71results about How to "Reduce holes" patented technology

The invention discloses a magnetic material processing and forming die, and particularly relates to the technical field of magnetic material processing devices.The magnetic material processing and forming die comprises a machine table, a die-casting structure is fixedly connected to the middle of the upper end of the machine table, and a material filling structure slidably connected with the upper end of the machine table is arranged on the inner side of the die-casting structure; the upper end of the machine table is fixedly connected with feeding equipment connected with the material filling structure through a material conveying pipe, and a pressing die discharging structure in sliding connection with the die-casting structure is arranged in an inner cavity of the machine table. According to the magnetic material processing and forming die, in the die-casting ascending process of the die-casting structure, a die-cast magnetic element is pushed out through cooperation of the die-casting structure and the pressing die discharging structure, the magnetic element is pushed forwards under the action of the material filling structure, and finally the magnetic element enters the discharging conveying belt through the guide slope to be conveyed out; and meanwhile, the material filling structure supplements materials to the pressing mold discharging structure, automatic feeding, demolding and discharging are completed, the production process is simplified, and the production efficiency and quality of products are improved.

The invention relates to the technical field of metal materials, in particular to a preparation method of a high-performance molybdenum alloy based on a composite additive manufacturing process. According to the method, the toughened metal particles are added into the molybdenum alloy, so that cracks generated by the molybdenum alloy in laser powder bed melting can be effectively eliminated, and the novel crack-free molybdenum alloy is prepared. Meanwhile, the hot isostatic pressing technology is used for further reducing holes in the novel crack-free molybdenum alloy and improving the organization structure, so that the mechanical property of the novel crack-free molybdenum alloy is improved, and the molybdenum alloy with high compactness and high performance is prepared.

The invention discloses concrete with high salt corrosion resistance and a preparation method of the concrete. The concrete is prepared from 300-400 kg / m < 3 > of cement, 50-150 kg / m < 3 > of slag powder, 1000-1200 kg / m < 3 > of gravel, 650-800 kg / m < 3 > of machine-made sand, 0.5-2 kg / m < 3 > of a modified polycarboxylic acid water reducing agent, 0.005-0.01 kg / m < 3 > of an air entraining agent, 0.05-0.1 kg / m < 3 > of an ion chelating agent, 0.05-0.1 kg / m < 3 > of polyacrylamide, 0.01-0.05 kg / m < 3 > of sodium methyl silicate, 0.1-0.5 kg / m < 3 > of multiwalled carbon nanotube dispersion liquid and 140-160 kg / m < 3 > of water. The preparation method comprises the following steps: stirring and mixing the modified polycarboxylate superplasticizer, the air entraining agent, the ion chelating agent, the polyacrylamide, the sodium methyl silicate and part of the water for mixing to obtain an admixture mixed solution; sequentially putting broken stones, cement, machine-made sand, the admixture mixed solution, the multi-walled carbon nanotube dispersion liquid and the rest of mixing water into a stirrer, and stirring for 2-3 minutes, so as to obtain the concrete with high salt corrosion resistance. The concrete has high salt corrosion resistance in a complex service environment, the service life of a concrete structure is effectively prolonged, and a reliable guarantee is provided for infrastructure construction.

The invention relates to the technical field of integrated circuits, and discloses a preparation method of a high-purity copper sulfate basic electroplating solution for an integrated circuit, which comprises the following steps: step 1, preparing an electrolytic bath; step 2, preparing materials including high-purity copper sulfate, high-purity sulfuric acid, ammonia water, high-purity deionized water, polyvinylpyrrolidone, stannous chloride, benzimidazole compounds, sodium alkyl benzene sulfonate and nano aluminum oxide; 3, stirring and mixing high-purity deionized water and high-purity copper sulfate to form a solution; 4, adding high-purity sulfuric acid into the solution in the step 3, and stirring for dissolving; 5, adding ammonia water into the solution in the step 4 to adjust the pH value; 6, polyvinylpyrrolidone, stannous chloride, benzimidazole compounds, sodium alkyl benzene sulfonate and nanometer aluminum oxide are sequentially added according to the sequence, and the materials are stirred and mixed to be uniform; 7, the mixed electroplating liquid is filtered; and 8, storing the filtered electroplating liquid.

