635results about "Electron beam welding apparatus" patented technology

The present invention relates, inter alia, to a laser welding device (10) which is provided for welding workpieces (90, 91) under negative pressure, preferably in a vacuum, comprising a laser device (11) which is configured to generate and couple a processing laser beam (13) into a welding zone (17) of the laser welding device (10), comprising a first process chamber (30) which is provided in the beam direction (13a) of the processing laser beam (13), in particular in front of the welding zone (17), comprising a first process chamber closure (31) facing the laser device (11), a second process chamber closure (32) facing the welding zone (17), in which in particular an exit opening (32a) for the processing laser beam (13) into the welding zone (17) is formed, and a lateral third process chamber closure (33) extending between the first (31) and second (32) process chamber closures,wherein the laser device (11) is movable relative to the welding zone (17) in a defined welding direction (18). To enable laser welding under negative pressure, in particular in a vacuum, even for large workpieces, the laser welding device (10) is characterized in that at least one first gap-covering device (50) is provided, which is configured to cover a gap (92) between the workpieces (90, 91) to be welded and / or a gap (36) in the first process chamber (30), that the first gap-covering device (50) is provided above the welding zone (17), that the first gap-covering device (50) has a first gap-covering element (51) whose orientation with respect to the welding direction (18) is at least partially variable,that the first gap covering device (50) cooperates with the laser device (11) or the first process chamber (30) and that the first gap covering device (50) is provided in front of the laser device (11) or in front of the first process chamber (30) in the welding direction (18).

The invention relates to the field of intelligent welding processes and control, and discloses a welding method for a superhard material sealing body multilayer structure. Comprising the steps of obtaining multilayer structure data, and generating a three-dimensional digital model; energy input parameters are optimized according to the heat affected zone and the stress concentration zone, and an initial energy tuning parameter set is generated; according to the initial energy tuning parameter set, temperature field data and stress field data in the welding process are collected, and the dynamic heat affected zone change trend is obtained; according to the change trend of the dynamic heat affected zone, adjusting energy input and a scanning path, and generating a corrected energy tuning parameter; controlling depth distribution of energy in the multilayer structure according to the corrected energy tuning parameters to obtain fusion depth and heat affected zone distribution; energy input and scanning speed are adjusted according to the fusion depth and the heat affected zone distribution, and an energy input parameter set is generated. The precision of energy control in the welding process is improved.

Disclosed is a battery module improved in efficiency of resistance welding and bonding reliability. The battery module includes a plurality of secondary batteries, each having electrode terminals; a module housing having an inner space configured to accommodate the plurality of secondary batteries; and a bus bar including a body portion having a metal plate configured to electrically connect the plurality of secondary batteries to each other and a connection portion extending from the body portion to contact the electrode terminal. Each of the first connection portion, the second connection portion, and the third connection portion has at least one welding point.

The invention discloses a dynamic regulation and control device and method for aluminum alloy electron beam welding residual stress, and belongs to the technical field of electron beam machining, and the device integrates a multi-sensing information acquisition system, a vibration system and a control system. The sensing information acquisition system measures the surface residual stress of a welding seam and a heat affected zone in real time and in situ in the welding process through a vacuum compatible X-ray probe and a detector, compares the predicted stress with a target value, and generates a regulation and control instruction of electron beam welding parameters through the control system; the electron beam welding behavior is adjusted in real time to dynamically control stress, and the vibration system is used for applying high-frequency micro-amplitude vibration to a local high-stress area of a weldment to promote residual stress release. The device integrates monitoring, regulation and stress release functions in a vacuum environment, can remarkably reduce welding residual stress and improve welding seam quality, and is particularly suitable for electron beam welding of large thin-wall aluminum alloy structural parts.

The invention relates to a manufacturing method of a duplex stainless steel and carbon steel asymmetrically rolled composite plate. Stainless steel is any one of duplex stainless steel. The medium carbon steel is any one of plain carbon steel, low-carbon steel and alloy steel. The manufacturing method of the asymmetric composite blank of the duplex stainless steel and the carbon steel comprises the following steps: 1, preparing raw materials for assembling the blank; 2, pretreating the stainless steel middle plate; and 3, surface treatment of the assembly raw material. And 4, cleaning. And 5, assembling. And 6, vacuum chamber electron beam seal welding. And 7, composite blank welding seam detection. And 8, heating the composite blank. And 9, rolling the composite plate. And 10, laminar cooling. And 11, the composite blank has no cracking phenomenon in the heating and rolling processes, the interface shear strength tau after hot rolling is larger than or equal to 280 MPa, the interface bonding rate is 100%, the bonding performance is good, and the proportion of dual-phase steel ferrite is 40-60%.

