31results about How to "Guaranteed profile" patented technology

The present invention provides a memory and a method of forming the same. By making the width dimension of the first bit line located at the edge position in the bit line group larger than the width dimension of the second bit line arranged in the bit line group, when the bit line group is prepared, not only the morphology of the first bit line can be guaranteed, but also the shape of the first bit line can be guaranteed. In addition, under the blocking protection of the first bit line with a larger width, the topography accuracy of the second bit line can also be improved, which is beneficial to improve the device performance of the formed memory. Similarly, since the width dimension of the first contact portion located at the edge position among the plurality of node contact portions is larger than the width dimension of the second contact portion, the topography of the first contact portion can be guaranteed correspondingly, and the pattern of the second contact portion can be improved accordingly. accuracy, further improving the device performance of the formed memory.

The invention relates to the technical field of steel rolling, in particular to a method for raising the transverse thickness difference of high-grade non-oriented silicon steel, comprising: presetting a target crown value compensation value and a compensation position in a rolling plan sheet in a rolling model, wherein the compensation position is 1, 2, 3... N, and N is a positive integer. The actual value of the target crown value is calculated and input into the rolling model, and the rolling process of the steel block is controlled by the rolling model. The method for raising the transverse thickness difference of the high-grade non-oriented silicon steel provided by the embodiment of the invention improves the control level of the transverse thickness difference of the low-speed whileensuring the rolling stability.

The invention provides a method for manufacturing a semiconductor device. After depositing a side wall material layer on the surface of the first patterned layer, firstly form a second patterned layer corresponding to the first grid on the side wall material layer, and then use The second patterned layer is a mask, and the side wall material layer is etched to form a third patterned layer with the first gate pattern and the second gate pattern, because the third patterned layer has no serious sparse / dense load effect, so using the third patterned layer as a mask to etch the gate layer to form the first gate and the second gate have no etching difference, avoiding the sparse / dense loading effect of the gate and avoiding abnormalities The appearance of the edge second gate further ensures the performance of the manufactured semiconductor device.

The invention discloses a polytetrafluoroethylene tube ribbon coating preparation method and the polytetrafluoroethylene tube thereof. The modified coating material and the surface treatment of the tube are manufactured by adding an annular ribbon logo coating on the polytetrafluoroethylene tube. layer, which can improve the navigation and positioning of medical staff in endoscopic medical treatment.

The invention provides a method for co-curing L-shaped reinforcing ribs and C-shaped frame structure composite parts with high-strength soft tooling. The co-curing of C-frame composite structural parts with reinforced ribs ensures that key parameters such as profile, thickness, and L-shaped axis of the part meet the high-demand civil aviation manufacturing standards, and avoids material damage caused by multiple curing. 2. During the molding process, the pressure applied to the L-shaped vertical rib and the C frame is uniform and accurate, and the heating rate of each part of the part is kept consistent. The above two points prevent the part from appearing in the R angle area. Poor problem; 3. Combine the uncured preform of the L-shaped vertical rib and the C-shaped web through soft tooling, avoiding the internal stress generated by the combination after the components are cured, and solving the forced assembly under the original technology Out-of-tolerance profile and internal non-destructive defects caused by components.

The invention discloses an ultra-low specific speed centrifugal pump device. The ultra-low specific speed centrifugal pump device includes a spiral blade, a centrifugal impeller, a transmission shaft,and a shell body, wherein the centrifugal impeller sleeves the transmission shaft, and the spiral blade is arranged at an inlet of the centrifugal impeller; a spiral line runner is formed between thespiral blade and the centrifugal impeller; the shell body sleeves the centrifugal impeller on the outside and the transmission, and a cavity is formed between the shell body and the transmission shaft; an inlet and an outlet are formed in the shell body in the radial direction of the transmission shaft; the end surface of an inlet of the centrifugal impeller towards to the cavity; and the cavitycommunicates with an external fuel storage box through the inlet of shell body, and an outlet of the centrifugal impeller is connected with a burning chamber of an external engine. The ultra-low specific speed centrifugal pump device has the advantages of having small structural size, light weight, high lift, low specific speed, and unsymmetrical dimethylhydrazine corrosion resistance, good anti-cavitation performance, high efficiency and the like; and the ultra-low specific speed centrifugal pump device can be widely used in upper stage small thrust pumping-pressure liquid-propellant rocket engines, and can used in the field of energy power with small flow and high exit pressure at the same time.

