unequal wall thickness. Background technique [0002] At present, L-shaped aluminum alloy profiles are usually produced by die extrusion, which is acceptable for the production of L-shaped aluminum alloy profiles with equal wall thickness, but for L-shaped aluminum alloy profiles with unequal wall thickness, especially the extruded The cast ingot is made of hard aluminum alloy of 5A05 material. The L-shaped profile with unequal wall thickness produced by the existing extrusion die will cause twisting, In the case of bending and corner deformation, and the flow velocity inside and outside the thin-walled end of the profile is inconsistent, there will be out-of-tolerance deformation in the gap (such as figure 1 shown). However, for the twisting deformation that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/00B21C23/00
Inventor 郑永帅徐鑫于长富刘兆伟吴楠李莉
Owner CHINA ZHONGWANG
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