44results about How to "Improve shape" patented technology

The invention belongs to the technical field of steel rail welding, particularly discloses a technological method for controlling 'white block' tissues in a bainite steel rail flash welding joint and aims to solve the problems that 'white blocks' in microstructures of a flash welding joint welded by an existing bainite steel rail flash welding technology are large in number and size. According to the technological method, in the process that steel rail flash butt welding equipment is adopted to weld a bainite steel rail, the flashing and flattening stage, the pulsation stage, the accelerated burning stage, the upsetting stage and the pressure maintaining stage are controlled in sequence. The technological method is adopted to perform corresponding control in the bainite steel rail flash welding process, the number of 'white block' tissues near a weld joint can be lowered to the minimum, the sizes of the 'white block' tissues are reduced, the appearance of the steel rail is improved, therefore welding quality is stable, the mechanical property of the welding joint is guaranteed, the service performance of the bainite steel rail flash welding joint is improved, and safety of railway operation is guaranteed.

A mounting plate has an opening provided for bonding a solid-state imaging device thereto. The opening of the mounting plate comprises a first edge portion and a second edge portion. The first edge portion corresponds to a first side of part of the contour of a light receiving area of the solid-state imaging device. The second edge portion corresponds to a second side of part of the contour. The first and second edge portions function as reference lines for positioning the solid-state imaging device over said opening.

The invention discloses a method for evaluating microcrack initiation of magnesium alloy. The method includes the following steps that an in-situ tension method is adopted for acquiring the data of an in-situ scanning electron microscope (SEM) and the data of in-situ electron back scattering diffraction (EBSD); according to the data of the in-situ SEM and the data of the in-situ EBSD, the eulerian angles representing grain orientation information are acquired; in accordance with the eulerian angles, the crack initiation parameter F1 is calculated, and the possible microcrack initiation position is predicted. According to the method for evaluating the microcrack initiation of the magnesium alloy, the in-situ EBSD method is adopted so that slipping and twinning information in grains and microcrack initiation in the uniaxial drawing process of the magnesium alloy can be observed dynamically; the correlation between microcrack initiation on the grain boundary and the orientation and stress direction of surrounding grains can be evaluated comprehensively through calculation of the crack initiation parameter F1; the nucleation and the happening position of microcracks can be accurately predicted through calculation of the F1 value, and it is of great significance to improve the plasticity of the magnesium alloy.

The invention discloses a hot-rolled steel plate and a preparation method thereof. The preparation method comprises the following steps of: roughly rolling, finely rolling, coiling, stacking-cooling and smoothly rolling a plate blank, wherein the initial stacking-cooling temperature is 450-750 DEG C, the end temperature is 0-100 DEG C, and the ductility during smooth rolling is 0.1-2 percent. The hot-rolled steel plate and the preparation method thereof have the benefits that the smoothness of the hot-rolled steel plate prepared by the preparation method is less than 2 mm / m, and the sickle camber is less than 2.5 mm / 10 m, so that the residual stress of the hot-rolled steel plate can be effectively reduced, and further, the plate shape can be effectively improved; meanwhile, with the adoption of the preparation method disclosed by the invention, a special heat treatment production line as well as a cover type annealing device or a burial pit and other production equipment are not needed, and the hot-rolled steel plate has the characteristics of simple process control, strong adaptability, energy conservation and emission reduction, short production period, low cost and the like.

The invention of roll changing tension controlling technology for 300 series stainless steel belongs to the field of heat-rolled steel control, which is controlled by the two-level computer. Its features are: the second-level computer completes sending the setting value, the coefficient of changing tension and the mark for distinction of different kinds of steel, the first computer completes the control of coiling changing tension to realize the automatic controlling production. The advantages are: 1. It resolves the allocation and release of hot strip coiling strip head and internal stress, 2. It can improve the shape of coiler, especially the head bad shape, 3. It solves the problem of over-current in coiler and saves the investment of equipment, 4. It also provides protection for improving the quality of 300-series cold-rolled stainless steel, and improves the problem of bad shape of head.