The invention belongs to the related technical field of additive manufacturing, and discloses an electron beam melting wire liquid nitrogen copious cooling additive manufacturing method and system.The method comprises the steps that in the electron beam melting printing forming process, liquid nitrogen is sprayed to a molten printing wire under electron beam irradiation, and the liquid nitrogen is sprayed to the molten printing wire; the molten printing wires are subjected to nitridation reaction under the action of electron beams while being subjected to liquid nitrogen cryogenic cooling, so that the crystal structure of a formed part is regulated and controlled, and the mechanical performance is enhanced; and / or liquid nitrogen is sprayed to the printing wire material which begins to be solidified, so that the printing wire material is subjected to liquid nitrogen deep cooling, and the crystal structure of the formed part is regulated and controlled to achieve mechanical property enhancement. Liquid nitrogen is introduced into the electron beam additive manufacturing device for deep cooling, the extruded printing wire is solidified at an extremely high cooling speed after being melted, a large number of homogeneous nucleation sites are formed in a melting area due to the high supercooling degree, the solidification speed is high, a microstructure is customized into uniform and fine equiaxed crystals, the strength and toughness of the material are improved, and the production cost is reduced. The mechanical property is improved.

The present invention generally relates to methods and apparatuses adapted to perform additive manufacturing (AM) processes and the resulting products made therefrom, and specifically, to AM processes that employ an energy beam to selectively fuse a base material to produce an object. More particularly, the invention relates to methods and systems that use reactive fluids to actively manipulate the surface chemistry of the base material prior to, during and / or after the AM process.

The invention relates to an alloy having the following composition, by weight:16.5%≤Cr≤25.%11.%≤Mo≤18.%2.%≤W≤7.%Fe≤1.%Mo+W≤-0.5×(Cr+Fe)+30⁢%Mo+W≥-0.5×(Cr+Fe)+25⁢%Ti+Ta≤0.8%0.01%≤Si≤0.75%0.01%≤Al≤0.35%0.01%≤Mn≤0.35%Ca≤0.005%Mg≤0.005%Nb≤0.01%0.001%≤C≤0.05%0.001%≤N≤0.05%S≤0.003%P≤0.005%optionally, 0.0010%≤rare earths≤0.015%, the silicon content being less than or equal to 0.25% in the presence of rare earths at a content comprised between 0.0010% and 0.015%,the rest being nickel and unavoidable impurities resulting from the manufacturing, the nickel content being greater than or equal to 54%.

The application provides a one-time forming electron beam welding method for a titanium alloy component with single-sided incidence and double-layer welds, which comprises the following steps: a closed cavity structure titanium alloy component is formed by a plurality of mutually shielded multi-layer thin plates through single-direction electron beam incidence; the focusing current of the electron beam is adjusted; the converging effect of the electromagnetic coil is changed to change the focus position, and then the electron beam keyhole depth and size are changed; the keyhole is adjusted to be an energy channel through which the electron beam passes; the electron beam energy can pass through the first layer of welds to reach the second layer of welds; the controllable linear energy is provided by combining the acceleration voltage, the welding current and the welding speed to ensure that the remaining energy that penetrates reaches the second layer of welds to complete the welding of the second layer of welds again; the low-frequency scanning is combined with the electron beam movement to drive the first layer of molten pool metal to flow and fill the rear channel, and the front channel is opened, so that the channel is dynamically smooth and stable, and the electron beam keyhole effect behavior is adjusted.

Provided is a means to suppress a decrease in the amount of thermal strain when production line speed is increased, and to both improve production efficiency and stabilize an iron loss improvement effect during operation. The means is a method of surface processing a metal material or a metal sheet including irradiating the surface of the metal material or the metal sheet with an energy beam under at least two focus settings.

