The six main reasons for air leakage in the casting molding machine:

1. The pipeline is damaged, especially in winter when the air pipe of the molding machine is easily broken, causing air leakage in the molding machine pipeline.

2. Purchased inferior air valves without using good pneumatic components.

3. The cylinder processing of the molding machine is unqualified or the workshop fitter is not grinding finely.

4. The air pipe clamp of the molding machine was not installed properly, causing air leakage in the air pipe.

5. The air pressure of the air compressor is too low, resulting in airflow backflow.

6. The air compressor has water in its air circuit, which causes blockage, noise reduction, and air leakage