605 results about "Sandpaper" patented technology

The invention relates to furniture plate laser cutting equipment and a cutting method, and belongs to the technical field of laser cutting machines.The furniture plate laser cutting equipment comprises a machining table, a cross beam is arranged on the machining table, a laser head is arranged on the cross beam, and the laser head is slidably arranged on the cross beam and slides in the length direction of the cross beam; the driving device is used for driving the cross beam to slide and driving the laser head to slide to cut a plate; a protective cover is arranged on the laser head, the protective cover is made of a transparent material, a shielding piece is arranged in the protective cover, and the shielding piece is used for forming a shielding barrier in the protective cover to weaken the light intensity; the protective cover is arranged in the laser head body in a sliding mode, the protective cover slides in the vertical direction and is contained in the laser head body, polishing abrasive paper is arranged on the bottom wall of the protective cover and the side wall close to the bottom wall, the protective cover is rotationally arranged in the laser head body, and a first driving piece used for driving the protective cover to rotate is arranged in the laser head body. The laser cutting device has the effect of improving the laser cutting safety.

The utility model belongs to the technical field of cylindrical workpiece polishing, and mainly relates to a cambered surface polishing device which is characterized by comprising a support frame, abrasive paper, an arc-shaped mounting plate and a driving piece, the arc-shaped mounting plate is provided with an inner arc surface matched with the outer circumferential surface of a cylindrical workpiece to be polished; the abrasive paper is adhered to the inner arc surface and is used for polishing the outer circumferential surface of the cylindrical workpiece; the arc-shaped mounting plate is assembled on the supporting frame in a swinging mode around the central axis of the cylindrical workpiece where the arc-shaped mounting plate is located. The driving part is fixed to the supporting frame and is in transmission connection with the arc-shaped mounting plate so as to drive the arc-shaped mounting plate to swing back and forth around the central axis of the cylindrical workpiece. The outer circumferential surface of the cylindrical workpiece is in full contact with the abrasive paper on the arc-shaped mounting plate, the arc-shaped mounting plate swings up and down to be in contact friction with the self-rotating cylindrical workpiece, the contact area is larger, the grinding effect is better, and the grinding efficiency is higher.

The present invention relates to the field of coated abrasive technology, specifically to anti-clogging ceramic sandpaper and its preparation method. The technical key features are as follows: from bottom to top, it comprises: latex paper, a base glue, abrasive, a double glue, and an anti-clogging coating. The anti-clogging coating is prepared from the following components, calculated by weight: 30-50 parts aqueous emulsion, 10-15 parts graded filler, 3-5 parts dispersant, 2-3 parts water-soluble curing agent, and 60-70 parts water. The graded filler is ceramic corundum particles with the following gradation: particle size R < 250nm, 1-3%; 250≤R < 350nm, 65-75%; 350nm≤R < 450nm, 15-19%; 450≤R < 550nm, 3-5%. The anti-clogging ceramic sandpaper and its preparation method provided by the present invention significantly enhance the anti-clogging effect of the anti-clogging coating while effectively improving the sharpness and self-sharpening properties of the sandpaper surface.

The utility model relates to the technical field of cold headers, and provides a cold header for anchor bolt production, which comprises a base. According to the straightening device, raw materials are placed between the first straightening wheel and the second straightening wheel, the motor is started to drive the first gear to rotate so as to drive the auxiliary gear to rotate in an engaged mode, the auxiliary gear drives the third gear to rotate in an engaged mode, and the first gear and the third gear drive the connecting shaft to rotate so as to drive the second straightening wheel to rotate. The raw materials are driven to move through rotation of the second straightening wheels, the raw materials are conveyed, the raw materials are straightened in the raw material output process through arrangement of the first straightening wheels and the second straightening wheels, the raw materials are polished in the raw material conveying and moving process through arrangement of abrasive paper, and pretreatment of the raw materials in the feeding process is achieved; by means of the technical scheme, the problem that in the prior art, the quality of workpieces can be affected due to bending and rusting of raw materials is solved.

