51results about How to "Long welding time" patented technology

The invention discloses a tin solder plaster of leadless alloy and making method, which consists of soldering flux and leadless tin solder alloy powder, wherein the soldering flux is composed of organic solute and organic solvent; the organic solute contains macromolecular PVP, macromolecular PEG and or PVA, abietic acid or modified abietyl, aliphatic acid monoglyceride and aliphatic acid sorbate; the organic solvent is one or more composition of anhydrous alcohol, ethandiol, cycloethane, glycol ethylene and diglycol ethylene.

The invention provides a high-temperature brazing filler metal preparing method based on foamed silver filled with metal tin. High-temperature brazing filler metal is a metal sheet formed by the foamed silver with micro and nanoscale pores filled with the metal tin, the foamed silver is filled with liquid metal tin through the capillary action, and preparing of the brazing filler metal is achieved. When the brazing filler metal is used for welding, a finally-formed welding line is composed of an intermetallic compound and remaining foamed silver, low-temperature welding can be achieved, an obtained welding point can be subject to high-temperature service, welding point reliability and welding line stability are greatly improved, and the method can be widely applied to various high-temperature welding fields.

The invention relates to a vacuum glass laminated at high temperature, which comprises an upper glass and a lower glass, the upper glass and the lower glass are plane glass or convex glass, the upper glass and the lower glass are rapidly heated and laminated at high temperature, the circumference can be welded together by pressurizing through a glass solder or a metal solder in a vacuum furnace, an enclosing vacuum layer is formed between the upper glass and the lower glass, and the supporters with lattice arrangement are arranged in the vacuum layer. The vacuum glass and its production method have the advantages that the process is simple and the production efficiency is high, the prepared vacuum glass can eliminate the stress of the sealed edge and can keep the toughening characteristic of the toughened glass, so that toughened vacuum glass can be massively produced, and usage life is increased.

The invention relates to the electric melting pipe fitting welding quality evaluation technology, and aims at providing a melting zone control method based on electric melting connector real-time temperature field data. The melting zone control method comprises the steps that welding parameters are utilized for constructing a temperature field calculation model of an electric melting connector; welding process control parameters of the electric melting connector are input into an electric melting welding machine, after welding is started, voltage and current data output by the electric meltingwelding machine in real time are measured and input into the temperature field calculation model, and coordinate data and temperature data of any time and any point in the electric melting connectortemperature field are output in real time; coordinate data of all position points in the melting zone are extracted, and the maximum melting zone depth lmax is calculated; and in the welding process,according to the preset melting zone control section and the real-time changing maximum melting zone depth lmax data, the welding process control parameters are adjusted, and control over the electricmelting connector melting zone coverage area is achieved. By means of the melting zone control method, data support can be provided for accident reason analysis, the melting zone control method is suitable for various electric melting connectors produced by different welding machines and pipe fitting manufacturers, and judgment and welding quality grasping are facilitated.

Metal-welded plain vacuum glass provided with edges sealed by sealing strips is disclosed. The plain vacuum glass comprises upper glass and lower glass, and is characterized in that: the upper glass is provided with at least one sealing strip; the periphery of the lower glass is provided with at least two sealing strips; the sealing strip of the upper glass is inserted between the sealing strips of the lower glass; and after being rapidly heated, the upper glass and the lower glass are subjected to sheet combining at a high temperature, and the peripheries of the upper glass and the lower glass are welded under elevated pressure by metal solder in a vacuum furnace. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured tempered vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. The tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

The invention discloses a resistance spot welding method for a coated steel plate, and is applied to welding of a resistance spot welding device on a welding plate group. The method comprises the following steps that first-section welding is conducted on the welding plate group by adopting a first current to form a welding nugget with an initial diameter on the welding plate group, the first current being smaller than a maximum welding current; and after first interval time, a second current is adopted for conducting second-section welding with a duration being preset time on the welding plate group, so that a diameter of the welding nugget is increased to a target diameter, the target diameter being smaller than a maximum nugget diameter, the preset time being welding time required when welding is conducted by using the maximum welding current so as to enable the formed nugget to reach the target diameter, and the second current being smaller than the maximum welding current. According to the method, a welding process has a lower welding temperature and shorter high-temperature retention time, and the technical problems that in the prior art, the service life of an electrode is short, and LME cracks exist on the surface of a welding spot of the coated steel plate are solved.

