184results about How to "Increase manufacturing difficulty" patented technology

The invention discloses a colored dynamic three-dimensional moire image thin film based on micro printing and a preparation method of the colored dynamic three-dimensional moire image thin film. The moire image thin film comprises a transparent base material layer, a micro-lens array layer located on one side of the transparent base material layer, and a micro-pattern array layer located on the other side of the transparent base material layer. The micro-lens array layer comprises a plurality of micro-lenses arranged in an array. The micro-pattern array layer comprises a plurality of micro-patterns which are arranged in an array and are different in color. The array arrangement of the micro-lenses is matched with the array arrangement of the micro-patterns. The moire image formed by the moire image thin film is characterized by being colored, dynamic and three-dimensional, and an observer can directly observe a colored three-dimensional dynamic pattern without any special observation skills under any luminous environment.

The invention discloses a digital display type oil-water interface detector which comprises a detector body, a measuring scale, a probe, a microprocessor, an LCD, a magnetic steel body and a rotation angle sensor. The detector body comprises a shell and a rotary disk. The measuring scale is formed by combining a flexible rule tape with scales and a guide wire. The probe is connected with the guide wire arranged in the measuring scale and extending out of the detector body. A flexible rule tape disk is arranged in the detector body. A medium sensor is arranged in the probe. The microprocessor is arranged in the rotary disk. The LCD is arranged on the front end face of the rotary disk. An output end of the microprocessor is connected with the LCD. The other end of the measuring scale in the detector body is connected with the microprocessor through the guide wire. The magnetic steel body is fixedly connected to the center of the shell. The rotation angle sensor is fixedly connected to the center of the flexible rule tape disk, and the rotation angle sensor corresponds to the magnetic steel body in radial position. The rotation angle sensor is connected with the microprocessor through the guide wire. The digital display type oil-water interface detector can obviously reduce influences of manual factors and carry out oil-water interface detection easily and accurately.

The invention relates to a low-cost high-compression-strength wrought magnesium alloy and a preparation method thereof. The magnesium alloy material is composed of six elements, namely Mg, Zn, Mn, Sn,Ca and Cu, wherein the content of the Zn element is 4.0%-8.5%, the content of the Mn element is 0.1%-0.4%, the content of the Sn element is 0.1%-0.4%, the content of the Ca element is 0.1%-0.4%, thecontent of the Cu element is 0.1%-0.4%, the content of inevitable impurities is less than or equal to 0.15%, and the balance is the Mg; and compared with a traditional commercial grade magnesium alloymaterial, high compressive yield strength can be obtained after the magnesium alloy material is subjected to a conventional extrusion treatment, and the compressive yield strength of the alloy is obviously higher than tensile yield strength. The magnesium alloy material does not contain precious alloy elements, and is simple in preparation process and low in cost, has very important practical value for manufacturing a pressed magnesium alloy component.

The invention discloses a tension sensor, a moment limiter and a crane. The tension sensor comprises a barrel, a sealing partition plate, a connecting section, a hydraulic detection device and a computation device, wherein the sealing partition plate is arranged on the connecting section and partitions the barrel into a first chamber and a second chamber; the first chamber or the second chamber is filled with hydraulic oil; the hydraulic detection device is used for detecting the intensity of pressure of the hydraulic oil; the computation device calculates the tension according to the intensity of pressure, and the stress area of the first chamber or the second chamber. Based on the novel working principle, a novel tension sensor is provided, the traditional sensor can be replaced, and the tension sensor has the advantages of being simple to produce and manufacture, low in cost, small in measurement error and the like, and is especially applicable to measurement of large load.

The invention discloses a new preparing method of allyl alcohol random polyether glycidyl ether. The preparing method comprises the steps of adding an allyl alcohol random polyether raw material in a jet loop reactor based on a venturi effect through a feed inlet of materials, conducting deoxygenization and pumping into inert gases to be subjected to replacement protection, and opening an external circulating pump to be subjected to high speed spraying mixture; controlling the temperature at 30-120 DEG C, slowly adding an epoxy chloropropane raw material and an alkali raw material into the jet loop reactor through the feed inlet of epoxy chloropropane and the feed inlet of the material respectively, and the like. Due to the fact that the system belongs to a system of kinetic control, and a side reaction is inhibited sufficiently, thus the selectivity of a reaction system is higher. The new preparing method is especially applicable to allyl alcohol random polyether of which molecular tail end is secondary hydroxyl, the color luster of the finally obtained product, namely, the allyl alcohol random polyether glycidyl ether product, is less than 40, and the stop end rate of the product is more than 96%.

