41results about How to "Avoid direct soldering" patented technology

The invention provides a vertical rod fixing piece comprising a fixing sleeve, a fixing rod and a fastening assembly. An inner cavity of the fixing sleeve can be connected with the outer contour of anI-shaped steel cantilever beam in attached and sleeving modes. The fastening assembly is arranged on the fixing sleeve and used for firmly mounting the fixing sleeve on the exterior of the I-shaped steel cantilever beam. The fixing rod is welded to the fixing sleeve and used for inserting and fixing a vertical rod of a scaffold. According to the vertical rod fixing piece, by using the fixing sleeve with the welded fixing rod, the situation that the fixing rod is directly welded to the I-shaped steel cantilever beam is avoided, and the damage hidden danger of the I-shaped steel cantilever beamand the fixing rod in construction operation due to stress concentration is reduced; during mounting and demounting, an I-shaped steel cantilever beam without a welded fixing rod can penetrate through a shear wall independently, the aerial operation procedures are simplified, and the construction risks are reduced; and meanwhile, the collision deformation risk of scaffold parts in the process that the scaffold parts are stored and transported to other sites is also avoided. On the basis of the vertical rod fixing piece, the invention further provides the scaffold.

The invention discloses a preparation method for a high-porosity silver electrode. The preparation method comprises the steps of 1, taking silver acetate powder as a raw material for manufacturing the high-porosity blank silver electrode, taking a silver net as an electrode skeleton, filling the silver acetate powder into a hopper of a roller press and putting the silver net on a reel of the roller press, adjusting the thickness range of the prepared silver electrode to be 0.45-0.55mm and cutting into required dimensions; stamping and molding the cut electrode by a die; sintering the cut silver electrode at the temperature of 300 DEG C plus or minus 20 DEG C for 20 min; and obtaining the high-porosity blank silver electrode; 2, cutting the blank silver electrode into long-strip-type silver foil strips with length of 200mm and width of 20mm, punching a circular hole in one end of each silver foil strip by a drilling machine to be used as a connecting hole, and preparing a silver guide lug; 3, welding the silver guide lug on the sintered high-porosity blank silver electrode by a spot welding machine; and 4, battery formation: connecting the high-porosity blank silver electrode welded with the silver guide lug with a stainless steel auxiliary pole plate through the guide lug for assembling into the formed battery.

The invention discloses a semiconductor packaging device, a semiconductor lead frame and a rib-cutting method thereof. The semiconductor packaging device comprises a packaging housing; a semiconductor device encapsulated in the packaging housing; and pins to be electrically connected with the semiconductor device and exposed out of the packaging housing. The two side, adjacent to the packaging housing, of each pin have square-wave structures each formed by two protrusions and a groove. The protrusions and the grooves are arranged successively and alternately along the length direction of the pin. When the pins and a PCB are soldered, soldering tin gathers in the grooves. The semiconductor lead frame and the rib-cutting method thereof are used for manufacturing the semiconductor packaging device. The semiconductor packaging device, the lead frame and the rib-cutting method thereof can improve the soldering performance and reliability of the pin and the PCB.

The invention discloses a pipeline welding structure for a pull pipe construction method. The pipeline welding structure comprises an outer sleeve at a pipeline joint, more than one welding slot is arranged at each of two ends of the outer sleeve, the welding slots do not run through the pipe wall of the outer sleeve; at two sides of the outer sleeve and in the welding slots, the outer sleeve is welded with a pipeline in the outer sleeve; on the inner wall of the outer sleeve, a first welding rod, a second welding rod, a third welding rod and a fourth welding rod are arranged in the middle of the outer sleeve; the pipeline joint is located between the second welding rod and the third welding rod; and the first welding rod, the second welding rod, the third welding rod and the fourth welding rod are connected between the outer sleeve and the pipeline in a sealed way by adopting a hot melting manner. The pipeline welding structure is simple in structure, and the arrangement of the outer sleeve structure ensures the firmness and tightness of welding of two pipelines in long-distance traction and drawing.

The invention discloses an electronic product provided with a metal connecting structure. The electronic product comprises a metal shell and at least one metal part which is fixed at the inner side of the metal shell by hot melt adhesive layer. In addition, the invention also discloses a method for preparing the electronic product provided with the metal connecting structure. The electronic product has the advantages of simple preparation and elegant appearance.

