59results about How to "Improve performance drop" patented technology

The invention provides method to make a soft-magnetic inductance iron core by Fe-Si-Al alloy powder, including the steps: smelting Fe-Si-Al alloy - roughly crushing the cast ingot - heat treating - finely crushing into powder - annealing - grain mixing - passivating - adding insulating, binder, and mould-release agent - die forming - heat treating -coating surface. Its character: the binder is an epoxy one; the tempering after die forming is preserving the heat of the formed alloy powder at least 30 min on the condition of 600-800 deg.C nitrogen gas, argon gas or vacuum.

The invention discloses a low-temperature lead-free solder alloy, containing larger than or equal to 30% of and smaller than or equal to 60% of Bi, larger than 0.001% of Si and smaller than or equal to 0.02% of Si, as well as microalloy elements (alterant), rare earth elements, antioxidant elements and the balance of Sn and inevitable impurities. The large crystal grains of a Bi phase in a traditional Sn-Bi alloy system and the problem of reliability of brittle rupture of a welding joint is caused by that Bi is segregated at a Cu/Cu3Sn interface to form a brittle Bi layer in a long-term service process of the traditional Sn-Bi alloy system are effectively improved, and the mechanical impact and falling resistance of the traditional Sn-Bi system alloy can be greatly improved.

The invention discloses a plastic weaving bag production process and relates to the field of packing materials. The process comprises five technological processes of raw material burdening, mixing, drawing, weaving, printing-cutting and sewing. In the process method, raw material proportions in the raw material burdening process are reasonable, the performances of all the raw materials are fully played, the combined performances are greatly improved, a filling master batch adopts nano-calcium carbonate, and the mechanical properties and stability of the materials are improved; by reasonably controlling the parameters such as temperature, time and retraction ratio in the drawing process, manufactured ribbon-like filaments are excellent in quality and good in mechanical properties without being easily broken, and massive electric energy is saved by adopting a cam-combined energy-saving winding machine for winding and molding; after all steps of the weaving process, yarns are uniformly arrayed with less crossing and twisting, and a cloth surface has no wrinkles and is more attractive and reasonable in density; by reasonably controlling the needle pitch in the sewing process, the sewing direction strength of a weaving bag is high and the weaving bag has good falling performance.

In this invention, it provides a method for forming a pattern, which is capable of improving position control after a drop, which was discharged from a drop discharge apparatus, was landed on a substrate. In addition, it provides a drop discharge apparatus which is capable of improving drop position accuracy after it was landed. Further, it provides a method for manufacturing a semiconductor device which uses the drop discharge apparatus of this invention.

This invention is characterized in that a drop which was discharged from a discharge part, or a substrate on which a drop is landed, is irradiated with a laser beam, and a landing position of a drop is controlled. By this invention, it is possible to form a pattern, without using a photolithography process.

The invention relates to the technical field of composite packaging and processing, and discloses a modified polyolefin composite film composition, a modified polyolefin composite film and a preparation method and application of the modified polyolefin composite film. The composition comprises a first layer of film material, a middle layer of film material and a third layer of film material, wherein the third layer of film material comprises a PE corona layer material, a barrier layer film material and a PE heat-seal layer material; wherein the first layer of film material and the middle layer of film material respectively contain one or more selected from C4-C8 polyethylene, unitary homo-polypropylene, binary co-polypropylene and ternary co-polypropylene; and the barrier layer film material contains an ethylene-vinyl alcohol copolymer and/or thermoplastic polyvinyl alcohol. The composite film has high barrier property, puncture resistance, pressure resistance and falling property.

The invention discloses a flexible structure-variable compressed air energy storage system with vortex machines, which is applied to a cold-thermo electric micro-grid system and provided with two electric heating connectors. The compressed air energy storage system comprises the vortex machines, clutches, air circuit valves, an air storage tank, a heat storage tank, a heat exchanger, a heat exchange pump, a permanent magnet synchronous motor and a bidirectional converter. The multiple vortex machines are optimized by the clutches and the air circuit valves to form multiple energy storage system structures which are optimally selected in combination with the air pressure of the air storage tank and the dispatching power of a micro-grid. To be specific, a series structure is determined according to the ratio of inner pressure to outer pressure of the vortex machines, and a parallel structure is determined according to the dispatching power of the micro-grid and the power of the energy storage system. According to the invention, energy generated by compression and expansion is recycled to the heat storage tank by the heat exchanger, and compression energy storage capacity is improved in combination with heat exchange between the heat exchange pump and a thermal loop of the micro-grid; the compression energy storage capacity and the short-time quickly changing fluctuating power adjusting capacity can be effectively improved, and the development of new energy industry and the optimizing and upgrading of the energy structures can be greatly promoted.

