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Method for integrally forming aluminum alloy equal-diameter three-way member

An equal-diameter tee, integral forming technology, used in engine components, metal processing equipment, mechanical equipment, etc., can solve the problems of high performance requirements and low material utilization, improve material utilization, reduce welding and machining Process, the effect of simplifying the process flow

Active Publication Date: 2013-08-14
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the above existing technologies that cannot meet the overall high performance requirements, low material utilization rate, and avoid defects such as cavities and folds, the present invention proposes a method for integrally forming aluminum alloy equal-diameter tees.

Method used

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  • Method for integrally forming aluminum alloy equal-diameter three-way member
  • Method for integrally forming aluminum alloy equal-diameter three-way member
  • Method for integrally forming aluminum alloy equal-diameter three-way member

Examples

Experimental program
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Embodiment 1

[0025] In this embodiment, a tee die is used to integrally form an aluminum alloy equal-diameter tee, and the formed tee includes a branch pipe 8 and a main pipe 9 . as attached figure 1 As shown, L is the height of the branch pipe, H is the depth of the main pipe, h is the depth of the branch pipe, and 0.5H<h<H, D1 is the inner diameter of the main pipe, D2 is the outer diameter of the main pipe, the inner and outer diameters of the branch pipe of the tee and the main pipe are correspondingly equal. In this embodiment, h=48mm, H=66mm, L=70mm, D1=32mm, D2=66mm.

[0026] In this embodiment, the above-mentioned tee is formed on a 40MN multi-directional die forging hydraulic press, and the specific steps are:

[0027] Step 1: Prepare the blank. The material selected in this example is 7075 aluminum alloy extruded bar. First, the bar is turned to a diameter smaller than the outer diameter of the main pipe of the tee by 1mm, that is, φ65mm, and then the blank is determined accor...

Embodiment 2

[0035] In this embodiment, a tee die is used to integrally form an aluminum alloy equal-diameter tee, and the formed tee includes a branch pipe 8 and a main pipe 9 . as attached figure 1 As shown, L is the height of the branch pipe, H is the depth of the main pipe, h is the depth of the branch pipe, and 0.5H

[0036] In this embodiment, the above-mentioned tee is formed on a 40MN multi-directional die forging hydraulic press, and the specific steps are:

[0037] Step 1: Prepare the blank. The material selected in this example is 7075 aluminum alloy extruded bar. First, the bar is turned to a diameter smaller than the outer diameter of the main pipe of the tee (0.5-1) mm, that is, φ59mm, and then according to the "volume...

Embodiment 3

[0045] In this embodiment, a tee die is used to integrally form an aluminum alloy equal-diameter tee, and the formed tee includes a branch pipe 8 and a main pipe 9 . as attached figure 1 As shown, L is the height of the branch pipe, H is the depth of the main pipe, h is the depth of the branch pipe, and 0.5H

[0046] In this embodiment, the above-mentioned tee is formed on a 40MN multi-directional die forging hydraulic press, and the specific steps are:

[0047] Step 1: Prepare the blank. The material selected in this example is 7075 aluminum alloy extruded bar. First, the bar is turned to a diameter smaller than the outer diameter of the main pipe of the tee (0.5 ~ 1) mm, that is, φ64mm, and then according to the "volum...

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Abstract

The invention discloses a method for integrally forming an aluminum alloy equal-diameter three-way member. In the method, the aluminum alloy equal-diameter three-way member is integrally formed by using a three-way die; a multidirectional active loading and forming technology is adopted, the loading and forming process is as follows: a horizontal male die moves first, side male dies move latterlyand three male dies move together to reach a final forming position. By adopting a method that the side male dies move in advance to inhibit metal from violently flowing towards a support tube die cavity, the defects in the prior art are eliminated, the one-time integral forming of the aluminum alloy equal-diameter three-way member is realized and the process flow is simplified. In the method disclosed by the invention, by coordinating the loading sequences of dies in different directions, the metal flowing in the forming process is actively controlled and the defects in causing a cavity and folding are avoided. In addition, according to the method, the welding and machining processes are reduced, the defects of the corrosion of a welding joint, the cutting off of a stream line and the like are avoided, the reliability of the member is improved, and the utilization rate of materials is increased simultaneously; and the invention has the characteristics of simpleness and convenience for operation and easiness for implementation.

Description

technical field [0001] The invention belongs to the field of hot processing and relates to the hot forming of aluminum alloys, in particular to a method for integrally forming equal-diameter tee parts of aluminum alloys by active loading in three directions. Background technique [0002] Tee fittings are a kind of important industrial parts, which are widely used in pipeline industry, petrochemical and other fields. In recent years, the development of these fields has put forward higher and more requirements for the performance of the tee, not only requiring the tee to meet greater pressure requirements, but also requiring its overall performance to be good. At present, there are three main production methods for such components: one is casting forming, the existence of casting defects makes it difficult for the cast valve body to meet the high performance requirements; the other is welding forming, although it has the advantages of saving materials for the manufacture of su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02B21J13/03B21J1/06B21K1/16
Inventor 孙志超杨合王江辉王煜
Owner NORTHWESTERN POLYTECHNICAL UNIV
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