Key technology and equipment for local heating roll-forming of high strength square tube

Research on Key Technology of Cloud Design for Mechanical Equipment

In order to carry out rapid response of design of products, aimed at problems existed in realm cooperation during the design process of mechanical equipment, this paper proposes design mode of mechanical equipment based on cloud environment, implementation method of cloudy domain analysis on design demand and mapping technology, serial expand strategy on discrete design resource and strategy in...

Stress Analysis and Energy Estimation in Cold-Roll Forming Process

In this article, stress analysis and energy estimation during cold-roll forming of symmetrical channel sections have been discussed. Geometry of sheet strip is pre-estimated by a shape function. Then longitudinal, transversal and shear strains have been calculated. Using both the Levy-Mises and the Prandtl Reuss equations, and also considering the Bauschinger effect, stress distributions have b...

Systems and Equipment for Space Heating

High-speed roll-to-roll manufacturing of graphene using a concentric tube CVD reactor

We present the design of a concentric tube (CT) reactor for roll-to-roll chemical vapor deposition (CVD) on flexible substrates, and its application to continuous production of graphene on copper foil. In the CTCVD reactor, the thin foil substrate is helically wrapped around the inner tube, and translates through the gap between the concentric tubes. We use a bench-scale prototype machine to sy...

Cold roll forming process pdf