摘要:
Die Erfindung betrifft ein alkalifreies Aluminoborosilicatglas mit einem thermischen Ausdehnungskoeffizienten α 20/300 zwischen 2,8 und 3,9 · 10 -6 /K, das folgende Zusammensetzung (in Gew.-% auf Oxidbasis) aufweist: SiO 2 > 58 - 65, B 3 O 3 > 6 - 11,5; Al 2 O 3 > 14 - 20, MgO > 3 - 6, CaO > 4,5 - 10, SrO 0 - 1,5 - 6 bzw. SrO 0 - 2,5 - 6, mit SrO + BaO > 3, ZnO 0 -
摘要:
The invention relates to a printing method using at least one transfer roller, whose roller surface is charged with a coating material, for example a toner. Said coating material is directly or indirectly transferred from the transfer roller to a support surface of a transfer element, before being transferred at least partially from the transfer element to a workpiece to be coated. According to the invention, the transfer element has a stretching element which forms the support surface and said support surface is stretched in the direction of the surface by means of a stretching device. This ensures that a method of this type can also be used as a simple means of coating 3-dimensional surfaces which are curved in space.
摘要:
The invention relates to a touch panel element (1) with at least one key surface (4) produced from a flexible base material pane (2) and at least one further base material pane (3). Said disks are provided with at least one electrically conductive layer (5, 6) on the surfaces facing each other. The opposite electrically conductive layers (5, 6) are spaced apart by means of a bracket (7). When pressure is exerted on the flexible base material pane (2), the electrically conductive layers (5, 6) touch in the pressure load zone which is essentially punctiform. The inventive touch panel element (1) is inter alia also designed in such a manner that at least one of the electrically conductive layers (5, 6) is subdivided into planar areas (8) (matrix elements) that may have any structure. When pressure is exerted on the flexible base material pane (2), a graded voltage, a graded current and/or a graded resistance value of the planar area (8) which is touched and thereby contacted by the respective opposite layer (5, 6) can be measured across at least one of the layers (5, 6). Said measured value is characteristic of the location of the respective planar area (8).
摘要:
The invention relates to a skull pot (1) for melting, crystallising or refining inorganic substances. Said pot comprises a pot wall (1.1), a pot bottom (1.2), an induction coil (2) which surrounds the pot wall (1.1) and by means of which high-frequency energy can be coupled into the content of the pot. The pot wall (1.1) is formed by a ring of metal pipes which can be connected to a cooling medium. Slits are embodied between adjacent metal pipes. The bottom (1.2) is provided with a discharge for the melt (3). A sleeve (4) is allocated to the discharge. The admission end (4.1) of the sleeve (4) protrudes far into the inner chamber of the skull pot (1) in such a way that, during use, the melt (3) can be withdrawn through the crystallised bottom layer (3.3) in a controlled manner without the danger of impairing quality.
摘要:
Such closeable containers are, for example, glass bottles having a tapered neck part. The container can be filled under pressure with a propellant and with a preferably medically active substance that can be sprayed as an aerosol, and the opening thereof can be closed by a dosing valve. In addition, the container comprises a plastic coating (4) which is applied around the same by injection molding and which serves to protect against shattering or splintering thus preventing injury to people when the container is damaged. In order to lower the rate of breakage while applying the coating by injection molding around the container and to permit an autoclaving at high temperatures, the plastic coating (4) is comprised of at least one reactively cross-linking plastic that can be thermally plasticized and is applied by means of injection molding according to reaction injection molding techniques.
摘要:
A device for recognising the presence and/or size of metallic pots on a heating or cooking zone of a non-metallic hotplate or cooking plate, in particular of a vitroceramic cooktop, has a measurement sensor (3) arranged in the area of the heating or cooking zone and an evaluation unit (5) connected to the measurement sensor. The measurement sensor has a primary coil (8) for generating a magnetic alternating field and a secondary coil (9) arranged in such a way that it is crossed by the magnetic alternating field of the primary coil. The evaluation unit (5) monitors the voltage induced in the secondary coil (9) by the magnetic alternating field. When a pot is set on the heating or cooking zone, this causes the induction voltage to change, the intensity of the induction voltage being dependent on the size of the pot.
摘要:
Die Erfindung betrifft ein Verfahren zur Bestimmung der Strahlenbeständigkeit von Kristallen gegenüber Arbeitswellenlängen beim späteren Gebrauch durch Bestimmung der Änderung des Absorptionskoeffizienten vor und nach Bestrahlung des Kristalls mit einer energiereichen Strahlungsquelle. Dabei wird in einer ersten Messung am Kristall oder einem Spaltstück hiervon über einen zuvor festgelegten Wellenbereich von λ 1 bis λ 2 mittels eines Spektrophotometers ein Absorptionsspektrum A bestimmt und anschließend der Kristall oder das Spaltstück mit der energiereichen. Strahlungsquelle unter Ausbildung sämtlicher theoretisch möglicher Farbzentren bestrahlt. In einer zweiten Messung des so bestrahlten Kristalles bzw. Spaltstückes wird über den gleichen Wellenbereich von λ 1 bis λ 2 ein Absorptionsspektrum B bestimmt und das Flächenintegral des aus dem Absorptionsspekrum A und dem Absorptionsspektrum B gebildeten Differenzspektrums über den Bereich der Wellenlänge λ 1 bis λ 2 bestimmt und durch die Dicke D des Kristalles dividiert. Auf diese Weise läßt sich der beim späteren Gebrauch durch die Arbeitsstrahlung induzierbare Absorptionskoeffizient Δk bestimmen.