196results about How to "High wear resistance" patented technology

A valve train for an internal combustion engine is comprised of a lubricating oil, and a camshaft which is made of an iron-based material and comprises a cam lobe and a camshaft journal. The camshaft slidingly moves on a counterpart thereof through the lubricating oil. A hard carbon film is formed on at least one of a sliding portion of the camshaft and the counterpart made of an iron-based material. A hydrogen amount of the hard carbon film is 10 atomic percent or less.

The invention includes fabrics that have been dyed or finished with a dye that contains a conductive mixture of conductive organic materials, inorganic materials, metals, metal oxides, carbon and carbon nanotubes or combinations or mixtures thereof. The dye is used to finish a fabric such that it is conductive. These fabrics are useful in shielding law enforcement personnel from energy weapons discharge and in providing an electrostatic medium for personnel that work with static sensitive products. The fabrics, when appropriately grounded, dissipate the emitted charge and transmit it to ground. Additionally, the apparel has high wear resistance and is both thermally and electrically conductive yet is comfortable to wear.

The present invention provides a grease composition capable of effectively preventing a rolling surface of a bearing from having hydrogen brittleness-caused peeling, a grease-enclosed bearing in which the grease composition is enclosed, and a rotation-transmitting apparatus with a built-in one-way clutch in which the grease composition is enclosed at a sliding portion. The grease composition contains a base grease consisting of a base oil and a thickener; and an additive added to the base grease. The grease composition prevents a frictional wear surface of the sliding portion or a newly generated surface consisting of iron or the like exposed owing to wear from being peeled owing to hydrogen brittleness. The additive contains a bismuth-based additive or a magnesium-based additive. The bismuth-based additive consists of at least one of inorganic bismuth and organic bismuth not containing a sulfur component. The magnesium-based additive consists of at least one of inorganic magnesium and organic magnesium. The grease-enclosed bearing encloses the above-described grease composition.

A method of forming a high wear resistance coating on a substrate having a low coefficient of thermal expansion is described. The method may include providing the low CTE substrate, where a surface of the substrate includes a plurality of protrusions raised above the surface. A high wear resistance layer is formed on a top portion of protrusions, where the layer is not contiguous between adjacent protrusions on the substrate. Also, a wafer support component to support a wafer during, for example, a photolithography or inspection process. The wafer support component includes a substrate that has a material with a low coefficient of thermal expansion, where the substrate has a surface with a plurality of protrusions raised about the surface. A high wear resistance layer is formed on a top surface of each of the protrusions.

Boron nitride nanotubes (BNNTs), boron nitride nanoparticles (BNNPs), carbon nanotubes (CNTs), graphites, or combinations, are incorporated into matrices of polymer, ceramic or metals. Fibers, yarns, and woven or nonwoven mats of BNNTs are used as toughening layers in penetration resistant materials to maximize energy absorption and/or high hardness layers to rebound or deform penetrators. They can be also used as reinforcing inclusions combining with other polymer matrices to create composite layers like typical reinforcing fibers such as Kevlar®, Spectra®, ceramics and metals. Enhanced wear resistance and usage time are achieved by adding boron nitride nanomaterials, increasing hardness and toughness. Such materials can be used in high temperature environments since the oxidation temperature of BNNTs exceeds 800° C. in air. Boron nitride based composites are useful as strong structural materials for anti-micrometeorite layers for spacecraft and space suits, ultra strong tethers, protective gear, vehicles, helmets, shields and safety suits/helmets for industry.

The method provided by the invention comprises the following steps: a machine body, a walking part, a lifting part, a reciprocating pounding part and the like are arranged; a pounding guide element and the like are arranged on a pounding guide device; pounding heads are arranged at two ends of the pounding guide element, so that a power pounding element drives the pounding guide element; the reciprocating pounding part is arranged on the lifting part; the lifting part is arranged on the machine body; and the walking part drives the machine body to move ahead and retreats so as not to turn the machine body to excavate and drop materials forward and backward. Equipment provided by the invention comprises the machine body, the walking part, the lifting part, the reciprocating pounding part and the like; the reciprocating pounding part comprises the pounding guide device, the pounding driving device and the like; the pounding heads are both arranged at two ends of the pounding guide element; the pounding driving device comprises the power pounding element and the like; the power pounding element drives the pounding guide element to move in a reciprocating mode; the pounding guide element drives the pounding heads to pound; the reciprocating pounding part is arranged on the lifting part; the lifting part is arranged on the machine body; the walking part drives the machine body to move ahead and retreat so as not to turn the machine body to excavate and drop materials forward and backward.

The present invention has as its object to stably produce a high strength electrical steel sheet and a processed part of the same which is high in strength and has wear resistant and is superior in magnetic flux density and core loss without greatly changing the cold rollability and production processes from those of conventional electrical steel sheet and provides a high strength electrical steel sheet characterized by containing, by mass %, C: 0.06% or less, Si: 0.2 to 6.5%, Mn: 0.05 to 3.0%, P: 0.30% or less, S or Se: 0.040% or less, Al: 2.50% or less, Cu: 0.6 to 8.0%, N: 0.0400% or less, and a balance of Fe and unavoidable impurities and containing in the steel a metal phase composed of Cu of a size of 0.1 μm or less. The method of production of the same comprises holding in a temperature range of 300° C. to 720° C. for 5 seconds or more for heat treatment.

