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385 results about "Weld metal" patented technology

Weld metal. noun. : the part of the metal of a welded joint that has been fused in its formation.

A stainless steel welding wire for repair welding of martensitic stainless steel turbine runners, its preparation method and application

This invention discloses a stainless steel welding wire for repair welding of martensitic stainless steel turbine runners, its preparation method, and its application, belonging to the field of metal welding material preparation technology. The chemical composition of the welding wire provided by this invention, expressed as a percentage by weight, is: C≤0.03%, Si: 0%~0.6%, Mn: 5.0%~8.0%, S≤0.010%, P≤0.020%, Cr: 12.5%~15.5%, Ni: 5.0%~7.0%, Mo: 1.0%~2.0%, with the balance being Fe and impurities. The welding wire provided by this invention is suitable for repair welding of Cr13Ni4~6 type martensitic stainless steel, and post-weld heat treatment is not required. The weld metal produced by this welding wire exhibits good strength, plasticity, and toughness, with a tensile strength ≥750MPa, elongation after fracture ≥35%, and impact absorption energy at -40℃ ≥120J.
Owner:HARBIN WELL WELDING CO LTD

Control method for inhibiting hydrogen-induced cracks in welding of ultrahigh-strength steel without heat treatment

The invention discloses a heat-treatment-free control method for inhibiting hydrogen-induced cracks in ultrahigh-strength steel welding, which belongs to the technical field of welding, and enables weld metal to obtain a low-phase-transition-temperature characteristic and a double-phase structure containing retained austenite under a specific dilution rate window by cooperatively regulating and controlling components of a welding material and welding process parameters. Therefore, preheating-free and post-heat-treatment-free efficient welding of the ultrahigh-strength steel is achieved. According to the method, the volume expansion effect generated by low-temperature martensite phase transformation of weld metal is utilized to actively counteract restrained tensile stress formed by welding cooling shrinkage; on the other hand, the effect of the retained austenite serving as an efficient'hydrogen trap 'is fully played, migration and enrichment of hydrogen to crack sensitive areas such as a heat affected zone or a fusion line are effectively blocked, and finally effective inhibition of hydrogen-induced cracks in ultrahigh-strength steel welding is achieved; the obtained welding joint is free of hydrogen-induced cracks and has the mechanical property level well matched with base metal.
Owner:TIANJIN UNIV

Ultrasonic wire feeding additive manufacturing device

The utility model discloses an ultrasonic wire feeding additive manufacturing device which comprises a base plate, a tungsten electrode welding gun, a wire feeder and an ultrasonic vibration system. The tungsten electrode welding gun, the wire feeder and the ultrasonic vibration system are jointly connected with a positioning rod, and the positioning rod is movably arranged above the base plate. The ultrasonic vibration system is located on one side of the wire feeder and used for generating high-frequency vibration signals and transferring the generated high-frequency signals to a welding metal wire. According to the ultrasonic wire feeding additive manufacturing device, ultrasonic vibration is applied to the welding metal wire, so that a high-frequency vibration signal is transmitted into the molten pool through the welding metal wire, cavitation is generated in the molten pool, beta columnar crystals generated in the solidification process can be effectively broken, and the production efficiency is improved. And the anisotropy problem of the internal structure and the mechanical property in the wire feeding direction and the stacking direction is solved, that is, the performance of an additive manufacturing part is improved.
Owner:TIPRO INT CO LTD

Cutting and welding device for processing medical instrument metal parts

The application relates to the technical field of medical instrument processing, in particular to a cutting and welding device for medical instrument metal piece processing, which comprises a processing table, a welding main body and a cutting main body, wherein the welding main body and the cutting main body are both installed on the processing table; the welding main body is used for welding metal pieces; the cutting main body is used for cutting metal pieces; a switching mechanism is arranged on the processing table and is used for switching the welding main body and the cutting main body. The cutting and welding process is completed through reciprocating motion, the transfer process can be effectively reduced, manual operation can be reduced, and the working efficiency is improved; the welding process and the cutting process are switched during the conveying of the metal pieces, the time spent on manual process conversion can be effectively reduced, and the processing efficiency can be effectively improved.
Owner:NANTONG KANGSHENG MEDICAL EQUIP

