1165 results about "Electron beam welding" patented technology

A semiconductor wafer support assembly and method of fabricating the same are provided. In one embodiment, the method and resulting assembly include attaching a pedestal joining-ring to a bottom surface of a ceramic puck. Low temperature brazing a composite cooling plate structure to the bottom surface of the ceramic puck, where the pedestal joining-ring circumscribes the composite cooling plate structure. Thereafter, a pedestal is electron-beam welded to the pedestal joining-ring.

A method for manufacturing a near net-shape mold from a weldable material, including creating a computer model of a mold portion (30,32), analytically sectioning the computer model of the mold portion into a plurality of mold zones (22), generating mold zone cutting paths for a cutting machine to follow, cutting the weldable material into plurality of mold zones, generating surface profile cutting paths for a cutting machine to follow, machining surface profiles into the mold zones, assembling the mold zones by placing the mold zones side-by-side, generating welding paths for an electron beam welding a machine to follow, and welding the mold zones together.

Spinal stabilization devices, systems and methods are provided that include a spring junction wherein a structural member is mountable to a spine attachment fastener and a resilient element is affixed to the structural member along an attachment region of the resilient element. The attachment region is disposed physically separately with respect to an active region of the resilient element. The attachment region can include a weld region produced via an E-beam welding process involving temperatures of 1000° F. or greater, wherein a heat-affected zone adjacent the weld region is disposed physically separately with respect to the active region. The resilient element may be a coil spring including bend regions adjacent its outermost (i.e., last) coils wherein the material of the coil spring initially bends away from the last coil, then bends back toward the last coil before terminating near the last coil.

The invention relates to a process for producing an ultra-thick plate and belongs to the field of rolling and producing an ultra-thick steel plate in the metallurgical industry. The invention mainly overcome the defect of producing the ultra-thick steel plate by a traditional model casting manufacturing blank and an electro-slag remelting manufacturing blank. The method comprises the following steps: cutting and fixing lengths of the blanks, mechanically conditioning the blanks (eliminating, leveling and cleaning a single-surface oxide layer of a casting blank with a milling machine, a planer or a shot blast); clamping an assembly (relatively superposing the cleaning surfaces of the two blanks after processing, placing the two blanks oppositely and clamping the blanks); mounting the blanks in a vacuum chamber of an electronic beam welding machine for purpose of vacuuming; sewing the assembly on the electronic beam welding seal edge, heating the assembly in a furnace and rolling the assembly through temperature control; and then producing the ultra-thick steel plate. Compared with the traditional electro-slag remelting production process, the process has the advantages of high production efficiency, reduced electric power consumption, less investment of production devices and low production cost. Compared with the traditional die casting production process, the process solves the problem of segregation and looseness of a large-scale die casting ingot center part; the finished product ratio is high; and the finished product ratio of blank assembly is over 90 %.

The invention discloses a fan casing assembly welding method and a tool for the fan casing assembly welding method and belongs to the technical field of the welding technology. By the adoption of the fan casing assembly welding method and the tool for the fan casing assembly welding method, the problems that in the welding process, the weld joint forming quality is poor, root reinforcement exists on a weld joint, deformation is serious, dimension errors are large and blade protection is difficult are solved. The fan casing assembly welding method comprises the following steps of preparation before welding, positioning, assembly of a baffle, electron beam welding, inspection after welding, assembly of a heat treatment tool and vacuum heat shaping. The baffle is composed of an upper plate and a lower plate. The fixing tool for welding comprises a base plate, a shaft, a gland, a positioning ring, a supporting ring and a plurality of pressing plates. The heat treatment tool comprises a base plate, a cover plate and a plurality of pressing blocks.

The invention relates to the technical field of welding, in particular to a method for controlling deformation of a nickel-based ageing-strengthening high-temperature alloy casing welding assembly, and a piece of technological equipment of the method. According to the method, the welding deformation is controlled by using rigid limit of materials with close linear expansion coefficients, a tooling structure that can meet rigid supporting requirements during welding as well as control and eliminate residual stress deformation during welding is adopted, after an inner ring and eight T-shaped supporting plate components form an eight-diagram structure, a heat treatment process at the temperature of 550 DEG C for eliminating stress is additionally performed so as to reduce residual stress between the inner ring and the roots of the supporting plates before electron beam welding; after all welding processes are completed, a vacuum solution treatment process at the temperature of 970 DEG C is additionally performed, and a double aging treatment process at the temperature of 720 DEG C and 620 DEG C is further additionally performed to completely eliminate residual internal stress after welding so as to achieve service performance. According to the invention, the problems that the conventional combustion engine can not control fatigue crack, and requirements on the reliability and the service life of the combustion engine can not be met are solved; by adopting the novel welding technology method and the technological equipment, the investment is small, the operation is simple and the engineering application is facilitated.

