47 results about "Induction brazing" patented technology

A high-frequency induction melt-brazing method suitable for an anode aluminum guide rod and a steel claw comprises the steps that to-be-welded surfaces of the anode aluminum guide rod and the steel claw are pretreated, and then high-frequency electromagnetic induction heating coils are arranged around the steel claw; a layer of brazing filler metal is laid on the to-be-welded surface of the steel claw, the steel claw is heated to the first preset temperature through induction current generated by a high-frequency electromagnetic induction heating coil, the heating time is controlled to the first preset time, the brazing filler metal is molten and diffused to the to-be-welded surface of the steel claw, and a steel claw welding precursor is obtained; the anode aluminum guide rod is placed on the welding surface of the steel claw welding precursor, a layer of brazing filler metal is laid between the welding surface of the steel claw welding precursor and the anode aluminum guide rod, the induction current generated by the high-frequency electromagnetic induction heating coil is utilized again to heat the steel claw to the second preset temperature, the heating time is controlled to the second preset time, and the steel claw welding precursor is obtained. And high-frequency induction melt-brazing of the anode aluminum guide rod and the steel claw is realized.

The utility model discloses an induction brazing device for welding a wear-resistant layer on a detachable outer roller sleeve. The induction brazing device comprises an induction brazing tool, the induction brazing tool comprises an upper die, a lower die, a lifting mechanism and an induction brazing heating mechanism. A lower groove is formed in the lower die, the detachable and replaceable outer roller sleeve is tightly plugged in the lower groove through a plug plate, a wear-resistant structure is placed on the upper surface of the detachable and replaceable outer roller sleeve, and the space between the wear-resistant structure and the detachable and replaceable outer roller sleeve is filled with welding flux; the telescopic end of the lifting mechanism is connected with the upper die, the upper die is connected with a pressing plate, the lower surface of the upper die is connected with a heating wire in the induction brazing heating mechanism, and when the pressing plate of the upper die is pressed on the abrasion-resistant structure in the lower die, a gap is formed between the heating wire and the abrasion-resistant structure. The abrasion-resistant structure can be welded to the outer surface of the detachable outer roller sleeve in an induction brazing mode, the welding time is short, meanwhile, the stress influence is reduced, damage to the detachable outer roller sleeve is reduced, and the service life of the detachable outer roller sleeve is prolonged.

The invention discloses a manufacturing process of a precise diamond roller, which belongs to the technical field of diamond rollers and comprises the procedures of mold design and processing, internal electroplating, pretreatment, braze coating material preparation, CVD (chemical vapor deposition) strip inlaying, braze coating material coating, assembling and fixing of a female mold cavity and a roller base body, vacuum drying, gas shield induction braze welding, precise finishing, detection and packaging and the like. According to the method, the diamonds sequentially fall into the female die cavity through the hole template, then one ends of the diamond particles are preliminarily fixed into the female die cavity through the internal electroplating method, and finally the other ends of the diamond particles are embedded into the braze coating material through braze welding, so that ordered arrangement and high consistency of the diamond abrasives are achieved, and the quality of the diamond abrasives is improved. And the durability and the precision of the roller are improved.

The invention relates to high-frequency induction brazing equipment and a welding method.The high-frequency induction brazing equipment comprises a wire welding machine, a cooperative heating device, an induction brazing device, a workpiece tool, a wire feeding device, a servo motor and a workbench, and the workpiece tool, the wire feeding device and the servo motor are all installed on the workbench; the wire feeding device comprises a wire feeding pipe, a wire feeding pipe fixing device and a wire feeding table, the wire feeding table is installed on the workbench, the wire feeding pipe fixing device is rotationally installed on the wire feeding table and connected with the servo motor, a welded workpiece is installed on the workpiece tool, the welded workpiece is composed of two matched sleeving structures, and the two sleeving structures are connected with the servo motor. The collaborative heating device is installed on the wire feeding device, the wire welding machine connects a welding wire into the wire feeding pipe and conveys the welding wire to the welding area or the position above the welding area or is connected with a welded workpiece, and the collaborative heating device is matched with the induction brazing device to jointly heat the welding wire section. The device is simple in structure and convenient to use, welding wires are melted efficiently, and digital and intelligent control is achieved.