One involves a gas delayed recoil method. This method is applied to: 1. Weapons with any caliber, chamber pressure and muzzle velocity can be launched with low recoil or recoilless. 2. Gas turbine engines, ramjet engines and rocket engines. As a combustion chamber subsystem, the working medium is changed from a constant pressure combustion mode to a constant volume combustion mode with higher thermal cycle efficiency. A piston is assembled in the barrel of the weapon (that is, the gun barrel or gun barrel). When the gunpowder gas in the barrel burns and expands to do work and launch the projectile, the piston is simultaneously pushed to move along the axis; when the "bore pressure-time curve" of the barrel Certainly, the special structural design of the piston allows the piston to move to the position of the exhaust hole opened on the barrel at the moment when the projectile exits the chamber, so that part of the gunpowder gas is ejected forward with the projectile and part of it is released. The gunpowder gas is ejected backward through this exhaust hole to form a recoil force to counteract the recoil momentum of the barrel.

The invention discloses a method for preparing nitrogen oxide phosphor powder. Salt and nitride of a metal component in the nitrogen oxide phosphor powder to be prepared are taken as raw materials, and the method comprises the following steps of: weighing the raw materials according to the stoichiometric proportion of the phosphor powder to be prepared, and dissolving the raw materials in water to prepare first suspension; adding a dispersant polyethylene glycol into the first suspension, fully dispersing the dispersant to prepare second suspension, and controlling the volume ratio of the dispersant to the first suspension to be 5-8:100; dropping ammonia water into the second suspension to make the pH value of the second suspension be 5-6; ultrasonically oscillating the second suspension in ultrasonic waves to prepare uniform and stable third suspension; putting the third suspension into a heating furnace, and performing thermal treatment at the temperature of between 500 and 600 DEG C for 2 to 3 hours to prepare precursor powder; and putting the precursor powder into a crucible, and calcining in the reducing atmosphere at the temperature of between 1,300 and 1,400 DEG C for 4.5 to 7 hours to prepare the required phosphor powder.

The invention provides a C5 petroleum resin hydrogenation method. The method includes: dissolving C5 petroleum resin into an organic solvent in a mixer, preheating, adding into a fixed bed hydrogenation reactor filled with a nickel-molybdenum hydrogenation catalyst, sending hydrogenated materials into a steam stripping tower, recycling the organic solvent extracted from the upper portion after refining the organic solvent through a distillation column, and obtaining C5 petroleum resin at the bottom of the steam stripping tower. By adoption of the catalyst prepared from a nickel-containing carrier in a specific crystal form, reactive metal utilization rate can be greatly improved, and catalyst preparation difficulty is lowered; in addition, due to adding of a selected active component, a synergistic effect is achieved, and C5 petroleum resin low in bromine number and high in chromaticity and stability can be obtained.

The invention discloses a frequency conversion generator set. The frequency conversion generator set comprises a multipolar generator, an output terminal, an engine connected with an input terminal ofthe multipolar generator, the input terminal and an AA-type frequency converter connected with the output terminal of the multipolar generator; and the frequency conversion generator set is characterized in that a speed increaser is arranged between the output terminal of the engine and the input terminal of the multipolar generator. With the speed increaser arranged on the output terminal of theengine, the frequency conversion generator set increases speed of the engine, increases frequency of the generator so as to further reduce degree of wave distortion of voltage output by the AA-type frequency converter and allow the AA-type frequency converter to be effectively used in the frequency conversion generator set, thus improving efficiency of the generator and reducing weight and size of the generator set. Meanwhile, cost for improvement of the frequency conversion generator set is also reduced due to very simple and convenient improvement process.

