Molding tube core of high-pressure rubber tube and process for preparing high-pressure rubber tube by using molding tube core

The invention discloses a molding tube core of a high-pressure rubber tube and a process for preparing the high-pressure rubber tube by using the molding tube core. The molding tube core of the high-pressure rubber tube consists of a steel wire rope and a rubber layer coated on the surface of the steel wire rope, wherein the rubber layer is prepared from the following raw materials in parts by weight: 95+/-10 parts of crude rubber, 75+/-10 parts of reinforcing agent, 15+/-5 parts of vulcanizing agent, 5+/-2 parts of age inhibitor and 20+/-5 parts of process oil. By using the process for preparing the high-pressure rubber tube by using the high-pressure molding tube core, the molding tube core has good thermal aging resistance and a stable outline dimension, cannot be influenced by the vulcanizing temperature during vulcanization molding of the high-pressure rubber tube, and can be used repeatedly; and by using the molding tube core to prepare the high-pressure rubber tube, a semi-finished rubber tube and a fi