114results about How to "Avoid seams" patented technology

A manufacturing method of a semiconductor device having metal gate includes providing a substrate having a first semiconductor device and a second semiconductor device formed thereon, the first semiconductor device having a first gate trench and the second semiconductor device having a second gate trench, forming a first work function metal layer in the first gate trench, forming a second work function metal layer in the first gate trench and the second gate trench, forming a first patterned mask layer exposing portions of the second work function metal layer in the first gate trench and the second gate trench, and performing an etching process to remove the exposed second work function metal layer.

The invention provides a continuous forming system for a laminated veneer lumber (LVL), which is a novel equipment invention in the field of wood processing in China, can replace similar imported equipment to improve the processing and utilizing efficiency and quality of fast-grow forest woods. The system comprises a belt conveyer, a mobile forming head and a forming belt conveyer, and is mainly used for continuous lengthening and forming of each veneer of the laminated veneer lumber. The continuous forming system has the advantages of realizing continuous lengthening and forming to the veneer, overcomes the defect that the traditional process requires manual forming, improves the processing efficiency of forming, and reduces the manual cost of forming; in the forming process, the veneer can be accurately positioned and lengthened, and the joint of each veneer is regularly separated, so as to ensure that higher quality and strength of the laminated veneer lumber after forming to accord with the requirement of international laminated veneer lumber quality standard; and continuously lengthening and forming avoids material waste caused by multiple times of trimming of the laminated veneer lumber to improve the material utilization of the veneer.

A control method for panoramically aerial camera photographing signals belongs to the aerial camera measuring and imaging technology control field. According to velocity-height ratio, index overlapping coefficient, target slant angle and roll angle of an airplane at the current moment, a cameral controller figures out the scanning initial position, the scanning beginning position, the scanning ending position, the photographing time t photographing and the photographing period T of a lens cone which serve as working parameters to be sent into a lens cone system. The lens cone system controls timing sequence sending position/ speed signals and photographing pulse signals at the scanning initial position according to photographing signals. Finally, after receiving the position/speed signals and the photographing pulse signals sent by the lens cone system, a reflector conducts image motion compensation, a focusing system automatically focus, and a roll system conducts roll compensation; therefore, all systems finish the consistency of the functional timing sequence in the he photographing time and the requirement of the camera meeting the index overlapping coefficient is guaranteed.

The embodiment of the invention provides a spherical box bottom circumferential seam welding method for a 5M-grade thin wall storage box. The large-diameter storage box spherical box bottom circumferential seam welding quality is improved and the stability of the inner welding quality is ensured. The spherical box bottom circumferential seam welding method comprises the following steps: carrying out direct-current positioning welding on a connector points of each section of a circular ring and a circumferential seam, and a crossed point of the central line of each section and the circumferential seam; carrying out full positioning welding on the circumferential seam by using direct-current small current; carrying out suspended direct-current backing welding on the circumferential seam subjected to the full positioning welding; and carrying out cosmetic welding on a welding seam formed by adopting alternating-current large current, filling welding wires and carrying out the backing welding.

The invention discloses a conical pipe continuous cold-pressing forming roller die. The roller die comprises a pair of roller die bodies which are the same in structure, wherein the excircles of the roller die bodies are arranged in a tangent mode, an effective cold pressing region of a whole circular die opening is formed at the tangent point after the two roller die bodies are matched, and the diameter of the formed whole circular die opening is gradually increased or decreased along with the reverse synchronous rotation of the pair of roller die bodies. The roller die has the advantages ofbeing capable of being used for forming conical pipes with various sizes theoretically, wide in application range, long in service life of the roller die, and low in cost of the subsequent service andmaintenance, moreover, the produced conical pipe is seamless, continuous and uniform in wall thickness.

The invention provides a plate type ballastless track self-compacting concrete additive. By means of the plate type ballastless track self-compacting concrete additive, the segregation prevention capacity of self-compacting concrete can be improved, the shrinkage of the concrete can be reduced, and industrial waste or by-products can be utilized to the maximum extent. The plate type ballastless track self-compacting concrete additive is composed of, by weight, 100 parts of sulfur-fixed ash, 20 parts to 50 parts of coal ash, 10 parts to 30 parts of silica fume, 10 parts to 20 parts of slag powder, 0.5 part to 1 part of water reducing agents and 0.1 part to 0.5 part of triisopropanolamine. The plate type ballastless track self-compacting concrete additive accounting for 10wt% to 25wt% of cement is mixed into the self-compacting concrete.

The invention relates to a dual-core super-pressure pump with a spare supercharger. The dual-core super-pressure pump with the spare supercharger comprises a first supercharger, a second supercharger,a first hydraulic control valve, a second hydraulic control valve, a hydraulic switching valve and a water circuit switching valve. An opening A pipeline of the hydraulic switching valve is connectedto one end of the first hydraulic control valve, and the other end pipeline of the first hydraulic control valve is connected with a hydraulic opening of the first supercharger. A water outlet pipeline of the first supercharger is connected with an opening A of the water circuit switching valve, and an outlet pipeline of the water circuit switching valve is connected with an inlet of an energy accumulator. An opening B pipeline of the hydraulic switching valve is connected with the one end of the second hydraulic control valve, and the other end pipeline of the second hydraulic control valveis connected with a hydraulic opening of the second supercharger. A water outlet pipeline of the second supercharger is connected to an opening B of the water circuit switching valve. When one of theturbochargers is detected to be in trouble, a hydraulic circuit valve and a water circuit valve operate simultaneously, and the hydraulic circuit and the water circuit are switched to another turbocharger simultaneously. At the same time, the hydraulic circuit and the water circuit of the fault turbocharger are shut down for maintenance or replacement, and the use is convenient.

