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Maintain Alumina Tube in High temperature Tube furnace
Post Time : 2013-12-6 11:45:05    Hits : 1900      Article Source : CS Ceramic   
 

How to Use and Maintain Alumina Tube in High temperature Tube furnace

 

Alumina tube is very brittle and easy to damage. You must handle alumina tube very

carefully to keep longer service life. Please take following suggestion on how to use

alumina tube.

 

1. Please heat and cool tube furnace slowly. 5 degree centigrade / min is suggested Max 

heating and cooling rate. Slower is better. Please never take furnace cooling without

control from high temperature to room temperature, which will cause alumina tube

cracking immediately

 

2. Please always keep inside tube clean. Never leave some chemical inside tube to

avoid the chemical react with Al2O3 tube which will cause tube cracking. Please use a 

proper crucible contain your sample.

 

3. Never push a sample into alumina tube when its temperature is hot.

 

4. Please always remember to put foam refractory block in two end of tube to avoid hot 

radiation damage O-ring on flange. The ceramic blocks shall locate at edge of furnace 

case as drawing below.

 

5. Please don’t use tube furnace at high vacuum when temperature is more than 1500

degree centigrade. Please always vacuum furnace under cold condition, then fill gas in 

if you try to heat sample above 1500 degree centigrade.

 

6. In order to achieve longest tube service life. It is good idea to keep furnace at 200 degree

centigrade in the case we don’t use the tube furnace.

 

CS Ceramic CO.,Ltd offer Ceramic alumina tubes in single, double and 4-bore tubing and

oval double bore tubing at stocked lengths.If a special shaped ceramic required, please

advise and we will be pleased to quote.   our website: www.csceramic.com

 Next :  MABOR Cupels  
 Prev :  What should pay attention to when use alumina products?  
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