摘要:
The invention concerns the area of combustion technology and relates to a device and a method, which can be used, for example, for the combustion of wood or coal in the domestic sector. The object of the invention is to provide a device which is technically simple and cost-effective, and with which a substantially continuous exhaust gas treatment can be carried out, with regards to the discontinuous working method of the single-chamber combustion system. The solution according to the invention consists of a device, wherein at least one component is arranged in the exhaust gas flow, which component entirely or partially consists of a catalytically effective material, and wherein at least one component is also arranged in the exhaust gas flow downstream of the component made of a catalytically effective material in the flow direction, which component consists of a material having a higher volumetric heat capacity than the component made of a catalytically effective material.
摘要:
The invention relates to the field of mechanical engineering and concerns a thermal radiation shield for vacuum and protective atmosphere furnaces, which is used for effecting a thermal radiation shielding that is a good at possible. The aim of the invention consists in providing thermal radiation protective shields with a reduced weight while having an identical or lower effective emissivity. To this end, the invention provides a thermal radiation protective shield for vacuum and protective atmosphere furnaces that is comprised at least of a porous ceramic and/or metallic material, which comprises, on a surface in the direction of the heat source, high thermal radiation-reflecting properties.
摘要:
The invention relates to the area of ceramics and to a ceramic flat membrane which is configured as a multi-channel element. The aim of the invention is to provide a ceramic flat membrane with a larger effective membrane surface. To this end, the inventive ceramic flat membrane consists of at least two layers of at least two sub-layers of different porosity, at least one of these layers having a non-planar geometry. The two layers are joined to each other with at least spot joins and integral joins. The invention also provides a method for producing a flat membrane of this type. According to this method, suspensions are produced from at least two ceramic powders of different particle size. Two sub-layers are formed from said suspensions, then dried and joined to form one layer. At least one layer which is embossed and sintered or unsintered is joined to a non-embossed, similarly embossed, differently embossed or differently structured, sintered or unsintered layer with at least spot joins and integral joins to form a flat membrane.
摘要:
The invention relates to the field of materials science and to a device for reducing pressure in cavities in media at higher temperatures, such as those devices which can be used for devices for hot-dip coating metal materials in the metal processing industry for example. The aim of the invention is to provide a device by means of which pressure can be reduced in the cavity of the hollow bodies in a reliable and controlled manner and simultaneously the penetration of the media can be delayed or completely prevented at the higher temperatures. This is achieved by a device for reducing pressure in hollow bodies in media at higher temperatures, wherein at least one opening to the cavity of the hollow body is provided in hollow body regions which are not used for the intended application, said opening being closed from the medium surrounding the hollow body by at least one component made of a gas-permeable metal or ceramic material.
摘要:
Die Erfindung bezieht sich auf das Gebiet der Keramik und betrifft reaktionsgefügte keramische Bauteile, die unter anderem in tribologisch und/oder chemisch beanspruchten Anwendungen zum Einsatz kommen. Aufgabe der vorliegenden Erfindung ist es, reaktionsgefügte keramische Bauteile anzugeben, die ein Material der Fügenaht aufweisen, welches im Wesentlichen gleiche oder annähernd ähnliche Eigenschaften, wie das Material der zu fügenden Bauelemente aufweisen. Gelöst wird die Aufgabe durch reaktionsgefügte keramische Bauteile, die aus mindestens zwei Bauelementen bestehen, die im Bereich ihrer zu fügenden Oberflächen jeweils stoffschlüssig mit einem dichten Material der Fügenaht verbunden sind, welches aus mindestens 30 Vol.-% Siliciumcarbid und mindestens 8 Vol.-% Silicium besteht, und mindestens eines der Bauelemente mindestens einen höchstens teilweise mit Silicium und/oder einer Siliciumlegierung gefüllten Hohlraum aufweist, der an das Material der Fügenaht grenzt oder das Silicium im Hohlraum ganz oder teilweise an das Material der Fügenaht grenzt.
摘要:
The invention relates to the field of mechanical engineering and concerns a thermal radiation shield for vacuum and protective atmosphere furnaces, which is used for effecting a thermal radiation shielding that is a good at possible. The aim of the invention consists in providing thermal radiation protective shields with a reduced weight while having an identical or lower effective emissivity. To this end, the invention provides a thermal radiation protective shield for vacuum and protective atmosphere furnaces that is comprised at least of a porous ceramic and/or metallic material, which comprises, on a surface in the direction of the heat source, high thermal radiation-reflecting properties.
摘要:
The invention relates to the field of materials science and to high-strength planar structures for the protection of vehicles and people. The aim of the invention is to provide high-strength planar structures which are characterized in that the planar structure is only destroyed in the immediate vicinity of an impact. This aim is achieved by a high-strength planar structure that consists of individual elements that give, applied to a backing material, the high-strength planar structure. The individual elements have the shape of regular pyramids and tetrahedrons or irregular pentahedrons and/or hexahedrons and/or the individual elements consist of combined and interlinked shapes (compound shapes) of regular pyramids and tetrahedrons or irregular pentahedrons and/or hexahedrons. The aim is also achieved by a method which is characterized in that individual elements and/or shapes (compound shapes) combined from such individual elements and interlinked are combined to give a planar structure and are non-positively linked with a backing material at least on one side.