Grieve Furnace Heat Treats Turbine Components
No. 1039 is designed for inert atmosphere, heavy duty heat treatment.
Grieve’s No. 1039 is a 2,000°F (1,093°C), inert atmosphere, heavy duty furnace used for heat treating turbine components. With workspace dimensions of 36 × 60 × 36, it features 73 kW installed in ICA wire coils supported by vacuum-formed ceramic fiber on all interior surfaces, including the door and beneath the hearth. It also has a roof-mounted, heat-resisting alloy circulating fan powered by a 1-hp motor with V-belt drive, water-cooled bearings and an inert atmosphere shaft seal. The furnace has 9”-thick insulated walls comprised of 5”of 2,300°F ceramic fiber and 4” of 1,900°F block insulation; 8 ½” floor insulation comprised of 4 ½” of 2,300°F firebrick and 4” of 1,900°F block insulation. Other features include ¼” plate exterior reinforced with structural steel; ½” steel face plate at doorway with air-operated vertical lift door. Inert atmosphere construction includes continuously welded outer shell, high-temperature door gasket, sealed heater terminal boxes, inert atmosphere inlet, inert atmosphere outlet, inert atmosphere flow meter and manual gas valve. Controls include a digital programming temperature controller, manual reset excess temperature controller with separate contactors, paperless event recorder and SCR power controller.
Grieve No. 1039 inert atmosphere furnace.
Masking is employed in most any metal finishing operation where only a specifically defined area of the surface of a part must be exposed to a process. Conversely, masking may be employed on a surface where treatment is either not required or must be avoided. This article covers the many aspects of masking for metal finishing, including applications, methods and the various types of masking employed.
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