The invention relates to the technical field of electric vehicle frame production, in particular to laser cutting equipment for electric vehicle frame production, which comprises a machine table, a pushing mechanism, a laser cutting machine and a discharging mechanism, according to the laser cutting equipment for electric vehicle frame production, by arranging the discharging mechanism, an inner supporting rod is driven to reciprocate, relative friction motion is formed between a bag body abrasive paper layer and a cutting area, high-temperature molten slag generated in the cutting process is removed in real time, and the situation that the high-temperature molten slag is condensed and solidified on the inner wall of a pipe fitting to form hard hanging slag is prevented; meanwhile, finishing machining is carried out on the cutting seam, and the surface roughness is controlled within Ra3.2 microns; in addition, a slag blocking area can be constructed through the annular sealing effect of the bag body, and splashing and diffusion of slag in the inner cavity of the pipe fitting are effectively restrained.

The invention discloses a preparation method of a novel mixed metal oxide coating titanium electrode, and relates to the technical field of electrode preparation, the method comprises the following specific steps: titanium substrate pretreatment: a titanium plate is sequentially subjected to gradient polishing with 120-800-mesh abrasive paper, the polished titanium substrate is subjected to hydrochloric acid solution etching, argon plasma surface activation and drying treatment, and a titanium substrate is obtained; obtaining a clean substrate surface with proper roughness; through the low-temperature plasma treatment, pulsed bias magnetron sputtering and laser-induced atomic layer deposition (LA-ALD) combined technology, the binding force of the coating and the titanium substrate is remarkably improved, high-energy particles are used for bombarding the surface of the titanium substrate in the low-temperature plasma treatment, residual impurities are effectively removed, the surface roughness and active sites are increased, and the surface hardness of the titanium substrate is improved. In the pulsed bias magnetron sputtering process, the surface of the substrate is further cleaned through periodic ion bombardment, atomic diffusion and mixing between the coating and the substrate are promoted, a transition layer structure is formed, and therefore the binding force is greatly enhanced.

The invention discloses a combined type wind power blade rear edge mold closing foam machining tool, and relates to the technical field of grinding equipment. Comprising a grinding machine control main body, a grinding driving mechanism is arranged at the left side end of the grinding machine control main body, a rotating plate is arranged at the lower end of the grinding driving mechanism, grinding abrasive paper is arranged below the rotating plate, a protective dust collection mechanism is arranged on the outer side of the rotating plate, and an auxiliary frame is arranged on the side wall of the grinding machine control main body. The closed grinding space is constructed through the protective dust collection mechanism, the elastic cover and the abutting ring are matched to seal the grinding area, the dust collection opening, the dust collection frame and the dust collection pipe are matched to form a negative pressure dust collection channel, foam chippings generated during grinding can be rapidly collected, and meanwhile the situation that the chippings are attached to the surface of a mold or a blade to affect the mold closing precision and the bonding quality is prevented. And the sweeping mechanism is matched with the vibration block and the supporting spring, and vibrates after the vibration block collides with the sweeping rod, so that the swept chippings are shaken off and are extracted from the dust suction opening, and the chipping cleaning efficiency is further improved.

The invention discloses a corrosion method of an Al Si 10Mg alloy grain boundary, which mainly comprises the following steps of: 1, preparing a corrosion liquid which comprises the following components: 150mL of NaOH, 8-10g of NaOH and 3-5g of NaOH; 2, embedding an Al Si 10Mg sample; thirdly, the embedded samples are sequentially polished with abrasive paper from 400 meshes to 7000 meshes; 4, roughly polishing the ground sample; 5, smearing a surfactant on the sample subjected to rough polishing, and then carrying out fine polishing; 6, cleaning the polished sample with industrial alcohol; 7, heating the prepared corrosive liquid to 60-80 DEG C, and corroding the sample for 40-60 seconds; 8, cleaning the sample with industrial alcohol after corrosion patterns appear on the surface of the sample; and 9, carrying out drying treatment. After the method is used for corroding the Al Si 10Mg alloy, the crystal boundary of the alloy can be clearly observed, and the method is low in equipment requirement, simple in operation step, capable of saving cost, good in stability and suitable for researching the grain morphology, the grain size, the microstructure performance and the like of the Al S i 10Mg alloy.