The invention relates to a composite steel tube used for an oil and gas conveying pipeline and externally wound by a glass fiber resin reinforcing protective layer. A traditional pipeline steel tube is taken as a base tube, high-strength glass fibers infiltrated with resin are wound around the outer surface of the pipeline steel base tube and serve as the high-strength glass fiber reinforcing resin layer, and therefore the brand new composite tube is formed, wherein the inner layer of the composite tube is pipeline steel, and the outer layer of the composite tube is glass-reinforced plastic. The composite tube has the performance characteristics of the pipeline steel tube and a glass reinforced plastic tube, the pressure bearing capacity and the crack arrest capacity of the pipeline are improved, the defect that a high-strength pipeline is poor in tenacity is overcome, 3PE outer corrosion prevention of a traditional pipeline is replaced, the corrosion-resistant and ageing-resistant capacity of the pipeline are improved, and in comparison with a 100% pipeline steel tube with the same pressure bearing capacity, the manufacturing cost of the composite steel tube is reduced by about 20%. The composite steel tube can be used and popularized in construction projects of long-distance petroleum and gas conveying pipelines.

The invention discloses a hard coin with edge part having geometric figure, characterized by side part of coin podium without said geometric figure, said figure height is same with coin thickness or thinner then thereto thickness; said coin is in the shape of circular, polygon or any there of; said geometric figure comprising shape of arc, ladder-shaped, triangular, hackle-shaped or mixture of them.

A method for manufacturing an inert coating layer on the surface of a ceramic core is characterized in that the surface of the silicon-based ceramic core is coated with the inert layer to avoid directcontact and a thermochemical reaction of the core and a high-temperature alloy, so the reaction problem of the core and the alloy is solved. A silicon-based ceramic core having an excellent thermochemical stability at a high temperature and easily removed is produced. The method for manufacturing the inert coating layer on the surface of the ceramic core is suitable for the production of heavy-duty gas turbine blades easily reacted with the core, and is also suitable for the production of aeroengine guide vanes; and the produced core has large expected economic and social values, and has a broad application prospect.

The invention relates to battery cell manufacturing equipment and a method thereof. The battery cell manufacturing equipment is used for manufacturing a battery cell, the battery cell comprises a first pole piece, a second pole piece and a diaphragm, the battery cell is provided with a winding starting section located on the inner side, and the battery cell manufacturing equipment comprises a winding needle configured to wind the first pole piece, the second pole piece and the diaphragm to form the battery cell; and the discharging assembly is configured to take down the battery cell from thewinding needle, the discharging assembly comprises an inner side heating needle, and the inner side heating needle is configured to abut against and heat the winding starting section, so at least oneof the first pole piece and the second pole piece of the winding starting section is thermally compounded with the diaphragm. The battery cell manufacturing equipment provided by the invention aims tosolve a problem of lithium precipitation in the inner ring part of the battery cell.

The invention relates to the field of medical treatment, and in particular relates to a keratoprosthesi. The keratoprosthesis comprises a frame and a cylindrical lens, wherein the frame is of a shape of a smaller part of a spherical surface which is cut off by a reference surface, and the center of the frame is provided with a central hole; the inner wall of the central hole is provided with internal threads; the frame comprises a main body and a metal net which is embedded in the main body; the extension direction of the metal net is consistent with the extension direction of the main body; and the outer wall of the cylindrical lens is provided with external threads which are matched with the internal threads. Compared with the prior art, according to the keratoprosthesi, the frame is designed in the way of comprising two parts of the main body and the metal net which is embedded in the main body, and because the human eye tissue and medical resin have higher compatibility, the human eye tissue can grow together with the main body, and cannot slowly push the main body to move towards the outside; but the medical resin material is crisper and lower structural strength, the structural strength of the frame can be improved through embedding the metal net into the frame, so the frame is not easy to be damaged.

The invention discloses a transmission mechanism for a permanent magnetic gear. The transmission mechanism comprises a stator assembly, an adjustable magnetic ring assembly, a rotor assembly and an enclosure assembly. The transmission mechanism is only provided with a layer of permanent magnet, so that the processing and assembling difficulty is smaller while a permanent magnet is saved. The permanent magnet is fixed by a built-in hole in a rotor core, and the condition that the permanent magnet is thrown away due to a centrifugal force generated by the rotor core during high-speed rotation is avoided, so that the permanent magnet is safe and reliable. The transmission ratio of the transmission mechanism can be changed according to the requirement; the output rotating speed of the transmission mechanism can be set to be constant according to the requirement. A damping bar made of a conductor material is arranged on the rotor core and can be used for cutting a magnetic field generated by a stator winding and forming induced current; a lorentz force generated by the induced current can form damping, so that the rotating speed and the torque of the rotor after starting are rapidly converged and the rotor stably operates; heat generated by the stator assembly, the adjustable magnetic ring assembly and the rotor assembly can be taken away by air current of the transmission mechanism.