The invention relates to the technical field of gear grinding machines, in particular to a precision band saw milling gear grinding machine. The precision band saw milling gear grinding machine comprises an emptying device, a machining device, a receiving device and a control device. The machining device is electrically connected with the control device and comprises a master frame and a master bracket, and the master bracket is connected with the master frame through an adjustable support device. The master bracket is provided with a feeding hydraulic clamp, a central hydraulic clamp and a discharging hydraulic clamp, a precision sliding seat is arranged between the central hydraulic clamp and the master bracket, and the precision sliding seat and the adjustable support device are in drive connection to a servo motor. A master head is arranged above the central hydraulic clamp, a milling cutter or grinding cutter is mounted on the master head, and a saw width adjusting device is arranged between the discharging hydraulic clamp and the central hydraulic clamp. The precision band saw milling gear grinding machine can machine a plurality of band saws simultaneously, deforms less easily, high in production efficiency and can effectively guarantee tooth profiles and sharp standard of the machined band saws.

The invention belongs to the field of laser surface texture forming, and in particular relates to a laser impact curved surface embossing and curved surface micro-topography repairing process. The present invention presses the TiNi alloy curved plate into a plane through low-temperature deformation, then manufactures micro-topography on its surface through laser shock imprinting technology, and then restores the flat plate to a curved plate through high temperature, and this recovery process will not affect the micro-topography A larger effect would only slightly reduce the overall height of the surface microtopography without affecting its uniformity. The micro-morphology repair process attached to this process can also efficiently restore the failed morphology of the metal.

The invention discloses a cooling and welding device for thin-walled sheet metal parts, comprising a base, a first positioning seat, a second positioning seat, a profile positioning cooling mechanism, an angular positioning mechanism, a pressing mechanism and a welding turntable for connecting Positioning mandrel, parts to be welded are installed between the first positioning seat and the second positioning seat, the parts to be welded include thin-walled sheet metal parts and blades, and the thin-walled sheet metal parts are installed in cooperation with the top surface of the blade; the first shaft of the blade The neck end is fixedly installed on the first positioning seat, the second journal end of the blade is fixedly installed on the second positioning seat, the profile positioning cooling mechanism is pressed against the thin-walled sheet metal part, and the angular positioning mechanism is pressed against the blade body of the blade In the middle of the side, the pressing mechanism is pressed against the two ends of the blade body of the blade; the welding device can reduce the transient thermal deformation of thin-walled sheet metal parts during the welding process, so as to ensure the profile of the sheet metal parts. .

The invention discloses a tooling manufacturing method for preventing composite material forming tooling from air leakage. The composite material forming tooling is used for forming composite material parts; the composite material forming tooling is assembled from a composite material laying mold and a supporting frame; The above-mentioned composite material laying mold is based on the transition mold, and is made of tooling prepreg materials of different thicknesses by hot pressing; and in the process of laying, the bead is laid on the R area and the corner area of ​​the transition mold, and the tooling The edge margin area of ​​the frame is paved with tooling prepreg, and a long strip of seam is laid in the area of ​​the butt joint. The photo frame paving avoids the expansion of edge defects to the inside caused by cutting and the splitting during bumping or demoulding during handling; the beading and seam patching strips further ensure the high temperature airtightness of the tooling. The tooling manufactured by the invention not only has good airtight performance, but also effectively reduces maintenance costs, ensures the molding quality and production cycle of composite parts, and has good practical and economic value.