Plastics Technology

JAN 2018

Plastics Technology - Dedicated to improving Plastics Processing.

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Trend to More Efficient Hydraulic Oils ExxonMobil's Ruiz says there has been an industry-wide trend toward improving the energy efficiency of hydraulic oils. Other evidence of that trend that has appeared in Plastics Technology includes these articles: • "New Hydraulic Fluid Trims Energy Consumption," a case history of custom injection molder Niigon Technologies, which saved 13.6% in energy use with Tellus EE, a new synthetic oil from Shell Lubricants, Houston. (Keeping Up, Nov. '09) • "Oil Additive Helps Hydraulic Presses Save Energy," about a new Dynavis oil additive from Evonik, Parsippany, N.J., that improves the viscosity index of hydraulic oils. It has been licensed to a number of oil suppliers and has been tested in Engel and Boy machines, yielding energy savings of 6% to 10%. (Starting Up, Feb. '17) OUR PASSION YOUR SUCCESS NEGRIBOSSI.COM Degenhardt. Not only does that require downtime to remove and clean or replace dirty valves, but a much more concerning factor is that while varnish is accumulating on the valves, the machine's performance is gradually drifting, affecting quality and cycle time. Degenhardt also credits the substantial advantage of up to three times longer periods between oil and filter changes promised by Mobil DTE 10 Excel. That again saves costs of downtime and disposal of waste oil. Ruiz says typical hydraulic oils used in molding machines contain zinc as an anti-wear additive. But zinc is respon- sible for sludge and varnish accumula- tion as the oil ages in use. Mobil DTE 10 Excel is zinc-free. And there's one other, quite unexpected, benefit from changing to the new oil: "When I entered the lab, I couldn't hear the machine. I had to ask, 'Is this thing running?' It was so quiet." Ruiz explains that Mobil DTE 10 Excel contains air- release additives that prevent micro-cavitation, which accounts for noise in operating hydraulic systems. Three times longer between oil changes and greatly reduced varnish deposits on valves help pay for a premium hydraulic fluid. 28 JANUARY 2018 Plastics Technology PTonline.com H Y D R A U L I C O I L Close -Up On Technolog y

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