Results 261 to 270 of about 380,192 (309)

Dimpling process in cold roll metal forming by finite element modelling and experimental validation

Journal of Manufacturing Processes, 2014
The dimpling process is a novel cold-roll forming process that involves dimpling of a rolled flat strip prior to the roll forming operation. This is a process undertaken to enhance the material properties and subsequent products’ structural performance ...
Changjiang Wang, D J Mynors
exaly   +2 more sources

Controlling the Cold Roll Forming Design Process

CIRP Annals - Manufacturing Technology, 2006
This paper was sponsored by a full member (A N Bramley) of The International Academy for Production Engineering (CIRP). The paper contains an examination of the cold roll forming design process and how the authors (academic and industrial) have ...
D J Mynors, A N Bramley
exaly   +2 more sources

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Energy Evaluation of Cold-Forming Processes

CIRP Annals, 1990
Summary The contribution first discusses the specific energy consumed in cold forming processes. In order to make on objective comparison of the specific energies consumed in forming as opposed to cutting, the paper proposes the introduction of a new parameter called the degree of structure fineness S. Considering this parameter an energy evaluation
K. Kuzman, J. Peklenik
openaire   +1 more source

Simulation of industrial cold forming processes

Communications in Applied Numerical Methods, 1987
AbstractA microcomputer‐based system for the simulation of cold metalforming processes is described. The simulation uses a nonlinear elastic–plastic finite element method developed for use on a 16‐bit microcomputer. The suitability of such a system is demonstrated by reviewing its application to industrial forming processes such as heading and ...
A. A. M. Hussin, P. Hartley, C. E. N. Sturgess, G. W. Rowe   +3 more
openaire   +1 more source

Virtual Process Design for Cold Formed Components

Key Engineering Materials, 2015
Finite element models optimizing cold forged products have to incorporate the complete manufacturing pathway. Virtual process design as a method based on a multistep operation approach can describe interacting phenomena. Thus, inheritance effects like residual stress and damage evolution can be tracked throughout the processing chain.
Sonja Schratter, Jozef Keckes, Gerald Winter, Bruno Buchmayr   +3 more
openaire   +1 more source

Influence of Die Machining Operation on the Friction Condition in the Cold Forming Process

Tribology Transactions, 2021
The texture of a die surface plays an important role in the tribology of metal forming processes.
Gholamreza Hosseinpour, Mahdi Gerdooei, Vali Alimirzaloo   +2 more
openaire   +1 more source

Some comments on cold forming process stability analysis

Journal of Materials Processing Technology, 2003
Abstract The paper deals with accuracy problems in different forming processes. In cold forging, the outcoming part is exactly defined with tolerances and mechanical properties. On the incoming side, where the material is defined, the definition of geometry and mechanical properties fluctuations is not so clear, because they depend also of the chosen
M Nastran, K Kuzman
openaire   +1 more source

Nitridable steels for cold forming processes

Metallurgical Transactions A, 1981
Low carbon titanium steels with nickel and/or manganese and silicon additions were developed to combine formability, nitradability with increased strength. The strength, formability, and nitradability of 16 different compositions were investigated. Neither the depth nor the great hardness of nitrided layers, due to TiN particles < 15A in size, was ...
openaire   +1 more source

Cracking during cold forming process of rear brake component

Engineering Failure Analysis, 2008
Abstract The root cause for cracking of rear brake components occurred during cold forming process was investigated. Optical micrographs showed the abundance of extended inclusions with several rounded ones in the steel. SEM image revealed the fracture surface which contained many extended cavities formed by extended inclusions and dimples all ...
O. Elkoca, H. Cengizler
openaire   +1 more source

Online Activities Development to Improve the Understanding of the Processes for Sheet Cold Forming

Materials Science Forum, 2013
When it comes to teaching of manufacturing processes and more specifically in the related processes to sheet metal forming, communication technologies now allow the development of set of online activities in order to enable the student to understand some of the scientific basis of this process.
R. Álvarez, J. Claver, D. Lobo, Rosario Domingo   +3 more
openaire   +1 more source