30results about "Cold pressure" patented technology

The invention provides a leak-proof fastening device and an assembly method thereof. The leak-proof fastening device comprises an annular base (15) and a washer (11) of a substantially cylindrical skirt (13) at the outer periphery of the annular base. The annular base comprising a central orifice (18) coaxial with the axis (14) of the skirt, characterized in that the annular base is at least partially covered with a layer (21) of a viscous composition capable of forming a liquid-tight coating through polymerization. When installing a nut having such a washer onto a male fastener such as a pin (33), the spreading of the viscous layer makes it possible to fill in the gaps (36) of the assembly, the polymerization of the composition ensuring its leak-tightness afterwards.

A method for fabrication or production of composite structures, which has particular advantages when fabricating large structures, includes the steps of procuring a composite panel, such as carbon-fiber-reinforced resin. The edge of the composite panel is adhesively fixed in the slot of a bifurcated metallic piece. After the composite panel is adhesively fixed to the metallic piece, the metallic piece is stir-friction welded to another metal piece. The stir-friction welding occurs at a lower temperature than fusion welding, and so the adhesive bond between the metallic element and the composite panel is less affected. When two composite panels are each adhesively fastened to a metallic element, the two metallic elements can, in turn, be stir-friction welded. Thus, large panels can be fabricated.

The invention discloses a pressure sensor patch pressurization device. The device comprises a base, two vertical plates are symmetrically arranged on the top wall of the base, the top ends of the twovertical plates are jointly provided with a transverse plate, a motor is arranged on the top wall of the transverse plate, a bevel gear is arranged at the driving end of the motor, the side wall of the bevel gear is meshed with a bevel gear rod, the bevel gear rod penetrates through the top wall of the transverse plate and extends to the lower side of the transverse plate, a trapezoid block is arranged at the bottom end of the bevel gear rod, a rotary groove is formed in the top of the trapezoid block, the bottom end of the bevel gear rod penetrates through the top wall of the trapezoid blockand extends into the interior of the rotary groove. According to the device, the structure is simple, the operation is convenient, by accurately controlling the pressure applied to a sensor patch, thesituation that zero-position output is inconsistent after the sensor patch is installed can be avoided, so that the sensor does not need to be corrected, and the cost output is saved.

The invention belongs to the technical field of application welding, and particularly discloses a method for improving the corrosion resistance of a welding joint between an aluminum plate and a steelplate. The method comprises the following steps that a layer of cobalt is plated on the to-be-welded surface of the steel plate for standby application; then the steel plate is used as a base plate,the aluminum plate is a compound plate, the aluminum plate and the steel plate are assembled on a welding clamp tool, and a certain lap joint length and a lap joint gap are kept between the aluminum plate and the steel plate; the plane formed through the lap joint between the aluminum plate and the steel plate is a to-be-welded surface; a coil is arranged below the aluminum plate, and a pressing plate is arranged above the steel plate; and finally, the aluminum plate and the steel plate are welded by using the electromagnetic pulse. According to the method, the corrosion resistance, the wear resistance and the high temperature resistance of the welding joint can be improved, the generation of aluminum and steel intermetallic compounds and mother material fragments can be effectively prevented, and the performance of the welding joint between the aluminum plate and the steel plate is improved.

The invention discloses a cold welding process repairing method for an oil field storage tank, without hot work, which comprises the steps that according to different construction conditions, surfacetreatment is conducted on the periphery of a leakage point of an oil field storage tank, and surface paint, rust, greasy dirt and a corroded loose layer on the periphery of the leakage point are completely removed; cold welding repair glue is prepared; gluing is conducted: the prepared cold welding repair glue is uniformly coated on the damaged leakage point part of the oil field storage tank, thedamaged part is firstly filled and leveled up, and then coated; bonding and curing are conducted; and after an expected leaking stoppage purpose is achieved through inspection, redundant viscose is ground, and the appearance of the bonding portion is kept attractive and smooth. The cold welding process repairing method for an oil field storage tank, without hot work, provided by the invention islow in repairing cost and short in repairing period, a special cold welding repairing glue bonding technology is adopted, good mechanical capacity and compressive strength can be provided, and for oilfield storage tank pipe wall damage repairing, the high grabbing force and adhesive force are achieved, and it is guaranteed that the repairing and reinforcing effect is effective for a long time.

