85results about How to "Reduce abrasive wear" patented technology

The invention is an assembly of abutting vacuum insulated panels configured and arranged to form a retention chamber with a slip surface providing a low kinetic coefficient of friction interposed between the panels within the abutment areas.

The present invention relates to a centrifugal grinding mill comprising a vertical axis of revolution (1), a nutating axis (2) intersecting axis (1) at a point of nutation symmetry (3), a grinding chamber (4) symmetrical about axis (2) connecting with feed passage (5) at its upper end and having discharge openings (6) of a screening element (26) located within a plane area aligned normal to, symmetrical with, and intersected by the axis (2), and adjacent the plane containing the maximum diameter of the grinding chamber (4).

In a transmission chain having link plates with convex edges for sliding contact with a guide surface, the plates are asymmetric in shape so that the distance from a line connecting the centers of the connecting holes and the convex edge is greatest at a position other than at the midpoint between the connecting holes. A pivoting action of the link plates takes place as they slide over a guide surface, changing the abutment point.

The invention discloses a wear-resistant, high-strength and light-weight poly (ether-ether-ketone) composite material. The poly (ether-ether-ketone) composite material comprises the following raw materials in parts by weight: 71-83 parts by weight of poly (ether-ether-ketone) resin, 5-10 parts by weight of suspension polytetrafluoroethylene resin, 7-12 parts by weight of carbon fiber powder and 5-7 parts by weight of aluminum oxide powder, as well as a silane coupling agent with the adding quantity of 0.8-1.5% of the weight of the aluminum oxide powder. The poly (ether-ether-ketone) composite material disclosed by the invention has the performance characteristics of wear resistance, high strength, self-lubrication, light weight, corrosion resistance and the like, is used for replacing a hard alloy and a metal framework to assemble a novel sliding bearing, effectively reduces the cost and weight of a bearing product (the weight is reduced by 30%) under the situation of meeting the requirements for service life, and can obviously reduce the power consumption and noise of a pump and achieve the purposes of saving energy and reducing consumption.

An open top body of an off-highway haulage vehicle is described for severe hauling applications such as hauling of high density, abrasive material. The body has a floor divided into at least two sections with first and second sections angled at different inclinations. The second section extends to the rear edge of the floor and is at an angle of inclination greater than the first section. The opposing sidewalls of the body extend vertically from the floor are flared or taper along their length such that the body floor is wider at the rear of the body than it is at the front. The body includes a tailgate pivotally attached to the sidewalls for rotation between closed and opened positions in response to the bumping of the load by the body.

The invention provides a method for forming micro-texture in a composite mode on the inner surface of a cylinder sleeve through laser. The method comprises the following steps: step (1), a femtosecond laser device is used for processing a needed microcosmic shape on the inner surface of the cylinder sleeve; and step (2), a nanosecond laser device is used for strengthening the area of the microcosmic shape processed in the step (1) through laser shock waves. Under the condition of dry friction, micro-concave surface texture can be used as a storage device for storing wear particles to reduce abrasive wear and furrows on the friction surface, and therefore the wear rate is lowered. The laser shock waves can eliminate residual tension after the micro-texture is formed on the inner surface of the cylinder sleeve, and therefore deep residual compressive stress is formed, grain refinement is enabled to be more uniform, the hardness, the abrasive resistance and the anti-fatigue performance of the cylinder sleeve are improved, and the service life of the cylinder sleeve is prolonged. The invention further provides a device for forming the micro-texture in the composite mode on the inner surface of the cylinder sleeve through the laser at the same time.

A bag house air filtration system with minimal recirculation uses new inlet airflow patterns and cleaning processes. Inlet air enters the bag house. An input plenum changes the velocity profile. Dirty inlet air is split into two plenums, and then passed through guide vanes. A clean air plenum contains a series of individual compartments with a pre-set number of filter bags that are effectively cleaned during a single cleaning cycle. Each individual compartment has a door or louver mounted above the bag openings that is opened and closed during the cleaning cycle. An automatic control system continuously senses bag house pressure drop and activates the cycle when needed. The doors open and close in a pre-set pattern to drop the dust cakes from the bags and restore air flow to normal pressures. Closing a door mounted above the bags creates a reversal of pressure that removes the dust cake.

A device for the continuous filtration of material blends, in particular for separating impurities from plastic melts. A housing has a hollow cylindrical filter disposed inside. An inside chamber is disposed inside the filter. An annular chamber is defined by the outer surface of the filter and an inside wall of the housing. A cleaning device removes the impurities retained on the filter by a motor driving about an axis coupled to pivot the filter inside the housing. The cleaning device has at least one wiper for removing in the radial direction impurities retained on the filter. A conveying device transports off the impurities removed from the filter by the wiper. The motor-driven filter and the conveying device are driven separately of each other.

The present invention is related to the separator (dust chamber) for separating solid particles from vapour-gas mixture, particularly to the structure of the dust chamber belonging amongst installation of the plant processing the fossil fuels or materials containing organic matter. The dust chamber (1) for separating solid particles from vapour-gas mixture comprises main body (2) with inner refractory lining (7) arranged to the inner surface of said main body, first and second stage cyclones (3, 4), lamella compensators (18, 19), dust removal conduits (5, 15) and inlet conduit (13) of the vapour-gas mixture into the first cyclone (3). The main body (2) of the dust chamber (1) is manufactured in all height from the cylinder of equal diameter and first and second stage cyclones (3, 4) are placed outside of the main body (2) of the dust chamber (1). For the refractory lining of the main body (2) of the dust chamber (1) and first and second stage cyclones (3, 4) the non-porous and wear proof material, for example concrete, is used.

Dental composition, product and process using a silicon containing abrasion resistant material. The dental products formed are abrasion resistant and self-lubricating across their entire cross sections. Dental compositions useful for forming dental products in accordance with the invention preferably includes an ethylenically unsaturated silane. The composition is formed into a dental prosthesis, such as an artificial tooth, inlay, onlay, facing, crown or bridge.

The invention relates to a multi-structure different-interval bionic surface combined cast-iron guide rail and a regeneration method thereof. First bionic coupling elements and second bionic coupling elements are made on mild wear areas and a severe wear area of the guide rail working face; the first bionic coupling elements are strip-shaped or net-shaped bionic coupling elements, and intervals of the first bionic coupling elements in the mild wear areas are larger than those of the first bionic coupling elements in the severe wear area; the second bionic coupling elements are pit-shaped coupling elements and are distributed among the first bionic coupling elements. According to the multi-structure different-interval bionic surface combined cast-iron guide rail and the regeneration method thereof, according to the rigidity or stress distribution situations of the areas with different wear degrees, two double-coupling-element bionic surfaces with changeable intervals are set, a multi-structure different-interval bionic surface combination with different anti-wear performances is formed, and the surface of which the rigidity or the stress is distributed evenly is obtained, so that the effect that the overall anti-wear performance of the surface is uniform and stable for a long time is achieved. In addition, by means of the interaction between the two coupling elements and a machine body, the wear resistance of the sliding guide rail is further improved.

The invention discloses a gear with surface texture tooth surfaces. Uniformly arranged surface texture mark forms are arranged on each tooth surface of the gear. The surface texture mark forms are strip-type convex mark forms or strip-type concave mark forms which are parallel to gear engagement lines. Or, the surface texture mark forms are provided with grid-like convex mark forms or grid-like concave mark forms which are parallel and vertical to gear engagement lines. A surface texture is machined on a tooth surface, so that the gear with surface texture tooth surfaces can accommodate abrasive particles, and reduce the abrasive particle abrasion between the tooth surfaces; the gear with the surface texture tooth surfaces can store lubricating oil, take away friction heat generated between the tooth surfaces, reduce the tooth surface temperature, and prevent tooth surface agglutination from invalidation; and according to a partial film elastic fluid lubrication theory, the gear with surface texture tooth surfaces is favorable for forming an elastic fluid hydrodynamic lubricating oil film to improve the lubrication state. By the surface texture tooth surfaces, the wearing resistance of the gear can be improved, and the service life of the gear can be prolonged.

The copper cladding normally applied to the surfaces of a submerged arc welding wire for preventing weld gun contact tip abrasive wear is replaced with a solid lubricant. This eliminates copper contamination of the weld from the copper cladding while preserving the useful life of the contact tip.

A socket for a high-current plug-in connection is provided, which includes a contact sleeve and a hollow cylindrical contacting system. The contacting system includes a plurality of elongated contact lamellae, is situated in an inner area of the contact sleeve, and is supported with at least a portion of its outer wall on the inner wall. The contact lamellae extend between a first collar and a second collar of the contacting system. The socket includes a contact lamella, in an area between the first collar and second collar, having an arm, via which the contact lamella is additionally connected to a collar of the contacting system in a supporting manner.