The invention relates to a vacuum electric beam welding method of a thin wall titanium alloy component which suits for the TC11 material component with 1.5í½3.4mm wall thickness. It is characterized in that the parameter of the vacuum electric beam welding craft is that positioning weld: even positioning with the accelerate voltage 150kv, the working muzzle distance 200-1200mm, the welding speed 8.3mm/s, and the welding beam current 2.5mA; the sealed weld: the accelerate voltage 150kv, the working muzzle distance 200-1200mm, sway wave shape triangle wave, the sway frequency 20Hz, the sway amplitude 1.2mm, the welding speed 8.3mm/s, the welding beam current 1.5mA; formal weld: the accelerate voltage 150kv, the working muzzle distance 200-1200mm, sway wave shape triangle wave, the sway frequency 20Hz, the sway amplitude 1.2mm, the welding speed 8.3mm/s, the welding beam current 4.4mA.

A leaf seal for sealing a shaft rotating about an axis, in particular in a gas turbine, includes a multiplicity of spaced-apart leaves (26) which are arranged in a concentric circle around the axis and are fixed in their position by welded connections produced by electron beam welding, the leaves (26), with their surfaces, being oriented essentially parallel to the axis. The welded connections of the leaves are improved by the leaves (26) being designed in such a way and being arranged in the leaf seal in such a way that they abut against one another at the side edges directly or via intermediate spacers (27) along at least one contact line (36) extending over a plurality of leaves (26), and by the welded connections being designed as welds directed along the at least one contact line (36) and oriented in axial direction.

A titanium-aluminide turbine wheel (120, 220, 320, 420) is joined to the end of a shaft (110, 210, 310, 410) by utilizing a titanium surface on the end of the shaft to be joined to the wheel, and electron-beam welding the wheel onto the titanium surface on the shaft. A steel shaft (110, 310, 410) can have a titanium-containing end piece (130, 330, 430) mechanically joined (by brazing, bonding, or welding) to the end of the shaft, and the end piece can be directly electron-beam welded to the wheel. Alternatively, the shaft (210) can be formed as a titanium member and the end (212) of the shaft can be directly electron-beam welded to the wheel (220). In another embodiment, a ferrous end piece (330) is mechanically joined to the titanium-aluminide turbine wheel (320) and then the end piece is directly electron-beam welded to the end of a steel shaft (310). Alternatively, a silver-titanium alloy member (430) is sandwiched between the wheel (420) and a steel shaft (410) and is melted to join the parts together.

The invention belongs to the field of machining and particularly relates to an assembling precision control method of single-body blades in a blisk of an electron beam welding structure. The method disclosed by the invention comprises the following steps of: firstly, machining the single-body blades; designing convex technical circular platforms at blades tip parts of blade blanks; utilizing five coordinate milling centers to simultaneously mill welding surfaces and blade body modeled faces of the blades; dividing the single-body blades into seven groups to be clamped on a specific welding clamp, so as to finally control an assembling error to be within 0.05 mm; and after assembling, carrying out subsequent electron beam welding. According to the assembling precision control method disclosed by the invention, a reasonable blade forging blank structure design, integrated precise machining of blade references and welding surfaces, predication before welding of welding deformation of the blades, pre-compensation before welding, reasonable design of an assembling and welding clamp, and precise assembling of the blades on the clamp before welding, and the like are applied, so that the assembling precision of the blades before the welding is greatly improved, and the key technical difficulty that the gap between welding lines is ensured to be less than 0.1mm before electron beams are welded is broken through; and the after-welding precision of the blisk of the electron beam welding structure is controlled, an industrial blank is filled and the researching cost and the researching period are reduced at the same time.

A method for connecting individual lithium ion cells into a battery suited for powering an electric or hybrid vehicle is disclosed. The cell current collectors are electron beam welded to one another and to a connector tab in an substantially oxygen-free atmosphere. The cell current collectors and the connector tab are temporarily secured with a clamp, one portion of which has an opening. The electron beam size may be controlled, by magnetic coils and by the extent of electron scattering by the gas atmosphere, to minimally fill the clamp opening to minimize any irradiation of the clamp. The beam or the workpieces may be displaced, if required, fuse the entire opening area. A similar procedure may be followed to weld a plurality of connector tabs to a busbar.