A welding device for oil tank overflow gate valve

The application discloses an oil tank anti-overflow gate valve welding device and relates to the technical field of welding devices.The application comprises a machining table, a welding gun body is fixed on one side of the top of the machining table through a flexible support, a gap device is arranged on the top of the machining table, a flange fixing assembly is arranged in the middle of the top of the machining table, the gap device comprises a fixing rod, the fixing rod is fixed on the top of the machining table, and a back-shaped frame is fixed on the top of the fixing rod.The gap device is arranged, so that the flange fixing assembly, the arc-shaped sliding plate, the sliding arc plate, the first screw rod, the first screw block, the back-shaped frame, the fixed arc plate and the hinged rod are cooperatively driven to insert four telescopic inclined surface columns into the gap between the flange and the anti-overflow gate valve body, the four telescopic inclined surface columns can keep the gap between the flange and the anti-overflow gate valve body equal, so that the welding area between the anti-overflow gate valve body and the flange is uniform, and the welding metal can uniformly fill the whole gap.
Owner:JIANGSU SUYAN VALVE MASCH CO LTD

Automatic intelligent welding equipment for building material components

The invention discloses automatic intelligent welding equipment for building material components, and belongs to the technical field of welding equipment.The automatic intelligent welding equipment for the building material components comprises a working frame, a containing assembly used for containing two to-be-welded metal thick plates is movably arranged on the working frame, and a pushing assembly is movably arranged on the working frame; a transverse moving assembly used for adjusting the position of the containing assembly is arranged on the pushing assembly, a portal frame is arranged in the middle of the working frame, adjusting assemblies movably corresponding to the two metal thick plates to be welded are movably arranged on the portal frame, and laser welding heads are movably arranged on the adjusting assemblies. A swing assembly used for driving the laser welding head to horizontally move in a reciprocating mode is arranged between the adjusting assembly and the laser welding head. The laser welding device has the advantages that the placing requirements of different angles of to-be-welded metal thick plates of different sizes are met, stable and continuous welding is achieved, automatic alignment is achieved, the welding precision is high, welding is uniform, and the structure is reliable.
Owner:HEBEI YAOCHEN STEEL STRUCTURE CO LTD

Method and system for controlling automatic welding of metal products

The application relates to a metal product automatic welding equipment control method and system. For a metal product to be welded, a target image is collected, a defect detection model is used to detect defects of the metal product to be welded according to the target image, and then welding control of the automatic welding equipment is performed according to the defect information. Since the control of the automatic welding equipment considers the defect problem of the metal product, the problem of poor welding effect of the metal product with defects can be solved. Moreover, since the pre-trained defect detection model is trained according to real images and simulation images, the model has strong generalization ability and can be applied to defect detection in various scenes, improving the accuracy of defect detection. Therefore, the technical scheme controls the automatic welding equipment to weld the metal product through defect information with high accuracy, improving the welding effect of the metal product.
Owner:DONGGUAN YOUGAO METAL PROD CO LTD

Device and method for automatically detecting surplus height of weld joint of pressure vessel

The invention discloses a pressure vessel weld reinforcement automatic detection device and detection method, and relates to the technical field of weld detection. The automatic detection device for the surplus height of the welding seam of the pressure vessel comprises a pressing plate which can move downwards in the vertical direction; a plurality of arc-shaped clamping plates are evenly arranged on the inner side of the positioning ring in the circumferential direction, and the arc-shaped clamping plates are stressed to move inwards in the downward pressing process of the pressing plate, so that the outer wall of the connecting pipe is clamped; and the flexible track is arranged on the periphery of the connecting pipe in a surrounding mode, a laser detector is arranged on the flexible track, and the laser detector can move in the circumferential direction of the flexible track and is used for conducting continuous scanning detection on the excess weld metal of the saddle-shaped welding seam. The pressing plate, the positioning column, the limiting plate and the arc-shaped clamping plate form a multidirectional cooperative positioning and clamping mechanism, so that the integrated constraint of axial pressing, radial centering and circumferential limiting of the connecting pipe is realized, and the relative positioning precision and the overall structural stability between the detection device and the connecting pipe are remarkably improved.
Owner:ZIBO CHENHUI CHEM EQUIP CO LTD