The invention relates to a method for induction brazing of a first part (1) with a second part (2) at a contact line (3), wherein at least the first part (1) has a raised portion (4), which forms a chamber (5), the chamber being at the contact line, comprising the following steps: - depositing a brazing wire (6) in the chamber; - closing the chamber by assembling the second part (2) with the first part; - heating at least the brazing wire by induction so as to melt it; the contact line forming a plane (P) that virtually divides the brazing wire (6) into two portions, each portion representing 40% to 60% of the entire cross-section of the brazing wire.

The invention discloses a method and system for obtaining copper pipe welding parameters, and the method comprises the steps: obtaining a first length verification copper pipe with the same specification as a copper pipe required by actual welding, and dividing the verification copper pipe into a plurality of verification areas from the first to the Nth; executing a first verification step on the first area when the verification copper pipe is in a non-ventilation state; sequentially introducing protective gas into the verification copper pipe according to a preset flow gradient, and sequentially executing a second verification step on the S adjacent verification areas under different flows; oxidation information in the verification copper pipe is obtained, and a welding parameter comparison table of the current verification copper pipe is generated based on the oxidation information; and on the basis of the welding parameter comparison table, welding parameters of the current welded copper pipe are obtained. The method can effectively verify the internal protection effect of the copper pipe during copper pipe brazing under the conditions of various heating temperatures, heating time and gas flow, and is beneficial to certification and use of copper pipe induction brazing process evaluation.

The invention discloses a snow shoveling plate preparation process in the technical field of snow shoveling plate preparation, which comprises the following steps: preparing hard alloy snow shoveling teeth by adopting ultra-coarse particle tungsten carbide and EFS-T cobalt powder, processing a welding groove in an NM400 steel plate, performing sand blasting, treating a hard alloy welding surface, paving Ag-Cu-Ti three-layer gradient brazing filler metal, performing high-frequency induction brazing, and performing post-welding heat treatment to eliminate stress. And finally, straightening and detecting. The snow shoveling plate manufactured through the technology is good in wear resistance, high in welding interface shear strength and excellent in impact toughness at the temperature of-40 DEG C, the hard alloy snow shoveling teeth are modularly designed and can be detached and replaced, and the problems that an existing snow shoveling plate is insufficient in wear resistance, prone to falling off during welding, high in maintenance cost and the like are solved.

The utility model discloses a multi-hole-site efficient induction brazing tool for a copper pipe flange. The multi-hole-site efficient induction brazing tool comprises a base, a pair of rotary lifting assemblies arranged on the two sides of the base, clamping jaw assemblies arranged at the upper ends of the rotary lifting assemblies and a flange supporting platform arranged in the middle of the base. The clamping jaw assembly comprises a clamping jaw base fixed to the rotary lifting assembly and a plurality of clamping jaws fixed to the clamping jaw base. The device can be suitable for welding products of various similar structures, the flange supporting platform and the copper pipe clamping assembly both support rapid replacement, the used clamping jaw can guarantee accurate positioning of the copper pipes, one-time clamping and repeated welding of the multiple copper pipes and a base body flange can be achieved in cooperation with an opening and closing type heating coil carried by a mechanical arm, and the welding efficiency is improved. And the time for repeatedly clamping the copper pipe and the time for adjusting the posture of the copper pipe are saved.

The utility model discloses a flexible heavy-load induction brazing device assisted by a collaborative robot and a balancer, which relates to the technical field of brazing and comprises a six-axis collaborative robot, a spring balancer, a brazing working head, a six-axis collaborative robot arm fixing brazing working head and a spring balancer hanging brazing working head. The brazing working head is used for clamping and welding a to-be-welded copper terminal on a large-size component; and the control cabinet body is electrically connected with the six-axis collaborative robot, the spring balancer and the brazing working head. The six-axis collaborative robot and the spring balancer are used for collaboratively assisting work to form the flexible heavy-load working device, and the flexible heavy-load working device has the advantages that man-machine collaboration can be achieved with low cost, the working difficulty is greatly reduced, meanwhile, the working intensity of workers can be reduced, and the intelligent level of production and manufacturing is improved.

