26 results about "Surface roughness" patented technology

The invention discloses a precision grinding frock clamp, a grinding method and a product of a coating scraper ceramic coating. The precision grinding frock clamp comprises a seat rack, a rubber roll clamp installed on the seat rack and a transmission device which drives the rubber roll clamp to run. The frock clamp is utilized to sequentially grind the top surface, the front end surface, the front inclined plane and the back inclined plane of the coating scraper ceramic coating, thereby enabling a ceramic cutting edge line deviation of a grinded coating scraper to be not more than 0.015mm/m,the cutting edge parallelism deviation to be not more than 0.01mm/mm, and the surface roughness to be Ra0.246 to satisfy the use precision requirements. In the invention, the coating scraper ceramic coating is grinded on a small-sized surface grinding machine through the frock clamp, thereby avoiding grinding with a large precision grinding machine, and therefore, the precision grinding frock clamp has little investment and low production cost.

A transparent barrier sheet comprising on one side of a substrate sheet at least one transparent inorganic layer and at least one transparent organic layer, wherein an outermost layer of the inorganic layer and the organic layer exhibits a surface roughness Ra of not more than 5 nm and the transparent inorganic layer exhibits a thickness of 20 nm to 500 nm, and the transparent barrier sheet meeting the requirement:

0.5≦d2/d1≦10

wherein d1 is a thickness of the inorganic layer and d2 is a thickness of the organic layer.

The invention discloses preparation of an aramid fiber modifying solution and relates to a surface modifying method of aramid fibers. The aramid fiber modifying solution comprises a pretreatment solution and a re-treatment solution, wherein the pretreatment solution is prepared from 180-200 parts of toluene, 16-18 parts of polymethylene polyphenyl polyisocyanate and 3-6 parts of epoxy resin; the re-treatment solution is prepared from 180-220 parts of deionized water, 8-12 parts of A-stage resorcinol-formaldehyde resin, 8-16 parts of 25%-30% ammonium hydroxide, 160-200 parts of butadiene-vinylpyridine latex, 5-10 parts of 36%-40% of a formaldehyde solution, 0-5 parts of tannic acid and 0-5 parts of tea polyphenol. By treating the aramid fibers with the solution, surface roughness of the aramid fibers can be improved effectively, quantity of active groups on the surface of the aramid fibers is increased, and adhesiveness of the aramid fibers with different kinds of rubber is improved.

The invention discloses a grinding process for optical sapphire crystal basal piece. It includes steps of coarse grind, precise grind and polishing. The one time qualification rate is more than 98.5%, the surface coarse is less than 0.3 nanometer, the flatness rate is less than 5 micrometer, the flatness is minus and plus 0.025 millimeters, the thickness size difference is less than plus and minus 0.025 millimeters.

The invention discloses a finish turning method for the external circular surface of a thin-walled gear ring in the technical field of thin-walled gear ring machining. The method specifically comprises the following steps that S1, a main fixture body is clamped in an inner hole of the thin-walled gear ring workpiece to make the thin-walled gear ring workpiece be fixed and transmit cutting force ina fixture; S2, after the thin-walled gear ring workpiece is fixed, a turning tool with the tool cutting edge angle of 75-90 degrees is selected to conduct external circular rough turning on the thin-walled gear ring workpiece; S3, then the thin-walled gear ring workpiece is subjected to external circular finish turning, and a turning tool with the front rake angle of 15-30 degrees is selected forcutting; S4, after finish turning is completed, a cutting part is polished. According to the method, by adopting a reasonable cutting amount and cutting tools, cutting heat of the workpiece in the cutting process is eliminated; meanwhile, by adopting the cutting tool with the large tool cutting edge angle, the radial stress of the workpiece can be reduced, the cutting vibration and the deformation of the workpiece are reduced accordingly, and the dimensional precision, tooth profile precision and surface roughness of the external circular surface of the workpiece can be improved.

The invention discloses a coating process of the outer surface of a sculpture. The coating process comprises the following steps that 1, the sculpture is integrally polished for several times by a 40-50-mesh sand tray until the surface roughness of the sculpture is 30-50 microns, and a treatment layer is uniformly smeared on the surface of the sculpture; 2, primer is sprayed by a high-pressure airless spraying device within 6 hours after the treatment layer is smeared, wherein the thickness of the primer is controlled to 30-40 microns, and the drying treatment is conducted for 8-12 hours after the spraying is completed; 3, defects of the surface, generated after the primer is sprayed, are remedied with unsaturated polyester resin putty, and after completely cured, the surface is polished with abrasive paper to be smooth; 4, intermediate paint is sprayed by the high-pressure airless spraying device, wherein the thickness of the intermediate paint is controlled to 30-40 microns, and the drying treatment is conducted for 8-12 hours after the spraying is completed; and 5, finish is sprayed by the high-pressure airless spraying device, wherein the thickness of the finish is controlled to 30-40 microns. The coating process has the advantages that the adhesive ability, the water resistance, the chemicals resistance, the light resistance and the temperature resistance of a paint film can be improved remarkably, and the paint film has a self-cleaning property and weather resistance.

