43results about How to "Prevent missing soldering" patented technology

A double-vacuum-layer metal vacuum composite plate with the edge sealed by a seal strip comprises a housing, at least two core plates and a vacuum cavity and is characterized in that the housing is a low-carbon steel plate or a low-carbon steel composite plate, the core plates are located in the vacuum cavity formed through seal welding of the housing, the core plates provide additional strength for the housing and ensure the smoothness of the housing under atmospheric pressure, the vacuum cavity is welded and sealed by utilizing a glass solder in a vacuum furnace under high vacuum and high temperature, the seal strip is arranged at the welding position of the edge portion of the low-carbon steel plate, the coefficient of thermal expansion of the low-carbon steel plate is matched with that of the glass solder, a partition plate is arranged in the vacuum cavity and divides the vacuum cavity into two to form double vacuum layers, and supports are arranged in the vacuum layers and are independently manufactured or are directly formed on the core plate or the partition plate. A manufacturing method of the double-vacuum-layer metal vacuum composite plate is simple in process, and strength, heat-insulation, sound-insulation and fireproof performance and a decorative function can be improved.

The invention relates to the field of building construction equipment, in particular to a pipe welding device for building construction, comprising a T-shaped frame, a synchronous moving device, fixing devices, clamping devices, positioning devices, trimming devices and a welding device, wherein the synchronous moving device is arranged on the T-shaped frame, the fixing devices are arranged on both sides of the T-shaped frame and are connected with the synchronous moving device, the clamping devices are arranged on both sides of a beam guide rail, the clamping devices are connected with the fixing devices, and the fixing devices move to drive the clamping devices along the beam guide rail to do synchronized motion, the positioning devices are disposed on the sides of the two clamping devices near columns, the trimming devices are disposed on the sides of the clamping devices near the columns, and the welding device is installed above the middle of the beam guide rail. The invention canrealize the automatic welding of the pipe, realize the automatic alignment of the pipe welding part, can prevent the construction pipe material from being broken at the welded part during the rotation process, effectively reduce the labor intensity of the construction worker, and ensure the construction progress and the construction quality.

The invention discloses a bellows assembly of an SF6 valve and a manufacturing method thereof. The bellows assembly comprises a valve rod, a support seat and a bellows, wherein the support seat is fixedly connected with the valve rod, and the valve rod is provided with a circular flange; the bellows is sleeved at the periphery of the valve rod between the circular flange and the support seat; and two ends of the bellows are respectively arranged in annular grooves formed on two oppositely arranged end faces of the circular flange and the support seat, and the bellows and the annular grooves are fixed by means of braze welding. Therefore, by using the bellows assembly of the SF6 valve disclosed by the invention, open welding between the mouth of the bellows and the valve rod as well as the support seat can be effectively avoided, thereby greatly improving the air tightness and service life of the bellows assembly.

A glass composite vacuum panel with sealing strips and mounting holes comprises a surface plate, a connecting layer and a vacuum chamber and is characterized in that the mounting holes are combined with pumping holes and penetrate through the whole composite plate, the surface plate is a glass plate, the vacuum chamber is a closed chamber formed by a metal plate subjected to glass soldering edge sealing at atmospheric pressure and high temperature and high-temperature opening sealing in vacuum, welding portions of the edge of a low-carbon steel plate are provided with the sealing strips, the opening sealing is the automatic sealing of the pumping holes preformed in the vacuum chamber with low-temperature solder in a vacuum furnace according to the principle of liquid seal, the low-temperature solder comprises low-temperature metal and alloy solder, and supporting members are arranged in the vacuum chamber. A manufacturing method of the glass composite vacuum panel with the sealing strips and the mounting holes is simple in process. The manufactured glass composite vacuum panel with the mounting holes can overcome the deficiencies of existing insulation boards and vacuum insulation panels and the strength and thermal insulation, sound insulation and fireproof performance can be improved.

