75results about How to "Ensure welding stability" patented technology

Disclosed are an Al-Mg-Zn-Mn aluminum alloy welding wire and a preparation method thereof. The welding wire and the method belong to the technical field of aluminum alloys. The welding wire comprises,by mass, 0.5-3.0% of Zn, 4.5-5.5% of Mg, 0.4-1.0% of Mn, 0-0.15% of Ti, 0-0.15% of Cr, 0-0.25% of Fe, 0-0.25% of Si, 0-0.15% of the total amount of other impurity elements, 0-0.05% of single impurityelement and the balance Al. The preparation method comprises the steps of smelting, casting, preprocessing after heating to 200-400 DEG C and performing heat preserving for 2-6 hours, extruding afterperforming heat preserving under the temperature of 440-470 DEG C for 2-4 hours, rolling after heating to 480-550 DEG C and performing heat preserving for 2-4 hours, in-process annealing and bright-cold drawing. According to the method, high-temperature and long-duration uniform processing is not needed, energy is saved, processing procedures of welding wire are shortened, wire braking during drawing is reduced, yield of drawing is improved, production cost is reduced, and metal microstructure can be refined, so that weld metal has natural aging strengthening capability to improve the performance of weld joints.

The invention discloses a double-heat-source collaborative welding method and device for large thermal conductivity mismatched metal materials, and belongs to the field of metal material welding. Whenwelding the large thermal conductivity mismatched metal materials, the method adopts two heat sources to simultaneously heat the front and back sides of joints and optimizes energy distribution of the joints by controlling energy parameters and positional parameters of the two heat sources, side heat input of high thermal conductivity metal is increased, the heat loss caused by the higher thermalconductivity is compensated, the low thermal conductivity metal side welding temperature is controlled, and the problem of large thermal conductivity mismatched metal material welding forming is solved and the joint welding quality is improved. The preheating effect of the joints is obtained by tilting the two heat sources on the front and back sides at a certain angle in the welding direction, and the single-pass welding double-sided forming of the joints is realized under auxiliary measures such as no chamfering and pre-weld preheating. The welding device can effectively adjust and controlthe heat distribution of the joints by precisely controlling the position of the welding heat sources in the three-dimensional space, and efficient and reliable connection of the large thermal conductivity mismatched metal materials is realized.

The invention relates to a tripod automatic spot welding method and a tripod automatic spot welding device. The tripod automatic spot welding method comprises the following steps that firstly, a chute and a triangular plate are placed in a cavity formed in a mode that clamping positioning mechanisms are combined, the clamping positioning mechanisms are respectively driven by a cylinder so as to fix the triangular plate and the chute, and both ends of the chute are positioned and clamped by the drive of the cylinder; a small bracket is placed in a cavity of a first clamping positioning mechanism, a control switch is pushed again, and clamping blocks of the first clamping positioning mechanism are closed to clamp the small bracket; after three parts are respectively fixed at the corresponding positions, the welding work is started, a first spot welding mechanism is used for carrying out fixed spot welding on the tripod and the chute, at the same time, a second spot welding mechanism is used for carrying out fixed spot welding on the small bracket and the chute, the first spot welding mechanism transversely and longitudinally slides to reach set positions by two groups of slide rails so as to complete spot welding of three welding spots, and the second spot welding mechanism also completes spot welding of two welding spots by a transverse moving guide rail; after the spot welding is completed, the clamping blocks are opened, an ejection mechanism is driven and lifted up by the cylinder so as to eject out a finished product. The tripod automatic spot welding method and the tripod automatic spot welding device are convenient for an operator to take out the finished product.

