266results about How to "No stress" patented technology

The invention discloses a through wafer interconnect structure processing method comprising: 1. etching a blind hole on a substrate; 2. etching a pattern dielectric substance layer on the substrate; 3. etching the pattern dielectric substance layer and the dielectric material at the bottom of the blind hole, keeping the dielectric material of a blind hole side wall; forming a dielectric substance hole on the substrate; 4. depositing a layer of conductive material on the dielectric substance hole and forming a conductive hole; 5. re-depositing a layer of pattern dielectric substance on the conductive layer and filling the conductive hole; 6. etching the back side of the plate to expose the conductive layer and forming a solder micro-convex point on the conductive layer, wherein the pattern dielectric substance material is preferable poly-p-xylene. The invention simplifies the process steps, reduces the process time and the cost; depresses a parasitic capacitance by using two layers of the pattern dielectric substance layers, improves a interconnect electrical behavior, suits for the high speed and RF three-dimensional interconnection structure; releases the thermal mismatch between the conductive material and the silicon and greatly reduces the thermal mechanical stress.

The invention belongs to the field of preparation of magnesium alloy biological medical materials and particularly relates to a Mg-Zn-Y-Nd alloy for biodegradable vascular stents and a preparation method thereof. The Mg-Zn-Y-Nd alloy comprises the following components in percentage by weight: 1 to 3 percent of Zn, 0.23 to 0.69 percent of Y, 0.5 to 1 percent of Nd and the balance of Mg, wherein the weight percentage content of Zn and the weight percentage content of Y meet a condition that the molar ratio of Zn to Y is kept at 6:1 constantly and the weight percentage content ratio of Y to N is smaller than 1. The preparation method comprises: preparing charging materials according to the composition of the Mg-Zn-Y-Nd alloy and the condition that the weight percentage content of the Zn and the weight percentage content of Nd is 20 to 30 percent more than those required, and smelting to obtain common Mg-Zn-Y-Nd alloy, wherein the charging materials of Mg, Zn, Y and Nd are high-purity magnesium ingots, high-purity zinc ingots, Mg-Y intermediate alloy and Mg-Nd intermediate. The Mg-Zn-Y-Nd alloy disclosed by the invention has high corrosion resistance and high plasticity.

The invention discloses an electric spark induction controllable erosion and electrolysis compound efficient machining method which is characterized by comprising the steps of: with electrolyte as a working medium, immersing one end of a to-be-machined workpiece electrode and a tool electrode in the working medium, intermittently introducing air to a machining area and forming an air film between the to-be-machined workpiece electrode and the tool electrode; generating electric spark discharge between the to-be-machined workpiece electrode and the tool electrode under the action of an electric spark power supply to ensure that the to-be-machined workpiece generates an oxidation exothermic reaction with the introduced air under the action of electric spark discharge ignition and forms a burning effect so that efficient ablation is realized; in an air closed stage, carrying out electrochemical machining and surface dressing on the ablation surface under the action of an electrolysis power supply; and alternating to start an electric spark ignition pulse power supply and an electrolysis eroding power supply and moving the tool electrode until machining is finished. The invention has the advantages of high material eroding efficiency up to be several times, even tens of times of that of the conventional electric spark machining and also be higher than that of the conventional electrolysis machining under the same electrical parameters on the premise of ensuring machining quality and precision, good surface quality, precision and controllability and capability of eliminating surface residual stress.

The invention provides a video file preview method and a video file preview device. The method includes the following steps that: receiving a video file preview instruction; responding to the instruction and determining a set dynamic preview area; obtaining the information of a currently-mapped first video file in the dynamic preview area from the source code of an interface to be displayed; and requesting a resource server of obtaining the first video file, and playing the obtained first video file in the dynamic preview area in the display of the interface to be displayed. Compared with a video file preview mode in the prior art, the video file preview method and the video file preview device of the invention can display a large quantity of information about video content in the dynamic preview area, so that a user can judge whether a video file satisfies his or her requirements based on the information, and therefore, unnecessary operation of the user can be avoided, and the problem of processing resource waste and increase of the burden of a server can be avoided.

