FIELD: chemistry.
SUBSTANCE: invention relates to method of obtaining thermally hardened glass. At the first stage glass is heated, at the second stage it is subjected to sharp cooling with application of medium, with heat transfer coefficient higher than 400 W/m2·K. Before or during the second stage glass is subjected to process of laser cutting and/or polishing by flame and/or treatment with AlCl3. At the second stage cooling with application of liquid phases is carried out by dispersing cooling and/or it is subjected to regulated cooling in plate-type refrigerator.
EFFECT: increased strength of less than 2,8 mm thick glass.
17 cl, 6 ex, 9 dwg
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