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1106results about How to "Reduce scrap" patented technology

Method for controlling expansion and shrinkage of lamination of multiple layers of boards

InactiveCN103987194AIncrease profitMeet the needs of large typesetting productionMultilayer circuit manufacturePunchingX-ray
The invention relates to a method for controlling expansion and shrinkage of lamination of multiple layers of boards. The method comprises the steps that board incoming quality inspection is conducted, a dimensional stability test is conducted, and a part number is selected according to a test result; according to relevant parameters, an expansion and shrinkage library is established; inner films are produced, and measurement and statistics are conducted on the produced films; punching is conducted on multiple layers of boards which are not laminated; according to the thickness of each board, rivets with appropriate height are selected for riveting; the pattern is adjusted, the lamination conditions are set; lamination is conducted; holes are drilled through an X-RAY target drilling machine. Compared with the prior art, the method for controlling expansion and shrinkage of lamination of the multiple layers of boards has the advantages that the demand for large-composition production is met, production cost is effectively reduced, the utilization ratio of the boards is increased, the production efficiency is improved, and the rejection rate is reduced. Factors influencing control over expansion and shrinkage are controlled, the range of the influence caused by expansion and shrinkage is effectively narrowed, the error rate of drilling is effectively reduced, defective products and scrapped products caused by overall displacement of the multiple layers of boards are reduced, the drilling first-workpiece percent of pass is increased, and halt determination time is shortened.
Owner:奥士康精密电路(惠州)有限公司

Device and method for repairing friction stir welding weld defect of storage tank for carrier rocket

The invention provides a device and a method for repairing a friction stir welding weld defect of a storage tank for a carrier rocket. A repair welding pin tool comprises a tool pin clamping structure and a tool pin, the end face of a shaft shoulder portion of the tool pin clamping structure is a recessed slope provided with two concentric-circle annular grooves, the front of the tool pin is of a conical thread structure, and a conical thread is circumferentially provided with three spiral grooves at intervals. The method includes the steps: firstly, manually excavating the tool pin broke at a friction stir welding weld; secondly, performing solid filling for the weld; thirdly, utilizing the repair welding pin tool to start friction stir welding from a center of the broke position of the tool pin filled with welding wires or materials to a set welding end point; and finally, continuing utilizing the repair welding pin tool to perform friction stir welding for the weld again from a welding start point to the welding end point. The method and the device are capable of guaranteeing the quality of the storage tank for the carrier rocket and decreasing scrapping of the storage tank for the carrier rocket due to the key hole type defect.
Owner:CAPITAL AEROSPACE MACHINERY +1

Thin film for vertical form fill and seal packaging of flowable materials

A multi-layer film for vertical form, film and seal systems for liquid, powder, granules and/or other flowables packaging, said multi-layer comprising: an inner layer made of polyethylene, a blend of polyethylenes or ethylene copolymers; a core, comprising one or more than one layer, made from a blend of polypropylene, linear low density polyethylene, a polymer compatibilizer or tie-layer resin, and/or low density polyethylene, said core being applied against the inner layer; and an outer layer (same or different from the inner layer or the core layer) is made of a polyethylene or a blend of polyethylenes with or without ethylene copolymers, said outer layer being applied against the core and opposite the inner layer; said multi-layer film having an overall thickness of lower or equal to 2.5 mil and at least one of the properties listed hereinafter: a stiffness (as measured by 1% secant modulus in the film direction) varying from 79000 psi to 140000 psi; a tensile strength at yield of from 2100 psi to 3300 psi; (measured in film machine direction) and a tensile strength at break of from 4700 to 6700 psi (measured in film machine direction). A method of forming, sealing and filling a pouch with said film, a pouch formed with said film and use of said film to form a pouch.
Owner:LLOYD GEORGE IAN

