33results about How to "Extended overhaul period" patented technology

The invention relates to a metal/ceramic nano complex self-repairing additive, which comprises metal nano micropowder and nano natural ore powder as main material, detergent, catalyst, antioxidant, and solvent, and can be used in lube, grease and ultrasonic medium. The advantages of this invention include: it can form rapidly high-hardness self-repairing protection layer on a plurality of metal friction surfaces with thickness adjustable to optimize gap and improve surface physical and chemical property, and has wide application in friction dual parts.

The nanometer vibration-reducing and noise-reducing self repairing material is prepared with nanometer level metal powder and natural ore powder as main material and through adding several kinds of supplementary material and certain technological process, and is added into lubricating oil or ultrasonic medium as high performance repair material. The present invention features that the high performance repair material can create high hardness self-repairing lubricating film fast on the surface of metal friction pairs to regulate the interval of the friction pair, reduce friction coefficient, raise bearing capacity, leveling the friction surface, reduce vibration and noise caused by the unbalance, friction and damage of the moving machine parts, and prolong the service life of the machine parts. The present invention may be used widely in improving performance of mechanical friction parts.

The present invention is one design scheme of fast active control system for the vane tip interval of aviation engine, and features the mechanical executing mechanism. The mechanical executing mechanism is designed by referring variable cross section tailing spout controlling technology for aviation engine and applied in the fast active control system of turbine vane tip interval. Compared with the control system designed based on traditional heat responding method, the fast active control system of turbine vane tip interval has the advantages of fast response speed, high economical efficiency, asymmetrical deformation, high reliability and long service life. The fast active control system of turbine vane tip interval consists of five parts: turbine casing, regulating sheet and sealing sheet, regulating unit, connecting section and control unit.

The present invention provides an antiwear energy-saving agent containing refined mineral oil, zinc dialkyl dithiophosphate and deactivator for lubricating oil, it possesses excellent functions of reducing friction, reducing wear, resisting rust, resisting corrosion and resisting oxidation, and has strong cleaning dispersing power and good extreme pressure resistance and long-acting lubricating property and excellent compatibility with lubricant. This invention also provides its preparation method and application to lubricating oil and soaking field.

The invention discloses a Ni-P alloy nano-powder lubricant additive prepared from nickel and phosphorus recycled from electroless nickel plating waste liquid, and a using method thereof in different friction occasions, wherein Ni-P powder is subjected to in-situ dispersion and recovered from electroless nickel plating waste liquid, dispersed again and then prepared into the lubricant additive through certain steps, together with metal chemical friction modifiers, detergent-dispersant, oxygen corrosion-resistant agents, auxiliary performance regulator, stabilizer and base oil. The lubricant additive has the advantages of good suspension stability, capability of greatly reducing equipment friction and wear, greatly reducing the frequency of equipment maintenance and parts replacement and prolonging equipment lifespan and overhaul time limit, as well as good effect of saving energy and protecting environment. The lubricant additive can be widely used in gasoline/diesel internal combustion engines, general fluid machinery, mechanical chemical sealing pieces, transmission gearboxes and other occasions, can realize the recycling of nickel and phosphorus in the electroless nickel plating waste liquid with high added value in order to change pollutants into useful things, and realizes the coordination and unification of economic, environmental and social benefits.

The invention relates to a precipitation hardening stainless steel material with laser alloying surface manufacturing technology and its application. It is made up precipitation hardening stainless steel basal body and alloying coating which is processed by alloying technology for paint contains W, Co, Cr, Ni alloy powder. The processed precipitation hardening stainless steel remains original better comprehension mechanical property, and has high surface hardness. Thus it has wide application range. The 17-4PH stainless steel is fit for making turbine blade.

The invention pertains to oil production pumping equipment in particular to submersible downhole pumps with rod drives to simultaneously and separately lift reservoir fluids to the surface from two reservoirs of a single well. The downhole pump assembly comprises a drive, upper and lower oil-well sucker-rod pumps each connected with its own rod string. In addition to this the unit is equipped with the body, crossbar and joint hollow rod string the latter being attached to the upper part of the crossbar to the bottom of which the rod strings of the upper and lower oil-well sucker-rod pumps are fixed, moreover, the rod string of the upper oil-well sucker-rod pump being made hollow and interconnected with the hollow plunger of the upper oil-well sucker-rod pump and the channel in the crossbar with the joint hollow rod string, and the rod string of the lower oil-well sucker-rod pump is installed between the cylinder of the upper oil-well sucker-rod pump and the downhole pump assembly body, moreover, the upper oil-well sucker-rod pump being offset from the longitudinal downhole pump assembly body axis. Coaxiality of the lower oil-well sucker-rod pump is achieved through the use of the rod crossover shoe, S-shaped rod and non-central pipe sub. The lower plunger pump rod has a shaped cross-section. As a result a standard pumping unit and two oil-well sucker-rod pumps are used and both enhanced reliability of the downhole pump assembly and increased overhaul life of its operation are achieved.