The invention relates to the technical field of conductive silver paste, and discloses high-thixotropy conductive silver paste and a preparation method thereof. The prepared conductive silver paste is prepared by taking spherical silver powder and modified flake silver powder as a conductive phase and glass powder as an inorganic binding phase, and adding an organic carrier, mixing and stirring. Compared with the flake silver powder, the modified flake silver powder has better conductivity, and has better and more stable dispersity in a matrix; the modified polyurea and the hydroxy acrylic resin are introduced into the organic carrier, and the thixotropy and the adhesive force of the silver paste are improved through the synergistic effect of the modified polyurea and the hydroxy acrylic resin. Therefore, the conductive silver paste has good application prospects in the fields of electronic products, solar cells and the like.

The invention provides a heat-treatment-free die-casting Al-Si alloy and a preparation method and application thereof. The heat treatment-free die-casting Al-Si alloy comprises the following components in percentage by weight: 8.10 to 10.30 percent of Si, 0.50 to 0.57 percent of Mn, 0 to 0.5 percent of Fe, 0.26 to 0.35 percent of Mg, 0.0045 to 0.0083 percent of B, 0.10 to 0.30 percent of Ti, less than or equal to 0.005 percent of Na, less than or equal to 0.005 percent of K, less than or equal to 0.005 percent of P and the balance of Al. The preparation method of the heat-treatment-free die-casting Al-Si alloy is low in cost and short in process, the obtained alloy is few in structure defect and excellent in mechanical property, and the tensile strength, the yield strength and the ductility are 310 MPa-340 MPa, 170 MPa-200 MPa and 10%-15% respectively.

The application discloses a polytetrafluoroethylene glass fiber building film material, which comprises a glass fiber cloth, pretreatment protective layers arranged on two sides of the glass fiber cloth, a dense layer and a polyperfluoroethylene propylene resin outer layer arranged in sequence, and a non-porous film is formed through the polyperfluoroethylene propylene resin outer layer, and the holes formed by the dense layer are filled, so that the dense layer is complete. The problems of low tensile strength, poor folding resistance and surface cracking of the existing glass fiber building film material are solved.

The invention discloses barium titanate-based high-entropy dielectric ceramic as well as a preparation method and application thereof, and belongs to the technical field of dielectric energy storage ceramic materials. According to the barium titanate-based high-entropy dielectric ceramic disclosed by the invention, element volatilization in the sintering process is compensated by optimizing the numerical value of x, and meanwhile, the doping content of the elements is regulated and controlled, so that the barium titanate-based high-entropy dielectric ceramic is favorable for simultaneously obtaining excellent energy storage performance and dielectric property, and has excellent dielectric property; the barium titanate-based high-entropy dielectric ceramic is favorable for obtaining ceramics with lower loss and smaller dielectric fluctuation, has good temperature stability, low remanent polarization, large effective energy storage density and excellent dielectric properties, and solves the technical problem of large dielectric loss of the existing material.

The invention relates to the technical field of construction, and discloses a basement exterior wall formwork reinforcing and waterproof construction method under a narrow space condition, which comprises the following steps: S1, planting steel bars on the surfaces: planting steel bars on the surfaces of support piles and meat piles, preparing required materials and tools, determining the positions and the number of the planted steel bars, and marking according to design requirements; s2, net hanging, concrete spraying and leveling are conducted, specifically, materials and equipment needed by concrete spraying are prepared firstly, and then the surfaces of the supporting piles and the surfaces of the meat piles are cleaned; and S3, waterproof coating brushing: firstly, wetting the surface of the base layer by using a proper amount of water without water, then uniformly brushing the waterproof coating from one direction by using a tool, and carrying out supplementary brushing in time. According to outer wall construction, a three-section type water stop screw is adopted, a water swelling strip is pasted to the joint of the three-section type water stop screw and a waterproof roll, 2-3 times of swelling deformation is generated after the water swelling strip encounters water, all irregular surfaces, holes and gaps of joints are filled with the water swelling strip, meanwhile, huge contact pressure is generated, and leakage is thoroughly prevented.

The invention discloses an automatic drilling and tapping all-in-one machine, and relates to the technical field of machinery, the automatic drilling and tapping all-in-one machine comprises a bearing driving seat, and the side end of the top of the bearing driving seat is provided with an automatic claw clamp adjusting and fixing seat; according to the invention, under the cooperation of the self-adaptive position correction assembly, the contact adjustment formed dynamically is utilized, so that the stress contact piece can form contact with the other side of the processing position of the workpiece during processing, the accumulated positioning error is reduced, the accurate calibration of the position of the workpiece is realized, and the position deviation is controlled within an extremely small range; the position and angle of the temperature control phase change adjusting structure are dynamically adjusted according to the temperature change of different parts of the workpiece under the cooperation of the thermal change auxiliary regulation and control assembly, the problem that the machining precision is reduced due to the fact that the local temperature is too high is effectively solved, the quality stability and consistency of products are improved, the temperature fluctuation range of the workpiece is reduced by 50%-70%, and the machining efficiency is improved. And material thermal stress and deformation caused by temperature fluctuation are reduced, the service life of the cutter is prolonged, and the machining efficiency is improved by about 20%-30%.

The insulator shielding cover comprises a cover body, the bottom of the cover body is provided with an opening, the front bottom and the rear bottom of the cover body are respectively provided with a front face cover and a rear face cover, two sides of the cover body are respectively provided with a guide pipe, the bottom of each guide pipe is provided with a lead wire groove, and the lead wire groove is provided with a lead wire. The lead wire groove corresponds to a gap between the front face cover and the rear face cover in position; a detachable adapter is arranged on the front mask; and a lead guide structure is arranged at the bottom of the guide pipe. The method has the advantages that mounting operation is simple, and construction efficiency can be greatly improved; after the adapter is connected with the insulating rod, a relatively far space distance can be kept between a worker and an electrified part in an installation process, so that the risk of electric shock is reduced; after the shielding cover is installed, the position is stable, hole positions and gaps are small, and compared with a traditional insulation blanket, the shielding cover is better in protection performance and longer in service life.

The application relates to a building three-dimensional reconstruction method based on multi-coplanar geometry and a graph neural network, which comprises the following steps: pre-processing aerial images and ground images and obtaining an initial point matching set; iteratively extracting multiple groups of local homography matrices between the image pairs; scaling the aerial images and the ground images and constructing a multi-scale pyramid representation; performing matching by using a deep matching network; after the matching results are converged, the inverse transformation of the homography matrix is used to project back to the original image coordinate system to form a candidate cross-platform corresponding point line set; and verified cross-platform control point set is used to replace the matching input of the reconstruction process to output a final building three-dimensional model. The application can obtain sufficient, uniform and geometrically consistent cross-platform control points in cross-platform image pairs with large angle differences, scale changes and local occlusions, thereby replacing or reinforcing the matching input of traditional three-dimensional reconstruction, and realizing high-precision, high-completeness three-dimensional reconstruction and detail recovery of a city building scene.

The present disclosure provides a light-emitting diode with improved peeling and tearing and a preparation method thereof, and belongs to the technical field of optoelectronic manufacturing. The light-emitting diode comprises an epitaxial layer, a functional stack layer, an electrode and a filling layer. The functional stack layer is located on the epitaxial layer, and the electrode is located on the functional stack layer and electrically connected with the epitaxial layer. The surface of the functional stack layer away from the epitaxial layer comprises a stepped surface, and the filling layer is located on the stepped surface. The embodiment of the present disclosure can improve the problem that the bonding metal is easily torn and damaged during laser peeling, and improve the reliability of the light-emitting diode.

The invention discloses a conductive paste for photovoltaic cells and a preparation method thereof. The following raw materials are weighed in percentage: 40-80wt% of silver powder, 5-25wt% of a metal additive, 5-15wt% of a conductive promoter, 3-5wt% of glass powder, and the remainder is a modified carrier. The raw materials are mixed and ground evenly to prepare a conductive paste for photovoltaic cells. The conductive promoter ultrasonically treats a composite carbon tube, deionized water and silver nitrate. Under the action of ammonia water, the silver nitrate is converted into elemental silver, and micropores on the composite carbon tube are blocked, so that the copper inside is not easily contacted with air and converted into copper oxide, thereby ensuring the conductivity of the conductive paste, reducing the gold semi-contact barrier, achieving better ohmic contact, reducing the migration of anions, reducing the loss of current, and thus improving the photoelectric conversion efficiency. The modified carrier reduces the addition of organic species, prevents the conductive paste from volatilizing rapidly during sintering, makes the formed conductive film dense and uniform, and further ensures the conductivity.