The invention relates to the technical field of copper-aluminum bars, in particular to a copper-aluminum polymer diffusion hybrid welding method which is characterized by comprising the following steps: S1, welding nickel sheets with bare copper: compounding the nickel sheets with the thickness of 0.1-0.3 mm on the welding surfaces of the copper bars; s2, nickel sheet polishing: mechanically polishing the nickel sheet until the surface roughness Ra is less than or equal to 0.8 mu m; s3, the aluminum row is polished, specifically, the welding face of the aluminum row is polished in a one-way mode through abrasive paper of 800-2000 meshes till the roughness Ra is smaller than or equal to 1.0 micron; s4, copper and aluminum composite welding is conducted, specifically, the copper bar with the polished nickel piece and the polished aluminum bar are composited through polymer diffusion welding, the welding temperature is 400-500 DEG C, the pressure is 10-20 MPa, and heat preservation is conducted for 30-60 minutes; the nickel sheet with the proper thickness is compounded on the welding surface of the copper bar, the binding force of a welding interface is enhanced, then the nickel sheet is subjected to precise mechanical polishing, it is ensured that the surface roughness of the nickel sheet reaches the extremely low level, the welding surface of the aluminum bar is subjected to fine grinding treatment, and the adaptability of the welding surface is improved; and tight combination of the copper bar and the aluminum bar is achieved at specific welding temperature, pressure and heat preservation time, and practicability is high.

The invention relates to the field of wear resistance testing, in particular to an automatic testing method and testing equipment for wear resistance of a mobile phone protective film. According to the method, firstly, in the process that a polishing wheel rotates at different rotating speeds, abrasive paper of different mesh numbers and types is used for polishing the mobile phone protective film, and the target abrasive paper is combined with the mesh number of the target abrasive paper, rotating speed data of the target abrasive paper during polishing of the mobile phone protective film every time and a surface image of the mobile phone protective film after polishing of the target abrasive paper every time; the grinding effect value of the target abrasive paper during grinding of the mobile phone protective film each time is obtained according to the target abrasive paper and the surface distance between the mobile phone protective film and the grinding wheel after grinding of the target abrasive paper each time, and a sequence formed by the grinding effect values of all the abrasive paper during grinding of the mobile phone protective film each time is subjected to time sequence decomposition; and evaluating the wear resistance of the mobile phone protective film according to the data change of the trend term and the data distribution level of the residual term obtained through decomposition. According to the invention, the wear resistance of the mobile phone protective film can be evaluated more comprehensively and accurately.

The invention belongs to the technical field of abrasive paper production, and particularly relates to an automatic production and packaging system and method for environment-friendly water-based green abrasive paper. The material belt traction assembly is used for continuously conveying the material belt, the upper punching assembly and the lower punching assembly are used for punching the material grinding layer of the material belt, the first material grinding part and the second material grinding part which can be clamped with each other are obtained correspondingly, and the obtained first material grinding part and the obtained second material grinding part are transferred to the first abrasive paper base belt and the second abrasive paper base belt correspondingly; and then the two pieces of abrasive paper are laminated and compounded through the compounding and slitting assembly, and a self-protection packaged slitting product is obtained through slitting. The slitting product with the self-protection packaging function is formed by clamping the two pieces of abrasive paper, the abrasive paper base bands of the two pieces of abrasive paper serve as protective structures, a protective die does not need to be additionally sleeved on the two pieces of abrasive paper, self-protection packaging can be achieved through slitting after production, packaging materials can be saved, the environment can be protected, and the situations that the packaging film is damaged and abrasive materials are abraded are effectively avoided.