The invention discloses electrolytic polishing solution for titanium and titanium alloys and an electrolytic polishing process, wherein the polishing solution is prepared by perchloric acid with volume fraction of 8-15% and acetic acid with volume fraction of 85-92%. The polishing solution is convenient in material selection, easy in preparation and storage, simple in polishing process equipment, easy in operation, smooth in surface, free of obvious scratches and oxide films and high in EBSD (Electron Back-Scattered Diffraction) pattern recognition rate, and has the effects of greatly reducing the superficial stress of the samples and greatly improving the detection precision.

The disclosed configuration method for Web page display comprises: receiving Web page set information from user to generate and store the configuration scheme, and picking up the scheme when user logging. Besides, one optimized case also includes: displaying item style designs of different types; receiving user command for selecting item figure; obtaining figure information to load on page; generating configuration scheme to store in local, and saving current scheme into DB.

The invention provides a graphite base with a protective coating layer and a preparation method thereof. The invention prepares a silicon carbide coating layer on the surface of the porous graphite base through combining the in-situ chemical gas-phase reaction permeation and the chemical gas-phase deposition two-step method. The preparation method is carried out according to the following steps: placing the a base body of the graphite base in a reaction chamber, introducing SiCl4 gas and H2 gas into the reaction chamber according to the volume ratio that SiCl4/H2 equals to 1/5 to 50 under the condition of the reaction chamber temperature between 1300 and 1600 DEG C and the vacuum between 200 and 500 Pa, wherein the hydrogen flow rate is between 200 and 1000 ml/min, the gas introduction time is between 0.5 and 2 hours, and a primary SiC coating layer is permeated on the base body of the graphite base through the in-situ gas-phase reaction; and then b, introducing CH3SiCl3 gas and H2 gas into the reaction chamber according to the volume ratio that CH3SiCl3/H2 equals to 1/5 to 100, controlling the hydrogen flow rate to be in a range between 200 and 1000 ml/m and the gas introduction time between 1 and 50 hours, and depositing a secondary SiC coating layer outside the surface of the primary SiC coating layer after schizolysis.

The present invention proposes a rework process for producing white spot monocrystalline silicon wafers. The process steps include: performing high temperature treatment on the white spot single crystal silicon wafers to volatilize the remaining impurities on the surface of the white spot single crystal silicon wafers; The monocrystalline silicon wafer with white spot is subjected to a texturing process to remove the white spot on the surface of the single crystal silicon wafer. The rework process of the white spot monocrystalline silicon wafer provided by the present invention is to carry out high temperature treatment on the white spot single crystal silicon wafer to volatilize the remaining impurities on the surface, and the white spot single crystal silicon wafer from which impurities are removed will be used in the subsequent texturing process It is conducive to corrosion, can effectively remove white spots on the surface of single crystal silicon wafers, and greatly improves the yield rate of reworked silicon wafers.

The invention relates to the field of feed additives, in particular to a functional dairy cattle feed additive capable of preventing subclinical mastitis of dairy cattle. According to the functional dairy cattle feed additive, based on the total weight of the additive, the functional dairy cattle feed additive contains 2%-6% of organic selenium, 2%-6% of organic zinc, 4-8% of biological antioxidant, 8%-12% of mold adsorbent, 0.2%-0.6% of vitamins, 8%-12% of conventional additive for reducing the number of somatic cells, and 50%-80% of carrier. The invention provides the functional dairy cattle feed additive capable of preventing the subclinical mastitis of the dairy cattle and reducing the number of the somatic cells, the formula is reasonable, the nutrition is balanced, the number of thesomatic cells in the dairy cattle can be effectively reduced, the incidence of the subclinical mastitis of the dairy cattle can be reduced, the good development mechanism of a mammary system can be maintained, and the milk yield and the milk quality of the dairy cattle can be improved.

