3730results about How to "Guarantee welding quality" patented technology

The invention provides a hanging-style pipe connecting welding robot composed of an electrical sliding loop part, a rotary mechanism, a stretching mechanism, a lifting mechanism, a sewing mechanism and a manually lifting adjusting mechanism. The rotary mechanism consists of a fixed part and a rotary part. The fixed part of the rotary mechanism is fixed on the end of the horizontal arm of the cross arm as a seat of the hanging-style robot, and the stretching mechanism is arranged on the rotary part of the rotary mechanism. The lifting mechanism is arranged on the stretching mechanism, and the lifting adjusting mechanism is arranged on the lifting mechanism, the sewing mechanism is arranged on the manually lifting adjusting mechanism. The electrical sliding loop part is arranged on the rotary mechanism. By adjusting the relative position between the welding robot and the connecting pipe and adjusting the manually lifting adjusting mechanism to proper welding position, the hanging-style pipe connecting welding robot can realize linkage at four degrees of freedom, and can perform automatic welding for different shape of pipes with the advantages of good welding quality, high efficiency and reduced labor intensity of workers.

The invention discloses a two-axis multipoint automatic spot welding device and a using method. The two-axis multipoint automatic spot welding device comprises a spot welding machine, a rotary working platform, workpiece forming dies, a machine base and a transformer. The spot welding machine is a two-axis spot welding machine, an X-axis linear module and a Y-axis linear module are arranged on the upper portion of an upper spot welding arm, the upper spot welding arm is installed on a transverse sliding block of the Y-axis linear module, the Y-axis linear module and a longitudinal sliding block of the X-axis linear module are fixed together through a two-axis connecting plate, a plurality of lower electrodes are arranged on a lower electrode holder of a lower spot welding arm, and a programmable controller is further arranged, and is connected with a driving motor in a control mode. The using method includes the steps of (1) manufacturing the workpiece forming dies, (2) manufacturing an upper electrode, (3) manufacturing the lower electrodes, (4) producing welding point coordinate information, inputting the welding point coordinate information to a numerical control system in the digital programmable controller, (5) setting the control state of the digital programmable controller to the rotary working platform, and (6) carrying out machine starting and operation. The two-axis multipoint automatic spot welding device is applicable to multipoint welding operation, complete in structure and high in degree of automation, work and labor are saved, energy is saved, and efficiency is high.

The invention relates to a construction method for integrally sliding a large-span steel pipe arch of a curved bridge, belonging to the field of bridge engineering construction. The method comprises the following steps: firstly, carrying out on-site splicing and welding on the manufacturing and installing sections of a steel pipe arch to form a large hoisting section; then installing a temporary arch-splicing support on a bridge-site longitudinal splicing site position, arranging arch ribs on the temporary arch-splicing support, and adopting an arch springing restraint device to preload arch springings after finishing splicing the steel pipe arch, thus enabling the steel pipe arch to form a stressed entirety; and finally, dismantling the temporary arch-splicing support, and adopting a pushing power system to realize integrally sliding the whole steel pipe arch into a proper position. The construction method of the invention has the advantages of small site occupation, integral hoisting of large sections, less hoisting subsection and less arch-splicing support amount, thus the construction cost is economical, the high-altitude welding quantity is less, the welding quality is ensured, the arch axis linetype control is easy, the steel pipe arch splicing and a concrete beam can be simultaneously constructed, arch splicing is carried out on an ectopic bridge site, the underbridge navigation is not influenced, the construction is safe and the construction progress can be quickened.

The invention is concerned with an assembled and seal method of box crane beam with ring type orbit using for nuclear power plant, belonging to the establishment construction technology field of nuclear power plant. It relates to rectification of stuff, sealing inner and outside webs and clapboard, sealing upper and down wing edge and the inner and outside webs, sealing stiffened panel, sealing end plate and the rectify after seal. Assemble and seal the web and inner muscle plate to a type of H to reduce the distortion and keep the seal quality, while the temporary backboard controls the final seal distortion when sealing the end plate. It will control the distortion effectively to reach the demand of the first level of nuclear quality and nuclear safety through easy adjustment of circle crane beam after sealed with steady quality.

