152results about How to "Reduce surface wear" patented technology

The invention discloses a composite inner and outer hydraulic pressure forming method for a high-branch height thin-wall three-way pipe, belongs to the technical field of inner high pressure forming and aims to solve the problem that the branch height of the formed three-way pipe is limited in the conventional inner high pressure forming method. The method comprises the following steps of: filling liquid media inside a pipe billet and discharging gases through a supercharger, and moving a left-side punch and a right-side punch forwards to finish pipe end seal, so that inner pressure of the pipe billet is insufficient, and the pipe billet deforms; filling liquid media on the outer side of the pipe billet through holes on a die, wherein outside hydraulic pressure is sealed by a sealing groove on the die and a sealing ring on the punch, so that the pipe billet has plastic deformation under the action of inner pressure, outer pressure, axial feeding of the left and right punches and retreating of the branch punch, and obtaining the high-branch height three-way pipe. Compared with the traditional inner high pressure forming method, the method has the advantages of high branch pipe height and high pipe surface quality, and is particularly suitable for thin-wall three-way pipe forming.

A pulley for a continuously variable transmission and a method of creating an engineered surface on an outer surface of a pulley of a continuously variable transmission, with the engineered surface engaging with a belt or chain of the continuously variable transmission. The method comprising the steps of: determining an actual engineered roughness (Rpk) on the outer surface needed to obtain a predetermined friction between the engineered surface and the belt or chain; and etching microgrooves in at least a portion of the outer surface to create the engineered surface by employing a laser to etch the microgrooves, the microgrooves being formed to a depth that produces the actual engineered roughness (Rpk).

A lubricated surface, a method for reducing wear between moving parts, and lubricants, and lubricant additive concentrates containing a wear reducing agent. The lubricated surface contains a base oil of lubricating viscosity, a hydrocarbon soluble titanium compound, a metal-free friction modifier and an amount of at least one hydrocarbon soluble magnesium compound effective to provide a reduction in surface wear greater than a reduction surface wear for a lubricant composition devoid of the titanium compound, metal-free friction modifier, and magnesium compound. The lubricant composition contains no more than about 800 ppm phosphorus and is devoid of calcium detergents and organic molybdenum compound.

The aircraft landing arrest cable has wear resisting sleeves positioned thereon in spaced relation to each other to thereby hold the cable out of contact with a non-skid landing surface in a lowered position of the cable. Stresses imposed on the cable when engaged by a tail hook suspended from aircraft during landing, are absorbed by the wear resisting sleeves which are held clamped in positions on the cables by fluid adhesive previously injected into the sleeves. The wear resisting sleeves are respectively formed from pivotally connected sleeve sections made of an impact shatter-proof and durable material such as polyurethane with abutting edges held in contact with each other under a clamped condition of the sleeves on the cable, established by the injected adhesive.

The invention belongs to the technical field of chopsticks processing, and particularly discloses equipment for chopsticks shaping. The equipment is characterized by completing the chopstick processing by adopting a milling cutter fixed and chopstick moving mode, realizing the purpose that chopsticks fluctuate up and down with the fluctuation change of the top surface of a shaping mould in the cutting process of a milling cutter by arranging a chopstick clamping mechanism installation seat capable of sliding up and down and matching with the upwards pulling action of an extension spring and the downwards pressing action of a pulley on the shaping mould, further realizing the purpose that surface shapes consistent to the fluctuation shape of the shaping reference surface of the shaping mould are processed on one surfaces of the chopsticks and finally realizing the purpose of shaping the chopsticks. The equipment disclosed by the invention can be used for carrying out automatic shaping by using the shaping mould with the determined shaping reference surface and completing the shaping processing of one surface by pushing for only a few seconds; and compared with manual multi-time turning or polishing shaping, the equipment disclosed by the invention can increase the efficiency by more than ten times and even dozens of times.

The invention relates to a lubricating oil additive containing ultrafine rare-earth powder. The additive consists of the following components in percentage by mass: natural serpentine mineral powder, ultrafine rare-earth powder, surfactant, a dispersing agent, a friction modifier, an auxiliary and base oil, wherein the ultrafine rare-earth powder is one of cerium hydroxide, neodymium oxide and cerium fluoride; the surfactant is borate, span-60 or oleic acid; the dispersing agent is either polyisobutene dibutyl succinimide or high molecular weight polyisobutene dibutyl succinimide; the friction modifier is one of melamine cyanurate, boron nitride and calciuym nitride; the auxiliary comprises 72% of dialkyl disulfo oxygen molybdenum phosphate sulfide, 18% of polymethyl tetradecyl acrylate and 10% of a vinyl-propylene copolymer; and the base oil is 500SN base oil. The additive has obvious corrosion resistance; and after an engine is treated technically by using the self-repairing additive, the dry friction coefficient of the machine is reduced from original 0.05 to be less than 0.005 and therefore the surface abrasion is reduced.

