125results about How to "Not easy to roll" patented technology

The invention relates to an offline hybrid stacking method and system. The method comprises the steps of acquiring the attribute information of each box and the parameter information of a tray, and numbering all boxes according to the volumes of the boxes from big to small; stacking the boxes on the tray from bottom to top according to the number of the boxes in a layered manner, and acquiring aninitial stacking sequence and the utilization rate of a corresponding initial tray; regulating the initial stacking sequence for many times, and acquiring the maximum value of the tray utilization rate; and taking the stacking sequence corresponding to the maximum value of the tray utilization rate as the optimal stacking sequence of the boxes, and output the optimal stacking sequence. According to the offline hybrid stacking method, cuboid boxes of different sizes can be stacked in a hybrid manner, and the stacking stability can be ensured; the horizontal layered stacking is achieved, and theoffline hybrid stacking method has the advantages that the stacking stability is high, and the stacking by a robot is facilitated; the utilization rate of the tray is high, etc., and the automation and intelligence of the hybrid stacking process are achieved.

The invention relates to a woodworking tool machine for original wood processing that comprises the vertical track base with both ends sticking the original wood and driving its motor tail base and support tail base, sliding base between them and being able to move along the vertical track, horizontal milling and cutting device for the original wood with vertical milling device installed on the horizontal milling base. The woodworking machine is not only able to process original wood with high efficiency, but also be able to vertical concave slot, horizontal concave slot and vertical sawing seam processing on the wood. It is multifunctional, with convenience for wood transportation, usage and storage.

The invention relates to a half-offline mixed stacking method and system as well as a robot. The method comprises the following steps of: obtaining parameter information of a tray and attribute information of boxes in a cache region, and coding all boxes in the cache region to generate an initial stacking sequence; obtaining serial number of the target box from the initial stacking sequence according to a pre-selecting rule, and stacking the target box on the tray; supplementing the boxes in the cache region, keeping number of the boxes in the cache region unchanged, updating a stacking sequence of the boxes in the supplemented cache region according to a set numbering rule to generate an updated stacking sequence and the serial number of the target box, and stacking the target box on thetray. The stacking method disclosed by the invention can solve the online mixed stacking problem of the logistics industry, can perform mixed stacking on rectangular boxes of different dimensions, canguarantee stacking stability, realizes horizontal and layered stacking, and has the advantages of being good in stacking stability, convenient for robot stacking, relatively high in tray utilizationrate and the like.

The invention provides a special-shaped spinneret plate and a method for producing square-section colored FDY through the special-shaped spinneret plate. Spinneret holes in the spinneret plate are in an approximate rhombus shape of circular arc vertex angles and inward concave arc edges. Each edge of the rhombus is in an inward concave circular arc shape. Each angle is in an outward convex circular arc shape. The spinneret holes are distributed on the plane of the spinneret plate in the shape of concentric circles in a layered mode. Each layer of spinneret holes are distributed on the spinneret plate in a regular rhombus radial diagonal mode. The spinneret hole layers are arranged in a staggered mode. Sections of filament fibers spun by the spinneret plate are tightly stacked, the fibers are not likely to roll between yarn and fabric, the arrangement stacking density of the filament fibers in the fabric can be improved, and the strength, wind-proof performance and water-proof performance of the fabric can be improved.

The invention relates to a storage tool, in particular to a folding type storage box, aiming to solve the problems of the traditional folding type storage box that the height of side walls is smaller than the width of a bottom plate, and the accommodating space is small. The storage box comprises a top plate and a bottom plate which are parallel to each other, wherein the top plate and the top box are squares with the same side length, and uprights are arranged between opposite vertexes of the top plate and the bottom plate; a framework defined by the top plate, the bottom plate and the uprights is provided with a canvas cover, and a storage space is formed in the canvas cover; the midpoint of each upright is provided with a bending joint; the uprights are hinged with the top plate and the bottom plate; hinging shafts of adjacent uprights are mutually vertical; and the hinging shaft of each upright is parallel to a joint bending axis. In the invention, the height of the storage box after the storage box is unfolded can reach two times as long as the length of the short side of the bottom plate, thus the storage space is large; the folding directions of all the upright posts are vertical to each other, thus the storage box is more stably supported and not easy to sideward incline; and the storage box has the advantages of simple folding mode, is in suitcase shape after being folded and is convenient for conveying.

