1404 results about "Emery paper" patented technology

The invention provides a method for removing the ceramic surface stains, the method firstly uses dust-free cloth to dip isopropanol to polish the ceramic surface till being colorless; the solution of NH4OH: H2O2: H2O which is equal to 1: 0.6 to 1.5 to 2 to 5 is used for soaking the ceramics after the flushing by deionized water; then the ceramics is arranged in the deionized water to carry out the ultrasonic cleaning, if the stains are not removed still, emery paper with 1500 to 2000 mesh is dipped with the solution of HCl: H2O2: H2O which is equal to 1: 2 to 4: 8 to 10 to carry out the grinding removal of the stains; finally, the deionized water is used for flushing, the N2 is used for drying, and the baking is carried out for 1.5 to 3 hours in an oven at 90 to 120 DEG C. The application of the method of the invention can effectively remove the ceramic surface pollutants, in particular to the surface stains on a ceramic part of semiconductor process equipment.

The invention discloses multi-principal element alloy powder and a method for preparing a coating on die steel through laser cladding by applying the multi-principal element powder. The multi-principal element alloy powder comprises the following components according to molar ratios: Co, Cr, Al, Ni and Mn with equal molar ratios. The method for manufacturing the coating comprises the steps that firstly, an oxidation film on the surface of the die steel is polished off by using metallographic abrasive paper, and absolute ethyl alcohol or acetone is used for cleaning the polished die steel; then a polyvinyl alcohol solution is utilized for being mixed with the multi-principal element alloy powder to form a pasty mixture; the pasty mixture is pre-arranged on the surface of the polished and cleaned die steel to form a pre-arranged cladding layer; after 5-6 h of vacuuming drying at 80 DEG C, the pre-arranged cladding layer is subjected to irradiation treatment, so that a cladding layer is obtained. By utilizing the cooperative compatibility effect of a multi-principal element high-entropy alloy, the manufactured cladding layer has the excellent properties of high rigidity, high abrasion-resistance, high corrosion-resistance and the like.

The invention discloses an abrasive paper (cloth) width slitting machine and relates to equipment for slitting grinding, polishing and cleaning materials. According to the abrasive paper (cloth) width slitting machine, an unreeling device is arranged on an adjustable machine frame, guiding rollers are arranged on the right side of the adjustable machine frame, a machine frame is arranged on the right side of the guiding rollers, one guiding roller and a guiding roller adjusting hand wheel are arranged on the left lateral side of the machine frame, the other guiding roller, a light-operated automatic deviation rectifying device and a splitting device are arranged on the top of the machine frame from left to right in sequence, an upper reeling device and a lower reeling device are arranged on the right side of the machine frame, a motor is arranged on the bottom of the machine frame and is connected with the splitting device and the lower reeling device through chains respectively, and the lower reeling device is further connected with the upper reeling device through a chain. According to the abrasive paper (cloth) width slitting machine, by omitting the secondary slitting procedure and adopting computer close-loop control and the human-computer interface, automation is realized in the whole process, the machine is made to be low in noise, accurate in splitting, high in speed and free of pollution in the whole splitting process, production efficiency is improved, product quality is guaranteed, production cost is reduced, and production cycle is shortened.

The invention discloses a preparation method of a metallographic sample of a cast iron oxidizing layer, comprising the steps: (1) manually cutting a sample; (2) grinding the abrasive surface of the sample; (3) embedding the sample; (4) grinding the abrasive surface of the embedded sample; (5) manually polishing the abrasive surface of the embedded sample: (6) manually polishing the abrasive surface of the embedded sample by sequentially utilizing a plurality of pieces of waterproof abrasive paper from thick to thin, and rotating the embedded sample by 90 DEG in the same direction as changing the abrasive paper once; and (7) polishing the abrasive surface of the embedded sample. In the steps, the embedded sample needs to be always ground in a single direction from the oxidizing layer to be tested to the cast iron layer on the abrasive surface. The preparation method prevents the metal tissue of the cast iron layer from disturbing the oxidizing layer to be tested and is easy to align to a grinding direction and convenient for operation.

The present invention relates to the field of grinding tools, in particular to a production method of a super-coating dry abrasive paper widely used to sand and polish the painted surfaces of furniture, musical instruments, etc. The production method of the super-coating dry abrasive paper of the present invention includes the following steps: substrate; primer; sand planting; composite glue; rolling; solidifying; flexing and humidifying; super coating; drying; rolling; cutting; packaging. The abrasive paper produced according to the production method has the advantages of sharpness, wear resistance, non-blocking and high strength, and the super coating of the soft basal body ensures that the abrasive paper can be slowly shed along with wood dust and abraded paint while sanding, thus greatly prolonging the service life of the abrasive paper.

