282results about How to "Reduce heat damage" patented technology

The invention provides a wet-type high-power combined laser cleaning method suitable for a heavily-corroded steel structure. S1, measuring the thickness of a rust layer on the steel surface of the steel structure; s2, liquid is sprayed to the surface of the to-be-cleaned area of the steel structure to form a liquid film, and the liquid film is used for increasing the laser absorptivity of the surface of the rust layer; s3, the to-be-cleaned area is preliminarily cleaned through continuous laser, the rust layer is made to be fluffy and stripped through the thermal expansion effect, and the thickness of the rust layer is reduced to be not larger than the target threshold value of preliminary cleaning; s4, performing fine cleaning by using pulse laser to accurately remove a residual stubborn rust layer; s5, the to-be-cleaned area is washed; the device can effectively remove a rust layer on the surface of the steel, reduce plasma and smoke dust generated in the laser cleaning process, ensure the safety and high efficiency of the cleaning process, adopt the combination of continuous laser and pulse laser, clean in stages, effectively improve the cleaning efficiency, and reduce thermal damage to the surface of the steel.

The invention relates to a production process of a high-elasticity heat-resistant polyester yarn, which comprises the following steps: firstly, selecting high-molecular-weight polyethylene glycol terephthalate, adding 1-3% of nano filler and 5-10% of functional copolymer, and drying at 150 DEG C for 4-6 hours to improve the stability and processability of the material; secondly, melt extrusion is conducted at 280-290 DEG C, spinning is conducted through a multi-section temperature control spinning head, and the fiber cooling uniformity is effectively controlled. Then, two times of drafting and a heat setting process are adopted, the orientation degree of a molecular chain is improved in one time of drafting, and low-temperature plasma treatment is combined to optimize the surface activity and the setting effect of the fibers. In the secondary drafting, the fiber deformation is finely adjusted at low temperature, the thermal damage is reduced, the elasticity is improved, and finally, xylanase treatment and ultraviolet curing are combined, so that the softness, the skin-friendly property and the weather resistance of the fiber are remarkably improved.

The invention relates to the technical field of machine tool intelligent machining, and discloses a machining method based on deep learning and multi-sensor fusion, which comprises the following steps: collecting data in the machining process of a numerical control machine tool, and preprocessing the data in the machining process of the numerical control machine tool to obtain a data set; inputting the obtained data set corresponding to the data acquired by the plurality of sensors into a Kalman filtering algorithm for Kalman recursive filtering processing to obtain fused actual observation data acquired by the sensors; inputting a data set corresponding to the fused actual observation data acquired by the sensor and the data acquired by the numerical control system into a depth Q network algorithm, and predicting to obtain an optimal tool path; a magnetic field is applied to the machined workpiece through the excitation module; and machining a machined workpiece model along the optimal tool path by adopting an ultrasonic tool high-frequency machining method. According to the invention, the surface quality of the to-be-processed workpiece can be obviously improved.

The invention discloses a high-quality laser welding manufacturing device and a high-quality laser welding manufacturing method, which solve the problems of concentrated energy distribution, small inherent focal depth, insufficient depth-diameter ratio of welding and insufficient welding thickness of the existing ultrafast laser welding technology. The zoom collimation system, the cone mirror, the acousto-optic modulation unit and the long focal depth compression unit are sequentially arranged on a light path where the welding laser is located in the emergent direction of the welding laser. The zoom collimation system is used for changing the spot diameter of the welding laser and collimating the spot diameter; the cone mirror is used for shaping the welding laser subjected to diameter-variable collimation into long-focal-depth laser; the acousto-optic modulation unit divides the long-focal-depth laser into N sub-beams and adjusts the spatial position of each sub-beam, and N is a positive integer greater than or equal to 1; and the long focal depth compression unit is used for adjusting the spot diameter and focal depth length of each sub-beam, so that the focal position and energy of each sub-beam are suitable for laser welding.

