39results about How to "Improve performance matching" patented technology

The present invention discloses a method for producing a gradient nanometer structure on the martensitic steel surface, and belongs to the technical field of metal material surface nanocrystallization. According to the method, a martensitic steel rotation member is treated by using a surface mechanical rolling processing technology (SMGT), the SMGT processing cutter hard ball capable of freely rolling performs high speed rolling and pressing on the martensitic steel rotation member surface, the martensitic steel surface to be treated is subjected to high speed plasticity deformation, and under the conditions of high strain, high strain rate and high strain gradient, the coarse grain structure on the surface layer is converted into the gradient structure sequentially comprising nano-grains, submicron grains and micro-scale grains. According to the present invention, the surface roughness Ra value of the martensitic steel being subjected to the SMGT surface nanocrystallization treatment is less than 0.30 [mu]m, and the surface property is significantly improved.

The invention discloses an organosilicon-modified alkyd resin paint composite and a preparation method thereof. The paint comprises the following components in parts by weight: 20-60 parts of organosilicon-modified alkyd resin, 15-35 parts of solvent, 15-40 parts of pigment and filler, 0.1-1 part of leveling agent, 1-5 parts of wetting dispersant, 0.5-2 parts of drier and 0.2-0.35 part of anti-skinning agent. The preparation method of the paint composite comprises the following steps: stirring, grinding and dispersing the solvent, the pigment and filler, the organosilicon-modified alkyd resin and the wetting dispersant; adding the leveling agent, the anti-skinning agent and the drier in abrasive; and dispersing at a low speed to obtain the paint composite. The paint composite has good comprehensive properties such as good adhesion, salt fog resistance, saline resistance and aging resistance, and is suitable for the anticorrosion of a steel structure.

The invention discloses a hexabasic high-entropy alloy material. The hexabasic high-entropy alloy material is prepared from, by atomic percent, 18.18%-22.22% of Co, 18.18%-22.22% of Cr, 9.1%-11.12% of Cu, 18.18%-22.22% of Fe, 18.18%-22.22% of Ni and 2.17%-18.18% of Ti, wherein the element Ti has the large atomic radius, and the severe lattice distortion effect of the element Ti can effectively enhance a solid solution phase. In addition, the element Ti has the small valence electron concentration and tends to form a compound phase, and therefore the precipitation enhancing function is achieved. An obtained hexabasic CoCrCu0.5FeNiTi0.5 high-entropy alloy has high strength and plasticity, wherein the yield strength is 850 MPa, the compressive strength reaches 1,650 MPa, and meanwhile the plasticity reaches 31.5%. The alloy has good strength and plasticity cooperation, and a preparation method is simple and reliable. The invention further discloses the preparation method of the hexabasic high-entropy alloy material.

The invention provides a content routing method and a device. The method comprises the steps of: identifying the type of a content resource according to a command required by the a content; and then, selecting a target server which provides the content resource from each high speed cache server according to the weighted value of each type of service performance parameters corresponding to the type of the content source and the difference of each high speed cache server corresponding to the same type of service performance parameters. The technical problem that in the prior art, the server performance required by a terminal is not matched with that of the target server and the efficiency of obtaining the content resource by the terminal is low are solved.

The invention relates to laser cladding repair equipment and method for irregular curved surfaces of Invar alloy molds. Aiming at unqualified or invalid products in the production, manufacturing and use processes of Invar alloy molds, the curved surfaces of the unqualified or invalid Invar alloy molds are repaired in combination with reverse engineering and a laser cladding technology, so that notonly is the production and manufacturing cost reduced, but also the service life of the molds is prolonged. The repair equipment comprises a 3D laser scanner, a robot with a coaxial powder feeding nozzle, a laser, a laser water cooler, an adjustable powder feeder, a monitor, a control system and the like. The repair method comprises the following steps: (1) performing 3D scanning to obtain a to-be-restored region model; (2) designing a cladding scheme; (3) carrying out a cladding experiment for repairing; and (4) checking the size of the repaired part.