Magnetic reed switch and preparation method thereof

The invention provides a magnetic reed switch and a preparation method thereof, and the preparation method comprises the steps: carrying out the grooving of a nickel-iron wire or a nickel-iron sheet, and obtaining a static reed with one end provided with a first positioning groove; grooving the nickel-iron wire material and welding a hollow pipe to obtain a movable contact spring with a second positioning groove at one end; plating layers are plated on the surfaces of the movable reed and the static reed; metal pieces are welded to the first positioning groove of the static reed and the second positioning groove of the movable reed, and a static reed assembly and a movable reed assembly are obtained respectively; the ends, provided with the metal pieces, of the movable reed assembly and the static reed assembly are packaged in a glass tube, the metal pieces in the movable reed assembly and the static reed assembly are arranged in a non-contact crisscross mode, and finally the magnetic reed switch is manufactured. By additionally arranging the high-melting-point metal pieces which are distributed in the crisscross manner at the end parts of the movable magnetic reed and the static magnetic reed, the magnetic contact area is effectively reduced, the rebounding time of the magnetic reed is shortened, and the ablation of a switching arc to the magnetic reed is reduced.
Owner:WENZHOU HONGFENG NEW MATERIALS RESEARCH INSTITUTE CO LTD

Cold-crack-resistant welding wire for thick-specification ultrahigh-strength steel and welding method of cold-crack-resistant welding wire

The invention discloses a cold-crack-resistant welding wire for thick-specification ultrahigh-strength steel and a welding method of the cold-crack-resistant welding wire, and belongs to the technical field of welding, a low-cost alloy system with Mn as a leading part and Cr as an auxiliary part is constructed, Mn is used for reducing the Ms point, the hardenability of Cr is improved, and the Ms point of weld metal is regulated and controlled to be in a low-temperature phase change interval of 100-150 DEG C; in the welding process, the inter-pass temperature is controlled to be higher than the Ms point all the time, all layers of welding beads are kept in the austenite state in the filling process, all the welding beads are uniformly cooled, low-temperature martensite phase transformation is synchronously generated, the situation that phase transformation of the welding beads which are firstly welded too early occurs, and consequently pressure stress relaxation is caused is avoided, and part of retained austenite is reserved is avoided. By means of the characteristics of a medium Mn alloy system, the common cold crack risk in thick plate high-restraint welding is effectively avoided, it is ensured that weld metal has the ultrahigh strength, meanwhile, the alloy cost is remarkably reduced, and therefore the technical bottleneck of thick ultrahigh-strength steel in the low-cost and efficient welding application aspect is broken through.
Owner:TIANJIN UNIV

Uninsulated superconducting coil

The utility model relates to the technical field of nuclear fusion, and discloses an uninsulated superconducting coil which comprises a coil framework. The superconducting tape is wound on the coil framework to form a multi-turn superconducting tape winding; the metal strip is wound between turns of the superconducting strip; and a welding layer formed by a metal solder is filled between the metal belt and the superconducting belt material. The turn-to-turn resistance of the superconducting tape in the uninsulated superconducting coil can be increased through parallel winding of the metal tape and the superconducting tape, so that the time constant of the uninsulated superconducting coil in the charging and discharging process is reduced, meanwhile, a gap between the metal tape and the superconducting tape is filled with welding flux, and the metal tape and the superconducting tape are welded together through a formed welding layer. The interturn combining capacity of the non-insulation superconducting coil is enhanced, the mechanical stability of the non-insulation superconducting coil is enhanced, meanwhile, the heat capacity of the non-insulation superconducting coil can be increased and a cold conduction channel can be increased by winding and welding a metal belt between turns in parallel, so that the cold conduction effect is enhanced, and the overall performance of the non-insulation superconducting coil is improved.
Owner:SHAANXI STARTORUS FUSION TECHNOLOGY COMPANY LIMITED

A circuit package structure based on three-dimensional heterogeneous stack

A kind of circuit package structure based on three-dimensional heterogeneous laminated structure, the top layer edge of ceramic substrate is welded metal frame, the top layer of ceramic substrate is welded silicon MEMS substrate, the height of metal frame exceeds silicon MEMS substrate, the top layer of metal frame is welded metal cover plate, ceramic substrate, metal frame, metal cover plate form the cavity of airtight package, MEMS substrate is in the cavity, the top layer of ceramic substrate has pad, the bottom layer of silicon MEMS substrate has pad, all are welded internal BGA, the signal of ceramic substrate and silicon MEMS substrate is interconnected by internal BGA, the bottom layer of ceramic substrate has pad, and is welded external BGA, the signal of ceramic substrate is interconnected by external BGA and other substrate, ceramic substrate and silicon MEMS substrate are all stacked by multiple layers, have multiple vertical through holes and multiple horizontal wiring, each through hole is connected to any layer respectively, each wiring is on the surface or inside of multilayer board and is connected to any through hole respectively, silicon MEMS substrate is internally printed pattern and micro-bump using wafer bonding process.
Owner:NANJING RES INST OF ELECTRONICS TECH

