55results about How to "Improve the wear resistance coefficient" patented technology

The invention relates to the field of track beams, in particular to a straddle type single-track double-box rectangular steel-concrete composite track beam structure. The straddle type single-track double-box rectangular steel-concrete composite track beam structure comprises two steel-concrete track main beams parallel to each other; the two steel-concrete track main beams are connected through crossbeams below and a low plain longitudinal; each steel-concrete track main beam comprises a steel beam structure with a box-type cross section and a concrete cuboid structure with a rectangular cross section; each concrete cuboid structure is positioned above the corresponding steel beam structure and is connected with the steel beam structure through shear nails; the span of each steel-concrete track main beam is 30-80 meters; the cross beams are I beams and are in bolt connection with cross beam connecting plates of the steel-concrete track main beams; the low plain longitudinal is a diamond truss, and plain main rod piece parts are respectively connected with the steel-concrete track main beams and the cross beams. The straddle type single-track double-box rectangular steel-concrete composite track beam structure can be suitable for building double-line large-span track beams, and the double-line large-span track beams are large in span, high in transverse stiffness and high in transverse stress performance structurally.

The invention discloses a temperature stage type calendaring film forming method of a nonwoven filter cloth. The method has the beneficial effects of stable finish of a formed film, high wearing coefficient, good regeneration effect and high filter precision. The method comprises the following steps in sequence: carrying out first calendaring treatment, with the melting temperature T1 of surface fibers of a non-woven as the temperature of calendaring rolls; carrying out second calendaring treatment, with the transition point temperature T2 as the temperature of the calendaring rolls; carrying out third calendaring treatment, with the softening point temperature T3 of the surface fibers of the non-woven as the temperature of the calendaring rolls, wherein the transition point temperature T2 is equal to (T1+T3)/2+/-5 DEG C.

The invention discloses a composite material for a carbon brush used for an electric machine and a preparation method thereof. The composite material is composed of modified tungsten dioxide, nanometer graphite powder, epoxy resin and a filler in a weight ratio of (20-32): (12-18): (5-14): (2-9), wherein the modified tungsten dioxide comprises, by weight, 5-8 parts of tungsten dioxide, 18-24 partsof a dopamine solution, 2-8 parts of foamy copper and 1-3 parts of steel fibers. Compared with the prior art, the composite material and the preparation method thereof in the invention have the following advantages: through the modification treatment of tungsten dioxide, the usage amount of tungsten dioxide and the cost of materials used for the carbon brush are reduced; the modified tungsten dioxide is loaded with the steel fibers and carbon fibers, so the wear resistance of tungsten dioxide is improved, and the weight of tungsten dioxide is reduced; and since the carbon brush is prepared from the modified tungsten dioxide, the wear resistance coefficient of the carbon brush is improved and the service life of the carbon brush is prolonged.

The invention discloses a lifting platform for automobile repair. The lifting platform comprises two sloping benches arranged in a mirroring manner, a lifting plate located in the middles of the topsof the sloping benches, and hydraulic jacks for impelling the lifting plate to lift. The structural strength of the lifting plate can be improved, the situation that the lifting plate is broken duringuse due to continuous pressing and clamping force generated by the automobile weight on the lifting plate is prevented, by the action of U-shaped ribs, the surface roughness of the lifting plate is increased, the wearing coefficients of the lifting plate is raised, the abrasion to the lifting plate by vehicle movement when the lifting plate is in use is lowered, the lifting plate can be kept in abalanced and stable state all the time during lifting, and the rock abrasion borne by the lifting plate is reduced, thus the service life of the lifting plate is prolonged, and the service life of the lifting platform for the automobile repair is further prolonged.

The invention relates to the field of forging material, in particular to a lead screw-nut wear-resistant special material. The invention provides the lead screw-nut wear-resistant special material which takes common grey cast iron as base material; then, before pouring, alloying elements and non-ferrous metal (including 10% of Cu element, 10% of ductile iron element, 6% of Cr steel element and 2% of Ni element) are added into the base material; and the original pouring technology is adjusted, the proportional alloy is added into cast iron after the cast iron is melted, and pouring is carried out after the cast iron is fully melted.

The invention belongs to the field of floor technology, and specifically relates to an antistatic epoxy resin floor; the specific technical solution is: an antistatic wear-resistant floor, including a concrete layer placed at the bottom and an epoxy resin layer laid on the top of the concrete layer High-permeability primer layer, multiple embedded parts are arranged in the concrete layer, the bottom of the embedded part is provided with two feet, and the top of the embedded part is provided with a lock. The parts are fixed in the epoxy high-permeability primer layer, the top of the epoxy high-permeability primer layer is laid with an oily conductive putty layer, the top of the oily conductive putty layer is coated with an antistatic primer layer, and the top of the antistatic primer layer Coated with an antistatic intermediate coating, the top of the antistatic intermediate coating is coated with an antistatic top coating, and the top of the antistatic top coating is coated with an aggregate wear-resistant layer. The surface of the present invention is worn to a certain extent, It will not damage the conductive tape, and it can be repaired only by recoating the surface of the floor to realize repeated use.

