摘要:
Transparent, dyed cook top or hob with improved color display capability, consisting of a glass ceramic with high quartz mixed crystals as predominant crystal phase, whereby the glass-ceramic contains none of the chemical refining agents arsenic oxide and/or antimony, with transmission values of greater than 0.1% in the range of the visible light within the entire wavelength range greater than 450 nm, a light transmission in the visible of 0.8-2.5% and a transmission in the infrared at 1600 nm of 45-85%.
摘要:
An optically detectable, floatable arsenic- and antimony-free, glazable lithium-aluminosilicate glass that can be prestressed and the glass ceramic converted therefrom are described. The glass or the glass ceramic has a composition (in % by weight based on oxide) of essentially SiO2 55-69, Al2O3 19-25, Li2O 3.2-5, Na2O 0-1.5, K2O 0-1.5, MgO 0-2.2, CaO 0-2.0, SrO 0-2.0, BaO 0-2.5, ZnO 0-
摘要翻译:描述了一种光学上可检测的,可漂浮的无砷和无锑,可预应力的玻璃化铝 - 铝硅酸盐玻璃以及由其转化的玻璃陶瓷。 玻璃或玻璃陶瓷具有基本上为SiO 2 55-69,Al 2 O 3 19-25,Li 2 O 3.2-5,Na 2 O 0-1.5,K 2 O 0-1.5,MgO 0-2.2, CaO 0-2.0,SrO 0-2.0,BaO 0-2.5,ZnO 0- <1.5,TiO 2 1-3,ZrO 2 1-2.5,SnO 2 0.1- <1,&lt; TiO 2 + ZrO 2 + SnO 2 2.5-5,P 2 O 5 -3,Nd2O3 0.01-0.6,CoO 0-0.005,F 0-1,B2O3 0-2。
摘要:
The glass ceramic panels are non-transparent and have at least one decoration. In order to fulfill the requirements for a glass ceramic panel that provides a cooking surface for a cooking unit in a variety of different pleasing colors, especially a creamy white color shade (BISQUE), in an economical manner, the glass ceramic panel has a predominant crystalline phase of keatite mixed crystals and a full-surface decorative coating that covers at least 80 percent of the upper smooth surface of the glass ceramic substrate. The full-surface decorative coating is provided in a different color from,the glass ceramic panel. Methods for making these glass ceramic panels are described.
摘要:
The fire-resistant window of fire resistance class E according to DIN EN 357 has a window frame system (1, 6) and at least one thermally or chemically pre-stressed monolithic fire-resistant glass pane (2) mounted in the window frame system (1, 6). The at least one thermally or chemically pre-stressed monolithic fire-resistant glass pane (2) is made of a high-temperature-melting aluminosilicate glass with a softening point (log η=7.6) above 875° C., wherein η is the viscosity, and with a bending strength of over 100 N/mm2. The glass pane (2) is also substantially impermeable to ultraviolet radiation.
摘要翻译:根据DIN EN 357的耐火等级E的防火窗具有窗框系统(1,6)和至少一个安装在窗框系统中的热或化学预应力单块防火玻璃板(2) (1,6)。 所述至少一种热或化学预应力的整体式耐火玻璃板(2)由高于875℃的软化点(log eta = 7.6)的高温熔融铝硅酸盐玻璃制成,其中eta为 粘度,弯曲强度超过100 N / mm 2。 玻璃板(2)也基本上不透紫外线。
摘要:
A method for making a float glass convertible into a glass ceramic, by which a largely crystal fault-free glass can be produced. In this method the glass is cooled from a temperature (TKGmax), at which a crystal growth rate is at a maximum value (KGmax), to another temperature (TUEG), at which practically no more crystal growth occurs, with a cooling rate, KR, in ° C. min−1 according to: KR UEG KG max ≥ Δ T UEG KG max 100 · KG max , wherein ΔT=TKGmax−TUEG, and KGmax=maximum crystal growth rate in μm min−1. The float glass has a thickness below an equilibrium thickness, a net width of at least 1 m and has no more than 50 crystals with a size of more than 50 μm, especially no crystals with a size of more than 10 μm, per kilogram of glass within the net width.
摘要翻译:一种用于制造浮法玻璃可转换成玻璃陶瓷的方法,通过该方法可以生产出大量晶体无故障的玻璃。 在该方法中,将玻璃从晶体生长速率处于最大值(KG Max)的温度(T K max max)冷却到另一温度(T 实际上不再有晶体生长发生,冷却速率KR以℃为单位。min <1> sup>根据:
摘要:
This invention relates to a flat float glass that can be prestressed or transformed into a glass ceramic with high quartz mixed crystals or keatite mixed crystals. To eliminate undesirable surface defects during floating and to achieve superior characteristics of the glass or of he glass ceramic, in particular with regard to a low coefficient of thermal expansion and high light transmittance, the glass has a concentration of less than 300 ppb Pt, less than 30 ppb Rh, less than 1.5 wt. % ZnO and less than 1 wt. % SnO2, and is refined during melting without the use of the conventional fining agents arsenic oxide and/or antimony oxide.
摘要:
A lithium-aluminosilicate glass or a corresponding glass ceramic that has a content of 0-0.4SnO2, 1.3-2.7% by weight of ΣSnO2+TiO2, 1.3-2.5% by weight of ZrO2, 3.65-4.3% by weight of ΣZrO2+0.87 (TiO2+SnO2), ≦0.04% by weight of Fe2O3, 50-4000 ppm of Nd2O3 and 0-50 ppm of CoO is described. The glass or the glass ceramic is color-neutral, has a turbidity of less than 1% HAZE and a high light transmission. The glazing time for conversion of the glass into glass ceramic is especially short with less than 2.5 hours.
摘要:
Transparent or transparent dyed lithium aluminium silicate (LAS) glass ceramic material is provided that has an adapted thermal expansion. The material includes high-quartz mixed crystals as the predominant crystalline phase, and a thermal expansion between room temperature and 700° C. from 1.0 to 2.5·10−6/K.
摘要:
A transparent, colorless lithium-aluminosilicate glass ceramic plate with high-quartz mixed crystals as the prevailing crystal phase, which is provided on one side with an opaque, colored, temperature-stable coating over the entire surface or over the entire surface to a large extent, is described, which has a content of Nd2O3 of 40 to 4000 ppm, a Yellowness Index of less than 10% with a 4 mm glass (ceramic) layer thickness, and a variegation of colors of the glass or the glass ceramic in the CIELAB color system of C* of less than 5. The glass ceramic plate preferably has a composition (in % by weight based on oxide) of: Li2O 3.0-4.5, Na2O 0-1.5, K2O 0-1.5, ΣNa2O+K2O 0.2-2.0, MgO 0-2.0, CaO 0-1.5, SrO 0-1.5, BaO 0-2.5, ZnO 0-2.5, B2O3 0-1.0, Al2O3 19-25, SiO2 55-69, TiO2 1-3, ZrO2 1-2.5, SnO2 0-0.4, ΣSnO2+TiO2
摘要:
The method produces a glass-ceramic article substantially in the form of a plate with improved high temperature difference resistance or strength. The glass-ceramic article contains keatite mixed crystals (KMK) or high quartz mixed crystals (HQMK) as well as the keatite mixed crystals (KMK). The method includes heating a glass-ceramic in a high quartz mixed crystal state to form the keatite mixed crystals with a heating rate of 20 K/min to 150 K/min, preferably more than 15 K/min, especially preferably more than 20 K/min. These high heating rates increase the temperature difference resistance.