255results about How to "Avoid heat damage" patented technology

The invention relates to the technical field of diamond hole drills, and discloses a diamond drilling tool with a chip removal function, the diamond drilling tool comprises a connecting cylinder, a drill bit is arranged at the bottom of the connecting cylinder, a chip removal mechanism is arranged, slurry is injected into a drill hole through a flow channel, the drill bit is cooled through the inrush slurry, and the chip removal function is achieved. The problems that due to the fact that a large amount of heat generated by friction between the drill bit and rock causes rapid temperature rise of the drill bit, thermal damage of diamond particles is caused, the cutting performance of the drill bit is reduced, and the service life of the drill bit is prolonged are solved, and meanwhile, due to the viscosity and fluidity of the slurry, rock debris can be suspended and brought out of holes along with continuous injection of the slurry; in this way, the hole bottom can be kept clean, a good condition is created for continuous drilling of the drill bit, a layer of lubricating mud film is formed between the drill bit and the hole wall, friction resistance between a drilling tool and the hole wall can be reduced, and energy consumption in the drilling process is reduced.

The utility model discloses a dustproof heat dissipation type LED mining lamp which comprises a miner lamp body, heat dissipation fins are arranged on the upper surface of the miner lamp body, a fixing box is fixedly connected to the outer surface of the miner lamp body, a motor is fixedly connected to the top inner wall of the fixing box, the output end of the motor is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with a power source. The outer surface of the rotating shaft is fixedly connected with a fan, and the inner surface of the fixing box is fixedly connected with an air pipe. Heat generated by the miner lamp body is effectively dissipated out in time through the cooling fins, the motor, the rotating shaft, the fan and the filter screen, so that the temperature of the miner lamp body in the using process is kept within a safe range, the miner lamp body is prevented from being damaged or exploded at a high temperature, the filter screen can also prevent external dust from entering the fixing box, and the miner lamp is convenient to use. And the miner lamp body can be effectively kept clean under the cooperation of the air pipe and the spray head, so that the stability of the lighting effect is ensured, and the safe operation of miners in a well is ensured.

The invention relates to aramid nanofiber-based carbonaceous aerogel and a preparation method thereof. The preparation method comprises the following steps: dispersing aramid fibers in an alkali solution, and washing with deionized water to obtain an aramid fiber dispersion liquid; performing vacuum filtration on the aramid fiber dispersion liquid, and performing freeze drying to obtain aramid fiber nanofiber aerogel; the aramid fiber nanofiber aerogel is subjected to carbonization treatment, and the aramid fiber nanofiber based carbonaceous aerogel is prepared. According to the preparation method disclosed by the invention, the highest evaporation rate of the obtained aramid nanofiber-based carbonaceous aerogel can reach 3.42 Kg / m < 2 > h by regulating and controlling the hydrolysis degree of the aramid fibers and combining vacuum suction filtration, and the aramid nanofiber-based carbonaceous aerogel has a good evaporation effect; in actual use, hydrophobic treatment is carried out on the upper surface of aerogel, and the defect that the photo-thermal evaporation effect of a product is reduced due to the fact that an open water layer is generated at a gas-liquid interface in the use process is effectively overcome.

The utility model discloses a forming tool for a variable cross-section composite material barrel. The forming tool comprises a first end cover, a second end cover, an upper die and a lower die, wherein the upper die and the lower die are provided with molded surfaces matched with the outer surface of the variable cross-section composite material barrel; and the composite core mold is provided with a molded surface matched with the inner surface of the variable cross-section composite material barrel, the composite core mold is located in a cavity defined by the upper mold, the lower mold, the first end cover and the second end cover, and a cavity used for forming the variable cross-section composite material barrel is defined by the upper mold, the lower mold and the composite core mold. The integral male die is made of low-melting-point alloy, thermal damage of high temperature to the composite barrel is avoided, secondary machining of the molded surface of the male die is not needed, the molded surface is smooth, the manufacturing period is short, and the comprehensive cost is low.