The invention discloses a large-board fan-out double-sided antenna package structure and a preparation method thereof. The large-board fan-out double-sided antenna package structure includes a carrierplate, a number of semiconductor chips, package layers, transmission layers, wiring layers, antenna layers, solder mask layers and metal bumps. The backs of the semiconductor chips are attached to the two sides of the carrier plate. The package layers are respectively located on the two sides of the carrier plate and cover the semiconductor chips, and the fronts of the semiconductor chips are exposed to the package layers. The transmission layers, the wiring layers and the antenna layers are all located on the package layers. One side of each transmission layer is electrically connected withthe corresponding package layer and the fronts of the corresponding semiconductor chips, and the other side is electrically connected with the corresponding wiring layer and the corresponding antennalayer. Each wiring layer has a pad area and a non-pad area. The solder mask layers are located on the package layers and cover the antenna layers and the non-pad areas. The metal bumps are welded to the pad areas of the wiring layers. The antenna layers occupy small volume, and the package structure is arranged reasonably. The integration performance of the antenna packaging structure and the efficiency of antennas can be improved. Surface warpage will not be caused due to the performance difference of materials. The accuracy, yield and welding stability during production can be guaranteed.

The invention relates to welding equipment for an air extraction hole in the bottom of a vacuum cup and a machining process of the welding equipment. The welding equipment comprises a machine frame base, wherein the machine frame base is provided with a top pressing device, a bottom lifting and rotating device and a guiding device which correspond to one another from top to bottom, and the top pressing device and the bottom lifting and rotating device are movably connected to the machine frame base; the top pressing device and the bottom lifting and rotating device move towards the guiding device; and the guiding device comprises a horizontally-arranged fixing plate, a conical surface arranged downwards is formed in the middle of the fixing plate, and a through hole is formed in the middleof the conical surface. Compared with the prior art, the welding equipment has the advantages that through the arrangement of the bottom lifting and rotating device and the guiding device, the to-be-welded position of the bottom of the vacuum cup is moved to the bottom of the conical surface of the guiding device, and the welding piece is moved to the to-be-welded position of the bottom of the vacuum cup under the action of gravity and the conical surface, so that the safety and the convenience of the welding process are ensured; and besides, the top pressing device is arranged to press the welding piece compactly, so that the welding stability of the welding piece and the vacuum cup is ensured.

The invention discloses a portable operation platform for optical fiber fusion welding. The portable operation platform includes an optical fiber fusion welding platform and an optical fiber cutting platform; the optical fiber fusion welding platform accommodates an optical fiber fusion welding machine; the optical fiber cutting platform is used for optical fiber treatment before optical fiber fusion welding; the optical fiber fusion welding platform is detachably connected with the optical fiber cutting platform through a connecting portion; a tripod fixing hole is formed in the bottom of the portable operation platform; the tripod fixing hole is in matched connection with a camera tripod; and waist sling fixing holes and neck sling fixing holes are formed at side portions of the portable operation platform and are used for fixing slings connected with an operator. The portable operation platform of the invention can be used under various conditions such as high-altitude space, ground and platforms, can facilitate the operation of the operator and can better adapt to various practical requirements.

The invention discloses welding equipment for processing a rail damping backing plate. The welding equipment for processing the rail damping backing plate comprises a conveying belt, wherein an inverted U-shaped plate is fixedly arranged in the conveying belt; the width of the inverted U-shaped plate is larger than that of the conveying belt, and a transverse plate is horizontally arranged on theupper side of the conveying belt; two electric telescopic rods are symmetrically arranged on two sides of the conveying belt; one end of each electric telescopic rod is fixedly connected with the transverse plate, and the other end of each electric telescopic rod is fixedly connected with the inverted U-shaped plate; a welding gun is arranged on the lower side of the transverse plate, and is fixedly connected with the transverse plate through a horizontal moving mechanism; a carrying plate is fixedly arranged on the conveying belt; a first fixing mechanism and a second fixing mechanism are arranged on the carrying plate; and a welding groove is formed between the first fixing mechanism and the second fixing mechanism. The welding equipment can be used for processing the rail damping backing plate, strip-shaped pieces or parts can be stably welded to the edge of a plate-shaped main body, uniform welding is achieved, and the effect is good.