The invention discloses a wear-resistant coated wire with stable structure and a preparation method thereof. The wear-resistant coated wire comprises a wire matrix and a coating. The coating comprises nanometer silica, nanometer calcium carbonate, vinyl acetate, vinyl butyl acetate, polyvinyl alcohol, epoxypropane, polyethylene wax, cellulose ether, fatty alcohol polyoxyethylene ether, acrylate, polydimethylsiloxane, polyethylether, rare earth, attapulgite, montmorillonite, silicon carbide, polyamide, high-carbon ferro-chrome powder and PAN-based carbon fiber. The wear-resistant coated wire with stable structure disclosed in the invention has the advantages of good wear resistance, adhesion, etc.

The invention relates to a novel polymer composite material and a preparation method thereof. The raw materials of the novel polymer composite material comprise, by weight, 6-8 parts of calcium stearate, 5-7 parts of zinc stearate, 3-6 parts of TBHQ, 4-8 parts of octadecanoic acid, 2-6 parts of papain, 6-10 parts of silicone oil, 5-9 parts of cocoanut fatty acid diethanolamide, 2-5 parts of PPD, 3-10 parts of fatty alcohol polyoxyethylene ether and 8-10 parts of deionized water. The novel polymer composite material has the advantages of easiness in obtaining, low cost, environmental protection, greenness, reduced frictional performance, reduced resistance, easiness in absorption, acceleration of the lubrication speed, improvement of the wear resistance, increased wetness, increase of the surface tension, improved toughness, fast emulsification speed and good anti-oxidation effect and prolongation of the service life.

The invention discloses a production method of a novel composite powder material containing superfine components. The production method of the novel composite powder material containing superfine components comprises the following concrete steps of (1) mixing glycerinum, fatty acid, ethylene oxide, hexadecanol, triethylamine alcohol and water, feeding into a high-temperature stirrer after preliminary mixing, heating for stirring, and obtaining a grinding agent; (2) feeding cobalt, titanium, tungsten carbide, chromium, copper and steel into a high-energy ball-milling machine for grinding, adding a dispersing agent and the grinding agent obtained in the step 1 during the grinding process, preventing the agglomeration of particles, changing the grinding environment, utilizing a cloth dust collector for recovering after finishing grinding, and obtaining metal composite powder; and (3) feeding the metal composite powder obtained in the step 2 into a reaction stirring tank, and stirring at high temperature. The hardness of superfine powder during use is increased, the crushing resistance is improved, the smoothness of the appearance is further improved due to heavy grinding and the use of the dispersing agent, and the occurrence of the phenomena of breakage and cracks after forming is reduced.

The invention discloses abrasion-resistant environment-friendly corrugated paper, and belongs to the technical field of papermaking. The abrasion-resistant environment-friendly corrugated paper is prepared from the components in parts by weight: 50-60 parts of plant straw, 80-100 parts of waste paper, 10-20 parts of polyvinyl alcohol fibers, 10-15 parts of adipic acid cross-linked starch, 5-8 parts of sodium carbonate, 2-5 parts of a penetrant, 20-30 parts of shell powder, 10-15 parts of a styrene-acrylate copolymer, and 5-10 parts of polyacrylamide. The abrasion-resistant environment-friendlycorrugated paper is corrugated raw paper which is high in abrasion resistance, low in production cost, environmentally friendly and capable of realizing resource utilization of solid waste.

The invention discloses motor cover accommodating equipment and relates to the technical field of motor processing and production. The motor cover accommodating equipment is characterized by comprising a bottom plate, wherein idler wheels are connected to low part of the bottom plate, an accommodating frame is arranged above the bottom plate, an accommodating plate is arranged in the accommodatingframe, the accommodating plate is connected to the accommodating frame through a fixing bench, an accommodating groove is formed in the accommodating plate, a locating rod is arranged beside the accommodating groove, and a through hole is formed in the accommodating plate. The motor cover accommodating equipment disclosed by the invention has the advantages of reasonable structure, convenience inoperation and convenience in use.

The invention provides wooden bench leg transport equipment, and relates to the technical field of processing and production of home improvement products. The wooden bench leg transport equipment is characterized by comprising a baseplate, and moving wheels are arranged under the baseplate; the baseplate is provided with support rods, and each support rod is provided with a placement rod which isprovided with a placement plate which is provided with a locating rod; the baseplate is provided with grooves, and each placement plate is provided with a through hole; and the locating rods are arranged in the through holes. The wooden bench leg transport equipment has the advantages of rational structure, easy operation and convenient use.