The invention discloses a high-alloy steel nitriding-laser quenching composite surface strengthening method which comprises the following steps: sequentially polishing the surface of high-alloy steel by using 240-mesh waterproof abrasive paper and 2000-mesh waterproof abrasive paper, then sequentially putting the high-alloy steel into ethanol and acetone for ultrasonic cleaning, and nitriding the pretreated high-alloy steel to form a nitriding layer; and cooling to room temperature along with the furnace under the atmosphere of nitrogen or ammonia gas to obtain the high alloy steel containing the nitriding layer. And blackening treatment is conducted in the atmosphere of argon or nitrogen, then laser quenching treatment is conducted, and high alloy steel surface strengthening treatment is completed. According to the nitriding-laser quenching composite surface strengthening process, the problems that a high alloy steel nitriding layer is shallow (smaller than 0.2 mm), interface brittleness is achieved, and the retained austenite content is high (larger than 20%) are effectively solved, the total treatment time is shorter than or equal to 16 h, the surface hardness of a modified layer is larger than or equal to 600 HV0.1, the thickness of the modified layer is larger than or equal to 1.5 mm, and the nitriding-laser quenching composite surface strengthening process is suitable for preparing key components such as aviation gears and heavy-duty bearings.

The invention discloses a chip processing method, which comprises the steps that a chip is provided, a top metal layer of the chip comprises a first region and a second region, a second barrier layer, a metal wiring layer and a first barrier layer are sequentially stacked on the first region, and an oxide layer and a passivation layer are sequentially stacked on the first barrier layer and the second region; thinning or removing the passivation layer through etching; grinding the chip through abrasive paper to remove the oxide layer and the first barrier layer in the first area, thinning the metal wiring layer and the oxide layer in the second area, and stopping grinding until part of the second barrier layer is exposed out of the edge of the chip; grinding a region, which does not expose the second barrier layer, in the first region through an eraser to remove a part of the metal wiring layer; removing the residual metal wiring layer through an alkaline solution; and etching the second barrier layer. According to the method, the top metal layer can be completely removed, the lower metal layer is prevented from being damaged when the top metal layer is removed, and it is guaranteed that the secondary top layer is complete and flat.

The invention discloses an ultra-precision polishing method for a thermoelectric material. The ultra-precision polishing method comprises the steps that S1, mechanical grinding and rough polishing are conducted on a thermoelectric material block through abrasive paper; wherein the abrasive paper sequentially uses metallographic abrasive paper with the abrasive particle mesh number from small to large; s2, diamond polishing paste or polishing liquid, CeO2 polishing liquid and Al2O3 polishing paste or polishing liquid are used as grinding materials, and mechanical polishing and fine polishing are carried out on the thermoelectric material block after mechanical grinding and rough polishing on a polishing machine; and S3, an alkaline SiO2 polishing solution or a water-based diamond polishing solution is used as a polishing medium, the thermoelectric material block subjected to mechanical polishing is subjected to repeated fine polishing and mechanochemical polishing on a polishing machine, and the thermoelectric material subjected to ultra-precision polishing is obtained. The surface roughness of the thermoelectric material obtained by the method does not exceed 1nm.

The utility model discloses a machining device for a guide fillet of a sealing structure, which comprises a grinding head, abrasive paper and a positioning shaft, and the grinding head is provided with a positioning cylinder and a rotary grinding surface which is formed by taking an inner concave arc R as a contour edge and taking the axis of the grinding head as a rotating shaft. Before a guide fillet is machined, abrasive paper is marked along the contour of a cutting sample plate and cut, then the abrasive paper is pasted to a grinding head through glue, a positioning shaft is inserted into a pipe joint, the grinding head is clamped through a handheld electric drill, a positioning cylinder is inserted into a positioning round hole of the positioning shaft, and the grinding head is pressed to a to-be-machined position for grinding; and finally, metallographic abrasive paper is used for polishing the ground round corner, and alcohol is used for cleaning the ground round corner. By adopting the guide fillet processing device, the problems of difficult repair and low repair qualification rate caused by missing processing of the guide fillet can be solved.