The invention discloses a multi-station seat welding workstation which comprises a station base, a first positioner and a second positioner are respectively erected at two ends of the station base, rotary workbenches are respectively arranged on the first positioner and the second positioner, two symmetrical stations are arranged on each rotary workbench, two stations of the first positioner are respectively provided with seat plate dies used for clamping a seat plate and a side supporting plate, each seat plate die comprises a first base plate, the middle of the first base plate is provided with a supporting plate, two symmetrically arranged clamping plate assemblies are arranged at the outside of the supporting plate, two stations of the second positioner are respectively provided with back plate dies used for clamping and fixing a back plate, each back plate die comprises a second base plate, a fixing lug frame corresponding to an adjusting support is arranged on the second base plate, and the middle of the station base is provided with a welding manipulator used for welding products on the stations. According to the multi-station seat welding workstation, the work continuity isensured, the work which is completed by six persons originally can be completed by one person, the work efficiency is improved, and the labor cost is lowered.

The invention discloses a steel piston forming an inner cooling oil way based on laser welding and a machining method of the steel piston. The steel piston comprise a piston body and an annular sealing plate; a piston head part of the piston body is provided with the inner cooling oil way and a combustion chamber; the inner cooling oil way surrounds the combustion chamber, and the piston head part is further provided with an oil inlet hole and an oil outlet hole which communicate with the inner cooling oil way; an annular opening is formed in the upper end of the inner cooling oil way and located in the top end of the piston head part; the annular sealing plate is embedded in the annular opening and connected and fixed through laser welding, the upper end of the inner cooling oil way is sealed, an inner annular channel is formed by the inner circle of the annular sealing plate and the side wall of the annular opening in a surrounding manner, an outer annular channel is formed by the outer circle of the annular sealing plate and the side wall of the annular opening in a surrounding manner, and the inner annular channel and the outer annular channel are filled with high-temperature-resisting heat isolation rings used for forming a laser welding pool. The method comprises the first step of component machining, the second step of laser welding and assembling, the third step of heat treatment and the fourth step of post machining. The steel piston and the machining method have the beneficial effects of being high in machining cost, good in quality stability and low in machining cost.

The present invention relates to a fuzzy control method for CO2 short-circuiting transfer welding and its welding machine. It is characterized by that it adopts a closed-loop control method combining parameters-matched coordinate control and parameters-regulated fuzzy control, on the basis of the real-time detection on short circuiting transfer frequiency of reflecting stability of welding process, according to the coordinate relationship between all welding parameters and short circuiting transfer frequencies, it makes fuzzy treatment to detected data to define the regulating quantity of all parameters to make real-time regulation to make short circuiting transfer frequency keep stable in a certain range to ensure the optimum matching relationship between all parameters. Said invention possesses the advantages of good parameter matching property, strong anti-interference capacity and stable welding course.

The invention relates to the technical field of GIL and provides a bus unit and a pipeline bus. The bus unit comprises a bus cylinder and a conducting rod, wherein one end of the bus cylinder is provided with a fixed insulator which is fixedly arranged relative to the bus cylinder, two axial ends of the fixed insulator are provided with a fixed connecting seat and a plug-in connecting seat respectively, the fixed connecting seat is used for fixing and conductively connecting the corresponding conducting rod in the bus unit or in the adjacent bus unit, and the plug-in connecting seat is used for plug-in matching and conductively connecting the corresponding conducting rod in the bus unit or in the adjacent bus unit. The fixed connecting seat and the plug-in connecting seat arranged on the two sides of the insulator in the bus unit change a conductive rod in the prior art into a mode that one end is fixed and the other end is telescopic, the telescopic movement of only one end of the conductive rod is limited, and the whole conductive rod can still adapt to temperature change through self telescopic deformation; a problem that the insertion length of the conducting rod is too short and even falls off when the conducting rod expands with heat and contracts with cold can be effectively avoided.