The invention discloses a grinding and polishing process for repair of an aluminum alloy hub. The process includes the steps of S1, trimming and reshaping; S2, rough grinding; S3, packing; S4, accurate grinding; and S5, polishing. In the step S1, a scratched part of the hub or a protrusion at a welding repair part is trimmed to form a required model by an aluminum file or a grinding head; in the step S2, dry abrasive paper from number 80 to number 400 is successively selected to grind and trim the surface preliminarily; in the step S3, whether pores and pits exist in the ground surface is examined, and unsaturated resin putty or aluminum putty is used for filling the pores and the pits; in the step S4, for the trimmed surface with a curved surface examined to be qualified, waterproof abrasive paper from number 400 to number 800 is selected for modifying grinding in a skipping mode; and in the step S5, on the basis of accurate grinding, waterproof abrasive paper from number 1200 to number 2000 is further selected for grinding layer by layer in the order from thick to thin until scratches and grinding traces of the abrasive paper of the upper layer cannot be seen, and finally a polishing agent and a polishing wheel are used for polishing operation until the mirror surface effect is formed. According to the process, polishing treatment is carried out for repairing the aluminum alloy hub after rough grinding and accurate grinding, and therefore the surface of the aluminum alloy hub can have the mirror surface effect, and the repair effect is good.

The invention provides an abrasion resistance testing device which comprises a sliding mechanism, a rotating mechanism, a press part and an abrasive disc, wherein the press part is arranged on the sliding mechanism, and carries out reciprocating sliding under the driving of the sliding mechanism; and the abrasive disc is used for placing to-be-tested abrasive paper, and arranged on the rotating mechanism, meanwhile, the abrasive disc drives the to-be-tested abrasive paper to carry out a rotating motion under the driving of the rotating mechanism, and is rubbed with the press part which carries out reciprocating sliding.

The invention discloses a metal part surface polishing technology. Multi-time acid pickling and washing are additionally carried out to thoroughly clear away rust, impurities and oxidation layers on the surface of a metal part, and meanwhile, the double polishing technology including physical polishing and chemical polishing is adopted for polishing, and smoothness of the surface of the metal part is ensured; before oil on the metal part is removed, 40-mesh abrasive paper is used for polishing the surface of the metal part, and therefore the rust, impurities and the like on the surface can be put away in advance; after secondary washing is carried out, the metal part is aired in a drying manner, and after the metal part is washed, acid liquid still residues, and therefore the airing manner is adopted to facilitate volatilization of the acid liquid; the diameter of steel balls for polishing is 3 mm, the steel balls with the diameter can polish all positions of the surface of the metal part, and meanwhile, the polishing efficiency cannot be affected; and the concentration of a polishing agent is 30 g/L, and under the effect of the thick polishing agent, the metal part can be polished more smoothly.

A sanding block and a kit for sanding curved surfaces are provided. The sanding block includes an elongated body which has a first sanding surface; and a sandpaper removably affixed to the first sanding surfaces wherein the body is elastically deformable such that the block can conform against a curved surface to be sanded.

The invention provides a method to prepare lead metallic phase sample, which comprises: coarse grinding: using 320#-600# carbofrax emery paper and water as lubricant, then using carbofrax emery papers of 1000#, 1500# and 2000# to grinding; midst grinding: clearing the sample in supersonic device, polishing with polished cotton flannel; final grinding: clearing the sample in supersonic device, polishing the sample for 20-60s to drop 40ml H2O2+40ml CH3COOH etchant on new flannel; then, cleaning the sample, drying, and obtaining the final sample. This invention is simple but high definition.

A wood scraper having two oppositely angled blades on a single head, and preferably two heads with two oppositely angled blades on each head. Thus, on both the forward and reverse stroke, there are two spaced apart blades scraping the work piece. This covers twice the surface area with the same effort as a single-bladed or single-headed scraper. All the blades are rigid and have a straight edge. All the blade edges are aligned with the planar surface of the work piece. This produces a level cut and makes the tool more stable, making gouging unlikely and enhancing the efficiency of the scraping action. The tool can be operated easily with one hand. In addition, the use of straight blades allows all the blades to be sharpened easily and quickly and at the same time using a belt sander or on a sheet of emery paper on a flat surface.

The invention provides a method for improving a weld structure and performance of a magnesium alloy, which comprises the following steps: firstly, placing an magnesium alloy welding plate in a heat treatment furnace to carry out stress relief annealing for a certain time at a temperature of 250 DEG C to 350 DEG C; then, polishing and flattening a weld joint by adopting abrasive paper for metallograph to enable the magnesium alloy welding plate to be at the same height with a base material; and heating the magnesium alloy to a certain temperature higher than a recrystallization temperature and carrying out hot rolling after carrying out heat preservation for a certain time. The method is generally suitable for weld penetration magnesium alloy plates such as an AZ31 magnesium alloy plate, an AZ61 magnesium alloy plate, an AZ80 magnesium alloy plate and the like. Intensity of the weld joint and a heat affected zone of the welded magnesium alloy plate is obviously lower than that of the base material. By a means of carrying out hot rolling after carrying out heat preservation at a certain temperature, the method can effectively improve intensity of a magnesium alloy welding part and enables tissues and performance of the weld joint, the heat affected zone and a base metal to be consistent.

