300 results about "Emery paper" patented technology

The invention belongs to the technical field of grinding equipment, and particularly relates to a welded pipe mold cambered surface smoothness accurate grinding device which comprises a workbench, a fixing assembly is arranged on one side of the upper end of the workbench and comprises two first circular plates arranged at the upper end of the workbench in a sliding mode, and an accurate grinding assembly is arranged on one side of the fixing assembly. The accurate grinding assembly comprises an arc-shaped plate slidably arranged at the upper end of the workbench, the side, close to the first circular plate, of the arc-shaped plate is wrapped with abrasive paper, second rectangular strips are rotatably arranged at the two ends of the side, away from the abrasive paper, of the arc-shaped plate, and a third rectangular strip is arranged between the second rectangular strips. A fourth rectangular strip is fixedly connected to the end, away from the arc-shaped plate, of the third rectangular strip, a second rectangular hole is formed in the position, corresponding to the third rectangular strip, of the fourth rectangular strip, and the third rectangular strip is slidably arranged in the second rectangular hole. And the practicability is low.

The invention provides a zirconium alloy metallographic specimen preparation method which comprises the following steps: (1) pretreatment: intercepting a specimen, avoiding a heat affected zone, and removing greasy dirt on the surface of the specimen; (2) mechanical grinding, wherein the mechanical grinding comprises step-by-step grinding by using metallographic abrasive paper; (3) chemical polishing: chemical polishing comprises the steps of preparing a chemical polishing solution, soaking the sample in the solution and cleaning and wiping the sample, and the chemical polishing solution comprises nitric acid, hydrofluoric acid, oxalic acid and deionized water which are mixed and placed in a polyethylene container; and (4) post-treatment: placing the sample in a nitrogen protective atmosphere furnace, forming an oxide layer on the surface of the sample, and removing residual oxide particles. According to the method, nitric acid, hydrofluoric acid, oxalic acid and deionized water are mixed and placed in a polyethylene container, and the sample is chemically polished, so that the metallographic test piece of the zirconium alloy can be safely and effectively treated, and observation and analysis of a metallographic structure are guaranteed.

The invention relates to the field of hole sealing agent quality detection, in particular to a nickel-free medium-temperature hole sealing agent drying abrasion resistance detection device and method based on visual image intelligent sensing, and the device comprises a rack which is provided with a visual detection device and a rotating frame capable of rotating; the two sets of supporting structures are rotationally installed on the rotating frame, each supporting structure comprises a plurality of sets of first arc-shaped pieces and second arc-shaped pieces which are circumferentially arranged at equal intervals, and the first arc-shaped pieces and the second arc-shaped pieces can form a cylindrical structure; when the rotating frame rotates, one set of cylindrical structures can be kept in a first state or a second state, and when the cylindrical structures are in the first state, the annular abrasive paper can be driven to rotate; the traction assembly is connected with the first arc-shaped pieces and the second arc-shaped pieces, in the second state, the traction assembly can drive the multiple sets of second arc-shaped pieces to move close to one another, after the second arc-shaped pieces move by a preset distance, the multiple sets of first arc-shaped pieces are driven to move close to one another, and the detection process is simplified.

The invention discloses a method for prolonging the service life of a resistance spot-welding electrode, a manufactured resistance spot-welding electrode cap and application, and the method comprises the following steps: taking a chromium-zirconium-copper electrode cap as a base body, grinding the working surface of the base body step by step by adopting abrasive paper, and then sequentially polishing, ultrasonically cleaning and drying to obtain a pretreated base body; performing vacuum zirconium permeation treatment on the pretreated matrix by adopting a permeation agent so as to form a zirconium-rich solid solution diffusion layer in the pretreated matrix, thereby obtaining the matrix subjected to zirconium permeation reinforcement; physical vapor deposition treatment is adopted, and a metal transition layer is deposited on the surface of the solid solution diffusion layer of the matrix subjected to zirconium permeation strengthening; wherein the metal transition layer is a Cr transition layer or a Ti transition layer; and a graphite target and titanium target co-sputtering mode is adopted, and a composite gradient functional layer is sputtered and deposited on the surface of the metal transition layer of the matrix treated in the step S3. The electrode service life of the method is improved by magnitude order, and the effect is extremely remarkable.

