Low-expansion glass-ceramics tableware
A glass-ceramic, low-expansion technology, applied in the field of glassware, can solve problems such as difficulty in heat treatment of glass tableware, and achieve the effects of solving self-burst, improving mechanical strength, and removing thermal stress and residual stress
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[0008] Below in conjunction with specific embodiment the present invention is described in detail:
[0009] (1) A low-expansion glass-ceramic tableware, the weight percentage of its formula is composed of: SiO 2 : 62%, P 2 o 5 : 8%, Li 2 O4.5%, MgO: 1.2%, ZnO: 1.5%, CaO: 0.8%, BaO: 3%, SrO2%, Sb 2 o 3 : 0.8%, Al 2 o 3 、TiO 2 and ZrO 2 , the Al 2 o 3 and SiO 2 The sum of the weight percentages is 80%, the TiO 2 and ZrO 2 The sum of the weight percentages is 4%;
[0010] (2) Calculate the oxides, carbonates and enough nitrates used in the batch according to the composition of the weight percentage, and accurately weigh them and mix them uniformly to form a glass batch; add the batch to the glass melting furnace that has been heated to 1560 °C , fully stirred several times during the melting process, raised the temperature to 1600°C for clarification, poured the molten glass into the mold after homogenizing and cooling down, and cooled down to room temperature throu...
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