The invention relates to the technical field of a production process of a hot melt adhesive, and in particular relates to a production process for laminating a hot melt adhesive with TPU (thermoplastic urethane). The production process comprises the following modes of: if a double-layer co-extruder is selected for extruding the hot melt adhesive and the TPU at the same time, laminating to form a membrane after the hot melt adhesive is adhered to the TPU, then forming and coiling; if a single extruder is selected for sequentially extruding the hot melt adhesive and the TPU, producing a single-sided misty or transparent hot melt adhesive product by adopting the mode of directly pressing an embossing roller by a rubber roll, then laminating the single-sided misty or transparent hot melt adhesive with the TPU to form a membrane, then forming and coiling; and if a single extruder is selected for sequentially extruding the TPU and the hot melt adhesive, producing a TPU product by adopting the mode of directly pressing an embossing roller by a rubber roll, then laminating the TPU with the hot melt adhesive to form a membrane, then forming and coiling. The membrane produced by the production process has the advantages of better flatness, less possibility of curliness, uniform surface lamination tension and no bubbles and wrinkles, thus the obtained product is more flat and beautiful.

The invention relates to method for producing a square cross section polyamide fiber yarn used for an uncoated air bag fabric, which is characterized by comprising the following steps: heating and melting a polyamide raw material, extruding out the raw material through a square like spinneret, and then cooling, curing and extending the raw material to obtain a polyamide fiber extension yarn with a square cross section shape. The invention also relates to an uncoated air bag fabric which is prepared by the method, and is characterized in that the fabric is provided with the square cross section polyamide fiber yarn and low air permeability, and the fire resistance and environment aging resistance of the fabric can be improved. The invention also relates to application of the uncoated air bag fabric with low air permeability prepared by the method.

Relating to the technical field of release films, the invention discloses a PET embossed release film for rubber isolation. The PET embossed release film comprises two PE layers and a plurality of PET layers, one PE layer is laminated on the upper surface of a topmost PET layer, and the other PE layer is laminated on the lower surface of a lowest PET layer, the upper surface of the upper PE layer and the lower surface of the lower PE layer are provided with embossed patterns, the thickness of each PE layer is less than 0.038+ / -0.008mm, the thickness of each PET layer can be determined according to the total thickness of a client. By adopting the structure with the PE lamination layers arranged on the PET, the release film has increased impact strength, is difficult to tear, and has small thermal shrinkage deformation rate, thus being reusable. And the PE laminated film has good corrosion resistance, by disposing the embossed patterns on the PE laminated films, the release film surface and a rubber surface can maintain good ventilation and the release film is easily peelable.

The invention discloses a counter-rotating shaftless rim-driven propeller. The propeller is provided with a conduit assembly, and a stator winding, a front rotor assembly, and a rear rotor assembly are installed in the inner chamber of the casing; the rotor in the two rotor assemblies is The ring forms a conical matching pair in the axial direction, and the permanent magnets embedded in the outer walls of the two rotor rings have opposite polarities; after the stator winding is energized, it forms a magnetically opposite magnetic field with the permanent magnets at the same time, that is, the single stator drives the double rotors to rotate, forming The double-rotor ring motor drives the front blade and the rear blade to rotate in opposite directions, generating thrust to propel the ship forward. The invention has the advantages of small space occupation, high propulsion efficiency, large thrust, good lateral stability, small vibration, etc., and is especially suitable for propulsion of military ships and modern civil ships and positioning of offshore platforms.

