摘要:
The subject of the invention is an induction cooking device comprising at least one inductor positioned under a thermally or chemically strengthened glass plate, the composition of the glass being of lithium aluminosilicate type.
摘要:
An induction cooking device including at least one inductor positioned under a thermally strengthened glass plate, the composition of which glass is not of lithium aluminosilicate type, characterized in that the glass has the following characteristics: its thickness is at most 4.5 mm, the c/a ratio of the glass before strengthening is at most 3.0 after Vickers indentation under a load of 1 kg, c being the length of the radial cracks and a being the half-diagonal of the Vickers impression, the σ/(e·E·α) ratio is at least 20 K·mm−1, or even 30 K·mm−1, σ being the maximum stress generated at the core of the glass by the thermal strengthening in Pa, e being the thickness of the glass in mm, E being the Young's modulus in Pa and α being the linear thermal expansion coefficient of the glass in K−1 is provided.
摘要:
The subject of the invention is an induction cooking device comprising at least one inductor positioned under a thermally or chemically strengthened glass plate, the composition of the glass being of lithium aluminosilicate type.
摘要:
The subject of the invention is an induction cooking device comprising at least one inductor positioned under a thermally strengthened glass plate, the composition of which glass is not of lithium aluminosilicate type, characterized in that the glass has the following characteristics: its thickness is at most 4.5 mm, the c/a ratio of the glass before strengthening is at most 3.0 after Vickers indentation under a load of 1 kg, c being the length of the radial cracks and a being the half-diagonal of the Vickers impression, the σ/(e.E.α) ratio is at least 20 K.mm−1, or even 30 K.mm−1, σ being the maximum stress generated at the core of the glass by the thermal strengthening in Pa, e being the thickness of the glass in mm, E being the Young's modulus in Pa and α being the linear thermal expansion coefficient of the glass in K−1.
摘要:
The present invention relates to a glass substrate comprising at least one ion pattern obtained by a treatment for exchanging the alkali metal ions of the glass with silver ions originating from an outside source, said substrate being formed from a glass having a specific composition and said ion pattern having a variation in the refractive index greater than or equal to 0.03, a depth greater than or equal to 100 μm and a light transmission coefficient at 410 nm (TL410) greater than or equal to 60%.
摘要:
Glazings are preshaped before putting them through a step of tempering by contact. In a preferred variant, tempering by contact is applied only the central area of the glazing and the marginal zone thereof is tempered by blowing cold air.
摘要:
This invention concerns a thermally stable glass composition, which comprises the following constituents in the following proportions by weight: ______________________________________ SiO.sub.2 45 to 68% Al.sub.2 O.sub.3 0 to 20% ZrO.sub.2 0 to 20% B.sub.2 O.sub.3 0 to 10% Na.sub.2 O 2 to 12% K.sub.2 O 3.5 to 9% CaO 1 to 13% MgO 0 to 8% ______________________________________ the sum of the contents of the oxides SiO.sub.2, Al.sub.2 O.sub.3 and ZrO.sub.2 remaining equal to or less than 70%, the sum of the oxides Al.sub.2 O.sub.3 and ZrO.sub.2 being equal to or greater than 2%, the sum of the alkaline oxides Na.sub.2 O and K.sub.2 O being equal to or greater than 8%, said composition comprising, if desired, the oxides BaO and/or SrO in proportions such that: 11%.ltoreq.MgO+CaO+BaO+SrO
摘要翻译:PCT No.PCT / FR95 / 01347 Sec。 371日期1996年12月13日第 102(e)日期1996年12月13日PCT提交1995年10月13日PCT公布。 公开号WO96 / 11887 日期1996年04月25日本发明涉及一种热稳定性玻璃组合物,其包含以下重量比的以下组分:SiO 2 45至68%Al 2 O 3 0至20%ZrO 2 0至20%-B 2 O 3 0至10% - Na2O 2〜12% - K2O 3.5〜9% - CaO 1〜13% - MgO 0〜8% - 氧化物SiO 2,Al 2 O 3和ZrO 2的含量之和等于或小于70% 氧化物Al 2 O 3和ZrO 2等于或大于2%,碱性氧化物Na 2 O和K 2 O的总和等于或大于8%,如果需要,所述组合物包含氧化物BaO和/或SrO,其比例使得 :11% = MgO + CaO + BaO + SrO <30%该玻璃组合物可用于生产用于发射屏幕或耐火玻璃板的基板。
摘要:
A glass spacer, obtained by a drawing process, having an approximately polygonal bearing cross-section with at least one rectangle having the dimensions a, b, and the spacer having a height 1, the dimensions of the glass spacer satisfying the relationship of a
摘要翻译:通过拉伸工艺获得的玻璃间隔件具有近似多边形的轴承横截面,其具有尺寸为a,b的至少一个矩形和具有高度1的间隔件,玻璃间隔件的尺寸满足a < 300μm,0.2mm <1 <20mm,b / a <1000,优选b / a <200。
摘要:
This invention concerns a thermally stable glass composition, which comprises the following constituents in the following proportions by weight:______________________________________ SiO.sub.2 45 to 68% Al.sub.2 O.sub.3 0 to 20% ZrO.sub.2 0 to 20% B.sub.2 O.sub.3 0 to 10% Na.sub.2 O 2 to 12% K.sub.2 O 3.5 to 9% CaO 1 to 13% MgO 0 to 8%______________________________________the sum of the contents of the oxides SiO.sub.2, Al.sub.2 O.sub.3 and ZrO.sub.2 remaining equal to or less than 70%, the sum of the oxides Al.sub.2 O.sub.3 and ZrO.sub.2 being equal to or greater than 2%, the sum of the alkaline oxides Na.sub.2 O and K.sub.2 O being equal to or greater than 8%, said composition comprising, if desired, the oxides BaO and/or SrO in proportions such that:11%.ltoreq.MgO+CaO--BaO+SrO>30%This glass composition may be used for the production of substrates for an emissive screen or for that of a fire-resistant pane.
摘要翻译:本发明涉及一种热稳定性玻璃组合物,其包含以下重量比的以下组分: - SiO 2 45至68%-Al 2 O 3 0至20%-ZrO 2 0至20%-B 2 O 3 0至10%Na 2 O 2至12 % - K2O 3.5〜9% - CaO 1〜13% - MgO 0〜8% - 氧化物SiO 2,Al 2 O 3和ZrO 2的含量的总和等于或小于70%,氧化物Al 2 O 3和ZrO 2的总和 等于或大于2%,碱性氧化物Na 2 O和K 2 O的总和等于或大于8%,如果需要,所述组合物包含氧化物BaO和/或SrO,其比例使得:11% = MgO + CaO-BaO + SrO> 30%该玻璃组合物可用于生产用于发射屏幕或耐火玻璃板的基板。
摘要:
A covering which is resistant to high temperature and intended to be inserted between tools and plates of hot glass includes a knitted fabric formed from an assembly of stitch wales which gives at least one plane face. The knitted fabric is provided with openings, the polygonal shape of which is determined by a plurality of non-bound segments each including a portion of a stitch wale, and of bound segments formed by making more than four stitches common to two adjacent stitch wales. The making common is obtained by the mutual transfer of stitches from one wale to the other.