Name: Vds America Inc.
Address: 9n824 Apache Run, Elgin, IL, 60124-8411, USA
Telephone: (847) 931-9113

VDS SA (Vacuum Die-casting Service) is located near Montreux on the Lake of Geneva. For more than 25 years the firm has manufactured and marketed a complete range of high-speed vacuum shut-off valves and associated control systems with very high performance and excellent reliability, as well as high quality chill vents for lower-cost no-maintenance operation. The ProVac(R) vacuum system is designed on a modular basis and it is used throughout the world.
VDS aims to produce hi-tech vacuum systems with ever improving performance, and towards that end makes extensive use in development of numerical simulation backed up by testing and measurement. Furthermore, it not only profits from its own many years of experience in the practice of vacuum pressure die-casting, but also takes account of the feedback from its customers and other commercial users of this technology.
VDS has the products to satisfy every need in vacuum technology and offers a full range of technical support.
Patents and innovation :
VDS is the holder and inventor of unique advanced technologies such as the VAMP and international patented inventions such as

oActuated high-speed vacuum shut-off valves

oOne-sided ProVac(R) Ultra EASY and Ultra SONIC vacuum valve with unequalled aspiration capacity

oTyphoon valve

oNew system of quick-change bushes in order to reduce the costs of overhauling the valves

Vacuum for Die-Casting

In pressure die-casting, many important advantages are obtained by evacuating the gases that are found in the die and shot-sleeve just before and during injection. Chief among these is a considerable reduction in porosity and hence a general improvement in quality. Evacuating the die is especially important for components that will be welded or heat-treated, or where die filling is particularly difficult.
The evacuation of the gases must take place very rapidly before the shot and continue as long as possible during it. It must cease reliably and absolutely when the shot sleeve plunger reaches a point a few millimetres before it stops. Ideally, it should stop when the liquid metal has already penetrated at high speed the preliminary passages of the vacuum valve; at this instant there remain at most only a few milliseconds in which to close the vacuum exhaust channel, reliably and in such a way that it can resist the high injection pressure.

Vds America Inc.

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