This invention discloses a door leaf sealing structure, an armored door, and a door leaf manufacturing process, belonging to the field of door leaf
manufacturing technology. The door leaf includes an inner panel, an outer panel, and aluminum profiles for side frames respectively disposed on both sides of the door leaf. The contact surface between the side frame aluminum profiles and the panel has a concave-
convex structure, with multiple independent injection cavities on each convex surface. Each injection cavity has an injection
nozzle penetrating the wall of the side frame aluminum profile for injecting
sealant into the corresponding cavity. The segmented
welding provides structural connection strength, while the cured
sealant in each injection cavity provides sealing performance, forming a complementary combination. Each injection cavity is independent, achieving a
relay-like renewal of sealing performance. The sealing quality of each side can be quantitatively verified before leaving the factory, and the sealing status can be continuously monitored during use by reading air pressure values, allowing users to visually judge the sealing status without specialized equipment.