Disclosed is a trolley sealing device for a flue gas circulation system of a sintering machine, including a cover body covering a top surface of a sintering machine trolley. A top end of the cover body is provided with communication assemblies, and the communication assemblies communicate an inner cavity of the cover body with an outside environment; two ends of the inner cavity of the cover body are fixedly connected with vertical adjusting sections respectively, and a sealing device is arranged between the vertical adjusting sections and two ends of the top surface of the sintering machine trolley; and the cover body includes a plurality of frameworks; the plurality of frameworks are arranged above the sintering machine trolley, the communication assemblies are arranged on the frameworks, and skins are fixedly connected with the frameworks; and thermal insulation layers are arranged outside the skins.

The present invention relates to a metal wiring, to be formed on a flexible substrate, including a sintered body of silver particles. The sintered body constituting the metal wiring has a volume resistivity of 20 μΩ.Math.cm or less, hardness of 0.38 GPa or less, and a Young's modulus of 7.0 GPa or less. A conductive sheet provided with the metal wiring can be produced by applying/calcinating, on a substrate, a metal paste containing, as a solid content, silver particles having prescribed particle size and particle size distribution, and further containing, as a conditioner, an ethyl cellulose having a number average molecular weight of 10,000 or more and 90,000 or less. The metal wiring of the present invention is excellent in bending resistance with change in electrical characteristics suppressed even through repetitive bending deformation.

A piece of flexible porous metal foil is a sheet made of porous metal material using solid solution alloy, face-centered cubic metal simple substance or body-centered cubic metal simple substance as matrix phase. The thickness of the sheet is 5 to 200 micrometers, the average aperture thereof is 0.05 to 100 micrometers, the porosity thereof is 15-70%, and the sheet is made by sintering a homogeneous film. The preparation method for the flexible porous metal foil comprises: (1) preparing thick turbid liquid with raw material powder forming the metal porous material by using dispersing agent and binding agent; (2) injecting the turbid liquid into a mold cavity of a film manufacturing fixture, and drying the turbid liquid to form a piece of homogeneous film; (3) putting the film into a sintering manufacturing fixture matching with the film in shape, then sintering the film, and taking the film out after sintering and obtaining the flexible porous metal foil. The flexible porous metal foil made by the above method can be used in many fields, and have ideal performance in flexible and chemical stability.

A material and method are disclosed such that the material can be used to form functional metal pieces by producing an easily sintered layered body of dried metal paste. On a microstructural level, when dried, the metal paste creates a matrix of porous metal scaffold particles with infiltrant metal particles, which are positioned interstitially in the porous scaffold's interstitial voids. For this material to realize mechanical and processing benefits, the infiltrant particles are chosen such that they pack in the porous scaffold piece in a manner which does not significantly degrade the packing of the scaffold particles and so that they can also infiltrate the porous scaffold on heating. The method of using this paste provides a technique deposition/removal process.

A method for producing a three-dimensional object by successive solidification of layers of a powder-type construction material that can be solidified using radiation. The method includes providing a laser system with a housing, a construction chamber, a coating device for applying construction material in layers, a radiation device for applying the applied layers of construction material with radiation, and a group structure on which the object and/or a support structure for the object is additively constructed; forming the support structure for supporting the three-dimensional object, by successive solidification of layers of the construction material; forming individual sub-objects that form a determined section of the three-dimensional object, by successive solidification of layers of the construction material, wherein one sub-object is formed on the support structure; forming joining regions between the sub-objects for joining the sub-objects by forming the three-dimensional object; removing the three-dimensional object from the support structure.

A processing device for a metal material, containing: an airtight container for housing a specimen thereinside; an oxygen pump for extracting oxygen molecules from a gas discharged from the airtight container; a circulation means for returning the gas into the airtight container; and a plasma generation means present inside the airtight container for converting the gas returned from the circulation means into plasma and exposing the specimen thereto.

An additive manufacturing machine for repairing a component includes a build platform that supports the component and a powder dispensing assembly for selectively depositing additive powder over the build platform. A powder seal assembly includes a powder support plate positioned above the build platform and defining an aperture for receiving the component without contacting the component. A clamping mechanism is movable relative to the powder support plate and defines a void for receiving a resilient sealing element around the aperture. An actuating mechanism, such as bolts or a linear actuator, moves the clamping mechanism toward the powder support plate to deform the resilient sealing element until the resilient sealing element contacts and forms a seal with the component.

An additive manufacturing plate (10) comprises a main body (32), this main body (32) taking the form of a panel, and the main body (32) comprising an upper face on which the components are manufactured directly. The additive manufacturing plate comprises a stiffener (12) that is independent of the main body (32) and secured to the lower face (34) of the main body, this stiffener (12) taking the form of a panel (36) and the panel (36) being hollowed out but only through a part of its thickness (E36). The stiffener (12) makes it possible to avoid excessive deformations of the additive manufacturing plate during the manufacturing process and is reusable.

A method for producing a molded body is proposed, comprising: applying a layer of particles and applying a binder and curing a molded body; and a device for producing a metallic or ceramic molded body, having a storage volume, which is configured for receiving a suspension of metallic or ceramic particles that are dispersed in a suspension fluid, a layer-forming application device, which is configured for removing an amount of suspension repeatedly from the storage volume and transferring it into a working volume and applying it there as a layer, a dehumidifying device, which is configured for dehumidifying the applied layer in the working volume, a binder application device, which is configured for applying a binder locally to the dehumidified layer in accordance with a layer model of the molded body to be produced, in such a way that particles in the dehumidified layer are adhesively bonded locally to one another and optionally in addition to particles of at least one layer lying under the dehumidified layer, and a demolding device, which is configured for demolding the molded body by detaching binder-free residual material from the particles bonded to another with the aid of the binder; and also a rapid prototyping method, comprising: producing a green body and sintering the green body.

A method for preserving the shape of an object during sintering includes filling at least one volume defined by a surface of the object with a plurality of balls, sintering the object together with the balls and separating the object from the balls post sintering. The balls have a diameter of 0.5 mm-12 mm.