The invention discloses a metal plate polishing device. The device is characterized by comprising a base frame, a motor, a bearing mechanism and a transmission mechanism, wherein a polishing table face for arranging a metal plate is arranged on the upper end face of the base frame; the motor is arranged on the base frame and can rotate clockwise and anticlockwise; the bearing mechanism can be arranged on the polishing table face in a way of moving back and forth; sanding paper is detachably arranged on the bottom face; and the transmission mechanism is provided with a power input end connected with the motor and a power output end connected with the bearing mechanism. Compared with the prior art, the metal plate polishing device has the advantages that: the clockwise and anticlockwise rotation of the motor is converted into the back and forth movement of the bearing mechanism, so that the sanding paper on the bearing mechanism polishes the metal plate; the structure is simple; the automation degree is high; the polishing efficiency is improved; the whole polishing operation does not need manual operation substantially, so that the labor intensity is greatly reduced and human factors are reduced; and the uniformity and quality stability of the polished product are obviously better than those of the product polished by manual operation.

The invention relates to a brazing method for a non-metallic material and a metal material, in particular to a non-metallic material and metal material brazing method capable of forming interpenetrating network structure brazing seams. The problem that large residual stress exists on a joint welded through the brazing method for the non-metallic material and the metal material is solved. The method comprises the steps that grinding is carried out through abrasive paper; acetone is used for cleaning; the materials are overlapped according to a certain sequence; welding is carried out, and the materials are placed in a vacuum brazing furnace to be welded. The brazing method is used for brazing of the non-metallic material and the metal material.

The invention discloses a post-processing technology for an SLS workpiece surface. The post-processing technology comprises S1, surface abrasive blasting, wherein spraying materials of the size of 75-115 microns are adopted to carry out abrasive blasting processing on the surface of a workpiece; S2, polishing, wherein abrasive paper is used for polishing the surface of the workpiece; S3, resin blending agent spraying, wherein epoxy resin, EP curing agents and anhydrous alcohol are blended according to a ratio of 1:1:1-2, spraying is carried out on the surface of the workpiece, and the thickness of a sprayed resin layer is 50-70 microns; S4, polishing, wherein after the workpiece is dried, the surface of the workpiece is polished through the abrasive paper, and the resin layer is polished to be 35-50 microns thick; S5, polyester paint mixed liquor spraying, wherein after polyester main color paint, curing agents and diluents are blended according to a ratio of 1:0.5-1:1-1.5, spraying is carried out on the workpiece to form a finishing coat layer with a thickness of 40-60 microns. The post-processing technology is adopted to process the nylon SLS workpiece, the surface roughness, surface finish degree and coloring condition of the workpiece can be greatly improved, the strength of the surface of the workpiece is strengthened, and the workpiece is made to meet actual using needs.

The invention relates to a high temperature brazing method between multiple hard alloy slices and a strip stainless steel tool body. 304 stainless steel, hard alloy and sheet-shaped brazing filler metal are prepared, wherein transition layer metal is clamped in the middle of the sheet-shaped brazing filler metal; oxide layers on the surfaces of a stainless steel tool rest, the hard ally and the brazing filler metal are removed by abrasive paper; a brazed surface, the brazing filler metal and the transition layer alloy are cleaned by acetone; then brazing flux is coated on faces to be connected of the tool rest and the hard alloy slices; the brazing filler metal is placed between the steel tool rest and the hard alloy; each slice of hard alloy is respectively fixed on the tool rest by a fixture and then is placed into a closed box-type furnace filled with industrial argon to be heated and subjected to heat preservation; then the hard alloy is cooled to the room temperature with the furnace; workpieces are taken out; the fixtures are disassembled. A great number of alloy slices exist, the strip tool body is bent and deformed due to different coefficients of thermal expansion after welding and cold-pressed rectification on deformation can crush the hard alloy slices, and thus, a welded tool is heated to 450 DEG C, is subjected to heat preservation for 5 minutes, is directly taken out and is hot-pressed to eliminate welding deformation so as to obtain the product with a regular shape and high connection intensity.

