92results about How to "Improve welding success rate" patented technology

The invention discloses a method for manufacturing a full-fiber quarter wave plate. A Sagnac interferometer type full-fiber current transformer comprises modules such as a sensing light path, a transmission fiber from a high-voltage part of 110kV to 550kV to 1,000kV to a control room of a power station, a signal processing electronic circuit, an interface circuit of a merging unit and the like, accords with the standard of IEC 60044-8, and is applicable to the industry of electric transmission and transformation and other situations for measuring high current. A full-fiber current sensor realizes current sensing by changing a phase of circularly polarized light of a (gauge outfit) in a sensitive coil through the current. The method for manufacturing the quarter wave plate, namely a key component for realizing mutual conversion of linearly polarized light and circularly polarized light in the full-fiber current transformer comprises the steps of selecting a wave plate, welding the wave plate, a transmission light path and the sensing light path, and protecting welding spots.

The invention discloses a dynamic welding method of a laser welding machine. Through the dynamic welding method of the laser welding machine, it can be well guaranteed that welding joints are linear. The head edge and the tail edge of a front stainless steel roll and the head edge and the tail edge of a rear stainless steel roll are fed to a welding machine, it is guaranteed that the edges to be welded to are located in the actual welding area of the welding machine, shears of the welding machine shear the edges of strip steel, the width of the strip steel is measured through an external sensor, and the adjustment process of a center line is achieved; accurate welding parameters are called according to actual material specifications, and a laser head moves from the driving side to the operating side so that the welding process of the strip steel can be completed. First, data of the actual welding joints are acquired; second, the data are analyzed and screened, and calculation of deviation points is performed; third, displacement adjustment reference data are generated according to data deviation. The dynamic welding method of the laser welding machine has the advantages that it is guaranteed that the welding joints are linear, a longitudinal traction track of a welding gun vertically coincides with the welding joints in a three-dimensional space, the labor intensity of production and operation staff is relieved, efficiency and stability of equipment are improved, the welding success rate is increased, and the automation degree is improved.

The invention relates to the field of an equipment heat dissipation technology, in particular to a micro-channel integrated cold plate based on a micro-channel porous flat tube and a making method thereof. The micro-channel integrated cold plate comprises a cavity area used for accommodating the micro-channel porous flat tube, a liquid-cooled cavity substrate used for accommodating the cavity area and a cover plate used for covering the liquid-cooled cavity substrate to form a closed structure; the cavity area is formed by two confluence cavities with a gradual change in shape and a flow channel cavity; the confluence cavity in the head part of the cavity area, the flow channel cavity and the confluence cavity in the tail part of the cavity area are sequentially connected; the end part of the flow channel cavity formed close to a cold plate liquid inlet and a cold plate liquid outlet is matched with the size of the flaring end of each of the confluence cavities; cooling liquid sequentially passes through the cold plate liquid inlet and outlet, the confluence cavity converging end, the confluence cavity flaring end, the flow channel cavity, the confluence cavity flaring end, the confluence cavity converging end and the cooling liquid outlet; the micro-channel porous flat tube is hermetically welded in the flow channel cavity of the liquid-cooled cavity substrate, and the cold plate liquid inlet and the cold plate liquid outlet are formed in the front end or the rear end of the liquid-cooled cavity substrate.

The invention relates to a method and equipment for welding a plastic tube network. The device comprises a heating device integrating a first heating element, a second heating element and a pore-forming positioning device comprised of a pore-forming ejector liner for forming a branched pore and a positioning liner for fixing the pore-forming ejector liner in the branched pore, wherein in a welding process, the needle protrusion of the pore-forming ejector is placed in the branched pore of a manifold and the pore-forming ejector liner is positioned by the positioning liner; and meanwhile, the end part of a thin tube and an annular welding area around the branched pore are heated so as to weld the end part of the thin tube with the annular welding area of the manifold together along the radial direction of the manifold through extrusion, and a preset profile is molded by an extrusion mold. When the equipment and the method are used, the bending of the manifold can be corrected and prevented, the success rate of primary welding can be improved, the welding efficiency is improved, the connecting force is improved and the mechanical loading capacity of the plastic tube network can be improved.