The invention discloses a high-temperature-resistant metal honeycomb equipment forming method which comprises the following steps: S1, performing blanking calculation, extracting a single corrugated plate in a metal honeycomb core body, and unfolding the single corrugated plate according to an equal length principle so as to determine size parameters of a pre-connected area and a to-be-stretched area; s2, chemical oil removal is conducted, specifically, the surface of the metal foil is treated, stains and oxide films on the surface of the metal foil are removed, the subsequent resistance welding strength is improved, and the situation of welding breakage during stretching is avoided; s3, surface activation is conducted, specifically, a mechanical-chemical synergistic process is adopted, silicon carbide abrasive paper is adopted for polishing the metal foil, the surface roughness Ra value of the metal foil is reduced, the specific surface area is increased, the contact angle is reduced, and finally drying treatment is conducted; and S4, material cutting is conducted, specifically, an ultra-short pulse laser cutting technology is adopted for metal foil machining, and the allowance of 10 mm is reserved so that the foil can be fixed. The stretching parameters can be flexibly adjusted according to different curvature requirements, and the preparation problem of the honeycomb core in a complex shape is successfully solved.

The invention discloses a bearing balance block grinding tool and method, and belongs to the technical field of bearing balance block machining. The technical problems that in the horizontal grinding machining process of an existing balance block with the contact face being an arc spherical face, due to the fact that the balance block cannot serve as an alignment reference, deviation is prone to occurring in the machining process, and the machining precision is insufficient are solved. The base comprises a plurality of first bosses evenly distributed in the horizontal circumferential direction, the abrasive paper is pasted to the top faces of the first bosses, the clamping block is in a cylindrical pipe shape, a conical hole is formed in the lower portion of the inner wall of the clamping block, four sets of positioning grooves are evenly formed in the upper end of the clamping block in the circumferential direction, and each set of positioning grooves is provided with two adjacent notches. A compression spring is sleeved on a second boss in the middle of the positioning groove, the upper portion of the rotating shaft is cylindrical, four groups of double-fork type positioning teeth are evenly arranged at the bottom of the rotating shaft in the circumferential direction, and the positioning teeth are installed in a notch of the positioning groove in a sliding mode in the vertical direction. And the machining precision is improved. The grinding device is used for grinding the balance block for the bearing.

The invention discloses a nondestructive testing method for the thickness of oxide scale on the surface of thin-gauge strip steel, and belongs to the technical field of metal material surface detection.The nondestructive testing method comprises the steps that S1, plate shearing and carbon powder composite sample preparation are conducted, specifically, firstly, the thin-gauge strip steel is cut through a plate shearing machine to obtain a strip steel sample, then the strip steel sample and carbon powder are mixed, and finally hot inlaying treatment is conducted; s2, multi-angle progressive grinding and polishing are conducted, and in the grinding and polishing process, the sample is rotated by 20 + / -5 degrees every time the abrasive paper is replaced; s3, gray scale and depth-of-field two-parameter analysis: firstly, based on the gray scale difference among the carbon powder, the strip steel substrate and the oxide layer, carrying out regional distinguishing on the carbon powder, the strip steel substrate and the oxide layer; acquiring depth-of-field parameters for different areas; and finally, obtaining the thickness of the oxide layer according to the difference value of the three depth-of-field parameters. Through the synergistic effect of the sample preparation technology, the grinding and polishing technology and two-parameter analysis, the detection precision is improved, and meanwhile the detection efficiency is improved.

This disclosure provides a polishing apparatus, belonging to the field of machining. The polishing apparatus includes a fixed base, a polishing assembly, and at least one pair of guide assemblies. The polishing assembly includes sandpaper and two drive rollers, which are arranged in parallel and rotatably connected to the fixed base. The sandpaper is wound around the two drive rollers at both ends along its length, and has a polishing surface for polishing parts. Each of the at least one pair of guide assemblies is connected to the fixed base. Each pair of guide assemblies is symmetrically arranged on opposite sides of the sandpaper in the width direction between the two drive rollers, and each pair of guide assemblies is configured to bend the opposite sides of the sandpaper in the width direction between the two drive rollers toward the opposite side of the polishing surface. This disclosure can improve the polishing effect of parts.