The invention belongs to the technical field of coatings, and particularly relates to an anti-icing coating composition and a preparation method thereof. The icing-resistant coating composition is prepared from the following components: a component A, a component B and a component C, wherein the component A is prepared from the following components in percentage by weight: 50.0 to 70.0 percent of fluorocarbon resin, 0.5 to 1.0 percent of a de-foaming agent, 0.5 to 1.0 percent of a dispersing agent, 3.0 to 14.0 percent of xylene, 10.0 to 20.0 percent of titanium dioxide, 10.0 to 20.0 percent of microcapsule particles and 0.1 to 0.3 percent of a flatting agent; the component B is prepared from the following components in percentage by weight: 70.0 to 90.0 percent of an isocyanate curing agent and 10 to 30 percent of xylene; the mass ratio of the component A to the component B is 100: 15. Through the synergistic effect of the low-surface-energy fluorocarbon resin and the microcapsules, the efficient anti-icing / deicing effect is achieved, the contact angle of the coating can reach 110 degrees or above, and the coating still has good anti-icing capacity after being polished and damaged by 120-mesh abrasive paper.

The invention discloses a metallographic sample preparation method and device based on rotating speed grading regulation and control, and belongs to the technical field of metallographic grinding sample preparation. In the rough grinding stage, the rotating speed is set to be Va, and the lasting time is Ta; in the fine grinding stage, the rotating speed is set to be Vb, and the lasting time is Tb; in the polishing stage, the rotating speed is set to be Vc, and the lasting time is Tc; an abrasive paper annular three-area reuse strategy is adopted; according to the abrasive paper partition design, an abrasive paper disc is divided into three concentric ring areas, and from an outer ring to an inner ring, the mesh number range of the abrasive paper on the outer ring is P80-P240; the mesh number range of the abrasive paper of the middle ring is P320-P600; the mesh number range of the abrasive paper of the inner ring is P800-P1500; identifying and replacing, and transferring the sample to middle ring abrasive paper to perform accurate grinding operation when the outer ring abrasive paper is worn to be incapable of meeting the rough grinding effect; when the middle ring abrasive paper is abraded until the fine grinding effect cannot be met, the sample is moved to the inner ring abrasive paper to be polished; and the energy consumption is optimized.

The invention relates to the technical field of metal round pipe machining, in particular to an end face cutting device for metal round pipe machining, which comprises a bottom plate, supporting legs are fixedly mounted on the bottom surface of the bottom plate and close to four groups of corners, and a first groove and a second groove are formed in the surface of the upper end of the bottom plate in a penetrating manner. According to the round pipe cutting device, cutting of a round pipe body is completed, the cutting end face of the round pipe body is automatically polished and deburred, the working efficiency of cutting machining of the round pipe body is improved, multi-direction polishing is achieved, the polishing effect is improved, and by arranging a pushing mechanism, abrasive paper generates an annular recess to be attached to the inner edge and the outer edge of the end face of the round pipe body; and a cleaning mechanism is arranged, so that ground chippings adhering to the surface of the abrasive paper can be well and comprehensively removed, and the situation that the chippings adhere to the abrasive paper, shield the abrasive paper and affect the grinding effect on the circular pipe body is avoided.

The utility model provides a grinding device which comprises a grinding medium disc, and grinding materials are arranged on the grinding medium disc. The moving platform is used for bearing the grinding medium disc and driving the grinding medium disc to move along a certain track; the driving mechanism provides driving power for the motion platform; the base is used for supporting the motion platform; the grinding disc is used for keeping the workpiece to abut against the grinding material on the grinding medium disc; the track is formed by superposition of x-axis simple harmonic motion and y-axis simple harmonic motion. According to the grinding device, only simple harmonic motion of the motion platform is executed, symmetrical grinding of the workpiece can be achieved, and the grinding effect of the workpiece is more centrosymmetric; in addition, the traversal degree of the motion trail formed by the grinding action to the abrasive paper is high, and the abrasive paper can be fully utilized without additionally arranging other linear motion driving devices.

