70results about How to "Good for wear protection" patented technology

The present disclosure relates to greases containing metal sulfonate thickeners. In one example the thickener may be a calcium sulfonate thickener. In other examples grease may contain a combination of a metal sulfonate thickener and another thickener, such as a metal complex soap grease, detergent, or non-soap thickener. The grease may be formulated to meet specific performance criteria relevant to lubrication of a roller cone drill bit in downhole conditions. The disclosure also relates to a roller cone drill bit containing a grease of the disclosure.

The invention discloses a lubricating oil composition for a turbocharging direct injection engine. The composition is prepared from, by weight, 75-85% of base oil, 7-12% of engine oil complexing agent, 4-12% of viscosity index improver, 0.3-1.0% of friction improver, 0.3-1.0% of high-temperature ashless antioxidant, 0.3-2% of rubber seal improver and 0.1-0.5% of pour point reducer. According to the lubricating oil composition, the content of calcium, phosphorus and molybdenum in finished lubricating oil is reasonably controlled, so that the obtained product has excellent high-temperature oxidation resistance and piston cleanliness, high grease controllability and remarkable anti-wear protective property; the occurrence rate of low-speed preignition of the turbocharging direct injection engine can be effectively reduced, the fuel economy of vehicles can be improved, and the service life of the engine can be prolonged.

The invention relates to the technical field of steel piece surface treatment, and in particular relates to a preparation method of a high-temperature wear-resistant coating on the surface of a steel piece. According to the preparation method, a composite coating of a Fe-Al intermetallic compound and a little Al2O3 is obtained through liquid dip aluminum plating and subsequent compound dispersion treatment. The process flow of the preparation method comprises pretreatment (alkali cleaning, acid pickling and assisted plating), dip aluminum plating and dispersion treatment, wherein the dip aluminum plating is carried out for 1-10 minutes in liquid aluminum at a temperature ranging from 720 DEG C to 800 DEG C; and compound dispersion annealing which is carried out in a protective atmosphere or in vacuum at a temperature ranging from 850 DEG C to 1100 DEG C for 1-5 hours, and in air at a temperature ranging from 400 DEG C to 600 DEG C for 20-30 minutes. The temperature and the time of the dispersion treatment are adjusted so that composite wear-resistant coatings containing the intermetallic compound and a little Al2O3 and are different in thickness can be obtained. The preparation method has the characteristics of simple and convenient process, low cost, high coating binding force, excellent high-temperature wear resistance and the like, and thus can be widely applied to surface strengthening of high-temperature wear resisting steel pieces.

The invention discloses a long-life air compressor oil composition. The long-life air compressor oil composition comprises the following components in percentage by weight: 0.6-1.5% of an ashless composite additive, 0.3%-1.0% of an antioxidant, 0.1%-0.5% of an extreme pressure anti-wear agent, and 0.002% to 0.005% of an anti-foaming agent, with the balance being base oil, wherein the base oil comprises a mixture of III-type hydrogenated base oil and alkyl naphthalene base oil or polyether base oil. The air compressor oil provided by the invention has excellent high-temperature detergency and oxidation resistance, and can effectively avoid the generation of oil sludge and carbon deposit; excellent wear resistance and hydrolytic stability are achieved, and excellent wear resistance protection is provided for the air compressor; the excellent heat conduction efficiency can help to reduce the temperature and oil temperature of the compressor; and the oil change period is long and can reach6000 hours or above. In addition, compared with known long-life air compressor oil, the air compressor oil has the advantages of being low in cost, simple in preparation method, easy to popularize and apply on a large scale and the like.

A method of activating the surface of an aluminum-based substrate. This method includes cleaning the substrate surface, and operating a plasma spraying device such that a air plasma jet produced by the device is accelerated toward the surface so that it removes or decomposes any remaining oxides and other surface contaminants. In one form, the surface being treated forms part of a cylinder bore of an internal combustion engine block. In a particular form where a protective coating is subsequently being applied to the substrate, a sequential series of plasma spraying devices may be used such that a first—preferably simpler—device is used to perform activation or pretreatment operations, while a second—and more comprehensive—device may be used to deposit the protective layer on the pretreated surface.

