How to ensure the purity and flow stability of the atmosphere?
To ensure the purity and flow stability of the atmosphere in the rotary tube furnace, the following methods can be adopted:
1. Gas source selection
- Select high-quality and high-purity gas sources. For example, use inert gas, reducing gas, etc. with purity that meets the requirements.
- Purchase gas from reliable suppliers and ensure that the gas is not contaminated during storage and transportation.
2. Gas purification device
- Before the gas enters the tube furnace, install appropriate gas purification equipment, such as filters, purifiers, etc., to remove impurities, moisture and other pollutants in the gas.
3. Flow control device
- Equipped with precise flow controllers, such as mass flow controllers (MFC) or rotor flowmeters.
- Regularly calibrate the flow controller to ensure the accuracy of its measurement and control.
4. Sealing performance
- Ensure that the furnace body, air inlet and air outlet of the tube furnace have good sealing performance to prevent gas leakage.
- Regularly check and replace seals, such as sealing rings, gaskets, etc.
5. Stable gas supply pressure
- Ensure the stable pressure of the gas supply system, which can be achieved by installing a pressure regulating valve.
6. Monitoring system
- Install gas monitoring equipment to monitor the composition and flow in the atmosphere in real time.
- Set alarm thresholds and issue an alarm in time when the gas purity or flow deviates from the set value.
7. Regular maintenance and inspection
- Regularly check whether the gas pipeline, valves, connectors, etc. are leaking, blocked or damaged.
- Clean and maintain the gas purification device and flow control device.
8. Optimize the operating process
- Develop standardized operating procedures to standardize the gas introduction and adjustment process.
Through the above measures, the purity and flow stability of the atmosphere in the rotary tube furnace can be effectively guaranteed, providing reliable conditions for experiments and production.
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