The present application relates to the technical field of induction heating, in particular to an electromagnetic induction brazing process and device for manufacturing a spiral-welded pipe by using a layered composite metal strip, the electromagnetic induction brazing process and device for manufacturing a spiral-welded pipe by using a layered composite metal strip is a welding method using ultra-high frequency or high frequency, medium frequency induction current as a heat source, high frequency heating is suitable for welding thin-walled pipe fittings, the medium frequency induction brazing equipment can replace the backward preheating means such as oxyacetylene heating, coal oven heating, box-type electric furnace heating and resistance heating, and can be used as a preheating equipment before brazing, the cooperation of the two can greatly improve the product quality, effectively save more than 60% of electric energy, and improve the labor conditions.

The present invention discloses an induction brazing device and a welding method for multi-degree-of-freedom of irregular-shaped components. The induction brazing device includes a working platform, a robotic arm, an induction brazing coil, a three-degree-of-freedom working platform, etc. The two ends of the induction brazing coil are respectively connected to the ends of the two induction brazing coil robotic arms. Through the movement of the robotic arms, a current closed loop is formed at any position; the induction brazing coil is composed of multi-degree-of-freedom joints controlled by a pneumatic circuit, which can realize the brazing of workpieces of different shapes; the three-degree-of-freedom working platform controls the movement of the workpiece to realize the array-type induction brazing requirements of different positions of the workpiece; the three-degree-of-freedom working platform and the robotic arm realize intelligent coordinated movement through an adaptive linkage controller, which not only realizes the convenient clamping and disassembly of the workpiece, but also is applicable to the brazing of a large number of workpieces; the temperature monitoring device robotic arm can control the temperature monitoring device to monitor the surface temperature distribution of the workpiece in real time from multiple directions and angles.

The application provides a kind of superhard abrasive forming grinding wheel ultrasonic vibration auxiliary brazing device and its operating method, the device includes motion control system, ultrasonic vibration system, high-frequency induction brazing system and forming grinding wheel fixing device, the forming grinding wheel to be brazed is fixed on the fixing device by spring chuck.The motion control system is composed of a slider placed on a moving guide rail and an electric mechanism controlling its movement, which can control the speed and direction of the slider moving up and down on the guide rail;The ultrasonic vibration system includes two ultrasonic vibration amplitude rods, piezoelectric ceramic transducers, and an external ultrasonic power supply.Each piezoelectric ceramic ultrasonic amplitude rod can provide longitudinal vibration, and two-dimensional elliptical ultrasonic vibration during brazing is achieved by combining the longitudinal vibration in two perpendicular directions;The brazing head driven by the motion control system moves up and down according to the brazing progress, and the induction coil inside the brazing head circulates cooling water.The application solves the problems of uneven distribution of brazing filler metal, low processing quality, excessive concentration of brazing temperature, and serious metallurgical reaction during the brazing process of the forming grinding tool.

The invention relates to the technical field of welding, in particular to a centrifugal machine disc body welding machining method based on full-automatic welding equipment. According to the centrifugal machine disc body welding machining method based on the full-automatic welding equipment, the centrifugal machine disc body is welded in a high-frequency induction brazing mode, heat is concentrated in the contact area of the reinforcing ribs and the disc body, the heat stress of the disc body is greatly reduced through uniform heat input, the problems of warping, deformation and the like of the disc body are effectively prevented, and the service life of the disc body is prolonged. And the forming precision and the structural stability of the disc body are improved. In the brazing filler metal melting process, the clamping force on the reinforcing ribs is increased through the clamping assemblies, the molten brazing filler metal is promoted to flow from the middle to the periphery under the capillary phenomenon effect, gaps between the reinforcing ribs and the disc body are fully filled, tight connection of the reinforcing ribs and the disc body is achieved, the probability that holes are generated in welding gaps is reduced, and the appearance quality of the disc body is improved; and the service life of the disc body is prolonged.

