204results about How to "Uniform transition" patented technology

The invention provides an efficient image rendering method based on modeling. With the method, a target image under free points view points can be generated. A light field model is adopted for recording surface information of a target; on the premise that that a three-dimensional grid model of the target and an appropriate amount of view point surrounding images of the target, through determining of a visible view point list of every vertex, the view points under which sampling is performed are determined; a triangular face ring of every vertex is selected as a sampling unit, virtual view points are generated with the triangulation method, and sampling information under the virtual view points is generated according to weight interpolations; sampling matrixes of all the vertexes are compressed with a matrix decomposition and compression method to facilitate transmission of the sampling information; in order to generate the target under the free view points, the three-dimensional grid model just needs to be projected to a screen coordinate system of new view points, and then a view under the new view points can be generated through reading of the sampling information. The method not only considers the problem of handling of a lapped seam phenomenon in texture mapping, but also reduces storage space for texture information and simplifies the rendering process.

A hatrack module with a moveable hatrack comprises a housing with a hatrack accommodation space, a hatrack with laterally arranged guide elements and optionally at least one passenger service unit, wherein each guide rail is arranged on one sidewall of the hatrack accommodation space, and wherein the guide elements of the hatrack can be made to engage the guide rails on the housing.

A harvester and processor for peanuts that comprises a drag type machine to be towed and actuated by a conventional tractor, which has various double assemblies to harvest lined up peanuts and process them through various steps of cleaning, up to the separation of the cleaned grains that are stored in an embedded tipper bucket, and to perform all this, said machine contains a chassis (1), that on its bottom side is supported by wheels (3), while on its top side is integrated with a plate body (4) forming a mono block structure for the assembling of all the embedded assemblies, starting with the frontal hitch pole (5) integrated with the transmission assembly (6) which is responsible for the actuation of various parts of the machine, specially two harvesting conveyor belts (8), anti-jamming receptive boxes (9), threshing cylinders (10), and in these cylinders starts the cleaning process together with the vibrating sieves (11) and the ventilation assembly (12), being that the cleaned fruits are delivered to a receptive chute (13), where they are collected by a bucket elevator (14) and dropped inside of a tipper bucket (15).

The invention relates to a structure of a building member and a material, particularly relates to a high-strength reinforced and functionally-graded concrete beam and belongs to the technical field of building materials. The high-strength reinforced and functionally-graded concrete beam is mainly characterized in that common concrete and a high-toughness fiber-enhanced cement-based composite material are combined in a layering manner; the common concrete is adopted for the pressed area of the concrete beam; the high-toughness fiber-enhanced cement-based composite material is cast in a pulled area in the whole longitudinal-length range of the beam or the specific beam section; and interface-area treatment is adopted for a combined area of the common concrete and the high-toughness fiber-enhanced cement-based composite material. The high-strength reinforced and functionally-graded concrete beam has the advantages that uniform transition of the material system on performance is realized, discontinuous weak areas on the interface are eliminated, the bearing capability of the structure is effectively improved and the completeness and the stability of the whole structure are ensured.

The invention relates to a technical method used for extruding-bending-integral forming of a magnesium alloy sectional material, pertaining to the technical field of plasticity processing. A set of three-wheel roll bending device is arranged near a discharge port of the original horizontal extruding machine, magnesium alloy ingot blanks are molded into the sectional material through hot extrusion, the sectional material is put into the roll bending mechanism directly before being cooled, bending moment is carried out to the sectional materials by the three roll wheels that are arranged on a same surface so as to achieve bending and molding, and the movement and position of the roll wheels are controlled to gain a bending angle and a bending radius that are required. The invention can realize the extrusion, bending and continuous molding of the magnesium alloy sectional material under the condition of only heating original ingot blanks, thereby having high production efficiency and low cost.