The invention discloses a cell connection sheet, a battery and an assembly method. The cell connection sheet includes a body, a cell connection part and a welding connection part. The cell connection part is arranged on one side of the body and is electrically connected to the tab of the cell. The welding connection part is arranged on the other side of the body, electrically connected with the pole of the battery, and the welding connection part can be bent relative to the body. By setting the battery connection part on the battery connection piece, the tabs of the battery can be welded and fixed on the battery connection part one by one, so as to realize the pre-collection of the positive and negative poles of the battery and avoid the positive and negative of all the batteries. The poles are directly welded on the pole of the battery, and at the same time, it can ensure the overcurrent capacity of each connection position during the current collection process of the battery. In addition, the welding connection part on the cell connection piece is connected to the pole of the battery, and finally realizes the current collection of the positive and negative electrodes of multiple cells, which can avoid the welding difficulty caused by the excessive number of tabs welded on the pole. Thereby improving welding quality.

The invention relates to an extraction multi-chamber mixer used in antibiotic production. The mixer of the invention comprises a cylindrical shell, wherein the two ends of the cylindrical shell are provided with a charge tube and a discharge tube; a certain number of dummy plates are arranged in the shell to divide the interior of the shell into multiple mixing chambers; half of the dummy plates are entities, and the other half of the dummy plates are sieve plates distributed with through holes; the adjacent mixing chambers are communicated through the sieve plates; a central tube is arrangedat the middle part of the dummy plates in a penetrating mode, and the length of the central tube is matched with that of the cylindrical shell; one end of the central tube, which is close to the discharge tube, is enclosed; the other end of the central tube, which is close to the charge tube, penetrates out from the cylindrical shell through a bent tube; all the parts of the central tube, which are in the mixing chambers, are provided with air hole; and the upper part of each mixing chamber is provided with an exhaust tube. The mixer has high mixing efficiency and can fully mix materials and improve extracting speed and effect.

The invention discloses a preparation method of a large-porosity silver electrode, comprising: step 1, the raw material of the large-porosity blank silver electrode is silver acetate powder, the electrode skeleton is a silver mesh, the silver acetate powder is loaded into the hopper of a roller press, and the silver Load the net into the reel of the roller press, adjust the thickness of the prepared silver electrode to 0.45-0.55mm, and then cut it into the required size; punch the cut electrode into a mold; put the punched silver electrode at 300°C Sinter at ±20°C for 20 minutes; prepare a rough silver electrode with large porosity; step 2, cut a long strip of silver foil with a length of 200 mm and a width of 20 mm, and punch a circular hole at one end of the silver foil with a punching machine as a connection hole, and prepare the silver guide lug; Step 3, weld the silver guide lug on the sintered large-porosity blank silver electrode with a spot welder; Step 4, form a battery: weld the large-porosity blank electrode with the silver guide lug It is connected with the stainless steel auxiliary plate by lugs and assembled into a formation battery.

The invention discloses a manufacturing method of an amorphous metal thin strip corrosion electrode, relates to the technical field of electrode corrosion, and solves the problems of poor stability of electric signal transmission, easy damage of the thin strip body and easy external interference of electric signals in the existing electrode corrosion. The key points of the technical solution are: select the copper clad laminate; remove the oxide layer on the copper clad surface; weld the contact between the wire and the copper clad surface firmly; remove the oxide layer on the thin strip body, Place some copper sheets between the copper surfaces and wrap them with water-sealing tape; use a glue gun to three-dimensionally seal the copper-clad laminate and the thin strip body, and reserve the parts to be corroded; use anti-corrosion materials to repeatedly smear and dry the parts that do not need to be corroded Dry, with the effect of ensuring the effective transmission of electrical signals during electrode corrosion, the integrity of the thin strip, and preventing the thin strip from shaking in the corrosive liquid, reducing the effect of external interference on electrical signals. This patent has been supported by the Science and Technology Fund of Guizhou Province (Qian Ke He J Zi [2014] No. 2122).

The invention relates to an end connection structure and method for a high-temperature superconducting cable. The structure comprises a first end connection structure and a second end connection structure. In a to-be-connected superconducting strip material layer, each superconducting strip material is connected with one transition copper strip material. The end connection structure passes throughthe high-temperature superconducting cable, and the transition copper strip materials are clamped and fixed through the end connection structure. Finally, a current lead wire is connected to the endconnection structure. The transition copper strip materials prevent the direct welding of a superconducting strip material with the current lead wire, and the contact parts of the transition copper strip materials with the end connection structure are not welded, thereby preventing the end welding process from affecting other superconducting material layers. Each superconducting strip material isindependently welded with the corresponding transition copper strip material, thereby facilitating the control of the welding length. The connection of the end connection structure and the current lead wire is bolt connection, thereby facilitating the assembly, disassembly and transportation. According to the invention, one lead wire can be independently led out of any conductor layer, and a current of each cable layer can be controlled independently.