Rolling method and equipment for battery pole piece

ActiveCN108199005AImprove consistencyImprove defects such as poor snake shapeElectrode manufacturing processesElectrical batteryPole piece
The invention relates to the technical field of lithium-ion battery manufacturing, in particular to a rolling method for a battery pole piece. The method comprises the steps of making the coated and dried battery pole piece pass through a foil heating device, an electrode preheating device, an electrode rolling device and a thickness curing device in sequence; when the battery pole piece passes through the foil heating device, heating a foil area of the battery pole piece by using the foil heating device; when the battery pole piece passes through the electrode preheating device, heating a coating area of the battery pole piece by using the electrode preheating device; when the battery pole piece passes through the electrode rolling device, applying rolling force of different sizes to theedge part and the middle part of the battery pole piece by using the electrode rolling device to roll the battery pole piece; and when the battery pole piece passes through the thickness curing device, sequentially baking and cooling the battery pole piece by using the thickness curing device. The invention further provides rolling equipment for the battery pole piece. According to the rolling method and the rolling equipment, the thickness consistency of the rolled battery pole piece is effectively improved.
Owner:ZHEJIANG FOREVER NEW ENERGY TECH CO LTD +1

Thin film for vertical form fill and seal packaging of flowable materials

InactiveUS20070254119A1More sealEnhance heat transfer characteristicSynthetic resin layered productsCeramic shaping apparatusPolypropyleneEngineering
A multi-layer film for vertical form, film and seal systems for liquid, powder, granules and/or other flowables packaging, said multi-layer comprising: an inner layer made of polyethylene, a blend of polyethylenes or ethylene copolymers; a core, comprising one or more than one layer, made from a blend of polypropylene, linear low density polyethylene, a polymer compatibilizer or tie-layer resin, and/or low density polyethylene, said core being applied against the inner layer; and an outer layer (same or different from the inner layer or the core layer) is made of a polyethylene or a blend of polyethylenes with or without ethylene copolymers, said outer layer being applied against the core and opposite the inner layer; said multi-layer film having an overall thickness of lower or equal to 2.5 mil and at least one of the properties listed hereinafter: a stiffness (as measured by 1% secant modulus in the film machine direction) varying from 3500 psi to 150000 psi; a tensile strength at yield of from 1700 psi to 3300 psi; (measured in film machine direction) and a tensile strength at break of from 4300 to 7400 psi (measured in film machine direction). A method of forming, sealing and filling a pouch with said film, a pouch formed with said film and use of said film to form a pouch.
Owner:GLOPAK INC

Molten aluminum refining degassing and slag-removing device

The invention relates to a molten aluminum refining degassing and slag-removing device. The molten aluminum refining degassing and slag-removing device comprises a heat insulation furnace and a bracket, wherein the heat insulation furnace is provided with a cover body which is connected with a hoisting plate by a connection rod; the hoisting plate is connected with the bracket by a hydraulic retractable rod; the lower end of the cover body is connected with an agitating shaft; a driving motor is arranged at the upper end of the cover body; the upper end of the agitating shaft vertically penetrates through the cover body and is connected with the driving motor; the lower end of the agitating shaft is arranged in the heat insulation furnace and is further connected with a graphite rotor; an air vent is formed in the surface of the graphite rotor; the agitating shaft is a hollow shaft and is internally provided with an air ventilation pipeline; one end of the air ventilation pipeline stretches out of the agitating shaft to be connected with a nitrogen generator; the other end of the air ventilation pipeline is communicated with the air vent of the graphite rotor. According to the molten aluminum refining degassing and slag-removing device, hydrogen and non-metal impurities in molten aluminum can be removed and the molten aluminum is purified; scrap caused by needle holes and the non-metal impurities after the molten aluminum is cast into a casting is reduced; the inner quality of the casting is improved greatly and the market competitiveness of products is improved.
Owner:LUOYANG ANLUN ALUMINUM PROD

Forging method for efficiently healing hole flaws inside blank with large height-diameter ratio