The present invention provides a method for manufacturing a metal joint that promotes adhesion between metallic joint surfaces to improve joint strength. Pulse lasers are illuminated to at least surface portions, where riveting is to be implemented, of surfaces of metal plates (1), so that the surface portions are molten and solidified to form surface modification thin films (4); and multiple metal plates (1) are stacked to form a laminated metal plate (5) by facing the surface modification thin films (4) to each other, and pressurized shaping is performed on the laminated metal plate (5) by using a punch (7) and a die (6) to implement riveting.

Jointed metal plates and the manufacturing method thereof are provided, in which a first plate can be end-to-end connected to a second plate. The first plate has protrusions on its jointing edge, while the second plate has recesses on its jointing edge. The protrusions of the first plate are embedded in the recesses of the second plate respectively in a manner that the first plate is fixed with respect to the second plate. Thereby, welding process can be omitted when two metal plates are to be fixed end-to-end. The disadvantages of the welding process can be prevented. The manufacturing efficiency can be increased, while the manufacturing cost can be reduced.

The invention relates to a joining method (80) for the positionally fixed connection of a first component (10) to a second component (20) under pressure loading, the first component (10) being arranged between a punch (40) and the second component (20), the ambient pressure (p-chamber) of the first component (10) and the ambient pressure (pi) of the second component (20) are synchronously increased to the working pressure, the working pressure is maintained for a defined duration or the ambient pressure (p-chamber) of the first component is continuously reduced after the working pressure is reached, thus generating a pressure difference. Further, a system (100) is disclosed.

A system for fastening, by welding, a component having a portion with a conical surface profile to a motor vehicle fuel tank that includes an opening whose perimeter has a conical surface profile. The welding is carried out between at least one portion of the conical surface of the perimeter of the opening in the tank and at least one portion of the conical surface of the component.

The invention discloses a method for connecting and sealing gold and silver materials, which comprises the following steps: under normal temperature conditions, a ductile metal (3) is mechanically embedded in the gap between the two materials of gold (1) and silver (2), Use the hoarding board to enclose the joint surface formed by the three materials of gold (1), ductile metal (3) and silver (2) into a space area, and pour high-performance silicone structural adhesive on the substrate in the space area . The invention has good connection and sealing effect, and the whole production is carried out under the normal temperature condition, the production process is simple, the operation environment is improved, the labor intensity is reduced, and the production cost is reduced.

The invention discloses a connection and sealing method for a steel material and a magnesium material. The method comprises the following steps that ductile metal (3) is embedded into a gap between the steel material (1) and the magnesium material (2) in a mechanical manner at the normal temperature; a spatial area is defined by joint faces formed by the steel material (1), the ductile metal (3) and the magnesium material (2) through encircling plates; and high-performance silicone structural adhesive is poured on a substrate inside the spatial area. By means of the method, the good connection and sealing effect is achieved; in addition, the whole production process is conducted under the normal-temperature condition; the production technology is simple; the operation environment is improved; labor intensity is lowered; and production cost is lowered.

The invention discloses a polarizer push fixture and a work mode thereof. The polarizer push fixture comprises a rack, a metal plate positioning tray mechanism mounted at the upper end of the rack, a pressing-down mechanism located above the metal plate positioning tray mechanism, and a PLC (Programmable Logic Controller) in signal connection with the pressing-down mechanism. The work mode comprises the following steps: 1, placing a metal plate in a metal plate tray; 2, placing the metal plate positioning tray mechanism at the upper end of the rack; 3, opening a drive switch and controlling the pressing-down mechanism to descend and compress a polarizer and the metal plate by the PLC; 4, enabling the pressing-down mechanism to ascend automatically after the pressing-down mechanism performs pressing down for 12 seconds; 5, taking the metal plate positioning tray mechanism out from the polarizer push fixture; 6, taking the metal plate out from the metal plate tray. By adopting the polarizer push fixture and the work mode, a press-attaching rubber head of the pressing-down mechanism is in contact with the polarizer, so that the polarizer and the metal plate are fitted closely and adhered firmly, and the firm adhesion of the polarizer on the metal plate is ensured, and the whole operation is convenient and effective.