The invention discloses a negative-pressure adsorption welding device which comprises a negative-pressure producing assembly and negative-pressure adsorption plate assemblies; the negative-pressure adsorption plate assemblies comprise a bottom negative-pressure adsorption plate assembly and a top negative-pressure adsorption plate assembly; negative-pressure adsorption chambers are formed between the negative-pressure plate assemblies and the adsorption plate assemblies; the negative-pressure production assembly communicates with the negative-pressure adsorption chambers for extracting air in the negative-pressure adsorption chambers to form vacuum negative pressure; a plurality of negative-pressure adsorption holes are formed in the adsorption plate assemblies for fixing to-be-welded parts onto the adsorption plate assemblies in a negative-pressure adsorption manner to carry out welding operation when vacuum negative pressure is formed in the negative-pressure adsorption chambers. The invention further discloses a negative-pressure adsorption welding method. The negative-pressure adsorption welding device is reasonable in design, is convenient and quick to operate, is small in welding deformation and is capable of reducing working cost and improving working efficiency.

The invention relates to the technical field of display and discloses a display substrate and a manufacturing method thereof and a display device and a maintenance method thereof. The display substrate comprises grid lines and data lines for defining a plurality of pixel regions. The display substrate comprises a plurality of display units. Each display unit comprises a pixel electrode and a thin film transistor arranged inside the corresponding pixel region to correspond to one pixel, wherein the orthographic projection of the plane, where a drain electrode of the thin film transistor is located, of the display substrate and the orthographic projection of the plane, where the grid lines are located, of the display substrate are overlapped partially to form overlapping regions, so that welding can be performed on the overlapping regions so as to short-circuit the pixel electrodes and the grid lines, the drain electrodes are cut, testing signals on the grid lines are transmitted to the pixel electrodes, and poor pixels of the display device are maintained. In order to achieve the purpose of short-circuiting the pixel electrodes and the grid lines, the drain electrodes and the grid lines are welded actually; due to the fact that the drain electrodes and the grid lines are made of metal materials, the welding success rate is increased, and the maintenance success rate is increased.

The invention discloses a semiconductor laser welding method, the welding method includes the following four stages: the temperature rising stage, in which the laser power gradually rises from zero and the temperature of the welding flux rises the melting point or the approximate melting point from the room temperature; the maintaining stage, in which the laser power maintains invariable or slightly rises upon the laser power W1 at the later stage of rising the temperature; melting stage, in which the laser power continuously rises based on the later maintaining stage so that the welding flux is fully melted or close to the full melting; and the subsequent stage, in which the laser power maintains invariable upon the laser power W3 at the later melting stage so as to achieve welding. The invention has the advantages that work pieces can be optimized by processing parameters, the adhesive force of the samples to the welding point is greatly enhanced, wherein, the welding success rate for the tin soldering at one time reaches 100%, the situations such as false welding, lack welding, unsoldering and the like are not generated, and the oxidation phenomenon of the welded work pieces can be effectively avoided. Therefore, the continuous welding of the plastic welding can be realized to avoid the phenomenon for the initial point, the end point and the focal point, and the intensity of the welding point can surpass that of the original materials.

The invention belongs to the technical field of display, in particular to a fabrication method of a mask, the mask and an evaporation system. The mask comprises a frame and an open mask, wherein an opening is formed in an intermediate region of the frame, and the open mask is arranged above the frame. The fabrication method of the mask comprises the steps of applying a first counter force onto the frame during the frame formation process; and welding the open mask in a region at least covering the opening of the frame, and applying a second counter force onto the frame during the welding process, wherein the first counter force and the second counter force are same in direction and are equal in size. According to the fabrication method of the mask, the counter forces are applied onto the frame during the frame formation process, the counter forces are applied after the open mask is welded above the frame during the welding process, thus, an upper surface of the frame is better in flatness, the welding success rate can be effectively improved, and the flat state of the mask is improved.