The invention discloses a control method for a cold rolling mill for improving surface quality of strip steel, which comprises the following steps: independently controlling a last stander X or controlling the last stander X and a previous stander X-1 at the same time; and before a shape of the strip steel changes, predicting changes of the roll force to carry out precompensation on a bending roll so as to reduce the generation of a serious dual-side long edge, optimize the shape of export strip steel of a rolling mill, improve a shape of a working roll, and eliminate compression roller marks of an outer ring of a steel coil on a coiling machine. In addition, the method does not produce influence on stable rolling of the rolling mill.

Disclosed is a fill film sheet for a cooling tower. The fill film sheet has a wave-shaped section which possesses a predetermined radius when measured in an air flowing direction. The fill film sheet is made of a rectangular plate-like material having a zigzagged section which possesses a predetermined width when measured in a water flowing direction. The fill film sheet is formed with zigzagged and chevron-patterned lifts each having a first leg segment which extends toward an air outlet and a second leg segment which extends from the first leg segment toward an air inlet when measured in a downward direction. The first leg segment has a length smaller than that of the second leg segment.

The invention belongs to the technical field of electrolytic copper foil production, and particularly relates to a polishing process for a cathode roller for electrolytic copper foil production. The process includes the steps that a polishing brush is adopted for directly polishing the cathode roller with a clean and dry surface, wherein the rotating speed of the polishing brush is 120-360 r / min,the polishing swing frequency is 15-80 times / min, and the electrolytic polishing current is 1.5-6.0 A. An existing polishing process mostly adopts a liquid medium such as pure water as the polishing solution, and the wet polishing process easily leads to generation of pinholes in electrolytic raw foil. By means the process, the surface of the cathode roller can be directly polished, which avoids the problem and simplifies the process; meanwhile, the surface morphology of the cathode roller can be effectively improved, ordered electrodeposition of copper crystals on the surface of the cathode roller is facilitated, and thus copper foil obtained after electrolysis shows excellent performance.

The invention discloses a preparation method for a Perovskite-MoS2 bulk heterojunction type perovskite solar cell. The preparation method specifically comprises the following steps that 1) a PEDOT:PSShole transport layer is prepared; 2) a MoS2 buffer layer is prepared; 3) a Perovskite-MoS2 bulk heterojunction photoactivation layer is prepared; 4) a PCBM electron transport layer is prepared; 5) aBphen hole blocking layer is prepared; and 6) evaporation preparation of an Ag electrode is carried out. According to the preparation method, the Perovskite-MoS2 bulk heterojunction structure is usedas the perovskite photoactivation layer, so that the morphology of the perovskite photoactivation layer can be improved, in addition, the energy level match of the perovskite photoactivation layer andthe PEDOT:PSS hole transport layer can be adjusted, meanwhile, MoS2 is used as the buffer layer, so that the extraction and transmission of holes by PEDOT:PSS can be effectively promoted, and therefore the performance of the perovskite solar cell can be improved to a great extent. The preparation method has the advantages of being simple to operate and low in cost, too high condition limitation is not needed in the preparation process, and a prepared solar cell device has good photoelectric performance.

A color cathode ray tube capable of improving the luminance attenuation characteristic and the explosion-proof characteristic through an improved shape of a panel is disclosed. In an equation F=Rdo / (Sd H 1.767), F>21, Tc / CFT≦1.35, and Rdi>(Ryi or Rxi) are satisfied, wherein Sd is a length of a diagonal effective picture of the panel, Rdo is a curvature radius of a diagonal outer surface, Ryo is a curvature radius of a vertical outer surface, Rxi, Ryi and Rdi are a horizontal, vertically and diagonal curvature radius, respectively, CFT is a thickness of a center portion, Tc is a thickness of a diagonal end of the effective surface, F is a planarizing rate of the outer curvature.

A plasma display apparatus comprises a plurality of upper electrodes formed on an upper substrate, a plurality of lower electrodes formed on a lower substrate facing the upper substrate and crossing the upper electrodes, and barrier ribs separating a plurality of discharge cells formed between the upper and lower substrates. The discharge cell is formed such that a horizontal width of at least one of an upper or lower portion thereof is smaller than that of a central portion thereof.