The invention discloses an anti-halation material, anti-halation microcrystalline glass, anti-halation reinforced microcrystalline glass and a preparation method and application thereof.The anti-halation microcrystalline glass comprises a glass body and a surface blackening layer, the thickness of the blackening layer is 0.15-0.35 mm, the average spectrum transmittance of the blackening layer within the wavelength range of 380-780 nm is smaller than or equal to 1%, and the average light transmittance of the glass body is gt; 92%, and the maximum light transmittance gt; the preparation method comprises the following steps: melting the glass substrate, performing hydrogen reduction to form the blackened layer, and performing crystallization heat treatment. By optimizing the components and the process, after the glass is chemically strengthened, the bending strength is larger than or equal to 700 MPa, the falling ball impact height is larger than or equal to 1.3 m, and the falling heights of 80-mesh abrasive paper and 180-mesh abrasive paper are larger than or equal to 1.3 m / 1.6 m respectively. The anti-halation glass solves the technical problem that the existing anti-halation glass is difficult to give consideration to high light transmittance and high strength, and is suitable for optical windows in the fields of optical devices, display equipment and photovoltaics.

The invention relates to the technical field of lithium-aluminum-silicon glass reinforcement, in particular to lithium-aluminum-silicon glass, a cover plate and electronic equipment, the lithium-aluminum-silicon glass comprises a pressure stress layer and a tensile stress layer, the pressure stress layer is a part from the glass surface to DOL-0, and the rest is the tensile stress layer; the stress curve meets the conditions that CT-AV is larger than or equal to 70 MPa and smaller than or equal to 120 MPa, and CT-CV is larger than or equal to 100 MPa and smaller than or equal to 140 MPa; the absolute value of the average slope of stress distribution from the stress inflection point to DOL-0 is 1.2-2.3 MPa / mu m, the absolute value of the average slope of stress distribution from the surface of the glass to the stress inflection point is 60-250 MPa / mu m, the thickness range from the surface of the glass to the stress inflection point is 0-0.01 t, and the lithium-aluminum-silicon glass strengthening process is adjusted according to the conditions, so that the CT value is stabilized in the optimal range of glass strengthening. Therefore, the strength of the strengthened glass is obviously improved, and meanwhile, the phenomenon that the glass is self-exploded or the falling performance is reduced due to excessive strengthening is avoided. The problem that the whole machine abrasive paper falling performance is low due to the fact that existing lithium aluminum silicon glass is low in ion exchange depth is solved.

The application discloses a kind of wood comb tooth automatic polishing processing equipment, including rack and automatic polishing control system, the rack is provided with feeder, manipulator, sandpaper assembly and unloading area, the feeder is used to convey comb embryo to the material taking position of manipulator, the manipulator is used to grab comb embryo and moves to sandpaper assembly and is polished, after polishing is completed, manipulator places comb embryo in unloading area, and the automatic polishing control system is used to control feeder, manipulator and sandpaper assembly to execute corresponding action to complete the automatic polishing of comb embryo.The equipment can replace traditional simple polishing equipment and polishing method, eliminate high-intensity manual labor, improve the processing consistency of comb tooth quality, and improve polishing operation efficiency.