The invention discloses a HVDC grounding switch and a stationary contact component thereof. The grounding switch comprises a base, a moving contact and a stationary contact. The base is hinged with a folding grounding knife-switch which can swing up and down. The moving contact is fixedly arranged at the top of the grounding knife-switch. The stationary contact is located over the grounding knife-switch and is plugged with the moving contact in a matched manner to implement a switching-on when the grounding knife-switch swings upwardly and becomes straight. The grounding switch also comprises a tube bus clamp for suspending the stationary contact fixedly on the tube bus, a upper grading ring connected fixedly on the top of the tube bus clamp, and a lower grading ring connected fixedly on the bottom of the tube bus clamp, wherein the stationary contact is positioned in the line of centers of the upper and lower grading rings. Since the stationary contact is suspended fixedly on the tube bus directly by the tube bus clamp, a post insulator that supports the stationary contact can be omitted so as to reduce a cost and to prevent the manufacture difficulty of the insulator from being increased due to a higher requirement of the DC system on the insulator's creep distance.

The invention relates to fiber lasers, provides an active optical fiber structure for gaining an application and an achieving method thereof, so that a quite high coupling efficiency of fiber cores to covering pump lights can be achieved even though an internal covering is not needed to be designed into a polygon structure such as an octagon or a D-type. The structured is characterized by comprising a fiber core, a quartz covering, a low-refractive-index cladding and an external cladding which form a concentric circular layer structure from inside to outside, wherein the quartz covering can be formed either by only one layer of quartz covering with a graded refractive index or by a layer of internal quartz covering with a graded refractive index and a layer of external quartz covering, while the refractive indexes at any position of the internal quartz covering are all higher than the refractive index of the external quartz covering. According to the structure and the method, the problems of high welding loss, high bending loss, low strength and the like of the active optical fiber in the prior art are solved, the production process for the active optical fiber is simplified, and significance is provided for fiber lasers.

The invention relates to a display system based on flaming grating digital microscope that includes lighting component, imaging lens, and driving components. The feature is that the microscope is flaming grating digital microscope that each pixel is made up from three sub-pixels. Comparing to the traditional microscope, the display system could supply higher resolution and brighter color. It has not only high light use factor, but also conquers the disadvantage brought by field sequence lighting. It could be used not only large scale projection TV, but also suit for micro projection display. Especially, it could use sunlight as illuminated light sources.

The invention relates to a numerical control novel indexing worktable at a horizontal machining center, which comprises an upper saddle, a lower saddle and a worktable. The upper saddle is equipped with a lower gear disk and a piston is sleeved in the center of the upper saddle, and a support shaft is sleeved in the piston. The worktable is sleeved on the upper part of the support shaft and provided with an upper gear disk. The lower saddle is equipped with a nut seat and a screw nut is provided in the nut seat. The screw nut is sleeved at one end of a ball screw which is driven by a motor. A transmitting rod sleeved with a compression spring is connected to the bottom of the worktable. The transmitting rod is connected with a travel switch by a switch collision rod, and a gear is connected to the bottom of the support shaft. The lower saddle is fixed with racks which are mesh with the gear. The worktable has simple structure, cost less, and has the advantage that the parts used are not easy to be worn. Besides, the worktable can maintain better precision and has longer service life.

The invention provides a magneto-electro-thermo multi-parameter coupling microscope probe. The probe comprises a probe arm and a needle point body connected with the probe arm, the surface of the probe arm and the needle point body is outwardly covered by a metal thermal resistance layer, a heat conduction insulating layer and a magnetic conducting layer in sequence, the metal thermal resistance layer and an external circuit form a thermoelectric circuit, and the magnetic conducting layer, a sample and the external circuit form a conduction circuit. According to the probe, the structure is simple, the preparation difficulty is low, in-situ micro-area detection of magnetic signals, electric signals, and thermal signals of a magneto-electric function material can be conducted, and the signal interference between the thermoelectric circuit and the conduction circuit can be effectively avoided.

The invention relates to a novel measure for limiting a secondary arc current of an untransposed transmission line with extra-high voltage, belonging to the technical field of extra-high voltage. The invention aims to provide a novel measure for limiting the secondary arc current of the untransposed transmission line with extra-high voltage aiming to overcome deficiency of the background art so as to solve the problem that the secondary arc current of the untransposed transmission line with the extra-high voltage is high. And the novel measure has stronger practicality and economical efficiency.