The invention discloses a superlubricity multilayer nano composite coating and a preparation method thereof. The coating comprises a Cr metal combination layer coated on a cutter matrix, a CrN transition layer, a gradient structure nano periodicity TiSin-TiAlN supporting layer, a nano composite TiAlSiCN functional layer and a DLC surface lubricating layer from inner to outer. The gradient structure nano periodicity TiSin-TiAlN supporting layer can greatly reduce the internal stress and improves combination intensity and toughness of a coating layer; and the DLC surface lubricating layer has low friction coefficient, can reduce abrasive wearing and increase the cutter life. The composite coating has combination force greater than 80N, internal stress less than 0.12Gpa, hardness higher than 40Pa, and friction coefficient as low as 0.2, and the cutting experiments show that the cutter life can be effectively increased. The cutter containing the coating is suitable for cutting process of an aluminum alloy and a high hardness steel material under high speed condition.

The invention provides a supersonic free vortex mixing layer wind tunnel. The wind tunnel comprises a transition section (1), a stabilizing section (2) and a spray pipe experimental section (3), wherein the transition section (1) is used for introducing air flow; the stabilizing section (2) is connected to the downstream side of the transition section (1) and is provided with a first separation plate (21) for separating the introduced air flow into two strands of air flow; the spray pipe experimental section (3) is connected to the downstream side of the stabilizing section (2) and comprises a spray pipe part (31) and a mixing experimental part (32); a transparent window is formed on the peripheral wall of the spray pipe experimental section (3); the spray pipe part (31) has a double free vortex spray pipe structure and is used for accelerating the two strands of air flow to form a free vortex state respectively; the mixing experimental part (32) is positioned on the downstream side of the spray pipe part (31) and is used for mixing the two strands of air flow in the free vortex state to form a free vortex mixing layer, so that velocity fields of the two strands of air flow at an inlet of the experimental part of the wind tunnel meet the requirement of supersonic free vortex distribution; therefore, an ideal supersonic free vortex mixing layer can be obtained in the wind tunnel.

The invention discloses a surface gradual change printing technology. The technology mainly comprises the following steps that firstly, printing ink is diluted, and printing ink of at least two different colors is taken to be diluted; secondly, screen inlet mixing is carried out, the diluted printing ink of the at least two different colors is guided in a blank screen printing plate and is linearly arranged according to the gradual change sequence, and a stacking layer of overlapped printing ink of two different colors is formed between adjacent printing ink of every two different colors; thirdly, stacking layer color matching is carried out, and complete mixing and color matching are carried out on the printing ink of the stacking layer through a silica gel scrapper till colors are mixed evenly; fourthly, one-time printing is carried out, a printed material is printed with a gradual change printing ink layer through the blank screen printing plate and the printing ink with even color matching on the blank screen printing plate. The non-screen-point gradual change silk-screen printing is adopted, the manufacturing procedure is simple, convenient and effective, and the product has very even transition and natural non-screen-point gradual change effects.

The invention relates to the technical field of repair of blades of a steam turbine, in particular to a vibrating cladding repair technology for damaged last-stage blades of the steam turbine. Firstly, the last-stage blades of the steam turbine are heated at the low temperature, surface defect parts or damaged parts are pre-cleaned and subjected to surface detection and analysis, then, proper technological parameters are selected according to detection results, and the surface defect parts or the damaged parts are subjected to laser cladding under assistance of vibrating stress relief treatment. After cladding, samples are subjected to vibrating stress relief treatment for 20-30 min, and the residual stress of components is further eliminated. By means of the method, the surface defect orthe damaged parts of the last-stage blades of the steam turbine can be effectively repaired, and meanwhile, defects of non-uniform structure and performance distribution and the like caused by non-uniform surface stress of clad layers are overcome.

