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May 2008
905-827-4171
Demand Remains Strong for VAC AERO Vacuum Furnaces
vafurnace.gif VAC AERO’s Oakville Furnace Manufacturing Division continues to be busy. Contracts have recently been completed for customers in the Philippines, U.K. and the United States.

Final commissioning activities are almost complete for installations in Russia and Korea. New orders have been received from customers in Poland, the United States and Canada. VAC AERO’s newest interactive furnace control systems are becoming increasingly popular, fuelling the demand for VAC AERO furnaces. These systems will soon be offered with an energy optimization capability that will help reduce electrical expenses. VAC AERO’s Furnace Manufacturing Division is also supporting the company’s own internal expansion plans by building equipment for VAC AERO’s heat treating facilities. More on Heat Treating Services.
VAC AERO Commissions Indian Partner's First Vacuum Furnace
vafurnace.gif HIGHTEMP VAC AERO Pvt. Ltd. recently commissioned its first vacuum furnace at the joint venture’s facility in Nelamangala near Bangalore, India.

The furnace was built to the VAC AERO Model VAH 3436 HV-2 design with 2 bar pressure quench and high vacuum capabilities. The unit was assembled entirely in India with support from VAC AERO technicians in Canada. It is currently being used for production heat treating and brazing in commercial applications. Approvals for processing of aerospace parts are underway. The HIGHTEMP VAC AERO joint venture offers vacuum heat treating and brazing services as well as the manufacture of vacuum furnaces for the Asian market. Additional vacuum processing capacity will be added in India as demand for services grows. More on Furnace Manufacturing.
VAC AERO Coatings Facility Adds Grinding Capability
vafurnace.gif VAC AERO’s Boucherville, Quebec facility has long held thermal spray and inorganic paint approvals for a variety of coating applications.

Recently, the facility has become approved for a complementary grinding capability that allows it to act as a one-stop shop for applying and finishing chrome oxide coatings and paint used on turbine shafts and seal runners. The facility has installed two grinders capable of processing parts up to 12” in diameter and 60” long. It also operates four, fully automated thermal spray booths and two large paint booths. These special processes are now all fully approved to Pratt & Whitney Canada’s stringent CPW33-48 specification. Approvals for other coating compositions are underway.

VAC AERO’s skilled engineers have extensive experience in developing the best coating solutions for both new parts and those needing restoration or repair. Contact VAC AERO to discuss your coating requirements. More on Coating Services.
When to Use a Partial Pressure in a Vacuum Furnace
When heat treating or brazing in vacuum, the vapour pressure of the constituents in the materials being processed can be a very important consideration.

The vapour pressure of a material is that pressure exerted at a given temperature when a material is in equilibrium with its own vapour. Vapour pressure is a function of both the material and the temperature. Figure 1 shows approximate vapour pressure curves for a variety of metals and compounds. The area to the left of each curve represents the conditions of temperature and pressure under which the material exists as a solid. The area to the right of each curve represents those conditions under which the material exists as a gas (or vapour).

 
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