Forging method for improving qualified rate of large-wall-thickness 5754 aluminum alloy forged piece

A technology of aluminum alloy and pass rate, which is applied in the field of aluminum alloy forging, can solve problems such as intergranular dislocation, uneven force, and affecting the pass rate of one-time inspection of products

Active Publication Date: 2021-05-18
WUXI PAIKE HEAVY CASTING & FORGING
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When producing large-scale 5754 aluminum alloy rings with a feeding weight of more than 1800kg for forgings (wall thickness B≥400, height ≤300), the ratio of the wall thickness to the height of the workpiece before ring rolling is ≥1.5, and there are more holes after reaming and ring rolling. Problems that affect the passing rate of the product for one-time inspection
[0003] At present, in the process of expanding the blank with a wal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Forging method for improving qualified rate of large-wall-thickness 5754 aluminum alloy forged piece
  • Forging method for improving qualified rate of large-wall-thickness 5754 aluminum alloy forged piece
  • Forging method for improving qualified rate of large-wall-thickness 5754 aluminum alloy forged piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Embodiment: a kind of forging method that improves the qualified rate of large wall thickness 5754 aluminum alloy forgings, such as figure 1 shown, including the following steps:

[0026] S1. Billet blanking: the size of the raw material is φ770-800mm cast rod, and the length is L. Control the content of Mg and Mn+Cr in the raw material, that is, the forging. The content of Mg is controlled at 2.6%-3.6%. Mg exists in the form of β(Mg2Al3) phase in the aluminum alloy, which serves the purpose of dispersion strengthening. Increasing the content of Mg can increase the strength of the alloy, but it will reduce the plasticity to a certain extent. Appropriately increasing the content of Mn+Cr and internally controlling it at 0.30-0.60% can hinder the grain growth, make the ingot structure compact, and ensure the performance of the forging matrix, welding heat crack resistance and corrosion resistance.

[0027] S2. Billet forging heating: the billet is put into the furnace ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a forging method for improving the qualified rate of a large-wall-thickness 5754 aluminum alloy forged piece, and belongs to the technical field of aluminum alloy forging. According to the technical scheme, the forging method is characterized by comprising the following steps that S1, a blank is blanked; S2, forging and heating are conducted on the blank; S3, the heated blank is forged to obtain a ring blank; S4, annealing is conducted; S5, machining is conducted; and S6, inspection is conducted. The method has the advantages that the cast ingot applies appropriate plastic deformation, the microstructure is improved, grains are refined, the situation that micro-cracks are formed in the middle of the wall thickness due to non-uniform stress is avoided, and the qualification rate of workpieces is increased.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy forging, in particular to a forging method for improving the qualified rate of 5754 aluminum alloy forgings with large wall thickness. Background technique [0002] 5754 aluminum alloy is a typical 5-series aluminum-magnesium alloy with medium strength, weldability, and good corrosion resistance. Generally, it is mainly made of rolled plates and less extruded profiles. It can be widely used in automobiles, Transportation, aerospace and other fields. When producing large-scale 5754 aluminum alloy rings with a feeding weight of more than 1800kg for forgings (wall thickness B≥400, height ≤300), the ratio of the wall thickness to the height of the workpiece before ring rolling is ≥1.5, and there are more holes after reaming and ring rolling. Problems that affect the passing rate of the product for one-time inspection [0003] At present, in the process of reaming the blank with a wall thickne...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B21J1/06B21J5/08B21J5/00B23P15/00
CPCB21J1/06B21J5/08B21J5/002B23P15/00
Inventor 陆振宇张星星许亮刘宁侯博秋秦寅康
Owner WUXI PAIKE HEAVY CASTING & FORGING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap