161results about How to "Guaranteed bending performance" patented technology

The invention belongs to the technical field of steel making and discloses a leveling method for cross break defects on the surface of a hot-rolled and acid-pickled plate. The leveling method comprises the steps that constant-rolling-force control is adopted by a hot-roll leveling unit, and a leveling and straightening mode is selected; a strategy of segmented pressure control over a deep bending roller is adopted, and the pressure of the deep bending roller is adjusted according to the cross sectional area of strip steel; and the elongation of the strip steel is controlled to be 3%-3.5%. By the adoption of the leveling method for the cross break defects on the surface of the hot-rolled and acid-pickled plate, the cross break defects are effectively eliminated; meanwhile, leveling operation is simplified, the probability of secondary leveling is lowered, and thus the product quality is improved.

The invention relates to a low-attenuation bending insensitive single mode fiber which comprises a core layer and wrapping layers. The low-attenuation bending insensitive single mode fiber is characterized in that the relative refractive index difference delta1 of the core layer ranges from 0.30% to 0.38%, the radius R1 of the core layer ranges from 3.5 micrometers to 4.5 micrometers, the four wrapping layers are arranged outside the core layer, the first wrapping layer is a first inner wrapping layer tightly surrounding the core layer, the relative refractive index difference delta2 of the first wrapping layer ranges from -0.02% to 0.02%, the radius R2 of the first wrapping layer ranges from 6.5 micrometers to 8.5 micrometers, the second wrapping layer is a second inner wrapping layer tightly surrounding the first inner wrapping layer, the relative refractive index difference delta3 of the second wrapping layer ranges from -0.02% to 0.02%, the radius R3 of the second wrapping layer ranges from 8 micrometers to 11 micrometers, the third wrapping layer is a downwards-concave wrapping layer tightly surrounding the second inner wrapping layer, the relative refractive index difference delta4 of the third wrapping layer ranges from -0.5% to -0.2%, the radius R4 of the third wrapping layer ranges from 12 micrometers to 20 micrometers, and the fourth wrapping layer is an outer wrapping layer tightly surrounding the downwards-concave wrapping layer and is a pure quartz glass layer. The low-attenuation bending insensitive single mode fiber can be completely matched with a G.652.D optical fiber, and therefore the low attenuation, the large effective area and the bending resistance can be better unified.

The invention discloses a flexible display panel and a flexible display apparatus. The flexible display panel comprises a flexible substrate with a display region and a bonding pad region, and multiple display elements arranged on the display region of the flexible substrate. The display region and the bonding pad region of the whole flexible substrate are covered with a protection film, and a bonding layer is directly arranged in the space between the protection film and the display elements and in the space between the binding region of the flexible substrate and the protection film separately, only single adhesive exists in the welding region between the flexible substrate and the protection film; when the flexible display panel is bent under stress, it is ensured that a strain neutral layer in the welding region of the flexible display panel can be positioned in the bonding layer, so that the risk of line breaking caused by cracks of a signal trace in the welding region due to overhigh stress can be avoided; and by virtue of the bonding layer, the elasticity modulus can be controlled within a range of 0.5-10MPa, so that the bonding layer has relatively high flexibility, thereby ensuring the buckling performance of the flexible display panel.

The invention discloses strip-casting 550-MPa-level weathering resistant steel and a production method thereof. The method comprises the steps of 1), smelting: the chemical components of molten steelcomprises C lower than 0.03%, 0.20-0.80% of Si, Mn lower than 1.0%, 0.03-1.50% of P, S lower than or equal to 0.008%, N lower than or equal to 0.008%, 0.40-1.50% of Cu, 0.05-1.50% of Cr, Ni lower than0.10%, 0.05-0.20% of Nb and the balanced Fe and unavoidable impurities; 2), strip casting: continuous casting is conducted on molten steel on which qualified smelting is conducted by a pair of coppercasting rolls which are rotated in the same directions to produce a casting strip with the thickness of 1.4-2.5 mm, and the superheating of the molten steel is controlled to be lower than 80 DEG C; 3), casting strip online hot rolling: the hot rolling pressing amount is 15-65%, the temperature of pressed strip steel is 950-1050 DEG C; 4), cooling and winding: the temperature of strip steel on which hot rolling is conducted is cooled down to 450-600 DEG C through atomizing cooling to obtain fine and uniform ferrite and less amount of pearlite tissues. The 550-MPa-level weathering resistant steel has the advantages of short production procedure, low production cost, good strip steel shape and easy welding.

The invention discloses a torsion resistant photoelectric composite medium-voltage drum cable. The torsion resistant photoelectric composite medium-voltage drum cable comprises a plurality of power line cores and a plurality of ground line cores which are twisted together to form a cable core, as well as at least one optical unit, a special chloroprene rubber inner sheath wrapping the cable core, a reinforcing layer which is woven at the exterior of the special chloroprene rubber inner sheath and is embedded in the special chloroprene rubber inner sheath, and a special chloroprene rubber outer sheath wrapping the reinforcing layer; in power line core conductors and ground line core conductors, the stranding directions of two adjacent layers are opposite, and the stranding direction of each layer is opposite to the stranding direction of strand lines in a corresponding layer; the reinforcing layer is a terylene wire-woven reinforcing layer; insulating layers in the power line cores are ethylene propylene rubber layers; loose bushings are made of polybutylene terephthalate plastics; water-resisting yarns are made of water-resisting aramid fibers; thixotropic composites are made of factice; and nonmetallic reinforcing members are made of aramid fibers. With the torsion resistant photoelectric composite medium-voltage drum cable of the invention adopted, the special chloroprene rubber sheaths are adopted as the inner sheath and the outer sheath of the cable, and therefore, the torsion resistant photoelectric composite medium-voltage drum cable has excellent low temperature resistance, wear resistance, oil resistance and other properties, and the service life of the cable can be prolonged.

The invention discloses a method for manufacturing a photoelectric composite medium-voltage drum cable. The photoelectric composite medium-voltage drum cable comprises power line cores, ground line cores, at least one optical element, a special neoprene inner sheath wrapping a cable core, a reinforcing layer which is woven at the exterior of the special neoprene inner sheath and embedded in the special neoprene inner sheath and a special neoprene outer sheath wrapping the reinforcing layer; chlorinated polyethylene rubber materials include the following components of: a chlorinated polyethylene raw rubber, magnesium oxide, dibasic lead sulfate, lead sulfate tribasic, paraffin, chlorinated paraffin, antioxidant, namely, poly(1,2-dihydro-2,2,4-trimethyl-quinoline), a reinforcing agent (carbon black), flame retardant (antimony oxide), a filler (talcum powder), a filler (calcium carbonate), a reinforcing and filling agent (white carbon black), a vulcanizing promoter (triallyl isocyanurate), and a vulcanizing agent (dicumyl peroxide). With the method for manufacturing the photoelectric composite medium-voltage drum cable of the invention adopted, the cable can still keep excellent insulation performance under high temperature burning and humid conditions, and it can be ensured the cable can work normally for a long time under burning, mechanical percussion and water spraying situations.

The invention discloses an intelligent anti-interference low-smoke halogen-free flame-retardant loadable monitoring type medium-voltage cable. The intelligent anti-interference low-smoke halogen-freeflame-retardant loadable monitoring type medium-voltage cable comprises an outer sheath, a steel wire load layer, an inner sheath and a cable core, wherein the outer side of the cable core is extrudedwith the inner sheath, the steel wire load layer is wrapped on the outer side of the inner sheath, and the outer side of the steel wire load layer is extruded with the outer sheath; and the cable core comprises elastic fillers, a fixed support, 6 elastic guide belts, 3 power cable cores, 3 monitoring cable cores and an optical transmission cable core. According to the invention, the inner sheath,the steel wire load layer and the outer sheath are sequentially wrapped outside the cable core, and the fixed support arranged inside the cable core is used for improving the structural strength andthe bending performance of a cable, so that the cable can be conveniently laid and used in a complex mine, the real-time monitoring picture information of an underground production site is effectivelytransmitted, the loading force of the cable is improved, the safety of the load is ensured, the cable can be effectively prevented from burning when a fire disaster occurs, the cable is prevented from burning to generate toxic gas, and the pollution to the environment is reduced.

The invention provides a high temperature resistance extrasoft fluoroplastic insulation branch cable component. The component is characterized in that the component adopts a structure mode of a master control cable and a plurality of branch cables, wherein conductor wire cores among the master control cable and each branch cable are connected by silver-plated connectors; a high temperature resistance heat shrinkage bushing arranged outside the silver-plated connector is taken as an envelope; a tinned copper wire woven shield, an F4 tape wrapping layer and a restrictive coating made of aramid fiber are formed on the outer layer of the envelope in sequence; the cable structure of the master control cable and each branch cable uses a shield signal wire as an inner ring and an operating line as an outer ring. The component can greatly reduce the consumption of wire bundles, is convenient for construction, can meet special performance requirement, such as high and low temperature resistance, fire retardation, climate resistance, corrosion resistance, aging resistance, mold resistance, reliability, flexibility, small volume, light weight and the like.

The invention discloses strip-casting 700-MPa-level weathering resistant steel and a production method thereof. The method comprises the steps of 1), smelting: the chemical components of molten steelcomprises C lower than 0.03%, 0.20-0.80% of Si, Mn lower than 1.0%, 0.03-1.50% of P, S lower than or equal to 0.008%, N lower than or equal to 0.008%, 0.40-1.50% of Cu, 0.80-1.50% of Cr, Ni lower than0.10%, 0.05-0.20% of Nb, 0.05-0.20% of V and the balanced Fe and unavoidable impurities; 2), strip casting: continuous casting is conducted on molten steel on which qualified smelting is conducted bya pair of copper casting rolls which are rotated in the same directions to produce a casting strip with the thickness of 1.4-2.5 mm, and the superheating of the molten steel is controlled to be lowerthan 80 DEG C; 3), casting strip online hot rolling: the hot rolling pressing amount is 15-65%, the temperature of pressed strip steel is 950-1050 DEG C; 4), cooling and winding: the temperature of strip steel on which hot rolling is conducted is cooled down to 300-450 DEG C through atomizing cooling to obtain fine and uniform ferrite and less amount of pearlite tissues. The 700-MPa-level weathering resistant steel has the advantages of short production procedure, low production cost, good strip steel shape and easy welding.

The invention discloses a display screen and electronic equipment, the display screen comprises a flexible display screen body (100), connecting glue (200) and a protective layer (300), the flexible display screen body (100) is connected with the protective layer (300) through the connecting glue (200), and the protective layer (300) covers the connecting glue (200); the flexible display screen body (100) comprises a first area, a second area and a third area. The third area is located between the first area and the second area, the protective layer (300) is provided with at least two concaveparts (310) corresponding to the third area, and the concave parts (310) are arranged at intervals in the extending direction of the bending axis of the flexible display screen body (100). The schemecan solve the problem that the display screen is easy to damage.

The invention discloses assembling equipment and an assembling process for an automobile pedal assembly, which are applied to the assembling of an automobile pedal. The assembling equipment for the automobile pedal assembly comprises an initial assembling device and a pressing fixing device; the initial assembling device comprises an operating floor, cylinder push-on assemblies, plastic part locating pieces, push-on switches and metal part support locating pieces, wherein the cylinder push-on assemblies, the plastic part locating pieces, the push-on switches and the metal part support locating pieces are arranged on the operating floor; the pressing fixing device comprises a worktable, a product locating seat, cylinder fixing assemblies, first cylinder bending assemblies, a second cylinder bending assembly and a control switch, wherein the product locating seat, the cylinder fixing assemblies, the first cylinder bending assemblies, the second cylinder bending assembly and the control switch are arranged on the worktable; initial assembling and locating are performed on all components of the automobile pedal through the initial assembling device; metal feet of the automobile pedal are bent and fixed through the pressing fixing device, and finally, rivet installation is performed. The invention aims at solving the problems of difficult assembling, low assembling precision and low efficiency of the existing automobile pedal assembling technology.