The invention belongs to the technical field of ultrasonic scalpel energy control, and particularly relates to an ultrasonic scalpel energy control method based on a vascular tissue model. According to the method, the blood vessel layering model is established, the mechanical property change of the blood vessel tissue is monitored in real time, the real-time energy loss is accurately calculated, and the real-time output power of the ultrasonic knife system is adjusted in real time according to the real-time loss angle. According to the method, the cavitation, curing and disjunction stages can be judged according to the real-time state of the vascular tissue, energy output is accurately controlled, it is ensured that the large-diameter blood vessel is fully cured, the bursting pressure is increased, and meanwhile thermal damage caused by excessive curing of the small-diameter blood vessel is avoided. The problems that a traditional ultrasonic scalpel system is inaccurate in energy control and poor in adaptability to blood vessels with different diameters can be effectively solved, the heat injury and postoperative bleeding risks in the blood vessel cutting process are remarkably reduced, the operation efficiency is improved, and postoperative recovery of a patient is better facilitated.

The invention discloses an ultrasonic osteotome control system for removing bones and reducing resistance of alveolar bones in the technical field of medical treatment, and the ultrasonic osteotome control system comprises an ultrasonic osteotome and a controller, a signal processing module; a judgment module; a control module; the three-dimensional image navigation module is used for positioning the ultrasonic osteotome and planning an operation path; the integrated heat dissipation module is used for dissipating heat generated when the ultrasonic osteotome works; the cooling liquid module is used for intelligently adjusting the spraying amount and spraying speed of cooling liquid according to the temperature change of the surgical site and providing different cooling liquid modes, and the cooling liquid modes comprise an anesthesia mode, a disinfection mode and a wound healing mode; and a monitoring feedback module. The ultrasonic osteotome is scientific and reasonable, and intelligent control and precise surgical operation of the ultrasonic osteotome are achieved by integrating advanced signal collecting, processing and judging technologies and combining three-dimensional image navigation, intelligent heat dissipation, multifunctional cooling liquid and a real-time monitoring feedback module.

The invention discloses a rapid frequency tracking method for an ultrasonic scalpel, which comprises the following steps of: outputting two alternating excitation signals with different frequencies through an ultrasonic generator, collecting voltage, current and phase difference of a transducer under the excitation of two different frequencies, calculating a tangent value of a load impedance angle under the excitation of two different frequencies, and calculating the frequency of the ultrasonic scalpel according to the tangent value. The dynamic resistance, the dynamic capacitance and the dynamic inductance of the transducer are calculated through the tangent values of the two different impedance angles; obtaining the current resonant frequency of the transducer through the obtained dynamic resistance, dynamic capacitance and dynamic inductance of the transducer; determining a load impedance angle threshold value of the transducer through impedance curve characteristics of the transducer, and determining a frequency step length required to be adjusted for frequency tracking according to the determined load impedance angle threshold value of the transducer; according to the ultrasonic scalpel system, the time of the detuning state of the transducer is shortened, the dynamic response performance of the ultrasonic scalpel system is improved, and the ultrasonic scalpel is higher in cutting speed and lower in heat damage in the working process.

The utility model relates to the field of automobile electrical systems, and discloses a positive wire harness with waterproof protection, which comprises a wire harness body, two ends of the wire harness body are movably sleeved with wire harness clamping sleeves, the outer ends of the two wire harness clamping sleeves are fixedly provided with two fixing blocks, the four fixing blocks are provided with clamping grooves, and the clamping grooves are connected with the wire harness body. And connecting rods are slidably arranged at the inner ends of the opposite sides of the four fixing blocks, a connecting block is fixedly arranged at the upper end of the wire harness clamping sleeve, a protective shell is fixedly arranged at the upper end of the connecting block, and a movable door is hinged to the front end of the protective shell through a torsion spring. According to the utility model, the wire harness is subjected to waterproof treatment, so that the waterproof performance of the wire harness can be effectively improved, the wire harness can work normally in a humid severe environment, the environmental adaptability of the wire harness is improved, the risks of short circuit, electric leakage and the like are reduced, the safety of the wire harness is improved, and the wire harness is made of a multi-layer structure, so that the influence of chemical corrosion and high-temperature environment can be effectively resisted; and the service life of the wire harness is prolonged.