A glass composite vacuum plate with the edge sealed by a seal strip comprises a face plate, a connecting layer and a vacuum cavity and is characterized in that the face plate is a glass plate, the connecting layer enables the face plate and the vacuum cavity to be connected to form a whole, the vacuum cavity is formed by welding a low-carbon steel plate in a vacuum furnace by utilizing a glass solder under the high vacuum and high temperature, the seal strip is arranged at the welding position of the edge portion of the low-carbon steel plate, the low-carbon steel plate is matched with the coefficient of thermal expansion of the glass solder, and a support is arranged in the vacuum cavity and is independently manufactured or is directly formed on the vacuum cavity. A manufacturing method of the glass composite vacuum plate is simple in process, the manufactured glass composite vacuum plate can overcome the shortcomings of existing heat preservation plates and vacuum heat-insulation plates, the air impermeability of the vacuum cavity of the glass composite vacuum plate can be effectively ensured, the service life of the glass composite vacuum plate can be prolonged, and strength and heat-insulation, sound-insulation and fireproof performance can be improved.

A double-vacuum-layer ceramic composite vacuum heat-insulation plate with the edge sealed by a seal strip comprises a face plate, a connecting layer and a vacuum cavity and is characterized in that the face plate is a ceramic plate or is made of ceramic tiles, the vacuum cavity is a closed cavity formed by welding a low-carbon steel plate and sealing the edge by utilizing a glass solder under the constant pressure and high temperature and performing high-temperature sealing under the vacuum condition, the seal strip is arranged at the welding position of the edge portion of the low-carbon steel plate, and the low-carbon steel plate is matched with the coefficient of thermal expansion of the glass solder. The sealing is automatic sealing performed by utilizing an air exhaust opening pre-formed in the vacuum cavity and a low-temperature solder in a vacuum furnace according to a liquid seal principle, a partition plate is arranged in the vacuum cavity and divides the vacuum cavity into two to form double vacuum layers, and supports are arranged in the vacuum layers. A manufacturing method of the double-vacuum-layer ceramic composite vacuum heat-insulation plate is simple in process, the manufactured double-vacuum-layer ceramic composite vacuum heat-insulation plate can overcome the shortcomings of existing heat preservation plates and vacuum heat-insulation plates, and strength and heat-insulation, sound-insulation and fireproof performance can be improved.

A double-vacuum-layer metal vacuum composite panel with sealing strips and mounting holes comprises a housing, a core plate and a vacuum chamber and is characterized in that the mounting holes are combined with pumping holes, the housing is a low-carbon steel plate, the core plate is arranged in the vacuum chamber to provide the housing with additional strength to ensure the smoothness of the housing at atmospheric pressure, the vacuum chamber is a closed chamber formed by the housing subjected to glass soldering edge sealing at atmospheric pressure and high temperature and high-temperature opening sealing in vacuum, welding portions of the edge of the low-carbon steel plate are provided with the sealing strips, the opening sealing is the automatic sealing of the pumping holes preformed in the housing with low-temperature solder in a vacuum furnace according to the principle of liquid seal, a separation plate separating the vacuum chamber into two to form double vacuum layers is arranged in the vacuum chamber, and supporting members are arranged in the vacuum layers. A manufacturing method of the double-vacuum-layer metal vacuum composite panel with the sealing strips and the mounting holes is simple in process. The manufactured double-vacuum-layer metal vacuum composite panel can overcome the deficiencies of existing insulation boards and vacuum insulation panels and the strength, thermal insulation, sound insulation and fireproof performance and decorative functions can be improved.

