32results about How to "Relieve deformation" patented technology

The invention relates to the technical field of semiconductor packaging, in particular to a hybrid packaging structure and method of a photoelectric chip and a testing method and system of the photoelectric chip. The packaging structure comprises a first substrate; a reinforced connecting layer is arranged on the upper surface of the first substrate; the reinforced connection layer comprises a silicon adapter plate, a first reinforced layer and a second reinforced layer are arranged on the silicon adapter plate, and an electronic chip is arranged on the upper surface of the second reinforced layer; the third reinforcing layer at least can cover the exposed surface area of the first reinforcing layer, the exposed surface area of the second reinforcing layer and the side surface of the electronic chip; and a photon chip is arranged on the upper surface of the third reinforcing layer corresponding to the first reinforcing layer. The hybrid packaging scheme realized based on the reinforced connection layer can be applied to wafer-level batch processing, so that the compatibility with an advanced packaging process of an electronic chip and large-scale mass production can be realized.

The invention discloses a laser bending process and a laser bending device, and belongs to the technical field of laser machining, and the laser bending process comprises the steps that a to-be-bent area in a to-be-bent part is subjected to laser tempering treatment to obtain a tempered to-be-bent part, and the tempered to-be-bent part is subjected to bending treatment to obtain a bent part. Wherein in the laser tempering treatment and bending treatment process, an external magnetic field is applied to the to-be-bent part, the direction of the external magnetic field is parallel to the plane where the to-be-bent part is located, and at least part of the external magnetic field penetrates through the to-be-bent part. The electromagnetic force effect can be applied to the to-be-bent area subjected to laser tempering treatment through the external magnetic field, grains are refined, energy distribution in the laser tempering treatment process can be adjusted, the tempering treatment stability is guaranteed, the bending stress is reduced, the conditions of deformation of a bent part and coarse grains are relieved, and the quality of the bent part is improved.

The present invention discloses a dustproof structure for a MEMS device and a MEMS microphone packaging structure. The dustproof structure for a MEMS device comprises a mesh membrane and a carrier. The mesh membrane has a fixed connection area, a buffer area and a sound-transmitting area. The buffer area surrounds the sound-transmitting area, the fixed connection area surrounds the buffer area, the fixed connection area is located at the edge of the mesh membrane, and a through hole penetrating the mesh membrane is provided on the buffer area; the carrier has a through opening, the carrier is connected to one side of the fixed connection area, and the opening corresponds to the positions of the buffer area and the sound-transmitting area.

The present invention relates to a spliced ​​chamfering device, comprising a base and a plurality of thin tooth plates; all of the thin tooth plates are fixedly spliced ​​on the side wall of the lower part of the base to form a conical chamfering body, and the lower parts of all of the thin tooth plates extend to the bottom of the base, and the lower parts of all of the thin tooth plates are pressed against each other on the side close to the base, and a drainage groove connecting the water hole inside the base is formed between two adjacent thin tooth plates. The beneficial effects of the present invention are as follows: the chamfering device is spliced ​​by a plurality of thin tooth plates, and a drainage groove is formed between each two adjacent thin tooth plates, so that the working surface of the chamfering device is densely distributed with drainage grooves, and the cooling water discharged outward from the drainage groove can cover the entire working surface, thereby improving the working efficiency and extending the service life of the chamfering device; at the same time, the deformation rates of the radial points are relatively close, the deformation problem is alleviated, and the service life of the chamfering device is extended.

The utility model provides a partition plate for distinguishing temperature zones, and belongs to the technical field of partition plates. Comprising a partition plate body and a partition plate body, the plurality of first bent plates are arranged in the partition plate body and are used for absorbing the deformation force of the partition plate; the first supporting ribs are arranged between the partition plate body and the first bent plate, the two side faces of the first supporting ribs are connected with the partition plate body and the first bent plate correspondingly, and the first supporting ribs are used for supporting the first bent plate; and the plurality of second bent plates are arranged in the partition plate body and are used for absorbing the pressure of the partition plate. The first bending plate and the second bending plate are arranged to form a rhombus, and are matched with the first supporting rib and the second supporting rib, so that the stability and the bearing capacity of the interior of the partition plate can be enhanced, and deformation of the partition plate is relieved.

The utility model discloses a double-layer heat preservation food material and meat material plastic barrel, which adopts a barrel body with a double-layer plastic structure to improve heat preservation performance, effectively enables food materials to keep required temperature balance, has a better effect compared with a traditional stainless steel barrel body, and is not easy to hide dirt and carry dirt when being made of food-grade plastic materials and integrally formed. The plastic surface is easier to clean; plastic materials are diversified in color, barrel bodies of different colors can be manufactured, color diversified matched production is rapidly achieved, color fading is avoided, and needed food materials can be scientifically distributed and distinguished more easily. The integrally-formed plastic can effectively relieve deformation of the barrel body caused by collision in the using process, and compared with traditional stainless steel, the plastic barrel is more durable.

The present invention relates to the technical field of automobile parts, and proposes a heat-resistant rubber hose for an engine, comprising a pipe fitting, the pipe fitting having a pipe mouth; a first connecting piece sleeved on the pipe mouth, the first connecting piece having a first inner inserting part and a first outer sleeve, the first inner inserting part and the first outer sleeve respectively abutting against the inner wall and the outer wall of the pipe mouth; a first outer slider slidably arranged on the first outer sleeve, and the sliding direction is along the axial direction of the pipe mouth, and the first outer slider has a first pressing part, and the first pressing part slidably abuts against the outer wall of the pipe fitting. Through the above technical solution, the problem that the rubber hose in the prior art may be deformed or fall off when the temperature changes and bumps.

The invention relates to the technical field of semiconductor equipment, and discloses a warped wafer reflow heating device, comprising a heating upper cover, a spring pressure block structure, and a lower cavity structure. A first pressure ring and a second pressure ring are arranged at the bottom of the heating upper cover, the first pressure ring is located on the inner side of the second pressure ring, and the bottom of the first pressure ring and the second pressure ring are both provided with spring pressure block structures, the spring pressure block structure is used to squeeze the warped wafer, the spring pressure block structure comprises an elastic clamping component, an overload buffer component, a loading component and a guide pin, the guide pins are respectively located in the first pressure ring and the second pressure ring, and the elastic clamping component is located at the bottom of the guide pin inner cavity; when encountering a wafer with a large degree of warping, the elastic clamping component is compressed to a certain extent, in order to prevent the continuous downward pressure of the heating upper cover, resulting in excessive elastic potential energy condensed by the elastic clamping component, thereby causing damage to the warped wafer, to avoid that when the wafer is severely deformed, the wafer will be crushed during the sealing process of the upper and lower covers, which greatly affects the yield.

The invention discloses an electric heating structure and an air conditioner applying the same, the electric heating structure is applied to an evaporator, the evaporator is provided with an open space formed by multiple bends, the electric heating structure comprises a heating body and a heat dissipation unit, the shape of the heating body is matched with that of the evaporator, and the heating body is located in the open space; the heat dissipation unit is arranged on the heating body so that heat generated by the heating body can be evenly transmitted to the evaporator. According to the electric heating structure, due to the fact that the heating body is matched with the evaporator and the heat dissipation unit is arranged on the heating body, after the heating body is powered on, heat is dissipated to the periphery through the heat dissipation unit, and compared with a traditional heating body, the distribution range of the heating body is wide, and the heating body is provided with the heat dissipation unit; therefore, the heating effect can be greatly improved, the evaporator is prevented from frosting, and the technical problem that the heat exchange efficiency is affected due to fin deformation caused by the temperature difference of the evaporator is solved.

This utility model relates to the field of heating appliances and discloses a heating module suitable for liquid heating equipment, including a heating element and a cover plate. A heating layer made of thick-film heating material is provided on one side of the heating element; a flow guide groove is provided on the other side of the heating element. The cover plate and the flow guide groove form a medium channel that allows the working medium to flow. This utility model integrates the heating plate and the water circuit board into a single structure, solving the problem of poor consistency caused by deformation due to the independent structures of the heating plate and water circuit board in the prior art. Furthermore, the sidewalls of the flow guide groove form reinforcing ribs, enhancing the structural strength of the heating element, improving its resistance to deformation, and increasing the heating controllability of the heating module. Simultaneously, the working medium flows in a designated direction to achieve gradual heating of the working medium, improving the temperature control accuracy of the heating module. This utility model also provides a liquid heating device.

The invention discloses a high-pressure-resistant composite stainless steel pipe for aerospace and machining equipment thereof, a spaceflight steel pipe body comprises a lining layer, a wear-resistant layer, a main pressure-bearing layer, a buffer layer, a protective layer, connecting threaded holes, gaskets and connecting bolts, the wear-resistant layer is mounted on the outer side of the lining layer, and the main pressure-bearing layer is mounted on the outer side of the wear-resistant layer; the buffer layer is mounted on the outer side of the main pressure-bearing layer, and the protective layer is mounted on the outer side of the buffer layer; the connecting threaded holes are formed in the lining layer, the wear-resistant layer, the main pressure-bearing layer, the buffer layer and the protective layer; the connecting bolts are engaged in the connecting threaded holes through threads, and the connecting bolts are arranged between the protective layer and the connecting bolts. Through the innovative multi-layer material design and the precise assembly process, the performance bottleneck and the assembly problem of a traditional pipeline material are effectively solved, the comprehensive performance and reliability of the pipeline are improved, and the machining efficiency is remarkably improved.

The present invention belongs to the technical field of potassium ion battery materials, and relates to a hollow carbon @ zinc sulfide negative electrode material for potassium ion batteries, and a preparation method and application thereof. The present invention uses a tannic acid methanol solution to selectively etch ZIF-8 nanoparticles to obtain core-shell-zeolite imidazole framework @ coordination polymer nanoparticles, and then uses thioacetamide vulcanization to obtain hollow-tannic acid @ zinc sulfide nanoparticles, and finally obtains a hollow carbon @ zinc sulfide negative electrode material by heat treatment under an inert atmosphere, which is then applied to potassium ion batteries, and can effectively improve the specific capacity, rate performance and cycle performance of potassium ion batteries under normal temperature and high temperature conditions, and the material preparation method does not need to add a template, the process is simple, the reaction conditions are mild, and the shell thickness can be accurately controlled.

The invention relates to the technical field of building construction, and discloses a sliding support node at an outer wall body cantilever beam, which is arranged on an outer wall and comprises a cantilever beam, a sliding support node and a sliding support node, the bracket is formed by protruding part of the wall body of the outer wall, and the bracket is located below the second beam; the sliding assembly is arranged between the bracket and the cantilever beam, so that the cantilever beam is arranged on the bracket in a sliding manner; the sliding assembly comprises a first plate fixed to the bracket; the lubricating plate is arranged on the first plate; the second plate is fixed with the second beam; the second plate is arranged on the lubricating plate in a pressing mode, and the lubricating plate can slide relative to the first plate and the second plate. The at least two side plates are located on the two opposite sides of the second beam in the first direction respectively. The sliding support node at the cantilever beam of the outer wall body has high supporting performance, the bracket support is directly arranged on the outer wall body, the whole weight of the cantilever beam can be well borne, it is guaranteed that the supporting point position of the cantilever beam is stable, the side plate can effectively prevent the cantilever beam from being separated from the support when the cantilever beam is subjected to external force, and building safety is guaranteed.

