Q.11 How to prevent back streaming of diffusion pump oil? Ans. To prevent back streaming of Diffusion Pump oil it must be ensured that- System is “Roughed out” before Diffusion Pump is put in line. Rotary vacuum pump is maintaining a vacuum of at least 10-2 Torr. If process is causing release of a large…
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 Q.21 What is the alternative of CVC4 diffusion pump oil. Ans. Supervac Industries, New Delhi manufactures silicone diffusion pump oil SV-SIGMA. This oil is a perfect alternative of CVC4. Infact, SV-SIGMA has a much larger satisfied customer base and has been in use much before CVC4 started getting promoted.  Q.22 Can somebody supply me…
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Q.1 What is a Roughing Pump? Ans. A Roughing Pump is nothing but an ordinary Rotary vacuum pump which is used to evacuate the vacuum system initially. After a roughing pump creates vacuum of minimum 1×10-2 Torr, the valve systems changes settings and pumps like Booster Pump and Diffusion Pump are connected to system to create higher…
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Q.1 What is the boiling temperature of Vapor Jet Booster Pump Oil? Ans. Boiling temperature of Vapor Jet Booster pump oil is normally between 1600C to 1800C. Q.2 What are types of Vapor Jet Booster Pump Oils? Ans. Vapor…
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A furnace is typically run at temperature between 500 o C- 1200 o C. Because of such elevated temperatures, furnaces require a lot of safety precautions in their normal operations. Because of requirement of better products many times it is essential that heating inside furnace be done under vacuum. Such a furnace is called a vacuum furnace.  Advantages…
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Vacuum Chambers It is but natural that during the process, material being coated on substrate will fall off in the vacuum chamber. For example, Aluminum heated and evaporated to be coated on BOPP film (film metallizing) or on some object (object metallizing) will fall off on vacuum chamber and shields. Being in molten state this…
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Roots Blower Booster Pumps Roots Blower Booster Pump: These pumps work on the principle of positive displacement of gas. The Roots pump consists of two impellers called roots in the shape of figure 8. These impellers are mounted on parallel shafts in a single cylinder having inlet and outlet openings on the sides. The impellers,…
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A lot of confusion exists in the vacuum industry about certain things, for example- What should the optimum temperature be set in diffusion pump heaters so as to get maximum level of vacuum in shortest possible time? How can the temperature in diffusion pumps be set in such a way that the engineers…
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Q1) What is the particle size of SV-BNP+? Answer: The average particle size of SV-BNP+ boron nitride powder is 5 micron. Q2) Is it water soluble? Answer: Yes, SV-BNP+ can readily dissolve in water to form a smooth lubricious paint-like liquid. Quantity of water can be as per the user’s requirement. Thereafter it can…
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Manufacturers produce myriad products in a variety of shapes and sizes using molds. These products as well as molds are made in many materials like plastic, concrete, metals, ceramic, glass etc. Â Molding allows the manufacturer to produce articles in the exact same dimensions and designs in the shortest possible time. While molding an article,…
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