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VAC AERO’s Kalisz, Poland Operation Receives EU Grant to Expand Services.
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VAC AERO Kalisz Sp. z o.o. recently received a grant equivalent to approximately $400K CDN from the European Union Sectoral Operational Program for the Improvement of the Competitiveness of Enterprises.
The grant application was based on expanding special process capabilities for the heat treating and coating of shafts for gas turbine engines.
As part of the expansion, VAC AERO Kalisz has installed a new vertical vacuum furnace, activation and coating equipment for coating internal and external surfaces, custom tooling for applying inorganic and plasma coatings, and special testing equipment for inspection of coating quality. READ MORE
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Brazing in a Vacuum "Atmosphere"
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By Dan Kay.
All metals want to react with oxygen as the metals are heated. The higher the temperature, the greater the thermodynamic driving force to have those oxides form. This is true for all metals, even though the oxides of some metals are not as stable as the oxides of other metals. Gold and nickel are examples of metals whose oxides are not stable at any temperature we would encounter in our daily activities, and thus, do not concern us at all. Copper oxides and iron oxides are examples of metals whose oxides are not stable at higher temperatures, in that those oxides are easily and quickly dissociated at elevated temperatures. READ MORE
In June's article, we'll look at how creating "partial-pressures" in vacuum furnaces by back-filling vacuum furnaces with an inert atmosphere is sometimes necessary to achieve successful brazements!
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