The invention discloses a production process of chocolate beans suitable for high-temperature and high-moisture conditions. The chocolate beans comprise a chocolate coating and a core material, gradually wrapping the ingredients layer by layer until all the ingredients completely wrap the crushed peanuts; conveying the wrapped crushed peanuts to an oven; fully cooling the baked crushed peanuts to room temperature; the preparation method comprises the following steps: melting cocoa butter substitute, preserving heat, adding the weighed raw materials into a fine grinding cylinder, performing chocolate rolling and fine grinding, adding a nut core material into a coating machine, then adding a chocolate coating and mixed powder, starting to wrap, and packaging and sealing. The key part, namely an inner core, of a chocolate product is pretreated, so that holes in the surface of the inner core are reduced, and the density is increased; the emulsifier capable of improving the waterproofness of the product is added, so that the crystal of the grease is more compact, a fine stable crystal form is formed, the crispness-keeping performance of the product is improved, the structure of the chocolate bean is optimized, and the taste of the product is met under the condition of ensuring waterproofness and crispness.

The invention belongs to the technical field of hard alloys, and particularly relates to a high-wear-resistance tungsten steel alloy and a preparation method thereof. The raw materials of the high-wear-resistance tungsten steel alloy comprise WC, Al-Sn-B nanometer oxide and a SiN / GO toughening phase, the tungsten steel alloy is designed to be of a gradient structure, the surface layer has hardness and wear resistance, the inner layer has good fracture toughness, WC is the main hard phase in the tungsten steel alloy, extremely high hardness and wear resistance are provided, and the high-wear-resistance tungsten steel alloy can be used for manufacturing the high-wear-resistance tungsten steel alloy. The Al-Sn-B nano oxide is added to form a sintering aid, so that the diffusion mass transfer process of WC in high-temperature solid-phase sintering is enhanced, the densification of the tungsten steel alloy is accelerated, and the fracture toughness of the tungsten steel alloy is improved by adding the SiN / GO toughening phase and utilizing a graphene toughening mechanism; the prepared high-wear-resistance tungsten steel alloy has excellent wear resistance and high-temperature oxidation resistance, and good toughness, strength and bending resistance.

This disclosure relates to the photovoltaic field, providing a photovoltaic cell and its manufacturing method, a tandem cell, and a photovoltaic module. The manufacturing method of the photovoltaic cell includes: providing a cell substrate having two surface sides opposite each other along a first direction; printing a first paste on at least one surface side, the first paste including at least first conductive particles and second conductive particles, both the first and second conductive particles containing silver, and the silver content of the first conductive particles being lower than that of the second conductive particles; modifying the first paste to transform it into a transport layer, the modification treatment including a first stage and a second stage, wherein the energy density provided to the first paste in the first stage is lower than the energy density provided to the first paste in the second stage. This disclosure at least helps to improve the conductivity of the formed transport layer while simplifying the preparation process of the transport layer.

The invention discloses a synthesis process of aluminum hypophosphite synergistic system flame-retardant polyamide, which belongs to the technical field of polyamide materials, and comprises the following steps: firstly, modifying the surface of an aluminum hypophosphite material by a mechanical grinding method; meanwhile, an aluminate coupling agent and a rare earth aluminate coupling agent are respectively matched to react to generate a reticular cross-linked macromolecular structure, and a micromolecular substance triphenyl phosphate is used as a synergist to improve the compatibility of aluminum hypophosphite in a PA6 composite material system; and then, taking the modified aluminum hypophosphite prepared in the previous step as a flame retardant, and dissolving epoxy silicon resin in methylbenzene to serve as a synergistic component, so that the initial decomposition temperature and the thermal degradation rate of the polyamide composite flame-retardant material are reduced, and the carbon residue amount of the polyamide composite material is further increased. According to the synthesis process of the aluminum hypophosphite synergistic system flame-retardant polyamide, the technical problems of large addition amount and poor compatibility with materials of an inorganic flame retardant in the prior art are solved.

The utility model discloses crushing and recycling equipment for plastic defective products, which belongs to the technical field of plastic product production and processing and comprises a crushing cylinder, four groups of supporting rods are arranged at the bottom of the crushing cylinder, and a first driving mechanism and a second driving mechanism are arranged on the crushing cylinder. The first driving mechanism is connected with a first crushing roller arranged in the crushing cylinder, the second driving mechanism is connected with a second crushing roller arranged in the crushing cylinder, the two sides of the top of the crushing cylinder are fixedly connected with supporting frames, and the supporting frames are provided with pressing cylinders. And through arrangement of the pressing cylinder and the pressing plate, a plurality of plastic products can be pressed, so that holes in the plastic products are reduced, the space in which the plastic can extend during crushing is reduced, and the crushing effect is improved.

The present invention discloses a preparation method and interconnection process of a carbon nanosphere @Ag core-shell material for low-temperature connection and high-temperature service. The preparation method of the carbon nanosphere @Ag core-shell material is as follows: step 1, dispersing hollow carbon nanospheres in a solvent, stirring and ultrasonic treatment; step 2, adding a silver source, stirring under light-proof conditions, and adding a reducing agent; step 3, stirring the resulting solution under light-proof conditions at room temperature; step 4, washing, centrifuging, and redispersing the resulting product for multiple times, and then drying to obtain a carbon nanosphere @Ag core-shell material. The carbon nanosphere @Ag core-shell material of the present invention has good oxidation resistance, and can effectively reduce the pores and holes in the joint through plastic deformation; it can achieve "low-temperature connection and high-temperature service", and effectively reduce the pores and holes in the joint through plastic deformation of nanoparticles, and can interconnect the chip and the substrate under low-temperature conditions to complete the connection and packaging of semiconductor devices.

The invention relates to the technical field of ceramic metallization, in particular to a preparation method of metallized ceramic silver paste, which comprises the following steps: preparing nano flake silver powder with the thickness of less than or equal to 1nm and the radius-thickness ratio of more than or equal to 100; preparing glass powder; glass powder, nanometer flake silver powder and an organic carrier with the mass ratio of (1-5): (60-80): (30-40) are mixed, subjected to ball milling and then defoamed, the prepared silver paste has good bonding strength with an Al2O3 ceramic substrate after being sintered, the volume resistivity is low, and the conductivity is good.

This invention discloses a shower head, comprising: a body having a water inlet channel; a first water distribution chamber, the first water distribution chamber having a first movable shaft, a first water outlet, a second water outlet, and a first water inlet connected to the water inlet channel, the first movable shaft being used to open and close the first water outlet and the second water outlet; a second water distribution chamber, the second water distribution chamber having a second movable shaft, a third water outlet, a fourth water outlet, and a second water inlet connected to the second water outlet, the second movable shaft being used to open and close the third water outlet and the fourth water outlet; a first water outlet channel that can be connected to the first water outlet, a second water outlet channel that can be connected to the third water outlet, and a third water outlet channel that can be connected to the fourth water outlet; a first water outlet hole that can be connected to the first water outlet channel and the second water outlet channel, the second water outlet channel being coaxially arranged with the first water outlet hole; capable of realizing a powerful single-pour water injection plus sheet water output at the same hole position, convenient for user use.

A partitioned turbine blade with an oscillating jet cooling structure and its operating method are disclosed, belonging to the fields of energy and power engineering and turbine blade cooling. The blade includes a blade shell, a jet oscillator, a cooling airflow delivery chamber, internal impact holes, external film cooling holes, and turbulence columns. In this invention, the cooling airflow impacts and cools the inner wall of the blade through the impact holes. Utilizing the characteristic of the jet oscillator to generate a large-area high-frequency sweep without moving parts, a single row of jet oscillators is used on the suction side and leading edge of the blade. Considering that the cooling demand on the pressure side is greater than that on the suction side, the pressure side fluid oscillators are arranged in two staggered rows to generate a large-area, full cooling film on the blade surface for blade cooling.

The invention discloses a flexible laminated perovskite solar cell and a preparation method of the flexible laminated perovskite solar cell. The solar cell sequentially comprises a flexible substrate, a bottom electrode, a carrier transport layer 1, a wide-band-gap perovskite light absorption layer, a carrier transport layer 2, a tunneling composite layer, a carrier transport layer 3, a narrow-band-gap perovskite light absorption layer, a carrier transport layer 4 and a top electrode from a light receiving front side to a light receiving back side. Wherein the wide-band-gap perovskite light absorption layer is made of a wide-band-gap perovskite material and a polymer elastomer. According to the invention, the polymer elastomer is introduced in the preparation process of the wide-band-gap perovskite light absorption layer, so that the waterproof performance of the wide-band-gap perovskite light absorption layer is enhanced, the thickness of the subsequent tunneling composite layer is reduced, and the bending resistance of the solar cell device is improved; and meanwhile, the problem that the wide-band-gap top cell is dissolved when the narrow-band-gap perovskite light absorption layer is prepared subsequently is solved.

The invention provides a semiconductor structure and a preparation method thereof. The preparation method of the semiconductor structure comprises the steps that a substrate is provided, and a metal interconnection structure is formed on the substrate; forming a buffer material layer on the surface of the substrate and the side wall and the top surface of the metal interconnection structure; and performing self-ion implantation on the buffer material layer to convert the buffer material layer into a buffer layer. The preparation method of the semiconductor structure is beneficial for improving the stability and the production yield of the semiconductor structure.