The present invention includes methods and apparatus for making a tubular composite container having paperboard body plies and an unsupported polymer film liner adhered thereto. The polymer film liner is comprised of, in order, a first sealant layer, a second adhesive layer, a third polyamide layer, a fourth layer comprising an ethylene/vinyl alcohol copolymer, a fifth polyamide layer, a sixth adhesive layer, a seventh high density polyethylene layer and an eighth high density polyethylene layer. The resulting liner and the paperboard body plies are wound about the tube forming mandrel and adhered together so as to produce a lined tubular composite container.

The invention relates to components made of steel, more particularly outer joint parts and inner joint parts of constant velocity joints, and to a process of heat treating such components made of steel. The heat treatment operation includes the process stages of nitriding, induction surface layer hardening and tempering, which processes follow one another. As a result of the nitriding operation, the joint parts are provided with a surface layer (15) including nitrides and a diffusion layer (18) positioned thereunderneath. The subsequent induction hardening process causes the diffusion layer (18) to be hardened, so that it comprises good supporting characteristics for supporting the surface layer (15) positioned above same.

The invention provides diesel lubricant oil, a preparation method thereof, and an application thereof in diesel engines, wherein the diesel lubricant oil comprises, by weight, 38-70% of synthetic basic oil A, 10-25% of synthetic basic oil B, 10-25% of synthetic basic oil C, 0.1-6% of a cleaning agent and 0.1-6% of an antioxidant.

The present invention provides an additive composition comprising (a) at least one ash-containing phosphorus compound prepared by a primary or secondary alcohol or mixtures thereof, and (b) a salt of at least one hydrocarbylamine and at least one hydrocarbyl acid phosphate. Further, the present invention provides a lubricating composition comprising (a) at least one ash-containing phosphorus compound prepared by a primary or secondary alcohol or mixtures thereof, and (b) a salt of at least one hydrocarbylamine and at least one hydrocarbyl acid phosphate, and methods of use thereof.

A ball joint with a ball pin and a steel ball pin with a joint ball. The ball joint and ball pin are suitable for use when, for example, solid-on-solid friction predominates under high static pre-loading or high operational loads and with small joint movements. A portion of the surface of the ball pin has surface layer hardening in order to increase a fatigue strength of the ball pin. The ball pin and the ball joint, on portion of the ball pin without the any surface layer hardened, includes a nitrided layer as wear protection. The ball pin and the ball joint provide an advantageous combination of high fatigue strength, good corrosion protection and high wear-resistance. The nitrided layer of ball joints, previously only regarded as improving corrosion protection, also functions as a wear protection. Thus, these ball pins overcome the mutual exclusion between surface layer hardening and nitriding.

The invention discloses a charging device being convenient to use. The charging device comprises a charging device body. A USB placing slot is formed in the surface of the charging device body. Light-emitting strips are arranged at the two sides of the USB paying-off slot. A first groove is formed in the back of the charging device body; and a micro cooling fan is arranged in the first groove. Second grooves are formed in the upper ends and the lower ends of the two sides of the charging device body; clamping plates are arranged in the second grooves; the clamping plates and the second groovesare connected by tension springs; and rotating rings are arranged between the tensions springs and the clamping plates. Anti-skid holding sleeves are arranged between the second grooves at the two sides of the charging device body. A USB wiring port and a charging port are formed in the front side end surface of the charging device body; and protection covers are arranged outside the USB wiring port and the charging port. According to the invention, a mobile phone can be fixed with the charging device based on needs when being charged, so that the user can use the mobile phone conveniently; and after charging completion, the USB data cable can be stored in the USB placing slot, so that the charging device can be carried conveniently and is not easy to lose.

The invention relates to a high-temperature-resistant inorganic composite adhesive and a preparation method thereof and belongs to the technical field of adhesive materials. The high-temperature-resistant inorganic composite adhesive is prepared from, by weight, 10-20 parts of aluminum hydroxide, 3-8 parts of zirconium sol, 0.2-0.5 part of rare earth oxide, 15-20 parts of palygorskite powder, 15-30 parts of silicate, 5-10 parts of an active filling agent, 3-10 parts of hollow microspheres and 30-55 parts of water. The adhesive is simple in formula and scientific in design, has the advantages of being excellent in corrosion resistance, high temperature resistance, abrasion resistance, short in curing time and the like, and is safe, saves energy and is environmentally friendly and wide in application range. Meanwhile, the invention provides the simple and practical preparation method of the high-temperature-resistant inorganic composite adhesive.