The invention provides a non-vacuum brazing connection method for high-temperature-resistant space truss rod pieces. The non-vacuum brazing connection method comprises the steps that space truss nodes are fixed to a tool; one end of each space truss rod piece is coated with welding flux, the space truss rod pieces coated with the welding flux are arranged in the space truss nodes in a sleeving mode, it is guaranteed that the welding flux fills the matched cavities, and the space position precision of the space truss rod pieces is guaranteed through a tool; covering the brazing connection part with a quartz isolation cover, and introducing inert protective gas; a non-contact induction brazing device is used for conducting electromagnetic induction heating on the brazing connection part; and the non-contact induction brazing device is removed, and inert protective gas is continuously introduced into the quartz isolation hood till the connector is cooled to the room temperature. By means of the method, the service environment temperature of the space truss structure ranges from 500 DEG C to 1100 DEG C, the space truss rod piece connecting strength is not lower than 95% of base metal, and the space truss rod piece connecting brazing process is not limited by the vacuum environment.

The invention relates to the technical field of welding, in particular to a medical gas copper pipe induction brazing protection effect verification method which comprises the following steps: selecting a copper pipe with a set length, and marking a plurality of marks at equal intervals along the axial direction of the copper pipe; under the condition of no ventilation, heating the copper pipe by using a heating device, measuring the heating temperature, and respectively recording the heating time T1, T2, T3 and T4 when the heating temperature of the copper pipe reaches 650 DEG C, 700 DEG C, 750 DEG C and 800 DEG C; inert gas is introduced into the copper pipe, the flow of the inert gas is controlled to be a first set value, and a heating device is used for sequentially conducting heating for T1 time at the first marking position, conducting heating for T2 time at the second marking position, conducting heating for T3 time at the third marking position and conducting heating for T4 time at the fourth marking position; the flow of the inert gas is controlled to be a second set value; the flow of the inert gas is controlled to be a third set value; and recording the mark position of which the oxidation degree meets the standard. According to the method, construction acceptance and use of medical gas copper pipe brazing can be guaranteed.

The invention discloses an alignment inductor for induction brazing. The alignment inductor comprises an inductor base, a hollow copper pipe with a square outer part and a round inner part, a ferrite magnetizer, a polytetrafluoroethylene insulating sheet and a reinforcing rib. A heating opening is formed in the middle of the square-outside and round-inside hollow copper pipe in a winding mode, and magnetic field concentration and even distribution are achieved through coil bending and spiral winding design. The ferrite magnetizers are symmetrically arranged to enhance a magnetic field; the reinforcing ribs reinforce the structure to prevent deformation; the teflon insulating sheet isolates current to avoid short circuit. By optimizing the structural design, the heating speed, the welding precision and the heat efficiency are remarkably improved, meanwhile, energy consumption and environmental pollution are reduced, and the device is suitable for precision part welding and automatic production requirements and has the technical advantages of being efficient, safe and environmentally friendly.

The invention provides brazing filler metal, a welding structure, a preparation method of the welding structure, a compressor, a pipeline of the compressor and an air conditioner, relates to the technical field of compressors, and aims to solve the problems of low welding efficiency and low welding seam strength in related technologies. The brazing filler metal is applied to induction brazing of a compressor pipeline and comprises, by mass, 80-90 parts of copper, 5-10 parts of phosphorus, 1-5 parts of manganese and 0.5-5 parts of iron. According to the brazing filler metal provided by the invention, Fe and Mn synergistically improve the resistivity, iron can refine grains, and hysteresis loss during high-frequency heating is reduced. Under the same experiment condition, the Mn + Fe combination enables the resistivity improvement effect to be about 30% higher than that of single addition.

