Results 241 to 250 of about 668,877 (302)

Cold-drawing sheet molybdenum at room temperature

, 1975
openaire   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

Polymer fibrillization during cold drawing

Polymer Science U.S.S.R., 1977
Abstract A model for the cold drawing of a polymer is described as a non-uniform deformation which takes place in the presence of concentrations of stresses. An excess of free volume is assumed in the stress concentrator and also a local orientation of the macromolecular chains.
A.L. Volynskii, G.M. Lukovkin, N.F. Bakeyev   +2 more
openaire   +1 more source

Mathematical Optimization of Cold Wire Drawing Operations

Advances in Science and Technology, 2023
An analytical model of the cold wire drawing process is used to implement an optimization procedure. The optimization aims to minimize the number of passes required to achieve a given reduction while maintaining a safe value of the drawing stress in each step.
Francisco Javier Doblas-Charneco, Domingo Morales-Palma, Aida Estevez, Carpoforo Vallellano   +3 more
openaire   +1 more source

Stability and Cold Drawing of Viscoelastic Bars

Journal of Rheology, 1981
A theory of stability for deformation of BKZ viscoelastic bars is developed. This theory is an extension of the one given by Ericksen for elastic bars. For appropriate strain potentials under certain loads in uniaxial creep and constant rate of extension, the bar will deform homogeneously for some time, and then become unstable and neck.
Bernstein, Barry, Zapas, Louis J.
openaire   +2 more sources

New cold‐rolled deep‐drawing grades

Steel Research, 1999
An unstabilised ultra low carbon steel (12 ppm of C) offers an attractive combination of formability properties like yield strength, elongation, mean r‐value and BH‐index. The major drawback is its large planar anisotropy. This is attributed to the large grain‐size of the hot‐rolled product.
Jean‐Claude Herman, Christophe Van Durme, Joeri Neutjens   +2 more
openaire   +1 more source

Studies in Cold-Drawing: Part 1—Effect of Cold-Drawing on Steel

Journal of Fluids Engineering, 1955
Abstract In the study of cold-drawing SAE 1020 steel rod various amounts up to a true reduction in area of 0.76, several properties were obtained such as hardness, torsion, and tension. Residual stresses were measured and the microstructure was examined. The effect of the amount of reduction and the direction of drawing per pass (defined
openaire   +1 more source

The cold drawing of polyethylene terephthalate

British Journal of Applied Physics, 1967
The cold-drawing behaviour of polyethylene terephthalate has been studied over a wide range of test conditions and polymer constitution. In addition to measurements at different temperatures and strain rates, the influence of pre-orientation, crystallinity and chemical cross-linking was investigated.
S W Allison, I M Ward
openaire   +1 more source

Production of duplex tubes by cold drawing

Metals Technology, 1978
AbstractAn analytical solution based on the upper-bound technique is derivedfor coldplug drawmg of duplex tubes. A kinematically admissible axisymmetric velocity field is proposed which takes into account the strength and volume ratio of the component materials, redundant work, friction, and strain hardening. This analysis is considered to be the first
M. N. Islam, A. N. Bramley
openaire   +1 more source

Structural deformation in polyethylene during cold-drawing

Journal of Materials Science, 1982
A permanganic etching technique is used to study the morphology of blow-moulded polyethylene before and after cold-drawing. The morphological changes that occur in the necked region during drawing are also examined. The etching technique reveals an initial unoriented spherulitic structure, only 35% of which is changed on drawing to a fibrillar texture ...
P. E. Reed, G. Q. Zhao
openaire   +1 more source