Top Hat Furnace Models from Deltech Inc

Top hat furnace models are employed when the stability of the product is vital to the process. The furnace body moves up and down over the fixed load platform or kiln car in the “top hat” furnace design, keeping the product load completely undisturbed.

This is best suited forgradient glass manufacturing or when multiple layers of kiln furniture are present. These furnaces are obtainable in benchtop and production scale sizes, with operating temperatures ranging from 800 °C to 1800 °C.

Top Hat Furnaces.

Top hat furnaces. Image Credit: Deltech, Inc

Features

Deltech top hat furnaces provide superior temperature uniformity. The heating elements are spaced evenly on all four sides.

The unique pin-and-washer anchoring system in production-size top hats sustains structural integrity via high fires and rapid cycling.

Furnace linings of the highest quality board and blanket allow rapid heating and cooling.

Pneumatic (100 psi facility air required) or electric actuation systems are available. The pneumatic system has varying travel speeds, whereas the electric system has a fixed rate of about 88 cm per minute.

Durable fiberboard exterior panels are offset from the furnace shell to allow for convection cooling, which keeps the furnace skin temperatures safe without cooling fans.

Forced air and vent flap options are available to help with binder burnout and to increase cooling rates as needed. Designs for “vortex” air flow.

Multi-car systems that can be programmed.

Atmosphere envelope furnaces for inert gas and up to 5% hydrogen mixture processing.

The 1500, 1600, 1700, and 1800 °C models continuously operate at the maximum rated temperature.

Would an accelerated ramp rate benefit the process? Consider the “fast fire” option, which can achieve temperatures up to 1000 °C based on furnace capacity. Both laboratory scale and production size furnaces are available.

Deltech designs and manufactures furnaces to the process specifications, ranging from modified standard models to custom systems.

Deltech Top Hat Furnaces at a Glance

Source: Deltech, Inc

Model	Workplace Size	Furnace Dimensions	Power Requirements for 1700°/1800°	Weight
DT-TH-6	6” cubed152 mm cubed	35” x 25” x 42”89 cm x 64 cm x 107 cm	3 kW / 3 kW	170 LB / 77 KG
DT-TH-8	8” cubed203 mm cubed	36.5” x 25.5” x 44”93 cm” x 65 cm x 112 cm	6 kW / 7.5 kW	270 LB / 123 KG
DT-TH-10	10 “ cubed254 mm cubed	38.5” x 27.5” x 49”98 cm x 70 cm x 124 cm	6 kW / 10 kW	710 LB / 323 KG
DT-TH-12	12” cubed305 mm cubed	42.5” x 37” x 51”108 cm x 94 cm x 130 cm	15 kW / 15 kW	850 LB / 386 KG
DT-TH-14	14” cubed356 mm cub	45.5” x 39” x 53”116 cm x 99 cm x 135 cm	15 kW / 15 kW	1095 LB / 498 KG
DT-TH-16	16” cubed406 mm cubed	48.5” x 41” x55”123 cm x 104 cm x 140 cm	20 kW / 20 kW	1350 LB / 614 KG
DT-TH-20	20” cubed508 mm cubed	69” x 71.5” x 100.5”175 cm x 182 cm x 255 cm	36 kW / 36 kW	2600 LB / 1182 KG
DT-TH-24	24” cubed610 mm cubed	74” x 76” x 109”188 cm x 193 cm x 277 cm	50 kW / 50 kW	3250 LB / 1477 KG
DT-TH-36	36” cubed914 mm cubed	85” x 84” x 121”216 cm x 213 cm x 307 cm	75 kW / 90 kW	4260 LB / 1936 KG
DT-TH-48	48” cubed1219 mm cubed	90” x 94” x 162”229 cm x 239 cm x 411 cm	115 kW / 140 kW	5500 LB / 2500 KG

Atmosphere Envelope (AE)*

Model	Workplace Size	Furnace Dimensions	Power Requirements for 1700°/1800°	Weight
DT-TH-AE-6	6” cubed152 mm cubed	34.5” x 20.5” x 38.5”88 cm x 52 cm x 98 cm	3 kW / 3 kW	170 LB / 77 KG
DT-TH-AE-8	8” cubed203 mm cubed	36.5” x 22.5” x 40.5”93 cm” x 57 cm x 103 cm	6 kW / 7.5kW	270 LB / 123 KG
DT-TH-AE-10	10 “ cubed254 mm cubed	38.5” x 27.5” x 49”98 cm x 70 cm x 124 cm	6 kW / 10 kW	710 LB / 323 KG
DT-TH-AE-12	12” cubed305 mm cubed	45” x 38” x 54.5”114 cm x 97 cm x 138 cm	15 kW / 15 kW	850 LB / 386 KG
DT-TH-AE-14	14” cubed356mm cub	47” x 40” x 70”119 cm x 102 cm x 178 cm	15 kW / 15 kW	1095 LB / 498 KG
DT-TH-AE-16	16” cubed406 mm cubed	49” x 42” x72”124 cm x 107 cm x 183 cm	20 kW / 20 kW	1350 LB / 614 KG
DT-TH-AE-20	20” cubed508 mm cubed	65.5” x 66.5” x 86.5”166 cm x 169 cm x 220 cm	36 kW / 36 kW	2600 LB / 1182 KG
DT-TH-AE-24	24” cubed610 mm cubed	69” x 70.5” x 90.5”175 cm x 179 cm x 230 cm	50 kW / 50 kW	3250 LB / 1477 KG
DT-TH-AE-36	36” cubed914 mm cubed	81” x 82.5” x 102.5”206 cm x 210 cm x 260 cm	75 kW / 90 kW	4260 LB / 1936 KG
DT-TH-AE-48	48” cubed1219 mm cubed	108” x 161” x 165”274 cm x 409 cm x 419 cm	115 kW / 140 kW	5500 LB / 2500 KG

* Maximum operating temp in inert gases is 100 °C lower than rated furnace temperature due to element limitations.

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