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Lucifer Furnaces Inc. has delivered a large tempering batch oven to a leading East Coast manufacturer of precision grinding equipment. Key features of this Series 4099 unit include a vertical air flow pattern and wire-on-rod heating elements. A roof-mounted stainless steel belt driven fan with a heavy duty motor provides vertical airflow for uniform heat. Coil wound heating elements mounted on ceramic rods on all side walls provide rapid, energy efficient heat and are easy to replace.
A stainless steel liner serves to baffle the fan and elements so that air is circulated past the heating elements then upwards through the chamber. The 18 cu ft chamber is complete with cast alloy roller rails to accommodate a large, heavy load. The furnace is lined with 6 ½ inches of multilayered lightweight insulating firebrick and mineral wool block for maximum heat storage and minimum heat loss.
The furnace has a horizontal swing door with an adjustable latch to insure a firm brick-to-brick seal. Digital temperature controllers are mounted on a side panel. Powered with 42 KW, this heat treating tempering batch oven reaches 1400°F.
Related Glossary Terms
- grinding
grinding
Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.
- tempering
tempering
1. In heat-treatment, reheating hardened steel or hardened cast iron to a given temperature below the eutectoid temperature to decrease hardness and increase toughness. The process also is sometimes applied to normalized steel. 2. In nonferrous alloys and in some ferrous alloys (steels that cannot be hardened by heat-treatment), the hardness and strength produced by mechanical or thermal treatment, or both, and characterized by a certain structure, mechanical properties or reduction in area during cold working.
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