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2022 | Book

Precision Forging Technology and Equipment for Aluminum Alloy

Authors: Assoc. Prof. Lei Deng, Prof. Juchen Xia, Prof. Xinyun Wang

Publisher: Springer Nature Singapore

Book Series : Springer Series in Advanced Manufacturing


About this book

This book takes the advanced precision forging technology of aluminum alloy parts as the main line, presents the content of precision forging process analysis, process parameter design, mold structure design, numerical simulation of forming process, and process test, combined with a large number of application examples classified according to the structural characteristics of parts. It introduces the theoretical basis of several new technologies and new equipment for precision forging, including the small flash precision forging technology, flow control forming technology, casting and forging combined forming technology, and new CNC precision forging hydraulic presses and servo hydraulic presses, which inspire readers to innovate on new technology and new equipment development.This book provides readers with the latest knowledge of aluminum alloy precision forging, which is of great reference value in the context of the current increasing attention to lightweight and the increasing application of aluminum alloy parts in automotive, aerospace, marine, and other fields. This book can be used as a reference book for engineering and technical personnel engaged in aluminum alloy forging technology and can also be used as a reference book for researchers, undergraduates, and graduate students interested in materials processing.

Table of Contents

Chapter 1. Introduction
With the continuous increased requirements in automobile lightweight and environmental protection, the application fields of aluminum alloy forgings has become wider and wider.
Lei Deng, Juchen Xia, Xinyun Wang
Chapter 2. Fundamental of Precision Forging Technology for Aluminum Alloy
The concept of aluminum alloy precision forging technology is the same as that of ferrous metal precision forging technology that is the shape and dimensional accuracy of the forged parts are as close as possible to, or even the same as, the shape and dimensional accuracy of used parts. The mechanical properties of the forged parts also meet the requirements.
Lei Deng, Juchen Xia, Xinyun Wang
Chapter 3. Finite Element Simulation of Precision Forging
Physical experiment method and theoretical analysis method are traditional methods to study the law of metal plastic deformation, but there are obvious problems. The physical experiment method mainly refers to the trial and error method which is reliable, but the cost is too high and the cycle is long. The theoretical analysis method is only suitable for the forming analysis of parts with simple shape, and requires many assumptions, resulting in low accuracy and limited application. Under the situation of faster and faster production pace, and more complex shapes of parts, traditional research methods can no longer meet the requirements.
Lei Deng, Juchen Xia, Xinyun Wang
Chapter 4. Precision Forging Technology for Long Shaft Parts
Long shaft forgings account for a large proportion of aluminum alloy forgings, among which aluminum alloy control arms for automobiles are the most typical. It can be further divided into straight or curved forgings, such as the planar control arm, multi-directional control arm, branch-shaped control arm, multi-directional curved control arm, etc., and complex forgings, such as the wingspan control arm and herringbone control arm, as shown in Fig. 4.1.
Lei Deng, Juchen Xia, Xinyun Wang
Chapter 5. Precision Forging Technology for Complex Revolving Parts
The structural characteristics of the revolving aluminum alloy forgings are based on a simple axisymmetric revolving body, and some have bosses or pits at the top or bottom or both ends; some have branch or pits on the side; some are multilayer thin-walled cylindrical structures with different wall thicknesses and heights.
Lei Deng, Juchen Xia, Xinyun Wang
Chapter 6. Combined Casting-Forging Process for Branch-Shaped Parts
Typical branch-shaped forgings such as aluminum alloy steering knuckles and control arms have complex structures. If the traditional die forging processes are employed to produce the forgings from the wrought aluminum alloy bar, although high strength and good quality of the forgings can be obtained, there will be problems such as multi-step billet-making and multiple heating, which will not only cause long production cycle and low efficiency, but also lead to low material utilization and high energy consumption. If the casting processes are employed to form the part, although it has the advantages of good fluidity and easy forming, there will be defects such as shrinkage cavities, porosities and coarse grains in the casting, causing the mechanical properties to fail to meet the requirements of use [1].
In recent years, the casting process and the forging process are combined to form a part to solve the above technical problems, that is, combined casting-forging process. Researchers have carried out the following two aspects of research on the combined casting-forging process: (1) the squeeze casting is used to obtain the pre-formed part, and then the semi-closed or closed precision forging is used for final forming; (2) the cast bar or cast block is taken as the billet of closed precision forging. The key to this process lies in the forging process which eliminates the shrinkage cavities and porosities that generate during the casting process and improves the mechanical properties of the part.
Lei Deng, Juchen Xia, Xinyun Wang
Chapter 7. Precision Forging Presses for Aluminum Alloy
Lei Deng, Juchen Xia, Xinyun Wang
Precision Forging Technology and Equipment for Aluminum Alloy
Assoc. Prof. Lei Deng
Prof. Juchen Xia
Prof. Xinyun Wang
Copyright Year
Springer Nature Singapore
Electronic ISBN
Print ISBN

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