12results about How to "Small size difference" patented technology

The invention mainly relates to the technical field of high-performance ceramic filler nano titanium dioxide, and discloses a preparation method of high-dispersion nano titanium dioxide, which comprises the following steps: slowly dropwise adding a pretreated titanium source into a mixed solvent to prepare a titanium source solution; the preparation method comprises the following steps: adding water and a mixed inhibitor into a reaction kettle, uniformly stirring, slowly dropwise adding the prepared titanium source solution into the reaction kettle, and continuously stirring in the dropwise adding process; cooling the product to room temperature, adding a dispersing agent, aging for a period of time, and slowly adding nano silicon dioxide sol; washing the aged product, and then carrying out vacuum drying treatment; and calcining the dried product at 300-350 DEG C for 1-1.5 hours, then heating to 480-550 DEG C, calcining for 2-2.5 hours, and controlling the heating rate to be 1.5-2 DEG C / min, thereby obtaining the nano titanium dioxide product with uniform granularity and high dispersity after calcining. According to the invention, through optimization of the preparation process, the particle size of the nano titanium dioxide is in a small range, and good particle size uniformity and dispersibility are still kept.

The application discloses a high-precision rolling and expanding method for an asymmetric outer double-groove machine case ring forging and a product. The method comprises the following steps: firstly, carrying out multi-pass special-shaped section rolling and expanding after rolling on a rectangular cross-section ring blank to obtain an asymmetric outer double-groove ring forging; and then carrying out afterheat expanding on the asymmetric outer double-groove ring forging after heat treatment to obtain a final ring forging. For the forming process of the asymmetric outer double-groove ring forging, the number of special-shaped section rolling, the number of expanding, the expanding amount of the afterheat expanding process, the expanding amount after each pass of special-shaped section rolling, and the outer diameter of the special-shaped section ring forging after each pass of special-shaped section rolling are designed and calculated in advance, so that the size difference of the axial two end faces of the final ring forging and the ovality are reduced. The rolling process of the asymmetric outer double-groove machine case ring forging is carried out in steps, the size end problem is eliminated, and the ovality of the final machine case ring forging can be ensured to be within 0.1% of the outer diameter size.

The invention provides silver cluster zeolite as well as a preparation method and application thereof, and belongs to the technical field of bactericides. The preparation method comprises the following steps: mixing a sodium hydroxide solution and sodium metaaluminate, dropwise adding silica sol, and then carrying out aging treatment to obtain an aged mixture; mixing silver nitrate, ammonia water and water to obtain a silver-ammonia solution; and dropwise adding the silver ammonia solution into the aged mixture, and carrying out microwave in-situ reaction to obtain the silver cluster zeolite. According to the method, seed crystals are synthesized in advance, and high-temperature rapid synthesis of ZSM-5 zeolite is carried out in a microwave in-situ reaction mode, so that the synthesis speed of zeolite is approximate to the generation speed of silver nanoparticles, the silver nanoparticles and a zeolite framework are synthesized synchronously, the size difference of the formed silver nanoparticles is small, and the particle size is uniform. And the silver nanoparticles are uniformly distributed in a framework of the zeolite.

The utility model discloses a cutting device for carbon foil production, which comprises a cutting device operating platform assembly, the upper surface of the cutting device operating platform assembly is fixedly connected with a limiting plate, the surface of the front end of the limiting plate is fixedly connected with a first motor, and an output shaft of the first motor is fixedly connected with a threaded output rod through a coupler. According to the device, an adjusting clamping rod is movably clamped to the inner ring of a mounting plate, and after a user screws the adjusting clamping rod, the adjusting clamping rod can move downwards, so that the user can use and press the carbon foil placed on the cutting device operation table assembly, the user further needs to open a telescopic rod, and then the carbon foil can be cut by the telescopic rod. In this way, a user can push the clamping block, the arranged clamping plate and the connecting plate, the user can conveniently and stably use, press and clamp the carbon foil placed on the cutting device operation table assembly through the limiting pressing plate fixedly connected to the bottom of the connecting plate, and the situation that manual pressing is unstable is reduced.

The present invention proposes a method for spatial division of thermal analysis grids based on chip packaging structures under advanced processes. According to the physical model of the chip packaging structure, the structural contour is extracted, and a grid generation algorithm is used to generate a shading grid, a through grid, and a tree grid. The shading grid is used to meet the basic grid density requirements and describe the contour of the packaging structure. The through grid is used to describe the contour of the complex heat source and boundary conditions inside the structure. The tree grid is used to adaptively encrypt the heat source and its surroundings. The combination of these three types of grids realizes the adaptation of the complex structure and complex heat source distribution inside the package. In the specific use scenario of "thermal analysis and chip packaging structure", the present invention has become a highly targeted adaptive grid division scheme, which supports thermal modeling of various advanced packaging structures and complex heat source distributions. Users can use this grid method without any threshold to obtain satisfactory results.

The utility model relates to the technical field of cement grinding mills, and discloses a blanking device for solid waste treatment. The discharging device for solid waste disposal comprises a supporting plate, a shell is installed in the supporting plate in an embedded mode, a limiting frame is installed on the upper portion of the shell in an embedded mode, a smashing roller is movably installed in the shell, and a gear set is movably installed in the left side of the shell. The crushing motor can drive the crushing rollers to rotate through the gear set, materials can be preliminarily crushed by the crushing rollers after passing through the position between the crushing rollers and fall into the bearing groove, and the materials are concentrated above the discharging valve through the bearing groove; materials above the discharging shaft are transferred to the position below the discharging shaft in the mode that the discharging motor drives the discharging shaft to rotate, the materials can enter the conveying pipe under the action of gravity, the size difference of the materials can be reduced through the mode, and the situation that the materials block the conveying structure is avoided.