The invention discloses a manufacturing process suitable for tungsten and steel connection of first wall part of a fusion reactor, belonging to the welding field of metal diffusion welding. The process comprises the following steps: 1, processing tungsten, steel and interlayer material workpieces according to requirements, and finishing a to-be-welded surface; 2, after processing, decontaminating and cleaning the workpieces by ultrasonic waves, and carrying out vacuum sealing; 3, manufacturing a stainless steel sheath; 4. putting the workpieces into the sheath in sequence, and sealing the sheath by electron beam welding or argon arc welding; 5, welding the sealed workpieces and sheath in a hot isostatic pressure machine, adopting high-purify argon gas by pressurizing gas, maintaining the temperature for 1.5-6h in the welding environment at 600-1080 DEG C and under the pressure of 100-300MPa, carrying out furnace cooling, and discharging from the furnace when the temperature is lower than 150 DEG C; and 6, carrying out necessary hot processing. According to the manufacturing process, the problem of poor connection performance of tungsten and steel caused by large difference of coefficients of thermal expansion can be solved, the connection strength and reliability of tungsten and steel can be improved.

The invention discloses a deposition forming manufacturing method of parts and molds, and belongs to the field of non-mold growing manufacturing and remanufacturing. The method comprises the following steps that S1, the three-dimensional CAD model of a workpiece to be formed is subjected to hierarchical slicing; S2, the CNC codes of all hierarchical slices are acquired; S3, deposition forming is conducted layer by layer according to the CNC codes of all the hierarchical slices, the fine portions of the workpiece are formed by laser, and one or more technologies in electric arc welding, electron beam welding, electroslag welding and submerged-arc welding is or are adopted to form the thick wall and the non-fine portions of the workpiece; or in the S3, a heat source which is compounded by laser beams and gas protection electric arcs or a heat source which is compounded by the laser beams and vacuum protection electronic beams is adopted for forming the thin wall and the fine portions of the workpiece, and the gas protection electric arcs or the vacuum protection electron beams are shut down. According to the deposition forming manufacturing method, direct deposition forming can be achieved to obtain parts and molds which are stable in structure property and high in manufacturing precision and are provided with thin walls or fine portions.

The invention relates to a vacuum electronic beam welding method, which comprises (1), welding preparation that cleaning target material and back plate, and moving it into vacuum room to vacuum; (2), preheating welding seam; (3), the first vacuum electronic beam welding; (4), vacuum insulating temperature of target material; (5), second vacuum electronic beam welding; (6), quenching that taking out the target material from the vacuum room, and quenching. Compared with present technique, the invention insulates temperature after the first welding, to accumulate the H atoms on the welding seam to form air holes, then execute the second welding to remove said air holes, and it quenches the target material to avoid dispersing left H atoms, to effectively control the hole rate of welding seam.

The invention relates to a material assembling method and rolling method for a titanium-steel clad plate and belongs to the field of titanium-steel clad plate manufacturing and processing. The material assembling method comprises the following steps: a, preparing two steel plates, two titanium plates and four side plates and removing an oxidation layer and oil stains on the surface of each plate; b, forming a hole in at least one side plate and welding a seamless carbon steel pipe at each opening hole; c, symmetrically assembling a blank from one steel plate, the two titanium plates and the other steel plate in sequence, and welding the blank into a combination body; d, after welding, connecting each seamless carbon steel pipe with a vacuum pump, vacuumizing to reach a pressure value no greater than 1*10<-2>Pa and sealing the seamless carbon steel pipe to obtain an assembled blank material. According to the material assembling method of the titanium-steel clad plate, the internal vacuum treatment of the blank material can be completed without the help of a vacuum electron beam welding box, and thus the production procedure is simplified, the cost is saved, the assembling effect is good and the problem of the interface oxidation of the titanium-steel clad plate can be effectively solved.

The invention discloses an ultrasonic auxiliary vacuum electron beam welding method applied to aluminum and an aluminum alloy, which can solve the technical problem that the aluminum, the aluminum alloy and especially cast aluminum alloy generate cavity type defects such as air hole, cold laps and the like in the process of welding a vacuum electron beam so as to improve mechanical properties of welding joints. In the technology, structural load ultrasonic energy with certain frequency and certain amplitude is applied in the process of welding the vacuum electron beam, the ultrasonic frequency is between 15 and 50 kHz, and the amplitude is between 10 and 50 mu m. A molten pool and adjacent areas thereof generated by welding the vacuum electron beam are continuously oscillated to a certain extent, so that the cavity type defects such as the air hole, the cold laps and the like can be effectively eliminated in the process of welding to obtain high quality welding joints.