The utility model relates to the technical field of access control, and discloses a mounting seat for a face recognition access control machine, which comprises a protective shell, a ventilation component is arranged on the inner side of the protective shell, filter components are arranged inside the left side and the right side of the protective shell, and an electric push rod is fixedly connected inside the rear side of the protective shell. Rotating rods are rotationally connected to the left side and the right side of the top end of the electric push rod correspondingly, connecting rods are rotationally connected to the bottoms of the two rotating rods correspondingly, fixing blocks are fixedly connected to the front portions of one ends of the two connecting rods correspondingly, clamping plates are fixedly connected to the front sides of the two fixing blocks correspondingly, and rubber pads are slidably connected to the interiors of the opposite sides of the two clamping plates correspondingly. According to the utility model, the two clamping plates move oppositely to fix the access control machine in the protective shell, so that the access control machine is protected and prevented from being damaged, the filter plate can prevent dust from entering the protective shell, and the filter plate can be detached to be cleaned to keep the filtering effect.

The invention relates to the technical field of tool cladding, in particular to a high-speed multi-laser-head synchronous cladding device for tool machining. Comprising a chassis; the controller is mounted at the top of the chassis; the mounting column is connected to the middle of the top of the chassis; the first electric push rod is mounted in the mounting column; the lifting plate is connected to a telescopic rod of the first electric push rod; the first mounting frame is connected to the side surface of the lifting plate; the telescopic storage frame is mounted at the lower part of the first mounting frame; and the second electric push rods are symmetrically mounted at the upper part of the first mounting frame. Through cooperation of the telescopic storage frame, the flow dividing pipe and the fixing pipe, a proper amount of soldering paste can be smeared to the cutting edge of the tool, then a metal powder material is sprayed to the cutting edge of the tool through the metal powder spraying gun, and the metal powder material can be fixed to the cutting edge of the tool under the action of the soldering paste; and then the cutting edge of the cutter is subjected to laser cladding, so that the phenomenon that the metal powder material splashes can be prevented.

The present invention discloses a grinding device for processing a brake disc, which relates to the technical field of brake disc processing, and comprises a box body and a brake disc body. A placing table is rotatably installed on the top of the box body, and the brake disc body is installed on the top of the placing table. A fixed frame is fixedly installed on one side of the box body, and a mobile frame is arranged on the fixed frame. A first cross bar is arranged on one side of the mobile frame, and a grinding component for grinding the upper and lower surfaces of the brake disc body is arranged on the first cross bar. The grinding device for processing a brake disc realizes reciprocating and uniform grinding of the brake disc body by a surface grinding piece through a series of mechanical linkage structures driven by a driving motor. This mechanized grinding method is more accurate and stable than manual operation, and effectively improves the grinding efficiency and quality.

The invention relates to the technical field of smelting devices, and provides a direct-current submerged arc furnace for smelting, which comprises an operation platform, an electric furnace body, a low smoke hood type furnace cover, a guide rack, a rectifier transformer, a direct-current power supply, a cooling water system and a hydraulic station, and is characterized in that the low smoke hood type furnace cover is erected and mounted at the upper end of the electric furnace body; the low smoke hood type furnace cover is composed of a side wall and a top cover, a graphite electrode clamp is arranged above the low smoke hood type furnace cover, the graphite electrode clamp comprises a connecting shaft, the upper end of the connecting shaft is fixedly connected with the guide rack, and a sliding rod is vertically installed at the upper end of the connecting shaft. An original alternating-current submerged arc furnace holder system is omitted, the electric arc furnace type conductive cross arm stand column is adopted for lifting, lifting is stable, the lifting speed is adjustable and controllable, a traditional alternating-current transformer is designed into a rectifier transformer and a direct-current power source, main electric energy is provided, electric energy loss is reduced, and the effects of saving smelting cost and reducing power grid impact are achieved.