The invention discloses a turbocharger sealing ring subjected to laser surface texturing and a machining method. After laser surface texturing, arc-shaped micro-concave cavities different in diameter and depth are formed in the left end face, the right end face and the inner circle surface of the turbocharger sealing ring and are distributed densely in a well-arranged manner. The machining method of the turbocharger sealing ring comprises the following steps that a surface fluid lubrication theoretical model of the turbocharger sealing ring is built to determine the diameters, depths and area occupancy rates of the arc-shaped micro-concave cavities in the left end face, the right end face and the inner circle surface with the optimal lubrication friction reduction effect through numerical calculation; and then a diode pumping Nd:YAG laser device is selected, under a laser machining graphic software interface, the geometrical parameters and distribution state of the arc-shaped micro-concave cavities are input, and laser surface texturing machining is carried out on the left end face, the right end face and the inner circle surface of the turbocharger sealing ring through a single pulse same-point interval repeated machining technology.

The invention is a kind of gliding block universal-joint spindle automatic lubricating device. The invention belongs to mechanical manufacturing field, especially refers to a kind of automatic lubricating device for middle board roller copper gliding block universal-joint. The device is made up of rollers, palm end, tiger's mouth, gliding block, universal-joint spindle, oil adding hole. The character lies in: there sets an automatic oil supplying device on the universal-joint spindle, the oil supplying device includes an oil pipe, a fixing clamp ring, a plunger pump, a plunger pump post rod, template, tile mold, the plunger pump is fixed with the universal-joint spindle with the fixing clamp ring, and rotates with the universal-joint spindle, from the plunger pump to the oil adding hole the invention uses copper oil pipe to connects them and fixes them on the universal-joint spindle. The template is fixed with the universal-joint spindle tile sides with screws. The structure is simple, and compact.

The invention relates to a surface thermal treatment method of a screw. The surface thermal treatment method comprises the following steps of: (1), carrying out degreasing, acid activating and deionized water-washing treatment onto a screw workpiece in sequence; (2), drying the screw pretreated in the step (2), and removing the residual water on the surface; (3), carrying out gas nitrogen-sulfur-chrome leakage treatment on the screw, placing the workpiece to an electric heating furnace with a gas mixture of gas complex of sulfur chrome and nitrogen gas to carry out nitrogen-sulfur-chrome leakage treatment; (4), carrying out sand blasting or shot blasting treatment on the screw workpiece, and removing a surface loose layer; (5), carrying out oxidation treatment on the screw workpiece, placing the workpiece to the electric heating furnace with liquid oxide salt, and immersing to oxide salt molten liquid; and (6), repeating the steps (3)-(5) by once or twice or more, forming a super-hard surface tissue on the surface of the wokpiece to complete the surface treatment of the screw workpiece. According to the surface thermal treatment method of the screw, a layer of nitrogen-sulfur-chrome-iron compound with a thickness of 15 microns-45 microns is formed on the surface of the screw, so that the surface hardness, the abrasion resistance and the corrosion resistance of the screw are improved.

The copper cladding normally applied to the surfaces of a submerged arc welding wire for preventing weld gun contact tip abrasive wear is replaced with a solid lubricant. This eliminates copper contamination of the weld from the copper cladding while preserving the useful life of the contact tip.

In the continuous casting of round or polygonal billet and bloom formats, use is made of moulds the mould cavity of which comprises a copper tube (3) which is intensively cooled by means of water-circulation cooling. In order to increase the cooling capacity on the one hand and the dimensional stability of the mould cavity (4) on the other hand, and also extend the total service life of the copper tube (3), it is proposed to provide the copper tube (3) with a supporting shell (12) or supporting plates over the entire circumference at the tube outer lateral surface (5). For the cooling of the copper tube (3), cooling ducts (6) for guiding the cooling water are arranged on the copper tube (3) or on the supporting shell (12). The cooling ducts (6) are distributed over the entire circumference at the tube outer lateral surface (5) and extend substantially over the entire mould length.

The invention provides a nickel / aluminum oxide catalyst microsphere and a preparation method thereof. The method comprises the steps that a nickel source, an addition agent raw material and an aluminum source solution are mixed, then a sodium silicate or tetraethyl orthosilicate solution is added as a silicon source, a precipitant is added for adjusting the pH, and a coprecipitation reaction is conducted to obtain a precipitate; the precipitate is subjected to a hydrothermal reaction, and after the reaction is completed, the precipitate is washed and dried to obtain a catalyst precursor; the solid content of precursor slurry is adjusted, then spraying granulation is conducted, and after calcination, the Ni / Al2O3 catalyst microsphere is obtained. The Ni / Al2O3 catalyst microsphere with highwear resistance is obtained, abrasion and loss of a catalyst in the high-temperature high-pressure methanation process of a fluidized bed can be reduced, the production cost is lowered, the catalyticactivity and stability of the catalyst are improved at the same time, and the yield of methane is increased. The catalyst has the advantages that the treatment amount is high, the catalyst is quicklyformed, the reaction process is simple and easy to control, and the catalyst has good application prospects.