31 results about "Laser transmission welding" patented technology

The invention discloses a method for enhancing the laser transmission welding strength of thermoplastic plastics, and relates to the technical field of plastic laser welding, and the method for enhancing the laser transmission welding strength of the thermoplastic plastics comprises the following steps: firstly, degreasing and decontaminating an upper to-be-welded part and a lower to-be-welded part; then the degreased and decontaminated upper to-be-welded part and the degreased and decontaminated lower to-be-welded part are subjected to ultraviolet light activation treatment; then coating the surface of a lower part to be welded with a coating to construct a rigid-flexible interface layer, wherein the coating is a mixture formed by compounding oxidized carbon nanotubes, mussel adhesion protein and deionized water according to the mass ratio of (0.1-5): 10: 100; then the upper to-be-welded part and the lower to-be-welded part are stacked together, and laser transmission welding is conducted under inert gas protection; and after welding is completed, cooling and forming are conducted. When the rigid-flexible interface layer is constructed, through the synergistic effect of the oxidized carbon nanotubes and the mussel adhesion protein, the welding strength and oxidation resistance of the plastic weldment can be improved, and the service life of the weldment can be prolonged.

The invention discloses a welding method reinforced by glass fibers, a welding structural part and application of the welding method and the welding structural part. The method comprises the steps that a first welding rib material is sprayed into a groove of a lower workpiece to form an initial welding rib structure, and the first welding rib material comprises a first thermoplastic material, an adhesive and a light absorbing agent; a second welding rib material is sprayed to the surface of the preliminary welding rib structure, the preliminary welding rib structure is wrapped with the second welding rib material, an integral welding rib structure is formed, and the second welding rib material comprises glass fibers; and the upper workpiece and the lower workpiece with the welding rib structure are stacked and fixed, the upper workpiece and the lower workpiece are welded into a whole through laser welding, and the welded structural part is obtained. The defects of an existing laser transmission welding process are overcome, the problems that the machining process of a welding rib and workpiece integrated machine is tedious, a light absorbing agent needs to be additionally added to the workpiece to meet the requirement for the light absorption performance of the welding rib are solved, and the problem that the surface of the welded workpiece is uneven is solved.

The invention belongs to the technical field of hydrogen storage cylinder inner container welding, and aims to solve the problems that an inner container is prone to deformation due to uneven stress in the welding process, meanwhile, the inner container needs to be positioned and clamped for multiple times, operation is complex, and the welding quality is low. The invention provides a laser transmission welding clamping device and method for an IV type hydrogen storage bottle inner container with an adjustable length-diameter ratio. The laser transmission welding clamping device comprises a centering rail driving mechanism, an inner container annular clamping mechanism, a synchronous rotation transmission mechanism and an axial pressurizing mechanism. The centering rail driving mechanism is used for adjusting the distance between the welding lap joint faces of the left inner container to be welded and the right inner container to be welded. The inner container annular clamping mechanism is used for clamping the inner container; the synchronous rotation transmission mechanism is used for driving the left inner container and the right inner container to rotate synchronously. The axial pressurizing mechanism is used for adjusting the distance between the left inner container and the right inner container and the pressure of a welding lap joint face. According to the welding device, efficient and high-quality welding of the plastic liners of multiple specifications can be achieved.

The invention relates to the technical field of laser transmission welding, in particular to a laser transmission welding method and device for flexible circuit packaging, and the method comprises the steps that a plurality of mounting holes are formed in a substrate, absorption pieces with the same number as the mounting holes are attached to a to-be-welded element, and each absorption piece comprises a light absorption layer and a heat conduction layer; the absorption piece is aligned with the mounting hole, laser is used for sequentially irradiating the light absorption layer, so that the light absorption layer absorbs laser energy and then generates heat, and local welding of the element to be welded and the substrate is achieved under the cooperation of the light absorption layer and the mounting hole; wherein in the welding process, the temperature of a welding area is monitored, whether the temperature of the element to be welded and the temperature of the substrate in the welding process are smaller than a set temperature threshold value or not is judged, and if the temperature is larger than or equal to the temperature threshold value, the laser power is automatically adjusted. Accurate control over the welding temperature and stability of the welding quality can be guaranteed.