The invention discloses a garnet type composite oxide solid-state electrolyte, a solid-state battery and a preparation method of the garnet type composite oxide solid-state electrolyte, the chemical general formula of the electrolyte is Li < 7 > La < 3-x > Zr < 2-y > M < z > O < 12 > awt% Al < 2 > O < 3 >, 0 < = x < = 3, 0 < = y < = 0.5, z = x + y, and 1.5 < = a < = 22. Through specific multi-element doping and component regulation, the ionic conductivity of the prepared solid electrolyte is improved to 1.95 * 10 <-2.74 > * 10 < S > / cm and is far higher than that of a traditional LLZO-based electrolyte on the premise that the pure LLZO crystal phase structure is kept stable and the ceramic density is kept at the excellent level of 85.4%-98.6%; and meanwhile, the ion transmission impedance of the electrolyte is reduced to 48.5-97.3 omega.cm, and the ionic conduction dynamic characteristic is remarkably improved. The technical problems that a traditional LLZO-based electrolyte is low in ionic conductivity and an impure phase is easy to generate are solved, and the prepared solid electrolyte has structural stability and excellent ionic conduction performance and has important application value in the field of solid lithium ion batteries.

This invention discloses a thin-film solar cell with synergistic passivation and field-effect modulation functions, and its fabrication method, belonging to the field of solar cell technology. The core of this invention lies in introducing an ultrathin barium titanate (BaTiO3) interlayer between the back electrode and the CZTSSe absorber layer. This interlayer not only passively blocks electron backflow and suppresses interfacial recombination by utilizing its large conduction band offset with CZTSSe, but more importantly, it can induce BaTiO3 absorption during high-temperature selenization. 2+ Cu in CZTSSe + Non-equivalent cation migration and exchange occur, thereby actively constructing a directionally favorable cation migration and exchange-induced built-in electric field (CME-field) within the quasi-neutral region of the absorber layer, synergistically promoting the collection of photogenerated holes. This invention achieves a synergistic effect of "passive blocking" and "active driving," significantly improving battery performance and increasing the photoelectric conversion efficiency of battery devices to 14.00%.

The invention discloses a chocolate chip forming preparation process, which comprises the following steps: proportioning according to a ratio, finely grinding chocolate, preserving heat, taking out of a cylinder, packaging and the like, and is matched with the preparation of a core material to form a complete chocolate chip preparation process and a related core material preparation process. According to the preparation method, the problems that the coating type chocolate product is surrounded by a water-phase substance for a long time in a high-moisture (such as ice cream, yoghourt and drinks) use scene, the chocolate coating falls off, the internal core material absorbs water and becomes soft, the taste is not crisp and the like, and the experience feeling is poor are effectively solved, meanwhile, the water resistance of the product is improved, so that the grease crystal is more compact, and the product quality is improved. A stable crystal-form product with better fineness is formed, and the brittleness-keeping performance of the product is improved.

The embodiment of the utility model discloses a laser beam combiner and laser welding equipment. The laser beam combiner comprises an input optical fiber, the input optical fiber comprises a central optical fiber and a plurality of outer ring optical fibers, the plurality of outer ring optical fibers are arranged around the central optical fiber, and the power of the outer ring optical fibers is smaller than that of the central optical fiber; the output optical fiber is an annular optical fiber and is used for outputting an annular light spot; the welding module is used for welding and fixing the input optical fiber and the output optical fiber; and the cavity is used for accommodating the welding module, the partial area, close to the welding module, of the input optical fiber and the partial area, close to the welding module, of the output optical fiber. According to the laser beam combiner and the laser welding equipment, the welding efficiency can be improved.

The embodiment of the invention provides a semiconductor structure and a manufacturing method thereof. The manufacturing method comprises the steps that a substrate is provided, and at least one groove is formed in the substrate; forming a first barrier sub-layer on the side wall and the bottom of the groove and on the surface of the substrate; the first barrier sub-layer comprises a barrier material of which the proportion of a first crystal orientation in all crystal orientations is greater than a first preset value; forming a second blocking sub-layer on the side wall and the bottom of the groove and the first blocking sub-layer on the surface of the substrate; the second barrier sub-layer comprises a barrier material of which the proportion of a second crystal orientation in all crystal orientations is greater than a second preset value; wherein the first crystal orientation is different from the second crystal orientation.