The invention discloses a method and a structure for improving luminous efficiency of a green light wavelength or longer wavelength InGaN quantum well. The method comprises the following steps of adopting a substrate with atomic steps, wherein a chamfer angle formed between the adjacent atomic steps on the substrate is greater than 0.2 degrees; forming a buffer layer on the atomic step surfaces; forming a high-temperature n type GaN layer on the buffer layer; and forming the InGaN quantum well on the high-temperature n type GaN layer. According to the method for improving the luminous efficiency of the InGaN quantum well by adopting the large-chamfer-angle substrate, an active region of the green light wavelength or longer wavelength InGaN quantum well is grown on the substrate with the chamfer angle greater than 0.2 degrees, so that atomic step flow growth of the green light wavelength or longer wavelength InGaN quantum well can be realized, the morphology can be improved, and the internal quantum efficiency of the InGaN quantum well can be improved. In addition, the InGaN quantum well prepared by the above method can be widely applied to a GaN-based green light wavelength or longer wavelength LED or a GaN-based green light wavelength or longer wavelength laser, and also can be widely applied to a multi-quantum-well solar cell.

Provided is a pneumatic radial tire for a light truck which is designed to improve the contact shape, to suppress the growth and strain of a belt edge portion due to the creep strain of a carcass layer, and to prevent the separation failure at the belt edge portion. The pneumatic radial tire of the present invention is one, in which a carcass layer is formed of organic fiber cords, the tire has a casing structure in which at least two belt layers are disposed on a radially outer side of the carcass layer, and an air pressure corresponding to the maximum load carrying capacity is in the range of 350 to 650 kPa, wherein a belt cover layer is disposed around an edge portion of the belt layer, the belt cover layer comprising an organic fiber cord wound around the tire in a circumferential direction of the tire, the organic fiber cord having an intermediate elongation of at most 5.5% under a load of 67 N.

A cooling apparatus for hot rolling is installed on a downstream side of a finishing mill of a continuous hot rolling mill, and cools a steel sheet rolled by the finishing mill while being conveyed. The cooling apparatus includes first pinch rolls which, during an interval when the steel sheet fed out from a final stand of the finishing mill moves from a position of the final stand to a position where a surface temperature of the steel sheet reaches 850° C. or less, pinch the steel sheet while applying tension of 3.9 MPa or greater.

A display apparatus includes: a display panel including a rounded corner and a black matrix formed in an edge portion of the display panel and configured to prevent patterns formed in the edge portion from being exposed externally to the display panel; a light guide plate configured to guide light to the display panel; light sources configured to radiate the light to the light guide plate; and a middle mold having a shape corresponding to the display panel, and configured to support the display panel and the light guide plate to be apart from each other, wherein the black matrix includes a first rounded corner portion having a first width greater than widths of other portions of the black matrix, and the middle mold includes a display panel support configured to support the display panel and including a second rounded corner portion having a second width greater than widths of other portions of the display panel support.

The invention belongs to the technical field of preparing functional fiber, and particularly relates to a preparation method of composite conductive fiber. According to the preparation method, activated graphene, a carboxylated carbon nanotube, a silver nanowire and silver quantum dots are used as conductive fillers; and the slices of polypropylene and polyethylene are used as base materials which are subjected to blending granulation and melt spinning to prepare the composite conductive fiber. The composite conductive fiber provided by the invention not only has very good mechanical properties, but also has excellent electrical conductivity; the tensile strength of single fiber is 8.0-10.0cN / dtex; and the conductivity of the fiber is 1,100-1,500S / m. The preparation method is simple in process, green and environmentally friendly, and is suitable for industrial production, and has a broad application prospect.

Disclosed herein is a temperature sensor assembly. The temperature sensor assembly comprises an element that is a sensing resistor, a pair of parallel lead wires connected to the element, a laminate configured to mechanically protect and surround the element and the lead wires, and lead wire drawn out parts extended and protruded from the lead wires to the outside of the laminate.

The invention is suitable for the technical field of lithium batteries and provides a 4.40V high-voltage lithium cobalt oxide material and a production method thereof. Surface coating modification iscarried out on a lithium cobalt oxide material by adopting large and small particle mixing and double-coating means; a layer of lithium-ion conductor material containing the elements, namely Ni, Mg, Al and Si can uniformly cover the surface of the lithium cobalt oxide material after sintering is completed; meanwhile, the shape and form of a coating layer are greatly improved through the introducedelement P; and the original structure of the lithium cobalt oxide material can be effectively prevented from being damaged in the charge-discharge process, so that the cycle performance of the battery is ensured. Compared with an existing coating method in the market, the method provided by the invention has the advantages that the compaction capacity and the cycle performance of the material aregreatly improved, and meanwhile, the method also plays a great improvement role in the shape and form of the surface of the material.