The invention relates to a surface rolling method for vent valves, which comprises the following steps of: fixing a vent valve on the rotary disk of a rolling device, pressing rollers on the surface of the vent valve, and applying pressure on the valve surface by the rollers during rotation process of the vent valve, wherein the pressure application step includes the steps of: aligning the rollers of the rolling device to the inner side of the valve surface, and applying pressure on the valve surface by the rollers in such a process of increasing pressure, holding pressure, increasing pressure, holding pressure,ellipsis, until reaching a maximal pressure; the pressure is generally increased in stepwise; a first groove with a certain depth is formed on the valve surface, and then the rollers are loosened, move to the outer side of the first groove and further roll the valve surface to form a plurality of other grooves; finally, the valve surface with the plurality of grooves provided thereon are processed to remove the margin. According to the invention, the surface hardness of the vent valve can be improved by 80 to 110 HV in comparison with the common rolling method, thus improving the service life of the vent valve by 1 to 3 times.

A lubricating oil containing additive is characterized by that its additive includes powdered magnesium hydroxysilicate, microtubular magnesium hydroxysilicate, flaky magnesium hydroxy silicate, superfine staple of magnesium hydroxy silicate, microtubular aluminium hydroxysilicate, superfine staple of aluminium oxide and silicon oxide, and flaky aluminium silicate.

The invention discloses a contraposition linear reciprocating pump driving mechanism. The contraposition linear reciprocating pump driving mechanism comprises a slide block mechanism, a crankshaft andan eccentric slide block, wherein the slide block mechanism is composed of a slide block, two connection rods and two pistons, and the central axis of the two pistons is orthogonal to that of the slide block; a crank throw of the crankshaft is sleeved with the eccentric slide block, the slide block concentrically sleeves the eccentric slide block, and the pistons are coaxially inserted into two symmetric slide ways on a reciprocating pump rack; the eccentric slide block rotates on the axis of the slide block around the crank throw while following the crank throw to rotate around the crankshaft, in the entire rotation process, the center axis of the eccentric slide block is maintained parallel to the center axis of the crank throw all the time, so that the movement trail of the eccentric slide block in the horizontal direction is approximately linear, through the eccentric slide block, the slide block is driven to conduct linear movement, and then the two pistons conduct reciprocatinglinear movement in the two symmetric slide ways of the reciprocating pump respectively.

The invention relates to a process for preparing environmental friendly diesel fuel additive comprising, placing alcohol isopropylicum into reaction kettle, mixing with 93# gasoline, after 1.5-2.5 hrs, continuing charging in phenylmethanol and mixing, obtaining solution A, placing plane kerosene (D40) into another reaction kettle, mixing with cyclohexanone to obtain solution B, after 8-14 hours, mixing solution an and B, filtering 2-5 times.

The invention relates to a coating, in particular to a heat-absorption anticorrosive energy-saving coating, a preparation method thereof and a use method of the coating. The coating comprises, by weight, 10-30 parts of boron nitride, 20-40 parts of corundum, 20-40 parts of brown aluminum oxide, 10-20 parts of talcum powder, 5-10 parts of graphene, 10-30 parts of iron oxide red, 10-30 parts of ironoxide black and water glass solvents. The preparation method of the coating includes the steps: placing the materials into a container according to proportion; uniformly mixing the materials; gradually and slowly adding triple water glass solvents; stirring mixture for 4-6 minutes when the water glass solvents are added. The use method of the coating includes the steps: cleaning up coated surfaces; coating or spraying the surface with 0.1-0.3 millimeters of the coating. The coating is good in heat-absorption effect and high in anticorrosive function, the service life of a boiler can be prolonged, and heat conduction is facilitated.

The invention relates to a production technology of an environment-friendly energy-saving lubricant additive. The production technology comprises the following processes: firstly, putting isopropanolin a reaction kettle, mixing with 93# gasoline, putting advanced air compressor oil in the reaction kettle in 1.5- 2.5 hours, then continuing to put benzyl alcohol in the reaction kettle, and mixing to obtain an A solution; a B solution arranging another reaction kettle, putting aviation kerosene (D40) into the reaction kettle, finally mixing with cyclohexanone, mixing the A solution and the B solution and filtering for 2-5 times in 8-14 hours to obtain the environment-friendly energy-saving lubricant additive. After the environment-friendly energy-saving lubricant additive involved in the invention is added, paraffin pyrolysis is promoted, and the distillation range, condensation point and viscosity of lubricating oil are all in downtrend; therefore, the flow and atomization of fuel oil are promoted; engine power obviously increases; a locomotive starts quickly; noise is low; an oil injection head is not prone to blockage; and the service lives of an engine and machine parts can be effectively prolonged.

The invention relates to a production process of an environment-friendly energy-saving lubricating oil additive. The production process comprises the following steps: isopropanol is put into a reaction kettle, then 93# gasoline is mixed with the isopropanol, and after 1.5-2.5 h, an advanced air compressor oil is put into the reaction kettle, and then benzyl alcohol is put into the reaction kettlefor mixing, so as to obtain a solution A; an aviation kerosene (D40) is put into another reaction kettle, and then cyclohexanone is mixed with the aviation kerosene, and after 8-14 h, a solution B isobtained; and the solution A and the solution B are mixed, and the mixture is filtered for 2-5 times, so that the environment-friendly energy-saving lubricating oil additive is prepared. After the environment-friendly energy-saving lubricating oil additive is added into lubricating oil, pyrolysis of the paraffin is facilitated, thereby making the distillation range, condensation point and viscosity of the lubricating oil all show a downward trend, so that flowing and atomization of the fuel are facilitated, and power of an engine is obviously increased, therefore, the motor vehicle starts fast, noise is small, an injector head is not easily blocked, and the service life of the engine and machine parts can be effectively prolonged.