Weld joint

To provide a weld joint in which hot cracking is suppressed.SOLUTION: A weld joint comprising a plurality of steel materials and a weld metal that joins the steel materials, wherein the weld metal has a bead index HI represented by the following formula (1) of 75 or more and an FCC phase fraction of 70% or more. In the formula (1), BW represents the width (mm) of the final bead, BT represents the thickness (mm) of the final bead, and S represents the cross-sectional area (mm2) of the final bead. Formula 1: HI=5×BW+0.5×BT+0.2×S.SELECTED DRAWING: None
Owner:NIPPON STEEL CORPORATION

Numerical simulation method of laser welding between molybdenum-rhenium alloy and stainless steel dissimilar materials

The application discloses a numerical simulation method for laser welding of molybdenum-rhenium alloy and stainless steel dissimilar materials, prepares a joint of laser welding of molybdenum-rhenium alloy and stainless steel dissimilar materials, and obtains a molten pool pattern of the joint; each thermal physical property parameter and mechanical property parameter of molybdenum-rhenium alloy base material, stainless steel base material and weld metal is obtained through experiment and calculation; a thermal-structure calculation model of the laser welding process of the molybdenum-rhenium alloy and stainless steel dissimilar materials is established; initial conditions, boundary conditions and a heat source model of the laser welding model are set; a laser welding analysis task is established, and a temperature field and a stress field of the laser welding process of the molybdenum-rhenium alloy and stainless steel dissimilar materials are solved. The method converts the yield strength of the weld metal by using the Vickers hardness of the weld metal, obtains the component proportion of the weld by means of energy spectrum analysis, and calculates the high-temperature property parameter of the weld metal by means of a calculation software. High-precision calculation of the temperature field and the stress field of the laser welding process of the molybdenum-rhenium alloy and stainless steel dissimilar materials is realized.
Owner:CHONGQING UNIV +1

A laser welding device for processing a heat exchanger connection pipe and a welding method thereof

PendingCN122425341APipe fittingShielding gas
The application discloses a kind of laser welding device and welding method for heat exchanger connecting pipe processing, it is related to technical field, including welding frame, the welding frame outside is provided with welding machine, welding frame bottom is fixedly connected with mobile platform, further include: fixed plate, fixed plate is set to mobile platform mobile end, fixed plate top is provided with two mobile seats, the top of two mobile seats is fixedly connected with fixed ring, the fixed ring inside is provided with clamping mechanism, between one of fixed ring and fixed plate it is provided with screw rod for moving;The welding place of two pipe fittings is arranged in the sealed spherical shell, and the inside of it is filled with protective gas before welding, air is exhausted, oxygen is discharged during welding, reaction of metal and oxygen under high temperature is avoided to generate oxide, the purity and mechanical properties of weld metal are guaranteed.Simultaneously, after air is replaced, nitrogen, water vapor and other gases are not rolled into molten pool, significantly reduce the internal porosity defect of weld.
Owner:MODIN PUXIN THERMAL TECH (JIANGSU) CO LTD

Metal welding device for furniture production and processing

The invention discloses a metal welding device for furniture production and processing, and relates to the technical field of metal welding devices. Comprising a welding mechanism used for welding a metal piece and a clamping mechanism used for fixing the metal piece. The welding mechanism comprises a mounting frame, a longitudinal moving assembly is mounted on the mounting frame, a lifting control base is mounted on the longitudinal moving assembly and used for controlling the lifting control base to move horizontally, and a welding head used for welding is mounted at the bottom end of the lifting control base. By arranging the structures such as the positioning covers and the positioning blocks, the sizes of the multiple positioning covers are gradually reduced in the direction away from the connecting arm, and the positioning blocks are sequentially matched with the positioning covers, so that the small-size positioning blocks on the front side can smoothly pass through the large-size positioning covers and extend into the corresponding positioning covers; therefore, the plurality of positioning covers are extruded and fixed; and a plurality of clamping plates are arranged, so that better clamping and fixing can be realized.
Owner:SHANGHAI YONGSONG FURNITURE CO LTD