The present invention is directed to a rubber composition comprising a diene elastomer, a reinforcing white filler, and a (white filler/elastomer) coupling agent, which is bifunctional and which can be bonded to the elastomer by means of a function X. The coupling agent X function is an ester function of an unsaturated α-β acid bearing a carbonyl group on its γ position and having the general formula (X):

where R, R¹ and R² may be the same or different, where R is a monovalent hydrocarbon radical, and where R¹ and R² may be a hydrogen atom or a monovalent hydrocarbon radical. The rubber composition of the present invention is useful for the manufacture of tires or semi-finished products for tires, such as tire treads.

The invention relates to a coating comprising a number of layered structures, each such layered structure comprising—a first layer comprising a diamond like nanocomposite layer, said first layer comprising carbon, hydrogen, oxygen and silicon; a second layer comprising a diamond like carbon layer. The number of layered structure is higher than 4 and is preferably between 10 and 100. The invention further relates to a method to deposit such a coating.

The invention relates to a chisel holder for a cutting machine, road milling machine, surface miner, or the like, having a chisel receptacle, which comprises an insertion opening, and having a chiselsupporting surface, wherein at least one wear protection element is arranged in an area associated with the chisel supporting surface. In order to bring about effective wear protection in such a chisel holder at low cost, it is provided that the at least one wear protection element is designed as a weld and is arranged at least in areas in at least one opening.

The invention discloses a preparation method for a composite crosslinked absorbent for waste water treatment, which comprises: firstly, preparing solution of biological macromolecular material; secondly, heating to dissolve polyvinyl alcohol (PVA), and uniformly mixing the solution of PVA, the solution of biological macromolecular material and mineral powder; thirdly, adding the mixed solution into solution of boric acid to perform immobilized crosslinking, and after crosslinking is finished, washing and drying an immobilized material to obtain the composite crosslinked adsorbent. The method has the advantages of simple and quick process, low cost, economy, applicability and the like. The crosslinked absorbent contains rich active groups and porous structures and has high stability, good absorbing effect and wide application range. The crosslinked absorbent can be widely used for treating waste water.

A rubber composition comprises as a rubber component (A) an aromatic vinyl compound-conjugated diene compound copolymer polymerized with a lithium-based polymerization initiator and having a polystyrene-conversion weight average molecular weight of 3.0×10⁵-3.0×10⁶ as measured by a gel permeation chromatography and (B) 10-200 parts by mass, based on 100 parts by mass of the copolymer (A), of a hydrogenated styrene-butadiene copolymer having a polystyrene-conversion weight average molecular weight of 5.0×10³-2.0×10⁵ as measured by a gel permeation chromatography and a bound styrene content of 10-70 mass % in which 25-50% of double bonds in butadiene portion is hydrogenated.

The invention discloses a cobalt-base Fischer-Tropsch synthesis catalyst and a preparation method and application thereof. The catalyst comprises a mesoporous carbon carrier and an active component cobalt, wherein the active component cobalt is confined in the mesoporous carbon carrier. The catalyst has specific surface area of 220-400 m<2>/ g and particle diameter of 50-150 um. The preparation method employs phenolic resin solution as an organic precursor, and then a sol-gel method is employed to embed the active component Co into the mesoporous carbon carrier. The catalyst prepared by the invention before usage only requires introduction of inert gas into at a certain temperature without hydrogen reduction, so as to obtain the catalyst containing cobalt. The catalyst of the invention has the advantages of high reduction degree, high dispersity, good stability, uniform size of active component, controllable carrier aperture and high selectivity on diesel, and can meet the requirements of a slurry bed reactor on the wear resistance of the catalyst.

The invention relates to a nanometer coating used for preventing icing of a high tension transmission line and application thereof. The nanometer coating is prepared through the following steps: weighing, by weight, 10 to 15% of a high-molecular resin, 20 to 25% of titanium dioxide, 30 to 35% of silica, 3 to 5% of diamond-like carbon and 19 to 32% of a solvent; then compounding and uniformly mixing the high-molecular resin, titanium dioxide, silica and diamond-like carbon and carrying out grinding to obtain a particle with a particle size of 1 to 100 nm; and finally, adding the raw materials uniformly mixed and ground into the solvent and carrying out full stirring so as to obtain the nanometer coating used for preventing icing of the high tension transmission line. The coating provided by the invention allows the high tension transmission line to have the advantages of fouling resistance, icing resistance, high wear resistance and the like, provides a long-acting, high-efficiency, convenient, economic and feasible approach for active resistance to ice and snow disasters, realizes delaying and prevention of icing of super-cooled droplets on the high tension transmission line and enables no icing or little icing to be generated on the high tension transmission line in snowy weather.