The invention relates to the technical field of leaky coaxial cable production, in particular to a leaky coaxial cable production method which comprises the following steps: S1, welding an inner conductor; s2, foaming and extruding to form an insulating layer; s3, seamless welding of the outer conductor; s4, performing laser hole cutting on the outer conductor through laser processing equipment; and S5, sheath processing. According to the leaky coaxial cable production method, after the outer conductor is seamlessly welded into the circular tube, slotted hole cutting is carried out on the outer conductor through laser, the roundness of the outer conductor can be better, meanwhile, the situations of slotted hole deformation, wrinkling and the like can be reduced, and the cable performance is improved.

The invention provides a planar electrode for spinal cord electrical stimulation and a preparation method thereof, and belongs to the technical field of medical instruments, and specifically, the planar electrode comprises a flexible substrate, electrode stimulation points, a conductive circuit, a bonding pad and a flexible insulating layer; a modification layer is deposited on the upper surface of the electrode stimulation point, the modification layer forms a grass-shaped morphology with forest leaves, and the modification layer is a platinum layer or a platinum-iridium alloy layer. A platinum layer or a platinum-iridium alloy layer is adopted as a modification layer, the effect of reducing impedance can be achieved, compared with a traditional plane morphology, the grass-shaped morphology with the forest blades can greatly increase the contact area between a film layer and tissue, the impedance is effectively reduced, dissipation of current on an electrode and a biological tissue interface can be reduced through the low impedance, and the service life of the electrode and the biological tissue interface is prolonged. Charge injection efficiency is improved, heating is reduced, tissue thermal damage is avoided, meanwhile, the platinum-iridium alloy material is reversible in chemical reaction in the electrical stimulation process, and toxic substances or material loss caused by the reaction cannot be generated.

The invention discloses a method for simultaneously extracting starch and protein and application thereof. The invention belongs to the technical field of corn deep processing. The invention aims to solve the technical problems that the existing method is low in production efficiency and the obtained corn starch and corn protein are poor in processing characteristic and digestion characteristic. The method comprises the following steps: (1) performing vacuum low-temperature alkalization cooking on corn kernels in a calcium hydroxide solution; (2) performing ultrasonic-high static pressure cooperative treatment after cooking, and then soaking; (3) performing coarse grinding on the soaked corn kernels, then performing fine grinding, and performing enzymolysis with compound protease; and (4) finely grinding, filtering, standing, centrifuging, washing with water, precipitating, respectively collecting a lower-layer white part and an upper-layer yellow part, and freeze-drying to respectively obtain the corn starch and the corn protein. The method improves the processing characteristics of starch and the digestion characteristics of protein, and can be applied to development and production of high-quality corn starch or corn protein-based food.

The invention relates to a semi-rigid constraint friction additive manufacturing device and method, in particular to a semi-rigid constraint friction additive manufacturing device and method with the high material utilization rate. The invention aims to solve the problems of low material utilization rate and high improvement cost of two technical branches of friction deposition additive manufacturing based on bar raw materials. The device comprises a semi-rigid constraint body, a temperature control counterweight body, two wire feeding wheels, a bar raw material, a component to be subjected to material addition and a deposition layer. The deposition layer is arranged on the upper surface of a to-be-added component, the temperature control balance weight body is arranged on the upper surface of the deposition layer, the semi-rigid constraint body is arranged in the temperature control balance weight body, the lower surface of the semi-rigid constraint body is attached to the upper surface of the deposition layer, and the lower end of a bar raw material penetrates through a through hole in the upper surface of the temperature control balance weight body and then is inserted into the semi-rigid constraint body. The two wire feeding wheels are symmetrically arranged on the two sides of a plate raw material. The invention belongs to the technical field of solid phase additive manufacturing.

The invention discloses a laser directional induction arc discharge milling processing system and a laser directional induction arc discharge milling processing method. According to the method, laser is used for puncturing air to directionally trigger arc combustion to efficiently remove materials, meanwhile, air jet flow under a large discharge gap is used for effective arc breaking, continuous arcs are prevented from burning a workpiece, and the conductive performance of the workpiece does not need to be considered; the arc plasma motion trail is copied on a workpiece to form a specific complex contour, and therefore the efficient and high-precision machining method for the high-performance material complex part characteristics is achieved.

