93results about How to "Good abrasiveness" patented technology

The invention opened a high strength and conductance aldary material which includes: Cr 0.05%-0.10wt%; Zr 0.05%-0.50%; Mg 0.05-0.20wt%; (Ce+Y)<=0.20%; The residue is Cu. The process is : water quench for 1h in 900-960DEG C->30%-45% of cold-drawing deformation->aging treatment for 0.5-4h in 440-520 ->formed by cold-drawing. The strength can reach above 550-600MPa and the specific conductivity can keep above 80% IACS, and the life is improved to 3-5 times, the sintering can reach 550DEG C; the slip is less than 10% in the 300DEG C, the elongation percentage is above 5%, also the alloy has the performance of resistance to elevated temperatures and stand wear and tear.

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 formula and its technique of non-rubber wound formed clutch piece as the structure of composite material of cashew oil resin slurry and winding fiber textile, which is characterized by the following: reducing the consumption of petroleum because not synthesizing rubber and solvent petroleum; saving the manufacturing cost of the product greatly; releasing the pressure of petroleum inlet to certain extent; adopting pure cashew oil as raw material without phenol; improving the elasticity, flexibility and mechanic strength; making each property reach the technical demand of GB5764-1998 'automobile clutch piece' national standard regulation and industrial mechanic amianthine friction disk GB11834-2000.

The present invention relates to a cobalt catalyst. It is characterized by that said catalyst is formed from 30-95wt% of cobalt, 0.5-30wt% of aluminium and 0-40wt% of at least one transition metal M selected from subgroups of IB, IIB, IIIB, IVB, VIB, VIIB and VIIIB of periodic table of chemical elements. The cobalt is existed by mainly adopting metal state form of amorphous or nano crystal grains. When said catalyst is used for making Fischer-Tropsch synthesis reaction, as compared with skeleton cobalt it passes higher acitivity and selectivity.

The invention relates to a formula and a production process of engine oil. The engine oil comprises base oil and additives, wherein the base oil comprises mineral base oil and synthetic base oil; the additives comprise complexing agent OLOA59766, anti-wear and anti-oxidation agent DAN8000, viscosity increaser V112, viscosity increaser V261, pour point reducer P156 and anti-foaming agent T901; and the base oil and the additives are mixed in a certain ratio. The engine oil is a product with ultra-long oil change period and low oil consumption, has good abrasion performance and high bearing capacity, has repair function on the abraded surface, has no pollution to the environment, improves energy conservation and prolongs the service life.

The invention discloses a self-lubricating titanium diboride (TiB2)/diamond-like carbon (DLC) hard coating and a preparing method of the coating. According to the TiB2/DLC hard coating, a bipolar pulse magneto-sputtering deposition technology is adopted to enable a TiB2 ceramic layer and a DLC layer to be periodically overlaid on a base to form the coating; the modulation period of the TiB2/DLC hard coating ranges from 15 nm to 60 nm, and the total thickness of the coating ranges from 1.2 micrometers to 1.4 micrometers; according to the TiB2/DLC hard coating, advantages of TiB2 and advantages of DLC are integrated, the coating has the excellent hardness and lubricating characteristics, the good conducting property is achieved, meanwhile, the pulse magneto-sputtering deposition technology is convenient to operate, the process is simple, the preparing period is short, the cost is low, large-scale industrial production is facilitated, and the coating can be widely applied to fields of cutters, molds, microelectronics, protection and the like.

The invention discloses a two-segment mineral grinding-classification process, it grinds the bauxite and lime in the rod mill, the grinded raw mine pulp is poured into a pump pool. The classified bottom flow after classified by water swirler is grinded in ball grinder, adjusts the best liquid and solid rate with proper alkali liquid, the discharged mine pulp is poured into the same pump pool, and adds in alkali liquid to maintain the solid content at 470-520g/L, and carries on classification to the compound mine pulp in the water swirler, the bottom flow enters the ball grinder to be grinded.

The invention discloses a method for preparing a multiphase coupled WS2/WN solid lubrication film. The multiphase coupled WS2/WN solid lubrication film is formed on the surface of a metal material base body in a magnetron sputtering method. The method for preparing the multiphase coupled WS2/WN solid lubrication film includes the steps that the metal material base body to be processed is preprocessed; the metal material base body is put into a vacuum room, and vacuum pumping is conducted; a low-energy ion source is used for conducting ion bombardment cleaning on the metal material base body; a magnetron sputtering device is used for conducting surface modification on the metal material base body, Ar gas and N2 gas are used as magnetron sputtering and reacting gases, WS2 serves as the target material, a WS2 film layer is deposited on the surface of the metal material base body firstly, then a WS2/WN film composite film layer is deposited, the operation of depositing a WS2 film layer and the operation of depositing a WS2/WN composite film layer are cycled in turns, and 1-10 WS2 film layers are deposited and 1-10 WS2/WN composite film layers are deposited; the metal material base body is put into an acetone solution to be cleaned and then dried, and the dried metal material base body is sealed and stored in a vacuum mode.

The invention discloses a novel stacked screw sludge dewatering machine and a spiral shaft thereof. The lead angle arrangement order of spiral blades of the novel spiral shaft is that the lead angle gradually becomes smaller from a sludge discharge box to a sludge feed box, and the lead angle is gradually reduced from 16-22 degrees to 6-14 degrees; the screw pitch of a shaft body of the spiral shaft is gradually increased along the direction of the sludge discharge box, and from a 1/3 position of the shaft length of the shaft body of the spiral shaft, the diameter of the spiral shaft is gradually increased in a direction from the sludge feed box to the sludge discharge box; and an anti-blocking plate, an included angle between which and the centerline of the shaft body is 20-45 degrees, is arranged on each of two sides of the bottom of the spiral blades, and the height of each anti-blocking plate is not less than 2/3 of the height of the spiral blades. The novel spiral sludge dewatering machine disclosed by the invention can be used for treating slurry which is large in proportion, poor in fluidity, high in viscosity and easy in agglomeration, expands the treating capacity and application range of a stacked screw machine, is more reasonable in screw pitch, has a smoother spiral shaft surface, can effectively reduce the frictional resistance when sludge passes through the spiral shaft, and can prevent sludge shaft blockage; and a hard alloy wear-resistant layer is sprayed on the surface of the spiral shaft, so that the service life of the spiral shaft is prolonged.

The invention provides a ceramic sliding vane used for a rotary vane type compressor and a preparation method thereof. The ceramic sliding vane comprises following components by weight: 90-99.9% of Al2O3 powder, 0.1-10% of Y2O3 powder, 0-1% of SiO2 powder, 0-1% of CeO2 powder, 0-1% of LiO2 powder and 0-1% of MOS2 powder, with the average particle size of the components being not more than 100 nm. The ceramic sliding vane is used for a sealed rotary compressor, and can obtain good wear resistance and reduce wear and friction loss between the ceramic sliding vane and a cooperated air cylinder or a rolling piston of the sealed rotary compressor. The ceramic sliding vane has good heat insulation, and increases the heat exchange efficiency of an air conditioner.

The invention relates to the technical field of protective coating, in particular to vinyl modified fluorocarbon resin, a preparation method thereof, corrosion-resistant coating, a preparation methodof the corrosion-resistant coating and application of the corrosion-resistant coating. The preparation method of the vinyl modified fluorocarbon resin provided by the invention comprises the followingsteps: mixing a vinyl monomer containing a fluorine group, an initiator and a tetrafluoroethylene gas-phase monomer, and carrying out an addition reaction to obtain the vinyl modified fluorocarbon resin. Vinyl monomer resin containing fluorine groups is grafted with tetrafluoroethylene, so that the prepared vinyl modified fluorocarbon resin has excellent strong acid resistance, strong alkali resistance and excellent weather resistance; and the corrosion-resistant coating prepared by taking the vinyl modified fluorocarbon resin as matrix resin has excellent strong acid resistance, strong alkali resistance and weather resistance.

