Results 201 to 210 of about 12,584,658 (247)
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Cracking during cold forming process of rear brake component
Engineering Failure Analysis, 2008Abstract 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
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Online Activities Development to Improve the Understanding of the Processes for Sheet Cold Forming
Materials Science Forum, 2013When 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 +3 more
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A mesoscopic approach of ductile damage during cold forming processes
1997Publisher 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 +4 more
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Spring-back analysis in the cold-forming process of ship hull plates
The International Journal of Advanced Manufacturing Technology, 2018Hull structures and offshore structures are composed of curved thick plates. Line heating method has traditionally been used to produce such curved plates. However, it is recognized that the hot-forming process causes a variety of issues on doubly or multiple curved plates.
Wei Shen +3 more
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A New Testing Method for the Determination of Ductile Fracture in Cold Forming Processes
CIRP Annals, 1983The 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 +3 more
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Analysis of the cold forming process of suspension springs
2011Nowadays 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
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The Development of a Cold Forming Process on an Automatic High-Speed Forming Machine
1975The 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
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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 ...
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Knowledge Base Controller for Cold Forming Mills in Iron and Steel Production Process
IFAC Proceedings Volumes, 1992Abstract 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
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Cold Forming Aluminium Alloys — Development of a Control System for a Phosphate Lubrication Process
CIRP Annals, 1982Summary 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
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