The invention discloses a dust inhibitor based on the cultivation of Bacillus Pasteurella and a use method thereof, which comprises the following raw materials in weight percentage: 9.00% to 11.00% of Bacillus Pasteurella bacterial liquid (the bacterial concentration is 1.0×10 8 ~1.3×10 8 cell / mL), 4.20%~4.40% CO(NH 2 ) 2 , 7.90% ~ 8.05% CaCl 2 and the remainder of the water. The method of using the dust suppressant is: first put CaCl 2 and CO(NH 2 ) 2 Dissolve in water according to the above weight percentage, then add the corresponding percentage of Bacillus pasteurian bacteria solution, mix quickly and evenly, and then spray on the road surface and the surface of the stockpile; treat 1m 2 For municipal roads, the required dosage is 1~3L; treatment of 1m 2 For stockpile, the required dosage is 3-6L, and the number of spraying is 1-3 times according to the effect. The present invention utilizes the principles of bonding, covering, biodegradation and biocalcification to effectively improve the effect of dust suppression, and has the advantages of fast response, long duration of action, antifreeze and temperature resistance, reduction of secondary dust, and environmental protection.

The invention discloses a 1.5-level transonic axial-flow air compressor testing apparatus which comprises an air compressor, a high-speed membranous disc coupling, a gear box, a low-speed-end coupling, a motor and a common base plate. The motor is in transmission connection with the gear box by the low-speed-end coupling, the gear box is further in transmission connection with the air compressor by the high-speed membranous disc coupling, the air compressor is sequentially provided with an air inlet channel, a rotor, a through-flow portion and an air outlet channel along a flow direction of air, an openable circular hole is formed in the air outlet channel, and the rotor is provided with a lubricating system and is supported by a bearing system. The 1.5-level transonic axial-flow air compressor testing apparatus has the advantages that when the air compressor works, the air flows into the through-flow portion from the air inlet channel and is exhausted into the atmosphere via the air outlet channel; the high-speed membranous disc coupling is excellent in compensation ability, so that shafting requirements can be met; the rotor is supported by the bearing system and is lubricated and cooled by the lubricating system; a measuring system is reasonably arranged, so that test prototype parameters in transonic flow procedures can be acquired.

The invention discloses a hard alloy product, a preparation method thereof and a device for preparing the hard alloy product, and belongs to the field of powder metallurgy. The preparation method of the hard alloy product includes the steps that hard alloy powder and an adhesion agent are mixed and feedstock is prepared; the feedstock is stored in an extruding machine so that the feedstock can be extruded out from a nozzle of a numerical control machine tool which is connected with the extruding machine; and the numerical control machine tool controls the extruded feedstock to be layered-deposited, and the hard alloy product is prepared. The device for preparing the hard alloy product comprises the extruding machine and the numerical control machine tool; the numerical control machine tool comprises a heatable nozzle, the nozzle is the executive component of the numerical control machine tool, and connected with a driving component of the numerical control machine tool; and a material outlet of the extruding machine is connected with the nozzle through a material pipe. According to the hard alloy product, the preparation method thereof and the device for preparing the hard alloy product, a die does not need to be manufactured, complex shapes can be formed, the density of each part of the product is even, deformation is small, and the comprehensive property is high.

The present invention relates to a double forward clearance blanking method. The male die or female die of said die equipment can be made into continuous step form, and its is characterized by that the height h of the step is 1 / 3-1 / 2 of the thickness t of material to be blanked, between male die and female die the double forward clearances are formed, clearance C1=(0.125-0.20)t, and the clearance C2=(0.02-1.10)t. Under the condition of general blanking die, general blanking clearance and general pressing machine said invention can raise shearing surface height of blanking piece section in once blanking stroke.

The invention belongs to the technical field of electric power and electronics. A primary coil of the hybrid primary-side tap controllable balance converter is connected with two points: an output anode end A of a rectification module 1 and an output anode end B of a rectification module 2. 3, 4 to n tags can be disposed. Tap points lead an uncontrolled diode or the uncontrolled diode and a fully-controlled switch tube are connected in series to be connected to an anode end M point of a load, and a hybrid primary-side tap controllable circuit is formed. An output end of a secondary coil is connected with a single-phase full-bridge uncontrolled rectification circuit, an output anode end of the single-phase full-bridge uncontrolled rectification circuit is connected with the anode end M point of the load, and an output cathode end is connected with a cathode end N point of the load. The fully-control switch tube and the uncontrolled diode are introduced into a balance reactor, so a step number of an input current of a system is increased to 48, 60 or even more, a harmonic wave content of the input current is greatly reduced, and pollution on a power grid is reduced. The hybrid primary-side tap controllable balance converter has the advantages of simple structure and control, high efficiency and reliability and the like, and is suitable for various rectification devices.