The invention relates to suspension abrasive water jet 3D cutting equipment adopting a seven-shaft intelligent robot, in particular to suspension abrasive water jet cutting equipment which comprises a high-pressure pump station used for providing cutting power, an abrasive filling device and a suspension abrasive generating device used for producing abrasive, wherein a discharge hole of the abrasive filling device is connected with a feed hole of a high-pressure container arranged in the suspension abrasive generating device through a feed pipe, a water inlet of the abrasive filling device is connected with a water outlet of the high-pressure container arranged in the suspension abrasive generating device through a water inlet pipe; high-pressure water generated by the high-pressure pump station is connected with a tee joint arranged in the suspension abrasive generating device through a high-pressure pipe. The product provided by the invention adopts a pre-mixing suspension abrasive cutting technology, the cutting pressure is low, and the efficiency is high; the equipment adopts a high-pressure hose as a suspension abrasive conveying pipeline, the conveying distance is long, and the equipment ensures that a nozzle device can realize high-precision motion of any track and any angle in space under the drive of a robot actuator.

The invention relates to a coating peeling, surface finishing and burring equipment, in particular to pulse water jet coating peeling and finishing equipment comprising a protecting cover. The protecting cover is provided with collecting box inside, the side of the collecting box is fixedly provided with a robot executing mechanism, a sprayer device is fixed to the front end of a moving arm of the robot executing mechanism, the surface of a high-pressure generating device is provided with a pressure regulator, the high-pressure generating device is connected to the sprayer device through a high-pressure pipeline, the upper end of the sprayer device is fixed to an ultrasonic transducer connected to an ultrasonic generator through a cable, and the lower end of the ultrasonic transducer is connected to a high-pressure water jet sprayer; the top of the protecting cover is provided with a fog absorbing device, and the fog absorbing port of the fog absorbing device corresponds to the washing station of the sprayer device. By the aid of the finishing equipment, carbon deposition and coating of the surfaces of aerospace engine parts, the parts can be washed, and the surfaces can be finished.

The invention relates to a method for reinforcement repair of a metal pipeline with the defect, which is particularly suitable for on-site operations under the condition of continuous transmission of the pipeline. The method is characterized in that: after the surface of a pipe body is treated by using sand blast (recommended) or an electric angle grinder, the defect 2 is filled and leveled up by hot spraying metal alloy, and the surface of the integral circle of the pipe body 1 is sprayed to form a metal alloy basement layer 3, wherein the metal alloy basement layer has the excellent compression strength; a fiber resin composite 4 formed by fibers and an epoxy bonder is wound on the basement layer, the cured fiber resin composite has the high tensile strength and elastic modulus, so the fiber resin composite limits the radial dilatational strain at the defect, and reduces the stretching stress and stretching strain at the defect through the metal alloy basement layer to realize the reinforcement repair on the defect of the pipeline.

The invention relates to a reinforcement method for pre-stress continuous beam base plate cracks. A continuous beam midspan base plate is cracked after a pre-stress pipeline is grouted, so that the maintenance and the reinforcement can not be finished by using a method for re-tensioning pre-stress steel bundles in a beam body. The reinforcement method comprises the following steps of: digging off concrete formed by cracking of the base plate; symmetrically and uniformly applying a pre-stress load to layered stacks from the two sides to the middle within a midspan range; embedding new reinforcement steel bars into drilling holes, resetting steel bar meshes on the top layer and the bottom layer of the conventional base plate, binding and fixing the steel bar meshes, and cleaning floating slurry on the surfaces of the steel bars; and after the concrete achieves the strength, symmetrically and uniformly unloading from two sides to the middle until the load is zero, wherein an elastic upper arch of a beam body pressurizes the base plate, so that a top plate is decompressed; and therefore, pre-stress is applied, and a reinforcement effect is achieved. By using the mechanical characteristics of the stress on a continuous beam, the pre-stress load is applied to a cracked section, and natural pre-stress is supplied to the cracked section; and therefore, the reinforcement construction difficulty and the construction cost are reduced, and consequences caused by the high stress and high creepage are avoided.