The invention discloses a plasma tissue dissociation knife, and relates to the technical field of medical instruments. In order to solve the problems that when an existing endoscopic surgery relates to a plurality of instruments, the instruments need to be frequently switched for surgical operation, and the surgical efficiency is reduced, the following technical scheme is provided: the endoscopic surgical instrument comprises a tool bit, a tool bar, a handle and a cable which are connected in sequence; the cutter head comprises a blade telescopic assembly arranged on the head portion, an endoscope guide tube and a cutter head telescopic control mechanism are arranged in the handle, and the cutter head telescopic control mechanism drives a blade in the blade telescopic assembly to stretch out and draw back through a transmission piece. The positive cable extends to the tool bit to be connected with the blade telescopic assembly, the negative steel pipe is connected with the negative cable, and double-frequency emitter cutting is formed at the blade; the suction channel arranged in the cutter bar is used for flushing the surgical field and sucking turbid liquid in the operation. Compared with a traditional cold instrument, cutting efficiency, bleeding amount control, clear surgical field, cutter bar size optimization, cutting flexibility, sealing performance, operation convenience and the like are remarkably improved.

The invention discloses a method for enhancing CVD diamond heteroepitaxial nucleation through pulse positive bias, and belongs to the technical field of CVD method heteroepitaxial single crystal diamond. Firstly, a molybdenum support bearing a sample is placed on a water cooling table in the center of a CVD cavity, the positive electrode of a direct-current pulse power supply is connected to an antenna of CVD equipment through a wire, and the other electrode of the direct-current pulse power supply is connected to a shell of the CVD cavity through a wire and is grounded; then placing a heterogeneous substrate for epitaxy in the center of the molybdenum support, and vacuumizing; introducing hydrogen, turning on a microwave power supply, gradually increasing power and adjusting air pressure; and methane is introduced, a pulsed bias power supply is turned on, and enhanced nucleation is carried out. According to the invention, the direct-current pulse power supply is used for bombarding the surface of the matrix in a discontinuous pulse mode, so that the thermal balance compensation effect is achieved; meanwhile, pulse positive bias voltage is applied to the base body, the effect of high-density epitaxial nucleation on the insulating heterogeneous substrate is achieved, and the method has important significance on heteroepitaxial growth and application of large-size single crystal diamond.

The invention discloses a vehicle-mounted charger shell friction welding device and a welding method thereof, and relates to the technical field of resistance substrate detection.The vehicle-mounted charger shell friction welding device comprises a base, Y-axis displacement mechanisms are fixedly installed on the two sides of the upper end face of the base, and an X-axis displacement mechanism is installed between the two Y-axis displacement mechanisms; an X-axis displacement mechanism is installed on the upper portion of the base, a vertical displacement mechanism is installed below the X-axis displacement mechanism, a friction welding mechanism is arranged at the bottom of the vertical displacement mechanism, a shell clamping mechanism is arranged in the middle of the upper end of the base and comprises guide grooves, clamping plates are installed above the guide grooves correspondingly, and the clamping plates are arranged on the upper portions of the guide grooves correspondingly. And a transmission rod is installed in the guide groove, a threaded transmission pipe is installed outside the transmission rod, a sliding block is installed outside the threaded transmission pipe, and the problems that in a traditional welding mode, the welding speed cannot be increased on the premise that the flatness of the welding position is ensured, and the flexibility of a positioning mechanism is poor are solved.

The invention relates to the technical field of semiconductors, in particular to a low-temperature bonding method of a chip, which comprises the following steps of: preparing an upper chip with a micro bump which comprises a low-temperature material containing Sn; preparing a lower chip with a copper column, and reducing the roughness of the bonding surface of the copper column; and enabling the bonding surfaces of the micro bumps and the copper columns to be opposite, and carrying out bonding in a vacuum environment under the conditions that the temperature is 50-150 DEG C, the pressure is 10-40MPa and the pulse voltage is 2-6V. According to the low-temperature bonding method of the chip, low-temperature bonding can be realized, the bonding stability is improved, thermal damage caused by bonding is reduced, and the problem of warping of substrates of the upper chip and the lower chip after bonding is solved.