The invention discloses a pressure resistant heat exchanger comprising a housing. Bent units are arranged in the housing at intervals, are provided with liquid accommodating cavities inside and are provided with liquid inlets and liquid outlets; partitions matching with the bent units in shapes are arranged in the bent units at internals, two sides of the partitions are fixedly connected to first bent plates and second bent plates of the bent units, the partitions are provided with through holes, smoke channels are formed between the adjacent bent units, one ends of the smoke channels are provided with smoke inlets, the other ends are provided with smoke outlets, and the sections of the liquid cavities and smoke channels are in continuous bent structures. The pressure resistant heat exchanger is simple in structure, the bent units are adopted and the liquid cavities and smoke channels in the continuous bent structures are arranged in the housing, structure is compact, and size is small; the pressure resistance of the bent units is improved by arranging the partitions in the bent units.

The invention discloses a prefabricated on-site bending forming connecting device, an FRP rib bending forming method and an FRP rib material. The connecting device comprises a connecting piece, the two ends of the connecting piece are provided with a first end and a second sleeve respectively, and the first end comprises a casing pipe, a telescopic pipe and a first sleeve which are fixedly connected in sequence. A curing agent capsule and an epoxy resin capsule body are arranged outside the connecting piece, after a telescopic pipe is stretched, the tail end of the first sleeve is arranged onthe second sleeve in a sleeving mode, the telescopic pipe wraps the connecting piece, the curing agent capsule and the epoxy resin capsule body, and a blade is fixed in the first sleeve. By utilizingthe property that a curing agent and epoxy resin glue are cured after being mixed, the curing agent and the epoxy resin glue are separated firstly, and when bending is needed, the blade is driven to move by means of the telescopic performance of the telescopic pipe, so that the curing agent and the epoxy resin glue are mixed to connect and fix FRP ribs broken due to bending.

The invention discloses an inner embedding tooth and outer gear coupler type double-layer drill rod, which comprises a double-layer drill rod body, wherein the double-layer drill rod body comprises an outer pipe, an inner pipe, an upper joint, a lower joint, an upper sealing ring and a lower sealing ring; the inner pipe and the outer pipe are arranged in the same axial direction; a gap is formed between the inner pipe and the outer pipe; the upper joint is arranged at the upper end of the outer pipe; the lower joint is arranged at the lower end of the outer pipe; the upper joint and the lower joint are respectively and fixedly connected with the outer pipe to form a bearing structure of the drill rod; the upper sealing ring and the lower sealing ring are respectively positioned in the upper joint and the lower joint of the drill rod and are connected with the inner pipe to form an inner layer structure of the drill rod; inner embedding teeth are arranged inside the upper joint along the circumferential direction; outer embedding teeth are arranged outside the lower joint along the circumferential direction; the outer periphery of the upper joint and the outer periphery of the lower joint are provided with outer gears in the same structures; an inner gear sleeve sleeves the outside of the outer gear of the lower joint. The drill rod provided by the invention is used as an engineering drilling machine drill rod, is used for power transmission and airlifting reverse circulation fluid transmission, and has the advantages that the bearing is safe, the fast dismounting can be realized, and the double-layer sealing is reliable.

