摘要:
The invention relates to an anti-abrasion layer, comprising a mixture of irregular particles of hard material and round particles essentially free of cutting edges embedded in a matrix material and the use thereof for the production of anti-abrasion surfaces on wood materials, decorative paper, or wood fibre sheets printed with patterns for the production of parquet floors, floor laminates, furniture surfaces or work boards and for the production of wear-resistant surface layers on support materials made from metal, glass, ceramics, plastic concrete or other materials.
摘要:
The invention relates to an anti-abrasion layer, comprising a mixture of irregular particles of hard material and round particles essentially free of cutting edges embedded in a matrix material and the use thereof for the production of anti-abrasion surfaces on wood materials, decorative paper, or wood fiber sheets printed with patterns for the production of parquet floors, floor laminates, furniture surfaces or work boards and for the production of wear-resistant surface layers on support materials made from metal, glass, ceramics, plastic concrete or other materials.
摘要:
The present invention relates to sintered abrasive grit agglomerates based on aluminum oxide, having homogeneously distributed nanoscale pores in the range of 100-300 nm, with a pore volume of at least 15%. The average diameter of primary particles of the aluminum oxide primary particles is less than 5 μm, wherein said primary particles are connected to each other without additional adhesive agent.
摘要:
The present invention relates to sintered abrasive grit agglomerates based on aluminum oxide, having homogeneously distributed nanoscale pores in the range of 100-300 nm, with a pore volume of at least 15%. The average diameter of primary particles of the aluminum oxide primary particles is less than 5 μm, wherein said primary particles are connected to each other without additional adhesive agent.
摘要:
The invention relates to a wear protection layer comprising a mixture of non-uniform transparent hard material particles, which are stored in a matrix material and which comprise a Mohs hardness of at least 6 and transparent solid material particles, wherein the transparent solid material particles encompass a bi-modal grain size distribution. The invention also relates to a method for producing a wear protection layer as well as the use thereof for producing wear protection surfaces, in particular surfaces on wood fiber boards, which are provided with a a décor.
摘要:
A directional control valve arrangement includes a directional control valve with a valve spool. Using the directional control valve, it is possible to control a pressure-medium connection between a pressure port, a tank connection, and at least one working connection. A blocking valve is situated in a working passage that is connected to the working connection. The pressure in the working passage can be reduced using a pressure-release unit; the pressure-medium connection between the working passage and the tank connection is blocked by the valve spool. The pressure-relief unit has an intermediate space which is formed in the pressure-medium flow path between the blocking valve and a control edge of the valve spool that blocks the working passage to the tank port, the intermediate space being provided to accommodate a compression volume of the working passage. The intermediate space can be connected to the working passage by controlling-open the blocking valve, and the connection to the tank port is blocked by the control edge of the valve spool.
摘要:
A multifunctional instrument for use in microinvasive surgery includes an operator hand grip, a multi-lumen tube fastened on the operator hand grip, at least two guide channels coaxially configured inside the tube, and surgical instruments that are displaceably and rotationally disposed in the guide channels. The instrument also includes a shaft at whose distal end one surgical working element each is disposed. The instruments can be displaced between a rest position, in which the respective working element is retracted into the tube, and a working position, in which the respective working element projects from the distal end of the tube. The instruments can be displaced into and out of the working position by means of a motor and at least one of the instruments can be rotated in its working position by means of a motor. The instrument can be controlled by means of an electronic control that controls at least the motor-driven displacement motions and rotational motions of the surgical instruments and the tube.
摘要:
The invention relates to a trocar system for a minimally invasive work station, comprising an endoscopic instrument (2) having imaging means (3) and a device for transmitting the signals containing the image information to a display unit (6) and, as required, work tools, further comprising a trocar assembly (7 to 16) having a trocar sleeve, which is designed to receive a pin, including imaging means (8, 14), provided with a tip that is permeable to imaging media having different wavelengths, wherein the imaging means are provided to make the work field visible through the distal end of the pin and a device (16) is provided for transmitting the signals containing the image information to a display unit (6). The trocar assembly (7 to 16) and the minimally invasive instrument (3) are provided for separate use and for displaying the respective image information for the same display unit (6). The pin is provided with an on/off switch (13). The display device is equipped to display the image information transmitted by the pin when the pin is switched on and to suppress the display of the image information transmitted by the endoscopic instrument, and to display the information transmitted by the endoscopic instrument when the pin is switched off.
摘要:
A method for controlling image capturing and spatial control in a device monitored by imaging, in particular an endoscopic instrument, for examination and manipulation purposes, wherein the work region and the position and action of the device are monitored by means of one of the display means displaying the observed work region via optics. The device is held and moved by motor-driven equipment depending on the display, the respective position and intended action. The eye movements of the operating person or the line of sight during observation of the display is registered according to the eye-tracking method and used to control the image capturing and tracking and the display.
摘要:
By adding very-finely-divided or highly-dispersed titanium dioxide or aluminum titanate, optionally in a mixture with aluminum oxide, sintered products of great hardness, whose fracture toughness can be adjusted over a wide range, are obtained from aluminum hydroxide according to a sol-gel process depending on the selection of the sintering conditions. The materials are especially suitable as abrasives or for the production of ceramic powder or components.