The invention discloses a multistage deep sea mixture pump with an axial force transmission structure. The pump comprises a pump case. Two ends of the pump case are fixedly provided with an inlet pumpcover and an outlet pump cover. The other end of the outlet pump cover is fixedly connected with an outlet connecting pipe. The outlet pump cover is coaxially provided with an outlet bearing pedestal. The other end of the inlet pump cover is fixedly connected with an inlet connecting pipe, a bearing box, and a motor. The inlet pump cover is coaxially provided with an inlet bearing pedestal. The bearing box is internally provided with a bearing box shaft. One end of the bearing box, far away from a motor, extends into the inlet connecting pipe. The pump case is internally provided with a pumpshaft. One end of the pump shaft extends into the inlet connecting pipe and is connected with the bearing box by a shaft, and the other end of the pump shaft is in the outlet bearing pedestal. A plurality of stages of static pressure expanders are uniformly sleeved on the pump shaft along an axial direction in sequence. Ends of the pressure expanders, close to the inlet pump cover, are provided with closed impellers which are fixedly coupled with the pump shaft in a cooperated manner. A thrust collar is arranged between a first stage impeller and the inlet bearing pedestal. The pump is high inoperation efficiency under a working condition of high gas content, and the pump is easy to process and install.

The invention relates to a control system of a resistive segmented digital-to-analog converter. An MSB resistor string is divided into three groups, meanwhile, switches corresponding to the three groups of resistors are also divided into three groups, the group most sensitive to changes in the power supply voltage and temperature is controlled by a set of switches, i.e., the first switch group, the first switch group is controlled by a control voltage generated by a control signal bootstrap circuit, meanwhile a logic timing sequence generation circuit is introduced to ensure that the output signal of the digital-to-analog converter is continuous and to improve the performance degradation of the control signal bootstrap circuit due to power leakage at low frequency.

The present invention relates to a polyester resin for extrusion blow molded containers comprising a branched copolymer and fumed silica to improve the aged drop performance said branched copolyester is made from the reaction of purified terephthalic acid or its dimethyl ester, ethylene glycol, bifunctional diacid other than terephthalic acid, diol other than ethylene glycol, and multifunctional compound having a least 3 carboxyl groups, hydroxyl groups and/or ester forming groups thereof, said fumed silica has a particle size of 0.1 to 5 microns and is present at about 100 ppm to about 2,500 ppm based on the weight of said copolyester.

The invention discloses a design method of a multi-class center classification network model, and relates to the technical field of deep learning. According to the method, the problem that the model performance is reduced when a CNN + FC + Softmax framework processes classification data sets with high feature diversity is solved; the thought of a Gaussian mixture model is used for reference; the invention provides a method for setting a plurality of clustering centers for each classification. An optimal value selection mechanism is adopted; different pictures with large feature differences inthe same class can be gathered towards a feature center point most suitable for the pictures; by means of the design method, all the center points in the class can be driven to be separated and prevented from being bonded together, the richness trend of class characteristics is increased, meanwhile, the separability and the judgeability of the model are improved, the training speed is increased, the diversity characteristics of all the classes are reserved, and the problem that the performance of the model is reduced is solved.

The invention discloses a porous toning piece comprising micropores with the pore diameter of 0.3-2nm and the local peak of 0.4-2nm, mesoporous with the pore diameter of 2-30nm and local peak of 2-12nm, and macropores with the pore diameter of more than 700nm and the local peak of 0.8-500 microns; a silicon-aluminum atomic ratio in the porous toning piece is more than 120. The porous toning pieceprovided by the invention is significantly reduced in F0, and is simple in preparation technology, easy to control related parameter and convenient for industrial production in a large scale.