The utility model belongs to the technical field of machining, and discloses a surface polishing device for a hard anodized layer of an aluminum alloy inner hole. One end of the mandrel and one end of the silica gel expansion sleeve are installed in a sealed mode; the other end of the silica gel expansion sleeve is fastened with the mandrel; the other end of the mandrel extends out of the silica gel expansion sleeve and is internally provided with a plug; the through hole is located in the outer circle of the mandrel in the silica gel expansion sleeve. Polishing abrasive paper is uniformly adhered to the silica gel expansion sleeve in the axial direction; and the actuating cylinder is sleeved outside the silica gel expansion sleeve. The pressure source is a pressure air source or a pressure water source. The aluminum alloy inner hole hard anodized layer surface polishing device can replace manual polishing, flexible expansion and contraction are achieved through the arrangement of the silica gel expansion sleeve, the polishing effect is good and even, the structure is simple, and economical efficiency is good.

The invention discloses a method for improving the current downloading capacity of an REBCO superconducting layer in a magnetic field, and belongs to the field of superconductor materials, and the method comprises the steps: depositing an auxiliary layer on the surface of the REBCO superconducting layer, and carrying out the rotary grinding of the auxiliary layer on abrasive paper in cooperation with a cleaning solution, so as to introduce high-density dislocation into the REBCO superconducting layer, and cleaning the surface of the ground REBCO superconducting layer by using a cleaning solution, depositing a silver layer, and carrying out oxygen absorption treatment to obtain the final REBCO superconducting tape. According to the technical scheme, the on-site performance of the REBCO superconducting layer can be improved at low cost.

The utility model provides an abrasive paper frame, and belongs to the technical field of polishing equipment. The abrasive paper frame comprises a base plate, more than two mounting seats are arranged on the base plate, each mounting seat is provided with a pressing piece and a clamping structure, each pressing piece comprises a connecting rod, each connecting rod is provided with a pressing block, and each connecting rod can be clamped in the corresponding clamping structure and enables the corresponding pressing block to abut against the base plate. According to the abrasive paper frame, the connecting rod of the pressing piece is clamped through the clamping structure, the abrasive paper is pressed and fixed through the pressing block on the connecting rod, operation is easy, and the abrasive paper is conveniently fixed.

The invention discloses a special-shaped metal part surface grinding and deburring device which is characterized in that a driving motor is fixedly mounted at the upper part of the inner side of a bracket; the transmission mechanism is installed on the upper portion in the support and used for conveying the special-shaped metal parts; the grinding mechanism is mounted at the upper part of the inner side of the bracket and is used for grinding and deburring the upper surface of the special-shaped metal part; the grinding mechanism comprises a third gear, a fourth gear, a tensioning roll shaft, a conveying roll shaft and an abrasive paper conveying belt. The third gear, the fourth gear, the tensioning roll shaft and the conveying roll shaft are all rotationally connected to one side of the interior of the support. According to the special-shaped metal part deburring device, by arranging the transmission mechanism and the grinding mechanism, the deburring precision and efficiency of special-shaped metal parts are improved, surface damage and non-uniformity caused by manual grinding are avoided, and therefore the overall quality and use performance of the parts are improved.

The invention provides a grinding head and a grinding device, and relates to the technical field of grinding equipment, the grinding head comprises a mounting sleeve, an elastic expansion cylinder, grinding abrasive paper and a pressing piece, one end of the mounting sleeve is provided with a connector, the other end of the mounting sleeve is provided with an opening, and the side wall of the mounting sleeve is provided with a first strip-shaped groove penetrating to the opening; the elastic expansion cylinder can be placed in the mounting sleeve and attached to the mounting sleeve, and a second strip-shaped groove is formed in the elastic expansion cylinder; the polishing abrasive paper is wound outside the mounting sleeve, and the two ends of the polishing abrasive paper are inserted into the first strip-shaped grooves and can extend into the second strip-shaped grooves; the pressing piece comprises a pressing piece and a positioning screw rod, and the pressing piece is arranged on one side of the opening end of the mounting sleeve; the positioning screw is arranged on the pressing piece in a penetrating mode, the pressing piece is pressed on the installation sleeve through the head of the positioning screw, an installation table is arranged in the installation sleeve, and a threaded hole matched with the positioning screw is formed in the installation table. According to the polishing device, polishing abrasive paper can be rapidly mounted and dismounted, so that the polishing efficiency is improved.