The invention belongs to the field of iron and steel industry, and specifically relates to a 09MnNiDR ultra-thick low temperature container plate and a production method thereof. The 09MnNiDR ultra-thick low temperature container plate comprises the following components in percentage by mass: 0.08-0.12% of C, 0.20-0.45% of Si, 1.40-1.60% of Mn, less than or equal to 0.018% of P, less than or equal to 0.005% of S, 0.025-0.040% of Nb, 0.40-0.55% of Ni, 0.008-0.025% of Ti, 0.020-0.050% of Alt and the balance of Fe and inevitable impurities. A composite ultra-thick plate blank is prepared from a common medium-thickness continuous casting plate blank through a vacuum electron beam welding technology, so that the requirement that the standard compression ratio of a blank is not less than 3 is skillfully met; and the blank manufacturing mode is low in investment, pollution-free, low in energy consumption, flexible and convenient. Various properties of the prepared steel plate completely meet the requirements of GB3531-2014.

The invention discloses a vacuum electron beam welding method, which comprises the following steps of: providing a target blank material and a backboard used for supporting the target blank material; implementing welding preparation; pre-heating; and adopting the vacuum electron beam to implement vacuum welding to weld the target blank material on the backboard. The vacuum electron beam welding method also comprises the step of directly implementing surface modification after the vacuum welding. The vacuum electron beam welding method directly implements surface modification after the vacuum welding and does not need vacuum insulation or pump air to reduce the temperature, thus avoiding the subsequent step of vacuumizing, quickening the cycle period of the product and simultaneously reducing the porosity of the sputtering target blank material after being welded.

The electron beam welding method of the steam turbine clapboard refers to a kind of welding technique. The invention is realized in the following way: a. clean the surface of the clapboard; b. assemble and fix the clapboard on the frock in accordance with the requirement of mounting technology of the electron beam's clapboard; c. move the fixed clapboard to the electronic welding vacuum chamber to vacuumize it; d. when the vacuum degree reaches predetermined value, heat the clapboard for between 15min and 30min with electron beam stream; e. weld the clapboard with the electron bombardment welding machine; f. after finishing the welding, heat the clapboard for over 30min with electron beam stream; g. after postheat treatment, isolate the clapboard in the vacuum chamber for between 15min and 30min; h. move the welded clapboard out of the vacuum chamber and put it into the temper furnace for heat treatment. The invention is featured by short production cycle, high welding precision, simple technique and low cost.

The invention discloses a control method and power supply device for an electron-beam welding machine to accelerate high-voltage power supply, which uses three-phrase commercial power and adopts the current transformation mode of AC-DC-AC-DC; wherein, the inversion link DC-AC in the middle is medium-frequency inversion; the function of high frequency pulse width modulation and voltage regulation is realized in the inversion process; the transmission of the electrical energy, the transformation of the voltage value and high voltage insulation are realized by a medium frequency high voltage transformer; by using a high voltage sampling signal as an inverse feedback signal to control the duty cycle of the high frequency pulse width modulation output wave, the automatic stable regulation of the output high voltage is realized. Therefore, the device is characterized by little harmonic interference in the power network, quick system regulation, small output high voltage ripple, simple manufacturing and higher efficiency.

The invention relates to a production process of a hot-rolled composite blank. The production process comprises the following steps of: (1), cleaning base metal plates and clad metal plates, and cleaning the surface of a to-be-composited surface by use of a milling machine so that the surface is clean; (2), putting a high-temperature antisticking agent between the two clad metal plates, and putting the two superposed clad metal pates between the two base metal plates; (3), putting base plate metal strips at the parts, which are adjacent to the edges, of a gap between the two base metal plates, and performing spot welding on the base metal plates and the base plate metal strips so that the metal plates are fixed to form a blank; (4), sealing the peripheral edges of the blank by virtue of welding the blank via vacuum electron beam welding so as to form a dual-metal composite steel plate blank; and (5) heating the dual-metal composite steel plate blank in a heating furnace, discharging the blank out of the heating furnace, rolling the blank by virtue of a high-power medium and heavy plate mill, straightening after rolling, and trimming to obtain the hot-rolled composite blank. The production process is simple, good in combination quality, high in efficiency, relatively low in production cost, short in period, easy for production organization and low in loss.