The invention discloses a method of reducing tin soldering voidage between a COB (chip on board) and a heat-dissipation base. The method comprises the following steps of: (1) forming a soldering assistance layer on a soldering face of the heat-dissipation base, (2) forming a groove communicating an internal area and an external area of the soldering face in the COB or the soldering face of the heat-dissipation base, (3) applying a longitudinal acting force to allow the COB to close to the heat-dissipation base and a transverse acting force to drive the COB to rock during tin soldering of the COB and the heat-dissipation base, wherein the depth of the groove is greater than or equal to the thickness of the soldering assistance layer and less than the thickness sum of the soldering assistance layer and the COB or the heat-dissipation base. The method can greatly increase an actual soldering success rate; high efficiency of a heat conduction bridge between the COB and the heat-dissipationbase is guaranteed; and actual industrial popularization of the high-power COB is guaranteed.

The invention discloses a welding and positioning device for lamp strips and lamp beads. The welding and positioning device comprises a device main body, a sliding rail is arranged in the interior of the device main body, a lamp bead fixing seat is slidably mounted on the sliding rail, a lamp bead adsorption device used for limiting the positions of the lamp beads is arranged at a position, close to the bottom end, in the interior of the device main body, and a placement opening is formed in the outer surface of the upper end of the device main body. According to the welding and positioning device for the lamp strips and the lamp beads, welding can be directly carried out, people do not need to manually maintain the positions of the lamp beads and the lamp strips during welding, and therefore people can conveniently weld the lamp beads to the lamp strips, the welding efficiency and the success rate are improved, the plurality of sets of lamp beads are welded at a time, the welding speed is high, the stability of the lamp beads can be kept, the lamp beads are prevented from shaking in the welding process, the yield can be improved, the position of the lamp strip fixing plate can be limited, the positions of the lamp strips can be further limited, people can conveniently complete welding of the lamp strips and the lamp beads, and better use prospects are brought.

The invention discloses a complex formed semi-rigid cable head welding clamping device. The complex formed semi-rigid cable head welding clamping device comprises a pedestal, a positioning screw, a first spring, a nut, a compression screw, a second spring, a cover plate, a pin and a pressing block. An aligning mechanism is formed by the positioning screw, the first spring and the nut. A hold-downmechanism is formed by the compression screw, the cover plate, the pressing block, the pin and the second spring. The aligning mechanism and the hold-down mechanism are fixed to the pedestal, and thecomplex formed semi-rigid cable head welding clamping device is formed. According to the complex formed semi-rigid cable head welding clamping device, the problems that when a complex formed semi-rigid cable is welded, due to the clamping difficulty, the alignment precision of an electric connector plug is bad, and the scattering range of a standing-wave ratio after welding is large are solved, itis ensured that after the cable is welded, the standing-wave ratio meets the design requirement, and the one-time welding success rate is increased.

The invention discloses a handheld active control type electric welder. The electric welder comprises a power module and an operation handle, wherein a main control panel, a charging/discharging circuit, a power output board and a welding head are fixedly arranged on the operation handle; the charging/discharging circuit comprises a charging switch and a plurality of charging/discharging units arranged in parallel; each charging/discharging unit comprises an electrolytic condenser and a discharging switch; each of the charging switch and the discharging switch is an MOSFET tube. The handheld active control type electric welder disclosed by the invention has the advantages of high integration degree, small size, low cost and the like, and can realize the active control of the output time of welding current, so that the success rate of welding is increased; the electric welder adopts the confluence of the parallel charging/discharging units, so that each MOSFET tube is guaranteed to normally work; besides, the large current for welding is satisfied, so that the MOSDET tubes can be used for controlling large current.