The invention discloses a bipolar electrode of a resectoscope. The bipolar electrode comprises two metal sleeves, an insulating sleeve, a dual-core wire, a semi-circular positive electrode, a loop electrode, two insulating tubes and binding posts, wherein the front section parts of the two metal sleeves are forked and spaced, the rear section parts fit each other in parallel, and the insulating sleeve is arranged on the peripheries of the rear section parts; the two ends of the two metal sleeves are fixedly connected with the two ends of the semi-circular positive electrode through the two insulating tubes respectively, and the binding posts are arranged at the tail ends; one wire of the dual-core wire is electrically connected with the metal sleeve, and the other wire penetrates into the metal sleeve and electrically connected with the positive electrode at the front end; the loop electrode comprises two metal tubes which are arranged on the peripheries of the front parts of the two metal sleeves respectively and electrically connected with the metal sleeves; and the rear section parts of the two metal tubes of the loop electrode and the front section parts of the metal sleeves are externally wrapped by an insulating layer sleeve. The bipolar electrode disclosed by the invention is safe and reliable and realizes a better operation effect.

A Co3W3C fishbone-like hard phase-reinforced Fe-based wear-resistant coating and the preparation thereof, which belongs to the field of a wear-resistant coating on the surface of a material and a preparation method thereof. The wear-resistant coating comprises: 1.89-3.77% of C, 5.4-11.7% of Cr, 3.3-7.15% of Ni, 28.81-57.83% of W, 4.2-8.4% of Co, 0.03-0.065% of Si and the balance of Fe. The preparation process of the wear-resistant coating comprises: (1) before plasma cladding, pretreating a matrix; (2) pretreating an iron-based alloy powder; and (3) adjusting the process parameters of plasma cladding, preparing a cladding layer with a predetermined width and a predetermined thickness, and naturally cooling same down in air. The wear-resistant coating is simple in process; the prepared cladding layer has a strong metallurgical bonding property with the matrix structure, so that the best performance matching between the ceramic phase of the cladding layer and the matrix can be achieved; a fishbone-like hard phase Co3W3C has a very high hardness value and plays the role of a framework in the frictional process to reduce the wear of the matrix structure, thereby achieving an excellent wear resistance; plasma cladding is convenient to operate, and can be automatized; and the prepared wear-resistant layer is high in size precision and can be widely applied to surface modification of mechanical parts.

The invention discloses a high-carbon low-alloy wheel steel for a locomotive of improving flexibility and a wheel preparation method. The high-carbon low-alloy wheel steel comprises the following chemical components in percentage by weight: 0.56-0.66 percent of C, 0.95-1.20 percent of Si, 0.95-1.20 percent of Mn, 0.30-0.40 percent of Cr, 0.015-0.030 percent of Als, not more than 0.015 percent of P, not more than 0.015 percent of S and the balance of Fe and inevitable impurities. On the premise that the performance level of a wheel rim unchangeable is kept, the impact toughness of a wheel spoke can be effectively improved, the strength of the wheel spoke is reduced, and better matching of the comprehensive performance of the wheel spoke is obtained.

The present invention discloses a method for improving rotating bending fatigue performance of locomotive axle steel, and belongs to the technical field of metal material surface nanocrystallization. The method uses surface mechanical rolling treatment technology for surface nanocrystallization of locomotive axle LZ50 steel, and the treatment process is performed on a numerical control surface nanocrystallization treatment system. After the surface nanocrystallization treatment, a LZ50 steel surface structure is transformed into a gradient nano structure, the outermost layer crystal grain size is 10-50nm, the grain size gradually increases with the increase of the layer depth to the original grain size; the LZ50 steel surface nanocrystallization treatment state surface hardness is in a gradient distribution state, the outermost layer microhardness value is greater than 3.0GPa, and is significantly improved compared with the matrix hardness value; and the LZ50 steel surface nanocrystallization treatment state surface roughness is less than 0.4mum, and is significantly improved compared with the turning sate surface roughness. The rotating bending fatigue performance of the locomotive axle LZ50 steel is significantly improved by the surface nanocrystallization treatment.