The invention discloses a macromolecule prefabricated part numerical control heat conduction welding table. The welding table is characterized in that an upper plate of a rack is arranged to be in a semi-notch shape, an electric heating constant-temperature welding system and a cooling system are installed on the upper plate, and an air cylinder controls an electric heating metal welding disc anda copper cooling disc to ascend and descend; and a hollow part for placing a central control servo deceleration system is arranged on a workbench of the rack, a turntable is placed on the workbench, the turntable is divided into a welding station, a cooling station and a preparation station, welding workpieces are sequentially placed at the upper end of the turntable, and the central control servodeceleration system is arranged at the lower end of the turntable to drive the turntable to rotate. A numerical control system and a constant-temperature cooling-water machine are arranged on a lowerplate of the rack. The welding table achieves the technical effects of integrating mechanical, electrical, pneumatic and digital control, and embodying high precision, high quality and high efficiency; and the welding process is safer, more environmentally friendly and more comfortable, the structure is integrated, intelligent and flexible, and the production requirements of workpieces of different specifications can be met.

The invention discloses an integrated circuit processing method and equipment, and the equipment comprises a pedestal, the top of the pedestal is fixedly provided with a positioning plate through a support, one side of the top of the positioning plate is fixedly provided with a console, and the top of the positioning plate is fixedly provided with two solder wire fixing plates through a support. Two tin soldering plates are fixedly arranged on the inner walls of the two tin wire fixing plates, a downward-inclined tin soldering plate is fixedly arranged on the outer wall of one side of each tin soldering plate, a fixing groove is formed in the outer wall of the top of each tin soldering plate, and a fixing sleeve is fixedly arranged on the inner wall of each fixing groove. The top of the integrated circuit board is welded through cooperation of the multiple lead sleeves and the laser tin melting spotlight, after the integrated circuit board moves on the tin soldering plate and the bottom of the tin soldering plate, top tin soldering of the integrated circuit board is completed, the tin soldering efficiency of the top of the integrated circuit board is greatly improved, the using effect is good, and large-scale batch processing of integrated circuit boards in existing factories is met.

A double-vacuum-layer composite vacuum plate sealed by a seal strip comprises a face plate, a core plate and a vacuum cavity and is characterized in that the face plate is fixed to the upper surface outside the vacuum cavity in a welding or bonding mode, the core plate is arranged at the bottom of the inside of the vacuum cavity, the vacuum cavity is formed by welding a thin low-carbon steel plate, the face plate and/or the core plate provide/provides additional strength for the vacuum cavity, the vacuum cavity is welded and sealed by utilizing a glass solder in a vacuum furnace under the high vacuum and high temperature, the seal strip is arranged at the welding position of the edge portion of the low-carbon steel plate, the low-carbon steel plate is matched with the coefficient of thermal expansion of the glass solder, a partition plate is arranged in the vacuum cavity and divides the vacuum cavity into two to form double vacuum layers, and supports are arranged in the vacuum layers. A manufacturing method of the double-vacuum-layer composite vacuum plate is simple in process, and strength, heat-insulation, sound-insulation and fireproof performance and a decorative function can be improved.

The invention relates to a control method of a multi-cavity steel component assembling and positioning mechanism, and belongs to the technical field of multi-cavity steel component assembling equipment. The mechanism comprises a square tube positioning and pressing frame. Two ends of the square tube positioning and pressing frame are provided with square tube positioning and pressing pieces connected with the square tube positioning and pressing frame in a displacement mode. An electromagnet is arranged at a front end of an end primary positioning piece. A lower end of the end primary positioning piece is provided with an end primary positioning piece guide rail which is in sliding connection with the end primary positioning piece. A driving motor is arranged at the rear end of the end primary positioning piece. A rack guide rail parallel to the end primary positioning piece guide rail is arranged below the driving motor. The rack guide rail is movably engaged with the drive motor. Thelower end of a displacement cylinder is provided with a lock pressing piece which is movably contacted. Two ends of a pressing roller are provided with bearing seats which are movably sleeved with the pressing roller. Pressing cylinders are arranged on the bearing seats. According to the control method of the multi-cavity steel component assembling and positioning mechanism, the method has the advantages of being compact in structure, accurate in positioning and integrated in assembling and welding; and the machining precision of the multi-cavity steel components is improved, and the machining period is shortened.