The quartz product degreasing and cleaning device comprises a pot body and a cover body arranged on the pot body, a containing cavity is formed in the pot body and comprises a containing space used for containing a quartz product and a supporting space located below the containing space, and a supporting piece used for supporting the quartz product is arranged in the supporting space; the supporting piece is provided with a plurality of supporting parts extending in a strip shape on the bottom wall of the containing cavity, and a collecting area used for collecting grease is formed among the multiple supporting parts. The pot body and the cover body are matched to provide a micro-pressure cleaning environment, the liquid medium in the pot body is heated to be boiled, the cleaning effect on the quartz product is improved, evaporation of the liquid medium is reduced, and diffusion of steam with dissolved lipid substances is reduced. And the supporting piece limits the displacement of the quartz product, so that the structural damage caused by collision between the quartz product and the pot bottom is reduced. Part of pollutants difficult to dissolve fall into the collecting area after being separated from the quartz product, so that the pollutants are prevented from being in contact with the quartz product again, and repeated pollution to the quartz product is avoided.

The invention relates to the technical field of OLED micro-displays, and discloses a temperature sensor calibration and external temperature compensation method for an OLED micro-display, and the method comprises a temperature compensation parameter storage module which is used for storing the temperature calibration data of the OLED micro-display through a one-time programmable memory OTP. According to the temperature sensor calibration and external temperature compensation method for the OLED micro-display, the actual working temperature Tactual is calculated by using the current temperature register value REG1 measured by the temperature sensor and factory calibration data T0 and REG0, the brightness change is compensated by adjusting the common voltage Vcom in real time, and the temperature of the OLED micro-display is compensated by combining a temperature compensation formula. The brightness of the display is accurately controlled by adjusting the electric field intensity, the Vcom is improved in a low-temperature environment to compensate brightness reduction, and the Vcom is reduced in a high-temperature environment to prevent excessive light emission or thermal damage, so that the problem of inconsistent display effects in long-term use is solved, and the user experience is improved.

The invention provides a method for preparing a Cu-Al2O3-EP mixed corrosion-resistant coating, which comprises the following steps: carrying out surface treatment on a base material, and sequentially grinding, polishing, cleaning, drying and sandblasting to obtain a base material to be sprayed; the preparation method comprises the following steps: mechanically mixing Cu powder, Al2O3 ceramic particles and epoxy resin EP powder to obtain cold spraying prefabricated powder; and the prefabricated powder is subjected to low-pressure cold spraying to a to-be-sprayed base material, after the coating is cooled and cured, polishing and correction are conducted, and the Cu-Al2O3-EP mixed corrosion-resistant coating is obtained. The prepared coating has excellent mechanical strength and corrosion resistance, has good thermal stability and toughness, and is suitable for various harsh application environments.

The invention relates to the technical field of radars, and discloses an active ventilation cooling system and method for a radar radome, the system comprises a top ventilation opening, the radome, an active ventilation cooling device and a fan controller, the top ventilation opening is located at the top end of the radome and is used for natural ventilation and auxiliary heat dissipation; the antenna housing is designed to be in a cavity opening type hemisphere shape so as to adapt to installation and operation of a radar antenna. The active ventilation cooling device is arranged at the bottom end of the antenna housing and is used for air intake and air exhaust; and the fan controller is used for controlling the start and stop of the active ventilation cooling device. The problem of poor heat dissipation of the radar radome in a high-temperature environment can be solved, and efficient heat dissipation, automatic control and all-weather work are realized.

The invention discloses a mounting structure and a mounting method of a Mini / Micro LED (Light Emitting Diode) chip. The mounting method comprises the following steps: arranging a plurality of LED chips on a PET film; the PET film and the substrate are attached in an aligned mode, and the bonding pads of the LED chips correspond to the bonding pads on the substrate one to one; a bonding pad on the substrate is provided with conductive particles, and each conductive particle comprises a metal conductive ball and a conductive adhesive coating the surface of the metal conductive ball; and hot-pressing the PET film, melting the conductive adhesive through heat conduction, and fixing the LED chip on the substrate through the conductive adhesive after cooling. According to the surface mounting method adopted in the technical scheme, the implementation temperature is the hot melting temperature of the conductive adhesive, mechanical connection between the LED chip and the substrate is further formed after the conductive adhesive is cured, and compared with traditional reflow soldering operation, the temperature is greatly reduced, so that thermal damage to the LED chip caused by high-temperature operation can be effectively prevented.