The invention discloses an engine used for a hybrid motorcycle and a speed adjustment handle jointly controlled by a motor, comprising a turning handle and a casing body. A spool is arranged at the front end of the turning handle, a cable accelerator is winded on the spool, a magnetic steel is also arranged on the spool, a hall element is arranged on the casing body, the hall element is opposite to the magnetic steel on the spool, and a return spring is also arranged between the casing body and the turning handle; a raised arc connecting surface is arranged on the circumference of the spool. Compared with the technology of the prior art, the speed adjustment handle jointly controlled by the motor realizes the application of the carburetor type engine on the hybrid motorcycle, which ensures the controlling of the carburetor type engine to be flexible and the performance to be reliable; the speed adjustment handle jointly controlled by the motor is matched with the motorcycle performance, the steady switching of the driving mode and the smooth regulation of the speed exert the environment-protective and energy-saving effect of the hybrid motorcycle better. The device has the advantages of small volume, simple and compact structure, low manufacturing cost, and convenient assembly and disassembly on vehicles.

The invention discloses a novel non-contact intelligent card which consists of an independent miniature radio frequency module, a plane membrane radio frequency coupling amplification antenna with a miniature module mounting hole, a closed upper outer layer card base, an upper inner layer card base with a mounting hole, a closed lower outer layer card base, and a lower inner layer card base with a mounting hole; a radio frequency coupling antenna amplifies and transfers a signal of the miniature radio frequency module to realize normal non-contact communication of the miniature radio frequency module, the reliability of a product is enhance and the production cost of the product is reduced.

The invention provides an amorphous cutting tool coating used for dry machining of aluminum alloy. The amorphous cutting tool coating includes a binding layer which is laminated to the surface of a cutting tool, a transition layer which is laminated to the surface of the binding layer, and a functional film layer which is laminated to the surface of the transition layer and is composed of a layer A and a layer B that are alternately overlapped on each other. Number of the layer A is not less than 1 and number of the layer B is not less than 1. The layer A has an amorphous chromium carbide-amorphous carbon composite structure, wherein the amorphous chromium carbide is dispersed and distributed in the amorphous carbon as a substrate. The layer B is a diamond-like layer. The application also provides a preparation method of the amorphous cutting tool coating used for dry machining of aluminum alloy and provides a coated cutting tool. The amorphous cutting tool coating has high-temperature wear resistance, in particular, high hardness, low friction coefficient and good thermostability, and also is non-stick to aluminum. After machining with the cutting tool, aluminum alloy has smooth surface and stable chemical performance. The cutting tool is not chemically reacted with an aluminum work piece.

The present invention discloses an infrared detector chip for increasing capacitance density, comprising a pixel array and a capacitor array required for a readout circuit. The capacitor array is positioned above and / or below the pixel array. The pixel array comprises M rows and N columns of pixel units. The capacitor array comprises A rows and N / A columns of capacitor units, and each column of pixel units corresponds to one capacitor unit in the capacitor array. The row directions and the column directions of the capacitor array and the pixel array are the same. The length of the capacitor units in the row direction is equal to the length of A pixel units in the row direction. The infrared detector chip for increasing capacitance density provided by the present invention expands the capacitance between single metal layers into multiple layers, thereby increasing capacitance density. Meanwhile, the capacitor units are distributed above and below the array and the width of the capacitorunits is increased, thereby improving the performance matching between column readout circuits and finally enhancing the performance of the entire chip.

The invention provides a recording, broadcasting and camera shooting system with an Android system. The recording, broadcasting and camera shooting system comprises an all-in-one machine body, a camera, an HDMI input end, a display, an audio input end, a microphone and an external power amplification mechanism. A recording and playing module, a camera module, a switch, an Android module and a digital audio processor module are arranged in the all-in-one machine body, and the Android module and the digital audio processor module are arranged in the all-in-one machine body. When the all-in-one machine body and an external mechanism carry out data communication, an encryption method is used for processing data, and then data transmission is carried out. The problem of too many devices in a recording and broadcasting scheme is solved; performance matching between devices is poor. The laying construction is tedious, the cost is high, and the signal transmission stability between systems ispoor. Meanwhile, when the internal data and the external data are communicated, the problems that the bit error rate is increased due to environmental interference, unobstructed circuits and the like,the wireless data are easily intercepted by the outside in the transmission process, and the safety of the data is difficult to well guarantee are easily caused.