This utility model discloses a high-temperature resistant fuel nozzle for aero-engines, relating to the field of fuel nozzle technology. It includes a mounting ring and an air guide assembly. The top of the air guide assembly is fixedly connected to the bottom of the mounting ring, and a cooling assembly is fixedly connected to the inner wall of the air guide assembly. The cooling assembly includes an inner air tube, and a honeycomb plate is fixedly connected to the inner wall of the inner air tube. The fuel nozzle is fixed to the outer wall of the inner air tube by a spiral ring, guiding the cooling airflow to form a spiral flow, increasing the contact area and turbulence intensity between the airflow and the inner air tube, improving heat exchange efficiency, reducing the fuel passage temperature, and preventing fuel vaporization at high temperatures from affecting injection performance. The honeycomb plate is arranged in a ring array on the inner wall of the inner air tube, dividing the cooling airflow into multiple fine streams that evenly cover the inner wall of the inner air tube, avoiding localized overheating. This fuel nozzle achieves the purpose of a high-temperature resistant fuel nozzle for aero-engines.

The utility model relates to the technical field of new energy batteries, in particular to a battery cell assembly structure, which comprises a hard shell, a sealing cover is hermetically mounted on the hard shell, a battery cell mounting cavity for mounting a battery cell is arranged in the hard shell, a first protection component is arranged in the hard shell, and a second protection component is arranged on the inner wall of the battery cell mounting cavity. According to the utility model, the second protection assembly is matched with the shape of the end part of the battery cell, so that the stress on the pole core is more uniform, and the phenomenon that the pole core is extruded by a hard shell to cause polarization difference after the battery cell is circulated due to the increase of the thickness of a pole piece, so that the performance degradation and the safety risk of the battery cell are further avoided; and the limitation of the number of layers of the winding pole cores on the capacity of the battery core is broken through, and a plurality of winding pole cores can be assembled in the technical scheme, so that the capacity of the battery core is ensured, and the problems and potential risks existing in a high-capacity winding pole core are avoided.

The invention relates to the field of metal material plating, in particular to a battery electrode electrochemical enhancement method. According to the method, an electrode structure is prepared by adopting a magnetron sputtering process, an alternating structure of graphene and silicon is obtained, the conductivity and the cycling stability of the electrode can be improved due to the fact that the graphene has a huge surface area and is better in bonding performance with a current collector and a silicon layer, and the graphene molecular structure is a three-dimensional hollow structure and has a large elastic modulus, so that the conductivity and the cycling stability of the electrode are improved. And cyclic stress deformation generated by the silicon layer in the cyclic charging and discharging process can be absorbed, the sputtering power is gradually changed when a multi-layer structure is prepared, and the tendency of interlayer cracking can be avoided while deformation can be further relieved in a transition gradient mode. Cu is doped when the Si layer is prepared, Cu atoms cause lattice distortion in the Si layer, enough dislocation, vacancy and other defects are generated, a buffer space is provided for subsequent deformation, and the conductivity of the electrode is further improved.

The utility model provides a mainboard fixing device and an automobile host, and relates to the technical field of automobiles, and the mainboard fixing device comprises a buckle and a positioning assembly which are arranged on a shell; the buckle is arranged on the edge of the main board, the buckle extrudes the edge of the main board in the installation process of the main board, and when the main board is installed, the buckle is connected with the edge of the main board in a clamped mode so that the main board can be fixed; the positioning assembly is connected with the main board and used for fixing the position of the main board, so that during installation, the main board only needs to be clamped into the buckle, then the main board is positioned through the positioning assembly, screws do not need to be used, and meanwhile the main board is not prone to deformation after being clamped. The technical problems that in the prior art, a main board is prone to deformation during installation, the installation technology is tedious, and cost is increased due to the fact that screws are used are solved, and the technical effects that the main board is not prone to deformation during installation, the installation process is simple, screws are not needed during installation, and therefore cost is saved are achieved.

The utility model relates to the technical field of steering systems, in particular to an assembly structure for releasing a clearance between a shaft and a bearing. An assembling structure for releasing a clearance between a shaft and a bearing comprises the bearing and a rotating shaft, the rotating shaft is sleeved with the bearing, the rotating shaft is in interference fit with the bearing, and the assembling structure is characterized in that a groove structure is arranged at the matched connection position of the bearing and the rotating shaft; and the groove structure is arranged on the outer circumferential surface of the rotating shaft or the outer circumferential surface of the inner wheel of the bearing. Compared with the prior art, the assembling structure for releasing the clearance between the shaft and the bearing is provided, and the mode of grooving the rotating shaft or the bearing inner wheel at the position matched with the bearing inner wheel is adopted, so that the deformation of the bearing inner wheel caused by interference fit is relieved, and the friction force caused by further compression of the bearing clearance due to the deformation of the inner wheel is relieved.

The present invention relates to the field of metal material plating, and in particular to a method for electrochemical enhancement of battery electrodes. This method uses a magnetron sputtering process to prepare an electrode structure, and obtains an alternating structure of graphene and silicon. Since the graphene surface area is huge, the bonding with the current collector and the silicon layer is better, and the conductivity and cycle stability of the electrode can be improved. Moreover, since the graphene molecular structure is a three-dimensional hollow structure, it has a large elastic modulus and can absorb the cyclic stress deformation generated by the silicon layer during the cyclic charge and discharge process. When preparing a multilayer structure, the sputtering power is gradually changed, and the transition gradient method can further alleviate the deformation while avoiding the tendency of interlayer cracking. When the Si layer is doped with Cu, the Cu atoms cause lattice distortion inside the Si silicon layer, generating sufficient defects such as dislocations and vacancies, providing a buffer space for subsequent deformation, and further improving the conductivity of the electrode.

The utility model relates to the technical field of battery production equipment, in particular to a stirring device. The utility model provides a stirring device. The stirring device comprises a stirring shell, a driving mechanism, a stirring mechanism, a first rotating shaft and a second rotating shaft, the stirring shell comprises a first wall and a second wall which are arranged at an interval, and the stirring mechanism is arranged between the first wall and the second wall; the first rotating shaft is rotationally connected with the first wall, one end of the first rotating shaft extends out of the stirring shell and is in transmission connection with the driving mechanism, and the other end of the first rotating shaft extends into the stirring shell and is connected with the first end of the stirring mechanism; the second rotating shaft is rotationally connected with the second wall, and one end of the second rotating shaft extends into the stirring shell and is connected with the second end of the stirring mechanism; and the axis of the first rotating shaft and the axis of the second rotating shaft are collinear. The problem that an existing stirring shaft is prone to deformation can be solved, the problem that an existing stirring paddle is prone to deformation and scratches the side wall of the stirring device is relieved, and the slurry stirring effect can be improved.

The invention discloses a novel cable outlet structure on a locking device and an assembling method, and the structure comprises a PCBA board which is provided with an external connector. The shell is used for accommodating the PCBA board; the glue leakage prevention foam is arranged between the connector on the PCBA board and the bottom shell; and the connector throwing line penetrates through the upper cover and is connected with a connector on the PCBA board. The connector module is externally arranged, so that the problems of low assembly efficiency and poor waterproof performance caused by a built-in connector in a traditional mode are solved, particularly, during long-term use, the risk of water leakage can be effectively prevented, and due to the application of the leakage-proof glue foam and the close contact structure of the leakage-proof glue foam and the bottom shell, the sealing performance of the device is further improved, and the service life of the device is prolonged. The stable performance of the device in a severe environment is ensured, meanwhile, the waterproof and dustproof effects are improved through the processing mode of the pouring sealant, the assembly process is simplified, automatic operation can be achieved, and the production efficiency is remarkably improved.

A moving device of horizontal machining center, including mounting seat, which is provided with mounting cavity through both ends, sliding seat, which is slidingly connected to mounting cavity, and one end of sliding seat is provided with spindle connecting seat for connecting spindle in the direction of connecting line of both ends of mounting cavity, linear motor, whose stator is connected to mounting seat, and whose mover is arranged along vertical direction and connected to sliding seat, balance cylinder, which is arranged along vertical direction, connected to the surface of mounting seat far from spindle connecting seat, and whose piston rod is connected to the other end of sliding seat, and controller for electrically connecting linear motor and balance cylinder. Compared with prior art, the moving device of the application has high moving speed block and machining efficiency, and is stable in working condition and safe in use.