The invention relates to the technical field of laser transmission welding, in particular to a gas-liquid coupling injection assisted laser transmission welding method and welding device.The welding method comprises the steps that a welding path is planned, and a laser beam is used for conducting transmission welding on a workpiece to form a welding seam; a cooling assembly is arranged above the workpiece, cooling liquid sprayed by the cooling assembly conducts low-temperature cooling on the weld joint along the welding path, and the moving speed of the cooling assembly is smaller than the laser welding speed; two gas nozzles are symmetrically arranged on a plane formed by intersection of a laser beam and a welding path, and gas acts near a welding point; in addition, the flow of the cooling liquid, the flow of the gas and the spraying angles of the cooling liquid and the gas are adjusted according to the surface temperature of the workpiece. By means of the method, the problem that the cooling speed is difficult to control in existing welding liquid cooling is solved, the size stability and the shape precision of a weldment are effectively kept, the welding quality and efficiency are improved, and a new technical solution is provided for the field of laser transmission welding.

The present invention relates to the field of laser transmission welding technology, and in particular to a gas-liquid coupled jet-assisted laser transmission welding method and welding device, the welding method comprising: planning a welding path, using a laser beam to transmit and weld a workpiece to form a weld; arranging a cooling assembly above the workpiece, the coolant sprayed by the cooling assembly performs low-temperature cooling on the weld along the welding path, and the moving speed of the cooling assembly is less than the laser welding speed; symmetrically arranging two gas nozzles on the plane formed by the intersection of the laser beam and the welding path, and the gas acts near the welding point; in addition, the flow rate of the coolant, the flow rate of the gas, and the spray angles of the coolant and the gas are all adjusted according to the surface temperature of the workpiece. This method solves the problem that the cooling speed is difficult to control in the existing welding liquid cooling, effectively maintains the dimensional stability and shape accuracy of the weldment, improves the welding quality and efficiency, and provides a new technical solution for the field of laser transmission welding.

The invention discloses a laser transmission welding workstation for automobile ornaments.The laser transmission welding workstation for the automobile ornamentsbelongs to the technical field of laser welding.The laser transmission welding workstation for the automobile ornamentscomprises a rack placed in a workshop, a laser welding head is fixedly installed in an upper working area of the rack, and a positioning seat is fixedly installed on a working table of the upper working area of the rack; an adsorption assembly used for positioning an upper-layer workpiece is installed on the inner side of the adjusting plate in an elastic lifting mode, a positioning assembly used for correcting the position of the workpiece and conducting lateral sealing on the workpiece is arranged on the inner side of the positioning base, an exhaust pipe is fixedly installed on the side face of the positioning base in a penetrating mode, and an adsorption cylinder is fixedly installed at the lower end of the partition plate in a penetrating mode. According to the laser transmission welding workstation for the automobile ornament, workpieces can be limited in multiple modes, multi-directional adsorption positioning can be synchronously achieved, the welding precision of the workpieces is effectively ensured, meanwhile, welding heat can be recycled, pretreatment of the workpieces to be machined is achieved, and energy conservation and environment protection are achieved.

The present invention relates to the field of laser transmission welding technology, and more particularly to a laser transmission welding method and apparatus for flexible circuit packaging. The method comprises: providing a plurality of mounting holes on a substrate; attaching a number of absorbent sheets, equal in number to the number of mounting holes, to the component to be welded, the absorbent sheets comprising a light-absorbing layer and a heat-conducting layer; aligning the absorbent sheets with the mounting holes; sequentially irradiating the light-absorbing layers with a laser, causing the light-absorbing layers to absorb laser energy and generate heat. The light-absorbing layers cooperate with the mounting holes to achieve partial welding of the component to be welded and the substrate; and monitoring the temperature of the welding area during welding to determine whether the temperature of the component to be welded and the substrate is less than a set temperature threshold. If the temperature is greater than or equal to the temperature threshold, the laser power is automatically adjusted. The present invention ensures precise control of the welding temperature and stable welding quality.

The invention provides a laser transmission welding method for welding plastic pipes and pipe fittings, and belongs to the technical field of welding, the pipes are composite pipes or plastic pipes, the pipe fittings are composite pipe fittings or plastic pipe fittings, the pipe fittings are made of light-transmitting materials, and the light transmittance range of the pipe fittings is 20%-70%; the light transmittance of the pipe is smaller than that of the pipe fitting, after the pipe and the pipe fitting are inserted, a to-be-welded part is located in a transmission welding area so that the pipe and the pipe fitting can be welded and fused together, welding comprises the steps that S1, a contour line is drawn on the outer ring of the pipe fitting in advance, a welding area is delineated, and the contour line is a closed arc line surrounding the pipe fitting by a circle; and S2, the laser moves along the contour line drawn in the step S1, so that the laser penetrates through the pipe fitting, and materials in the contact area of the pipe fitting and the pipe fitting are melted until the delineated welding area is welded. Plastic pipes and pipe fittings are efficiently and accurately welded, the labor intensity is reduced, and the working efficiency and safety are improved.

A micro gas generator (20), particularly as a drive for a seatbelt tensioner, has a base (22), a fuel cap (24) attached to the base (22) and internally defining a chamber (56) filled with a fuel (60), and an electric igniter (26) attached to the base (22) and adjacent to the chamber (56). The two parts, the fuel cap (24) and the base (22), are metallurgically joined by laser transmission welding. Furthermore, a seatbelt tensioner for a vehicle with such a micro gas generator (20) and a method for manufacturing such a micro gas generator (20) are provided.

The present application discloses a method for enhancing the strength of thermoplastic laser transmission welding, which relates to the field of plastic laser welding technology. The method for enhancing the strength of thermoplastic laser transmission welding is as follows: first, degreasing and decontaminating the upper and lower parts to be welded; then, ultraviolet light activation treatment is performed on the degreased and decontaminated upper and lower parts to be welded; then, a rigid-flexible interface layer is constructed by applying a coating on the surface of the lower part to be welded, wherein the coating is a mixture of oxidized carbon nanotubes, mussel adhesive protein, and deionized water in a mass ratio of (0.1-5):10:100; then, the upper and lower parts to be welded are stacked together and laser transmission welded under inert gas protection; after welding is completed, cooling and forming are performed. When constructing the rigid-flexible interface layer, the present invention can improve the welding strength and oxidation resistance of the plastic weldment through the synergistic effect of oxidized carbon nanotubes and mussel adhesive protein, thereby extending the life of the weldment.

Method for joining components (2, 3) by means of at least one weld (S), wherein: - defects in a weld (S) produced by a first laser transmission welding process between two components (2, 3) each formed at least partially from a thermoplastic material are identified; - if at least one defect is present, a second laser transmission welding process is carried out in a post-processing step of the weld (S), wherein at least one laser beam (L) is guided through a region of a first component (2) that is transparent to the laser beam (L) onto the weld (S) located in a contact area of ​​the components (2, 3), and the weld (S), or the weld (S) and the second component (3), or the weld (S) and both components (2, 3) are at least partially melted; - at least after melting, a defined post-processing joining pressure (NF) is applied to the components (2, 3).so that the components (2, 3) are pressed against each other in the molten area and the weld seam (S) and / or the second component (3) are compressed in the molten area by a predetermined post-processing settling distance (NW), - the molten area is cured while maintaining the post-processing joining pressure (NF), wherein in the first laser transmission welding process - the first component (2) is positioned on the further component (3) so that the components (2, 3) touch in the contact area, - subsequently at least one laser beam (L) is guided through the area of ​​the first component (2) that is transparent to the laser beam (L) onto an area of ​​the second component (3) located in the contact area and this area is at least partially melted, - by heat conduction from the molten area of ​​the second component (3) the first component (2) is at least partially melted in the contact area,- at least after melting, a defined joining pressure (F) is applied to the components (2, 3) so that the first component (2) is pressed against the second component (3) in the melted area and at least the second component (3) is compressed in its melted area by a predetermined settling distance (W), - the melted area is cured while maintaining the joining pressure (F), and in post-processing, parameters of the laser beam (L) and / or the post-processing joining pressure (NF) are selected such that the post-processing settling distance (NW) is smaller than the settling distance (W) generated by the joining pressure (F).

The invention relates to laser welding of objects, to a laser transmission welding method, and to a laser transparent polymer composition used therein, comprising at least a combination of: (A) a polybutylene terephthalate resin (PBT resin); and (B) a dialkali metal salt of norbornane-2,3-dicarboxylic acid, or a substituted derivative thereof; and / or a polyester copolymer comprising repeating units derived from the dialkali metal salt or substituted derivative thereof incorporated into the PBT resin (referred to as A / B copolymer).

The invention is based on an electronics device comprising a housing composed of at least a first and a second housing element, wherein at least the first housing element is formed from a weldable plastic material. The two housing elements are integrally bonded to one another in a joining zone by means of a weld seam, in particular a laser weld seam formed by laser transmission welding. In the bonded state, a cavity containing at least one circuit carrier with an electrical and / or electronic circuit arranged thereon is formed in the housing. The at least one circuit carrier is placed in at least one of the housing elements before they are joined. At least in the joining zone, the plastic material of the first housing element is chosen and designed to melt by absorbing electromagnetic radiation at wavelengths within a welding wavelength range (λ_weld) defined therefor and to form the weld seam by solidifying from the molten state of the material. The material of the second housing element is at least partially permeable to electromagnetic radiation at frequencies within the defined welding wavelength range (λ_weld) up to the joining zone. Furthermore, a protective region of the housing at least comprising a portion of the second housing element is designed in that the region to be protected has an additional material layer which is separate from the material of the second housing element. This material layer is designed to prevent interference radiation from a defined interference frequency spectrum (F_interference), at least partially comprising the welding frequency spectrum (F_weld), from penetrating into the cavity of the housing.

The utility model relates to the technical field of machinery, in particular to a rotary positioning structure for laser welding of a steering engine shell, which comprises a welding head connecting piece, an intermediate shaft and a shell positioning pressure head, the shell positioning pressure head is mounted at the bottom of the welding head connecting piece, and a first positioning structure is arranged between the welding head connecting piece and the shell positioning pressure head. The middle shaft is located in the welding head connecting piece, one end of the middle shaft is fixed to the welding head connecting piece, and the other end of the middle shaft is connected with the shell positioning pressing head. Compared with the prior art, by means of the welding head connecting piece, the middle shaft and the shell positioning pressing head, connection of a rotary welding unit of laser transmission welding equipment and a steering engine shell in the equipment operation process is met, and accurate positioning of the steering engine shell in the surrounding welding process is achieved.

The present invention belongs to the technical field of hydrogen storage bottle liner welding, and aims to solve the problems of uneven force during liner welding, which may cause deformation, and the need to position and clamp the liner multiple times, resulting in complicated operation and low welding quality. A laser transmission welding clamping device and method for a type IV hydrogen storage bottle liner with an adjustable aspect ratio are provided, comprising a centering track drive mechanism, a liner annular clamping mechanism, a synchronous rotation transmission mechanism, and an axial pressure mechanism; the centering track drive mechanism is used to adjust the distance between the welding overlap surfaces of the left and right liner to be welded; the liner annular clamping mechanism is used to clamp the liner; the synchronous rotation transmission mechanism is used to drive the left and right liner to rotate synchronously; and the axial pressure mechanism is used to adjust the distance between the left and right liner and the pressure of the welding overlap surfaces. The present invention can achieve efficient and high-quality welding of plastic liners of various specifications.

The application discloses a plastic light-absorbing welding pad matched with a thermoplastic welding machine, relates to the technical field of plastic welding processes, and solves the problems of high cost, poor light source availability, inconvenience of traditional laser transmission welding methods, and poor product quality stability and product control difficulty of hot air melting welding. The application comprises a gland and a welding pad main body, the welding pad main body is fixed on an equipment shell through the gland, and a soluble polytetrafluoroethylene plate is placed on the gland; the welding pad main body is composed of nano carbon black, glass fiber, titanium white powder and soluble polytetrafluoroethylene virgin granules. The welding pad main body has good light-absorbing effect, high thermal deformation resistance, good surface heat conduction effect and good fusion effect with a base material, the soluble polytetrafluoroethylene plate is directly welded on the equipment shell through light-absorbing, temperature-rising and melting of the welding pad main body, and the soluble polytetrafluoroethylene plate does not need to be punched during welding, so that the product quality stability is ensured.

The invention relates to a sensor assembly (1) for a vehicle, comprising a sensor housing (20) and a plug connection (10) between a plug housing (11) and a plug (14), which is connected to the sensor housing (20) and in which at least one first contact element (12) is arranged, and a plug-in connector (14) which is connected to the at least one connection cable (3) and which has at least one second contact element (15) which interacts with the first contact element (12) in order to produce an electrical connection, the plug-in connector (14) being introduced into a receiving opening (13) of the plug-in connector housing (11), and the plug-in connector (14) being connected to the at least one connection cable (3) and having at least one second contact element (15) which interacts with the first contact element (12) in order to produce an electrical connection. The at least one second contact element (15) and the at least one first contact element (12) are electrically connected in such a way that the at least one second contact element (15) and the at least one first contact element (12) establish an electrical connection, the plug-in connector (14) being non-detachably connected to the plug-in connector housing (11) by means of a welded connection (18), in particular a laser transmission welded connection, which forms a fluid-tight radial seal (18A) between the plug-in connector (14) and the plug-in connector housing (11). The invention also relates to a method for assembling such a sensor assembly for a vehicle.

An optical wheel assembly for a laser transmission welding apparatus includes a double-convex optical lens having two spherical surfaces that are joined by a polished side surface extending circumferentially around the lens. Each of the two spherical surfaces has a known spherical diameter. The optical lens is disposed between a pair of dish cup holders, each having a spherical concave surface with the known spherical diameter and engaging the spherical surfaces of the lens. Each dish cup holder has an axial projection extending away from a side of the dish cup holder that is opposite the spherical concave surface. The axial projections are received within respective bearings that are mounted within a housing. The bearings allow the dish cup holders and the optical lens to rotate while pressure is being applied to plastic workpieces during laser transmission welding thereof.

A curved and one-sidedly open waveguide for plastic welding, especially for laser transmission welding, includes a first reflecting element having a reflecting surface by means of which laser light can be reflected. The reflecting surface defines a receiving end at which laser light from a laser light source, in particular a light guide or a plurality of light guides, is receivable, and an output end at which laser light is directable into a laser light transmitting work piece. The reflecting surface is defined by a curve between the receiving end and the output end so that the reflecting surface of the first reflecting element has a continuously curved concave shape when viewed in cross-section. Further, the first reflecting element is not opposed by a second reflecting element so that the waveguide is open in the direction normal to the reflecting surface.

The application discloses a laser transmission welding quality detection method based on a flexible stress strain sensor, and comprises the following steps: laminating a light transmission layer film and a light absorption layer film; attaching a sensor array to the back of the light absorption layer film and connecting array units of the sensor array to a multi-channel data acquisition system; projecting laser for welding and synchronously collecting compressive stress characteristic parameters of the sensor array; performing off-line quality detection on weld samples prepared under different welding parameters, measuring weld depth characteristic parameters through an optical microscope; and establishing a multiple regression model of the compressive stress characteristic parameters and the weld depth characteristic parameters. The application arranges a flexible stress strain sensor array on the back of a weld, collects stress distribution information in a welding process in real time, and evaluates the internal quality of the weld through data processing and an established correlation model, so that an effective technical means is provided for realizing laser welding with high precision, high quality and high stability.

The application provides a near-infrared transmitting resin composition and a preparation method and application thereof, and belongs to the field of laser welding. The resin composition comprises the following components in parts by weight: 100 parts of a thermoplastic resin and 0.03-1.0 parts of a light-transmitting black organic mixture. The infrared transmitting resin composition provided by the application can be used to prepare a black plastic product with high light transmittance in the near-infrared range through extrusion injection molding. The black plastic product has very low light transmittance in the visible light range (380-750 nm) and very high light transmittance in the near-infrared range (780-1200 nm). The black plastic product prepared by the application is suitable for laser transmission welding and solves the problems existing in the laser transmission welding of the existing black plastic products. Meanwhile, the preparation method is simple in process, simple in operation control, stable in quality, high in production efficiency, can be mass-produced in industry, and has a good application prospect.

A connection device for fluid lines, comprising a connection unit (4) having a longitudinal axis (16) which is designed, in a position of use, to be inserted with its front side (22) forward into a fastening recess (3) of a separate support component (2) and to be fastened to the support component (2), wherein the connection unit (4) is axially penetrated by an insertion recess (26) into which a fluid line (5) to be connected can be inserted from the rear side (23) of the connection unit (4), and wherein the connection unit (4) has a sleeve-shaped base unit (6) to which an annular holding structure (14) designed to hold the inserted fluid line (5) is fixed and which comprises an annular housing body (12) and a sealing ring (13) which is attached to the front end of the housing body (12) and fastened to the housing body (12),wherein a release sleeve (8) serving to release the holding structure (14) is mounted axially displaceably in the housing body (12), which release sleeve protrudes from the rear of the housing body (12) with an actuating section (34), characterized in that the sealing ring (13) consists of a thermoplastic elastomer (TPE) and is non-detachably fastened to the plastic housing body (12) by means of at least one laser transmission weld (27).

The invention relates to a method for joining components (2, 3) by means of at least one weld (S). According to the invention, defects in a produced weld (S) are detected. If at least one defect is present, a laser transmission welding process is carried out in a post-processing step of the weld (S), wherein at least one laser beam (L) is guided through a region of a first component (2) that is transparent to the laser beam (L) onto the weld (S) located in a contact area of ​​the components (2, 3), and the weld (S), or the weld (S) and the second component (3), or the weld (S) and both components (2, 3) are at least partially melted.At least after melting, a defined post-processing joining pressure (NF) is applied to the components (2, 3) so that the components (2, 3) are pressed against each other in the molten area and the weld seam (S) and / or the second component (3) is compressed in the molten area by a predetermined post-processing settling distance (NW). Subsequently, the molten area is cured while maintaining the post-processing joining pressure (NF). The invention further relates to a component arrangement (5).

The laser transmission welding clamp comprises a base, a rotating mechanism, a plurality of radial clamping mechanisms and an axial clamping mechanism, a workpiece is arranged in the middle of the upper surface of the base, the rotating mechanism is installed below the base, the radial clamping mechanisms are circumferentially and evenly distributed, and the axial clamping mechanism is installed below the base. The radial clamping mechanism comprises a pushing mechanism and a temperature-resistant sponge, the pushing mechanism is installed on the upper surface of the base, and the temperature-resistant sponge is connected to the output end of the pushing mechanism and used for making contact with the outer surface of the workpiece in an attached mode and deforming along with the shape of the workpiece to achieve radial clamping of the workpiece; the axial clamping mechanism is located above the workpiece and used for achieving axial clamping of the workpiece. The problems that an existing clamp is poor in adaptability to any rotary special-shaped surface part, and clamping force distribution is uneven can be solved.

