Manufacturing method of boron oxide fireproof glass

The invention belongs to the technical field of boron oxide fireproof glass, and particularly relates to a manufacturing method of boron oxide fireproof glass. The glass is characterized by comprisingmaterial component requirements of a glass substrate and the glass substrate. According to the boron oxide fireproof glass prepared by the invention, 65%-75% of SiO2 and 15%-23% of B2O3 are adopted as main composition materials of a glass substrate, and the molecular structure of the glass substrate is changed by applying radiation heat of 780-800 DEG C to the glass substrate. The surface of theglass substrate b is ensured not to be softened in a high-temperature state; meanwhile, air pressure is applied to an air column on the surface of the glass substrate b, so that the glass substrate bdoes not influence the component ratio of BO4 to SiO2; after the process is adopted, the glass substrate b has good thermal extension resistance or fire resistance, and the light transmittance is notlower than 90%. The prepared