The invention relates to a method for blanking a two-sided oblique head structural steel, comprising the following steps: 1) manufacturing a structural steel base according to the rotating angle x of the structural steel; and 2) fixing the structural steel on the structural steel base to be tightly clamped; adjusting the cutting angle of a saw blade to be Phi, and cutting to obtain an accurate space angle oblique head. The rotating angle x of the structural steel is that x is equal to tan-1(tanb / tana), wherein, a is the included angle of the vertical plane of the structural steel inclined plane, b is the horizontal included angle of the structural steel inclined plane, and a and b are the known quantity in actual processing; the cutting angle Phi of the saw blade is that the Phi is equal to tan-1(tanb*cosx), wherein, b is the horizontal plane included angle of the structural steel inclined plane, and X is the rotating angle of the structural steel. By adopting the above technical scheme, the method of the invention can acquire the blanking of the accurate space angle of the structural steel (two-sided oblique head), thus solving the blanking difficulty in the vehicle frame production.

A gas generator housing part is produced of a thin-walled tube having a wall thickness which amounts to a maximum of 10% of a tube external diameter and a minimum tensile strength which amounts to at least approximately 800 N / mm2, and a connecting piece having an external diameter which amounts to between 15% and 40% of the tube external diameter. After aligning the connecting piece radially to the tube such that an end face of the connecting piece faces an outer face of the tube, the tube and the connecting piece are joined by friction welding. A maximum welding time amounts to less than 1 second, preferably less than 0.3 second and a friction depth amounts to less than 80% of the wall thickness of the tube.

High-temperature-sheet-combination sealed convex vacuum glass with edges sealed by sealing grooves and sealing strips is disclosed. The convex vacuum glass comprises upper glass and lower glass which are convex glass. The upper glass is provided with one to four air extracting holes. The peripheries of the upper glass and each air extracting hole are provided with sealing strips. Corresponding positions of the periphery of the lower glass and each air extracting hole are provided with the sealing grooves and sealing strips. After being heated, the upper glass and the lower glass are subjected to sheet combination at a high temperature, and the peripheries of the upper glass and the lower glass are welded under elevated pressure by glass solder in a heating furnace. Each air extracting hole is automatically sealed by utilization of metal solder in a vacuum furnace. A sealed vacuum layer is formed between the upper glass and the lower glass. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. Tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

Metal-welded plain vacuum glass provided with edges sealed by sealing grooves and sealing strips is disclosed. The plain vacuum glass comprises upper glass and lower glass, and is characterized in that: the periphery of the upper glass is provided with sealing strips; corresponding positions of the periphery of the lower glass are provided with the sealing grooves and sealing strips; after being rapidly heated, the upper glass and the lower glass are subjected to sheet combining at a high temperature, and the peripheries of the upper glass and the lower glass are welded under elevated pressure by metal solder in a vacuum furnace; a sealed vacuum layer is formed between the upper glass and the lower glass; and supports arranged in a point array are disposed in the vacuum layer. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured tempered vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. The tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

Metal-welded plain vacuum glass provided with edges sealed by sealing strips and sealing grooves and provided with mounting hole(s) is disclosed. The plain vacuum glass comprises upper glass and lower glass, and is characterized in that: each mounting hole and a corresponding air extracting hole are of an integrated structure; the number of the mounting hole(s) is 1-4; peripheries of the upper glass and each air extracting hole are provided with sealing strips; corresponding positions of the periphery of the lower glass and each air extracting hole are provided with the sealing grooves and sealing strips; after being rapidly heated, the upper glass and the lower glass are subjected to sheet combining at a high temperature, and peripheries of the upper glass and the lower glass are welded under elevated pressure by alloy solder in an atmosphere heating furnace; each air extracting hole is sealed by utilization of metal solder in a vacuum furnace; a sealed vacuum layer is formed between the upper glass and the lower glass; and supports arranged in a point array are disposed in the vacuum layer. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured tempered vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. The tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