A surface-covered CBN sintered body tool includes a base material formed with a cubic boron nitride (CBN) sintered body and a surface covering film covering a surface of the base material, and has a nega-land exposing the CBN sintered body in at least a portion thereof and a flank having the surface covering film formed thereon. With this, the surface-covered CBN sintered body tool having high defect resistance and wear resistance can be provided. The surface covering film preferably includes a nitride or a carbonitride of a compound including at least one element selected from the group consisting of Ti, Cr, Zr, and V and at least one element selected from the group consisting of Al, Si and B, or a nitride or a carbonitride of Ti.

The invention provides a micro-spherical SiO2-Al2O3 based noble metal catalyst and a preparation method thereof. The preparation method comprises the following steps: dispersing silica sol into a silica sol system, so that silica sol is mixed with alumina sol and a coagulant to form formed sol, forming the sol by virtue of an atomizing dispersion-oil column formation method, and carrying out aging, washing, drying and roasting to obtain micro-spherical SiO2-Al2O3; and loading noble metal active components with the micro-spherical SiO2-Al2O3 as a carrier, obtain the micro-spherical SiO2-Al2O3 based noble metal catalyst. The catalyst has the characteristics that the specific surface area and the pore volume are large, the dispersity of active components is high, the abrasion index is relatively low, and the wear resistance is high. The catalyst is mainly applied to a hydrogenation process of preparing hydrogen peroxide by using a fluidized bed anthraquinone method and has relatively high catalytic activity, selectivity and stability. The catalyst can be also applied to reaction processes such as hydrorefining, selective hydrogenation and selective oxidation in petrochemical engineering and fine chemical engineering production.

A carrier develops latent electrostatic images in corporation with a toner and one particle of the carrier includes a magnetic particle, and a coating layer covering the magnetic particle. The coating layer includes a crosslinked condensation product of a composition containing (i) an N-alkoxyalkylated polyamide and (ii) at least one resin that is reactive with the alkoxyalkylated polyamide and includes a silicone having a silanol group and/or a hydrolyzable group.

The invention discloses a high-wear-resistant wood-plastic composite floor and a preparation method thereof. The high-wear-resistant wood-plastic composite floor sequentially comprises a wear-resistant layer, a solid wood face and a wood-plastic composite base material, wherein the wear-resistant layer is wear-resistant aluminium oxide paper. The high-wear-resistant wood-plastic composite floor disclosed by the invention has the characteristics of high wear resistance, environmental protection, economization, uneasy deformation, insect prevention and moth proofing and the like.

The invention specifically relates to a method for retaining vertical impact of an impacting mechanism and a vertical-lift impact-cutting digger implementing the method, belonging to the field of machinery, especially to the field of mining. The digger comprises a body, the impacting mechanism and a vertical lift mechanism, wherein the impacting mechanism comprises a guiding member and an impacting head, the vertical lift mechanism comprises a vertical lift driving unit, a lifting and moving part, a supporting seat and the like, the lifting and moving part is movably connected with the supporting seat, the supporting seat is connected with the body, the impacting mechanism is arranged on the lifting and moving part, the vertical lift driving unit drives the lifting and moving part to vertically move up and down, and the lifting and moving part drives the impacting mechanism to vertically rise and fall. The digger provided by the invention has the advantages of a long service life, a small amount of maintenance, high work efficiency, shortened body length and applicability to a complex usage occasion.

An electrophotographic photosensitive body which has both good image stability and wear resistance under high temperature and high humidity conditions can be obtained by using a novel polycarbonate resin, which contains a structural unit represented by the general formula (I) below and having a long-chain unsaturated hydrocarbon group having a double bond, as a binder resin for a charge transport layer of an electrophotographic photosensitive body. In the formula (I), R₁-R₄ preferably represent a hydrogen atom or a methyl group, respectively; a represents a number of 7-20; and R₆ represents a hydrogen atom, a methyl group or a phenyl group. Particularly preferably, the structural unit represented by the general formula (I) below is derived from 1,1-bis(4-hydroxy-3-methylphenyl)-10-undecene or 1,1-bis(4-hydroxyphenyl)-10-undecene.

The invention discloses a powder metallurgical gear. The powder metallurgical gear is prepared from water atomization iron powder, copper powder, molybdenum powder, vanadium powder, nickel powder, yttrium powder, aluminum powder, magnesium powder, cobalt powder, lead powder, steel slag powder, iron-melted furnace slag powder, ferroalloy slag powder, modified tree ash powder, graphite powder, amino resin, polyether modified silicone, hydroxypropyl methyl cellulose, zinc stearate, polyethylene glycol, ethylene bisstearamide, stearic acid, carbon fibers, glass fibers, boron nitride, epoxypropoxy propyl trimethoxysilane, silicon dioxide, manganese sulfide, acrylate, an inhibitor, a binder, an enhancer, a cutting agent, a lubricant, a coupling agent and a dispersing agent. According to the powder metallurgical gear, by means of specific composition proportion, the overall density is uniform, the compactness is high, the elongation and reduction of cross section are high, the abrasion resistance, strength and hardness are good, the material utilization rate is high, and the materials are suitable for rapidly producing high-performance gears on large scale.