The invention discloses a stainless steel small-diameter thin-walled tube induction brazing structure and method, a plurality of small-diameter thin-walled tubes and a connector are connected through a novel stainless steel induction brazing welding structure and an induction brazing method, the induction brazing welding structure comprises the connector, a sleeve and a thin-walled tube three-layer structure, the sleeve is arranged between the connector and the thin-walled tube, and the sleeve is arranged between the connector and the thin-walled tube. And the fit clearance between the sleeve and the joint and the fit clearance between the sleeve and the thin-walled pipe are 0.02-0.05 mm, and effective connection between a plurality of thin-walled pipes and one joint is realized through twice induction brazing processes. The problem that a plurality of small-diameter stainless steel thin-walled pipes (the diameter is smaller than or equal to 10 mm) with the thickness ranging from 0.5 mm to 0.8 mm are difficult to weld with one stainless steel connector at the same time is effectively solved, the stainless steel thin-walled pipe connector is particularly suitable for connecting a plurality of small-diameter thin-walled pipes with the thickness ranging from 0.5 mm to 0.8 mm and the diameter is smaller than or equal to 10 mm with one connector in aerospace heat exchanger products, and the stainless steel thin-walled pipe connector is good in sealing effect, resistant to vibration, resistant to high temperature and long in service life. The fatigue performance is good in a high-temperature vibration environment, and the welding joint reliability is high.

The invention relates to a rotor end-to-end induction brazing device, which comprises an alternating current power supply device, an inductor, a cooling system, a coupling device and a clamping device, and is characterized in that the inductor converts current into a magnetic field through a chip-type induction conductor which is packaged in an insulating material and is electrically connected with the alternating current power supply device. Due to the fact that the current density is higher, the magnetic line of force is directional and controllable, the welding efficiency is improved by more than 30%, the needed power is reduced, and effective energy saving is achieved. Preferably, the welding device comprises a heat insulation seat which is provided with a through groove used for accommodating a welded rotor parallel head and an induction coil and an avoiding groove used for accommodating an adjacent rotor parallel head; and a pressing mechanism. The induction brazing device is suitable for brazing of aluminum rotor parallel heads, convenient to operate, high in welding efficiency, good in welding quality, free of splashing and small in influence on peripheral metal parts. The induction brazing of the rotor parallel heads can be finished in a high-quality manner under the condition that the rotor parallel head arrangement gap is very small.

A high-frequency brazing process method for angular pipe end threaded joints belongs to the field of aero-engine technology. The high-frequency brazing process method for angular pipe end threaded joints includes: pre-assembly of the angular pipe end threaded joint and the high-frequency brazing tooling, installing the angular pipe end threaded joint on the top of the adjustment block, installing a protective cover on the top of the adjustment seat, adjusting the position of the adjustment block so that the side wall of the angular pipe end threaded joint fits with the protective cover; adjusting the height of the adjustment seat so that the area to be welded of the angular pipe end threaded joint is located on the upper part of the protective cover; installing a protective block on the top of the adjustment seat, and fitting the protective block and the protective cover to form a circular structure; inserting a catheter into the top hole of the angular pipe end threaded joint for high-frequency induction brazing. The high-frequency brazing process method for angular pipe end threaded joints can achieve high-frequency brazing of angular pipe end threaded joints, thereby improving the quality and processing efficiency of aero-engine pipeline products.

This invention relates to the field of electromagnetic relay manufacturing technology, and discloses an ultra-high frequency induction brazing device for an electromagnetic relay contact spring system, comprising: a worktable, a fixture, a moving mechanism, and an ultra-high frequency induction brazing machine; the fixture is disposed on the worktable surface and is used to clamp and fix the contact spring system; during welding, a spring sheet is sleeved on the Kovar alloy lead-out rod in the contact spring system to form a welding point between the two; the output end of the moving mechanism can move along a first direction and a second direction, and the induction brazing head of the ultra-high frequency induction brazing machine is disposed on the moving mechanism; during operation, the moving mechanism drives the induction brazing head to move along the first direction and the second direction, so that the induction coil of the induction brazing head is aligned with each welding point. This device adopts non-contact induction heating, completely avoiding the use of carbon rod electrodes, eliminating the generation of excess carbon powder from the source, and greatly improving the internal cleanliness and long-term operational reliability of the electromagnetic relay.

The application provides a brazing coating material and a preparation method thereof. The brazing coating material comprises: a brazing material, the brazing material comprises: diamond, alloy powder; compounded heat-conducting filler; and a binder, the binder is used for mixing with the powdery brazing material and the compounded heat-conducting filler to form the brazing coating material in a fluid or paste state. The brazing coating material of the application effectively improves the heat conductivity coefficient of the brazing coating material by adding the compounded heat-conducting filler, improves the heat conduction performance of the coating, effectively reduces the drying time in the preparation stage of the induction brazing coating and the induction heating heat transfer time, and reduces the production cost of the brazing coating process.