The invention relates to a glass-welded sealed convex vacuum glass with edges and extraction openings sealed by sealing strips, which comprises an upper glass and a lower glass, 1-4 extraction openings are arranged on the upper glass, at least a sealing strip is provided at circumference of the upper glass and the extraction opening, at least two sealing strips are respectively provided at circumference of the lower glass and the extraction opening, the sealing strip of the upper glass is inserted between the sealing strips of the lower glass, the upper glass and the lower glass are rapidly heated and laminated at high temperature, the circumference can be welded together by pressurizing through a glass solder in a heating furnace, and the extraction opening is performed with on-line enclosing by using molten glass in a continuous vacuum furnace. The vacuum glass and its production method have the advantages that the process is simple and the production efficiency is high, the prepared vacuum glass can eliminate the stress of the sealed edge and can keep the toughening characteristic of the toughened glass, so that toughened vacuum glass can be massively produced, and its usage life is increased.

Glass-welded plain vacuum glass with edges sealed by sealing grooves is disclosed. The plain vacuum glass comprises upper glass and lower glass, and is characterized in that: the upper glass is provided with sealing strips; the periphery of the lower glass is provided with the sealing grooves; after being rapidly heated, the upper glass and the lower glass are subjected to sheet combining at a high temperature, and the peripheries of the upper glass and the lower glass are welded under elevated pressure by glass solder in a vacuum furnace; a sealed vacuum layer is formed between the upper glass and the lower glass; and supports arranged in a point array are disposed in the vacuum layer. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. Tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

Metal-welded plain double-vacuum-layer glass provided with edges sealed by sealing strips and sealing grooves and provided with mounting hole(s) is disclosed. The plain double-vacuum-layer glass comprises upper glass, lower glass and middle glass, and is characterized in that: each mounting hole and a corresponding air extracting hole are of an integrated structure; the lower surface of the upper glass, the lower surface of the middle glass and the periphery of each air extracting hole are provided with sealing strips; corresponding positions of the peripheries of the upper surfaces of the middle glass and the lower glass and each air extracting hole are provided with the sealing grooves and sealing strips; after the three sheets of glass are rapidly heated, peripheries of the three sheets of glass are welded under elevated pressure by alloy solder in an atmosphere heating furnace; each air extracting hole is sealed by utilization of metal solder in a vacuum furnace; two sealed vacuum layers are formed among the three sheets of glass; and supports arranged in a point array are disposed in the vacuum layers. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured tempered vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. The tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

The invention discloses a multi-shaft welding machining center and belongs to the field of welding. A multi-direction moving device is arranged on a rack of the welding machining center, wherein a plurality of welding devices are hung below the multi-direction moving device in a sliding manner, and each welding device comprises a linear moving mechanism and one or more welding mechanisms; each welding mechanism comprises a plurality of joints, the joints are connected through connecting arms, and the plurality of joints at least comprise a welding reversing joint and a welding gun reversing joint; a welding gun is arranged below the welding gun reversing joint; two workpiece turnover platforms are arranged on the lower-layer rack below the welding mechanisms and are a welding station and a preset station separately; and each welding gun performs welding according to a corresponding welding program configured in a controller according to a welding track. According to the welding machining center, different workpieces or different welding paths can be welded at the same time, so that the labor intensity of workers is reduced, the welding speed is increased, and the welding quality is guaranteed.

The invention belongs to the field of motorcycle part production, and particularly relates to a motorcycle rear fork welding rotating table. The motorcycle rear fork welding rotating table comprises afirst supporting body and a second supporting body, a U-shaped supporting frame is arranged between the first supporting body and the second supporting body, an opening of the U-shaped supporting frame is formed upwards, one side of the U-shaped supporting frame is connected with the first supporting body, and the other side of the U-shaped supporting frame is connected with the second supportingbody; and a rear fork fixing tool is arranged on the U-shaped supporting frame, the rear fork fixing tool is connected with the U-shaped supporting frame, and an air guide structure is arranged on the bottom face of the U-shaped supporting frame and corresponds to the welding position of a rear fork. According to the motorcycle rear fork welding rotating table, welding flux can be more sufficiently diffused at the positions of the two sides of the rear fork before solidification, and protruding blocks are not prone to being formed at the welding flux combination position.