The present invention relates to a centrifugal separator (1) comprising a rotor (2) which is rotatable around an axis of rotation (R), the rotor (2) comprising a separation chamber (10) with an inlet (7, 9, 11) for a liquid mixture containing solid particles, at least one liquid outlet (18, 19, 20) for a separated liquid from the liquid mixture, and a solids outlet (22, 26, 27) for the separated solid particles, wherein a screw conveyor (3) is arranged to rotate inside the rotor (2) around the axis of rotation (R), at a different speed than the rotor (2), the screw conveyor (3) having at least one conveyor flight (3c) for transporting the separated solid particles in the separation chamber (10) towards and out of the solids outlet (22), wherein the conveyor flight (3c) is provided with wear resistant elements (23) arranged along its edge and the wear resistant elements (23); are spaced apart with an interspace (23a) between mutually adjacent wear resistant elements (23).

The purpose of the present invention is to provide organometallic salt compositions that are useful as lubricant additives and/or in lubricant additive compositions to reduce friction and wear, and also have improved solubility in all four types of hydrocarbon base oils (Groups I-IV) at a variety of concentrations and under a variety of conditions. The organometallic salt composition is derived from at least one long chain monocarboxylic acid and a single metal in combination with at least one short or medium branched-chain monocarboxylic acid. The compositions are particularly useful in combination with activated complexes comprising a first metal component, a second metal component and particles comprising the first metal component.

The invention relates to a piston guiding element (62), particularly a piston guiding element (62) for a cylinder piston pump (10), the piston guiding element has one side that is in a butt joint with an inner lateral area (56) of the pump housing (14) and the other side that is capable of being movably supported at an outer curved surface area (52) of a piston (16) in order that the piston guiding element can guide the piston (16) capable of moving inside the pump housing (14) and provided with a low pressure side sealing unit (54) that is arranged on the outer curved surface area (52). According to the piston guiding element, the piston guiding element (62) covers the low pressure-sided sealing element (54) on its side that is facing towards the inner lateral area (56) of the pump housing (14) with a section.

A ball joint with a ball pin and a steel ball pin with a joint ball. The ball joint and ball pin are suitable for use when solid-on-solid friction predominates, for example under high static pre-loading or under high operational loads and with small joint movements. At least in a bearing contact area, between the joint ball and the bearing shell, does not include any nitrided layer. The surface of the ball pin has an oxide layer, provided as wear protection, at least in the bearing contact area of the joint ball. The oxide layer in the ball joints, previously regarded (as part of the nitriding treatment) as only improving corrosion protection functions as a form of wear protection. Thus, the mutual exclusion between increasing the fatigue strength (by surface layer hardening) and improving the wear resistance (by nitriding/oxidation) is overcome with such ball pins.

The invention discloses a method for centrifugal production of yellow wine employing horizontal screw-disk combination, and belongs to the technical field of brewing. According to the method, solid-liquid separation on fermented mash of the yellow wine is carried out by adopting a combination of a horizontal screw centrifuge and a disc centrifuge; the squeezing process of the fermented mash of the yellow wine is regulated and controlled by adjusting the rotating speeds, differential speeds, separation factors, feeding flows and the like of the centrifuges; and the wine yield, total solid matter and amino acid nitrogen of the obtained yellow wine are evaluated. The fermented mash of the yellow wine is processed by adopting the horizontal screw centrifuge and the disk centrifuge, so that the wine yield of the yellow wine is obviously increased; the total solid matter in the obtained yellow wine is reduced; the amino acid nitrogen is increased; the quality of the yellow wine is improved; meanwhile, the method disclosed by the invention can be applied to industrial production; the squeezing process of the yellow wine is continuously operated; a lot of labor force and the space occupied by equipment are saved; and the method has great significance for technical progress of an enterprise and improvement of economic benefits.