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750C Hermetic, Optical Window Design

750C Hermetic, Optical Window Design

750C Hermetic, Optical Window Design

(OP)
Good-day,

  In my research, I will be photographing droplets resting on horizontal surfaces inside a steel well in a furnace running at 750C (1400F), though I may later wish to raise the temperature by a few hundred degrees celsius.

  To permit imaging, I require an approximately 10-13 cm (4-5") diameter by 2-5 mm (1/8") thick window in the side of the well (open-topped, stainless steel, cylinder, 15 cm (6") diameter, 6.5 cm (1/4") thick walls) that can withstand these temperatures, while remaining hermetically sealed (during later experiments, we will be sealing the top of the well and running an HCl atmosphere).

  As the well is a cylinder, the simple flat, bolt-on type windows I have seen in appropriate sizes do not seem as though they could be modified to work, and most do not meet my temperature requirements.

  I was thinking if it would be possible to buy a window (i.e., quartz) hermetically sealed to a ring of metal which I could then weld or screw onto a (threaded) fixture previously welded to the well wall (i.e., a cylindrical tube open at both ends, with one end welded to the well and the other to be attached to the window assembly).  If the threaded design were pursued, I would also require an appropriate sealant.

I am interested as to possible window designs or any suggestions or information (i.e., suppliers, etc.) that would be suitable, as well as being low cost (i.e, < CAN$500 (~US$380), excluding labour).  

Thank you for your time.

Auf wiedersehen,

James

RE: 750C Hermetic, Optical Window Design

(OP)
Good-day,

I forgot to mention the maximum temperature I would be operating at is 850C and no considerations need be taken for high pressure.

Auf wiedersehen,

James

RE: 750C Hermetic, Optical Window Design

If you are using IR imaging, a sapphire window one of the few choices you have. Be sure you know what wave length you are viewing when choosing a window.

RE: 750C Hermetic, Optical Window Design


There are several type for chemical reactor aplications

Try to get contact about with these companies:


JM Canty Inc. (sales@jmcanty .com)

Cyclops Industries (South Charleston, W. VA. 25303)

Contardi S.r.l. (Colle Brianza, Lecco-Italy fax 0039-0399260329)

LINNEMANN (info@linnemann-online.com)

Lumiglas (fax 0049-2304/205205   Germany)

Tri-Clover inc.

NovAseptic Italia S.r.l. (novaseptic@libero.it)


Many other supplier for clamp connection.

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