The invention discloses a vacuum electron beam welding method for a titanium alloy structural part, and belongs to the technical field of aero-engine manufacturing. The method comprises the following steps: cleaning stains on the surface of a to-be-welded structural member; an oxidation film on the surface of the to-be-welded structural part is cleaned, and a by-product layer formed when the oxidation film is cleaned is removed in a mechanical mode; residual pollutants generated when the surface of the to-be-welded structural part is cleaned in a mechanical mode are removed, and pre-welding cleaning is completed; when the cleaned structural part to be welded is placed in a vacuum chamber of a vacuum electron beam welding machine to be welded, small-beam preheating is conducted firstly; formal welding is carried out according to pre-optimized welding parameters, and electron beam dynamic deflection is increased in the welding process. The method can reduce air hole defects in welding seams, improve the comprehensive mechanical performance of welding joints, and meet the design requirements of aeroengine component welding joints.

The invention belongs to the technical field of metal welding, and particularly relates to an electron beam welding method for molybdenum and molybdenum alloy medium and thick plates. A vacuum electron beam welding machine is used for carrying out right-angle double-face tailor welding on corrosion-resistant molybdenum and molybdenum alloy medium-thickness plates with the thickness ranging from 5 mm to 50 mm in the chemical field. Through the fixing modes of assembling and designing the welding tool and the like, the problem of electron beam welding cracking caused by deformation is avoided. In addition, by controlling electron beam welding parameters, the high-temperature nitrogen oxidation risk in the molybdenum and molybdenum alloy plate welding process is reduced, and welding tip air holes are reduced. The implementation of the method can provide guidance for welding engineering application of the corrosion-resistant molybdenum plate in the field of chemical engineering.

The invention relates to the technical field of nuclear fusion, and particularly discloses a high strength and toughness matched nitrogen control type low activation steel thick plate electron beam welding method which comprises the following steps: S1, flaw detection and grinding are performed on a thick plate to be welded; s2, demagnetization and surface cleaning are carried out; s3, an arc suppression plate and an arc striking plate are machined, the arc suppression plate and the arc striking plate are fixed to the two ends of the gap formed by the thick plate to be welded, and a plate to be welded is obtained; s4, the plate to be welded is fixed to a welding tool, and the welding tool is pushed into an electron beam welding vacuum chamber; s5, the plate to be welded is sequentially subjected to symmetrical positioning welding and symmetrical filling welding, and a welded plate is obtained; and S6, postweld heat treatment is conducted. By means of the characteristics that electron beam welding is high in penetrability, high in welding speed, high in welding joint quality in the vacuum environment and the like, the welding efficiency is high, welded plates are stable in performance and have high strength and toughness matching, and the welding quality is guaranteed.

The invention provides an ultrathin-wall niobium-tungsten alloy and titanium alloy dissimilar metal electron beam welding method which comprises the following steps: step 1, cleaning the to-be-welded parts of niobium-tungsten alloy and titanium alloy by using absolute ethyl alcohol, and then drying; step 2, assembling; the niobium-tungsten alloy and the titanium alloy part are in butt joint and fixed; 3, vacuum electron beam welding is used for positioned welding; and 4, formal welding is conducted. After welding, the surface of a welding seam is formed well, good metallurgical fusion is achieved, and the welding seam welded through a vacuum electron beam meets the QJ 20622-2016 I-level standard; under the room temperature condition, the tensile strength of the welding seam reaches 80% of that of titanium alloy base metal; a hydraulic strength test is carried out on a welding seam, and the welding seam is free of leakage and deformation when the pressure is maintained for 5 minutes under 4.1 MPa. An airtight test is carried out on a welding seam, the requirement that air leakage is avoided under the pressure of 3 MPa for 5 min is met, and the design structure size is promoted to continuously break through in the miniaturization and precision direction.

The invention discloses a 30CrMnSi alloy steel electron beam welding method and application thereof, and relates to Cr-Mn-Si alloy steel electron beam welding, and the 30CrMnSi alloy steel electron beam welding method specifically comprises the steps that a plurality of sections of cleaned to-be-welded parts are assembled in pairs to form to-be-welded weld joints, and the to-be-welded weld joints are subjected to section welding; electron beam scanning preheating is conducted on the to-be-welded weld joint after segment welding; the preheated to-be-welded weld joint is subjected to seal welding, and the focusing current is set to be in a surface focusing state during seal welding; welding the to-be-welded weld joint after seal welding, wherein the focusing current is set to be in a lower-focus state during welding; and performing modification welding on the welded weld joint, wherein the focusing current is set to be in an upper-focus state during modification welding. According to the method, under the cooperative treatment of electron beam scanning preheating, seal welding, welding and modification welding on the weld joint to be welded, the smooth weld joint without cracks, splashing and pits is finally obtained, so that the workpiece to be welded can reach the GJB-1718A standard, and the requirement for nondestructive testing of the I-level weld joint of pressure-bearing equipment is met.