The application provides a PCB connector, which comprises a stabilizing piece, a first pin and a second pin. The stabilizing piece is provided with a mating plane, the first pin penetrates through the PCB to form a bottom soldering area, and the second pin elastically contacts and presses the PCB to form a top contact area. Through a unique spatial layering design, the soldering area and the contact area are arranged in a staggered manner in the vertical direction, synchronous operation of soldering fixation and elastic contact is realized, and this innovative double-area separation structure breaks through the process limitation of traditional connectors, simplifies the complex multi-step installation into one-time plug-in installation, not only saves the circuit board overturning step, but also avoids repeated positioning errors and thermal stress damage, greatly improves the assembly efficiency and ensures the connection reliability. The design is particularly suitable for high-density electronic assembly, and provides a new solution for the compact design of modern electronic equipment.

This utility model discloses a low-temperature high-frequency surgical scalpel, comprising: a handheld part; and a scalpel head body mounted on the handheld part. The handheld part is used to connect a power source, enabling the scalpel head body to perform high-frequency cutting. The scalpel head body includes a blade surface and a cutting edge, with the cutting edge surrounding the blade surface and having a beveled structure. The surface of the blade surface is coated with an insulating coating. This allows for low-temperature, high-efficiency cutting, reducing thermal damage to tissues.

The application provides a microcapsule, a composite fabric, a preparation method of the composite fabric and a summer quilt. The preparation method of the composite fabric comprises the following steps: A1, treating the top surface and the bottom surface of a moisture-permeable layer by using oxygen plasma; A2, adding microcapsules and a crosslinking agent into water to obtain a sticky liquid; coating the sticky liquid on the bottom surface and the top surface of the moisture-permeable layer in a dotted form, bonding the moisture-permeable layer and a moisture-removing and air-permeable layer by taking the top surface of the moisture-permeable layer as a bonding surface, bonding the moisture-permeable layer and a skin-friendly cool layer by taking the bottom surface of the moisture-permeable layer as a bonding surface, drying and hot pressing; the microcapsule comprises a core material and a shell covering the outside of the core material, the core material comprises a glue, and the glue is selected from glue A or glue B or a combination of the two, the glue A is a solvent-free moisture curing reaction type polyurethane hot melt adhesive, and the glue B is an acrylate with an epoxy group and / or a urethane group. The application can guarantee the moisture permeability and air permeability of the composite fabric.

This invention relates to an insulating oil and an oil-paper insulation system containing superhydrophobic nanoparticles, as well as their preparation method and application, belonging to the field of electrical equipment insulation technology. This invention provides an insulating oil containing superhydrophobic nanoparticles, wherein the superhydrophobic nanoparticles are silane-modified nanoparticles, and the nanoparticles include at least one of SiO2, TiO2, and h-BN; the insulating oil includes at least one of mineral insulating oil, synthetic insulating oil, and natural ester insulating oil. This invention achieves the superhydrophobicity of the nanoparticles and good compatibility with the oil phase through silane modification. Adding silane-modified nanoparticles to the insulating oil effectively reduces the water content of the insulating oil and optimizes the interfacial performance of the oil-paper. Combined with the low-temperature, high-efficiency, and uniform rapid impregnation process of this invention, the overall electrical performance and service life of the oil-paper insulation system are significantly improved.

The invention relates to a phase shift mask substrate and a dynamic magnetron sputtering preparation method thereof, a MoSi-based gradient film layer is continuously and dynamically deposited on the substrate, and the method comprises the following steps: carrying out first-stage deposition on the substrate by adopting a molybdenum-silicon alloy target so as to form a transition layer; carrying out second-stage deposition on the transition layer to form a main body functional layer through deposition; and third-stage deposition is carried out on the main body functional layer to form a surface modification layer through deposition, and the MoSi-based gradient film layer is obtained. The invention provides a one-step sputtering deposition method capable of dynamically and accurately regulating and controlling, so that the inherent contradiction between the performance and the stress of a single-layer uniform film is fundamentally solved, and the complexity and the uncertainty of a traditional multi-step process are avoided.

