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Difference between revisions of "Gas Tight Elevators"
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[[File:Gas tight elevator.jpg|thumb|200px|right|Gas tight elevator]] | |||
'''Gas tight elevator''' is commonly used as hearth furnace in some manufacturing industries that requires large amount of heat while transferring the products. | |||
==Features== | |||
* Elevator hearth furnace for debonding and sintering | |||
* The workpieces are contained within an inconel 601 bell type retort, with a maximum load of 100kg | |||
* A Laminar flow of clean air across the product is provided | |||
* Raising and lowering of the hearth is by an elevator platform | |||
* Gas tight retort dimensions: 500mm high x 475mm maximum diameter | |||
* Maximum temperature 1100°C, working temperature 1000°C | |||
* Element type: resistance wire spiral supported in grooved ceramic side panels, arranged in a hexangonal formation to surround the retort and reduce distortion and ensure even heating and long life | |||
*Insulation: low thermal mass insulation combined with nickel chromium tungsteniron alloy hearth plate to support the load | |||
* 415-240 volts or 380-220 volts three phase and neutral, 44kW. | |||
==High temperature elevator hearth furnace== | |||
* Electrically operated elevator hearth ensures smooth loading and unloading of work piece | |||
* Chamber dimensions: 250mm high x 200mm maximum diameter, (actually an hexagonal shape chamber) | |||
* Maximum temperature: 1700°C; maximum continuous operating temperature 1650°C | |||
* Heat up time: approximately 80 minutes to 1600°C | |||
* Element type: molybdenum discillicide heating elements arranged vertically around chamber walls | |||
* Insulation: refractory brick hot face backed by ultra-high purity alumina low thermal mass insulation for rapid response rates and maximum thermal efficiency and stabilty | |||
* Dual display PID temperature controller/programmer with 8 segment pairs (type Eurotherm 3216P1) plus independent overtemperature controller (type Eurotherm 2116) to protect from overheating | |||
* Type B thermocouple with 0.5mm diameter wire | |||
* 415-240 volts three phase with neutral, 9kW | |||