The invention discloses a super-flexible intelligent-control photoelectric composite cable for high-speed video transmission. The super-flexible intelligent-control photoelectric composite cable for high-speed video transmission can simultaneously meet the requirements of video signal transmission, control signal transmission and electricity energy supplying; the composite cable comprises opticalunits, electric units, data lines, a reinforcing core, and a cable core; a bending loss insensitive tight-buffered optical fiber serves as an optical fiber, the surface of the optical fiber is wrappedwith a nylon tight-buffered layer in an extruded mode, the exterior of the nylon tight-buffered layer is reinforced through water blocking aramid, and the exterior of the water blocking aramid is wrapped with an optical fiber protecting bush in an extruded mode; tinned copper stranded conductors serve as conductors, and the surfaces of the electric unit conductors are wrapped with crosslinked polyethylene insulation materials in an extruded mode; the data lines adopt bare copper stranded conductors, and the surfaces of the data line conductors are wrapped with high-density polyethylene insulating materials in an extruded mode; the reinforcing core adopts vertically-placed aramid yarn, and the surface of the aramid yarn is wrapped with a reinforcing core protecting sleeve in an extruded mode; the cable core comprises the two optical units, the four electric units, the two data lines and the reinforcing core, the center of the reinforcing core is vertically placed, and the two optical units, the four electric units and the two data lines surround the reinforcing core; and the cable core is externally provided with a wrapping tape, a shielding part and an outer protecting sleeve in sequence.

The invention relates to the field of drainage, in particular to a rainwater management system capable of quickly draining rainwater. The rainwater management system comprises a drainage plate, a drainage network and a permeable layer, wherein the permeable layer covers the drainage network, and the drainage network at least comprises a unit area, a plurality of siphon variable-flow devices which are distributed on the periphery of the unit area and are connected through drainage grooves and are used for discharging water out of the unit area, a plurality of variable-flow drainage devices which are distributed on nodes of the drainage network in the unit area and are connected with one or more siphon variable-flow devices through drainage grooves so as to directionally guide water in different positions in the unit area to the siphon variable-flow devices and drainage plates which are distributed among the drainage grooves and are used for receiving water permeated from the permeable layer in the unit area and guiding the water into the drainage grooves. The relation among the drainage plates, the drainage grooves, the variable-flow drainage devices and the siphon variable-flow devices are reasonably arranged, so that the drainage efficiency is improved step by step, and an efficient drainage system is formed.

The invention provides a flexible electronic device and a fabrication method thereof. The flexible electronic device comprises a first flexible substrate, wherein a circuit and a first runner are arranged on the first flexible substrate, the first runner extends along a wriggling shape, and the first runner is filled with a non-Newtonian fluid. By the flexible electronic device, the bending performance is ensured, and relatively good impact-resistant capability can be provided for the circuit.

The invention discloses a large-size angle steel high-frequency heating single-face bending machine used for an extra-high voltage iron tower. The large-size angle steel high-frequency heating single-face bending machine comprises a base. Workpiece placing racks are symmetrically fixed to the front end and the back end of the top surface of the base. A pressing block is connected to the position above the workpiece placing racks in an up-down movement mode. A bending pressing die is fixed to the bottom surface of the pressing block and located between the workpiece placing racks. The pressing block provides the driving force through a hydraulic piston which is fixed to a top plate. The top plate is fixed to the base through vertical posts. High-frequency heating machines are arranged on the left side and the right side of the base correspondingly. The shape defined by heating coils of the high-frequency heating machines is the same as that of a bent and deformed region of a workpiece. By means of the structure of the large-size angle steel high-frequency heating single-face bending machine, the high-frequency heating machines and the bending mechanism are combined together, and after being heated, the workpiece can be bent immediately without turnover, so that the heat loss is avoided, and energy consumption is reduced; and meanwhile workpiece turnover is omitted, the production efficiency is improved, and the hidden danger that an operator is scalded by the workpiece in the workpiece turnover process is also avoided.

The invention discloses an optical cable mounting method and mounting fixture. The optical cable mounting method includes that confirming a mounting route, the mounting fixture and laying optical cable, wherein the fixture is made of transparent material and arranged along the mounting route, the fixture comprises a plane turning fixture and an external corner turning fixture, the external corner turning fixture can be divided into two straight fixtures along the central line, the plane turning fixture can make the optical cable turn on the same plane, the external corner turning fixture can make the optical cable perform right-angle turning at the external corner, and the two straight fixtures are correspondingly arranged at internal corners and capable of making the optical cable perform right-angle turning at the internal corners. The optical cable mounting method does not depend on tools, the operation is easy and convenient to perform, the mounting is quick and flexible, and the concealment is strong.