The invention belongs to the field of forging, and specifically relates to a forging method with a small screw-down rate, which is capable of efficiently healing hole flaws inside a blank with a height-diameter ratio. The forging method adopts a numerical simulation technique to research the distribution status of strain inside the blank in the conventional forging process, thus providing a radial wide anvil compaction process which comprises the following steps of: pressing down the blank by virtue of the radial wide anvil compaction process, wherein flat plates serve as upper and lower anvil; after radial the wide anvil compaction process, returning the blank to a furnace to be re-heated and be subjected to thermal insulation; and turning over the blank by 90 degrees and drawing out the blank by the upper and lower anvil. The forging method is suitable for a free forging process for various blanks (for example continuous-casting blanks) or steel ingots with a large height-diameter ratio and the like, and particularly has good effects on the blank with the large height-diameter ratio and serious centre looseness. Forged pieces produced by the forging method can ensure the healing of the hole flaws inside the blank with the large height-diameter ratio, so that the possibility of forged piece scrapping caused by the loosened and non-forged center of the forged piece is greatly reduced; and moreover, a forged piece with a larger size can be manufactured by virtue of a small screw-down rate.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Linear suspension spring

The invention is a suspension spring apparatus for a vehicle wherein the suspension spring maintains a linear alignment irrespective of the position of the articulating strut, where the articulating strut is selected from the group consisting of: control arms, axle arms, solid axles, adjustable spring tensioning devices, and longitudinal struts. The apparatus is comprised of a compression spring mounted between a pivoting lower seat and a pivoting upper seat, where the pivoting lower seat is coupled to the articulating strut and the pivoting upper seat is coupled to a support element. The support element is static, and serves to support the suspension system, and to distribute the forces generated by the suspension system. The pivoting lower seat and the pivoting upper seat can, in combination, pivot through substantially the same plane as the articulating strut, such that when there is a change in angle of the articulating strut with respect to the support element there is a commensurate change in the pivoting lower seat and the pivoting upper seat. The compensation maintains the compression spring aligned linearly between the pivoting lower seat and the pivoting upper seat. Compression and expansion occurs along the centerline of the spring, and there is no transverse curvature, or other deformation of the spring.
Owner:DOVE JASON L

Riveting and positioning fixture, PCB riveting method, manufacturing method for PCB and PCB

The invention provides a riveting and positioning fixture. The riveting and positioning fixture comprises a fixture body; two opposite sides of the fixture body are respectively provided with a plurality of rivet installation holes; one of the other two opposite sides of the fixture body is provided with a first positioning slide groove extending along a Y-axis direction, and the other of the other two opposite sides of the fixture body is provided with a second positioning slide groove extending along an X-axis direction; and a pin can slide in the first positioning slide groove and the second positioning slide groove and can be fixed at a designated position. The invention also provides a PCB riveting method, a manufacturing method for a PCB and the PCB. According to PCB riveting technology provided by the invention, riveting requirements of all standard jointed board products can be met only by manufacturing one riveting and positioning fixture, so production management is simplified; a pulling force generated in the riveting process can be effectively reduced, thereby avoiding scraping caused by dislocation and improving product yield; after pressing, rivets are drilled out through drilling, so the problems of board separation and delamination at positions where the rivets are located in later processing are overcome.
Owner:PEKING UNIV FOUNDER GRP CO LTD +1

Battery gas-discharging equipment and use method thereof

ActiveCN102263206AReduce battery wasteFacilitates overall assemblyCell component detailsPneumatic pressurePower battery
The invention provides battery gas-discharging equipment and a use method thereof, which are used for reducing abandonment possibility due to battery breakage and causing power batteries to be more practical. The battery gas-discharging equipment comprises a box body, wherein the box body is movably provided with a box cover, a vacuum pumping pipeline port communicated with the inside and outsideof the box body and a scavenging air valve; the box body is connected with a vacuum pumping device by the vacuum pumping pipeline port; a box body wall or the box cover is provided with a spindle in a motive seal penetration mode; and one end stretching into the box body, of the spindle is provided with a matching part which is matched with safety valves of the batteries. The battery gas-discharging equipment can carry out vacuum air discharge on the batteries after the batteries are formed and before the batteries leave a factory, so that a great quantity of gases generated by the formed batteries can be discharged, and the batteries are sealed when the inside of each battery is in a negative pressure state, thus avoiding the battery abandonment caused by breakage of an explosion-proof valve film because the air pressures inside the batteries are too high, ensuring that the outer sizes of the batteries are not changed, and being beneficial to integrally assembling battery packs.
Owner:奇瑞新能源汽车股份有限公司
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