The present invention discloses an independent multi-point quartz lamp thermal assessment device based on focused heating, which can perform remote, continuous, non-contact and controllable heating on the heating surface or point of the sample under test, which not only overcomes the shortcomings of traditional gas thermal shock test devices, such as high cost, large noise pollution, difficult control of temperature distribution and rising and falling rates, low safety, and inability of isothermal thermal cycle test devices to achieve gradient thermal shock, but also overcomes the shortcomings of traditional quartz lamp heating devices, such as low efficiency, low temperature rise, low upper temperature limit, short continuous heating time, and poor adaptability. At the same time, gradient or isothermal thermal shock in a wide range can be achieved by adjusting the heating power, heating distance, and modular splicing number of the quartz lamp. Therefore, the present invention realizes an economical, safe, clean, quiet, flexible and efficient gradient thermal shock test device.

The invention relates to the technical field of automobile part manufacturing, and discloses metal plate drilling equipment for new energy automobile part manufacturing, which comprises a machining base, the top of the machining base is fixedly connected with a telescopic bracket, and the movable end of the telescopic bracket is fixedly connected with a limiting frame; an electric sliding rail is fixedly connected to the top of the limiting frame through a support, an electric sliding block is slidably connected to the interior of the electric sliding rail, and a containing table is fixedly connected to the position, located in the center, of the top of the machining base. The drilling device is used for drilling the metal plate to be machined; the cooling device is used for reducing the temperature of the drilling area; the number of the telescopic supports is two. According to the metal plate drilling equipment for new energy automobile part manufacturing, chippings generated during drilling can be prevented from splashing out, the chippings generated during drilling are rapidly sucked away, and it is avoided that many chippings are accumulated in the dustproof barrel.

The invention relates to a busbar arrangement structure of a motor flat wire winding and an integral forming method of the busbar arrangement structure in the field of motor winding parts. Flat cables of a busbar are fixed according to an installation sequence through an encapsulation inner mold with a flat wire groove and a copper wire bracket; the pouring cavity for wrapping the busbar is formed through the matching of the pouring outer mold and the pouring inner mold, and the busbar and the copper wire bracket are subjected to pouring sealant integrated pouring, so that a flat cable of the busbar is sealed in a pouring sealant colloid after pouring, the protection property of the busbar is enhanced, the overall welding and fixing of a welding machine are facilitated, and the production efficiency is improved. In addition, through a lower inner pouring gate and an upper inner pouring gate which are formed in the core shaft and a lower outer pouring gate and an upper outer pouring gate which are formed in the pouring inner mold, communication between the pouring cavity and the center pouring gate is achieved, one-time pouring of pouring sealant is achieved, and the sealing quality is improved. And the forming uniformity and the pouring efficiency are improved.

The embodiment of the invention provides a method and device for opening a protective film layer on the surface of a substrate, a preparation method of a solar cell and a photovoltaic module. The method for opening the protective film layer on the surface of the substrate comprises the steps that the substrate is obtained; controlling a laser emitting device to irradiate a first area of the protective film layer with a preset light spot; the laser emitting device is controlled to move in the first direction from the first area at a preset speed until film opening of the area, extending in the first direction, of the first area is completed; the next area where the laser emitting device moves from the first area in the first direction is a second area; the first region and the second region have a first overlapping region; the preset light spot comprises a second energy light area and a first energy light area; the energy of the first energy light area is lower than that of the second energy light area, and the first energy light area surrounds the second energy light area. According to the embodiment of the invention, thermal damage to the polycrystalline silicon layer can be reduced when the protective film layer on the polycrystalline silicon layer is removed.