The invention discloses a wooden floor processing method, which comprises the following steps: manufacturing a blank board for a wooden floor at first, sanding the blank board, priming, then manufacturing a tongue-and-groove board for the side face of the wooden floor, and finally applying finishing paint. The method for manufacturing the wooden floor eliminates the residual paint on the side face of the wooden floor, thereby reducing gaps between installed floors, preventing accumulation of dust and breeding of bacteria, and ensuring that the floor surface has no scratch and the paint surface is smooth, dustless and beautiful. The invention is suitable for processing of solid wooden floors, solid wooden composite floors and bamboo floors.

The invention discloses a video fusion algorithm based on a dynamic optimal suture line and an improved fade-in and fade-out method, and belongs to the technical field of video information processing. The method comprises the steps of: acquiring a real-time video stream with an overlapping area through a multi-view camera system; extracting feature points of the overlapped region, performing rough matching and purification on the feature points, and calculating an internal reference matrix and a rotation matrix of each camera by combining a beam adjustment method; performing spherical projection on images between different visual angles and twisting the images to the same reference plane, and then splicing video images by adopting an optimal suture line algorithm, aiming at the situation that a moving object passes through an image overlapping area to generate double images and blurring; adopting an optimal suture line dynamic updating algorithm to avoid ghosting and blurring phenomena generated when a moving object penetrates through a suture line; and obtaining a wide-view-field and high-resolution panoramic spliced video with a good visual effect by using an improved fade-in and fade-out fusion algorithm. The steps are simple, and the spliced image with a good visual effect can be quickly obtained.

The invention relates to a preparation method of a rotary-screen plain-colored high-gram-weight single-layer raising blanket. Suitable raw materials are selected and woven to obtain a grey cloth, thenslitting and pre-shaping are conducted, and pre-treatment is conducted; in the pre-treatment process, after the grey cloth is subjected to pre-drying, brushing, luster finishing and hot shearing, printing and dyeing parameters are adjusted according to the fact that the net gram weight of the product is high, rotary screen printing and dyeing equipment is adopted, an empty rotary net is utilizedas a color paste adding net and a permeation net, a permeation device is additionally arranged for printing and dyeing, the printing and dyeing effect is ensured, a drying and steaming integrated machine is adopted for color fixation, the color fixation effect is ensured, and the efficiency is improved; then the front and reverse sides of a semi-finished single-layer blanket are sequentially subjected to brushing, luster finishing, hot shearing, reverse side raising, brushing, and hot shearing again, and then cloth cutting and edge covering are conducted to obtain the finished product. The preparation method is reasonable in process and high in efficiency, and has the good printing and dyeing effect and high production and application value.

A manufacturing method of a display apparatus includes mounting a plurality of inorganic light emitting diodes on a substrate, forming a black molding layer having a low refractive index and configured to surround the plurality of inorganic light emitting diodes such that front light emitting surfaces of the plurality of inorganic light emitting diodes that are directed to a front side of the display apparatus are exposed, and assembling a plurality of unit modules each comprising the substrate, the plurality of inorganic light emitting diode, and the black molding layer to be adjacent to each other.

A semi-automatic plate-feeding machine is characterized by comprising a plate-feeding variable-frequency and variable-speed motor (1), transmission gears (2), chain wheels (4), a chain (5), plate pushing mechanisms (6) and rolling wheels (7). A plurality of rows of rolling wheels (7) are arranged in the semi-automatic plate-feeding machine, the corresponding plate pushing mechanisms (6) are arranged on the outer side of every row of rolling wheels (7), a plurality of plate pushing mechanisms (6) are arranged on the chain (5), the upper end and the lower end of the chain (5) are respectively provided with one chain wheel (4), and the chain wheels (4) are connected with the plate-feeding variable-frequency and variable-speed motor (1) through the transmission gears (2). By adopting the semi-automatic plate-feeding machine, labor intensity of operating workers and complexity in the operation process are reduced, easiness in malposition, joint opening, folding and face dropping and the like of a surface plate layer of plate blank are avoided, the semi-automatic plate-feeding machine is small in installing occupied space, less in investment and low in energy consumption and reduces production running cost.

The invention discloses a floor board mounting assembly. A floor board inlaid groove is formed in the front face of the assembly, and protruding elastic components are arranged on the two sides of the inner wall of the floor board inlaid groove; the distance between the two sides of an inner cavity of the floor board inlaid groove is slightly larger than the width of a floor board, and the distance between the elastic components on the two sides of the inner cavity of the floor board inlaid groove is smaller than the width of the floor board; and the two ends of the floor board inlaid groove are further connected with end covers respectively. The lower portion of one side and the lower portion of one end of the assembly are each provided with a tenon, and the lower portion of the other side and the lower portion of the other end of the assembly are each provided with a mortise matched with the corresponding tenon. The floor board is mounted in the floor board inlaid groove in the assembly, and the elastic components on the two sides of the inner wall of the inlaid groove are used for absorbing expansion and shrinkage, in the width direction, of the floor board; warping and joint opening between floor boards are avoided; it is ensured that the overall appearance of the floor boards is not affected by changes of the temperature and the humidity of the natural environment; joggling between assemblies and dismounting and mounting of the floor boards are convenient; and the assembly is not prone to damage, and can be repeatedly used; and natural resources are protected.