A hot-bending forming method for laminated glass on a high-speed locomotive

Abstract

The invention relates to the technical field of laminated glass, especially to laminated glass on high-speed locomotives, specifically to a method for hot bending and shaping of laminated glass on a high-speed locomotive. The method comprises the following steps: placing at least two glass substrates on a hot bending and shaping mold; placing at least one auxiliary heating cover plate on the uppermost glass substrate; carrying out heating from above to allow the at least two glass substrates to reach a softening temperature and to be attached to the hot bending and shaping mold; and cooling the at least two glass substrates, and then removing the at least one auxiliary heating cover plate so as to obtain at least two bent glass plates. The method provided by the invention can realize hot bending and shaping of the laminated glass with a large spherical surface, double curvature and the like and for the high-speed locomotive; moreover, the method can filter out and buffer heat radiation, reduce direct heat impact on the uppermost glass substrate and prevent optical distortion of the uppermost glass substrate during simultaneous hot bending and shaping of the at least two glass substrates, thereby ensuring the optical quality of the glass substrates.

Description

Technical field: [0001] The invention relates to the technical field of laminated glass, in particular to laminated glass on high-speed locomotives, and in particular to a hot-bending forming method for laminated glass on high-speed locomotives. Background technique: [0002] With the rapid development of my country's locomotive industry, the speed of high-speed locomotives such as my country's self-developed EMUs has reached 160 km / h, 200 km / h, 250 km / h, 300 km / h or even 350 km / h And above, correspondingly, the window glass on the high-speed locomotive, especially the windshield needs higher safety performance, and under the existing technical conditions, it is far from enough to meet the demand simply by strengthening the mechanical strength of the glass substrate; at the same time, due to Passengers are demanding more and more from window glass in terms of appearance, visual effect and optical quality. According to the existing thermal bending forming method of laminated g...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the disadvantages of the above-mentioned prior art that optical distortion is easily formed when hot-bending the laminated glass on the high-speed locomotive, which leads to poor optics, and the process steps are complicated and difficult to meet the hot-bending molding of three or more glass substrates. , providing a hot bending method for laminated glass on high-speed locomotives

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