The prevention from hardening upon storage of paste-like material by use of a lid having an inlet port, an outlet port, and a plastic bag attached to the inlet port. By expelling the air in contact with the paste-like material, the material can be prevented from hardening during storage. A similar lid is used in a pre-cleaning device situated between a dust-producing tool and a wet/dry vacuum. Dust-laden air enters the device through an inlet port and is discharged over a water filter. The pre-cleaned air is vacuumed to a wet/dry vacuum. The pre-cleaning process lengthens the useful life of the wet/dry vacuum. A hand-held sander is disclosed which provides for rapid change of sandpaper. The sander has a hollow upper handle component and a lower surface component which are held together with a latch. Depressing of a quick-release button allows separation of the two parts.

The invention discloses an aircraft repairing composite flexible automatic grinding device and a grinding method, and relates to the technical field of composite grinding. The aircraft repairing composite flexible automatic grinding device comprises a movable platform, a collaborative robot, a floating force sensitive grinding head mechanism, a dust suction device and a control assembly. The collaborative robot comprises a six-axis light mechanical arm, a six-dimensional force sensor, a robot controller and a demonstrator. The floating force sensitive grinding head mechanism comprises a floating constant-force device, an air control main shaft, an automatic changing tool installing interface, and a tool handle with a grinding wheel and abrasive paper. The dust suction device comprises a dust suction host and a dust suction cover installed at the tail end of the six-axis light mechanical arm. The dust suction cover is of an umbrella-shaped transparent plastic thin film elastic structure. One-way air guide holes from outside to inside are evenly distributed in the outer surface of the dust suction cover. A rubber suction strip is arranged on the edge of the cover mouth of the dust suction cover. By means of the aircraft repairing composite flexible automatic grinding device, the semi-automatic or automatic grinding, excavating, polishing and other operation processes related to the composite repairing are realized, the manual operation intensity is reduced, the occupational health hazards are relieved, and the repairing quality is improved.

The invention provides a method for preparation of a double-phase zirconium alloy EBSD sample by electrolytic polishing. The method adopts the steps of: firstly, utilizing wire-cutting equipment to cut a workpiece according to certain size from a double-phase zirconium alloy material along the directions of length, width and thickness; subjecting the cut workpiece to step-by-step polishing with abrasive paper to remove the oxide skin and polishing the workpiece bright; taking the double-phase zirconium alloy workpiece as the anode to connect a power supply positive electrode; taking a stainless steel sheet or other steel as the cathode to connect a power supply negative electrode, and preparing a sample by electrolytic polishing technology. The preparation method provided by the invention can achieve high diffraction pattern quality in EBSD (electron backscatter diffraction) testing so as to realize reliable characterization of alpha and beta zirconium alloy dual phase microstructure, grain size, microtexture, grain boundary characteristics, misorientation distribution and the like of the two phase of alpha and beta zirconium alloy. The electrolytic polishing liquid provided by the invention has the advantages of wide raw material sources, simple preparation, and low cost, etc. The electrolytic polishing method involved in the invention has the characteristics of simple operation and stable polishing effect, and the polished workpiece has high good flatness and high surface smoothness.

The invention provides an environment-protection paint process used for furniture, which comprises the steps as follows: A: a blank is ground by an emery paper grinder; B: the ground plate is plastered so as to increase the smoothness of the surface; C: the plate is filled with colorant or transparent putty; D: the primer with high hardness is sprayed once; E: the grinding is subsequently carried out so as to clean the residual plasters and grind the plate to be smooth; F: polyurethane primer is sprayed on the ground plate and the plate is painted and sealed; G: after twice primer spraying and grinding, a novel and environment-protection finishing paint is sprayed for coloring; H: the plate is conveyed to a specially made ultraviolet drying pipeline to carry out the drying and curing, and the drying time is at least 5 minutes. Compared with the prior art, the environment-protection paint process of the invention has the advantages of beautiful appearance, low cost, no polluting to the environment, no harms on human body, etc.

The invention relates to an automatic multilayer abrasive paper blanking device which comprises a feeding component, a conveying component, a cutting main unit, a stacking component, a waste collecting component and a discharging component. The feeding component, the conveying component, the cutting main unit, the stacking component and the waste collecting component are sequentially arranged, the discharging component is arranged beside the stacking component, the automatic feeding component comprises a plurality of sequentially arranged feeding mechanisms for storing abrasive paper, the stacking component comprises a supporting frame, a height-adjustable lifting mechanism, a knockout die plate, a pressing mechanism, a knockout mechanism, a limiting mechanism and a sensor, the supporting frame is arranged on the ground, the lifting mechanism is arranged in the supporting frame, the knockout die plate is mounted above the lifting mechanism and provided with a plurality of material holes, the pressing mechanism is arranged above the knockout die plate and matched with the knockout die plate to press abrasive paper, and the knockout mechanism is mounted on the supporting frame and can move to penetrate the material holes. By mutually matching the feeding component, the conveying component, the cutting main unit, the stacking component and the waste collecting component as a whole, the abrasive paper is automatically treated.