The invention relates to a material, in particular to a wear resistant and wearable die material. The die material is prepared by the following components in percentage by weight: 1.2 to 3.50% of C, 1.0 to 3.5% of Si, 0.5 to 1.2% of Mn, not greater than 0.02% of S, 0.3 to 1.0% of Cu, 0.5 to 5.0% of Cr, 0.5 to 3.0% of Al, and the balance of Fe. A heat-conducting property of the material is superior to that of steel, a mechanical performance is close to that of the steel, and the material is stable in chemical performance, prevent molten aluminum from polluting, and high in wear resistance; because graphite is contained in the material, the die material is excellent in heat-conducting property; the graphite is small, and a tail end of the graphite is circular and passivated, so that the mechanical performance of the material is slightly reduced; proper alloy elements are added to the material, so that a layer of protecting films without being infiltrated by aluminum and the molten aluminum can be formed in an internal chamber after a die is thermally processed during a manufacturing process; once a film of the internal chamber is broken during use, a new protection film can be continuously generated, so that erosion of the molten aluminum can be resisted. According to the die material, a Cr element and carbon form a metal compound, so that the die has an excellent wearable performance; the graphite in the material is a good solid lubricant, so that wear can be reduced, and the wear on surfaces of the aluminum and an aluminum alloy can be reduced.

A slip ring has a slip ring track with a contact area, the contact area containing a plurality of pores or cavities. A lubricant is held within these pores and cavities and is enclosed by a top coating. When a slip ring brush is sliding over the slip ring track, it rubs off particles of the top coating, therefore opening some of the pores or cavities which release parts of the lubricant contained therein. This lubricant reduces surface friction of the slip ring brush at the slip ring track and therefore further wear, which results in an extended lifetime.

The present invention relates to a coating for sliding parts that allows using diamond like carbon (DLC) or DLC-comprising coatings in combination with Molybdenum- and/or Zinc-comprising lubricants in such a manner that enhanced reduction of wear and friction in comparison to the state of the art is attained. The coating system according to the present invention comprises at least a metal-comprising carbon layer of the type Me-C/a)-C:X, whose element composition can be expressed as (MeaC1-a)1-bXb with 0.3 <= a <=0.6 and 0<= b <=0.3, where Me is a metal or a combination of different metals and X is an element different from Me and different from C or X is a mixture of elements different from Me and which doesn't contain C. Me can be preferably Chromium (Cr) or Molybdenum (Mo) and X can be preferably hydrogen (H) or a mixture of silicon and hydrogen (Si + H).

Device for the rounding of dough pieces, comprising a support surface for the dough pieces, an elongate rounding rail having a concave rounding surface, the rounding rail extending to the support surface, members being provided in order to move the rounding rail in relation to the support surface having the dough pieces carried thereby, the longitudinal direction of the rail forming an acute angle to the direction of motion of the dough pieces, whereby the dough pieces being kneaded and rounded while rolling off on the rounding surface. The rounding surface is provided with a plurality of recesses distributed over the rounding surface and open toward the rounding surface, which recesses have a diameter in the range of 5-15 mm and a depth in the range of 3-8 mm

The invention relates to a lubricating device, particularly for use in an apparatus which is used to lubricate mobile lubrication points e.g. on a rotating belt or chain belt. A lubricant discharge body of a lubricating head, which when lubricant is conveyed by a feed pump into a dosing chamber which is separated from the lubricant discharge channel, is placed in a front standby position and, counter to the effect of a restoring force, is moved into a locking and lubricant release position wherein the link between the pump and the dosing chamber is blocked by a reversing piston and the dosing chamber is fluidic ally connected to the lubricant discharge channel and a predefined volume of lubricant can be pumped out of the dosing chamber into the lubricant discharge channel. The lubricant discharge body cooperates with a reversing piston in such a way that the feed pump is fluidic ally connected to the dosing chamber of a dosing piston/cylinder arrangement via an annular area of the reversing piston when the lubricant discharge body is located in a front standby position, and such that the dosing chamber is fluidically connected to the lubricant discharge channel via the angular area when the lubricant discharge body is placed in a retracted position in which the lubricant is released. The reversing piston blocks the fluidic connection between the feed pump and the dosing chamber such that the amount of lubricant provided for discharge can be pumped out of the dosing chamber in the direction of the annular area by a dosing piston which is impinged upon by the feed pump.

The invention relates to the field of metallurgical machinery, in particular to high-strength anti-nodulation CNRE rare earth heat-resistant steel for a furnace bottom roller and a preparation methodof the high-strength anti-nodulation CNRE rare earth heat-resistant steel. The steel comprises the following chemical components in percentage by weight: 0.2 to 0.5 percent of C, 1.5 to 2.5 percent ofSi, 6.0 to 13.0 percent of Mn, 16.0 to 26.0 percent of Cr, 1.0 to 6.0 percent of Ni, 0.3 to 2.0 percent of Mo, 0.05 to 0.50 percent of V, 0.05 to 0.50 percent of Nb, 0.2 to 0.6 percent of N, 0.005 to0.5 percent of RE and the balance of Fe. According to the high-strength anti-nodulation rare earth heat-resistant steel for the furnace bottom roller, strong solution strengthening and precipitationstrengthening effects are generated through C and N co-alloying and V and Nb micro-alloying, and the initial strength of the furnace bottom roller is improved; a high-temperature structure is stabilized by means of rare earth microalloying; the attenuation rate of high-temperature strength is reduced; surface abrasion of the furnace bottom roller is reduced; the anti-nodulation capacity is improved; moreover, an intermediate frequency furnace high-nitrogen alloying technology, a high-purity rare earth treatment technology and a centrifugal casting technology are adopted, so that a furnace bottom roller casting which is uniform in component, compact in structure and excellent in performance is obtained; and the technical problems of deformation, nodulation and the like of the furnace bottomroller can be effectively solved.