The invention discloses a high-flux gradient deposition method based on additive manufacturing, and belongs to the technical field of additive manufacturing. The invention aims to solve the problems that the existing additive high-flux preparation efficiency is low, and microelement regulation and control are difficult to realize by an electron beam fuse technology. The method comprises the following steps: 1, establishing a three-dimensional model by using three-dimensional modeling software; designing alloy components of the three-dimensional model, wherein the alloy components comprise a printed component interval and a deposition layer number; 2, calculating and setting the relative feeding rate of the inner wire and the outer wire in each component interval in the printing process; 3, printing; and 4, adjusting the relative feeding rate of the inner wire and the outer wire in the printing process to realize component change between different layers. According to the method, through the mode that inner wire feeding and outer wire feeding of the electron beam fuse deposition technology are combined, microelements of the electron beam fuse additive can be regulated and controlled, the flexibility of electron beam fuse additive manufacturing is improved, and the application range of the electron beam fuse additive manufacturing is widened; the problems that an existing additive high-flux preparation efficiency is low, and microelement regulation and control are difficult to achieve through an electron beam fuse technology are solved.

The invention belongs to the technical field of material processing and welding, and provides an electron beam welding method for a fragile material, which comprises the following steps of: dividing a first stress regulation and control area covering a welding joint and a second stress regulation and control area positioned on the outer side of the first stress regulation and control area on a to-be-welded workpiece; differential heating is conducted on the two areas, so that the heating temperature of the second area is higher than that of the first area; based on the heating temperature of the first stress regulation and control area, welding parameters are determined by adopting a method of combining parameter calculation and test welding verification; welding operation is conducted in a dynamic beam adjusting mode according to the welding parameters; and performing scanning heating on a welding seam area after welding to realize cold treatment. According to the method, welding cracks of the fragile material are fundamentally restrained through an active stress regulation and control mechanism, meanwhile, the preheating process is optimized, assembly deformation caused by overall high temperature is avoided, and high-quality and high-efficiency welding is achieved in combination with a welding parameter confirmation and forming control method.

The invention discloses an electron beam welding method for a molybdenum alloy / niobium alloy dissimilar material with a preset middle layer. The electron beam welding method aims at solving the problem that solid crack defects exist in existing electron beam welding for the molybdenum alloy / niobium alloy dissimilar material. The electron beam welding method comprises the steps that firstly, the to-be-welded faces of the to-be-welded molybdenum alloy part, the to-be-welded niobium alloy part and the to-be-welded Re middle layer are mechanically polished and cleaned after being polished; secondly, the Re middle layer is placed between the to-be-welded faces of the clean molybdenum alloy part and the niobium alloy part to form a welding assembly; thirdly, welding parameters are set; and fourthly, electron beam welding is conducted. According to the method, the Re intermediate layer is adopted to carry out electron beam welding on the molybdenum alloy / niobium alloy, the characteristic that Re can improve the toughness of the molybdenum alloy is utilized, the metal brittleness of a weld joint is reduced, the crack tendency of a joint is greatly reduced, and a crack-free and high-strength molybdenum alloy / niobium alloy dissimilar material electron beam welding joint is obtained.

The dual focused ion beam and scanning electron beam system includes an electron source that generates an electron beam and an ion source that generates an ion beam. The electron beam column directs an electron beam at a normal angle relative to a top surface of the stage. An ion beam column directs the ion beam at the stage. The ion beam is at an angle relative to the electron beam. A detector receives the electron beam reflected from the wafer on the stage.