The invention discloses a low-density high-strength self-insulation ceramsite hollow block and a production method thereof. The block comprises the following materials by weight: 1 part of cement, 0.5-1.5 parts of ceramsite, 0.3-1.0 part of slag, 0.3-1.0 part of mountain flour, 0.25-0.5 part of sand, 0.05-0.3 part of a modifier and 0.3-0.68 part of water, wherein the modifier is polyvinyl acetate or ethylene-vinyl acetate; the ceramsite is in a level of 400-500 and has the particle size distribution of 5-12 mm. The block has the void ratio of 40%-45%, the volume weight of 800+ / -50 kg / m<3>, the compressive strength not less than 3.5 Mpa and the thermal resistance value R not less than 0.66 m<2>*k / w. The production method comprises the following steps: uniformly stirring a modifier water solution and other materials, conveying a mixture into a forming machine for compression forming, conveying the block subjected to compression forming into a steam kiln for steam curing, and discharging from the kiln.

The invention relates to placing boxes, in particular to a household lighting bulb placing box. The household lighting bulb placing box comprises a box body and the like and is characterized in that a cover plate is rotatably connected to the top of the box body, a partition is arranged at the center of the front side of the box body, a lower placing device is arranged between the bottom of the partition and the inner bottom of the box body, third separation plates are evenly arranged on the partition and between the left wall and the right wall in the box body, and fourth separation plates are evenly arranged on the partition and between the front wall and the rear wall in the box body. The household lighting bulb placing box has the advantages that the box is convenient in bulb placing and less prone to damage, the separation plates made of sponges are arranged in the box body to evenly separate the box body into multiple small spaces, and spare bulbs placed in the small spaces can be fixed in the small spaces and are less prone to rolling.

The invention relates to the technical field of manipulators, in particular to a clamping manipulator for automobile part production and machining. The clamping manipulator comprises a clamping mechanism, a fixing mechanism is mounted in the clamping mechanism, two symmetrical brake mechanisms are mounted in the clamping mechanism, limiting mechanisms are mounted in the brake mechanisms in a cooperation manner, multiple supporting mechanisms are mounted on the clamping mechanism, and telescopic mechanisms are mounted in the supporting mechanisms correspondingly. Automobile parts can be conveniently taken and machined in different areas under the action of the clamping mechanism, a clamp can be conveniently and rapidly replaced under the action of the fixing mechanism, the clamping mechanism can be conveniently moved and controlled under the action of the limiting mechanisms and the brake mechanisms, use in different areas is convenient, under the action of the supporting mechanisms, a warning belt is convenient to mount, and the effect of protecting and warning near the clamping mechanism is achieved.

A cable reel tray comprises a panel tray, a support, a first positioning plate, a second positioning plate, a first chain driving mechanism, a second chain driving mechanism, a third chain driving mechanism, a first wedge-shaped cushion block, a second wedge-shaped cushion block, a third wedge-shaped cushion block, a fourth wedge-shaped cushion block and locking devices. The panel tray is horizontally fixed to the support. The first positioning plate and the second positioning plate are located on the two opposite sides of the panel tray respectively and on the same horizontal plane with the panel tray. The four wedge-shaped cushion blocks are arranged on and clamped to the first positioning plate and the second positioning plate through the locking devices. By means of the cable reel tray, cable reels can be conveniently stored, people can conveniently use a forklift to carry the cable reel tray fixedly from the bottom of the tray, and the situation that cables are damaged as cable reels are carried directly through the forklift is avoided.

The invention provides an assembled water-permeable energy-dissipation tetrahedral dike plugging member and a construction method thereof. The assembled water-permeable energy-dissipation tetrahedral dike plugging member comprises four water-permeable energy-dissipation panels and a plurality of flexible fasteners, the water-permeable energy-dissipation panels are prefabricated panels, the shape of each water-permeable energy-dissipation panel is an equilateral triangle, and a plurality of holes are densely formed in the water-permeable energy-dissipation panels; and three edges of one water-permeable energy-dissipation panel are correspondingly aligned with one edge of the other three water-permeable energy-dissipation panels, adjacent edges of the other three water-permeable energy dissipation panels are aligned, the adjacent edges of two adjacent water-permeable energy-dissipation panels are locked after the multiple flexible fasteners penetrate through holes reserved near the adjacent edges, and the four water-permeable energy dissipation panels can be assembled into the dike plugging member with the regular tetrahedron structure. The assembled water-permeable energy-dissipation tetrahedral dike plugging member is a quick assembly member, on the basis of high anti-impact stability of a regular tetrahedron, through optimized arrangement of the water-permeable energy-dissipation holes, the water cross section can be reduced, the water flow energy can further be consumed, so that the water flow impact force is obviously reduced, the plugging throwing loss rate is obviously reduced, and the plugging emergency rescue efficiency is improved.

