Lucifer Furnaces Equips R. Hueter with Benchtop Oven for Heat Treating with Nitrogen


R. Hueter Co. in Beverly, Massachusetts, a northeast CNC machine shop specializing in male and female RF connector contact production, has added a Lucifer Furnaces heat-treating oven to meet its growing heat-treating needs.

Model 42GT-H12 was customized as a benchtop unit. With a chamber size of 9-inch by 12-inch by 12-inch, the oven is insulated with 5 inches of both insulating firebrick and mineral wool backup, and 4 kilowatts of power allows fast heat-up to 1200°F. GT ovens, built for operation using inert atmosphere, are crafted with a continuously welded outer steel shell and gasketed roof plate. A strong seal on the double pivot door is achieved with a square gasket around the door perimeter to form a tight seal to the oven faceplace. Swing bolts with T-handles make clamping easy. The stainless-steel liner baffles the work chamber from the sidewall heating elements and directs the airflow horizontally through the chamber for uniform heating. Hueter chose a Honeywell DC2500 temperature controller with a soak timer to shut off heating elements at the end of a programmed cycle, in addition to a flowmeter mounted and piped to the oven for easy connection to the atmosphere supply.

Hueter plans to use the furnace primarily around 600°F for two-hour cycles to achieve a specific Rockwell hardness with small lots of BeCu pins under a nitrogen atmosphere to reduce surface oxidation in order to achieve a scale-free, bright finish.

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