How to deal with the open edge of the PTFE lining of the electromagnetic flowmeter?

If the PTFE (polytetrafluoroethylene) lining of an electromagnetic flowmeter shows signs of edge separation during installation or use, it may be due to the soft nature of PTFE, which can be affected by stress or improper handling. To address or prevent this issue, the following methods can be considered:

1. Trim and repair the lining: If the edge separation is minor, the affected area can be trimmed and smoothed, followed by high-temperature welding or the use of specialized adhesive to repair the damage. However, this method is suitable only for minor damage.

2. Reinforce the edges: After repairing the separation, you can reinforce the lining edges by adding a protective layer or installing sealing rings around the edges to prevent future separation.

3. Redo the lining: If the separation is severe or repair efforts are ineffective, it may be necessary to remake or replace the lining. Although this method can be costly, it ensures long-term stability and durability during use.

4. Avoid installation stress: During installation, care should be taken to avoid excessive mechanical stress on the lining. Especially in high-pressure and high-temperature environments, proper support or cushioning materials may be needed to prevent the lining from deforming due to uneven pressure.

5. Maintenance and inspection: Regularly inspect the condition of the flowmeter's lining to detect and address any potential problems in time, preventing edge separation from worsening.

The choice of treatment depends on the specific situation and the severity of the edge separation. If the issue persists, it may be necessary to consider improvements in equipment structure or operating methods.