The invention belongs to the technical field of measuring tools, and particularly discloses a tightness detection platform for machine parts. The tightness detection platform for the machine parts comprises a support, walking wheels, a levelling module, a measuring platform and a fixed module; and the support is provided with at least three supporting legs, and the lower end of each of the supporting legs is provided with one walking wheel. The levelling module is connected to the upper portion of the support in a fit mode, and the levelling module comprises a supporting plate, an elastic airbag, a spring, a connecting rod, a cardan joint and a heavy punch. The measuring platform is fixedly connected to the upper end of the levelling module, and the levelling module makes use of gravity to realize the automatic level of the measuring platform. The fixed module is fixedly connected to the middle portion of the support, a wedge-shaped bolt arranged on the fixed module is screwed to realize a clamping block to open to the periphery, a thread gap between a fastening bolt and a fixed plate is reduced, the resistance is improved, and the fastening bolt is prevented from loosing. The tightness detection platform for the machine parts can effectively prevent the detection platform form loosing through fastening of the fixed module.

The invention relates to the technical field of round tube production equipment, and provides a round tube output device. The round tube output device comprises a frame, multiple rollers are arranged on the frame transversely, in other words, the axes of the rollers are perpendicular to the tube operation direction. The round tube output device is characterized in that the rollers are divided into three groups which respectively comprise the left rollers, the middle rollers and the right rollers, the left rollers and the right rollers are obliquely arranged, and the middle rollers are horizontally arranged; each left roller, the corresponding middle roller and the corresponding right roller form an upward opened state; the middle of each roller is thin, the two ends of each roller are thick, and the side face of each roller is in an arc shape; the left rollers and the right rollers are mounted on the frame in a slidable mode. The round tube output device has the advantages that product positioning performance is high, products are not prone to rolling, influences on production are reduced, product quality improvement is facilitated, and output of different types of round tubes can be realized.

The invention discloses a nursing tray which is integrally divided into three areas through separation plates. The nursing tray comprises a medical equipment tray body, a medicine tray, a waste recycle tray, a handle and a tray cover, the medical equipment tray is located on the lower half part of the tray, the medicine tray is located on the right quarter part of the upper half of the tray, and the waste recycle tray is located on the left quarter part of the upper half of the tray. The medical equipment tray further comprises an absorbent cotton trough, a thermometer trough, a disinfectant trough, an adhesive tape trough and a general trough. The medicine tray further comprises a large medicine bottle trough, a middle medicine bottle trough and a small medicine bottle trough. The waste recovery tray further comprises a waste cover, a hinge and a protruding head. The nursing tray is reasonable in design, simple in structure and convenient to use, nursing materials can be contained in a classified mode and are not prone to sliding or rolling, the nursing tray has an anti-skidding function, the tray cover and the waste recycle tray can avoid cross infection, the working difficulty of medical staff is lowered, and the work load is reduced.

The invention provides a speed reducer structure, which belongs to the technical field of machinery, and solves the problems that an existing speed reducer is poor in transmission precision and is short in service life. The speed reducer structure comprises a housing, a flange, an input shaft, a transmission shaft and an output shaft, wherein the two ends of the transmission shaft are separately connected in the housing through a bearing I and a bearing II; the two ends of the output shaft are separately connected in the housing through a bearing III and a bearing IV; a coaming is arranged inthe housing, and a mounting cavity is enclosed in the housing; an opening is formed in the end surface of the housing, and the edge of the opening is detachably connected with an end cover; both the bearing I and the bearing III are arranged on the end cover; both the transmission shaft and the output shaft are positioned in the mounting cavity; a hypoid gear is arranged on the input shaft; a bevel gear which is engaged with the hypoid gear is arranged on the transmission shaft; and the dimension of the bearing II is greater than that of the bearing I. The bearing II can bear greater axial bearing force relative to the bearing I, so that stable and consistent transmission efficiency can be kept, and therefore, the speed reducer structure has relatively high transmission precision, and theservice life of the speed reducer structure is prolonged.