The invention discloses a welding tool for production of an automobile seat framework. The welding tool for production of the automobile seat framework comprises a base (1), a feed clamping device, two side section clamping devices and a supporting bar clamping device, wherein the feed clamping device is provided with a sleeve (14) in advance and pushes the sleeve to the position above a slope (50) of the bottom section of a U-shaped bent pipe (2) in the automobile seat framework, the two side section clamping devices are used for fixedly clamping two side sections of the U-shaped bent pipe (2), and the supporting bar clamping device is used for fixedly clamping a first supporting bar (3) and a second supporting bar (4) so that the two ends of the first supporting bar (3) and the two ends of the second supporting bar (4) can be in fixed lap joint to the two side sections of the U-shaped bent pipe (2) correspondingly. By the adoption of the structure, the U-shaped bent pipe, the first supporting bar and the second supporting bar can be fixedly clamped, and therefore the welding tool for production of the automobile seat framework can guarantee fixed clamping of the U-shaped bent pipe and the welding precision and the product consistency of the first supporting bar and the second supporting bar during automatic welding.

The invention provides a method for the welding of steels like 10Cr9Mo1VNb and 1Cr18Ni9, which controls the temperature between 150-200deg.C before welding at the layer. With the back welding current being 115A/85A(peak/base), welding speed 2-3cm/min, thickness no less than 3mm, filling welding current 150A/20A (peak/base), welding speed 2-3cm/min, width of the welding channel being 2-3 times of the solder wire. It has smaller welding depth, reasonable control of the fuse ratio and chemical effusion.

The invention relates to a vacuum electronic beam welding method for a titanium-alloy rotor component. Five welding seams of a rotor of a gas compressor are welded by an electronic beam welding process. The vacuum electronic beam welding method has the advantages that reasonable welding sequence and welding parameters are adopted for controlling the welding deformation and the quality of the welding seams, the technical difficulties of poor whole rigidity, larger welding amount and difficult control for welding deformation and the like of a product are overcome, the quality of the welding seams is ensured, and the design requirement is met.

The invention discloses a manufacturing method of a large-size welding type carburizing and quenching gear, comprising the following steps of: selecting gear material; determining the basic process routes when processing a gear ring, a subplate and a hub, and processing sperately; and integrally processing the gear. The manufacturing method has the advantages of reducing welding lobar intensity, improving production efficiency and ensuring the stability of welding quality.

The invention discloses a solar cell crystal silicon wafer series welding machine, which comprises a welding mechanism and a welding assisting mechanism which is directly or indirectly connected with the welding mechanism, wherein the welding assisting is an automatic feeding mechanism, a welding strip feeding mechanism or an automatic discharging mechanism. The automatic feeding mechanism, the welding strip feeding mechanism, the welding mechanism and the automatic discharging mechanism are sequentially connected. All mechanisms work cooperatively and can realize the continuous, rapid and stable welding of cells.

The invention relates to a multifunctional digitized welding machine, which comprises a full-bridge type inversion main circuit, a control circuit and a soft switch PWM (Pulse-Width Modulation) driving circuit, wherein the full-bridge type inversion main circuit is composed of an IGBT (Insulated Gate Bipolar Translator); the soft switch PWM driving circuit of a symmetric carrier is based on a CPLD (Complex Programmable Logic Device) or FPGA (Field Programmable Gate Array); the inversion main circuit comprises a rectifying filtering module, an IGBT full-bridge inversion module, a main transformer and a secondary rectifying filtering module; the control circuit comprises a DSP (Digital Signal Processor) control processor, a manual idle-dropping circuit, a regulating, detecting and sampling circuit for a feedback current and voltage signal outputted by the welding machine, a collecting and setting circuit for a feeding speed and given voltage of the welding machine, a display circuit for an interface and parameter of an external keyboard and a communication circuit connected to a PC (Personal Computer); the regulating, detecting and sampling circuit for the feedback current and voltage signal outputted by the welding machine comprises a Hall voltage sensor for detecting a feedback arc voltage outputted by the welding machine and a Hall current sensor for detecting an output current of the welding machine; and the collecting and setting circuit for the feeding speed and given voltage of the welding machine comprises a collecting circuit for a given voltage and given current, namely the feeding speed, on a panel of a feeder.