The invention discloses a preparation method for a microspherical nano CaO-based CO2 adsorber for a circulating fluidized bed. The preparation method comprises the following steps: dispersing nano CaCO3 in water to obtain suspension; stirring and mixing the suspension, additives and aluminum sol uniformly; performing spray granulation to obtain microspherical granules with the grain size of 20-200 micrometers; and calcining to obtain the microspherical nano CaO-based CO2 adsorber. The invention also discloses the microspherical nano CaO-based CO2 adsorber prepared by the method, and a method for capturing CO2 by using the microspherical nano CaO-based CO2 adsorber. The method is simple and feasible; the prepared adsorber has high adsorption speed, high adsorption capacity, high adsorption property and high wear resistance, the continuous decarbonization-regeneration circulating process can be realized in a circulating fluidized bed system, the capacity and efficiency of treating CO2 are greatly improved and the cost of removing the CO2 is reduced.

The invention discloses a particle carrier impregnation method. The method comprises steps as follows: (1) contacting impregnation liquid droplets with a particle carrier, wherein the contact time is shorter than 5 s; (2) drying the impregnated particle carrier. According to the method, an impregnation liquid is fully contacted with the particle carrier for a short time (shorter than 5 s) before drying, so that uniform distribution of active components during impregnation can be guaranteed, the particle size distribution and the strength of the impregnated carrier are also guaranteed, and a prepared adsorbent product has the good wear resistance in the reaction process.

The invention discloses a process method for repairing and strengthening a 17-4PH part by laser. The process method comprises the following steps that (1) defects and oil stains on the surface of the 17-4PH part (base material) are removed; (2) (adjusted and optimized) composite laser melting deposition powder is adopted for repairing and strengthening, and a repaired part is obtained; (3) aging heat treatment is performed on the repaired part to further reinforce the performance of a coating; and (4) finish machining is performed. The laser repaired and strengthened 17-4PH part obtained through the process method for repairing and strengthening the 17-4PH part by lasers is high in hardness and excellent in abrasion resistance, the use performance is improved, and the service life is prolonged. Compared with the average hardness 380HV of a 17-4PH homogeneous repair layer, the average hardness of a deposited repair layer using the powder can reach 435HV, and the abrasion resistance is improved by about 20%.

The invention discloses a build up welding layer of a continuous casting roller. The build up welding layer is characterized in that the build up welding layer comprises a stacking bottom layer and a surface wire layer which are stacked on the continuous casting roller; the stacking bottom layer comprises 0.04-0.08 part of C, 1.0-1.5 parts of Mn, 0.4-0.8 part of Si, 16-22 parts of Cr and the balance Fe; and the surface wire layer comprises 0.04-0.08 part of C, 1.3-1.8 parts of Mn, 0.4-0.8 part of Si, 10-15 parts of Cr, 3.5-5 parts of Ni4, 0.5-1 part of Mo and the balance Fe. The build up welding layer of the bottom face of the continuous casting roller is made of ferritic stainless steel alloy, the friction coefficient of the build up welding layer is small, good impact resistance is achieved, multi-layer build up welding can be achieved, no crack is generated, machining is easy, and the build up welding layer is mainly used for repairing of carbon steel pieces or transition layers of other build up materials. The surface wire layer has excellent fatigue resisting performance and good corrosion resisting performance and wear resisting performance, and the build up welding layer simulates 1,000 times of quick heating and cooling circulating tests of the continuous casting roller, can find fatigue cracks and is mainly used for various kinds of steel rollers, hot-rolled work rollers, continuous casting rollers, crane rollers and blast-furnace top bell sealing faces.