The invention discloses a special-shaped communication cable protective pipe and belongs to the technical field of wire conduits. The protective pipe comprises an inner pipeline, an outer pipeline and supporting ribs. The outer pipeline is composed of eight outer pipe ribs, and the eight outer pipe ribs form an octagon. The middles of the outer pipe ribs are connected with the inner pipeline. The two ends of each outer pipe rib are connected with the corresponding supporting ribs. The supporting ribs are arranged in the radial direction, and the inner sides of the supporting ribs are connected with the inner pipeline. The inner pipeline and outer pipeline double-layer structure is adopted for the special-shaped communication cable protective pipe, the supporting ribs are arranged in the radial direction between the inner pipeline and the outer pipeline, and in this way, the protective pipe improves compressive strength and bending-resistive performance, and is firm, durable and good in impact-resistive performance. The supporting ribs are arranged between the inner pipeline and the outer pipeline, and gaps are formed in the two sides of each supporting rib. Because air is a hot poor conductor, inside and outside temperature transfer can be well isolated through the special-shaped communication cable protective pipe, a cable is prevented from being affected by outside temperature fluctuations, signal transmission is better facilitated, and meanwhile the service life of the cable is prolonged.

The invention discloses graded pearl screening equipment and a using method thereof, and belongs to the field of valve corrosion prevention. The graded pearl screening equipment comprises an operationconsole; the upper portion of the operation console is provided with a vibration feeder, the upper end of the operation console is provided with a grading groove, and the left side wall of the operation console is provided with a round channel; the inner bottom surface of the grading groove is provided with a plurality of uniformly-distributed discharging groves, and the opening diameter of uppergroove openings of the multiple discharging grooves is gradually increased in the direction away from the round channel; the interior of the operation console is provided with a collecting cavity, and the collecting cavity is located on the lower sides of the discharging grooves and communicates with the discharging grooves; the interior of the grading groove is provided with a grading transmission mechanism; and the grading transmission mechanism comprises a driving wheel and a driven wheel, and the driven wheel is located on the left side of the driving wheel. According to the graded pearlscreening equipment and the using method thereof, it can be achieved that one-time multiple-grade screening can be conducted on pearls, the pearls different in size are subjected to multi-grade fine classification in one step, and automatic screening equipment high in efficiency and low in cost is provided for the pearl screening process.

The invention belongs to the field of optical cables and particularly relates to a triangular optical cable. The cable comprises a sheath, a reinforcer wrapping layer and a core wire which are sequentially arranged from outside to inside, the sheath is a triangular special-shaped sheath, a cavity is formed in the sheath, the upper end of the cavity faces the tip end of the top of the sheath, and the lower end of the cavity faces the side edge opposite to the tip end; the reinforcing part cladding is composed of supporting ribs and an annular cladding, the annular cladding is arranged at the lower end of the cavity and abuts against the inner wall of the lower end of the cavity, an opening is formed in the annular cladding in the direction facing the upper end of the cavity, and the two ends of the opening extend towards the upper end of the cavity to form the supporting ribs. The two formed supporting ribs extend to the upper end of the cavity and abut against the inner wall of the upper end of the cavity. The core wire comprises a plurality of optical fibers fixed by a belting layer, and each optical fiber is an optical fiber bundle formed by a single optical fiber or a plurality of optical fibers; and the belting layer is used for accommodating and fixing the optical fiber. Through the special structural design, the vertical impact resistance of the optical cable is remarkably improved.