The invention discloses a holographic color separation variable digital anti-counterfeiting mark, which comprises a transparent base material layer, a laser layer, a color layer and an adhesive sticker layer which are sequentially bonded from top to bottom, wherein the color layer comprises a first color layer and a second color layer which are arranged from top to bottom, are mutually bonded and have different colors, the transparent adhesive sticker layer is arranged under the second color layer, variable digits produced randomly by a system are respectively embedded in the first color layer and the second color layer, and the digits on the first color layer and the second color layer are mutually overlapped or mutually combined to display complete variable digits. The colors of the variable digits are two or more different colors, the variable digits can be separated and can also be overlapped, but are different in colors, the manufacturing difficulty is very high, and the variable digits are difficult to copy.

The invention discloses safety-line anti-counterfeiting paper with windows in the middle, a manufacturing method of the safety-line anti-counterfeiting paper and a meshing and forming system. The safety-line anti-counterfeiting paper comprises a second mesh paper web, first mesh paper webs and safety lines between the second mesh paper web and the first mesh paper webs. At least one long, thin and linear window which penetrates through two opposite sides of the paper is formed in the first mesh paper webs, the linear windows are parallel to the longitudinal direction of the first mesh paper webs, the center lines of the linear windows coincide with the central lines of the safety lines, the width of the linear windows is smaller than the width of the safety lines, and the number of the safety lines is same as the number of the windows. According to a manufacturing device of the safety-line anti-counterfeiting paper, a window forming device and a pay-off device of the safety lines are sequentially arranged in the positions, in front of a second mesh cage, of output paths of the first mesh paper webs. The manufacturing method of the safety-line anti-counterfeiting paper includes the steps that the windows are formed in the output paths of the first mesh paper webs, the safety lines are placed, and then the first mesh paper webs is compounded with the second mesh paper web. According to the novel structure of the anti-counterfeiting paper, the windows are continuously formed in the middle of the safety lines, and more anti-counterfeiting information can be borne.

The invention discloses a synchronous speed regulating method of a reversely speed regulating frequency-converter. A motor stator is connected with the electric supply directly, a rotor is connected with an output of the reversely speed regulating frequency-converter which is of a current mode, the reversely speed regulating frequency-converter can regulate magnitude, phase and frequency of current flow independently without being affected by rotor induced electromotive force. The synchronous speed regulating method has the advantages that motor speed is reverse to output frequency of the speed regulating frequency-converter, and the higher the output frequency of the speed regulating frequency-converter is, the lower the motor speed is; output power of the motor is reverse to output power of the speed regulating frequency-converter, and the higher the motor speed is, the bigger total output power of the motor is, while the lower the output power of the speed regulating transducer is; the motor is operated in a broadly synchronous state which belongs to synchronous motor operating performance.

The invention provides a wood veneer cylinder and a manufacturing process thereof, and belongs to the technical field of building. The wood veneer cylinder comprises a plurality sections of hollow and cylindrical connecting cylinders, wherein the upper and lower end surfaces of the connecting cylinders are mutually attached and stacked into a straight tube shape, each connecting cylinder comprises a keel frame and a circular arc-shaped high-density plate, each high-density plate covers the outer side of the corresponding keel frame, each keel frame comprises an annular whole circle keel and a straight strip-shaped straight keel, each whole circle keel is formed by splicing two semicircular keels, a plurality of clamp grooves in uniform distribution are formed in the circumferential direction of the semicircular keels, the straight keels can be clamped and embedded in the clamp grooves, the high-density plates and the keel frames are bonded together through glue water, and a layer of straight vein decoration surface is also pasted on the outer layer of each high-density plate. The invention also provides the manufacturing process of the wood veneer cylinder, the process comprises two links including factory processing and in-site assembly, the cost is reduced, the keel frame structure is simple, and can be conveyed to a site to be spliced after being processed in a factory, the efficiency is high, and the cost is low.