The invention discloses a water jet assisted millisecond laser-femtosecond laser secondary composite hole making method. The method comprises the steps that S1, an iron-based high-temperature alloy material is pretreated; s2, preliminarily processing the iron-based high-temperature alloy material through millisecond laser assisted by water jet, and punching for the first time; s3, the transferred iron-based high-temperature alloy material is subjected to finish machining under femtosecond laser, and second-time punching is conducted in combination with ultrasonic vibration; and S4, after punching is completed, the iron-based high-temperature alloy material is cooled, and the quality and precision of machined holes are checked. According to the method, water jet is used for assisting millisecond laser to conduct preliminary punching, heat affected zones are reduced, a good hole shape foundation is laid, fine machining is conducted in combination with ultrasonic vibration assisted femtosecond laser, the roundness and surface quality of holes are further improved, and the machining precision is improved. The problems of poor hole roundness and low machining precision caused by high thermal conductivity of the iron-based high-temperature alloy in femtosecond laser drilling are effectively solved, and the machining quality and precision are remarkably improved.

The present invention relates to a lightweight flame-retardant photovoltaic backboard and a preparation method thereof, wherein the core layer is a modified flame-retardant foamed polystyrene board, the upper surface layer is a thermosetting or thermoplastic composite material with heat-conducting and fire-proof properties, the lower surface layer is a thermosetting or thermoplastic composite material, and the upper and lower surface layers and the core layer are bonded with an adhesive. The photovoltaic backboard of the present invention can achieve Class B fire protection for buildings; compared with fireproof aluminum plates, etc., it has the characteristics of good insulation, and the partial discharge voltage is as high as 2000V; it also has the characteristics of high strength, stable flame retardancy, and has good market application prospects.

The utility model discloses an anti-deformation MOCVD axis heating assembly, which comprises an electrode pin, an omega-shaped heating assembly, a crimping assembly and a fixing assembly, the electrode pin comprises a supporting part, a limiting bulge is integrally formed on the front side wall of the supporting part close to the upper end, the omega-shaped heating assembly is arranged on the supporting part, the crimping assembly is arranged on the omega-shaped heating assembly, and the fixing assembly is arranged on the omega-shaped heating assembly. The omega-shaped heating assembly comprises a heating sheet, annular mounting parts are integrally formed at two ends of the heating sheet, grooves are formed in the heating sheet and the annular mounting parts, the grooves are arranged in a manner of protruding towards the inner side of the heating sheet, and the crimping assembly is arranged on the outer side wall of the annular mounting part. According to the utility model, the groove is arranged in the middle of the heating sheet, the groove plays a role similar to a reinforcing rib, the deformation of the heating sheet is reduced, and compared with the original structure, the groove increases a small heat dissipation area, so that under the same condition, the heat dissipation is greater than that of the original structure, the temperature of the heating wire is low, and the high-temperature damage is smaller.

The invention discloses a preparation method of a laser bar heat sink sheet with high thermal conductivity and low thermal expansion. The preparation method comprises the following steps: cutting a sheet-shaped artificial diamond into a laser bar heat sink sheet core material in a laser cutting manner; plating metal chromium or titanium on the surface of the core material by adopting a magnetron sputtering method, and coating a layer of active brazing metal on the surface of the core material to form a core material inner mold; a graphite die provided with a plurality of through hole arrays is adopted, and each through hole is provided with an upper graphite pressure head and a lower graphite pressure head; combining and coating the core material inner mold with a matched metal shell and a matched cover plate, then placing the core material inner mold in the through hole, and assembling an upper graphite pressure head and a lower graphite pressure head to form a template assembly; carrying out vacuum hot pressing sintering on the template assembly to obtain a laser bar heat sink blank, and grinding and polishing to obtain a laser bar heat sink finished product; according to the obtained product, the flaky artificial diamond serves as a core, copper or copper alloy is compounded on the surface, the overall heat conductivity of the product is further improved, meanwhile, the proper thermal expansion coefficient is guaranteed, the machinability is good, and the method is suitable for large-scale production.

The utility model provides a heat dissipation shell of an LED lamp, and relates to the field of LED lamps. The LED lamp heat dissipation shell comprises a fixing plate, a shell mechanism is arranged on the surface of the fixing plate, the shell mechanism comprises a mounting plate and a connecting plate, a heat dissipation mechanism is arranged in the middle of the connecting plate, the heat dissipation mechanism comprises heat dissipation fan blades, a heat dissipation plate and a filter plate, and a sweeping mechanism is arranged on the surface of a fixing bin. The cleaning mechanism comprises a rotating shaft and bristles. According to the heat dissipation shell of the LED lamp, the lamp is installed on a wall through the installation plate, air inside the fixing bin and air outside the fixing bin are made to flow through the heat dissipation fan blades, the heat dissipation efficiency of the LED lamp is improved, circulating air is filtered through the filter plate, the LED lamp is subjected to heat dissipation and cooling through the heat dissipation plate and heat dissipation fins, the heat dissipation efficiency of the LED lamp is improved, and the heat dissipation efficiency of the LED lamp is improved. Bristles are driven to rotate through a rotating shaft to clean the filter plate, so that the filter plate is prevented from being blocked by dust, and the air filtering effect of the filter plate is improved.