The application discloses a PDC drill bit suitable for continuous and rapid drilling of a limestone stratum and application thereof. The drill bit comprises a drill bit body, the drill bit body is provided with a blade wing, and the blade wing is provided with cutting teeth arranged in double lines. The double lines comprise a main line and a secondary line, the main line and the secondary line are located on the same crown line, the main line is located on an infeed contact surface of the blade wing, and the secondary line is located behind the main line. The cutting teeth comprise plane teeth and flow-passing special-shaped cutting teeth, the main line is provided with main line plane teeth, and the secondary line is provided with flow-passing special-shaped cutting teeth. The flow-passing special-shaped cutting teeth are provided with a through tooth flow passage, and the blade wing is provided with a blade wing flow passage corresponding to the tooth flow passage. The application adopts the same crown line double line tooth arrangement, greatly reduces the impact force on the cutting teeth, and avoids early damage of the cutting teeth. The application is provided with the tooth flow passage and the blade wing flow passage, improves the cooling effect of the cutting teeth, avoids thermal damage of the cutting teeth, prolongs the service life of the cutting teeth, and ensures that the drill bit has continuous aggressiveness.

The utility model discloses an auxiliary device for mobile phone scanning, which is characterized in that when the auxiliary device is used, an auxiliary scanning bracket assembly is clamped and fixed on the edge of a table through a clamping base plate, and a jacking and clamping assembly is arranged on the auxiliary scanning bracket assembly in a jacking and sliding manner; at the moment, the guide back sliding rod slides on a plate body on one side of the U-shaped support seat plate in a guiding and penetrating mode through the guide sliding hole, and the two ends of the jacking spring abut against the L-shaped jacking limiting plate and the plate body on one side of the U-shaped support seat plate correspondingly. A clamping installation structure of the scanning mobile phone is formed between the L-shaped jacking limiting plate and a top end clamping plate on the other side of the U-shaped support seat plate, in this way, clamping installation and disassembly of the scanning mobile phone are facilitated, when the scanning mobile phone is installed, a screen of the scanning mobile phone faces upwards, a camera faces downwards, and the scanning mobile phone can be conveniently clamped and disassembled by changing bending and stretching of the snake-shaped metal supporting rod. Therefore, the erection position of the U-shaped support seat plate during scanning is changed.

The utility model relates to the technical field of papermaking mesh production, and discloses a drying device for monofilament papermaking mesh production, which comprises a shell, a cavity is arranged in the middle of an inner cavity of the shell, a motor is fixedly mounted on the rear portion of the inner cavity of the cavity, and a rotating handle is fixedly connected onto an output shaft of the motor through a coupler. The front portion of the rotating handle is movably connected with a traction rod through a shaft, the bottom end of the traction rod is movably connected with a lifting rod through a shaft, the lifting rod is movably connected with the bottom of an inner cavity of the cavity in a sleeved mode, a connecting block is fixedly installed at the bottom end of the lifting rod, and the bottom of the connecting block is movably connected with a stretching roller through a shaft. The stretching roller is driven by the motor to stretch and shake the monofilament papermaking mesh, material shrinkage stress is counteracted, mesh hole blockage and deformation caused by monofilament winding or adhesion are avoided, surface roughness or protrusions are reduced through mesh piece tensioning, the flatness requirement is met, water in the material is migrated through shaking, the water content is reduced, and therefore the needed drying time is shortened. The device working efficiency is improved.

