The invention provides a manufacturing method of a fireproof cable for multifunctional
rail transit, wherein the manufacturing method belongs to the technical field of wires and cables. The manufacturing method comprises a cable core manufacturing step, a cable core cabling step, and a step of combining a cable core with a housing. The cable core is obtained through cabling one functional cable or multiple functional cables. Each functional cable and / or housing at least comprises an alkali-free
ceramic fiber yarn woven layer and a high-temperature-resistant nanometer
coating which is arranged on the external surface of the alkali-free
ceramic fiber yarn woven layer. The alkali-free
ceramic fiber yarn woven layer and the high-temperature-resistant nanometer
coating on the external surface form a
flame-retardant protective tube. Electric conduction of the cable can be kept through function of the
flame-retardant protective tube (with high
temperature resistance, nonflammability and heat insulation).
Signal connection can be kept by longer than three hours, thereby supplying reliable safe power,
signal and the like for rescue. On the condition of the
flame, the outer protective layer, the
oxygen insulating layer and the insulating layer of the cable can be automatically solidified for protecting, thereby realizing
fire resistance,
water resistance, vibration resistance, no
toxicity, environment-friendly performance, and high
temperature resistance which reaches resistance to the higher temperature above 1000 DEG C. The manufacturing method can be simultaneously used in multiple fields.