Results 261 to 270 of about 7,346 (296)

A heuristic approach to meet geometric tolerance in High Pressure Die Casting

Simulation Modelling Practice and Theory, 2012
Abstract In High Pressure Die Casting (HPDC), geometrical distortions usually happen during the cooling phase, due to the reduced cooling time and the high thermal gradient inside the product itself. This phenomenon affects most the thin walled products.
CAMPATELLI, GIANNI, SCIPPA, ANTONIO
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Automation in High-Pressure Die Casting

2008
Abstract High-pressure die casting is a fast method for net shape manufacturing of parts from nonferrous alloys. This article reviews the automation technologies for the different stages or steps of the process. The steps include liquid metal pouring, injection, solidification, die open, part extraction, die lubrication, insert loading ...
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Vacuum High-Pressure Die Casting

2008
Abstract Vacuum high-pressure die casting uses a vacuum pump to evacuate the air and gases from the die casting die cavity and metal delivery system before and during the injection of molten metal. This article describes the conventional die casting, vacuum die casting, and high-pressure die casting processes.
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Detection of cast residue on high pressure die casting die surface

2006
This thesis aims to develop a temperature feedback system that could provide the basis for automated detection of anomalies on the die surface (e.g., soldering) or for control systems that could improve product quality. A key factor in the provision of temperature feedback was the application of temperature probes positioned within the casting die ...
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An Evaluation of Quality Parameters for High Pressure Die Castings

International Journal of Metalcasting, 2011
Several techniques for examining casting “quality” as it relates to high pressure diecast alloy A380 have been evaluated in the as-cast condition. The roles of three simple parameters were considered: a) metal velocity at the gate, b) the effect of increased Cu or Zn content, and c) the effect of rotary degassing on a recycled melt.
R. Lumley, N. Deeva, M. Gershenzon
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ATM: A Greener Variant of High Pressure Die Casting

Materials Science Forum, 2009
ATM high pressure die casting technology (ATM) is a variant of the traditional high pressure die casting (HPDC) process and is distinguishable by its characteristic lean runners that increase process yields. Reduced raw material consumption helps ATM leave a smaller footprint on the environment by lowering greenhouse gas (GHG) emissions during primary ...
Dayalan R. Gunasegaram, Michel Givord, Robert G. O'Donnell   +2 more
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Innovative Alloys for High Pressure Die Casting

SAE Technical Paper Series, 2009
<div class="htmlview paragraph">In October 2007, Fonderie 2a in cooperation with RENAULT TRUCKS Crash Calculation Department and Material Test Laboratory in Venissieux started a project aimed to study the mechanical behaviour in crash simulation and dynamic stress for different kinds of HPDC alloys utilised by Fonderie 2a for Renault’s engine and
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The thickness of defect bands in high-pressure die castings

Materials Characterization, 2009
Defect bands following the casting contour are often observed in high-pressure die cast (HPDC) components. In this article, suitable methods for measuring the thickness (w) and grain size in the bands (d) in HPDCs have been developed. The w/d relationship of defect bands has been investigated in HPDC specimens from a range of alloys, casting geometries
Otarawanna, S., Gourlay, C.M., Laukli, H.I., Dahle, A.K.   +3 more
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Rapid tooling of high-pressure die casting moulds

ATZ worldwide, 2001
If car makers are to remain competitive, they must be able to market higher quality products in ever shorter periods at increasingly lower costs. The resulting demands that car manufacturers make of their components can be met best of all by products that are manufactured using high-pressure die casting. It is important, however, that prototypes of the
Eberhard Ambos, Ingolf Behm
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Effect of Temperature on the Properties of High Pressure Die Casting

Materials Science Forum, 2010
Quality of high pressure die castings is influenced by a lot of factors. Among them, the most important ones are the melt-, and die temperatures. This paper shows a data acquisition system, developed for measuring the melt and die temperatures and the results of the temperature measurements obtained under variable conditions.
Jenő Dúl, Richárd Szabó, Attila Simcsák   +2 more
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