High Temperature Electric Box Furnaces to 1700 C

Condition very good. Rebuilt inner bricks. Extra K-30, K-23 and ceiling bricks also available.

SPECS Overall dimensions 67"H x 42"W x 25"D. Hearth (K30) is 9"H x 9"W (1.5" for the elements)and 14 - 17"D. They have 3 elements on each side, Lu 14", Le 8", A2.36, paired in series and then the 3 pairs are placed in parallel. They pull 130 amps per pair at 17 volts on the secondary. Primary 220 volts, 30 amps, single phase. Step down transformer is a Teledyne, 17 to 1 at 7.5 KW. SCR is a Halmar/Rubicon 50 amps, 0-12 ma with current limiter. RKC Auto Programmer/Controller 0 - 1700C, 10% Rh/Pt thermocouple. All equipment is attached to the furnace structure.

Original cost $15,000 in equipment and welding. The WP Keith Co., in Los Angeles said they could not build them for less than $25,000 each. Buyer must pay for shipping. They are on wheels and are easily moved.

See the furnaces in action at www.Ramaura.com and follow the link to "How to make ruby"

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