A laser welding method for suppressing formation of an aluminum-rich phase in a weld

The application discloses a laser welding method for inhibiting formation of aluminum-rich phase in a weld, and belongs to the technical field of metal material processing. Firstly, welding edges of two steel plates are butted and fixed, laser wire filling welding is performed, the excess height on the surface of the weld is removed, and a welded plate is obtained; then the welded plate is kept in a heating furnace at 900-960 DEG C for 3-10 min, and the welded plate is taken out and quenched immediately; after quenching, the steel plate and the weld form martensite structures. The laser wire filling welding method is used to add welding wires into the weld, the composition of the weld metal is optimized, the aluminum-rich phase free weld structure is obtained, the welding wires entering the weld increase the volume and weight of the weld metal, the mass percentage content of the aluminum alloy in the weld metal is further reduced, the generation of the aluminum-rich phase in the weld is weakened, the joint strength after welding of the plated steel plate is greater than the base material strength, after hot forming of the welded joint, the weld is a complete martensite structure, and the weld strength is greater than or equal to 1500 MPa.
Owner:ANGANG STEEL CO LTD

Automatic welding device for metal pipes

The invention relates to the technical field of welding devices, and particularly discloses an automatic metal pipe welding device which comprises a welding platform, a feeding mechanism, a positioning mechanism, a welding mechanism, a polishing mechanism and a detecting mechanism, and the feeding mechanism, the positioning mechanism, the welding mechanism, the polishing mechanism and the detecting mechanism are arranged on the welding platform. The feeding mechanism is used for sequentially outputting to-be-welded metal pipes into the workpiece sliding groove, the positioning mechanism is used for positioning and aligning the to-be-welded metal pipes, the welding mechanism is used for welding the two positioned and aligned metal pipes, and the polishing mechanism is used for polishing weld joints of the metal pipes. And the detection mechanism is used for detecting the welded metal pipe. The device has the effect that the problems that during batch and continuous welding operation of the metal pipes, the welding consistency is poor and even waste products are generated due to the fact that the positioning precision of the metal pipes is inconsistent, and the labor load of workers is large due to long-time continuous operation of the workers are solved.
Owner:XIANGYANG XINYI ELECTRICAL CO LTD

Method and apparatus for manufacturing a pipe section

UndeterminedDE102025107021A1Structural engineeringPipe
The invention relates to a method and a device for producing a pipe section from welded sheet metal panels, wherein the forming of the sheet metal panel assembly (2) is suspended or a bending radius is formed into the sheet metal panel assembly (2) when partially welded end faces pass through the bending section.
Owner:HAUSLER HLDG AG

Furniture metal sheet welding process based on multi-section compression anti-warping structure

The application relates to the technical field of metal welding, and discloses a furniture metal sheet welding process based on a multi-section compression anti-warping structure, which comprises the following steps: S1, checking the sheet material, thickness and surface state, making the sheet material meet the requirements, and clearly defining the weld position and length; S2, using the methods of chemical cleaning, mechanical polishing and sand blasting to remove the oil stains, rust, oxide scale impurities on the surface of the metal sheet, making the surface expose the metal luster, and ensuring the welding quality. The furniture metal sheet welding process based on the multi-section compression anti-warping structure can effectively solve the problems in the prior art that plastic deformation is caused during the welding of the metal sheet, and then the sheet appears the warping phenomenon; the warping can make the welded metal sheet deviate from the originally designed size specification, causes the poor cooperation in the subsequent assembly process, increases the assembly difficulty and cost, and even causes the problem that the whole product cannot be normally assembled.
Owner:DONGGUAN JIASI FURNITURE CO LTD

Cutting and welding device for machining metal parts of medical apparatuses and instruments

