The article discusses the technology of casting according to smelted models, in particular, processes manufacturing wax models. We considered methods elements model blocks with use molds and help additive technologies. In this paper we showed features application technologies lost-wax casting. A simulation has been developed evaluate effectiveness using printing produce Based on results modelin...

Traditionally, toolmark test exemplars are produced by applying a tool's working surface to a piece of soft metal such as lead. Soft, pliable metals are primarily used for this purpose because they will replicate the microscopic grooves present on a tool's working surface without damaging the tool. In this paper the authors present an alternative material for the preparation of test toolmarks. ...

wax precipitate is one of the most serious issues the oil industry is currently facing, since it can cause some troubles such as increasing of the pressure losses in pipe which subsequently increases the required power for pumpage. to remove this problem, prediction of wax disappearance temperature (wdt) seems necessary. in this study, the pressure influence on the wax disappearance temperature...

In the last 10 years, there have been a number of studies in modeling of the deposition processes in flowlines. Most of these models: (1) assume empirical or semi-empirical correlations to predict the pressure drop and temperature profile, (2) ignore the radial convection flow in the layer composed of the two-phase wax and oil (that is the gel layer), and (3) use Fick’s law to describe the diff...

Abstract Aim and Objective The main aim of this study was to evaluate the effect three different types pattern materials on vertical marginal accuracy complete cast crown. Material Methods Three groups 20 specimens each were made based materials, that is, blue inlay wax, autopolymerizing acrylic resin, light cure resin. Castings examined using stereo microscope for discrepancy. Results result s...