The radome gluing and pressing equipment comprises a fixed seat, a pressing mechanism and a gluing mechanism are arranged above the fixed seat, a supporting plate is rotationally connected to the interior of the fixed seat, a rotating ring is coaxially and fixedly arranged on the upper portion of the supporting plate, a driving mechanism is arranged on one side of the supporting plate, and a grinding mechanism is arranged above the fixed seat; the grinding mechanism comprises a limiting plate fixedly arranged on the rear side of the top face of the fixing base, a movable block is slidably connected to the middle of the limiting plate, abrasive paper is arranged on the bottom face of the movable block, a first annular groove is coaxially formed in the top face of the rotating ring, and a plurality of guide blocks are fixedly arranged on the inner side wall of the first annular groove in an annular structure at equal intervals. A supporting spring is fixedly arranged between the rear wall of the movable block and the inner wall of the limiting plate; the rear side of the movable block is connected with an air bag, an air cavity is formed in the movable block, and a plurality of air outlets are formed in the bottom face of the air cavity. The radar cover bonding surface polishing device can polish the bonding surface of a radar cover before a gluing and pressing process, remove a weak'surface layer 'generated by a mold pressing process, and guarantee the bonding effect.

The invention discloses a wall surface polishing treatment device for decoration construction, and relates to the technical field of wall surface polishing equipment.The wall surface polishing treatment device comprises a shell, a side cover is rotationally connected to the side edge of the shell, a circular groove is formed in the end face of one side of the shell, and a polishing disc is connected into the circular groove through a rotating shaft; round abrasive paper is installed on the working surface of the grinding disc. The power assembly is installed on the end face of the other side of the shell, and the power assembly is used for driving the grinding disc to rotate; through cooperative arrangement of the side grinding assembly and the reciprocating driving assembly, synchronous grinding treatment of the grinding disc and the side grinding assembly can be achieved, the device can rapidly grind the internal corner of the wall face, a side grinding block and the plane of the grinding disc are in a perpendicular state, the grinding position of the grinding disc can be limited in the grinding process, and the grinding efficiency is improved. And in addition, correction of the perpendicularity of the two adjacent planes at the internal corner of the wall surface can be achieved, and the quality of polishing construction is improved.

The utility model provides a kind of columnar wood flexible polishing device, including platform, the top of platform both sides is provided with movable rack, one movable rack inner wall is rotatably installed with clamping plate, another movable rack inner wall is rotatably installed with four jaw chuck, one movable rack outer wall is fixedly connected with servo motor, the transmission shaft of servo motor is movable and penetrates movable rack and is fixedly connected with four jaw chuck;The side of platform is connected with movable rod, the side wall of movable rod is connected with lifting plate, the bottom of lifting plate is movably connected with carrier plate, carrier plate bottom is connected with sponge block, and the bottom of sponge block is connected with sandpaper.The utility model can drive second limit sliding block to move by second electric push rod after a certain time of polishing when sandpaper of sponge block bottom is attached to columnar wood surface for polishing, so that the different positions of sandpaper can be replaced to attach wood surface for polishing, which is beneficial to avoid the accumulation of debris in the same position affecting the polishing effect, thereby facilitating efficient polishing.

The present invention relates to the technical field of rubber testing equipment, and specifically discloses a rubber wear resistance testing device, comprising a main structure, a friction structure and a fixed structure; the friction structure is fixedly arranged on the main structure, the main structure can drive the friction structure to rise and fall, sandpaper can be detachably installed on the friction structure, and the friction structure can change the shape of the sandpaper, the fixed structure is fixedly arranged on the main structure and is located below the friction structure, the fixed structure can contact the sandpaper on the friction structure, and the fixed structure is used to fix the rubber. The present invention integrates multiple testing functions into one, and can complete multiple types of plane, arc, rotation and other wear resistance tests without additional replacement of equipment components, significantly reducing the testing cost and improving the testing efficiency.

The invention provides an aluminum alloy pretreatment method based on complex reaction, which comprises the following steps: S1, polishing an LDH (Layered Double Hydroxides) growth surface by using abrasive paper, and cleaning and drying; s2, preparing a complexing agent solution, wherein a complexing agent is selected from at least one of tannic acid, gallic acid and protocatechuic acid; s3, the aluminum alloy sample treated in the step S1 is put into the complexing agent solution in the step S2, and constant potential is applied to the aluminum alloy; s4, preparing a mixed solution of Zn (NO3) 2.6 H2O and NH4NO3, and adding an ammonia water solution to adjust the pH value to 6-6.5; s5, immersing the aluminum alloy treated in the step S3 into the mixed solution in the step S4, and putting the aluminum alloy into a constant-temperature water bath kettle to generate a Zn-Al-LDH film; and S6, after the hydrothermal reaction is finished, cooling to room temperature, and washing and drying the obtained reaction product. The surface of the aluminum alloy is pretreated through the complexing agent, the potential between an intermetallic compound and an aluminum matrix can be effectively balanced, the micro-couple effect is fundamentally inhibited, and ideal conditions are created for uniform, compact and defect-free growth of LDH.

