Vacuum Heat Treatment & Brazing

VAC AERO offers a wide variety of heat treating and brazing services to the aerospace, military and other high technology industries. We also specialize in heat treating and brazing of superalloys, titanium and other advanced materials.

Special processes include the following:

• High temperature vacuum brazing of numerous materials including stainless steel, copper alloys, titanium and ceramics (Kalisz);
• Tempering (Kalisz and Tajecina);
• Stress relieving (Kalisz and Tajecina);
• Other processes according to customer requirements (Kalisz and Tajecina).

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Vacuum Carburizing

In response to growing customer demand, VAC AERO has recently commissioned a bottom loading vacuum furnace in its new Tajecina plant capable of offering specialized heat treatment services including vacuum carburizing. The new furnace is designed to provide optimal carburizing conditions by which a uniform carburized layer can be obtained on the details of complex shapes, as well as in deep holes. This process increases the strength of the material and extends the life of carburized components. This type of carburizing maximizes production flexibility, shortens process time and lowers power consumption. It is much more efficient when compared to traditional processes performed in gas carburizing furnaces.

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Plasma Spray Coatings

Effective coating solutions require an on-going commitment to research & development and state-of-the-art equipment. This approach has been a key element in the growth of VAC AERO’s coating operations provided to the aerospace and commercial sectors. Complex problems of oxidation and corrosion protection for components that are exposed to harsh service environments require solutions that use the correct combination of coating material and application technique. VAC AERO`s offer a wide variety of coating processes and applications for protecion and restoration of new and service-exposed components both small and large. Thermal spray coatings are applied using robotically-controlled manipulators for maximum coating integrity. VAC AERO Kalisz offers:

• Air-plasma spray coatings (APS)
• Pack aluminide coatings (PAC)

COATING APPLICATIONS:

• Dimensional Restoration and Pure metals and alloys,
• Wear Resistance Tungsten carbides for electrolytic hard chrome replacement and for higher temperature environments,
• High Temperature Protection, and Diffused Aluminide for oxidation and hot corrosion protection,
• Clearance Control Low temperature abradables: Ni/Graphite, Al/Polyester,
• High temperature abradables.

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High Velocity Oxygen Fuel (HVOF)

VAC AERO continually introduces new innovations in coating development. In 2010 Company installed a fully integrated state-of-the Art High Velocity Oxygen Fuel (HVOF) system based on a new generation Carbide Jet System. New types of coating processes for protection and restoration of both new and service-exposed components are offered primarily to customers in the aerospace and power turbines industries.

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Organic and Inorganic Paint Coatings

VAC AERO KALISZ offers high-temperature, corrosionand oxidation resistant coatings for ferrous alloys.Various types of coatings include organic and inorganic, basic and multilayered, hardened and sealed, depending on customer's expectations.

Paint composition combines thermal stability and hardness along with good flexibility, superior adhesion and exellent corrosion and oxidation protection at high temperatures.

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Metallographic Lab Tests

VAC AERO KALISZ maintains a fully-equipped metallographic laboratories approved by major aerospace prime manufacturers including Pratt & Whitney Canada and Sikorsky Aircraft Corporation.

SELECTED EQUIPMENT:

• Automatic Microhardness Tester VICKERS
• Automatic Microhardness Tester KNOOP
• Hardness Tester ROCKWELL HRA/ HRB/ HRC
• Hardness Tester SUPER ROCKWELL HR 15Y/ HR 15T/ HR 15N
• Camera integrated metallographic microscope

MAIN TESTS OFFERED:

• Microstructure
• Evaluation of hardened case depth (carburized, nitrided and induction hardened)
• Plasma spray coatings
• Paint coatings
• Coating and plating thickness
• Evaluation after EDMR, LBMR, welding, EBW, brazing

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