An ink-jet printing system for cylinders comprises an ink-jet printing device and an automatic feeding and discharging device; the ink-jet printing device comprises a supporting platform, a door-shaped beam, an X-axis driving mechanism, an ink-jet printing trolley, a Y-axis driving mechanism and a rolling conveying mechanism; the automatic feeding and discharging device comprises a rack, a tray frame, a grabbing assembly, a reciprocating driving structure, a pushing frame, a translation driving structure, a feeding supporting plate assembly and a discharging supporting plate assembly. The ink-jet printing system has the predictable technical effects that the X-axis driving mechanism and the Y-axis driving mechanism are linked to enable the ink-jet printing trolley to circularly move to the positions above rolling conveying mechanisms to print cylindrical to-be-printed products, and the printing efficiency of the cylindrical products is improved; through an adsorption mode, cylindrical materials can be grabbed and conveyed in batches, the process is automatic, the cylindrical materials flow rapidly and are not prone to rolling, the feeding time and the discharging time are short, and the working efficiency is high.

The invention relates to the field of planting, and particularly discloses a corn threshing device. The corn threshing device comprises a rack, a threshing mechanism and a moving mechanism, wherein the threshing mechanism comprises a rotary cylinder, a slotting knife, a threaded piece and a threshing piece, and protruding ribs are arranged on the threshing piece; the moving mechanism and the slotting knife are located on the same side of the rotary cylinder. The moving mechanism comprises a propelling assembly, a threaded rod and an air bag, wherein the threaded rod is coaxial with the rotarycylinder, balls are arranged between the threaded piece and the threaded rod, an air outlet capable of being closed is formed in the air bag, and a plurality of cutting knives are fixed to the periphery of the air bag. The rack is fixedly provided with an air-filled cylinder, a piston rod is fixed to a piston of the air-filled cylinder, a spring is arranged in a rodless cavity of the air-filled cylinder, poke pieces are fixed to the outer wall of the rotary cylinder, the side wall of the rodless cavity of the air-filled cylinder is fixedly provided with an air-inlet one-way valve and an air-filled one-way valve, and the air-filled one-way valve is communicated with the air bag. The threshing device can dispose corn cobs.

The invention relates to an on-line production line for producing water absorption core bodies of sanitation supplies, which comprises a feeding mechanism of water absorption materials, a glue spraying device, a coating conveying mechanism, a transfer wheel device and a conveying device. The transfer wheel device comprises a motor, a suction fan, a left transfer wheel and a right transfer wheel, and the motor is connected with the left transfer wheel and the right transfer wheel synchronously in a transmission mode and with the opposite rotating direction. According to the production line forproducing the water absorption core bodies, through the synchronous and opposite-direction rotation of the left transfer wheel and the right transfer wheel, the arc surfaces of the left transfer wheeland the right transfer wheel stretch the surface of non-woven fabric, thus small holes on the surface of the non-woven fabric expand to a certain extent, the water absorption materials are easy to beembedded in the non-woven fabric, and the mixing effect of the water absorption materials and the non-woven fabric is good; rotation speeds of the left transfer wheel and the right transfer wheel arethe same, and stretch degrees of the non-woven fabric on the left transfer wheel and the right transfer wheel are the same, the non-woven fabric is applied with water absorbent materials on both sides through the left transfer wheel and the right transfer wheel at one time, the structure design is reasonable, and the production efficiency is high.

The invention relates to a process for making a knitted hat. The making process comprises the following specific steps: (1) waxing, namely winding and waxing single yarns for 2-3 times, so that the yarns can be uniformly coated with the wax; (2) twisting, namely doubling and reversely twisting the waxed 2-4 strands of single yarns, and forming yarns with the twist of 110-120; (3) knitting, namely knitting by using a computer knitting machine of 12-14 needles, and reasonably performing jacquard weaving according to color selection after weaving; (4) sewing, namely sewing hat pieces by adopting polyester threads, and fixing the crown according to the requirements; (5) after-finishing, namely covering the sewed hat by a setting plate, pressing at the temperature of 90-120 DEG C, sucking steam to dry and setting the hat. The process disclosed by the invention has the advantages that according to the making process disclosed by the invention, the made knitted hat has the advantages of lightness and thinness, breathability and the like on the basis of heat insulation.