The invention discloses a treatment machine for increasing surface roughness of plastic foam particles. The treatment machine is mainly characterized in that a driving shaft of an electric device is fixedly connected with a flying bar in a material bin inner cavity; at least two sets of sawtooth-shaped blades are distributed and connected on a frame of the flying bar in the axial direction; the edges of blade teeth of the opposite sawtooth-shaped blades of on the flying bar are annularly sleeved with a sleeve with sieve holes distributed in the outer circle with the distance a=2 mm to 6 mm, and the sleeve is connected with a material bin; a feeding hole is formed in the other end of the material bin and corresponds to a feeding end opening of the flying bar. Under the action of outside suction force in the work process, the blade teeth on the sawtooth-shaped blades on the flying bar rotate, the surfaces of the plastic foam particles adsorbed on the surface of an inner cavity of the sleeve are scratched and pulled, roughness is increased, and then the plastic foam particles are sucked into the material bin through the sieve holes in the surface of the inner cavity of the sleeve through extrusion to be discharged out. The plastic foam particles with the rough surfaces are in mixed and coated connection through cement and pulverized fuel ash, the adhesive force is high, mixtures are evenly stirred, the material of a forming die shell is even and dense, connecting strength is high, and machining quality of die shell production is improved.

The invention relates to a protection method for a graphite part of a vacuum furnace. The protection method comprises the following steps of 1) polishing and grinding the graphite part to enable the surface roughness of the graphite part to be below 0.5 mm; 2) putting the polished and ground graphite part into a CVD furnace; and 3) setting the temperature and the pressure in the CVD furnace, introducing methane and nitrogen or introducing boron trichloride, ammonia gas and inert gas into the CVD furnace, and finally depositing a pyrolytic graphite coating or a pyrolytic boron nitride coating on the surface of the graphite part. According to the protection method, by coating the surface of the graphite part with the pyrolytic graphite coating or the pyrolytic boron nitride coating, on one hand, graphite dust can be prevented from volatilizing to pollute a reaction chamber, so that the purity of the product is improved; and on the other hand, the graphite part can be protected, the service life of the graphite part is prolonged, and enterprise cost is reduced.

A disc-shaped original glass plate for producing a stamper for roughening a substrate of an optical recording medium, containing a circular 21st area within a radius D1 from the center of the original glass plate, a circular 22nd area within a radius D2 (>D1) from the center, a ring-shaped 23rd area obtained by omitting the 21st area from the 22nd area, and a ring-shaped 24th area obtained by omitting the 22nd area from an entire the major surface of the glass plate, wherein the 21st and 24th areas are lustrous, and the 23rd area is roughened. The surface roughness of the 23rd area is such that the arithmetic average roughness Ra is 0.05 to 2.0 μm and the ten-point average roughness Rz is 0.1 to 5.0 μm.

The purpose of the present invention is to provide molded foam which renders severer weight reduction, better surface properties, and rib designs possible when molding thin-wall objects for electricalappliances including cellphones and personal computer housings or as vehicular members including automotive fenders, door panels, backdoor panels, garnishes, pillars, and spoilers. The injection-molded foam of the present invention is formed from a resin composition comprising: (A) a polycarbonate resin; (B) a thermoplastic polyester resin; (C) a polyester/polyether copolymer; and (D) a blowing agent. The injection-molded foam has surface roughness which satisfies 0.1 Mum <(arithmetic average roughness, Ra)<9 Mum, 1 Mum<(maximum height, Ry)<90 Mum, and 1 Mum<(10-point average roughness, Rz)<70 Mum.

This invention discloses one automatic temperature control high property ceramics heating element process method, which comprises the following steps: using purified and super thin aluminum powder as base and adding part of nanometer ALN powder and small adhesive agent to protect roller cylinder grinding of nitrogen gas and girding the ceramics crump on its surface to make the work surface roughness for 0.1 to 0.2 micrometer; matching the processed ceramics crump and metal cover; then connecting resistance Wu wires and molybdenum filament with power and automatic temperature control device.

Provided are a sliding instrument that has low frictional resistance with a snow surface, an ice surface, or a water surface and provides excellent sliding properties, and a method for manufacturing the same. The sliding instrument for sliding on snow, ice, or water includes a sliding surface (1) that contacts a snow surface, an ice surface, or a water surface, wherein the sliding surface (1) hasa surface roughness Ra of not more than 1.0 [mu]m. The method for manufacturing the sliding instrument comprises a polishing step of polishing the sliding surface (1) using a slurry of a polishing composition containing abrasive grains, to provide the sliding surface (1) with a surface roughness Ra of not more than 1.0 [mu]m.