The utility model provides a vacuum joint belongs to vacuum system technical field. Including the joint main part, the top edge of joint main part is fixed with horizontal butt joint disc, the upper end face of butt joint disc surrounds the joint main part and is equipped with the mounting groove of concentricity, the mounting groove is inlayed with sealing washer, and the mounting groove inner bottom surface elasticity is equipped with a plurality of vertical top post, top post will sealing washer elastic resistance export mounting groove half thickness outside. Top post sets up four, and evenly distributes in mounting groove inner bottom surface. The mounting groove inner bottom surface is equipped with the insertion slot that supplies top post lower end vertical insertion, and the spring that connects top post is fixed in the insertion slot bottom. The utility model discloses, not only convenient for replacing sealing washer, easy to maintain, and can prolong the service life of sealing washer, and the whole use effect is good.

The invention discloses a core-shell structure mineralizer modification-based photocuring 3D printing aluminum-based ceramic core and a preparation method thereof. The aluminum-based ceramic core comprises the following substances in percentage by weight: 65-75% of aluminum-based ceramic powder, 5-15% of a core-shell structure mineralizer component and 15-25% of a photosensitive resin component. The preparation method comprises the following steps: preparing aluminum-based ceramic core slurry, and vacuumizing the aluminum-based ceramic core slurry; injecting the aluminum-based ceramic core slurry into a trough of 3D printing equipment, and printing an aluminum-based ceramic core blank; the aluminum-based ceramic core green body is subjected to ultrasonic cleaning and drying treatment; and the aluminum-based ceramic core blank is subjected to degreasing treatment and sintering treatment, and the photocuring 3D printing aluminum-based ceramic core based on core-shell structure mineralizer modification is prepared. According to the method, the sintering temperature of the 3D printing aluminum-based ceramic core blank can be effectively adjusted, generation of interlayer cracks in the degreasing and sintering process is reduced, and the aluminum-based ceramic core with excellent comprehensive performance is obtained.

The utility model relates to a connection reinforcing structure for a front panel and a tool box of an electric vehicle, which comprises the front panel, the tool box and a reinforcing piece, the reinforcing piece is made of plastic, the front panel is detachably connected with the tool box, the reinforcing piece is arranged between the front panel and the tool box, and the reinforcing piece is respectively connected with the front panel and the tool box. According to the connection reinforcing structure of the front panel and the tool box of the electric vehicle, the reinforcing piece made of the plastic material is arranged between the front panel and the tool box, so that the supporting force is increased, certain buffering is provided between the front panel and the tool box, and deformation of the front panel and the tool box is relieved. Due to the fact that the reinforcing piece is arranged inside, the front panel is not exposed to the sun, the physical performance of the front panel is better than that of an external front panel and a tool box, and high toughness and impact resistance can still be provided in the long-term using process.

The application provides a connecting assembly, a camera module and an electronic device. The connecting assembly comprises a first connecting piece and a second connecting piece. The first connecting piece and the second connecting piece are metal pieces, and surfaces of the first connecting piece and the second connecting piece are provided with insulating layers. One side of the first connecting piece close to the second connecting piece is provided with a first protruding part and a second protruding part. In a first direction, a size of the first protruding part is greater than a size of the second protruding part. The first direction is perpendicular to a circumferential direction of the first connecting piece. One side of the second connecting piece close to the first connecting piece is provided with a first recessed part and a second recessed part. In the first direction, a size of the first recessed part is greater than or equal to a size of the second recessed part. The first protruding part and the second protruding part are accommodated in the first recessed part and the second recessed part respectively. The first protruding part and the first recessed part have a gap in the first direction. The connecting assembly, the camera module and the electronic device provided by the application can make the connecting assembly have structural stability and electrical connection stability.

