Abstract: Disclosed are an unblocking apparatus for a furnace discharging pipe and a use method. The unblocking apparatus includes a rail, a rail car that may move along the rail, an unblocking drive mechanism arranged on the rail car, a heat-unblocking component, a cold-unblocking component, and a material receiving component that is used to receive a blocking material in the discharging pipe, and a drive end of the unblocking drive mechanism is detachably connected with one end of the heat-unblocking component and the cold-unblocking component respectively. The present application effectively handles different blockage situations of the furnace discharging pipe by connecting the unblocking drive mechanism with an unblocking rod capable of heat-unblocking and a drilling rod capable of cold-unblocking, thereby two modes of heat-unblocking and cold-unblocking are performed on the furnace discharging pipe; and the discharging pipe may be unblocked by a remote operation.

Abstract: The present invention discloses a glass with high refractive index for fiber optic imaging elements with medium-expansion and fabrication method therefor, the glass comprising the following components in percentage by weight: SiO2 5-9%, Al2O3 0-1%, B2O3 23-28%, CaO 0-3%, BaO 6-12%, La2O3 30-34%, Nb2O5 4-8%, Ta2O5 0-1%, Y2O3 0-1%, ZnO 4-9%, TiO2 4-8%, ZrO2 4-6%, SnO2 0-1%. The present invention further provides a fabrication method for the glass with a high refractive index, comprising: putting raw materials quartz sand, aluminum hydroxide, boric acid or boric anhydride, calcium carbonate, barium carbonate or barium nitrate, lanthanum oxide, niobium oxide, tantalum oxide, yttrium oxide, zinc oxide, titanium dioxide, zirconium oxide and stannic oxide, etc. into a platinum crucible according to the requirement of dosing, melting at a high temperature, cooling and fining, leaking and casting to form a glass rod, and then annealing, cooling and chilling the molded glass rod.

Abstract: A fiber optic imaging element includes medium-expansion and a fabrication method including: (1) matching a core glass rod with a cladding glass tube to perform mono fiber drawing; (2) arranging the mono fibers into a mono fiber bundle rod, and then drawing the mono fiber bundle rod into a multi fiber; (3) arranging the multi fiber into a multi fiber bundle rod, and then drawing the multi fiber bundle rod into a multi-multi fiber; (4) cutting the multi-multi fiber, and then arranging the multi-multi fiber into a fiber assembly buddle, then putting the fiber assembly buddle into a mold of heat press fusion process, and performing the heat press fusion process to prepare a block of the fiber optic imaging element with medium-expansion; and (5) edged rounding, cutting and slicing, face grinding and polishing the prepared medium-expansion block into a billet.

Abstract: Provided is an apparatus for preparing a building structure with 3D printing, comprising: a 3D printing device (1), having a storage chamber (11) and a printing head (12) connected to the storage chamber (11) and being movable relative to a base frame; and a reinforcing device, movably disposed relative to the base frame, and having a driving mechanism (3) for driving short rebars or short ribs to perform an insertion movement in a direction intersected with a stacking direction of a cement-based slurry layer; the driving mechanism inserts the short rebars or the short ribs into an interlayer interface spanning at least two adjacent cement-based slurry layers printed by the 3D printing device (1). Also provided a method for preparing a building structure with 3D printing.

Abstract: Provided is an apparatus for preparing a building structure with 3D printing, comprising: a 3D printing device (1), having a storage chamber (11) and a printing head (12) connected to the storage chamber (11) and being movable relative to a base frame; and a reinforcing device, movably disposed relative to the base frame, and having a driving mechanism (3) for driving short rebars or short ribs to perform an insertion movement in a direction intersected with a stacking direction of a cement-based slurry layer; the driving mechanism inserts the short rebars or the short ribs into an interlayer interface spanning at least two adjacent cement-based slurry layers printed by the 3D printing device (1). Also provided a method for preparing a building structure with 3D printing.