The invention discloses a railway steel rail drilling machine. The railway steel rail drilling machine structurally comprises a drill, a sliding strip, a gear strip, a handle, an operation panel and amounting rack. The mounting rack is composed of a machine body, a propelling hand wheel rod, a transmission gear, a positioning mechanism, a clamping mechanism and a guiding mechanism. The mounting rack is arranged on the surface of a steel rail through the clamping mechanism, so that the drill does not shake in the drilling process. Besides, the mounting rack can be positioned on the steel railthrough the positioning mechanism, so that the precision of the drill in the drilling process is improved. Through the mutual cooperation of first pulleys, second pulleys and third pulleys, constructors do not need to carry and move the drill for drilling of a next hole, so that the labor force of the constructors is saved, and the working efficiency of the constructors is improved. The mounting rack prevents the drill from deviating and derailing during drilling through the guiding mechanism, and drilling positions are rapidly and accurately determined through hole pointing heads on telescopic positioning rods.

The invention relates to the technical field of welding, and discloses a flux-cored wire for surfacing repair. The flux-cored wire comprises a flux-cored wire main body, wherein the flux-cored wire main body comprises a metal layer wrapping a flux core; the flux core comprises the following components in percentage by weight: 0.1 to 5 percent of C, 0.8 to 3 percent of Mn, 0.5 to 2 percent of Si, 3 to 25 percent of Cr, 1 to 4 percent of Mo, 1 to 10 percent of W and the balance of Fe. According to the flux-cored wire, Mo is added into a conventional flux core formula, so that the performance of high temperature resistance and abrasion resistance of a welding material is achieved, the strength of a welding seam is ensured, and a welding layer is favorably prevented from being stripped in large scale; by Mo in steel, the hardenability and the thermal strength can be improved, the temper brittleness is prevented, and the residual magnetism and the coercive force are improved; silicon does not form carbide, so that a powerful function of promoting the graphitization of carbon is realized.

The invention discloses a prolate glass sealed surface mounting diode comprising a glass body and cylindrical electrodes at both ends of the glass body, wherein the glass body is a rectangular cylinder, and the diameter size of each electrode is between the length and the width of the rectangular cross section of the glass body. A packaging tape used by matching with the prolate glass sealed surface mounting diode comprises a tape body and a plurality of containing parts, wherein the containing parts are distributed on the tape body and are used for containing the diode, each containing part is provided with an inner cavity in the shape of the rectangular cylinder, and the width of the cross section of the inner cavity is greater than the diameter of the diode electrode and smaller than the length of the cross section of the glass body of the diode. The diode can not roll in the containing parts of the packaging tape, and can not easily roll or slide on a flat plate, thereby reducing the problems of poor cross connection and the like caused by deviation generated when the diode is mounted on a circuit board.

The invention relates to the field of corrugated pipes, in particular to a double-wall corrugated pipe. The double-wall corrugated pipe comprises a pipe body, pipe casings, a first sleeve, a first connection plate, a second sleeve and a second connection plate, wherein the pipe body is formed by an inner pipe and an outer pipe. Two sleeves which can be butted against each other are arranged at twoends of a traditional corrugated pipe separately, so that splicing is achieved by using two connection plates; and meanwhile, the two sleeves have airtightness and disassembly and assembly performance, so that the double-wall corrugated pipe is convenient to disassemble and assemble and convenient to replace, maintain and clean, the condition that the corrugated pipe is more durable is ensured and the operation performance is improved. The condition that the transverse plane of the whole corrugated pipe has higher compression resistance is ensured and the damage from corrosive liquid infection can be prevented through arranging a compressive layer between an outer pipe and an inner pipe and arranging an anti-corrosion layer on an outer wall of the outer pipe; meanwhile, the condition thatheat energy, produced by penetrating components, to an optical fiber can be removed as soon as possible is ensured through arranging a spiral cooling pipe with a refrigerant inside the pipe, therebyreducing the effect of high temperature on the optical fiber; and furthermore, the pipe casings which are set in a rectangular form are convenient to stack and not easy to roll.