The utility model discloses a derusting device for welded pipe processing, which comprises a bottom plate, a vertical plate is fixed on one side of the upper surface of the bottom plate, a round hole is formed in the top end of the vertical plate, a rotating cylinder is rotatably connected in the round hole through a bearing, a clamping component is arranged in and outside the rotating cylinder, a top plate is fixed on the top end of the vertical plate, and the top plate is fixed on the top plate. A motor for driving the rotating cylinder to rotate is mounted on the upper surface of the top plate. According to the welding pipe polishing device, the bottom plate, the vertical plate, the rotating cylinder, the clamping assembly, the motor, the portal frame, the electric telescopic rod, the U-shaped frame and the polishing assembly are arranged, a welding pipe is fixed through the clamping assembly after being inserted into the rotating cylinder, then the polishing assembly is driven by the electric telescopic rod to descend, abrasive paper makes contact with the welding position of the welding pipe, and then the rotating cylinder is driven by the motor to rotate; and the clamping assembly can quickly fix the welded pipes with different diameters, so that the universality of the device is improved.

The application provides a sample polishing device, and belongs to the technical field of polishing equipment. The device comprises a supporting table, a positioning assembly and a polishing assembly arranged in sequence from bottom to top. The positioning assembly comprises rotating members and moving members respectively used for limiting two ends of a sample, and the rotating members and the moving members are respectively arranged at two ends of the top surface of the supporting table. The polishing assembly comprises a horizontal plate, a rack is arranged on the horizontal plate, a polishing member is arranged in the length direction of the horizontal plate, the polishing member comprises a rotating shaft, a gear is arranged at the upper end of the rotating shaft, a first bevel gear is arranged at the lower end of the rotating shaft, a second bevel gear coaxially arranged with the first bevel gear is arranged on one side of a roller arranged on a connecting seat, and a C-shaped block is vertically arranged on one side of the cantilever extension end. When the upper end of the C-shaped block is pressed against the rack, the gear is engaged with the rack, and the area of the annular sandpaper used for polishing is adjusted. The area of the annular sandpaper used for polishing the sample can be slowly adjusted during the polishing process, so that the grinding capacity of the annular sandpaper for polishing each part of the outer wall of the sample is consistent.

The invention discloses an automatic abrasive paper changing station for polishing, a polishing device and a control method, the automatic abrasive paper changing station for polishing comprises a storage mechanism, an unloading mechanism, an abrasive paper recognition mechanism and a rotation recognition mechanism, the storage mechanism comprises a storage rack, and the storage rack is provided with a storage bin channel; the discharging mechanism comprises an eccentric positioning assembly and a stripping clamping assembly, the stripping clamping assembly comprises a clamping table, a stripping clamping plate and a stripping clamping driving structure, the stripping clamping plate is provided with a stripping insertion end, the stripping clamping driving structure is used for driving the stripping insertion end to move towards the clamping table, and the eccentric positioning assembly comprises an eccentric positioning block and an eccentric buffering structure. A V-shaped eccentric positioning groove is formed in the end, arranged in the same direction as the stripping insertion end, of the eccentric positioning block, and the eccentric buffering structure is used for providing first positioning buffering force in the first direction for the eccentric positioning block so that the grinding head can be pushed to the set eccentric posture. The abrasive paper is automatically unloaded, whether the abrasive paper is unloaded from the grinding head or not is recognized, and the rotating posture of the grinding head and sand taking are recognized.