The invention discloses a multi-legged friction-stir welding method for improving properties of a welding seam. After the welding seam is formed by stir welding by a front stirring head, the welding seam and a mother plate are rotated and squeezed by a back stirring head. The multi-legged stirring head can not only ensure smooth welding process, but also carry out rotation and squeeze to the welding seam, and smooth transition is realized between the welding seam and the mother plate so as to reduce stress concentration to the lowest or even zero. By adopting the multi-legged stirring head, smooth transition can be realized between the welding seam and the mother plate, thus eliminating the thickness difference which is peculiar to FSW.

A display mirror assembly for a vehicle is presented that includes a full display module and an electro-optic element that includes a first substantially transparent substrate having first and second surfaces disposed on opposite sides thereof. The second surface includes a first electrically conductive layer. A second substantially transparent substrate has third and fourth surfaces disposed on opposite sides thereof. The third surface includes a second electrically conductive layer. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic medium is disposed in the cavity. The electro-optic medium is variably transmissive such that the electro-optic medium is operable between generally clear and darkened states. A first electrical connection and a second electrical connection are positioned on the same side of the electro-optic element.

The invention discloses a complex free-form surface grid division method based on surface fitting and geodesic lines, belonging to the field of architectural grid division. This method first proposes a surface-to-surface intersection method based on NURBS to obtain the N×M point cloud of the complex free-form surface, and uses the N×M point cloud as the control point to construct the NURBS surface, and then divides the pruned NURBS surface with a given number of boundaries Or divide with a given length, connect multiple boundary segment points to form a geodesic grid, and optimize and smooth to obtain the final complex free-form surface grid. The grid division method provided by the present invention can obtain grids with smooth lines and basically the same size. Compared with the multi-surface grid division method, surface fitting and geodesic grids can be used to obtain grids with smooth lines and uniform transition , has a good architectural aesthetic effect.

The invention discloses a method for molding hard alloy functionally gradient materials. The method includes mixing additives with alloy materials to obtain mixtures; carrying out compound pressure molding on the obtained mixtures in compound die groups to obtain blanks; sintering the blanks to obtain the hard alloy functionally gradient materials. The compound die groups comprise outer-layer dies with high expansion coefficients, intermediate transition-layer die groups and inner-layer dies with low expansion coefficients. The method has the advantages that the large and multi-component hard alloy functionally gradient composite materials which are of complicated contour structures and are free of obvious interfaces can be manufactured by the aid of the method; the sintered molded functionally gradient materials are provided with gradient grain structures along the thickness directions of the sintered molded functionally gradient materials, the gradient grain structures are provided with the different components, have different grain sizes and are free of obvious interfaces, and accordingly the molded hard alloy materials are excellent in comprehensive mechanical performance with high hardness, abrasion resistance, strength and toughness.

The invention relates to the field of welding and in particular relates to an ultrasonic vibration assisted welding method. The method comprises the following steps: in a welding process of fusion welding, providing an ultrasonic vibration force through an ultrasonic excitation vibration device; introducing ultrasonic frequency stress wave into a welding fusion tank; finally, transmitting vibration to a welding part. With the adoption of the configuration, the quantity of crystal nucleuses can be effectively increased, the size of crystal grains is prevented from growing, dendritic crystals are crushed and a crystal shape is changed, so that condensed welding line metal crystal grains are thinned; gas, impurities and the like in the fusion tank are prompted to rapidly float up, and defects of air pores and slag adding are reduced; welding residual stress and welding deformation are reduced; components are more uniform so that a welding line metal structure is improved; a fusion region becomes narrow and is uniformly transited, and non-fusion defects are reduced; comprehensive mechanical properties of welding lines are improved through the effects above.

The application discloses a dental zirconia restoration material with uniform transition of strength and color, and a preparation method thereof. The preparation method includes the following steps: (1) pouring colored zirconia powder into a dry pressing mould in accordance with a sequence of the strength from high to low and the color from dark to light for each layer, and performing dry pressing; (2) performing isostatic cool pressing after the dry pressing; (3) performing pre-sintering after the isostatic cool pressing to obtain a greenware; and (4) performing CAD/CAM cutting on the greenware, and finally performing final sintering to obtain the dental zirconia restoration material. In the present application, the strength of a restoration can gradually increase from a cut end to the neck, the wear to adjacent teeth and jaw teeth is reduced, and long-bridge restoration can be realized due to the high strength of the neck.

