Radial forging is an open die forging process used for reducing the diameters of shafts, tubes, stepped shafts and axles and also for creating internal profiles such as rifling the gun barrels. The radial forging of tube is usually performed over a mandrel to create an internal profile and/or size the internal diameter. Most of the previous studies conducted on the radial forging process have u...

The mandrel reaming forging is of great significance to the billeting ring ingot. Through analysis deformation steel ingot mandrel, it concluded that exists in radial, axial and tangential directions, which are similar rigid zone, active plastic zone passive upsetting theory. Numerical simulation methods used analyze verified has a an directions. At same time, reduction rate found greater impac...

Manufacturing of hollow components with local functional internal surfaces often requires complex process routes several individual operations. By using a special cold forging an adjustable deformation zone it is possible to manufacture shafts varying wall thickness over its axial length parts just within single stroke the press. Combining this principle splined mandrel allows manufacturing tai...

In gear measuring machines (GMMs), the tested gear is mounted on a mandrel, which is pivoted at both ends by two centers in a vertical arrangement. The upper center is fixed and the lower center is driven by the spindle of rotation. The coaxiality error between the central line of the mandrel and the spindle average line of a GMM always exists in terms of the offset and angle measured in one pl...

Near net shape processing by plasma spray forming (PSF) is a rapid prototyping technique that involves deposition of ceramic coating on the mandrel and its removal as a free-standing structure. This process requires a precise control of the temperature attained by the mandrel during spraying. This article describes the improvement in the accuracy of the temperature prediction of the mandrel by ...

Braiding is a manufacturing process that is increasingly being used to manufacture pre-forms for Resin Transfer Moulding. A fast simulation method is presented for the prediction of the fibre distribution on complex braided parts and complex kinetic situations (e.g. changes in velocity, orientation). The implementation is suited for triangular surface representations as generated by many CAD so...

one of the most prominent industries is bending, while using rotary draw bending method is known to be the most conventional approach for thin wall tube bending. pressure die is one effective tool which boosts the tube during the process and eventually improves the bending quality. other effective parameters are mandrel and the amount of clearance between tube and mandrel. in the present study,...

The aim of the work was to determine quality of an implant mounting within a bone and its strength, as well as to find out, which factors, occurring in the implant-bone system, influence the condition of the contact of an implant mounted within a living tissue the most. The quality of an implant mounting within a bone was experimentally determined by testing 18 samples that had been prepared be...

This paper investigates the influence of material properties on the performance of an optical fiber wound mandrel composite fiber optic interferometer mandrel by using the ANSYS Cad tool, The acoustic sensitivity of an optical fiber considered analytically, High sensitivity obtained with low young modulus, very thick polymer coatings. The thick coating realized by embedding optical fiber in pol...