The invention provides a surface pretreatment method of an aluminum alloy, which comprises the following steps: polishing an LDH growth surface by using abrasive paper, washing the surface of the aluminum alloy by using deionized water and absolute ethyl alcohol in sequence, putting the washed aluminum alloy into absolute ethyl alcohol to ultrasonically remove surface impurities, and treating the surface of the aluminum alloy by using acid to obtain the aluminum alloy. The method can weaken the adverse effect of an intermetallic compound when LDH grows on the surface of the aluminum alloy, and then a ZnAl-LDH film layer is generated on the surface of the treated aluminum alloy by adopting a hydrothermal method. By means of the treatment method, part of intermetallic compounds can be dissolved, a complex film is formed on the surface, the potential difference of different areas of the surface is reduced, the adverse effect of the intermetallic compounds when LDH grows on the surface of the aluminum alloy can be weakened, an LDH film layer with better corrosion resistance is generated, and when a corrosive medium invades the film layer, the corrosion resistance of the film layer is improved. The metal substrate is effectively prevented from being damaged by a corrosive medium through chloride ion absorption and a physical barrier effect, so that corrosion of chloride ions to the substrate is reduced, and the corrosion resistance of the substrate is improved.

The invention provides a method for characterizing a microstructure of a maceral in shale by combining a light microscope and an electron microscope, which comprises the following steps: preparing a shale sample to be observed to obtain a sample with a required specification; abrasive paper of different specifications is used for polishing, and a sample with the thickness being 3-5 mm is obtained; performing argon ion polishing on a to-be-observed surface of the treated sample; straight lines which are perpendicular to each other and spaced by 1 mm in the transverse direction and the longitudinal direction are engraved on the polished to-be-observed face through a laser engraving machine, and the straight lines are numbered respectively; carrying out optical microscope observation on the processed sample, identifying the interested macerals, photographing, and recording the number of the laser engraving straight line closest to the macerals; and carrying out scanning electron microscope observation on the sample, repositioning the interested macerals according to the recorded numbers, and carrying out microstructure observation and photographing on the interested macerals. According to the method, the microstructure of the maceral in the shale can be rapidly, economically and effectively represented.

The invention discloses microcrystalline glass with excellent mechanical properties and weather resistance. Main crystalline phases of the microcrystalline glass are petalite and silicon lithium stone; the overall crystallinity of the microcrystalline glass is 85% or above; the mass fraction of Na2O on the surface of the microcrystalline is 1%-5%, the mass fraction of K2O is 1%-3%, the mass fraction ratio of Na2O to K2O is 1-3, and the microcrystalline glass is prepared through melting, heat treatment, slicing and two times of chemical strengthening. By designing a two-strong process with proper surface K2O and Na2O concentrations, the weatherability performance better than that in the prior art is obtained, and meanwhile, the performance of 4PB / ROR / falling ball / abrasive paper is improved to a certain extent.

The invention discloses a charging box fission pattern spraying process which comprises the following steps: S1, incoming material inspection: ensuring that the surface of a base material is flawless and pollution-free and meets the requirements of spraying pretreatment; the surface of the base material is subjected to rough grinding and fine grinding through abrasive paper or a mechanical grinding tool, uneven parts, scratches and an oxide layer on the surface are removed, and a uniform rough surface is formed to enhance the adhesive force of a coating; s3, ultrasonic cleaning is conducted, specifically, oil stains and dust impurities left on the surface are removed through ultrasonic vibration; and S4, baking: drying or airing after cleaning to form a protective film, and enhancing the anti-rust capability. The charging box is reasonable in design, the attractiveness of the charging box can be improved, the coating can effectively resist scraping, abrasion, corrosion and the like in daily use, the product quality can be guaranteed, meanwhile, the production period is shortened, the production cost is reduced, and the enterprise production benefits and the market response speed are improved.

