The goal of this study was to evaluate the effect of using die spacers on the marginal fit of NiCr (M1) and NiCrBe (M2) alloys and commercially pure titanium (cpTi) (M3) copings cast by the lost wax technique. Using a metal matrix, 45 resin added extra hard type IV stone models were obtained for the fabrication of wax patterns under the following conditions: no die spacer (A), with one die spac...

Strategies to improve quality of gravity die casting for Sn-Pb alloy are outlined here by modifying the mould's gating system, i.e. mainly down sprue and well. Analysis based on experimental work 27 products delivers a promising result industrial application. Quantitative analysis porosity defect in this was density analysis. The investigation effect design defects worked out through variation ...

A study was conducted to measure the variation in propellant properties for three consecutive batches of an identical formulation. A secondary study was performed to assess the effect of casting vacuum on propellant density, hardness, mechanical properties and burn rate. Only small differences in properties between batches were evident and most were assessed as being within the uncertainty of t...

Study Design: A prospective, observational case series of eighteen children with early onset scoliosis undergo spine manipulation and casting. Objective: Determine if respiratory system compliance decreases during casting warrants tracheal intubation in all Derotational casting procedures. Background: Children with early onset scoliosis with a Cobb angle greater than 25 degrees will have signif...

This case study aims toward the importance of application rapid prototyping and tooling technology in die design manufacturing. Many conventional machining processes manufacturing, including computer numeric control (CNC) electric discharge (EDM), are used by local manufacturers die, but these time-consuming expensive. There is a need to explore opportunities reduce manufacturing costs. paper a...

This article provides an overview of high-pressure die casting (HPDC)-related research undertaken at the EPSRC Future LiME Hub between 2015–2022. The project aimed to identify cause variability in tensile ductility die-cast structures, and develop novel processing techniques address this issue. Variability was related size large pores non-metallic inclusions. It proposed that these inclusions f...

Rods of Ni-43.5wt% Ti alloy were prepared under various casting conditions. Specimens which were melted in a cordierite crucible and cast in a phosphate-bonded investment mold had less strength and elongation than those melted in a copper crucible and cast in a phosphate-bonded investment mold. All castings exhibited superelasticity at room temperature. The upper limit of recoverable strain was...

Within video stateless receivers, a central server should deliver information securely to the authorized users, over a public channel, even if receivers do not update their state from session to session. This is the case of a multimedia conditional access systems based on one way broadcasting. This paper suggests a new approach to assure a secure communication in such environments. The proposed...

The article presents the applicability of 3D printing in casting. Even complex models produced by can be effectively applied field lost pattern process was realized using Polycast and Pioneer investment powder (gypsum). Based on measurement it is clear that size differences come from technology. minimum wall thickness cannot less than 0.8 mm, but there inaccuracy under 2.1 mm when no infill sec...