The invention provides a stelmor air-cooled line controlled cooling process for improving the structure and performance of a spring steel 55SiCrA coil rod. The controlled cooling process includes the steps that the finish rolling temperature is 790-820 DEG C, the blast capacity of the front three draught fans is controlled to meet the requirement that under various specifications, the lowest temperature of the third draught fan is within 680-710 DEG C, and the cooling speed of the front two draught fans is controlled within 5-13 DEG C per second; the blast capacity of a fourth draught fan and a fifth draught fan is controlled to make the coil rod temperature rise by 10-50 DEG C; the blast capacity of a sixth draught fan and follow-up draught fans is controlled to make the cooling speed within 3 DEG C per second, after the coil rod temperature is within 670-700 DEG C, thermal insulation covers are closed, and all the thermal insulation covers are opened before the temperature range; the cooling speed in the each thermal insulation cover is controlled at 0.8-2.0 DEG C per second, the draught fans are closed, the final two thermal insulation covers are opened, and the temperature of the coil rod discharged from each thermal insulation cover is 580-630 DEG C. In the process, the 55SiCrA coil rod is uniform in structure and composed of pearlite and a small amount of ferrites, under the various specifications, the percentage of area reduction can reach 60 or above, the sorbitizing rate and the plasticity reach high standards, and the strength, the hardness and the like can meet the performance requirement.

The invention discloses a backlight module and a display device, the backlight module comprises a splicing lamp panel, the splicing lamp panel is formed by splicing a plurality of lamp panels, a gap is formed between every two adjacent lamp panels, the backlight module further comprises a diffusion plate, the diffusion plate is arranged at the position corresponding to the gap, and the diffusion plate is arranged in the position corresponding to the gap. The diffusion plate covers at least one row of light-emitting diodes on at least one lamp panel, and at least part of the light-emitting diodes on the lamp panel are not covered. The diffusion plate is arranged at the gap and covers the at least one row of light emitting diodes, close to the gap, in the at least one lamp panel, light on the lamp panel is uniformized into the diffusion plate, light transition between the gap and the lamp panel is smoother on the basis that light supplementing is conducted on the gap, and the light emitting efficiency is improved. And the manufacturing cost of the diffusion plate is lower, so that the production cost is saved.

The invention relates to a method for quenching No. 45 steel, comprising the following steps: 1) heating to 770-780 DEG C, and quenching with saline water at room temperature, wherein the concentration of the saline water is 5-10%; and 2) tempering at 500-540 DEG C. The method for quenching No. 45 steel has the characteristics of fewer processing procedures, energy conservation, low cost and less deformation, and is easy to operate.

The invention discloses an erbium and ytterbium containing aluminum alloy welding wire which is prepared from the following components in percentage by mass: 2-3.5 percent of Mg, 0.12-0.2 percent of Ti, 0.15-0.3 percent of Cr, 0.08-0.2 percent of Mn, 0.01-0.05 percent of Ce, 0.05-0.15 percent of Te, 0.01-0.1 percent of B, 0.05-0.2 percent of Er, 0.05-0.2 percent of Yb, 0.2-0.5 percent of Zr, 0.05-0.15 percent of Ge, 0.1-0.8 percent of Sn, 0.5-2.5 percent of Mo, 1-3 percent of W, 0.5-1.5 percent of V, 4-5.8 percent of Cu, smaller than or equal to 0.3 percent of Fe plus Si, smaller than or equal to 0.2 percent of Zn, smaller than or equal to 0.05 percent of single content of other purity elements, smaller than or equal to 0.15 percent of total content of other purity elements and the balance of Al.