The invention discloses a method and system for automatic robot welding based on multilayer and multi-pass welding of curved surfaces. The method comprises the following steps of: S1, extracting a surfacing parameter of a welding pass from a database; S2, extracting and processing a welding-pass characteristic curve according to the surfacing parameter so as to determine welding path information needed in welding; S3, calculating posture information of a welding gun according to the welding path information; and S4, automatically generating a robot operating program according to the welding path information and the posture information of the welding gun, and carrying out welding operation according to the operating program. According to the invention, a specific computation model and an arrangement strategy are established according to the relevant parameters of the current welding pass needing to carry out multilayer and multi-pass welding so as to calculate the whole movement locus and the welding-gun posture needed by welding accurately, and the operating program of a robot controller is automatically generated for carrying out corresponding welding action, so that the welding quality is guaranteed and the working efficiency of welding of a robot is greatly increased.

The invention relates to an automobile model switching mechanism of an automobile production line, and solves the defect that in the prior art, one welding clamp only can correspond to one automobile model, so that the automobile model switching is inconvenient, the switching operation is troublesome and disordered, and the work efficiency is low. The automobile model switching mechanism comprises a rotating platform, at least two sets of clamping and positioning mechanisms on the rotating platform, and a rotary driving mechanism fixed under the rotating platform, wherein the clamping and positioning mechanisms comprise frame bodies, clamping arms, positioning arms and driving units; the clamping arms and the positioning arms are hinged to the frame bodies; the driving units correspond to the clamping arms and the positioning arms respectively; and the rotary driving mechanism comprises a rotating shaft and a driving gear meshed with outer teeth of the rotating shaft. As the clamping and positioning mechanisms are arranged on the rotating platform, and the lower part of the rotating platform is arranged on the production line, one set of rails is shared, and the rotary driving mechanism drives the rotating platform to rotate, the fast switching between two or three sets of the clamping and positioning mechanisms on the rotating platform is realized, the efficiency is high, the structure is simple, no transfer rail is required to be arranged additionally, and the cost is reduced.

The invention relates to a welding technique, especially a combined welding process combining small bevel angle full-automatic CO2 gas shielded protection welding with unionmelt welding, comprising following steps: (1) opening a corresponding small angle bevel on the weldment with a bevel angle of 25+50DEG; (2) paring, ensuring welding space of 8+20mm; (3) grounding welding by using full-automatic CO2 gas shielded protection welding; (4) performing filling in and capping welding by using unionmelt welding. The advantages of the invention are: (1) small bevel angle welding, saving material and improving productivity; (2) grounding welding by using unionmelt welding, the electrical arc heat quantity is centralized, the heated area is small, the welding speed is quick, head affection range is contracted, and welding deformation is small; (3) crackle generation tendency is decreased; (4) bottom slag cleaning is avoided to prepare for narrow gap welding and welding efficiency is increased; (5) filling in and capping are performed by using unionmelt welding, so that welding speed and external appearance forming quality are assured.

A catalytic converter assembly welding method for a vehicle exhaust system uses incremental part welding and includes the following steps of welding a front cone, a carrier shell and a rear cone on carrier shell subassembly welding equipment to form carrier shell subassembly, welding a front flange, a front connection tube, a middle connection tube, and the welded carrier shell subassembly on a front subassembly welding equipment to form a front subassembly, and welding flexible connection, a rear connection tube, a rear flange and the front subassembly on assembly welding equipment so as to form a catalytic converter assembly. The catalytic converter assembly welding method for the vehicle exhaust system has the advantages of greatly reducing cumulative welding residual stress caused by integrated welding and forming, avoiding deformation of complex welding on junctions of various part, improving product quality, eliminating quality problems caused by welding residual stress and a large of unqualified products owing to the welding deformation, and improving production efficiency.