The invention discloses a multilayered oxygen sensor with a sheet type structure. The multilayered oxygen sensor with the sheet type structure comprises a zirconium oxide sensitive layer, a reference air channel layer and a heating layer, wherein an outer electrode is arranged on the upper surface of the zirconium oxide sensitive layer and an inner electrode is arranged on the lower surface of the zirconium oxide sensitive layer; the multilayered oxygen sensor with the sheet type structure is characterized in that a first porous transition layer for adjusting thermal expansion coefficients of different structure layers and preventing the layers from being cracked is arranged between the zirconium oxide sensitive layer and the reference air channel layer; a second porous transition layer for adjusting the thermal expansion coefficients of the different structure layers and preventing the layers from being cracked is arranged between the reference air channel layer and the heating layer; the multilayered oxygen sensor with the sheet type structure is sequentially provided with the zirconium oxide sensitive layer, the first porous transition layer, the reference air channel layer, the second porous transition layer and the heating layer. According to the multilayered oxygen sensor with the sheet type structure, interlayer stress caused by thermal expansion of the different structure layers can be adjusted so as to prevent the layers from being cracked and guarantee the service life of the oxygen sensor; meanwhile, the stable performance between the different structure layers is guaranteed and the performance of the oxygen sensor is improved.

The invention provides a compound technology of a titanium carbide reinforced cast iron base brake disc. Titanium wire is weaved into a titanium wire mesh; the titanium wire mesh is coiled by one layer or multiple layers or overlaid into a titanium wire stereoscopic and netted skeleton which adapts to the shape of a brake disc; the stereoscopic and netted skeleton is pre-arranged in a brake disc cast; then liquid cast iron is poured into the cast and is filled in each gap of the stereoscopic and netted skeleton; after cooled, a titanium wire-cast iron binary material prefabricated body is obtained; the prefabricated body is put into a thermal treatment furnace and keeps temperature at carbide forming temperature; and the cast iron base brake disc of which the working surface is a titaniumcarbide reinforced cast iron compound layer is obtained. The invention has the effect on abrasion resistance and hard phase, gives full play to the favorable abrasion resistance of titanium carbide hard phase and good strength and toughness of cast iron, has convenient technology regulation and control and stable and reliable quality, and solves the problems of incomplete reaction of composite material, uneven wild phase particle distribution, weakened wild phase interface pollution and the like.

The present invention discloses a method for improving rotating bending fatigue performance of locomotive axle steel, and belongs to the technical field of metal material surface nanocrystallization. The method uses surface mechanical rolling treatment technology for surface nanocrystallization of locomotive axle LZ50 steel, and the treatment process is performed on a numerical control surface nanocrystallization treatment system. After the surface nanocrystallization treatment, a LZ50 steel surface structure is transformed into a gradient nano structure, the outermost layer crystal grain size is 10-50nm, the grain size gradually increases with the increase of the layer depth to the original grain size; the LZ50 steel surface nanocrystallization treatment state surface hardness is in a gradient distribution state, the outermost layer microhardness value is greater than 3.0GPa, and is significantly improved compared with the matrix hardness value; and the LZ50 steel surface nanocrystallization treatment state surface roughness is less than 0.4mum, and is significantly improved compared with the turning sate surface roughness. The rotating bending fatigue performance of the locomotive axle LZ50 steel is significantly improved by the surface nanocrystallization treatment.

