Results 1 to 10 of about 2,210 (158)
Investigation of forming accuracy in mandrel-free hot-spinning
Procedia Engineering, 2017 Abstract A new mandrel-free hot-spinning was developed as a new near-net-shape forming technology. Hot-spinning provides a high flexibility, because of no mandrel. This paper investigated the material properties and dimensional accuracy of mandrel-free hot-spun Ti-6Al-4V alloy conical product with a wall angle of 30°at 900°C.
Yoshihide Imamura +4 more
exaly +5 more sources
Metals, 2023 The special-shaped tank dome of a launch vehicle is a large, thin-walled, curved structure that is difficult to form using the conventional center-restraint spinning method. This study proposes a two-step marginal-restraint mandrel-free spinning method for forming large domes.
Lijun Zhu +4 more
openaire +4 more sources
An investigation of mandrel-free spinning
Procedia Manufacturing, 2019 Abstract Spinning is a sheet metal forming technique conventionally used to form axisymmetric shapes. Recently a flexible mandrel-free spinning process was successfully used to form non-axisymmetric geometries. In this mandrel-free spinning process, numerically controlled rollers are used instead of a mandrel, allowing for savings in the lead-time ...
Kishore Jawale, Evripides G. Loukaides
openaire +3 more sources
Deformation characteristics of Ti-6Al-4V plate in mandrel-free hot spinning
Procedia Manufacturing, 2018 Abstract A mandrel-free hot spinning process was developed as a near-net-shape forming technique for a titanium alloy plate. To investigate the deformation characteristics in a mandrel-free hot spinning, a Ti-6Al-4V alloy conical product was formed from a plate which has small penetration holes.
Yoshihide Imamura +5 more
openaire +3 more sources
The International Journal of Advanced Manufacturing Technology, 2023 Abstract The marginal-restraint mandrel-free spinning method can solve the problem of instability when spin-forming thin-walled head blanks. However, when shear-expansion compound forming is adopted for a large diameter head, the sinking phenomenon that occurs during the expansion spinning stage makes it impossible to accurately form the head ...
Lijun Zhu +4 more
openaire +1 more source
Toolpath generation for asymmetric mandrel-free spinning
Procedia Engineering, 2017 © 2017 The Author(s). Spinning of sheet metal traditionally employs a mandrel to form axisymmetric parts. In this work, forming of highly asymmetric parts through spinning is shown to be possible without the use of dedicated tooling through several physical trials. This technology eliminates the need for a mandrel and hence significantly reduces costs,
Iacopo M. Russo, Evripides G. Loukaides
openaire +1 more source
MachinesTraditional manufacturing methods of wind tunnel nozzles are often cumbersome, time-consuming, and costly. The study of spinning forming technology for wind tunnel nozzles provides a pathway to improve manufacturing efficiency while reducing both cost and production cycle.
Piyao Liu +7 more
openaire +1 more source
Research on the integral forming process of thin walled and thick mouth seamless gas cylinders. [PDF]
Sci Rep, 2023 Wang C +5 more
europepmc +1 more source
Cryo-Electrospinning Generates Highly Porous Fiber Scaffolds Which Improves Trabecular Meshwork Cell Infiltration. [PDF]
J Funct Biomater, 2023 Crouch DJ +4 more
europepmc +1 more source
Injectable Devices for Delivery of Liquid or Solid Protein Formulations. [PDF]
ACS Mater Au, 2023 Bernards DA +7 more
europepmc +1 more source