The invention relates to a welding fixture for a thin-wall part. In the welding fixture for the thin-wall part, a pedestal is connected with a supporting plate through a connecting shaft; a pressing plate is used for fixing the welded part; a mandrel is fixed in a central hole of the pedestal; the number of positioning blocks is at least four; each positioning block is arranged on the same circumference of the pedestal; the number of pressing blocks is as same as that of the positioning blocks; the pressing blocks are used for fixing the welded part; one end of a positioning shaft is fixed inthe central hole of the supporting plate; a wedge block is arranged on the positioning shaft; a dowel nut is arranged at the thread section of the positioning shaft and is connected with the wedge block; the number of driving parts is at least three; the number of driven parts is as same as that of the driving parts; the number of guide parts is equal to the sum of the number of the driving partsand the driven parts; each driving part and each driven part are placed on the supporting plate along the circumference of the supporting plate at intervals; each guide part corresponding to one driving part or one driven part is fixed on the supporting plate; a first insert is arranged on one driving part; a second insert is arranged on one driven part; and an air tap jack and a vent hole communicated with the air tap jack are formed on each insert.

The invention relates to a kind of cold-rolled hot-galvanized complex phase steel. Chemical components of the cold-rolled hot-galvanized complex phase steel comprise, by weight, 0.05-0.13% of C, 0.1-0.5% of Si, 1.5-2.5% of Mn, less than or equal to 0.015% of P, less than or equal to 0.015% of S, 0.1-0.6% of Al, 0.2-0.6% of Cr, 0.1-0.5% of Mo, 0.01-0.06% of Nb, 0.01-0.06% of Ti, and the balance Feand inevitable impurities. The invention further relates to a preparation method of the cold-rolled hot-galvanized complex phase steel. The preparation method comprises the following steps of castingmolten steel into a steel billet; conducting hot rolling on the steel billet to obtain a hot-rolled plate and conducting cold rolling on the hot-rolled plate to obtain a cold-hardened steel strip; conducting continuous galvanizing and annealing process treatment on the cold-hardened steel strip to obtain a finished cold-rolled hot-galvanized complex phase steel product. The bending performance ofthe cold-rolled hot-galvanized complex phase steel is improved on the basis of meeting the requirement for strength.

The invention relates to a welding machine, particularly to an automatic straight pipe flange welding machine which is suitable for both plug-in type flange assembly type welding and butt-joint type flange assembly welding. The automatic straight pipe flange welding machine comprises a base, wherein base guide rails are arranged on the base, a trolley base is arranged on the base guide rails, a control system is arranged on one side of the trolley base, a welding torch machine is arranged on the trolley base and comprises a longitudinal adjusting mechanism, a lateral adjusting mechanism, an inner welding torch mechanism, an outer welding torch mechanism and a roller adjusting mechanism, wherein the inner welding torch mechanism consists of an inner welding torch upright post device and aninner welding torch device, and the outer welding torch mechanism includes an outer welding torch upright post device and an outer welding torch device. The automatic straight pipe flange welding machine has high automatic degree, improves welding efficiency, reduces grinding time and waste of welding materials, guarantees welding quality, and attractive formation of weld seams, is convenient to operate, saves labor, and lightens labor intensity.