The invention discloses high-frequency electrotome anti-adhesion gold and a preparation method thereof. The alloy comprises the following components in percentage by mass: 9.3-10.2% of Ni; 0.05 to 0.3 part of rare earth oxide; and the balance of Ag and inevitable impurities. The rare earth oxide comprises at least two of cerium oxide, yttrium oxide and lanthanum oxide. According to the high-frequency electrotome, due to the fact that the prepared alloy is doped with the rare earth oxide which is low in electron work function and high in melting point, the hot electron emission capacity of the high-frequency electrotome can be improved, the working temperature can be reduced, and the adhesion of tissues at the working tip can be effectively reduced. The silver-nickel alloy containing the rare earth oxide has the excellent mechanical property, the polishing property of the working tip of the high-frequency electrotome can be improved, the highly-polished needle tip can effectively reduce adhesion of tissue scorching substances in the cutting process, the adhered scorching substances can be wiped off more easily through clean gauze, and the operation is smoother and rapider.

The invention provides a bonding wafer scribing method and a chip die, and the bonding wafer comprises a first body material layer of a first wafer, a second body material layer of a second wafer, and a middle layer located between the first body material layer and the second body material layer. The method comprises the following steps: processing and penetrating through a first body material layer through a first wafer scribing process to generate a first groove; processing from the bottom surface of the first groove through a second wafer scribing process and penetrating through the intermediate layer to generate a second groove; and processing from the bottom surface of the second groove and penetrating through the second body material layer to obtain a bare chip. According to the technical scheme, the silicon material of the first body material layer of the first wafer is removed in advance, the middle layer containing the functional layer of the wafer is exposed, and then the middle layer is directly subjected to scribing cutting, so that damage to the middle layer, especially the functional layer, caused by the wafer scribing method is reduced.

The utility model relates to connector technical field especially relates to a micro floating type board -to-board connector structure, including the socket, the socket with the plug adopts vertically and perpendicularly and inserts the mode connection, realizes electric connection and mechanical cooperation, the socket's slot inside evenly interval setting has the contact terminal of elastic sheet along the length direction. Through the quick release mechanism that adopts the mounting seat and, the clamping block and the spring are composed, the socket can realize automatic locking with the mounting seat through the vertical insertion mode, in the insertion process, the circular clamping block is contracted under pressure, when aligning with the clamping hole on the socket, automatically pops out and clamps into the hole under the spring elastic force, completes the fixation, when replacing, can pull out only by exerting axial tension, need not to dismantle the welding or uses screwdriver etc.

The invention belongs to the technical field of vehicle heat dissipation, and particularly relates to a method and system for reducing vehicle heat damage. Comprising a first air duct and a second air duct which are additionally arranged at a front air inlet grille of a vehicle and respectively lead to an engine compartment heat damage part and a power battery; additional grating openings are additionally formed in the positions of a vehicle fog lamp and a vehicle wheel cover; the heat dissipation effect of the engine compartment heat damage part and the power battery is judged according to data returned by the temperature sensor; if the temperature of the engine compartment heat damage part and the temperature of the power battery continuously exceed the set threshold value, the vehicle is prompted to have the heat damage risk through a vehicle large screen, and when the vehicle enters the idling power generation mode, the engine compartment cover is prompted to be opened through the vehicle large screen, so that effective cooling is achieved. The vehicle engine compartment heat damage part and the power battery are subjected to targeted cooling, the heat convection effect is enhanced, and when the cooling effect of the heat convection mode is poor, a user can be prompted to open the engine cover for timely cooling.