The invention discloses an adjustment device for welding the reinforcement skeleton of landscape columns, which includes a turntable and a mounting plate, and a support column is arranged on the turntable, and the support column is arranged obliquely and forms an included angle with a horizontal line, and the value of the included angle is 45°~60°, a column perpendicular to the horizontal plane is fixed on the upper end of the supporting column, the mounting plate is fixed on the column, and at least one mounting seat is arranged on the surface of the mounting plate, and a fixed The plate is provided with a mounting hole on the fixed plate, and the two ends of the conveying roller are arranged in the mounting hole through the rotation of the rotating shaft. In view of the defect in the prior art that the steel cage with large axial length tends to fall in the middle during the seam welding process, the applicant added a supporting component to the seam welding machine, which is used to support the steel cage during the seam welding process to ensure The axes of multiple main bars will not be deformed due to gravity factors, ensuring that the welding points of the reinforcing bars on the main bars are always at the preset points, and improving the strength of the formed reinforcement cage.

The invention discloses a YAG multi-beam light splitting gradual-change type light path negative feedback control system. The system comprises a laser device, at least one coupling light path assembly, a quartz reflecting mirror and a control device; each coupling light path assembly comprises a gradual-change type light splitting device, a first energy negative feedback device and a laser coupler; the quartz reflecting mirror is arranged at an angle of 45 degrees with light beams of the laser device, each gradual-change type light splitting device is arranged at an angle of 45 degrees with refraction light beams of the quartz reflecting mirror, the refraction light beams of the first energy negative feedback devices, the refraction light beams of the laser couplers and the refraction light beams of the gradual-change type light splitting devices are located on a straight line, and the first energy negative feedback devices are located between the laser couplers and the gradual-changetype light splitting devices; and the first energy negative feedback devices and the gradual-change type light splitting devices are connected to the control device. According to the technical scheme,the multi-path simultaneous welding stability of a precision device is guaranteed, and the requirements of diversified laser welding technologies in multiple occasions are met; and meanwhile, the manufacture and maintenance costs are low, the use is simple, and the debug is rapid and convenient.

The invention relates to the technical field of seam welders, in particular to a full-automatic girth seam welder, and aims to solve the problem that a traditional circular seam welder is complex in working procedures and low in efficiency. The full-automatic circular seam welder comprises a body and a roll welding device, the roll welding device comprises an upper roll welding wheel and a lower roll welding wheel, the upper roll welding wheel moves up and down through a first air cylinder; a support is arranged at the side, away from the roll welding device, of the machine body; a positioningdevice is arranged on the body and comprises a fixed shaft and a clamping shaft which are located at the same height, and the clamping shaft is located on the support and connected with the support in a sliding mode. The problem that the circumferential seam welding procedure is complex is solved, the length of a workpiece is prevented from being limited by means of the positioning device, and good development prospects are achieved in the technical field of seam welders.

The invention discloses a manufacturing method for a ceramic heating element. According to the manufacturing method, the ceramic heating element adds iron powder into tungsten paste, and the stabilityof the tungsten paste is neutralized and the solidity of later brazing is improved; and the addition of ruthenium oxide not only improves the conductivity of welding electrodes, but also ensures thestability of specific resistance in printed circuits. The manufacturing method uses the combination of high pressure and hot pressure when two layers of green layers are pressed, and the problem of poor binding force of a film layer after sintering is solved; and in the process of sintering, ammonia is filled in, nitrogen and hydrogen are obtained by pyrolysis of ammonia in a tunnel kiln by usinghigh temperature, sintering is performed after a reducing gas atmosphere is formed, oxidation is prevented, the cost of sintering is reduced, hydrogen gas gushing from both ends of the tunnel kiln isignited to form a protective gas film, and water obtained after hydrogen ignition can not only effectively cool sintered ceramic sheets, but also alleviate the problem of low strength of unsintered green sheet in the sintering process.