The invention relates to a welding technique in equipment manufacture industry, which is a welding speciality technique of a welding casing of an MCL-typed horizontal cutting centrifugal compressor, in particular to a welding process of the welding casing of the centrifugal compressor with low-temperature steel 09MnNiDR material at -70 DEG C. The gas protection welding is adopted; the welding wire grade is HS09MnNiDR and the diameter of the welding wire is Phi1.2mm; the polarity of the power supply is reversed DC power. The invention comprises a processing before welding, a welding process and a processing after welding; wherein, the process parameters in the welding process are that the welding current ranges from 150A to 200A, the welding voltage ranges from 24V to 28V, the protection gas is the mixed gas with 80% of Ar and 20% of CO2 according to the volume percentage, the welding speed ranges from 250mm/min to 280mm/min, the dry elongation ranges from 10mm to 15mm, and the gas flux ranges from 20L/min to 25L/min. The welding wire of the gas protection welding of the invention is not required to be dried, the welding wire is automatically fed in the welding process, and a welding rod is not required to be replaced; as the heat of the MAG melting polar gas protection welding is concentrated, the invention has the advantages of narrow thermal effect area, little deformation, beautiful forming, good quality, low cost, fast welding speed, high welding efficiency, etc.

The invention discloses an assembly type steel frame connection node with a post-seismic recoverable function. A frame steel column comprises a column body and an outward extending short beam which are vertically fixedly connected, a post-seismic replaceable energy consumption connecting plate comprises an upper flange cover plate, a lower flange cover plate and a web cover plate, an upper flange of the outward extending short beam is fixedly connected to an upper flange of a body steel beam through the upper flange cover plate, an lower flange of the outward extending short beam is fixedly connected to a lower flange of a body steel beam through the lower flange cover plate, and a web of the outward extending short beam is fixedly connected to a web of the body steel beam through the web cover plate; a gap reserved between the outward extending short beam and the body steel beam is filled with a rubber pad plate; the upper flange of the body steel beam is fixedly connected to a concrete floor slab through a lift-resistant tooth-and-slot plate connecting piece. Through the double effects of connection and energy consumption exerted by the post-seismic replaceable energy consumption connecting plate, the structural damage and failure mechanism are actively controlled, it is guaranteed that the body structure keeps elasticity, damage occurs on a specified position, as a replaceable component, the post-seismic replaceable energy consumption connecting plate facilitates post-seismic replacement and repair, and a shear force connecting piece guarantees structural integrity and full exertion of combined stressed performance.

The invention relates to a welding robot workstation system for an injection molding machine frame, which comprises a welding robot, a welding device, a robot mobile slip way, a welding torch cooling device, an intelligent searching and tracking device and a robot control box, and the welding robot is arranged on the robot mobile slip way; the welding device is respectively connected with the welding robot and the welding torch cooling device; and the robot control box is respectively connected with the welding robot, the robot mobile slip way, the welding device and the intelligent searching and tracking device, to control the movement and the welding of the welding robot. The welding robot workstation system for the injection molding machine frame can automatically carry out MAG welding to a plane on the injection molding frame and other reachable weld seams, thereby ensuring the welding quality and the efficiency of the product.

The invention relates to a prefabricated tube pile embankment structure, which mainly comprises a prefabricated tube pile, a vertical drain tube, a shallow curing plate, a thin reinforcement concrete continuous plate, a rubble layer, a bubble concrete rolling-resistant layer, a concrete protection layer, a slag layer and a pavement structure, wherein the prefabricated tube pile penetrates through a soft soil layer and extends a relative bearing stratum; a weld seam protection device is arranged outside a prefabricated tube pile welding end plate; the shallow curing plate is arranged at the periphery of the top of the prefabricated tube pile; the thin reinforcement concrete continuous plate is arranged on the shallow curing plate; the top of the prefabricated tube pile is embedded in the thin reinforcement concrete continuous plate; the vertical drain tubes are pre-buried in the thin reinforcement concrete continuous plate and the shallow curing plate, the lower ends of the vertical drain tubes are externally coated with a reverse filter geotextile which is communicated with the rubber layer on the thin reinforcement concrete continuous plate; the bubble concrete rolling-resistant layer, the slag layer and the pavement structure are sequentially arranged on the rubble layer. The prefabricated tube pile embankment structure is high in bearing capacity, less in differential settlement, high in overall structure stability, and convenient to construct.