Off-the-road tyre low-external-temperature vulcanization method

The invention provides an off-the-road tyre low-external-temperature vulcanization method. According to the off-the-road tyre low-external-temperature vulcanization method, the tyre internal temperature vulcanization process remains unchanged, and the external temperature vulcanization process is adjusted, that is, low-pressure saturated steam at the pressure of 0.20 MPa-0.40 MPa and the temperature of 100 DEG C-110 DEG C is introduced into a vulcanization outer steam chamber; the vulcanized position of a tyre is transferred from the weakest vulcanized position to the center of the tyre through external temperature reduction, the pressure and temperature stability of internal and external mediums of the tyre are maintained until completion of vulcanization; and the tyre is taken out, and vulcanization is completed. The off-the-road tyre low-external-temperature vulcanization method has the advantages that the external pressure steam temperature is reduced in the tyre vulcanization process, steam is saved a lot, and energy consumption in the tyre vulcanization process is greatly reduced; the over-vulcanization degree of the tyre is reduced, the total vulcanization degree can be reduced by 20% or more, the overall vulcanization uniformity of the tyre is improved, the tyre quality is obviously improved, and the service life of the tyre is prolonged by 6%-12% compared with a tyre produced through a traditional isothermal and equipressure vulcanization process.