Results 71 to 80 of about 613 (113)

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

A New Testing Method for the Determination of Ductile Fracture in Cold Forming Processes

CIRP Annals, 1983
The primary objective of this study is to show that ductile fracture mechanism in cold forming is highly dependent on the state of stress resulting from the process. So, it is convenient to use identification testing procedure and well defined method for determining equivalent strain at fracture.
J.C. Gelin, J. Oudin, Y. Ravalard, A. Moisan   +3 more
openaire   +1 more source

A mesoscopic approach of ductile damage during cold forming processes

1997
Publisher Summary The mesoscopic model avoids restrictive assumptions usually used in analytical models and appears to give a good account of ductile damage phenomena (nucleation, growth, and coalescence) for all kinds of loading conditions. It represents a very efficient tool for validating analytical models, for understanding the mechanisms and the
G. Brethenoux, P. Mazataud, E. Bourgain, M. Muzzi, J. Giusti   +4 more
openaire   +1 more source

Cold Forming Aluminium Alloys — Development of a Control System for a Phosphate Lubrication Process

CIRP Annals, 1982
Summary The zinc phosphate-sodium stearate method of lubrication is used extensively for the cold forming of steel. The control of the chemical composition of the solution used in this process is relatively simple and poses few problems for industry. However, a similar lubrication process which is often used when the higher strength aluminium alloys ...
L.E. Farmer, P.L.B. Oxley
openaire   +1 more source

Analysis of the cold forming process of suspension springs

2011
Nowadays in automotive industry great efforts are spent in achieving weight reduction of cars components. The coil springs are not exempt. For this component weight reduction can be obtained by reducing the spring wire diameter. However, to assure that springs maintain the required mechanical properties, it is necessary to adopt material with high ...
BERTI, GUIDO, MONTI, MANUEL
openaire   +1 more source

The Development of a Cold Forming Process on an Automatic High-Speed Forming Machine

1975
The design and initial development of an automatic high-speed forming machine was presented in an earlier paper1. In the present paper further development of this machine, including the tooling and instrumentation for use in the cold can-extrusion of steel, is described.
T. Scaife, B. Parsons, B. N. Cole
openaire   +1 more source

Development and Deployment of Involute Splines Cold Forming Process for Gear Manufacturing [PDF]

, 2019
A dynamic simulation model for cold forming of involute splines through a rolling process is presented. The model identifies a unique rolling methodology which consists of various phenomenon to illustrate the forming process in detail. Mass produced involute splines on four loose gears in a six speed manual transmission are developed from forgings to ...
openaire   +1 more source

Knowledge Base Controller for Cold Forming Mills in Iron and Steel Production Process

IFAC Proceedings Volumes, 1992
Abstract Cold forming mills in the steel production process comprises of two cascaded DC motor stands and a flying shear to cut steel coils in accurate lengths. The main objective of the control scheme is to maintain the speed difference between the two stands within a specified limit in order to prevent producing inaccurate lengths.
M.M.F. Sakr, A. El-Tobshi, H. Shehata
openaire   +1 more source

Strengthening Mechanisms of 1H18N9T Austenitic Steel Buildups Created with Cold Forming Processes

Advanced Materials Research, 2007
In metal forming processes in the tool-workpiece contact area occur high pressure, surface expansion and elevated temperature. It makes ideal circumstances for braking of the lubricant film that causes a direct contact between metallic surfaces. Such a contact usually leads to buildups creation on the tool surface. These phenomena mainly result product
W. Presz, M. Kaczorowski
openaire   +1 more source

Image Processing in the Characterization of Crack Propagation in Cold-Formed Steel Samples

2017
This paper focuses on a technique developed to monitor and track automatically the crack propagation at two sides of the corner of a coupon to investigate the corner effect on the fracture toughness of the high strength cold-formed steel channel sections.
Daniel Dias-da-Costa, Cao Hung Pham, Gregory J. Hancock   +2 more
openaire   +1 more source