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Laboratory Muffle furnace was added to the protective gas me
SOURCE:PROTECH(CHINA) HOLDINGS LIMITED Time£º2015-05-13 08:48
Cooked with a laboratory muffle furnace operation friends you should know before circuits are required to supplement its internal gas. Then we know how to do make-up gas?
In fact, this little laboratory muffle furnace used in the specification is a little reminder, then we let the work of skilled staff for this operation as we introduce electric furnace box next to other supplementary steps.
The first step is heated in an electric furnace before, by using the up, down, or after two or three individual wash furnace filled way protective gas into the furnace, and the exhaust port of the needle valve to open to the maximum, so that The fully air oven cavity to drain.         
The second step is to pass into the cavity about 10 times the volume of the cavity of the protective gas, in terms of box-type furnace interior air concentration dropped to about 10ppm.
The third step is to observe the concentration of air in the cavity, if they meet the requirements of product processing, this time to close all wash mouth will transfer small vent needle. The purpose is to prevent air intrusion into the box furnace chamber.
The fourth step is to use the process in an electric furnace through the flow control and exhaust opening of the mixing adjustment methods to make box-type furnace at a slightly positive pressure of the cavity filling, to prevent outside air from entering the furnace chamber cavity;
The fifth step is taken after processing parts produced. Usually in order to reduce the operation time for next steps, we will continue to fill the cavity protection to keep the box furnace gas furnace positive pressure.

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