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A cold pressing method for L-shaped aluminum alloy ring forgings

A technology for ring forgings and aluminum alloys, which is applied in the field of cold pressing of L-shaped aluminum alloy ring forgings, and can solve the problems of reducing material utilization, forging streamline damage, and reducing the corrosion resistance of aluminum alloys, etc.

Active Publication Date: 2018-02-13
WUXI PAIKE HEAVY CASTING & FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the one hand, the above-mentioned cold pressing method reduces the material utilization rate and increases the production cost; Corrosion resistance

Method used

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  • A cold pressing method for L-shaped aluminum alloy ring forgings
  • A cold pressing method for L-shaped aluminum alloy ring forgings
  • A cold pressing method for L-shaped aluminum alloy ring forgings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] A cold pressing method of an L-shaped aluminum alloy ring forging comprises the following steps:

[0034] The first step: blanking: blanking according to the size specification on the aluminum alloy ingot;

[0035] The second step: forging heating: place the billet in the heating furnace to raise the temperature to 460°C and keep it warm for 20h;

[0036] The third step: billet making: forming by upsetting and drawing twice in the axial direction according to the WhF method, rolling into a round cake, and then punching to form a ring forging with a central hole;

[0037] Step 4: Return to the furnace for the first time: put the ring forging obtained in the third step back into the heating furnace again, heat at 440°C, and keep it for 4 hours;

[0038] Step 5: Horse frame reaming: use a circular mandrel to ream the ring forging to a predetermined size, increase the outer circle and inner hole of the ring forging, keep the height of the ring forging unchanged, and the ou...

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Abstract

The invention relates to a cold pressing method for an L-shaped aluminum alloy ring forging. According to the cold pressing method, during ring rolling, the ring forging is directly rolled to be in an L shape; the L-shaped aluminum alloy ring forging is machined to be in the size before cold deformation and is subjected to cold pressing through an L-shaped tool, so that the ring forging is evenly deformed in the height direction; and the rolling reduction can be strictly controlled after solid solution of an aluminum alloy due to the arrangement of an equal-height block. According to the cold pressing method, the material utilization rate is effectively increased, the production cost is saved, the mechanical performance of the material is greatly improved, and the corrosion resistance capability of the aluminum alloy is greatly improved.

Description

technical field [0001] The invention relates to the field of forging processing, in particular to a cold pressing method for an L-shaped aluminum alloy ring forging. Background technique [0002] With the rapid development of my country's aerospace industry, modern defense industry and transportation industry, the lightweight of important stress-bearing parts and structural parts has prompted more and more calls for replacing steel with aluminum, and the use and demand of aluminum alloy forgings are increasing. Gradually increase. The heat treatment state of some brands of aluminum alloy is T_52 state (compression stress relief state. It is suitable for solution heat treatment or cooling after high temperature forming, and the stress is relieved by compression to produce products with a permanent deformation of 1% to 5%). After the solution treatment, it is necessary to perform cold pressing and then aging heat treatment to eliminate the solid solution residual stress of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D53/16B21H1/06C22F1/04
CPCB21D53/16B21H1/06C22F1/04
Inventor 刘其源刘智何方有李姚君丁佐军郑卓郜均虎
Owner WUXI PAIKE HEAVY CASTING & FORGING