The utility model provides an induction brazing clamp which comprises a base and a supporting and clamping mechanism, the supporting and clamping mechanism comprises a first supporting and clamping assembly and a second supporting and clamping assembly, the first supporting and clamping assembly and the second supporting and clamping assembly each comprise a supporting part and an adjusting and clamping part, the first end of the supporting part is movably connected with the base, and the second end of the supporting part is movably connected with the adjusting and clamping part. The second end of the supporting part is connected with the adjusting clamping part; the adjusting clamping part comprises a clamping body, a fixing piece and an adjusting component, the clamping body is provided with a clamping position, the fixing piece is arranged at the clamping position, the adjusting component is arranged on the upper portion of the fixing piece, a workpiece is placed on the fixing piece, and the adjusting component is movably arranged on the clamping body. According to the induction brazing clamp, the distance between the first supporting and clamping assembly and the second supporting and clamping assembly can be adjusted, the induction brazing clamp is suitable for workpieces of different specifications, adjustment is easy, and operation is easy; due to the modular design, the machining cost can be reduced, the precision is high, the clamping area is large, and clamping is stable; the height of the clamping position can be independently adjusted, and the brazing seam thickness can be controlled.

The invention belongs to the technical field of diamond rollers, and particularly relates to a high-strength and high-precision diamond tool and a manufacturing method thereof. The method comprises the steps of designing and machining, ball milling and mixing, SPS hot pressing sintering, rough finishing, CVD diamond strip inlaying, gas shield induction brazing, heat treatment, precise finishing and the like. The W powder and the CuZn powder are subjected to high-energy ball milling treatment, active element powder such as Fe, Ni, Mn and Sn is added, and the spark plasma sintering process is combined, so that the compactness and the structure uniformity of an alloy blank are remarkably improved; the method comprises the following steps: filling powder in a female mold cavity of a graphite mold, performing cold press molding, performing SPS hot pressing sintering, performing rough finishing, dipping paste copper / silver-based brazing filler metal, and realizing metallurgical bonding between a CVD diamond strip and an alloy blank through induction brazing. The diamond tool prepared by the method has the characteristics of uniform distribution of the CVD diamond strips, good direction consistency, excellent wear resistance, high finishing efficiency and long service life, and is suitable for the high-precision machining field of gears, bearings, guide rails and the like.

The invention discloses a clamping tool for induction brazing of a guide pipe and a connector, which is characterized in that a guide pipe limiting piece and a connector limiting piece are mounted on a base, the guide pipe can be detachably fixed on the guide pipe limiting piece, and the connector is detachably fixed on the connector limiting piece; an induction coil of the induction brazing equipment is located between the guide pipe limiting piece and the connector limiting piece. The atmosphere box provided with a gas inlet is installed on the base, the gas inlet is communicated with a gas path of a protective gas source for external welding, and the induction coil can be located in the atmosphere box. The guide pipe limiting piece and the connector limiting piece are designed on the base, the assembled guide pipe and the assembled connector to be welded can be reliably and temporarily fixed to the base, the guide pipe limiting piece and the connector limiting piece can limit the guide pipe and the connector respectively, and the coaxiality of the guide pipe and the connector in the welding period is guaranteed; and by designing the atmosphere box, it is guaranteed that the guide pipe and the connector cannot be oxidized when heated and the brazing filler metal is melted, and the welding quality is guaranteed.

The invention provides a high-performance hard tube assembly silver-based induction brazing device, and relates to the technical field of welding equipment.The high-performance hard tube assembly silver-based induction brazing device comprises a welding platform, a box cover is installed at the upper end of the welding platform, a limiting unit is arranged at the upper end of the welding platform and can clamp a tube, and a welding unit is arranged above the welding platform; and the pipe is heated and welded by an induction heating coil in the welding unit. By arranging the synchronous centering type limiting unit driven by the two-way air cylinder, automatic centering, clamping and positioning of the hard pipe to be welded can be achieved, the problems that in an existing brazing device, the clamping coaxiality of the hard pipe is poor, and displacement deviation is prone to occurring in the welding process are effectively solved, the centering precision of a brazing opening is greatly improved, and the welding quality is improved. Defects of pseudo soldering, leakage and the like caused by centering deviation are avoided, and the sealing performance and the structural strength of the hard tube assembly after brazing are guaranteed. And meanwhile, the flexible high-temperature-resistant clamping base plates are arranged on the inner sides of the clamping jaws, so that the outer wall of the hard pipe can be prevented from being scratched, indented and the like in the clamping process.