The invention relates to the technical field of medical instrument machining, in particular to a cutting and welding device for medical instrument metal part machining, which comprises a machining table, a welding main body and a cutting main body, and the welding main body and the cutting main body are both mounted on the machining table; the welding main body is used for welding a metal piece; the cutting main body is used for cutting a metal piece; a switching mechanism is arranged on the machining table and used for conducting action switching on the welding body and the cutting body. The cutting and welding procedures are completed through reciprocating motion, the transfer process can be effectively reduced, manual operation is reduced, the working efficiency is improved, the welding procedure and the cutting procedure are switched in the conveying process of the metal parts, the time spent on manual switching of the procedures can be effectively shortened, and the machining efficiency can be effectively improved.
Owner:NANTONG KANGSHENG MEDICAL EQUIP

Laser welding equipment for welding irregular metal parts

The utility model discloses laser welding equipment for welding irregular metal parts, which comprises a processing chassis, a fixing hole is arranged at the top of the processing chassis, a rotating cylinder is fixedly mounted at the bottom of the fixing hole on the processing chassis, and a rotating plate is movably arranged at the top of the rotating cylinder. An arc-shaped supporting seat is fixedly mounted at the top of the rotating plate through bolts, a rotating assembly for welding metal parts is arranged on the arc-shaped supporting seat, a fixed sliding groove is formed in the top of the arc-shaped supporting seat, an arc-shaped rack is connected to the arc-shaped supporting seat through the fixed sliding groove, and an adjusting frame is connected to one side of the arc-shaped rack through a supporting plate; an adjusting block drives an electric telescopic rod below an adjusting plate to horizontally move through an adjusting rod and an adjusting groove in the moving process, position adjustment of a laser welding head is achieved, the structure is simple and stable, the angle of the laser welding head is adjusted in a multi-angle mode, and the laser welding head can meet the requirement for welding of metal parts of different rules.
Owner:HANGZHOU CHENXING PRECISION MASCH CO LTD

Positioning tool for welding metal plates of multiple specifications

The utility model discloses a positioning tool for welding metal plates of multiple specifications, which comprises a support frame, a sliding through groove is arranged on the support frame and is used for installing a fixed guide rail, the fixed guide rail comprises a first guide rail and a second guide rail which are arranged above the support frame in parallel, and the positioning tool further comprises limiting holes which are arranged on the fixed guide rail at equal intervals and are used for fixing the first guide rail and the second guide rail. The supporting frame is connected with the fixed guide rail through an internal reinforcing assembly, and limiting blocks are arranged on the sides of the first guide rail and the second guide rail. Threaded bolts in the limiting blocks are fixed to the fixed guide rails, and limiting assemblies are installed on the inner sides of the limiting blocks through limiting rods. According to the positioning tool for welding the metal plates of the multiple specifications, due to the fact that specifications of existing metal plate samples are not uniform, the positioning tool can conveniently move in the transverse direction and the longitudinal direction, meanwhile, automatic positioning is facilitated after the positioning tool moves, the structure is simple, operation is convenient and fast, the four corners of each metal plate can be pressed and limited, and the positioning stability is improved.
Owner:ANYANG IRON & STEEL GRP +2

Deposited metal diffusible hydrogen mercury method detection device

The invention discloses a mercury method detection device for deposited metal diffusible hydrogen, relates to the technical field of diffusible hydrogen detection, and aims to solve the problem that the detection efficiency, the operation convenience and the safety are difficult to guarantee by adopting a mercury method in the prior art. The device comprises a detection mechanism, a sample collecting and placing mechanism, a vacuum mechanism, a mercury storage mechanism, a control end and a sealed ventilation cabinet, the detection mechanism is used for collecting and detecting diffusible hydrogen; the sample receiving and placing mechanism is used for realizing automatic operation of sample taking and placing, lifting and positioning; the vacuum mechanism is used for providing a vacuum environment for diffusible hydrogen collection; and the mercury storage mechanism is used for storing, conveying and recycling mercury. The method has the advantages that the detection efficiency, the operation convenience and the safety are improved.
Owner:PABO TESTING TECH SERVICE CO LTD