The present disclosure concerns a method for embossing a component, and a method for connecting a component to a second component. The invention also relates to a device having such a component. The invention is based on the overall concept that at least one support groove is inserted and / or introduced into the peripheral region of a functional groove in order to reduce the flow of the material part of the component transversely to the imprint pressure application direction.

The invention discloses a magnesium and aluminum material connecting sealing method. The method comprises the following steps that under the normal temperature condition, ductile metal (3) is embedded into a clearance part of a magnesium material (1) and an aluminum material (2) in a mechanical mode, a spatial region is formed by enclosing joint faces of the magnesium material (1), the ductile metal (3) and the aluminum material (2) through an enclosing plate, and a high-performance silicone structural adhesive is poured on a substrate in the spatial region. According to the magnesium and aluminum material connecting sealing method, a good connecting sealing effect is achieved, the whole production is conducted under the normal temperature condition, the production technology is simple, the operating environment is improved, the labor intensity is reduced, and the production cost is reduced.

The invention discloses nail-plier integrated type quick cold pressing pliers. The nail-plier integrated type quick cold pressing pliers comprise a device shell, a threaded cover plate is arranged at the top of the device shell, an upper partition plate is embedded in the device shell, a lower partition plate and a power supply assembly are arranged at the bottom of the upper partition plate, an electric control mechanism is arranged at the bottom of the power supply assembly, a sensing device is embedded in a conical push rod, a pressing plier groove is formed in the center of the bottom of the device shell in a penetrating mode, a first control switch is arranged at the top of the threaded cover plate, a second control switch is arranged on one side of the first control switch, a safety lock mechanism is arranged on the side, close to the second control switch, of the first control switch, the outer surface of the device shell is provided with a placing groove in a penetrating mode, a sealing cover is hinged to one side of the placing groove, a locking and unlocking mechanism is arranged on one side of the sealing cover, and a control panel is fixedly connected in the placing groove. According to the nail-plier integrated type quick cold pressing pliers, by means of the arrangement of the safety lock mechanism, an operator can be prevented from accidentally touching the control switches.

The invention discloses a method for locating and fixing a motor bracket and a shaft, comprising step 1: passing bolts through the casing of the motor bracket and a motor mounting plate; step 2: passing the components obtained in step 1 through threaded holes on the motor; 3: Tighten the nuts to get a simple motor bracket; Step 4: Install the coupling to the shaft of the motor; Step 5: Install the other end of the coupling to the shaft; Step 6, Weld the motor mounting plate. The motor bracket and the rotating shaft bracket are welded together by first positioning and then welding and fixing. In this way, the motor support can be produced according to the specifications of the motor, and the rotating shaft support can also be produced according to the required specifications, which is convenient for mass production of production parts, can reduce costs, and improve production efficiency.

The invention relates to a welding method of a tantalum target material assembly. The welding method comprises the following steps: carrying out sand blasting treatment on a welding surface of a tantalum target material, and then carrying out tin film plating treatment on the welding surface of the tantalum target material; carrying out copper film plating treatment on a welding surface of a back plate, then carrying out heating treatment on the tantalum target material plated with the tin film and the back plate plated with the copper film, then arranging mixed metal powder on the welding surface of the tantalum target material and the welding surface of the back plate correspondingly, and then carrying out infiltration treatment; and arranging copper wires on the back plate subjected to infiltration treatment, then assembling the welding surface of the back plate provided with the copper wires and the welding surface of the tantalum target material, and carrying out pressurizing and cooling, so that the tantalum target material assembly is obtained. Welding is carried out by adopting a film plating process and combining with specific mixed metal powder, then the welding bonding strength of the tantalum target material assembly is improved, meanwhile, the service life of the welded target material is prolonged by 20-30%, and when the welded target material assembly is sputtered, the thickness of a plated film obtained in the sputtering process is uniform.

