Production method of rectangular aluminum alloy pipe

A production method and technology for rectangular tubes, which are applied in the production field of aluminum alloy rectangular tubes, can solve the problems of metal waste, low production efficiency, and poor dimensional accuracy, and achieve the effects of overcoming poor dimensional accuracy, easy implementation, and simple operation.

Inactive Publication Date: 2016-02-10
CHONGQING XIZHONG SPECIAL ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical solution of the present invention is that the circular tube wool is annealed, then transitionally stretched, then shaped and stretched, and finally a rectangular tube with a smooth surface is obtained through straightening and tube expansion, which overcomes the large amount of metal chips that exist in the machining and stretching. The waste of metal is serious, the production efficiency is low, and the problem that only short-length rectangular tubes can be processed also overcomes the problem of poor shape and dimension accuracy in the production of rectangular tubes by extrusion process

Method used

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  • Production method of rectangular aluminum alloy pipe
  • Production method of rectangular aluminum alloy pipe
  • Production method of rectangular aluminum alloy pipe

Examples

Experimental program
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Embodiment

[0025] Embodiment, a kind of production method of aluminum alloy rectangular pipe, see figure 1 , figure 2 , image 3 , the process route is: round tube wool 1→wool annealing→transitional stretching into oval tube 2→forming and stretching into rectangular tube 3→stretching straightening→expanding tube→stretching straightening→cutting into finished products, sampling→packaging , storage.

[0026] The rectangular tube 3 is an aluminum alloy tube with a rectangular (or similar to rectangular) cross section.

[0027] The finished product in this embodiment is a large-scale rectangular thin-walled tube, that is, the diagonal length of the rectangular tube is ≥ 200 mm, the wall thickness is ≤ 10 mm, and the aspect ratio of the rectangular tube is ≥ 2. For example: 230×100×6, 240×100×5, 285×100×6 and other specifications of rectangular tubes.

[0028] Transition stretching is to stretch the round tube wool 1 into an elliptical tube 2 , and forming stretching is to stretch the el...

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Abstract

The invention relates to a production method of a rectangular aluminum alloy pipe. The production method comprises the operation procedures of performing annealing treatment on a circular pipe blank, performing transition stretching, performing shaping stretching, performing stretching and straightening, performing pipe expanding and cutting to obtain finished products. According to the technical scheme disclosed by the invention, annealing, transition stretching and shaping stretching are performed on the circular pipe blank, and finally straightening and pipe expanding treatment are performed so that the rectangular pipe with smooth surface is obtained; the problems that the metal chip quantity is large, the metal wastage is serious, the production efficiency is low, and only the rectangular pipe with shorter length can be processed existing in machining, stretching and shaping can be solved; besides, the problem of poor precision of the external dimensions existing in the rectangular pipe produced by an extruding technology is also solved.

Description

technical field [0001] The invention relates to a production method of a pipe, in particular to a production method of an aluminum alloy rectangular pipe. Background technique [0002] Aluminum alloy rectangular tubes are generally formed by machining, extrusion or stretching. However, both machining and extrusion have many disadvantages. For example, the machining process has a large amount of metal chips, serious metal waste, low production efficiency, and only short rectangular tubes can be processed. The rectangular tube produced by the extrusion process has poor shape and dimension accuracy, and can only process large-scale rectangular tubes with thicker walls (≥15mm), and because of the welded seam, the pressure-bearing capacity of the tube is insufficient. Contents of the invention [0003] The object of the present invention is to provide a production method of an aluminum alloy rectangular tube with high precision and no chips. [0004] The object of the present...

Claims

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Application Information

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IPC IPC(8): B21C37/15
CPCB21C37/15
Inventor 韩正东
Owner CHONGQING XIZHONG SPECIAL ALUMINUM
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