The utility model relates to big pipe frame processing technical field, and specifically is a kind of oil ship big pipe frame anti-toppling tool, including big pipe frame base material, further including clamping plate, two clamping plates are symmetrically installed, and big pipe frame base material is clamped and fixed, inner gasket is fixedly arranged in the inner side of clamping plate, the friction of clamping plate and big pipe frame base material is increased, upper fixed pipe, lower fixed pipe are fixedly arranged in the diagonal outer side of clamping plate, and the upper fixed pipe of same side, lower fixed pipe middle part are slidably inserted with fixed pin, and fixed pin is used to connect two clamping plates, the utility model is fixedly connected by two clamping plates symmetrically clamping big pipe frame base material, and two clamping plates are fixedly connected using fixed pin, form rigid fixing to big pipe frame, prevent big pipe frame from toppling and hurting in the welding process, improve the operation safety, do not need to carry out welding and polishing operation on big pipe frame base material, not only avoid the thermal damage to big pipe frame base material, but also save the process of welding temporary tool and subsequent grinding.

This invention relates to the technical field of oil and gas recovery, and discloses an oil and gas recovery adsorbent regeneration system based on the synergy of thermal desorption and vacuum desorption. The system includes an adsorption tank, a vacuum pump, a heating module, an intelligent control unit, and a water removal module. The intelligent control unit is connected to the adsorption tank, the vacuum pump, and the heating module. The adsorption tank contains adsorbent, and a set vacuum degree is applied to the adsorption tank using the vacuum pump. The heating module heats the adsorption tank using steam or hot nitrogen in addition to vacuum desorption. Vacuum desorption reduces the surface pressure of the adsorbent, lowering the boiling point of the adsorbate. Combined with the high-temperature desorption effect of thermal desorption, this significantly enhances desorption efficiency while reducing energy consumption. The intelligent control unit adjusts the synergistic parameters of temperature and vacuum degree in real time. The system integrates adsorption, desorption, and water removal functions, supports continuous cyclic operation, increases the stability of oil and gas recovery rate, and eliminates the need for manual intervention in the regeneration process.

The invention relates to a solid fuel combustion characteristic test technology, and aims to provide a focusing single particle suspension variable atmosphere ignition combustion experiment device and method. A second microporous plate and a feed hopper are arranged at the top of a combustion chamber main body of the device, and a first microporous plate and a gas buffer cavity are arranged at the bottom; the two laser emitters are arranged in an included angle shape, and the energy of a single laser beam is lower than a fuel particle ignition threshold value; the two paths of laser intersect in the central area of the cavity to form a space energy focus, and the superposed energy of the two beams of laser can be absorbed at the position to reach an ignition threshold value; and light paths of diagnosis equipment in the optical acquisition module are intersected in a focus area. According to the invention, through a strategy of airflow disturbance and microwell plate blocking, particles completely move in airflow; the ignition behavior has spatial selectivity, the success rate is high and controllable, and the research is closer to the actual application scene. Through the design of single-particle fixed-point triggering, the system complexity and the control difficulty can be reduced, and the operation stability and the experiment repeatability can be improved.

This utility model discloses a system for combined denitrification under full-load conditions in a circulating fluidized bed boiler, comprising a wide-temperature-range SNCR denitrification module and a flue gas circulation module. The injectors in the wide-temperature-range SNCR denitrification module are arranged in the inlet flue of the high-temperature separator, the inlet flue of the high-temperature superheater, or the boiler furnace. The flue gas circulation module includes a flue gas circulation header and flue gas circulation branch pipes arranged along the flue gas flow direction. The flue gas circulation header connects to the flue gas circulation branch pipes, which are connected to the air preheater via a primary air fan. The inlet of the flue gas circulation header connects to the outlet of the induced draft fan. This utility model extends the lower limit of the conventional 800~1050℃ temperature window to 650℃. It uses ethanol as a low-temperature additive, resulting in relatively low denitrification costs and convenient ethanol addition and removal. Compared with existing SCR denitrification technology, the system is simpler and more economical. It does not require boiler modification, nor does it require additional denitrification reactors and catalysts, making the system relatively simple and facilitating switching between low-temperature denitrification mode and conventional denitrification mode.