The invention discloses a numerical control hydraulic automatic cold welding machine. The numerical control hydraulic automatic cold welding machine comprises an upper main body and a base, wherein the base is located on the outer surface of the upper end of the main body and is fixedly connected with the main body, rectangular grooves are formed in the two sides of the outer surface of the upperend of the main body, the inner surfaces of the lower ends of the rectangular grooves are fixedly connected with hydraulic machines, the outer surfaces of the upper ends of the hydraulic machines arefixedly connected with limiting devices, baffles are fixedly installed at the edges of the front end and the rear end of the outer surface of the upper end of the main body, the outer surface of the upper end of the base is movably connected with a protective plate, a storage device is connected above the protective plate in a sliding mode, and grooves are formed in the joints of the outer surfaces of the two sides of the base and the limiting devices. According to the numerical control hydraulic automatic cold welding machine, a worker can quickly insert a welding part into a cold pressing mold, so that the problems that when the welding part is inserted, the welding part collides with the cold pressing mold, so that an inserting hole in the cold pressing mold is damaged and deformed, thewelding part is inconvenient to insert later, time is wasted, and the working efficiency is reduced are solved.

The invention discloses a buffer type cold welding mechanism for preventing product crushing. The mechanism comprises a frame, a driving device and a cold welding device; the frame is provided with amachining base; the driving device is arranged on the frame; the cold welding device is arranged on the frame in a up-down reciprocating moving mode, and is opposite to the machining base; an abuttingpiece is connected between the cold welding device and the driving device; the driving device drives the abutting piece to press down; the abutting piece drives the cold welding device to press down;and an elastic buffer piece for preventing crushing or damage of a product is arranged in the connected place of the cold welding device and the abutting piece. The elastic buffer piece is arranged in the connected place of the cold welding device and the abutting piece; and through arrangement of the elastic buffer piece, the downward pressing acting force of the abutting piece is acted on the elastic buffer piece and the cold welding device in succession, and is effectively buffered when passing through the elastic buffer piece, so that the downward pressing acting force of the abutting piece is directly acted on the cold welding device to effectively prevent damage of the product due to higher downward pressing acting force of the cold welding device.

The invention belongs to the field of applied welding technology, and specifically discloses a method for improving the corrosion resistance of welded joints between aluminum plates and steel plates. A layer of cobalt is coated on the surface of the steel plates to be welded for use; Assemble the aluminum plate and steel plate on the fixture tool, and keep a certain lap length and lap gap between the aluminum plate and the steel plate; the plane formed by the lap joint of the aluminum plate and the steel plate is the surface to be welded; there is a coil under the aluminum plate, and a coil above the steel plate. Press plates; finally aluminum and steel plates welded using electromagnetic pulses. The method can not only improve the corrosion resistance, wear resistance and high temperature resistance of the welded joint, but also effectively prevent the generation of aluminum-steel intermetallic compounds and base metal fragments, and improve the performance of the welded joint of the aluminum plate and the steel plate.

The invention provides a quick upper die changing structure and related equipment and method. The structure comprises a telescopic mechanism and a locking mechanism, wherein the telescopic mechanism is connected to a lifting mechanism and comprises a telescopic end capable of stretching out and drawing back in the horizontal direction; the locking mechanism is connected to an upper die and comprises a force applying part and a first surface; and when the telescopic end is inserted between the force applying part and the first surface, the force applying part can provide vertically downward force to enable the lower surface of the telescopic end of the telescopic mechanism to be attached to the first surface. Through the vertically downward force provided by the force applying part, the lower surface of the telescopic end of the telescopic mechanism is attached to the first surface of the locking mechanism, thus the upper die is attached to a lower die easily, and the requirement for the structural precision is lowered. Meanwhile, quick changing of the upper die can be achieved, and the machining requirements of different products are met.

The invention provides a connecting structure of a side plate and an accessory and relates to the technical field related to heat dissipaters. The connecting structure comprises the side plate and theaccessory, wherein a slot is formed in the side plate, and one end of the accessory is arranged in the slot; and a soldering lug is arranged between the accessory and the side plate. According to theconnecting structure of the side plate and the accessory provided by the invention, one or more point connecting side plates and the accessories are riveted to the upper and lower surfaces of a C-shaped side plate, so that the cost of a material is not increased basically. As the connecting mode is implemented by means of deformation, the chemical components of the material are not changed, so that the corrosion resistance of a product is not affected. The product is good in riveting consistence and attractive in appearance; the surfaces of the side plate and the accessory entering a furnaceto be brazed are tightly welded together by means of brazing filler metal, so that the stress areas of the accessory and the side plate of the product in the vibrating process are increased, and the vibration resistance is guaranteed.