The invention discloses a preparation method of POM plastic particles used for an automobile fuel tank, which comprises the following step: adding the components according to mass part in a feed mixer, uniformly mixing to obtain a main material; then adding an auxiliary agent, uniformly mixing to obtain a mixture; adding in a twin-screw extruder, wherein the screw speed is 400-450r/min, after uniformly mixing, performing fusion extrusion to obtain a granular mixture under 260-300 DEG C; and cooling the granular mixture and granulating to obtain the product. The preparation method has the advantages of simple production technology, convenient operation and low cost. The fuel tank product prepared by the plastic particles has the advantages of uniform wall thickness, good intensity, impact resistance and excellent falling performance, and can be used for long-term application under outdoor scurviness environment (severe cold, intense heat of summer and long-term bumpiness shock).

The invention discloses a built-in type SD (Secure Digital) card falling preventing structure, which is arranged on a mobile telephone PCB (Printed Circuit Board), wherein an SD card groove is arranged on the PCB and is used for holding an SD card; a groove is arranged outside the SD card groove opening direction on the PCB; a movable post for abutting the SD card margin is arranged in the groove; a spring for facilitating the moving of the movable post along the vertical direction is sleeved on the movable post; a fixed seat for placing of the spring is arranged in the groove; and a holding cavity for holding the movable post is arranged at the bottom of the fixed seat. According to the invention, the movable post for abutting the SD card margin is arranged on the mobile telephone PCB, thus the falling of the SD card from the SD card groove is effectively prevented, the roller and falling performances of the mobile telephone is improved, and the abnormities that MP3 cannot play, shooting images cannot be saved, 300 kinds of files in the SD card cannot read and the like caused by damage on the reading/writing function of the SD card are prevented.

The invention discloses a sensing network control layer, a sensing network architecture and a construction method thereof. The sensing network control layer is arranged in a physical network sensing layer; all nodes of an Internet of Things sensing layer communicate with a physical network gateway through the sensing network control layer; the sensing network control layer comprises: a plurality of control nodes; the control nodes are all screened out from the nodes of the Internet of Things sensing layer; the links between the control nodes are all screened ou from the links of the Internetof Things sensing layer; the screening of the control nodes and the links satisfies the following conditions: the energy of each control node is greater than a set energy threshold; the moving speed of each control node is less than a set speed threshold; the total number of control nodes is less than a set number threshold; non control nodes of the Internet of Things sensing layer communicate with the physical network gateway through the control nodes; and if a link is added to the sensing network control layer, the link is connected, and the two nodes of the link are also in the sensing network control layer.

The invention discloses low-temperature soldering paste added with anti-falling particles. The low-temperature soldering paste is characterized in that organic matter particles and/or Mxene materials are added into lead-free soldering paste, so that the falling performance of the low-temperature soldering paste is improved, and the problems of low mechanical property, poor falling performance and the like caused by brittleness of a welding spot formed by the low-temperature Sn-Bi-based soldering paste after welding due to Bi aggregation are solved. On the basis of Sn-Bi soldering paste, the organic matter particles accounting for 2%-6% of the mass of soldering paste are added; the Mxene materials are added according to the amount of 0.2%-0.5% of the mass of the alloy solder; and after backflow, the Mxene materials are dispersed in the welding spot, part of the organic matter particles exist around the welding spot in a residual mode, and the anti-falling performance of the welding spot is improved through the Mxene materials and the organic matter particles in different mechanisms.

The invention provides a battery. The battery comprises a packaging bag, an electrode assembly, an adapter and a sealing element, wherein the electrode assembly is arranged in the packaging bag. The electrode assembly comprises a first pole piece and a first tab, and the first tab is electrically connected with the first pole piece. The first end of the adapter is connected with the first tab, and the second end of the adapter extends out of the packaging bag. And the sealing element is arranged between the adapter piece and the packaging bag. In the width direction of the battery, the width of the first tab is greater than or equal to that of the sealing element. According to the battery, the size relationship between the first tab and the sealing element is improved, so the sealing element can be effectively prevented from puncturing the pole piece in the falling process of the battery, and the falling performance of the battery is simply and effectively improved while the energy density and the production process of the battery are not influenced.