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Damping type flow control forming process and die for aluminium-alloy rib-plate forging

A flow control, damping technology, applied in manufacturing tools, metal processing equipment, forging/pressing/hammering machinery, etc., can solve the problems of large friction resistance, large equipment tonnage, large deformation resistance of rib members, etc. Die forging force, long service life, and the effect of reducing pre-forging force

Active Publication Date: 2013-10-23
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large deformation resistance of the rib member and the high friction resistance of aviation materials such as aluminum alloy flowing in the closed cavity, the tonnage of the equipment required for the die forging of the rib member is very large

Method used

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  • Damping type flow control forming process and die for aluminium-alloy rib-plate forging
  • Damping type flow control forming process and die for aluminium-alloy rib-plate forging
  • Damping type flow control forming process and die for aluminium-alloy rib-plate forging

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] A damped flow control forming method for forgings of aluminum alloy ribs, comprising the steps of forming a pre-forging and forming a final forging,

[0037] 1. Pre-forging forming:

[0038] (1) Design the size of the pre-forging

[0039] The web thickness and the cross-sectional area along the length direction of the pre-forging are equal to the web thickness and the corresponding cross-sectional area along the length direction of the final forging, and the height of the ribs is moderately reduced, the width of the ribs is increased, and the ribs and the web are enlarged The transition fillet radius between. Generally, the rib height of the pre-forging is reduced by 20% to 30% compared with the height of the final forging, and the width of the rib and the radius of the transition fillet are calculated and determined according to the principle of equ...

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PUM

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Abstract

The invention provides a damping type flow control forming process for an aluminium-alloy rib-plate forging. The process comprises two forming steps of pre-forging and finish-forging, a forming load is reduced through a decompression chamber during pre-forging, and the damping force is applied to a web portion of the forging during finish-forging, so that the web portion is prevented from plastic deformation, and deformation only occurs in rib portions. The invention also provides a die for implementing the method. A damper is arranged inside a concave die to apply the acting force to the web portion of the forging. According to the process and the die, metal flow is controlled through the damping force, so that metal distribution is adjusted reasonably during forming, and the forming load is reduced.

Description

technical field [0001] The invention belongs to the field of plastic forming, and in particular relates to a damping type flow control forming process of aluminum alloy rib plate forgings and a mold thereof, which are used for the production of aluminum alloy rib plate forgings such as airplanes. Background technique [0002] The stiffened plate structure is widely used in the structural parts of the aerospace field. Its length and width dimensions are relatively large, and its height dimension is relatively small. It has a large horizontal projected area, thin webs and criss-cross ribs. While ensuring the strength of the components, it saves materials and greatly reduces weight. [0003] The structural characteristics of thin web and high ribs put forward high requirements on the metal flow during the forming of forgings. Rib members are generally manufactured by split manufacturing and then riveted or welded; for rib members with higher performance requirements, usually p...

Claims

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Application Information

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IPC IPC(8): B21J5/02B21J13/02
Inventor 邓磊王新云夏巨谌
Owner HUAZHONG UNIV OF SCI & TECH
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