The high-frequency induction brazing method for the aluminum-steel dissimilar metal of the electrolytic cell anode structure comprises the steps that a hollow annular connecting piece is arranged at the to-be-welded end of a steel bar, and the to-be-welded end of an aluminum bar can be inserted into the connecting piece; the to-be-welded areas of the steel bar and the aluminum bar and the connecting piece are subjected to deoxidation and sand blasting treatment; after a plurality of screws are fixed to the end, to be welded, of the treated steel bar, aluminum-based brazing filler metal is placed in the connecting piece, and the aluminum-based brazing filler metal comprises metal elements of Al, Cu, Mg, Si, La and Ce; after the to-be-welded end of the aluminum bar is inserted into the connecting piece, high-frequency electromagnetic induction heating coils are arranged around the to-be-welded areas of the steel bar and the aluminum bar; the steel claw is heated to the preset temperature through induction current generated by the high-frequency electromagnetic induction heating coil, the heating time is controlled to the preset time, aluminum side melting and steel side solid combination are achieved through the skin effect and the proximity effect, and the multi-face stable connector is formed.

This utility model discloses a processing device suitable for induction brazing of electromagnetic relay housing assemblies, relating to the field of relay housing assembly processing technology. It includes: a feeding mechanism, a positioning mechanism, a pressing mechanism, and a brazing heating mechanism. The feeding mechanism is used to pick up the housing assembly to be brazed onto the heating seat of the brazing heating mechanism; the positioning mechanism is used to push the housing assembly to be brazed onto the heating seat to a target positioning point; the pressing mechanism is used to press the housing assembly to be brazed onto the target positioning point using a pressing head, so that the heating coil of the brazing heating mechanism can perform the welding operation. This utility model alleviates the technical problem of low production efficiency in the manual operation mode of resistance brazing.

This invention relates to a method for laser-aligned brazing of vibration-damping bosses on aero-engine fan rotor blades, comprising the following steps: Pre-welding preparation of the fan blade: fixing pressure-sensitive adhesive tape to the non-welding area of ​​the blade body and the boss; Brazing solder preparation: mixing Lielite hard alloy powder and brazing filler metal to form a brazing filler metal mixture powder; preparing Lielite adhesive; thoroughly mixing the prepared adhesive and brazing filler metal mixture powder to form a paste; Pre-laser alignment brazing preparation: applying the paste brazing filler metal to the boss; placing the coated blade in an environmental chamber, then evacuating the chamber and filling it with argon gas to maintain atmospheric pressure; Laser alignment brazing: using a rectangular flat-top laser, with the spot size determined by the wear-resistant boss on the blade; Post-brazing inspection: using fluorescence and X-ray inspection to check the welding quality. This invention solves the problem of uneven wear-resistant layer caused by induction brazing methods. This invention can ensure uniform distribution of hard alloy on the surface of the wear-resistant layer.

The utility model relates to the technical field of welding, in particular to a titanium alloy conduit induction brazing heating auxiliary device which comprises a supporting frame used for being placed in a conduit body, a positioning boss arranged on the supporting frame and used for fixing an end head, a fastening clamp used for fastening the conduit body, and a heat gathering ring which is used for adjusting an induction coil after being bent and is embedded. According to the utility model, the welding part of the to-be-welded part is placed in the alternating magnetic field, a local heating method is realized through the induction current of the heat gathering ring, and the induction coil is used as a heating source to melt the brazing filler metal ring, so that the purpose of welding is achieved, the fit clearance and the heating source are controlled in a pure argon gas environment, and the visual and accurate quality repair of the titanium alloy conduit is realized; the current titanium alloy guide pipe welding problem is solved.