Movable weld metal polishing device

The utility model relates to a movable weld metal polishing device which comprises a platform and a polishing moving trolley, the platform is matched with the polishing moving trolley, the polishing moving trolley comprises a balance weight seat and a driving mechanism, bottom wheel frames are oppositely arranged on the two sides of the lower surface of the balance weight seat, and a plurality of electric wheels are arranged at the bottoms of the bottom wheel frames. Side wheel frames are arranged on the bottom wheel frames through telescopic mechanisms, a plurality of limiting wheels are arranged on the side wheel frames, the limiting wheels on the two sides are oppositely and inwards arranged, a rotating shaft is connected to the balance weight seat through a lifting mechanism, grinding rollers are arranged on the two sides of the rotating shaft, and the driving mechanism is connected between the rotating shaft and the lifting mechanism and can drive the grinding rollers to rotate through the rotating shaft. The device can move in the length direction of the beam column of the box type steel structure and grind welding metal on the protruding portion on the side face of the beam column of the box type steel structure, the grinding efficiency is high, the labor force is relieved, and the labor cost is further saved.
Owner:HANGXIAO STEEL STRUCTURE (HAINAN) CO LTD

Large friction stir welded metallic components

A method is provided for forming a large metallic component using a friction stir welded blank. A first and second metallic plate are positioned in an abutting arrangement with corresponding faying surfaces. A backing plate is attached across the abutment. The plates are friction stir welded along the faying surfaces, the friction stir weld including a weld root that terminates in the backing plate. After welding, the backing plate is removed, including the weld root, to create a welded blank. The blank is then formed into a desired component shape, heat treated and aged to produce the final large metallic component. The resulting friction stir weld has a stable microstructure with minimal or no abnormal grain growth during high-temperature forming, heat treatment, or aging.
Owner:STANDEX INTERNATIONAL CORP

Connection structure for earthquake observation cave weak signal transmission line

The utility model belongs to the technical field of seismological observation, and particularly discloses a connecting structure for seismological observation cave weak signal transmission lines, which comprises a sleeve shell and a shaping chamber, the shaping chamber is arranged between material guide grooves in the sleeve shell, three groups of wire inlets are arranged in the right side of the sleeve shell, and the right side of the sleeve shell is provided with three groups of wire outlets. An upper wire harness is transversely inserted into the top end of the interior of the sleeve shell, and a middle wire harness is transversely inserted into the center of the interior of the sleeve shell. According to the connecting structure for the earthquake observation cave weak signal transmission line, the metal ring is fixedly connected in the annular groove, the metal rod serves as a tool for sealing and balancing the metal ring to be welded, the inner side wall of the metal ring is clamped in the annular groove of the rubber sleeve, and the front end and the rear end of the bottom of the metal ring are fixed through the supporting rod and the foot pad. And when lightning stroke occurs, electric power can be conducted into soil by virtue of an electricity leading mechanism formed by the metal rod, the metal ring and the supporting rod, so that the problem of lack of lightning stroke protection is solved.
Owner:YUNNAN SEISMOLOGICAL BUREAU

Prefabricated window lower wall of CL structure system

The invention relates to the technical field of CL structure system prefabricated window lower walls, in particular to a CL structure system prefabricated window lower wall which comprises a heat preservation plate, a front face concrete layer, a back face concrete layer and a top face concrete layer are distributed and poured on the front face, the back face and the top face of the heat preservation plate, and the front face concrete layer, the top face concrete layer and the back face concrete layer are sequentially connected. Welding metal meshes which are sequentially connected are arranged in the front concrete layer, the top concrete layer and the back concrete layer, a plurality of L-shaped exhaust pipes are arranged on the lower portion of the heat preservation plate, and one ends of the L-shaped exhaust pipes penetrate through the heat preservation plate and communicate with the outside. And the other end of the L-shaped exhaust pipe penetrates through the front concrete layer or the back concrete layer and is communicated with the outside.
Owner:山东航空学院

Heating assembly forming equipment for diffusion welding equipment and mounting method

The invention relates to the technical field of diffusion welding equipment production, in particular to heating assembly forming equipment for diffusion welding equipment and a mounting method.The heating assembly forming equipment comprises conveying equipment and welding equipment and further comprises an assembling mechanism, and the assembling mechanism is arranged behind the conveying equipment and used for fixing and assembling a heating pipe; comprising a shaping assembly used for recarving heating furnace latches and a fixing assembly matched with the shaping assembly to fix a heating coil and directionally bend a welding metal wire. And the merging mechanism is used for transferring the welded heating pipe and realizing series connection with the heating pipe on the adjacent side. The technical problem of contradiction between production convenience and installation difficulty of the heating assembly is solved.
Owner:ZHEJIANG MINGXIN HEAT TREATMENT EQUIP CO LTD