The utility model discloses a paint surface polishing tool installed on a collaborative robot, which comprises a device body, the device body comprises a driving device, guide rods, a guide device and a polishing device, a group of guide rods are symmetrically installed at the bottom of the driving device, the polishing device is installed at the bottom of the group of guide rods, and the guide device is sleeved on the group of guide rods; the polishing device comprises a base block and a set of swing discs, the swing discs are of a semicircular structure, the base block is located between the set of swing discs, hinges are arranged between the base block and the swing discs, swing shaft lugs are arranged at the tops of the swing discs, connecting shafts are installed in the swing shaft lugs through rotating shafts, and the other ends of the connecting shafts are connected with the guiding device. Burr buckles are arranged at the bottoms of the swing discs, and sponge abrasive paper discs are installed at the bottoms of the burr buckles. According to the device, the paint surface polishing efficiency can be improved, the polishing range can be adjusted, accordingly, abrasive paper is driven to be in a folded state, and narrow areas such as A columns can be polished.

The invention discloses a water-saving irrigation and fertilization device for intelligent agricultural planting, and relates to the field of agricultural irrigation, the water-saving irrigation and fertilization device comprises a water storage tank, and also comprises a water spray pipe for spraying water in the water storage tank for irrigation; the water outlet cleaning mechanism is used for cleaning the outer wall of the water spraying pipe, and the water outlet cleaning mechanism is located on the outer wall of the water spraying pipe; according to the water-saving irrigation and fertilization device for intelligent agricultural planting, through the effect of a water outlet cleaning mechanism, when a water spraying pipe rotates, water spraying holes in the outer wall of the water spraying pipe make friction contact with a friction roller, the friction roller is driven to rotate according to the effect of friction force, and friction abrasive paper arranged on the outer wall of the friction roller increases the friction force between the friction abrasive paper and the water spraying holes; dust and impurities attached to the outer wall of the water spraying hole during water spraying can be efficiently removed through friction, the smoothness of the water spraying hole is improved, it is guaranteed that irrigation water can be evenly and stably sprayed out, and the irrigation quality is improved.

The utility model discloses cold-drawn steel wire straightening equipment, which belongs to the field of steel wire straightening equipment and comprises a bottom plate, a straightening machine is fixedly connected onto the bottom plate, an output port is fixedly connected onto the side surface of the straightening machine, and a cleaning component is movably mounted on the bottom plate and positioned on the side surface of the output port. The cleaning assembly comprises a storage box, a movable frame, a first friction wheel, a second friction wheel, a fixing plate, a supporting rod, a fixing rod, a first spring and abrasive paper, through the cleaning assembly, a steel wire slides between the abrasive paper of the first friction wheel and the abrasive paper of the second friction wheel, so that chippings and residues are removed, the abrasive paper is convenient to replace by loosening a fastening bolt, and the cleaning efficiency is improved. The fixing limitation of the first friction wheel or the second friction wheel is relieved by pulling the fixing rod, and the position of the abrasive paper on the first friction wheel or the second friction wheel is conveniently and synchronously adjusted by rotating the first friction wheel or the second friction wheel, so that the abrasive paper can be fully utilized, and the use is more convenient.

The invention relates to the technical field of valve element ejector rod coping, in particular to a valve element ejector rod coping tool which is characterized in that a limiting sleeve is arranged in a holding cylinder, a valve element ejector rod to be coped is inserted into one end of the limiting sleeve, a guide sleeve is detachably installed at the bottom of the limiting sleeve, and a guide hole allowing the valve element ejector rod to be coped to penetrate out is formed in the guide sleeve; the bottom end of the abutting piece abuts against one end of the limiting sleeve. One end of a to-be-ground valve element ejector rod is placed into the limiting sleeve and firmly fixed, the limiting sleeve abuts against the abutting piece, the abutting piece is adjusted, the dial gauge is observed, the to-be-ground valve element ejector rod is adjusted to the proper position, then the guide sleeve is installed, and the to-be-ground end valve element ejector rod extends out of the guide sleeve through a through hole in the guide sleeve. And the extension length is equal to the to-be-ground length, at the moment, an assembler can hold the tool in the vertical state, the to-be-ground end of the valve element ejector rod is ground through a grinding disc or abrasive paper, and repeated measurement is not needed.