The utility model relates to glass production waste recovery technical field discloses a long -life hollow glass production waste safety recovery device, including recovery box, recovery cavity and two fender, the recovery cavity inside upper side front and back both ends all are established and contain the groove, two the containing groove inside all are fixedly arranged with broken assembly, the recovery cavity inside lower side fixedly set up have the mill pressure subassembly, the broken assembly includes drive motor, two thread sleeves, two threaded rods, two metal head and two connecting sleeves, drive motor output fixedly set up have the connecting rod, the connecting rod whole body fixedly cover and set up have driving gear, two thread sleeves whole body all fixedly cover and set up have driven gear, the mill pressure subassembly includes four electric rotating shafts. In the utility model, improve the security in the waste material crushing process, reduce the personnel injury, and improve the uniformity and efficiency of glass waste material crushing.

The utility model relates to the technical field of relays, in particular to a plug terminal structure and a high-voltage direct-current relay, comprising a control panel, an auxiliary contact connecting plate, a first pin and a second pin, the control panel is vertically arranged, and the upper end of the control panel is provided with a first pad; the first end of the auxiliary contact connecting plate is electrically connected with an auxiliary contact, the second end of the auxiliary contact connecting plate extends to the position above the control panel and is provided with a second bonding pad and a via hole, and the via hole is insulated from the auxiliary contact connecting plate; the first contact pin penetrates through the via hole and then is welded with the first bonding pad, the second contact pin is welded with the second bonding pad, the first bonding pad is used for electrically connecting the first contact pin with the control panel, and the second bonding pad is used for electrically connecting the second contact pin with the auxiliary contact connecting plate; and the end part of the auxiliary contact connecting plate extends to the upper part of the control panel, so that a conventional connecting curved needle seat is replaced, the number of parts of the plugging terminal is reduced, and the production cost is reduced.

The application relates to a beating machine for corrugated paperboard production, which comprises a tank body with a chamber in the inside, an inner cylinder is arranged in the chamber, a plurality of through holes are formed in the inner cylinder, a pulping crushing chamber is arranged in the inside of the inner cylinder, and a buffer chamber for storing paper pulp is formed in the outside of the inner cylinder by the inner cylinder; two fly cutter rollers are arranged in the inside of the buffer chamber and rotate oppositely, a driving element is arranged above the tank body, and a circulating unit is further arranged on the tank body; the beating machine can make the paper pulp in the buffer chamber return to the crushing chamber for circulating crushing for multiple times through cooperation of the driving element, the fly cutter rollers and the circulating unit, different raw materials with different particle sizes continuously receive the cutting action of the fly cutter rollers in the multiple circulating processes, the size difference of the raw material particles is effectively reduced, and the uniformity of the paper pulp is remarkably improved.

According to the ore crusher, two crushing rollers are installed in a crushing box, two sliding plates are installed below the crushing rollers, the sliding plates are fixedly connected to the interior of the crushing box, crushing mechanisms are installed in the sliding plates, and the lower end of the crushing box is fixedly connected with a ranking plate. According to the ore crusher provided by the utility model, the crushing rollers and the grinding mechanism are arranged, so that ores can be crushed twice, the size difference of the ores after the crushing procedure is reduced, one crushing roller can be driven to rotate after the first motor is started, and rotation conduction is carried out through the belt; and the two crushing rollers can rotate in opposite directions to crush ores for the first time.

The present application belongs to the technical field of titanium alloy forging, and relates to a die forging method of a special-shaped titanium alloy nozzle shell. In view of the problems of low material utilization, low processing efficiency and damaged metal streamline in the prior art, the present application proposes to integrate the pre-forging and finish-forging dies into an integrated multi-cavity die, thereby simplifying the forging process. The specific steps include designing and processing the die, preheating the die, heating the bar and forging the pre-forging piece, transferring the pre-forging piece to the finish-forging die to forge the formed piece, and then performing surface treatment, heat treatment and machining. The present application can improve the material utilization, save the production cost, ensure the stable product performance, simplify the process flow, reduce the labor intensity and cost of workers, and has a wide application prospect.

The embodiment of the invention provides a driving method of a display panel and the display panel, the display panel is provided with a display area and a light-transmitting area, the display panel comprises data lines and a plurality of pixel circuits arranged in an array, and each column of pixel circuits is connected with one data line. The number of the pixel circuits connected with the data lines corresponding to the light-transmitting area is smaller than that of the pixel circuits correspondingly connected with the data lines corresponding to the display area, and the pixel circuits are located in the display area; the driving method comprises the steps that in a display period, preset data voltage is transmitted to at least part of column data lines corresponding to at least part of row scanning periods in a light-transmitting area; wherein at least part of the lines include the last line of pixels corresponding to the light-transmitting area, and the preset data voltage is non-black state voltage. According to the scheme, the problem that a bright line extending upwards is generated at the junction of the light-transmitting area and the display area is effectively solved, and the display effect is further improved.