The present application belongs to the field of ground simulation facilities, and particularly relates to a gravity level ground simulation device and method for extraterrestrial environment welding. The device comprises a general control system, a vacuum system, an outer pipe assembly and a gravity level control mechanism. The general control system can control various parameters during the operation of the device. The vacuum system and the gravity level control mechanism provide two space environment characteristics of high vacuum and different levels of gravity for experiments requiring space simulation. The vacuum degree in the device can reach 10 ‑4 Pa, which can simulate the high vacuum environment in space. The adjustment of different gravity levels of 0-4g0 can ensure that the device has the ability to simulate the gravity of various extraterrestrial planets. Moreover, the device has the advantages of flexible and stable gravity level, high experimental repetition rate, low cost, high safety, etc. and can be used to study the basic welding theory under different gravity levels in space environment, thereby filling the blank of the gravity level ground simulation device specially used for extraterrestrial environment welding.

We describe a system for use in an apparatus for producing a three-dimensional workpiece using an additive layer manufacturing technique, the system comprising: an irradiation unit configured to selectively irradiate an irradiation plane with an irradiation beam, and a control unit coupled to the irradiation unit and configured to control the irradiation unit to modulate, as a function of a local process parameter when producing the three-dimensional workpiece, an irradiation beam property of the irradiation beam.

The present invention relates, inter alia, to a laser welding device (10) which is provided for welding workpieces (90, 91) under negative pressure, preferably in a vacuum, comprising a laser device (11) which is configured to generate and couple a processing laser beam (13) into a welding zone (17) of the laser welding device (10), comprising a first process chamber (30) which is provided in the beam direction (13a) of the processing laser beam (13), in particular in front of the welding zone (17), comprising a first process chamber closure (31) facing the laser device (11), a second process chamber closure (32) facing the welding zone (17), in which in particular an exit opening (32a) for the processing laser beam (13) into the welding zone (17) is formed, and a lateral third process chamber closure (33) extending between the first (31) and second (32) process chamber closures,wherein the laser device (11) is movable relative to the welding zone (17) in a defined welding direction (18). To enable laser welding under negative pressure, in particular in a vacuum, even for large workpieces, the laser welding device (10) is characterized in that at least one first gap-covering device (50) is provided, which is configured to cover a gap (92) between the workpieces (90, 91) to be welded and / or a gap (36) in the first process chamber (30), that the first gap-covering device (50) is provided above the welding zone (17), that the first gap-covering device (50) has a first gap-covering element (51) whose orientation with respect to the welding direction (18) is at least partially variable,that the first gap covering device (50) cooperates with the laser device (11) or the first process chamber (30) and that the first gap covering device (50) is provided in front of the laser device (11) or in front of the first process chamber (30) in the welding direction (18).

The invention discloses an electron beam wire feeding welding method for a high-performance titanium alloy thick-wall component, and belongs to the technical field of metal material welding. The method aims at solving the typical metallurgical defects such as composition segregation, air holes and incomplete penetration which are prone to occurring in the welding process. The method comprises the steps that firstly, a steep-edge V-shaped groove with a truncated edge is machined in the welded end face of base metal, and the steep-edge V-shaped groove is polished, soaked in acid and then washed with absolute ethyl alcohol; and step 2, fixing on a welding platform, and carrying out multi-layer and multi-pass electron beam wire feeding welding. According to the electron beam wire feeding welding method, a feasible and generalizable technical path is provided for high-quality welding of the high-performance titanium alloy thick-wall component, a theoretical basis and practical guidance are provided for structure regulation and performance optimization in the welding process, and the electron beam wire feeding welding method has important engineering application value and industrial popularization prospects.

The present invention has the following composition by mass: 16.5%≦Cr≦25.0%; 11.0%≦Mo≦18.0%; 2.0%≦W≦7.0%; Fe≦1.0%; Mo+W≦-0.5×(Cr+Fe)+30%; Mo+W≧-0.5×(Cr+Fe)+25%; Ti+Ta≦0.80%; 0.01%≦Si≦0.75%; 0.01%≦Al≦0.35%; 0.01%≦Mn≦0.35%; Ca≦0.005%; Mg≦0.005%; Nb≦0.0 1%; 0.001%≦C≦0.05%; 0.001%≦N≦0.05%; S≦0.003%; P≦0.005%; optionally 0.0010%≦Rare Earths≦0.015%, wherein the silicon content is less than or equal to 0.25% in the presence of rare earths in amounts between 0.0010% and 0.015%, the remainder being nickel and unavoidable impurities resulting from processing, and the nickel content is greater than or equal to 54%.