The invention discloses a reinforced combination structure of a load-bearing crossbeam and a load-bearing column of a large-span beam of a factory building, comprising a column; a crossbeam; and a reinforcement member, on which sliding components are symmetrically arranged, and the sliding components include rollers arranged in a linear array to resist rolling in the side grooves of the I-beam portion, and the reinforcement member is also provided with a supporting foot. The reinforced combination structure of a load-bearing crossbeam and a load-bearing column of a large-span beam of a factory building provided by the invention uses a reinforcement member and a supporting foot on the reinforcement member to connect to the column to fix the peripheral side of the end of the crossbeam, thereby alleviating the problem that the crossbeam is bent and the end is warped to cause deformation of the column, and can improve the bending capacity of the crossbeam and reduce damage to the column. Secondly, the reinforcement of the crossbeam by the reinforcement member does not require drilling holes in the web of the crossbeam, thereby improving the compressive resistance of the crossbeam. The reinforcement member can also be used to slide on the crossbeam to cause the end of the crossbeam to vibrate, thereby solving the problem that the crossbeam is stuck due to friction during the hoisting process and is inconvenient to install.

The invention relates to low-temperature impact-resistant alloy steel and a preparation method thereof, and belongs to the technical field of alloy steel preparation. Cr powder, V powder, Nb powder and other metal powder are mixed to regulate and control element components in a steel matrix, the element components act together, growth of austenite grains is hindered in the matrix machining process, the precipitation strengthening effect is achieved, and the low-temperature impact-resistant alloy steel is obtained. The strength and toughness of the steel are improved. In the casting process, the low-temperature impact performance of the cast steel can be effectively improved by controlling factors such as the casting temperature, the grouting rate and the forced cooling rate. The surface stress of the steel is relieved by matching with a treatment method of dipping in molten zinc liquid, so that the steel can be suitable for more processing methods, a zinc layer can be sacrificed, heat input and deformation of the steel can be relieved and part of stress can be absorbed and dispersed in the welding and wind cutting processes when the steel is subjected to operations such as welding and wind cutting, and the steel is prevented from being damaged. The prepared steel has the characteristics of good processability at low temperature and strong impact resistance at low temperature.

The utility model discloses a horizontal variable stiffness foundation pit support structure for soft soil area, including H-shaped steel, crown beam, cast-in-situ bored pile, arch truss, energy-absorbing cell body and force transfer member, H-shaped steel is provided in the inner cavity of cast-in-situ bored pile, crown beam is provided at the top end of cast-in-situ bored pile, arch truss is connected with cast-in-situ bored pile through force transfer member, and the energy-absorbing cell body is connected with the cast-in-situ bored pile. The energy absorption cell bodies are arranged between the cast-in-situ bored piles and the soil body, and the prestressed steel strands are arranged at the two ends of the arch feet of the arch truss. The energy absorption cell body is arranged between the cast-in-situ bored pile and the soil body behind the pile, a negative Poisson's ratio structure is adopted, excellent energy absorption capacity is achieved, impact and damage of the soil body in front of the pile to a supporting structure due to the phenomena of mutual wedge-caulking of soil particles, soil stress redistribution, main stress direction deviation and the like can be effectively relieved, and the supporting effect is improved. The stability and the non-deformability of the foundation pit are enhanced; an arch truss is arranged in an area with insufficient rigidity, the horizontal supporting rigidity is improved, deformation and uneven deformation are reduced, and stability and safety are enhanced.

The invention discloses a wavelength conversion device, which is characterized in that the wavelength conversion device comprises a bearing substrate, the bearing substrate comprises a metal substrate, a middle layer and a substrate, and the metal substrate is connected with the substrate through the middle layer; and the wavelength conversion layer is arranged on one side, far away from the metal substrate, of the substrate. According to the wavelength conversion device provided by the invention, the bearing substrate comprises the metal substrate, the middle layer and the substrate, the metal substrate and the substrate are connected through the middle layer, and the middle layer has certain elasticity, so that the condition that the device is damaged due to deformation of the metal substrate in the prior art can be solved; the deformation of the metal substrate is relieved through the elastic middle layer; the used middle layer is the bonding layer with good heat dissipation, and the bearing substrate with the novel structure can use a thinner metal substrate, so that the weight of the bearing substrate is reduced to a great extent, and the energy consumption is reduced.