A boiler tube bundle suspension device, comprising a tube bundle (1), a pair of clamping steel plates (2), a end plate suspension device (3) and a suspension tube suspension device (4); the tube bundle (1) is connected with the clamping steel plate (2) via a pre-embedded part, the end plate suspension device (3) comprises an end plate (31) and an end plate support part (32) disposed on the end plate (31), and the suspension tube suspension device (4) comprises a suspension tube (41) and a suspension tube support part (42) disposed between the suspension tubes (41); one end of the clamping steel plate (2) is disposed on the end plate suspension device (3) and the other end is disposed on the suspension tube suspension device (4), or the two ends are both disposed on the suspension tube suspension device (4); the end plate support part (32) comprises a holding plate (321) and a support plate (322), the holding plate (321) is disposed on the end plate (31), the clamping steel plate (2) is connected with the support plate (322) and disposed on the clamping plate (321) via the support plate (322). The device can suspend the tube bundle (1) simply and conveniently, and provide a very good condition for the expansion under load of the tube bundle (1), avoiding interference with other parts and, at the same time, saving cost by eliminating spring hangers.

The invention relates to the technical field of circuit boards, and particularly discloses a manufacturing method of an embedded circuit board, the embedded circuit board and application, the method comprises the following steps: providing a substrate, embedding an electronic device in the substrate, arranging a bonding pad on the surface of one side of the electronic device, and flushing the endsurface of the bonding pad with the surface of the same side of the substrate; forming a metal layer on the surface of one side, close to the bonding pad, of the substrate; and patterning the metal layer to obtain the circuit board with the bonding pad covered with the metal layer, the metal layer on the bonding pad protruding out of the surface of the same side of the substrate. By means of the above manner, secondary processing can be conducted on the bonding pads on the substrate according to user requirements, and then the embedded circuit board meeting different product performance requirements of users is manufactured.

The invention discloses a seven-electrode conductivity sensor with a novel structure. In the invention, seven platinized film ring electrodes are arranged at the inner wall of the honeycomb duct of a conductance cell up and down; a cylindrical bore penetrating through the duct wall of the honeycomb duct is arranged in a ring groove at the inner wall of the honeycomb duct corresponding to each ring electrode, and the cylindrical bore is internally provided with platinized film inner layers; the platinized film inner layer at the inner port of the cylindrical bore is connected with the platinized film ring electrode, and the platinized film inner layer at the outer port of the cylindrical bore forms a thickened platinized film welding ring; the thickened platinized film welding ring is welded with one end of a platinum lead wire at the outside of the honeycomb duct, and the other end of the platinum lead wire is welded with a copper conductor which is connected with a signal conversion circuit in the pressure-proof watertight shell of the sensor; and elastic sealing grease is casted into the cylindrical bore penetrating through the duct wall of the honeycomb duct, thus the platinum lead wire is prevented from being directly welded on the quartz duct wall of the honeycomb duct, the sealing property of the honeycomb duct and the stability of the sensor are improved, and the advantages of high precision, convenient field usage and the like of the sensor are fully expressed.

The invention provides a lifting cylinder shaft assembly of a mining dump truck. The lifting cylinder shaft assembly of the mining dump truck comprises a lifting cylinder support, a lifting cylinder shaft, an end cover and a gland, wherein the lifting cylinder support is provided with a shaft hole, the lifting cylinder shaft is provided with a shaft shoulder, a shaft section, at one side of the shaft shoulder, of the lifting cylinder shaft is installed in the shaft hole of the lifting cylinder support, the end cover is arranged at the end of the shaft section, at the other side of the shaft shoulder, of the lifting cylinder shaft, and the gland is axially arranged on the shaft shoulder in a pressing mode and fixed to the lifting cylinder support. The lifting cylinder shaft assembly of the mining dump truck is simple in structure and easy to machine, and the lifting cylinder shaft is high in strength, not damaged easily, stable and reliable in axial fixation, high in size accuracy and installation accuracy, and easy to detach and replace.

The invention relates to a burr isolating agent for a continuously cast steel billet and a burr removal method. Before cutting of the continuously cast steel billet, the burr isolating agent is sprayed onto the lower surface of the continuously cast steel billet along a cutting track, and then the continuously cast steel billet is cut; after burrs generated during cutting detach from a continuouscast steel billet body, under the isolating effect of the burr isolating agent, the burrs directly shed or are bonded to the continuously cast steel billet body through the burr isolating agent instead of being directly in contact with the continuously cast steel billet body and welded to the continuously cast steel billet body; the continuously cast steel billet is conveyed into a heating oven for heating after cutting is finished, and since the burr isolating agent loses effect under high temperature, the bonded burrs automatically shed from the continuously cast steel billet body. The purpose of completely removing the burrs without damaging the continuously cast steel billet body can be achieved.