The invention discloses a method for repairing a guide groove of a piston rod of an aircraft refueling probe, which belongs to the field of guide groove repairing methods and comprises the following steps: step 1, designing and manufacturing an inner hole cladding head with the outer diameter of not more than 40mm, the laser focal length of 15-20mm and the powder coke of 15-20mm; 2, an inner groove of the oil receiving probe to be repaired is pretreated, namely a dry lubricant on the surface is removed through abrasive paper, and alcohol or acetone is used for cleaning after ultrasonic cleaning; 3, the high-strength stainless steel powder is subjected to vacuum drying at a certain temperature, the powder is taken out after being cooled, the powder is loaded into a powder bin of external powder feeding equipment, heating is started, and the temperature is set to be 50-80 DEG C; and 4, the oil receiving exploring tube is fixed to an external positioner. According to the method, the laser inner hole cladding repairing technology is adopted, the special inner hole cladding gun is assembled, the reachability of repairing the guide groove is good, the method has the advantages of low heat input, high repairing precision, small surface roughness and the like, the post-processing difficulty is greatly reduced, and the repairing success rate is high.

The invention discloses a method for testing the content of elements in a metal tellurium ingot based on glow discharge mass spectrometry, the metal tellurium ingot is polished by white abrasive paper to obtain a flaky sample, the test surface is flat and smooth and has metallic luster, the sample preparation operation is simple, and the problem that the metal tellurium ingot cannot be directly fed in glow discharge mass spectrometry analysis can be effectively solved. The metal tellurium ingot as a sheet enters the glow discharge mass spectrometry step, impurities are not introduced into a sample, a test signal main body is a test sample, and potential impurity element pollution in the sample preparation process is reduced.

The utility model discloses a multifunctional sanding machine which comprises a sanding machine body, a transmission shaft is arranged at one end of the sanding machine, a protective cover is arranged on the outer side of the transmission shaft, an installation plate body is arranged at the bottom end of the transmission shaft, abrasive paper is arranged at the bottom end of the installation plate body, and a fixing mechanism is arranged between the abrasive paper and the installation plate body. A connecting plate on the outer side of the abrasive paper is fixed into a fixing plate, a clamping block in the fixing plate is arranged in a groove, the fixing plate makes contact with the abrasive paper, the abrasive paper can be preliminarily fixed, when the fixing plate is installed, a limiting plate is squeezed, meanwhile, a telescopic spring shrinks, and the abrasive paper is fixed through the resilience force effect of the spring. And the abrasive paper can be fixed between the limiting plate and the fixing plate, and the fixing effect on the abrasive paper can be further enhanced.

The utility model discloses a soft magnetic ferrite core surface finishing device, which relates to the technical field of magnetic core production and comprises a base and a support plate, electric cylinders are mounted on two sides of the bottom of the support plate, output ends of the electric cylinders are connected with a support disc through extension rods, and an inner ring of the support disc is connected with a transmission wheel. Through the arrangement of the polishing disc, the sleeve, the bonding layer, the polishing abrasive paper, the electric cylinder, the supporting disc, the transmission wheel and the first transmission groove, the surface of the ferrite core body can be conveniently polished and trimmed through the arrangement of the polishing disc; when an inner ring of an annular ferrite core body needs to be polished and trimmed or a gap of an E-shaped ferrite core body needs to be polished and trimmed, the output end of an electric cylinder drives a supporting disc to move upwards through an extension rod, the supporting disc moves upwards to drive a polishing disc to move upwards through a transmission wheel, and therefore polishing abrasive paper leaks out of the bottom of the polishing disc; the polishing head does not need to be disassembled or replaced or replaced to another polishing device, and operation is easy and convenient.

The utility model discloses a multi-head plane sander for scissors, which comprises a platform, a plurality of positioning grooves are arranged on the platform, templates are arranged in the positioning grooves, each template is provided with a die cavity matched with the scissors on one side, a plurality of driving rollers are arranged at one end of the platform in an up-down staggered manner, a plurality of annular abrasive papers are mounted outside the driving rollers, and a plurality of annular abrasive papers are mounted outside the annular abrasive papers. Driving mechanisms for driving the annular yarn to move transversely and lift up and down are installed on the two sides of the platform. The scissors polishing device is simple in structure, stability of the scissors during polishing is guaranteed, the annular abrasive paper moving towards the platform can conduct multiple polishing on the scissors, the polishing quality and efficiency are improved, the annular abrasive paper has downward pressing force, the force acting on the scissors during polishing can be controlled, and adaptability is improved.