Abstract: The invention relates to a solar selective absorbing coating and a preparation method thereof. The solar selective absorbing coating comprises a substrate, an infrared reflective layer, an absorbing layer and an antireflective layer in sequence from bottom to surface. The absorbing layer consists of a first sublayer, a second sublayer and a third sublayer. The first sublayer and the second sublayer contain metal nitride, and the third sublayer is metal oxynitride. The first sublayer is in contact with the infrared reflective layer, and the third sublayer is in contact with the antireflective layer. The preparation method comprises: depositing an infrared reflective layer on a substrate; depositing an absorbing layer on the infrared reflective layer; and depositing the antireflective layer on the absorbing layer.

Abstract: A spectrally selective solar absorbing coating includes a multilayer stack including, from the substrate to the air interface: substrate (1), infrared reflective layer (2), barrier layer (3), composite absorbing layer (4) consisting of metal absorbing sublayer (4.1), metal nitride absorbing sublayer (4.2), and metal oxynitride absorbing sublayer (4.3), and antireflective layer (5). Therefore, the solar absorbing coating has good high and low temperature cycle stability and superior spectrum selectivity, with a steep transition zone between solar absorption and infrared reflection zones. It has a relatively high absorptance ?>95%, and a low thermal emissivity ? ?4%, PC (performance criterion) =?0.3. The solar absorbing multilayer stack can be obtained by reactively magnetron sputtering the metal target in argon or other inert gas with some amounts of gas containing oxygen or nitrogen or their combination.

Abstract: Provided is a windshield for a high-speed locomotive and preparation method thereof. The windshield comprises an anti-reflection film layer; a first chemical tempering glass layer coated with the anti-reflection film layer on a first side thereof; at least one second chemical tempering glass layer located on a second side of the first chemical tempering glass layer; the second chemical tempering glass layer being bonded together with the first chemical tempering glass layer via a layer of an adhesive film, and adjacent second chemical tempering glass layers also being bonded together via a layer of the adhesive film; an anti-splash film layer, located on an outer side of the outermost second chemical tempering glass layer and bonded together with the outermost second chemical tempering glass layer via a layer of the adhesive film; and a first electric heating element disposed inside the adhesive film layer in contact with the first chemical tempering glass layer.

Abstract: The invention relates to a solar selective absorbing coating and a preparation method thereof. The solar selective absorbing coating comprises a substrate, an infrared reflective layer, an absorbing layer and an antireflective layer in sequence from bottom to surface. The absorbing layer consists of a first sublayer, a second sublayer and a third sublayer. The first sublayer and the second sublayer contain metal nitride, and the third sublayer is metal oxynitride. The first sublayer is in contact with the infrared reflective layer, and the third sublayer is in contact with the antireflective layer. The preparation method comprises: depositing an infrared reflective layer on a substrate; depositing an absorbing layer on the infrared reflective layer; and depositing the antireflective layer on the absorbing layer.

Abstract: Provided is a windshield for a high-speed locomotive and preparation method thereof. The windshield comprises an anti-reflection film layer; a first chemical tempering glass layer coated with the anti-reflection film layer on a first side thereof; at least one second chemical tempering glass layer located on a second side of the first chemical tempering glass layer; the second chemical tempering glass layer being bonded together with the first chemical tempering glass layer via a layer of an adhesive film, and adjacent second chemical tempering glass layers also being bonded together via a layer of the adhesive film; an anti-splash film layer, located on an outer side of the outermost second chemical tempering glass layer and bonded together with the outermost second chemical tempering glass layer via a layer of the adhesive film; and a first electric heating element disposed inside the adhesive film layer in contact with the first chemical tempering glass layer.

Abstract: A vacuum melting furnace for infrared glass, includes an upper furnace body and a lower furnace body that can be connected with each other or isolated from each other. Vacuum melting of the infrared glass is achieved in the upper furnace body wherein the influence of water in the environment is eliminated. The vacuum negative pressure environments can promote separation of hydroxyl in the structure, which achieves removing of hydroxyl in the glass, and then discharging of the molten infrared glass is conducted at atmospheric pressure in the lower furnace body. By using the vacuum melting furnace for infrared glass, infrared glass with good spectrum transmission performance can be obtained with improved property stability and optical homogeneity, which facilitates the preparation and molding of large sized and special-shaped infrared glass products.