The invention relates to a medical 3-dimensional imaging operating microscope system. The medical 3-dimensional imaging operating microscope system comprises an operating microscope used for outputting three optical paths, namely, a first optical path, a second optical path and a third optical path, the first optical path and the second optical path are both optical signals within an operating region, and the third optical path is an optical signal inside and outside the operating region, that is, the third optical path is a broad-view image optical path; the first optical path forms a first electrical signal through a first optical interface and a first image sensor; the second optical path forms a second electrical signal through a second optical interface and a second image sensor; the third optical path forms a third electrical signal through a third optical interface and a third image sensor; and a video processor processes and synthesizes the first electrical signal and the second electrical signal into a 3-dimensional image, processes the third electrical signal into a 2-dimensional image, and transmits the 3D image and the 2D image to display equipment for display. The medical 3-dimensional imaging operating microscope system can reduce the metal stress and fatigue feeling of surgeons, thereby lowering the operating risk.

An all-fiber pulsed fiber laser device with a composite chamber comprises a semiconductor laser pumping source driven by a semiconductor laser pumping source driving module, a fiber wavelength division multiplexer, a gain medium fiber, a first optoisolator, a photo-coupler, a pigtailed photoswitch driven by a photoswitch driving module, and a second optoisolator, wherein an output terminal of the semiconductor laser pumping source is connected with a short wavelength input terminal of the fiber wavelength division multiplexer, an output terminal of the fiber wavelength division multiplexer is connected with an input terminal of the photo-coupler by successively passing through the gain medium fiber and the first optoisolator, an output terminal of the photo-coupler serves as an output terminal of the laser, one end of the pigtailed photoswitch is connected with a long wavelength input terminal of the fiber wavelength division multiplexer via the second optoisolator, a cascading interference chamber is arranged between the photo-coupler and the pigtailed photoswitch, an input terminal of the cascading interference chamber is connected with a feedback output terminal of the photo-coupler, and an output terminal of the cascading interference chamber is connected with the other end of the pigtailed photoswitch.

The invention relates to a holding device of a static pressure pile driver. The holding device of the static pressure pile driver comprises a circular support, and a plurality of support tables, wherein the upper layer and the lower layer of the plurality of support tables are arranged on the inner side of the circular support and the support tables stretch toward the center of the circular support, and the plurality of support tables arranged on the upper layer of the inner side of the circular support and the plurality of support tables arranged on the lower layer of the inner side of the circular support are respectively on a same horizontal level. The holding device of the static pressure pile driver is characterized in that each support table is provided with a telescopic device, one end of the telescopic device is fixedly arranged on the support table, and the other end of the telescopic device is provided with a clamping plate. The plurality of clamping plates of the support tables on the upper layer of the circular support form an upper lamping group, the plurality of clamping plates of the support tables on the lower layer of the circular support form a lower lamping group, and each clamping plate is provided with a pressure sensor. Therefore, the phenomena of uneven stress of pile bodies and instability of the pile bodies cannot occur to the holding device of the static pressure pile driver, the holding device of the static pressure pile driver can greatly improve the stability of the pile bodies in a pilling process, and therefore the efficiency of pilling is improved.

The invention discloses a heating plate for soldering of an IGBT (insulated gate bipolar transistor) module and a soldering method of the IGBT module. The heating plate is designed to adopt a heating column structure, during soldering, the back of a bottom plate is completely laminated with the base and/or the upper surface of the heating column of the heating plate under the effect of gravity, the heating plate can be adapted to different pre-bending shapes of bottom plates, fully lamination of the heating plate with the arc-shaped bottom plate of the IGBT module in the reflow soldering process is guaranteed, the contact area of the heating plate and the bottom plate of the IGBT module is increased, the uniformity of the temperature of the bottom plate of the IGBT module in the soldering process is guaranteed, the soldering void ratio is decreased, and the reliability of the IGBT module is improved.