The utility model discloses a device for polishing the edge of a charging tray, which comprises a machine table, a limit cylinder and an adjusting mechanism, a rotating mechanism is arranged on the machine table, a processing area is arranged on the rotating mechanism, a plurality of charging trays are stacked in the processing area, a frame is arranged on the machine table, the limit cylinder is fixedly connected with the frame, and an output shaft of the limit cylinder is rotatably connected with a pressing plate. The adjusting mechanism is connected with the frame and slidably connected with two symmetrical sliding seats, the sliding seats are provided with grinding assemblies, the grinding assemblies comprise grinding air cylinders and sliding plates, the grinding air cylinders are fixedly connected with the sliding seats, the sliding plates are slidably connected with the sliding seats, and output shafts of the grinding air cylinders are fixedly connected with the sliding plates. Abrasive paper is arranged on the sliding plate. According to the equipment for polishing the edges of the trays, the equipment is adopted for polishing the edges of the multiple trays in batches, and the efficiency of polishing leftover materials of the trays is improved.

The invention relates to the technical field of building material test and analysis, and discloses a cement concrete back scattering electron image analysis sample preparation method, which comprises: S1, crushing cement into a sample; s2, stopping hydration and drying at low temperature: soaking the sample in absolute ethyl alcohol or isopropanol, and drying at low temperature; s3, pre-polishing: pre-polishing the sample by using raw abrasive paper; s4, inlaying: inlaying the sample with low-viscosity epoxy resin in vacuum cold inlaying equipment; s5, rough grinding is conducted, specifically, the sample is ground through 800 #-2000 # abrasive paper; s6, secondary low-temperature drying: wiping the surface of the sample with absolute ethyl alcohol, and then performing low-temperature drying; s7, fine grinding: finely grinding the sample by using 2500 #-4000 # abrasive paper in sequence; s8, polishing: polishing the sample by using a 1000 nm polishing solution and a 500 nm polishing solution in sequence; and S9, final cleaning: wiping the surface of the sample with absolute ethyl alcohol to obtain the sample for analyzing the backscattered electron image with a flat and smooth surface. According to the scheme, the cement samples are processed according to the sequence, so that the flat and smooth samples without scratches and cracks can be obtained, and then the high-quality back scattering electron image is obtained.

The utility model discloses a gluing mechanism for soft folding-resistant abrasive paper, which comprises a processing table, positioning plates are mounted on two sides in the processing table, and paper winding rollers are mounted on the inner sides of the positioning plates; a glue storage mechanism is installed in the limiting frame, an elastic pressing plate is arranged above the glue storage mechanism, and a telescopic spring is connected to the upper portion of the elastic pressing plate. Driving motors are installed at one end of the clamping plate and one end of the paper winding roller, a glue uniformizing roller is installed on the inner side of the clamping plate, a linkage block is connected to the upper portion of the glue uniformizing roller, and a bidirectional push rod is connected to the inner side of the linkage block. Compared with an existing device, according to the gluing mechanism for the soft folding-resistant abrasive paper, the limiting effect on the glue storage mechanism can be achieved through the limiting frame, an elastic pressing plate and the glue storage mechanism stretch out and draw back mutually through a telescopic spring, and therefore the glue storage mechanism can be conveniently installed and positioned, and a two-way push rod can drive a linkage block and a clamping plate to stretch out and draw back relatively; therefore, the glue uniformizing roller can be conveniently assembled and disassembled.

The utility model discloses an abrasive paper compounding device, it includes loading subassembly, coating subassembly and compounding subassembly, the coating subassembly includes backup roll, coating roll and gluing groove, backup roll is located just below coating roll, gluing groove is used for receiving adhesive, the bottom wall of gluing groove is equipped with heating element, and the heating element is equipped with heating element. One end of the gluing groove is open and abuts against the peripheral wall of the coating roller, and a gap is reserved between the gluing groove and the coating roller. The composite device has the advantages that the structure of the coating roller is simplified, meanwhile, the heating piece is arranged outside the gluing groove for receiving the adhesive, and when the heating piece is aged, the heating piece can be directly maintained outside the coating roller, so that the composite device is more convenient and quicker to maintain and repair as a whole.