Results 221 to 230 of about 88,830 (272)
Some of the next articles are maybe not open access.
Nanostructured MgH2 prepared by cold rolling and cold forging
Journal of Alloys and Compounds, 2011Magnesium is a promising material for solid state hydrogen storage, since it has low cost and its hydride can store reversibly up to 7.6 wt.% of hydrogen. Fast H-sorption kinetics at around 300 ◦ C can be achieved after processing Mg-based mixtures by high energy ball milling (HEBM), which produces nanostructured composite powders.
D.R. Leiva +7 more
openaire +1 more source
Workability of Cold Forged Powder Steel
Materials Science Forum, 1998Powder forging involves axial compression of powder preforms to develop full density and to achieve the desired part shape. The process is generally carried out in a trap die consisting of a through-hole die cavity, a movable upper punch for load application and a lower punch for ejection of the part.
P.R.P. Pedroso, L. Schaeffer, S.C. Alano
openaire +1 more source
Wear Criteria of Cold Forging Tools
Surface Engineering, 2001In the cold forging industry, the tooling makes an important contribution to the cost price of the forged pieces. Predicting the degradation of the tools would constitute a significant advantage. A possible definition of tool life is when the roughness parameters of the formed pieces exceed fixed criteria, at which point the tool must be replaced or ...
M. Dubar +4 more
openaire +1 more source
Residual stresses in cold axisymmetric forging
Journal of Materials Processing Technology, 2003Abstract In the present work, residual stresses in axisymmetric cold forging process are analysed. The updated Lagrangian formulation, which is convenient for handling the geometric and material non-linearities, is used. A new incremental objective stress measure [Dynamic large deformation elasto-plastic analysis of continua, M.Tech.
M.P. Mungi, S.D. Rasane, P.M. Dixit
openaire +1 more source
Cold forging behavior of semicrystalline polymers
Journal of Applied Polymer Science, 2005AbstractCompared with molding processes, polymer solid‐phase forming has several advantages. Particularly, polymer forging is able to reduce cycle time for thick parts, process difficult‐to‐mold materials, and enhance mechanical performance through self‐reinforcment. Although much research has been carried out in the past on solid‐phase forming, little
Pratapkumar Nagarajan, Donggang Yao
openaire +1 more source
Cold Resistance of Structural Steel Subjected to Cold Radial Forging
Metal Science and Heat Treatment, 2020The structure, the strength characteristics and the impact toughness at different temperatures up to –100°C of tubular billets from steel 35 are studied after a thermal deformation treatment involving initial heat hardening, cold plastic deformation by radial forging and subsequent annealing.
M. Yu. Simonov +3 more
openaire +1 more source
On-line annealing in cold forging
Journal of Materials Processing Technology, 1996Abstract The required parameters for recrystallization annealing by induction heating after a cold extrusion process of the tested steels QSt 34-3 (AISI 1008), Ck 15 (1015) and Ck 45 (1040) were determined to carry out a consecutive cold extrusion process producing crack-free components.
H.-W. Wagener, J. Haats
openaire +1 more source
Cold forging method for polymer microfabrication
Polymer Engineering & Science, 2004Abstract A polymer micro cold forging process was investigated. This method, derived from polymer solid‐phase forming, resembles more the metal‐forging method than the standard thermoplastic molding protocol. A micro‐forging die set was designed and fabricated and a series of cold forging experiments were carried out with varied ...
Donggang Yao, Pratapkumar Nagarajan
openaire +1 more source
Cold orbital forging of gear rack
International Journal of Mechanical Sciences, 2016Abstract At present, gear rack is manufactured mainly by cutting method while its precision plastic forming method has not been reported. This paper proposes an innovative cold orbital forging method for manufacturing gear rack, in which the complicated teeth of gear rack are forged by the highly dynamic rocking tool under straight line path. Firstly,
Xinghui Han, Yaxiong Hu, Lin Hua
openaire +1 more source
Sheet Metal Forming and Cold Forging
19696.1 This chapter is concerned with the factory forming processes which produce components that are subsequently assembled into finished products. It is distinct from Chapters 4 and 5, which dealt with primary forming operations for the manufacture of bars, sheets, tubes and forgings—the raw material for factory machining and forming.
J. D. Radford, D. B. Richardson
openaire +1 more source