The invention relates to an in-situ synthesizing and compounding method of a desilting tip. In the compounding method, titanium wires are weaved into a titanium wire net to be rolled or stacked into a plurality of layers, and a net-shaped three-dimensional framework structure is manufactured in accordance with the shape of the desilting tip; a casting mould is manufactured according to requirements of a casting technology, and the titanium wire three-dimensional net-shaped framework is preset in the cavity of the casting mould; cast iron is smelted to obtain molten cast iron to be poured into the casting mould; the molten cast iron fills the gaps of the net-shaped three-dimensional framework, and the titanium wire net-shaped three-dimensional framework is obtained after cooling and cleaning and is fixed on a titanium wire-cast iron binary material preform in a metal substrate; and the titanium wire-cast iron binary material prefabricated body is arranged in a thermal treatment furnace and heated to a temperature of forming carbides for preserving the temperature, titanium carbide granules with high micro-hardness are prepared to obtain a compounding desilting tip with a titanium carbide granule reinforced cast iron base. The in-situ synthesizing and compounding method of the desilting tip fully develops high wear-resisting property of a titanium carbide hard phase and good toughness of the cast iron, has the advantages of convenient regulation and control and reliable technology and can be widely applied to the field of mine mining and beneficiation.

The invention discloses a device for taking injection molding machine rubber pieces.The device comprises N sets of grabbing units which are of a same structure and are sequentially arranged front and back and installed on the bottom face of a connecting plate; each grabbing unit comprises a blowing cylinder and a main grabber and an auxiliary grabber which are installed on the two sides of the blowing cylinder, wherein the blowing cylinder is installed at the center of a cover plate through an air inlet pipe, the upper portion of the cover plate is connected with a slideway plate, the two sides of the slideway plate are provided with slide grooves which are used for installing a main rack and an auxiliary rack respectively, the center of the slideway plate is provided with a circular groove which is used for installing a gear meshed with the main rack and the auxiliary rack, the main grabber and the auxiliary grabber are installed on guide rods arranged at the bottom of the cover plate respectively, the main grabber is connected with the main rack, the auxiliary grabber is connected with the auxiliary rack, the two ends of the slideway plate are vertically connected with support plates of the guide rods, the main grabber is connected with a push rod of a sucker-rod air cylinder installed on the support plates, and the main grabber and the auxiliary grabber are driven by the push rods to achieve clamping or loosening; the grabbing units are connected with the connecting plate through the slideway plates.According to the device, the labor cost and the labor intensity are low, the working efficiency is high, the product qualification rate is high, a mold is easy to clean, and the harm of harmful gas to workers can be avoided.

The invention discloses a heat treatment process for improving high-temperature tensile plasticity of a heat-resistant alloy, which comprises the following steps: 1) heating the heat-resistant alloy in a deformation state to 100-150 DEG C below the second phase dissolution temperature of a grain boundary, carrying out solution treatment for 30-45 min, and then performing cooling; and 2) heating the heat-resistant alloy treated in the step 1) to the temperature higher than a complete austenitizing temperature and lower than 50 DEG C, carrying out aging treatment, and then performing cooling. The structure morphology of the alloy is controlled through simple heat treatment, and the high-temperature ductility is improved by 70% or above under the condition that the tensile yield strength at the high temperature of 650 DEG C is not lost.

The invention relates to the technical field of bead durability evaluation. By improving the current mainstream bead durability test method, a test method for the bead durability performance of truck tires is provided to simulate the strength of the bead part of the actual tire in use to the greatest extent. In order to improve the authenticity of the bead durability performance of the test response: before the tire is assembled, the tread is ground, and the tread is ground to the bottom of the tire pattern groove. After grinding, the test tire is installed on the measuring rim that meets the regulations, and it is filled with 1100kPa. Test air pressure. After inflation, the test tire should be parked at an ambient temperature of 38°C ± 3°C for no less than 3 hours; test: There are 2 stages of test procedures, the duration of the first stage is 2 hours, and the pressure is set to the standard load pressure; The second stage runs until the tire is damaged, and the pressure is set to 200% of the standard load pressure; the speed remains unchanged at 50km / h during the test.