The invention discloses an airbag inflatable skin of a folding wing, which is used for upper and lower surface skins of the folding wing, and belongs to the field of aviation. The airbag inflatable skin of the folding wing covers an outer surface of the folding wing so as to form the wing outer surface skin, and under pulling of a wing supporting framework (1) and skin supporting ribs (3), foldingor unfolding can be achieved. The inflatable skin is characterized in that the wing skin between the skin supporting ribs (3) is a double-layer airbag inflatable skin, and the airbag inflatable skintaking the wing supporting framework (1) and the skin supporting ribs (3) as frameworks forms an outer surface skin of the wing so that better tightness and hardness are achieved.

The invention discloses an annealing method for a photo-anode of a perovskite solar cell, relates to the annealing method for the photo-anode of the perovskite solar cell, aims at solving the technical problems an existing annealing method for the photo-anode of the perovskite solar cell cannot well control the shape and form of a perovskite light absorbent, and is relatively multiple in defect states, excessive residues of reactants in crystal and the like. According to the annealing method, when the photo-anode of the perovskite solar cell is heated and annealed on a heating stage, a perovskite light absorbent layer of the photo-anode of the perovskite solar cell directly contacts the heating stage for annealing. The annealing method has the advantages that solvents and unreacted materials left in the crystal and on the surface can be effectively utilized in the annealing process of the perovskite light absorbent; and improvement of the shape and form of the perovskite crystal is promoted, so that partial residual reactants further react completely in the annealing process; the damage to the crystal caused by excessive solvents in a solvent-assisted annealing method is avoided; and the annealing method is applied to preparation of the perovskite solar cell.

The invention discloses a hot-rolled pickled plate for a refrigerator compressor shell and a production method thereof, and relates to the field of hot-rolled pickled household appliance plates. According to the hot-rolled pickled plate for the refrigerator compressor shell and the production method thereof, the hot-rolled pickled plate comprises the following main chemical components in percentage by weight: 0.035-0.060% of C, less than or equal to 0.030% of Si, 0.30-0.50% of Mn, less than or equal to 0.020% of P, less than or equal to 0.012% of S, 0.025-0.050% of Al, less than or equal to 0.0045% of N and the balance of Fe and inevitable impurity elements. After a casting blank is reheated by a heating furnace, the casting blank is rolled on a continuous hot continuous rolling mill and is sequentially subjected to rough rolling, finish rolling and laminar cooling, and then coiling to produce a qualified hot-rolled plate coil. The plate shape and transverse printing are improved through hot rolling flattening, and then a hot-rolled pickled plate finished product is obtained through pickling.

A manufacturing method includes: a dry mixing step of dry mixing a raw material by batch processing; a wet mixing step of adding liquid to a dry mixture obtained at the dry mixing step, the liquid including at least one type of water, surfactant, lubricant and plasticizer, while wet mixing; a kneading step of kneading a wet mixture obtained at the wet mixing step; and a forming step of extruding a kneaded mixture (forming raw material) obtained at the kneading step to make a ceramic formed body. In the kneading step, the liquid is further added during kneading of the wet mixture.

Disclosed are a sound absorbing and insulating material and a method for manufacturing the same. The sound absorbing and insulating material may be manufactured by impregnating a polyimide binder into a nonwoven fabric formed of a heat-resistant fiber. As such, the sound absorbing and insulating material may have superior sound-absorbing property, flame retardancy, heat resistance and heat resistance, thus being applicable to parts maintained at high temperatures of 300° C. as well as at room temperature and moldability due to the use of the polyimide binder.

An apparatus for producing a stabilizing base flame for a premix main burner flame in a burner assembly having a burner end, a first fuel line, a first fuel nozzle, a second fuel line, and a second fuel nozzle. The apparatus comprises a conduit having a first fuel line end in fluid communication with the first fuel line, a second fuel line end in fluid communication with the second fuel line, a valve in fluid communication with the conduit and a center fuel stabilization bluff body mounted in the burner end. The center fuel stabilization bluff body comprises a first ring, a second ring and a cylinder disposed between the first ring and the second ring.

