In the plant area of the launch center, it was found that the corrosion of steel structure connection parts, heterosexual parts, bolt reinforcement plate and rotary column fixing plate was very serious.

 

At present, the lightning arrester of the plant structure is generally protected by paint, and in such a harsh corrosion environment, serious deterioration will occur in about 1 year.

 

As the flange of some facilities is seriously corroded and is directly related to the launch safety, the launch center has officially decided to use oxidation polymerization coating technology to carry out formal construction of the flange. Up to now, the oxidation polymerization coating anti-corrosion construction of all towers has been completed, and very good application results have been achieved.

Lightning protection tower is an important part of the launch tower, four lightning protection towers have experienced 15 months of high temperature and humidity environment, oxidation polymerization coating protection technology has well protected the tower structure, to ensure the successful implementation of the rocket launch mission, the launch center leaders spoke highly of. After the launch, the staff of the launch site inspected the possible impact site of the rocket air flow, and the coating did not have any damage, as well as when the coating was completed.

 

The second phase of the cladding project consists of four single towers, and the single tower flanges are protected by cladding. In addition, the parts where the bolts and nuts are connected are also protected by oxidation polymerization coating technology. In order to cooperate with the launch of the "Long March 5" carrier rocket at the end of December, the lightning protection tower cladding project was completed on schedule. On January 16, 2020, experts from the launch site organization Base Construction Office, Beijing Academy of Aerospace Engineering, Ningbo Institute of Materials and other units of the Chinese Academy of Sciences conducted on-site and conference acceptance of the project. Acceptance conclusion: The project fully meets the quality requirements of the "Unified Standard for Acceptance of Construction Quality of Construction Engineering", and is handed over to production according to the "Standard for Acceptance and Evaluation of Construction Engineering Quality", which is an excellent project.