A bipolar electrode for a resectoscope, comprising two metal sleeves (12), an insulating casing (11), a twin-core conductor wire (19), a semi-ring positive electrode (13), a loop electrode (14), two ceramic insulating tubes (15) and terminals (18). The front sections of the two metal sleeves (12) are branched and arranged at a distance; and the rear sections thereof are arranged to abut to each other side by side, and the insulating casing (11) is provided at the periphery of the rear section. The front ends of the two metal sleeves (12) are fixedly connected to the two ends of the semi-ring positive electrode (13) by means of the two insulating tubes (15) respectively, and the tail ends thereof are provided with the terminal (18). One conductor wire in the twin-core conductor wire (19) is electrically connected to the metal sleeve (12), and the other conductor wire penetrates into the metal sleeve (12) and is electrically connected to the positive electrode (13) at the front end. The loop electrode (14) comprises two metal tubes which are respectively arranged at the front parts of the two metal sleeves (12) and electrically connected to the metal sleeves (12), and the exterior of the rear sections of the two metal tubes of the loop electrode (14) and the front sections of the metal sleeves (12) are wrapped in an insulating layer sleeve (31). The bipolar electrode is safe and reliable, and has an improved operation effect.

The invention relates to a high-weldability fine-grain low-alloy structural steel plate and a production method thereof. The high-weldability fine-grain low-alloy structural steel plate provided by the invention comprises the following chemical components in percentage by weight: 0.12-0.15% of C, 0.10-0.50% of Si, 1.00-1.60% of Mn, at most 0.020% of P, at most 0.010% of S, 0.60-1.0% of Ni, 0.20-0.40% of Cr, 0.20-0.40% of Mo, 0.005-0.020% of Nb, 0.015-0.05% of Al, and the balance of Fe and inevitable impurities. The production method of the steel plate comprises the following steps: electrosmelting, carrying out LF (ladle furnace) / VD (vacuum degasser) refining, carrying out die casting, heating an ingot, rolling a plate, cooling with water, and carrying out heat treatment to obtain the qualified steel plate. The room-temperature mechanical properties of the steel plate provided by the invention are equivalent to those of the foreign product; the grain fineness is Grade 7-8, the structure is full-bainite, the inclusions are lower than Grade 1, the inclusion content is low, the steel quality is pure, and the steel has excellent comprehensive mechanical properties; the mechanical properties of the steel plate completely satisfy the standard requirements of 145mm thick steel plate, and the steel plate has favorable compatibility.

A heat treatment process of a high-chromium heat-resistant alloy comprises the following steps: heating a deformed heat-resistant alloy to a temperature 30 DEG C above a second phase dissolution temperature of a grain boundary, carrying out solution treatment for 30-120 minutes, and then cooling; and then heating till the temperature is 10-40 DEG C below the complete austenitizing temperature of the heat-resisting alloy, performing aging treatment for 4-12 h, and then cooling. A matrix structure obtained through heat treatment is an austenite and martensite double-phase structure, and the volume fraction of the austenite is 40-50%. Fine discontinuous precipitated phases are distributed on grain boundaries, are mainly precipitated along the adjacent grain boundaries of austenite and martensite, cover about 80% of the adjacent grain boundaries of austenite and martensite, and are not more than 200nm in width. A large number of fine precipitated phases are distributed in austenite grains, the average size is not larger than 2 microns, and the volume fraction of the fine precipitated phases accounts for 30% or above of austenite; and the double-phase hardness of austenite and martensite is not lower than 300 HV.

The invention provides a car roof power receiving system car body connecting damping device and a method thereof. Piezoelectric damping materials are added in a vertical connecting device between a pantograph and a car roof, and therefore mechanical vibration and noise generated on one side of the pantograph are attenuated and separated through the piezoelectric damping materials in an energy loss mode, and influences on the environment in a passenger room from the pantograph are restrained, and stability of a car body in a high-speed running process is guaranteed. The car body connecting damping device is vertically connected between the pantograph and a car roof mounting seat and comprises an inner seat, a piezoelectric damping layer and an outer seat. The inner seat and the outer seat are made of metal materials. The piezoelectric damping layer is filled between the inner seat and the outer seat after pouring forming and is formed by a polymer matrix, piezoelectric ceramics and a conductive phase in a composite mode. Elastic connection is built between the power receiving system and the car body through the piezoelectric damping layer made of nonmetal materials and in a composite layer structure, vibration generated by air resistance from various directions can be weakened and absorbed, and generation of rigid resistance on the power receiving system is avoided.