The invention relates to a thermal conditioning device (1), in particular a cooling device, for an electrical component (2) susceptible to release heat during operation, in particular for an electrical energy storage module, comprising a first plate (2) and a second plate (3) assembled with the first plate, each plate being delimited by an edge, the invention relates to a device (1) for producing a heat transfer fluid, in particular a refrigerant fluid, comprising a plurality of plates (2), in order to together form a plurality of flow-through channels (5) for a heat transfer fluid, in particular a refrigerant fluid, which define channel regions (6), at least one of said plates being stamped in order to form part of the walls of the channels, the assembly of the two plates being effected by laser welding (7) at the walls of the channels, said device being characterized in that the two plates are welded together by means of laser welding (7). A region at least partially defining a perimeter of the channel region includes a different assembly means feature (8) than laser transmission welding (7) selected from the group consisting of laser welding with filler wire, adhesive bonding, friction stir welding, or a combination thereof.

The invention relates to a device for environmental detection of a motor vehicle, comprising a laser detection device for detecting the environment of the motor vehicle, a holder fixedly connected to the detection device, the holder being designed to position the detection device on the body of the motor vehicle, and a cover element, wherein the holder and the cover element each have an end face which faces the end face of the other. Furthermore, the invention relates to a method for producing an environmental detection device by means of laser transmission welding.

The present invention relates to a laser transmission welding method for in-situ strengthening of welds, and belongs to the field of laser welding technology. The laser transmission welding method of the present invention comprises the following steps: washing a first transparent substrate to be welded and a second transparent substrate to be welded with deionized water and anhydrous ethanol respectively, and then drying; mixing a metal salt and a reducing ligand in a solvent to obtain a metal ion solution; coating the obtained metal ion solution on the first transparent substrate to be welded, heating and drying to obtain a transparent substrate containing an ion coating; subjecting the obtained transparent substrate containing an ion coating to laser scanning pretreatment; laminating the obtained transparent substrate to the second transparent substrate to be welded, with the laminating surface being the side containing the copper ion coating; adjusting the laser, and performing laser welding using the same laser route. By utilizing nanomaterials formed in situ by the chemical reaction of the ion coating to enhance the mechanical properties of the joint, a high-performance joint can be obtained while solving existing problems.

The invention relates to a laser transmission welding method for in-situ strengthening of a welding seam, and belongs to the technical field of laser welding. The laser transmission welding method comprises the following steps that a first to-be-welded transparent base material and a second to-be-welded transparent base material are washed with deionized water and absolute ethyl alcohol respectively and then dried; the method comprises the following steps: mixing a metal salt and a reducing ligand in a solvent to obtain a metal ion solution; coating a first transparent base material to be welded with the obtained metal ion solution, and heating and drying to obtain a transparent base material containing an ion coating; the obtained transparent base material containing the ion coating is subjected to laser scanning pretreatment; the obtained transparent base material is attached to a second transparent base material to be welded, and the attaching face is the side containing the copper ion coating; and a laser device is adjusted, and laser welding is conducted through the same laser route. The nano material formed in situ through the ion coating chemical reaction is used for enhancing the mechanical property of the connector, and the high-performance connector can be obtained while the existing problems are solved.

The application provides a glass and metal rapid laser welding method based on a laser deposition technology. The application comprises two welding paths. Path one comprises the following steps: 1, focusing laser through glass to inorganic target material, scanning and ablation of the target material to deposit inorganic film on the glass; 2, placing the glass with deposited film on an aluminum-based metal to be welded, and performing laser transmission welding with a scanning speed of 1-10 m / s. Path two comprises the following steps: 1, depositing an aluminum film on the surface of the metal; 2, focusing laser through glass to inorganic target material, scanning and ablation of the inorganic target material to deposit film on the glass; 3, placing the glass with deposited inorganic film on the metal with the deposited aluminum film, and performing laser transmission welding with a scanning speed of 1-10 m / s. The glass and metal laser welding method has high welding strength, is rapid and efficient, is hundreds of times faster than traditional process welding speed, and is suitable for large-scale production.