A method for producing a mirror (10) from a titanium-based material by using the technique of ultraprecision machining. The mirror produced using this method has both a shape accuracy and a surface roughness in the submicrometer region. The mirror (10) is made from a titanium-based material having a shape accuracy and a surface roughness in the submicrometer region, whose basic shape (11) has a has a reflecting surface (12) having a surface roughness of less than 60 nm, and in particular of less than 30 nm.

The present invention provides a wafer processing tape that is capable of excellently delivering a label part from a rolled state by suppressing blocking of the label part with the back surface of thewafer processing tape when the wafer processing tape that has been precut is stored in a rolled state. The present invention is characterized by having: a long release film (11); an adhesive film (12) that has a label part (12a) having a prescribed shape corresponding to a ring frame R provided on a first surface 11a of the release film (11), and peripheral parts (12b) surrounding the outside ofthe label part (12a); and support members (13) that are provided on both ends of the release film (11) in a short direction and on a second surface (11b) opposed to the first surface (11a) on which the adhesive film (12) is provided, wherein the arithmetic surface roughness Ra of the adhesive film (12) on the side not in contact with the release film (11) is equal to or less than 0.3 [Mu]m, and the thickness of each of the support members (13) is 30-150 [Mu]m.

In order to solve the problem that 6061 mirror aluminum is difficult to produce in the prior art, the invention provides a preparation method of a single-sided high-glossiness 6061-H22 state aluminum alloy mirror plate, and the single-sided high-glossiness 6061-H22 state aluminum alloy mirror plate is prepared through reasonable raw material preparation, fusion casting, high-temperature homogenization heat treatment, hot rolling and cold rolling, mirror rolling, cleaning and incomplete recrystallization annealing. The contents of Mg, Si, Fe and the like in raw materials are controlled within a narrow range, the gas content and compound inclusions in casting are strictly limited, and the size of a second phase left in a cast ingot is sufficiently refined in cooperation with high-temperature homogenization heat treatment; secondly, the high-glossiness surface after mirror rolling is guaranteed by controlling roller grinding parameters and rolling oil parameters in mirror rolling, and the reduction rate, the rolling speed and the like in the rolling technology; and finally, cleaning and incomplete recrystallization annealing are carried out, so that the 6061 mirror aluminum alloy plate strip with the surface glossiness of a single face of the coiled material reaching 820 GU or above, the transverse reflectivity reaching 80% or above, the longitudinal reflectivity reaching 83% or above, the diffuse reflection rate lower than 10% and the surface roughness Ra 0.02 [mu]m is obtained.

The invention discloses a method for manufacturing a highly rust-resistant air conditioner bracket, which comprises the following steps: material selection: selecting 304 stainless steel plate as a blank; heat treatment: performing solution treatment on the selected steel plate, keeping the temperature at 1050° C. for 15 minutes, and then Rapid cooling; then hot-rolling and pressing the steel plate to obtain a rough bracket, which is rapidly cooled after removing the oxide scale; machining; finishing the rough bracket to obtain the complete shape of the bracket; making oxide layer: the prepared bracket Put it in the acid solution, soak it for more than 30 minutes, and finally take it out and rinse it; surface treatment: discharge treatment on the surface of the oxide layer to increase the surface roughness; anti-rust surface treatment: spray or roll on the surface of the oxide layer to resist corrosion paint, and spray polyurethane varnish three times on the surface of the anti-rust paint. The invention can effectively improve the anti-rust performance of the bracket and prolong the service life of the product.

A display panel comprises a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first transparent conductive layer and a first alignment layer. The first transparent conductive layer includes a first surface and has at least a first notch, the first alignment layer includes a first part and a second part, the first part is disposed in the first notch, the second part is disposed on the first surface, and the surface roughness of the first part of the first alignment layer is greater than that of the second part. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. A display device having the display panel is also disclosed.

The invention discloses a preparation method of an air filtering material. The method comprises the following steps: pretreatment of fiber, preparation of hydrophobic fiber, preparation of modified attapulgite, and preparation and spraying of spraying materials. The method has the advantages that the surface of polyester fiber is modified through an alkaline solution and acrylic ester, the structure of the polyester fiber is destroyed, the cohesive force among the polyester fiber is reduced, and the surface roughness and specific surface area of the polyester fiber are improved, so that the adsorption capacity of the polyester fiber is enhanced, meanwhile the polyester fiber has excellent hydrophobic capacity, the polyester fiber is prevented from absorbing moisture and sticking together,and the filtering capacity of modified polyester fiber is enhanced; the method further combines activated carbon and attapulgite, the characteristic that the adsorption property of activated carbon ishigher than that of attapulgite is utilized, and the situation that a large quantity of activated carbon particles are in contact with one another to form a conducting loop to reduce the electrostatic adsorption capacity of the polyester fiber is further avoided, so that the adsorption capacity to particulate pollutant and peculiar smell in the air by the polyester fiber is improved.