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Forging forming process of high barrel-shaped aluminum alloy forged piece

A forging forming and aluminum alloy technology, applied in the field of forging technology, can solve problems such as easy deformation of ring parts, local coarse grains, sensitivity to deformation temperature and deformation speed, etc., to prevent machining deformation, increase radial elongation, reduce anisotropic effect

Active Publication Date: 2015-03-25
WUXI PAIKE HEAVY CASTING & FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the forging process of high cylindrical aluminum alloy forgings, due to the narrow deformation temperature range of the aluminum alloy during the heating process, sensitivity to deformation temperature and deformation speed, large friction coefficient and poor fluidity, uneven deformation will cause local coarse grains, and In addition, the height of the high cylindrical aluminum alloy forging is 900mm, so it is easy to produce critical deformation during the forging process, and it may cause instability and elliptical deformation during the ring rolling process. , the ring parts are easily deformed in the heat treatment process, the uneven structure of the finished product after heat treatment and the large anisotropy of properties have greatly increased the production difficulty of aluminum alloy forgings

Method used

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  • Forging forming process of high barrel-shaped aluminum alloy forged piece
  • Forging forming process of high barrel-shaped aluminum alloy forged piece
  • Forging forming process of high barrel-shaped aluminum alloy forged piece

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A kind of forging molding process of tall cylindrical aluminum alloy forging comprises the following steps:

[0035] The first step: blanking: use cast aluminum rod as the blank, the diameter of the blank is 680mm, and the height is 1400mm;

[0036] The second step: heating before forging: the first heating stage: place the billet in the heating furnace, and raise the temperature of the billet to 290°C; the second heating stage: continue to heat the The steel billet was heated to 465°C and held for 22 hours. The temperature curve of heating before forging is as follows: figure 1 shown.

[0037] The third step: billet making: such as figure 2 As shown, the first stage: use the cross upsetting method to upset the heated billet to form a round cake; the specific upsetting method of the cross upsetting method is as follows: first, the billet is upset along the Z axis to form a disc, and the shape of the disc 1000mm in diameter and 650mm in height ( fig...

Embodiment 2

[0047] A kind of forging molding process of tall cylindrical aluminum alloy forging comprises the following steps:

[0048] The first step: blanking: use the cast aluminum rod as the blank, the diameter of the blank is 680mm, the height is 1500mm, and the weight is 1550kg.

[0049] The second step: heating before forging: the first heating stage: place the billet in the heating furnace, and raise the temperature of the billet to 300°C; the second heating stage: continue to heat the The steel billet was heated to 475°C and held for 28 hours. The temperature curve of heating before forging is as follows: figure 1 shown.

[0050] The third step: billet making: such as figure 2 As shown, the first stage: Upsetting the heated billet to form a round cake using the cross-upsetting method; the specific upsetting method of the cross-upsetting method is as follows: first, the billet is upset along the Z-axis to form a disc, and the diameter of the disc is is 1030mm a...

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Abstract

The invention relates to a forging forming process of a high barrel-shaped aluminum alloy forged piece. A cross upsetting and rolling method is adopted in a forging process, so that on one hand, an aluminum alloy blank can be fully deformed, and a casting-state structure is enabled to be changed into a forged structure, on the other hand, by use of the cross upsetting and rolling method, the anisotropy of an aluminum alloy ring piece can be reduced and the radial elongation of the aluminum alloy ring piece can be improved. The feeding rate of a ring rolling machine during ring rolling is changed in a forging process, so that the aluminum alloy forged piece is prevented from being overheated on one hand, and the end surface of the aluminum alloy forged piece can be prevented from peeling and sinking; and besides, the aluminum alloy forged piece is subjected to heat treatment, so that the intensity of the forged piece can be improved, hardening constituents precipitated out from the aluminum alloy forged piece at the heat treatment temperature can be finely dispersed and distributed, the participating stress of the aluminum alloy forged piece can be reduced and the follow-up machining deformation can be prevented.

Description

technical field [0001] The invention relates to a forging process, in particular to a forging forming process of a tall cylindrical aluminum alloy (2A14) forging. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. At present, in the forging process of high cylindrical aluminum alloy forgings, due to the narrow deformation temperature range of the aluminum alloy during the heating process, sensitivity to deformation temperature and deformation speed, large friction coefficient and poor fluidity, uneven deformation will cause local coarse grains, and In addition, the height of the high cylindrical aluminum alloy forging is 900mm, so it is easy to produce critical deformation during the forging process, and it may cause instability and elliptical deformation during the ring rolling pro...

Claims

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Application Information

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IPC IPC(8): B21C37/00B21H1/06B21J5/08
CPCB21H1/06B21J1/06B21J5/08B21J5/10B23P15/00
Inventor 许亮李湘军王骏刘智刘其源陈翠
Owner WUXI PAIKE HEAVY CASTING & FORGING
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