Glass-welded plain vacuum glass provided with edges sealed by sealing grooves and provided with mounting hole(s) is disclosed. The plain vacuum glass comprises upper glass and lower glass. The plain vacuum glass is characterized in that: each mounting hole and a corresponding air extracting hole are of an integrated structure; the number of the mounting hole(s) is 1-4; the peripheries of the upper glass and each air extracting hole are provided with sealing strips; corresponding positions of the periphery of the lower glass and each air extracting hole are provided with the sealing grooves; after being rapidly heated, the upper glass and the lower glass are subjected to sheet combining at a high temperature, and the peripheries of the upper glass and the middle glass are welded under elevated pressure by glass solder in a heating furnace; each air extracting hole is sealed on line by utilization of melted glass in a continuous vacuum furnace; one sealed vacuum layer is formed between the upper glass and the lower glass; and supports arranged in a point array are disposed in the vacuum layer. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. Tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

The invention relates to a metal-welded plain vacuum glass with installing holes and edge sealed by sealing strips, which comprises an upper glass and a lower glass, the installing holes and extraction openings are combined as an integral body, 1-4 installing holes are arranged, at least a sealing strip is provided at circumference of the upper glass and the extraction opening, at least two sealing strips are provided at circumference of the lower glass and the extraction opening, the sealing strip of the upper glass is inserted between the sealing strips of the lower glass; the upper glass and the lower glass are rapidly heated and laminated at high temperature, the circumference can be welded together by pressurizing through an alloy solder in an atmosphere heating furnace, and the extraction opening is enclosed by using metal solder in vacuum furnace. The vacuum glass and its production method have the advantages that the process is simple and the production efficiency is high, the prepared vacuum glass can eliminate the stress of the sealed edge and can keep the toughening characteristic of the toughened glass, so that toughened vacuum glass can be massively produced, and its usage life is increased.

Metal-welded sealed plain double-vacuum-layer glass with edges sealed by sealing grooves is disclosed. The plain double-vacuum-layer glass comprises upper glass, lower glass and middle glass. The upper glass and the middle glass are provided with one to four air extracting holes. The lower surface of the upper glass, the lower surface of the middle glass and the periphery of each air extracting hole are provided with sealing strips. Corresponding positions of the peripheries of the upper surfaces of the middle glass and the lower glass and each air extracting hole are provided with the sealing grooves. After being heated, the upper glass and the middle glass as well as the lower glass and the middle glass are subjected to sheet combination at a high temperature, and the peripheries of the upper glass, the middle glass and the lower glass are welded under elevated pressure by alloy solder in an atmosphere heating furnace. Each air extracting hole is sealed by utilization of metal solder in a vacuum furnace. Two sealed vacuum layers are formed among the upper glass, the middle glass and the lower glass. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. Tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

Metal-welded sealed plain double-vacuum-layer glass with edges sealed by sealing strips is disclosed. The plain double-vacuum-layer glass comprises upper glass, lower glass and middle glass which are plain glass. The upper glass and the middle glass are provided with one to four air extracting holes. The periphery of the lower surface of the upper glass, the periphery of the lower surface of the middle glass and the periphery of each air extracting hole are respectively provided with at least one sealing strip. The peripheries of the upper surfaces of the middle glass and the lower glass are provided with at least two sealing strips. A position on the lower glass, which is corresponding to each air extracting hole, is provided with at least one sealing strip. Peripheries of the three sheets of glass are welded under elevated pressure by alloy solder in an atmosphere heating furnace. Each air extracting hole is sealed by utilization of metal solder in a vacuum furnace. A manufacturing method of the plain double-vacuum-layer glass is simple in process and high in production efficiency. The manufactured vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. Tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

Glass-welded plain double-vacuum-layer glass provided with edges sealed by sealing grooves is disclosed. The plain double-vacuum-layer glass comprises upper glass, lower glass and middle glass, and is characterized in that: the lower surfaces of the upper glass and the middle glass are provided with sealing strips; the peripheries of the upper surfaces of the middle glass and the lower glass are provided with the sealing grooves; after being rapidly heated, the upper glass and the middle glass as well as the lower glass and the middle glass are subjected to sheet combining at a high temperature, and the peripheries of the upper glass, the middle glass and the lower glass are welded under elevated pressure by glass solder in a vacuum furnace; and two sealed vacuum layers are formed among the upper glass, the middle glass and the lower glass. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured tempered vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. The tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