The invention relates to a production technology for a trim cover of an automobile exhaust pipe. The technology includes the following steps of splitting, cutting, stamping, edge cutting, electric welding, trimming, welding, polishing and packaging. According to the production technology for the trim cover of the automobile exhaust pipe; fixing and assembly are conducted in a welding manner, and floating of a spare part is avoided; the trim cover is firmly fixed; and the service life of the trim cover of the exhaust pipe is prolonged. Three-hole datum plane positioning is adopted; spot welding is conducted firstly, and then welding is conducted; the welding successful rate is increased; it is ensured that the qualification rate of products is 100%; the burden of workers is relieved; the production efficiency is improved; materials are saved; and cost is reduced. The production technology for the trim cover of the automobile exhaust pipe is suitable for large-scale popularization.

The invention provides a welding control method, device and system and a welding robot, and relates to the technical field of numerical control. The welding control method comprises the following steps: the welding robot receives calling instructions through an operation interface of input and output equipment; laser parameter setting lists corresponding to the calling instructions in welding tasks are called out; each laser parameter setting list corresponds to a welding control instruction in the welding tasks; according to input set instructions, laser control parameters in the laser parameter setting lists are set; when the laser parameter setting lists of the welding tasks are finished, the set laser parameter setting lists are stored; and according to the laser control parameters inthe laser parameter setting lists corresponding to the welding tasks, a laser is controlled to finish the welding tasks. The welding efficiency and the welding success rate can be improved.

The present invention relates to a welding method of vacuum-tube fulcrum bar component. Said welding method includes the following steps: 1), on the molybdenum cap cutting a sink hole; (2), adding silicon-molybdenum welding flux piece into the sink hole; 3), inserting molybdenum bar into the sink hole; 4), in the sink hole adopting high-frequency welding method to weld molybdenum bar and molybdenum cap; and 5), in molybdenum cap opening adopting resistance welding to make molybdenum cap and molybdenum bar be fusion-welded together.

The invention discloses a welding method for a sputtering target material. The welding method for the sputtering target material comprises the following steps: (1) a welding gap between a sputtering target material main material and an auxiliary material is adjusted to be smaller than or equal to 0.3 mm; and (2) a stirring friction welding machine is used to conduct welding; the depth of a rotational cutting tool of the stirring friction welding machine inserted into the welding gap is 10.5-11 mm; welding is conducted rotatably by the rotational cutting tool; and when welding is conducted rotatably by the rotational cutting tool, the auxiliary material rotates with the main material. The welding method for the sputtering target material has the advantages that the cost of raw materials formanufacturing the sputtering target material is saved; moreover, high welding rate is guaranteed; by adopting the welding method, the cost is also lowered when large-scale production is conducted; thus the low-cost sputtering target material can be produced in a large scale; and when the target material is used for manufacturing chips again, the manufacturing cost of the chips is lowered greatly.

The invention provides a four-electrode welding device for a fiber splicer; the four-electrode welding device comprises four electrode rods arranged in a rectangular form, center lines of the four electrode rods are coplanar, extension lines of the center lines of the four electrode rods intersect at a point, and the tips of all the electrode rods point to the point; after the four electrode rods are electrified, an arc discharge zone is formed among the tips of the four electrode rods. The arc discharge zone generated by the four-electrode welding device can splice a thick fiber or multiple fibers, and can withhold slight fluctuations from outside; the four-electrode welding device is disposed in partial or complete vacuum; compared with the prior art, the four-electrode welding device, with convection eliminated (or diminished) and an enhanced plasma field isothermal range provided, has the advantages that slight upward fluctuations are generated at the premise of rising of heat from plasm (under atmospheric pressure) and may destroy ionic paths among the electrodes, and the destroying may sway or extinguish plasma in air.