The invention provides a method for preparing a Ti-Al2O3-PVDF (Polyvinylidene Fluoride) mixed seawater corrosion-resistant coating by low-pressure cold spraying, which comprises the following steps: carrying out surface treatment on a base material, and sequentially grinding, polishing, cleaning, drying and sandblasting to obtain a base material to be sprayed; the preparation method comprises the following steps: mechanically mixing Ti powder, Al2O3 ceramic particles and polyvinylidene fluoride (PVDF) powder to obtain cold spraying prefabricated powder; and the cold spraying prefabricated powder is subjected to low-pressure cold spraying to a to-be-sprayed base material, after the coating is cooled and cured, polishing and correction are conducted, and the Ti-Al2O3-PVDF mixed seawater corrosion resistant coating is obtained. The prepared coating not only has excellent mechanical strength and corrosion resistance, but also has good thermal stability and toughness, is suitable for various harsh application environments, especially can be applied to ocean engineering environments, and can resist seawater scouring and corrosion.

The present invention relates to a battery pack comprising: a plurality of battery modules, each battery module comprising a plurality of battery cells; a pack case provided to accommodate the plurality of battery modules; an exhaust device provided in the pack case and configured to exhaust gas generated in the battery modules to the outside of the pack case; and an inflator configured to discharge the carbon dioxide stored therein toward the exhaust device.

The utility model relates to the field of optics, and discloses a wafer array type multi-wire cutting device which comprises a machine body, and a roller is arranged at the front end of the machine body. The mortar spraying assembly comprises a rectangular box and a connecting arm, the bottom end of the rectangular box is open, and a first spraying unit and two sets of second spraying units are arranged in a cavity of the rectangular box; and a position adjusting unit is arranged between the two second spraying units and the rectangular box and comprises a servo motor, a rotating shaft and a moving seat. The position adjusting unit is arranged between the two sets of second spraying units and the rectangular box, so that the positions between the two sets of second spraying units and the rectangular box can be adjusted, the positions of the two sets of second spraying units are adjusted according to the size of an actual machined part, and it is guaranteed that mortar is reasonably and evenly distributed on the workpiece in the cutting process; and the stability of cutting quality is ensured.

The utility model discloses an inflatable pulp board accessory reinforcing device belongs to inflatable pulp board technical field, this inflatable pulp board accessory reinforcing device, including processing table and the hot -blast rifle of installing at processing table top, the front end of first support is connected with rotating mechanism, the front end mounting of second support has drive mechanism, the front end of second support is connected with reciprocating mechanism, the bottom of reciprocating mechanism is connected with the drum, drive mechanism is used for driving reciprocating mechanism movement, the utility model discloses through rotating mechanism adjustment hot -blast rifle muzzle and the angle and distance between processing table, ensure that hot -blast concentrated effect is in the bonding area, promote heating efficiency and avoid material overheating damage, through drive mechanism with stable mechanical power replaces manual hot -blast rifle and scraper's physical labor, reduce the worker's fatigue while guaranteeing processing rhythm consistency, through reciprocating mechanism drive drum reciprocating sweep, automatically exclude air bubble and compact bonding layer, promote scraping pressure degree and the stability of frequency.

The application provides a method for analyzing a 4H-SiC femtosecond laser processing optimal energy interval, and belongs to the technical field of engineering optics based on computer data processing. First, the evolution of electron density, lattice temperature and electron temperature under irradiation is simulated by constructing a three-dimensional model and an electron density cumulative rate equation and a double-temperature model, so that the lattice modification threshold and the ablation threshold are determined. Then, a plurality of experimental data points are selected in the interval for single-pulse laser processing, the surface morphology, removal depth and removal radius of each data point are counted by using conventional characterization methods, and the accuracy and non-thermal removal threshold of the model are determined by observing the number of surface spatter particles and the flux calculation of the morphology edge. Further, the optimal structure modification energy interval, cold processing interval and hot ablation processing interval of 4H-SiC are determined. The application uses fewer sample damage test times, improves the sample utilization rate, shortens the research period, and accelerates the flux screening of the optimal laser processing.