The invention provides a temporary anchor cable balance construction method in the erecting process of a suspension bridge girder, and belongs to the technical field of bridge engineering. The temporary anchor cable balance construction method comprises the steps that a bracket is erected at the position close to the anchorage position firstly, the first section of the girder is mounted on the bracket, and a temporary anchor cable is mounted on the girder to be connected with a side span main cable; then a mid-span beam section is hoisted, the temporary anchor cable mounted on the first section of the girder automatically tightens while the weight of the mid-span beam section is gradually transferred to a mid-span main cable, equivalently, the load is simultaneously applied to the side span and the side span main cable, and significantly-increased main cable force due to the excessively high weight of the beam section of the mid span is balanced; and then a beam section is hoisted at the side span, the side span main cable generates large displacement downwards, thus the tightened temporary anchor cable automatically loosens, the increase amplitude of the side span main cable forceis also decreased accordingly, and unbalanced force of a cable tower due to hoisting construction is decreased. According to the temporary anchor cable balance construction method, the ability of automatically balancing the main span main cable force and the side span main cable force of a suspension bridge is achieved, the bending moment of the cable tower can be decreased, and thus bridge toweris safer during stress.

The invention discloses a light-emitting diode chip bonding method, a bonded light-emitting diode and a chip structure. The light-emitting diode chip bonding method is suitable for bonding a light-emitting diode chip on a substrate. The light-emitting diode chip is provided with a first metal film layer. The chip structure comprises a chip and a bonding material layer, wherein the bonding material layer is arranged on one side of the chip. The bonding method comprises the following steps of: forming a second metal film layer on the surface of the substrate; forming the bonding material layer on the second metal film layer; placing the light-emitting diode chip on the bonding material layer and making the first metal film layer contact the bonding material layer; heating the bonding material layer for a pre-curing time at a liquid-solid reaction temperature to form a first intermetallic layer and a second intermetallic layer; and heating the bonding material layer for a curing time at a solid-solid reaction temperature to perform a solid-solid reaction. The liquid-solid reaction temperature and the solid-solid reaction temperature are both lower than 110 DEG C; and the melting points of the first intermetallic layer and the second intermetallic layer after the solid-solid reaction are higher than 200 DEG C.

The invention relates to a QDF (quiescent direct furnace) direct reduction technology which comprises the following steps: uniformly mixing a metal-containing raw material and reducing agent powder, and putting into each reducing chamber, wherein in a reducing process, the reducing chambers and the reduced material are all kept in a stationary state; uniformly heating the materials in the reducing chambers by use of the heat generated by the combustion of the fuel in a combustion chamber and a combustion-supporting gas so as to perform a reduction reaction between the metal-containing raw material and the reducing agent, wherein each reducing chamber is a narrow long one-section reactor. According to the technology provided by the invention, the reducing chambers and the reduced material are all in a stationary state, the requirement on the strength of the granular raw material is reduced, and the production efficiency of a granulation process is improved; and the reducing time can be prolonged, and the metallization ratio of the reduction product is improved. The reducing chamber is not provided with a preheating area or a cooling area, the temperature is uniform, the atmosphere is uniform and consistent, and the overall quality of the reduction product is improved. The direct reduction technology has remarkable advantages of wide application range of raw materials, uniform temperature field, easy control on reduction process, high product metallization ratio, high yield and the like.

The invention discloses a mobile terminal and a distribution method and device of a motion signal of the mobile terminal. The motion signal is collected by a gyroscope in a camera module of the mobile terminal. The method comprises the steps of acquiring, by a processor of the mobile terminal, a type of a currently running application, wherein the running of the application needs to use the motion signal; according to the type of the application, acquiring the motion signal collected by the gyroscope; and/or sending a control command to the gyroscope, and controlling the gyroscope to send the collected motion signal to an optical anti-shaking module of the mobile terminal. Through adoption of the mobile terminal and the distribution method and device of the motion signal of the mobile terminal, the gyroscope does not need to be arranged on a mainboard, so that the cost is saved; and the impact of mainboard temperature and stress is prevented, so that the motion signal is more accurate, and the distribution method of the motion signal is simple and effective.