摘要:
Gas cooking appliances having glass or glass-ceramic plates for cooking surfaces also having gas-radiation burners that are positioned below the plate or atmospheric burners that are recessed in the plate. With gas radiation burners, care must be taken to ensure a thermally advantageous discharge of exhaust gases that are produced and with atmospheric burners, care must be taken to ensure an adequate supply of primary air. Accordingly, the glass or glass-ceramic plate forming the cooking surface is partially bent out of the cooking surface plane to form an adhesive-free exhaust air duct or fresh air opening in the bent area. The exhaust air duct and fresh air opening are free of ventilation lattices.
摘要:
Disclosed is a modularly constructed and variably configurable cook top arrangement of ready-made single modules each containing in a frame construction all parts necessary for operation as a burner module, exhaust component, blower unit, control module, signal and display unit, or other components, having a glass ceramic cook top in which the individual modules have shaped metal parts to which materials for thermal insulation are joined, and which have fastening means by which the modules can be arranged with one another and with the frame and can be fastened releasably to form a single functional unit, and on which openings, bores and recesses are provided as an assembling means for fastening the parts necessary for operation and for leading in and fixing the wiring and/or the ignition, control, and safety and indicating systems.
摘要:
A plastic vessel has a barrier coating comprising sequentially arranged barrier layers of organic polymer and of inorganic oxides, nitrides or oxynitrides. The barrier coating preferably has at least two inorganic barrier layers. The thickness of the inorganic barrier layers lies between 2 and 300 nm and the thickness of the organic barrier layer lies between 2 and 1000 nm. The total thickness of the layer packet should not exceed 0.1 mm.
摘要:
The invention provides a device for clasp the rims of openings in shaped bodies made of glass ceramic, glass or ceramic, especially openings for the passage of atmospheric gas burners on cooking hobs or stovetops, from mechanical damage and for preventing soiling and damage to arrangements situated underneath the shaped body owing to the ingress of liquids through the openings in the shaped body. The clasp reaches over the rim of the respective opening and extends onto both the top and bottom sides of the shaped body. A sealing and/or heat-insulating material is advantageously inserted between the shaped body and the clasp.
摘要:
Disclosed is a radiant burner with a burner chamber and a gas-permeable burner plate made of ceramic or metal, especially for cooking areas or individual cooking locations, the heating surface of which is composed of glass ceramic, the gas-permeable burner plate having regions of different gas permeability.
摘要:
An alkali-free aluminoborosilicate glass preferably with a thermal expansion .alpha..sub.20/300 of about 3.7 .times.10.sup.-6 /K, an annealing temperature OKP of above 700.degree. C., a treatment temperature V.sub.A of less than 1220.degree. C., and very good chemical stability, which can be produced in a float unit and has the following composition (in % by weight based on oxide): SiO.sub.2 52-62; B.sub.2 O.sub.3 4-14; Al.sub.2 O.sub.3 12-20; MgO 0-8; CaO 4-11; BaO 0-2; ZnO 2-8; ZrO.sub.2 0-2; SnO.sub.2 0-2. The ratio of Al.sub.2 O.sub.3 /B.sub.2 O.sub.3 is preferably equal to or greater than 3. The glass is especially suitable for use in display technology.
摘要翻译:优选具有约3.7×10 -6 / K的热膨胀α20/300,高于700℃的退火温度OKP,小于1220℃的处理温度VA的无碱铝硼硅酸盐玻璃,并且非常好 化学稳定性,其可以在浮选单元中产生并具有以下组成(以氧化物重量%计):SiO 2 52-62; B2O3 4-14; Al2O3 12-20; MgO 0-8; CaO 4-11; BaO 0-2; ZnO 2-8; ZrO2 0-2; SnO2 0-2。 Al 2 O 3 / B 2 O 3的比例优选等于或大于3.玻璃特别适用于显示技术。
摘要:
Substantially spherical particles of lithium silicates with improved mechanical properties and improved surface quality are provided, which are particularly suited for use as breeding material for tritium. The particles are characterised in that they contain additions of tellurium and/or tellurium compounds.
摘要:
Arrangement for analysis of substances at or near the surface of an optical sensor with at least one wave-guiding film and at least one multidiffraction grating coupler for in-coupling and out-coupling of light beams, in which at least two light beams enclosing an angle .alpha. relative to one another are coupled in and by which at least two light beams enclosing an angle .phi. relative to one another are coupled out, and with a detection system for detecting the out-coupled light beams, wherein in-coupling and out-coupling are effected on one and the same side of the sensor and the in-couple beams and out-couple beams lie in different quadrants of the plane of incident light, and the angle .alpha. between the in-couple beams is greater than the angle .phi. between the out-couple beams. The arrangement has multiple uses for determining physical or chemical measured quantities based on the interaction of the guided light waves with the medium at or near the sensor surface.
摘要:
A cooking apparatus includes at least one atmospheric gas burner and mutually adjacent first and second component assemblies. A frame holds the first and second component assemblies and the first component assembly includes a continuous glass-ceramic cook plate defining a planar surface and having a breakthrough formed therein for holding the gas burner in the cook plate. The cook plate has a boundary edge facing toward the second component assembly. The cook plate and the second component assembly conjointly define a gap therebetween at the boundary edge sufficiently wide to permit an adequate supply of primary air to pass from the ambient to below the cook plate and to the gas burner. A device is mounted in the gap for guiding the primary air into the gap. The device is attached seal-tight to at least one of the component assemblies and extends above the planar surface to prevent liquid on the planar surface from entering the frame through the gap.
摘要:
Process for producing very pure platinum materials dispersion-reinforced with Y.sub.2 O.sub.3 and having high strength and extensibility, even in the temperature range >800.degree. C., from platinum powder by mechanical alloying, which comprises the process stepspreparing platinum powder of high purity and low particle size of from 2 to 10 .mu.m,introducing and dispersing Y.sub.2 O.sub.3 particles >1 .mu.m in the platinum powder by milling in a platinum vessel using milling media of zirconium oxide,degassing the milled product under a vacuum of better than 10.sup.-3 mbar and with an increase in temperature to at least 1200.degree. C. in a platinum capsule for a period of up to 48 hours,gastight welding of the evacuated capsule and hot isostatic pressing at 1350.degree. C. and 200 MPa to give blocks of compact dispersion-reinforced platinum having a density of 100%,producing semi-finished parts and foils from these dispersion-reinforced platinum materials, these parts and foils havinga platinum purity of at least 99.95%,a tensile strength R.sub.m from 300 to 350 MPa,an extensibility A of 15-25% and agrain stability up to 1400.degree. C.
摘要翻译:用于生产用Y2O3分散增强并具有高强度和延展性的非常纯的铂材料的方法,即使在> 800℃的温度范围内,通过机械合金化从铂粉末制备,其包括制备高纯度和低的铂粉末的工艺步骤 颗粒尺寸为2至10μm,通过使用氧化锆研磨介质在铂容器中研磨将铂粉末中的Y 2 O 3颗粒引入并分散在铂粉末中,在高于10-3mbar的真空下对研磨产物进行脱气 并且在铂胶囊中将温度升高至至少1200℃长达48小时,在1350℃和200MPa下对抽真空的胶囊进行气密焊接和热等静压,得到紧密分散的块 密度为100%的强化铂,由这些分散强化的铂材料生产半成品和箔,这些部分和箔的铂纯度至少为99.95% 拉伸强度Rm为300〜350MPa,伸长率A为15〜25%,晶粒稳定性高达1400℃。