The present disclosure relates to a method of manufacturing a display device, including: a step of disposing a plurality of cells on a carrier substrate, the plurality of cells including a substrate including a display area and a non-display area surrounding at least a portion of the display area; a step of forming a thin film encapsulation layer including at least one inorganic encapsulation layer and at least one organic encapsulation layer in each of the plurality of cells; a step of checking whether foreign matter is contained in the thin film encapsulation layer; a step of irradiating laser light along a first irradiation path on a first portion corresponding to the non-display region of the thin film encapsulation layer containing the foreign matter; a step of irradiating laser light along a second irradiation path on a second portion corresponding to the display area of the thin film encapsulation layer; and a step of separating the at least one inorganic encapsulation layer and the at least one organic encapsulation layer of the thin film encapsulation layer containing the foreign matter from each other, and the first irradiation path includes at least one linear path and at least one curved path, and the second irradiation path includes at least one linear path.

The present invention provides metal mask foil, a manufacturing method thereof, and a manufacturing device thereof. The metal mask foil includes at least two pieces of sub-foil, where the pieces of sub-foil are disposed side by side in a width direction, and long edges in contact between two adjacent pieces of sub-foil are welded together; and a target width T of the metal mask foil and an average value t of initial widths of the pieces of sub-foil meet: T / n ≤ t < T, n being a quantity of the pieces of sub-foil that form the metal mask foil. In technical solutions of the present disclosure, raw foil pieces of a conventional width are joined together by welding to manufacture metal mask foil of a larger width, which avoids technical bottlenecks such as limitation by equipment on production of a metal mask of a large width by conventional continuous casting and rolling, causing huge invested costs, and a bad shape of an edge of a raw material caused by a larger width of the raw material, thereby implementing low-cost and high-quality production of metal mask foil of a large width.

A method for joining a first component (12) and a second component (14) using an electron beam (34) is described. The first component (12) and the second component (14), as well as a filler wire (30), are provided, wherein the first component (12) and the second component (14) form a joining zone (16) which includes a gap (18) located between the first component (12) and the second component (14). Furthermore, the first component (12) and the second component (14) are joined by means of the electron beam (34) by means of at least partial bridging of the gap (18), wherein the electron beam (34) is guided along an irradiation pattern (44), and wherein the filler wire (30) is used in the material-joining of the first component (12) and the second component (14).Furthermore, a device (10) for joining a first component (12) and a second component (14) is presented, which is set up to carry out such a procedure.

The present invention relates to a tantalum alloy welding method, comprising: splicing two tantalum alloy plates A1 and A2 to be welded to obtain a gap B1 to be welded; pre-processing the two tantalum alloy plates A1 and A2 along the position of the gap B1 to be welded, wherein the pre-processing method is as follows: adjusting the width of the gap to be welded between the tantalum alloy plates A1 and A2, drilling holes in the splicing surfaces of the tantalum alloy plates A1 and A2 along the thickness direction, wherein the diameter of the drilled holes is 0.5 mm to 1 mm larger than the adjusted width of the weld, and the depth of the drilled holes is equal to the thickness of the tantalum alloy plates A1 and A2; inserting a tantalum alloy welding rod of the same material into the drilled gap, reducing the width between the welding rod and the plates, thereby obtaining a new gap B2 to be welded; using electron beam welding to weld the new gap B2 to be welded; and completing the welding to obtain a tantalum alloy plate welded part. The present invention has the advantages of high welding strength, good sealing performance, and low residual stress, and can achieve reliable connection of tantalum alloys.

The invention relates to a method for welding conductor ends to be carried out during the mass production of components of an electric machine, the conductor ends being arranged on the components in a conductor end array, comprising: A) determining the positions of the conductor ends to be welded of the conductor end array; b) arranging a welding medium at the end of the conductor to be welded according to the position determined in step A). Step A) is carried out by the following steps: a) carrying out a non-contact position detection for detecting the position of the conductor ends to be welded of the array of conductor ends, b) if a position has been detected in step a), determining the detected position as the position for carrying out step B), and storing the detected position for the predetermined conductor ends; and c) if no position is detected in step a), determining the position for carrying out step B) as a function of at least one position pre-stored for the predetermined conductor end to be welded.