The invention provides a liquid-solid fluidization shaping method for low-cost titanium powder for 3D printing, and belongs to the technical field of powder metallurgy and preparation. The method comprises the following steps: using hydrogenated dehydrogenated titanium powder as a raw material, adding deionized water and titanium powder to mix, and stirring the deionized water to make the titaniumpowder move in a fluid state in the deionized water at a fluidization speed of 3,000 rpm, wherein the liquid-solid fluidization time is 1.5-15 min. In the process of liquid-solid fluidization, irregular titanium powder collides and rubs against each other to achieve the purposes of removing irregular powder edges and improving the smoothness of the powder, so that the fluidity of the powder is improved, and the requirements of powder metallurgy processes such as 3D printing and injection molding are achieved. The method has the advantages of low cost, simple equipment and technology, high efficiency, controllable impurity content, and obvious improvement effect of powder liquidity.

The invention discloses a device and method for preparing graphene. The device comprises a base, wherein a reaction device is arranged at the top of the base, the reaction device comprises a first supporting rod, the first supporting rod is fixedly connected with the base, a first motor is arranged at the top of the first supporting rod, a first rotary shaft is arranged on one side of the first motor, an output shaft of the first motor is fixedly connected with the first rotary shaft, a reaction box is arranged on one side of the first rotary shaft, the first rotary shaft penetrates through the reaction box and extends into the reaction box, a spiral blade is arranged on the outer side of the first rotary shaft, and a stirring plate is arranged on one side of the spiral blade. By arrangingthe reaction device, the first motor drives the spiral blade to rotate reversely, so that a graphite raw material is evenly distributed in the reaction box, meanwhile, the graphite raw material is heated by a heater, the reaction efficiency is advantageously improved, the graphite raw material is dispersed through leaking holes in the surface of the spiral blade, and meanwhile the stirring platestirs the graphite raw material to a position above the reaction box.

The invention provides a manufacturing method of a fin field-effect transistor. Before a dielectric layer is etched back to form a shallow trench isolation structure among fins, removing the top one of two hard mask layers pre-formed on the upper surface of each fin, and forming a cover layer on the whole device surface. The cover layer allows shallow trench filler to be wider, the shape of the shallow trench filler is improved, the depth-width ratio of an etch-back window is reduced, and the surface flatness of the etched-back shallow trench isolation structure is improved; the residual hard mask layers keep side structures of the fins exposed, and finally device performance of the fin field-effect transistor is improved.

The invention discloses a preparation method of superfine spherical zirconium powder capable of realizing size grading. Based on a hydrogenation dehydrogenation principle, zirconium hydride powder is firstly prepared, temperature-controllable plasma is adopted to heat the zirconium hydride powder for dehydrogenation, the zirconium powder is crushed under the action of gas explosion, and meanwhile, the crushed zirconium powder is subjected to plasma spheroidizing treatment to prepare the spherical zirconium powder. The zirconium powder subjected to plasma dehydrogenation spheroidization is further dehydrogenated under the protection of high-temperature inert gas, the zirconium powder is graded by using the inert gas, and the graded zirconium powder is directly conveyed into a reaction container filled with a passivation reagent for in-situ passivation treatment, so that the passivated spherical zirconium powder with different particle sizes is obtained. The technical problems that the zirconium powder prepared by a hydrogenation dehydrogenation method is irregular in morphology, coarse in particle size, difficult to classify, easy to oxidize, long in technological process and the like are solved, and the preparation cost of the zirconium powder can be reduced.

A coupling structure of a vehicle body and a chassis frame may include: a vehicle body side sill section provided to the vehicle body of a vehicle; and a side member section provided to a chassis frame coupled to the vehicle body, coupled to the vehicle body side sill section, and having a battery module mounted thereto, wherein the side member section includes a side member body part, and a battery coupling part which is integrally formed with the side member body part, wherein the vehicle body side sill section includes a side sill body part which is seated on the upper surface of the side member body part, and a locking part which is integrally formed with the side sill body part.