Twin-roll forming, a novel method for producing high-consistency microfibrillated cellulosic films

Fibre flocculation during twin- wire roll forming

At the division of Paper Technology a forming unit consisting of headbox, forming roll unit and reservoir system for suspension recirculation has been constructed, with the main purpose to experimentally study the paper forming event by visually following the fibre flow phenomena in the forming zone. The effect of various running parameters upon the pressure distribution, which is in correlatio...

A novel method for laser forming of two-step bending of a dome shaped part

In recent decades, one of the challenges in sheet metal forming was production of two-step bending surfaces without mechanical tools and external force or by a combination of heat source and mechanical tools. Forming with a heat source such as laser beam has the potential for forming arbitrary 3D shapes such as two-step bending surfaces. In this paper a novel method for laser forming of complic...

presenting a new method for high speed incremental forming

recently, incremental sheet metal forming (ismf) process as one of the new methods in rapid prototyping collection has been considered by researchers. this process is based on a defined path in cnc controller and applies a spherical-head tool that supplies the required pressure for sheet metal forming. despite affirmation of process ability in forming symmetric geometries, some of its aspects s...

A Hybrid Method to Deformation Force of High-speed Cold Roll-beating Forming

ABSTRCT: High-speed cold roll-beating forming technique is a new near-net plastic forming method that the intermittent high-speed roll-beating is used to achieve dynamic impact local loading, and that is fast, transient, high impact, large deformation of the complex forming process. For this forming process, the main stress method is employed to derive an analytic formula for the deformation fo...

Cold roll forming process pdf