The invention provides a spiral welding rod and a clamping welding gun for the spiral welding rod. The spiral welding rod is in a spiral shape. The clamping welding gun comprises a column casing, a vibration pump, a reinforcing base and a handle. The inner wall of the column casing is provided with a thread which is in threaded fit with the spiral welding rod. The vibration pump is connected with the outer wall of the column casing. The lower end of the column casing is connected with an end socket. The end socket is provided with a hole. The spiral welding rod penetrates through the hole. The spiral welding rod has the beneficial effects that the welding time of the single welding rod can be prolonged, the welding gun adapting to the welding rod is developed, the unique welding rod and the unique welding gun are cooperated for use, and the welding efficiency is further improved.

High-temperature-sheet-combination sealed plain double-vacuum-layer glass with edges sealed by sealing grooves is disclosed. The plain double-vacuum-layer glass comprises upper glass, lower glass and middle glass. The upper glass and the middle glass are provided with one to four air extracting holes. The lower surface of the upper glass, the lower surface of the middle glass and the periphery of each air extracting hole are provided with sealing strips. Corresponding positions of the peripheries of the upper surfaces of the middle glass and the lower glass and each air extracting hole are provided with the sealing grooves. After being heated, the upper glass and the middle glass as well as the lower glass and the middle glass are subjected to sheet combination at a high temperature, and the peripheries of the upper glass, the middle glass and the lower glass are welded under elevated pressure by glass solder in a heating furnace. Each air extracting hole is automatically sealed by utilization of metal solder in a vacuum furnace. Two sealed vacuum layers are formed among the upper glass, the middle glass and the lower glass. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. Tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

The invention relates to a plain vacuum glass with installing holes at sealed edge of a sealing strip, which comprises an upper glass and a lower glass, the installing holes and extraction openings are combined as an integral body, 1-4 installing holes are arranged, at least a sealing strip is provided at circumference of the upper glass and the extraction opening, at least two sealing strips are provided at circumference of the lower glass and the extraction opening, the sealing strip of the upper glass is inserted between the sealing strips of the lower glass; the upper glass and the lower glass are rapidly heated and laminated at high temperature, the circumference can be welded together by pressurizing through a glass solder in a heating furnace, and the extraction opening is performed with on-line enclosing by using molten glass in a continuous vacuum furnace. The vacuum glass and its production method have the advantages that the process is simple and the production efficiency is high, the prepared vacuum glass can eliminate the stress of the sealed edge and can keep the toughening characteristic of the toughened glass, so that toughened vacuum glass can be massively produced, and its usage life is increased.

Glass-welded plain vacuum glass with edges sealed by sealing grooves and sealing strips is disclosed. The plain vacuum glass comprises upper glass and lower glass, and is characterized in that: the upper glass is provided with sealing strips; the periphery of the lower glass is provided with the sealing grooves and sealing strips; after being rapidly heated, the upper glass and the lower glass are subjected to sheet combining at a high temperature, and the peripheries of the upper glass and the lower glass are welded under elevated pressure by glass solder in a vacuum furnace; a sealed vacuum layer is formed between the upper glass and the lower glass; and supports arranged in a point array are disposed in the vacuum layer. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. Tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.

Glass-welded sealed convex vacuum glass with edges sealed by sealing grooves is disclosed. The convex vacuum glass comprises upper glass and lower glass which are convex glass. The upper glass is provided with one to four air extracting hole. The peripheries of the upper glass and each air extracting hole are provided with sealing strips. Corresponding positions of the peripheries of the lower glass and each air extracting hole are provided with the sealing grooves. After being rapidly heated, the upper glass and the lower glass are subjected to sheet combining at a high temperature, and the peripheries of the upper glass and the lower glass are welded under elevated pressure by glass solder in a heating furnace. Each air extracting hole is sealed on line by utilization of melted glass in a continuous vacuum furnace. A sealed vacuum layer is formed between the upper glass and the lower glass. The vacuum glass and a manufacturing method thereof are simple in process and high in production efficiency. The manufactured vacuum glass eliminates edge sealing stress and maintains tempered characteristics of tempered glass. Tempered vacuum glass can be produced in a large scale, and the service lifetime of the tempered vacuum glass can be prolonged.