Operation steps of gas replenishment in vakuum atmosfeer oond

The manufacturer of the vacuum atmosphere furnace tells you how to add gas to the electric furnace for protection. The vacuum atmosphere furnace needs to be filled with gas before it is used. So how to carry out effective gas supplement protection? Atmosphere furnace technicians will introduce the operation steps of electric furnace for gas supplement:

1. Before the electric furnace heats up, you can fill the vacuum atmosphere furnace with protective gas through the upper, lower, last three or two furnace washing methods, and open the needle valve of the exhaust port to a larger value, which is convenient The air in the furnace cavity can be fully exhausted.

2. Pass protective gas about ten times the volume of the furnace cavity into the furnace cavity, so the air concentration inside the electric furnace is reduced to about 10ppm.

3. Observe the air concentration in the furnace cavity of the vacuum atmosphere furnace. If it meets the requirements of the product processing technology, then close all the furnace ports and reduce the needle valve of the exhaust port at this time. The purpose is to prevent air from pouring back into the electric furnace cavity.

4. During the use of the vacuum atmosphere furnace, the flow control and the exhaust port opening are mixed to adjust the method to make the furnace cavity of the electric furnace be filled with slight positive pressure to prevent the air outside the furnace cavity from entering the furnace cavity.

5. Take out the processed parts after they are finished. Generally, in order to facilitate the next operation to reduce the operation steps, the protective gas will continue to be added to the furnace cavity of the vacuum atmosphere furnace to maintain the micro pressure in the electric furnace.