Stainless steel tube heat exchanger process issues

On the manufacture of stainless steel tube heat exchanger, each link will have matters requiring attention. Today for each link to talk about.

1. Material selection: select high-quality stainless steel materials, such as 304, 316L, etc., to ensure that the heat exchanger has good corrosion resistance and high temperature resistance.

2. Tube bundle manufacturing: Stainless steel tubing is cut, formed and bent to form a tube bundle structure. This can be done by automated tube bending machinery or by hand.

3. Tube bundle fixing: Fixing the tube bundle in the heat exchanger shell. Usually welded or threaded connections are used to ensure tight contact between the tube bundle and the shell to prevent leakage.

4. Sealing: Sealing is carried out between the tube sheet and the shell of the heat exchanger to prevent leakage of the medium. This can be achieved by welding, sealing strips or gaskets.

5. Welding and cleaning: Welding process control on the welding parts of the heat exchanger and cleaning treatment to ensure the quality of the welding parts and surface finish.

6. Pressure-testing and testing: The manufactured heat exchanger is pressure-tested to ensure that it withstands the design pressure. In addition, other performance tests, such as heat transfer test and leakage detection.

7. surface treatment: the heat exchanger's external surface treatment to improve its aesthetic and corrosion resistance. Common methods include polishing, spraying and plating.

In the manufacture of stainless steel tube heat exchanger, you need to pay extra attention to the above points. This is to achieve better quality requirements.