The invention discloses a method and device for preparing a multi-scale functional microstructure on a high-hardness surface. It is very necessary to develop an efficient and convenient multi-scale functional microstructure preparation method and device. The method comprises the steps that a single-point diamond cutter and a multi-edge diamond cutter are manufactured; then, a central inverted circular truncated cone pit microstructure array or a V-shaped groove microstructure array is imprinted on the to-be-machined surface of the to-be-machined workpiece; and finally, preparing a micron or submicron functional microstructure on the central inverted circular truncated cone pit microstructure array or the V-shaped groove microstructure array. The device comprises a four-degree-of-freedom positioning mechanism, a clamp, a vibration exciter, a single-point diamond cutter and a multi-edge diamond cutter. The multi-scale functional microstructure is machined on the high-hardness surface, the hardness, strength, abrasion resistance and precision of the high-hardness surface can be improved, and the method has very important significance in development of the high-hardness machining industry.

The invention discloses a heat-resistant high-strength mould material. The mould material comprises 1.4%-5.2% of C, 1.2%-5.0% of Si, 0.4%-1.2% of Mn, 0.01%-0.02% of S, 0.4%-1.0% of Cu, 0.6%-5.0% of Cr, 0.4%-4.8% of Ti, 1%-6% of Mg, 0.5%-3.0% of Al and 80%-96% of Fe in proportion. According to the heat-resistant high-strength mould material, the heat-conducting property is superior to that of steel, and the wetting property can be significantly improved through the Mg and the Ti which are added to the material; in addition, the material is free of brittleness, and the mechanical strength is close to that of the steel; graphite is a good solid lubricant, and hence the surface abrasion of aluminum and alloy of the aluminum can be reduced.

The invention discloses a semimetal brake pad and a preparation method thereof. The semimetal brake pad comprises a stainless steel back plate and a friction block, wherein the friction block is prepared from raw materials as follows: iron powder, metal fiber, jute fiber, ferrous chromite, epoxy resin, rubber powder, silicon dioxide aerogel, silicon carbide, nanometer titania, a compatilizer and graphene. The preparation method comprises steps as follows: the raw materials of the friction block are blended in percentage by mass and put in a high-speed mixer to be mixed, and a mixed material is obtained; the mixed material is injected into a forming mold and subjected to hot-press forming, and a hot-press formed semi-finished product is obtained; the hot-press formed semi-finished product is placed in a drying oven and dried, and the friction block is obtained; the friction block is bonded on the stainless steel back plate for constant hot-pressure processing, and the semimetal brake pad is obtained. The semimetal brake pad prepared with the method has the advantages of moderate strength, good wear resistance and low noise.

The invention discloses a plate feeding table, which comprises a support, wherein a worktable is arranged on the support; and a supporting and conveying device is arranged on the worktable. The 360-degree omni-directional multi-degree-of-freedom conveying can be realized; round balls are adopted as rolling carriers, with smoother contact surface and smaller friction, the plate feeding table has the advantage of creating convenience in conveying and reducing abrasion to the surfaces of plates; and the detachable way is adopted and the round balls can be conveniently replaced after being abraded, therefore the plate feeding table has high convenience.

The invention relates to the automotive technique. Its use while creating new and improving current all-terrain vehicles allows to ensure the achievement of the technical result in the form of simplifying the all-terrain vehicle transmission, increasing the reliability, and decreasing the wheels surface wear, specifically for wheels having a non-hub drive. For this purpose, an all-terrain vehicle comprises: an engine transmission section; a pair of caterpillar drives from each of the side faces of the engine transmission section; a support frame provided with at least two rotatably mounted axles, on each of which at least two wheels are fixed so as the distance between the maximal radius circles of those wheels at each of those axles corresponding approximately the distance between the midline of the caterpillar drives; wherein the engine transmission section being fixed on the support frame so as a contact pattern of each of the caterpillar drives with a surface of the corresponding wheel being not less than a contact pattern of the lower portion of this wheel with the movement supporting surface.

The invention provides a gear subjected to a surface treatment process. The surface of gear is coated with a wear-resistant high-strength resin coating which is formed by pre-heating the gear and a mold, and then injecting a molten wear-resistant high-strength resin in a mold cavity between the mold and the gear face of the gear so that the wear-resistant high-strength resin is highly crystallized in the gradual cooling process. The gear has an intermediate hub portion. The intermediate hub portion has a first end face located outside the side of a body of the gear, and a second end face obliquely connecting the side and the first end face of the body of the gear. Grooves are disposed in the first end face and the face of a hub hole of the intermediate hub portion, so that the gear can be clamped and fixed to a predetermined axial fixed position.