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Numerical Analysis of Cold Drawing of Tubes
1988Up to now, empirical design of tubes multi-pass drawing schemes remains frequent. So, to improve the design, a new three steps strategy is developed: step one testing and grading the involved schemes set with kinematic and static element approaches; step two testing the selected scheme with analogical experiments; step three testing again the selected ...
J. M. Rigaut +4 more
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Journal of the Textile Institute Proceedings, 1958
An investigation has been made into the variation in shape of the loadelongation curve of undrawn polyhexamethylene adipamide (nylon 6.6) filaments with change in ambient conditions, isotropic refractive index of the undrawn filament and speed of extension at low speeds of extension (0.008cm/sec–0.43cm/sec). The interaction of these variables and their
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An investigation has been made into the variation in shape of the loadelongation curve of undrawn polyhexamethylene adipamide (nylon 6.6) filaments with change in ambient conditions, isotropic refractive index of the undrawn filament and speed of extension at low speeds of extension (0.008cm/sec–0.43cm/sec). The interaction of these variables and their
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Cold drawing experiments with polyethylene gel fibres
Acta Polymerica, 1992AbstractHigh strength/high modulus fibres can be prepared by cold drawing of UHMW‐PE gel fibres. It is shown that the crystalline order in this fibres is not perfect. The supermolecular structure is characterized by a shish‐kebab morphology. Results of X‐ray and mechanical investigations permit to explain the drawing process by a three‐step mechanism ...
A. Bauer, D. Hofmann, E. Schulz
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Cold drawing of polymers: Plasticity and aging
Journal of Non-Crystalline Solids, 2006Abstract Physical aging and mechanical deformation on polyisobutylmethacrylate (PIBMA) and polymethylmethacrylate (PMMA) have been investigated below but close to the glass transition temperature using calorimetry and elastic neutron scattering. We have studied the effect of physical aging before, during and after the deformation on the mechanical ...
F. Casas +3 more
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Thermal Mechanism of Cold-Drawing of Polymers
1970The phenomenon of cold-drawing (formation and steady propagation of an abrupt contraction — “necking” — in stretching cylindrical samples) is one of the qualitative peculiarities of polymers and plays an important role in the production processes of strong fibres [1–4].
G. I. Barenblatt +2 more
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Chemical preparation of tubes before cold drawing
2021Prior to the technological process of cold drawing of tubes through dies, a very important part is preparation for drawing and pre-treatment of tubes. In the production of cold drawn tubes, pre-treatment involves the chemical removing of impurities and oxides, and subsequently applying the lubricant on to the surface of the tubes.
Rešković, Stoja +4 more
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Cold Rolling. Deep Drawing. Wire Drawing. Coatings
2021Luis Felipe Verdeja González +2 more
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Modeling and Analysis of Cold Drawing Process
2017Products of cold drawing process are extensively used due to their characteristics such as very good surface finish, close dimensional control and superior mechanical properties. Therefore, this process has drawn attention of several researchers over the years.
Praveen Kumar Loharkar +1 more
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On the “Cold Drawing” of Semicrystalline Polymers
Journal of Macromolecular Science, Part B, 2005On the basis of the literature and the author's data, the specific features of stress‐strain curves during uniaxial stretching of semicrystalline polymers were analyzed. It was shown that the general external appearance of a deformed sample (presence or lack of neck) and character of stress‐strain curves depend not only on strain temperature, T2, but ...
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