43results about How to "Achieve self-lubricating effect" patented technology

The invention discloses a self-lubricating ceramic composite material with a biomimetic structure and a preparation method thereof. The composite material has a structure which is alternately laminated by ceramic layers and lubricating layers, wherein the ceramic layer is ZrO2, Al2O3, or ZrO2-Al2O3, and the lubricating layer is made of graphite, molybdenum disulfide, or hexagonal boron nitride. The composite material has excellent friction and abrasion performance.

The invention relates to a preparation method for an alloy sample surface wear-resisting protective layer. Firstly, an alloy sample is subject to micro-arc oxidation treatment, and a multi-hole micro-arc oxidation layer is obtained on the alloy sample surface; and secondly, a sealant is applied to the alloy sample surface. According to the preparation method, through the technologies of micro-arcoxidation, sealant applying and the like, an even micro-arc oxidation layer and lubrication particle composite self-lubricating wear-resistant coating is prepared on the alloy sample surface, the characteristic that micropores and lubrication particles are organically bonded is effectively used, and the antiseptic, wear-resisting and lubricating properties are greatly improved.

The invention discloses a special seal ring for an automobile air filter. The special seal ring for the automobile air filter is prepared from the following components in percentage by weight: 30% of butadiene-acrylonitrile rubber, 15% of natural rubber, 25% of carbon black, 10% of zinc oxide powder, 3% of softener dioctyl-phthalate, 1% of active agent zinc oxide, 4% of stearic acid, 2.3% of vulkacit dicumyl peroxide, 2% of sulphur powder, 2% of self-lubricating agent unsaturated fatty acid, and the balance of engine oil. The heat resistance of the seal ring is improved to 135 DEG C from 100 DEG C; the capabilities of resisting engine oil and fuel corrosion are intensified greatly; moreover, a wax-type protective layer can automatically exude from the seal ring special for the automobile air filter after the seal ring is placed at normal temperature for 15 days so as to achieve the self-lubricating effect, so that the seal ring special for the automobile air filter is very convenient to assemble, and the service life of the seal ring is also prolonged greatly.

The invention discloses a self-lubricating bearing and a preparation method thereof. According to the self-lubricating bearing, chromium-containing alloy steel is used as a matrix, the working surface of the matrix is a graphene/calcium fluoride/ceramic self-lubricating coating, the coating comprises 30%-50% of nickel-coated aluminum oxide, 20%-40% of nickel-coated silicon nitride, 5%-8% of aluminum-oxide-coated graphene, 5%-8% of aluminum-oxide-coated calcium fluoride, 20%-30% of titanium carbide and 0.5%-2% of nickel, and the sum of weight percentages of all powder is 100%. Graphene and calcium fluoride powder are added in ceramic mixed powder, and the self-lubricating coating is formed on the surface of the matrix material in a fusion covering manner by a laser synchronous powder feeding mode. In the self-lubricating bearing prepared by the method, the binding force between the metal matrix and the self-lubricating coating is large; and meanwhile, the self-lubricating bearing has the characteristics of high surface hardness, good wear resistance and the like. In the working process, a continuous solid lubricating film can be formed on the working surface by means of the self-lubricating coating, and therefore, the self-lubricating function of the bearing is fulfilled.

The invention belongs to the technical field of overlaying, and particularly relates to a method for preparing an NiAl system intermetallic compound composite self-lubricating coating through a self-propagating method. The method aims to solve the problems that a self-lubricating coating prepared through an existing method is short in wear resisting time, complex in process, high in cost and limited in use temperature. The method comprises the steps that firstly, an Ni-Al pressing blank is pressed according to the molar ratio of 1:1; secondly, a 3Ni-Al-MoS2 pressing blank is pressed according to the molar ratio of 3:1; and thirdly, the 3Ni-Al-MoS2 pressing blank, the Ni-Al pressing blank and a metal base body are stacked from top to bottom, then the Ni-Al pressing blank is ignited, pressurization is carried out while igniting is carried out, pressure relief is carried out after combustion is finished, and the NiAl system intermetallic compound composite self-lubricating coating is obtained. The coating prepared through the method has the remarkable lubricating effect; the process for preparing the coating is quick and high in efficiency; and energy is saved, and environment friendliness is achieved.

The invention discloses a manufacturing process of a low-volatile organic gas polyurethane enameled wire. The manufacturing process comprises the following steps: (1), performing wire drawing; (2), performing annealing; (3), performing painting; (4), performing baking; (5), performing cooling; and (6), performing take-up. The invention also discloses a low-volatile organic gas polyurethane enameled wire which is composed of a metal conductor and a polyurethane insulating layer with self-lubricating performance. A fluorine-containing group is introduced into a polyurethane molecular chain of the insulating paint to form a polyurethane insulating layer with self-lubricating performance, a traditional lubricating oil layer is replaced, and a lubricating layer does not need to be specially coated; a problem that the whole electronic control system is out of control or paralyzed due to the fact that volatile gas corrodes the contact surface of an electronic component in a closed environmentcaused by volatilization of lubricating oil on the surface of an enameled wire and residual volatile gas of a polyurethane insulating layer is well solved. And a problem that the requirement of a sealed electronic component on the volatile organic gas content of the enameled wire cannot be met is also solved.

The invention provides hydrophilic lubricant auxiliary agent masterbatch and a preparation method thereof, and a hydrophilic self-lubricating polymer material including the same. The masterbatch includes, by weight percentage, 20-93% of an amphiphilic oligomer, 2-30% of a hydrophilic polymer material and 5-50% of a hydrophobic polymer material; the amphiphilic oligomer includes a hydrophilic chainsection and an oleophilic chain section, the number average molecular weight of the hydrophilic chain section is 300-3,000, and the number average molecular weight of the oleophilic chain section is300-3,000; and the hydrophilic self-lubricating polymer material includes 60-99 parts by weight of a polymer matrix material and 1-40 parts by weight of hydrophilic lubricant auxiliary agent masterbatch. The provided masterbatch can effectively enhance the hydrophilic lubrication performance of the polymer material, and is lasting in lubrication effect; and the polymer material can be directly molded to prepare medical instruments without coating self-lubricating coatings or lubricants.

The invention relates to a three-dimensional elliptical vibration flexible device based on a metal porous material, and belongs to the technical field of optical part machining. The device is characterized in that a cutter is fixed in a cutter groove in the middle of a T-shaped cutter holder of a flexible base body through a bolt; the heads of piezoelectric stacks in the vertical direction are incontact with straight plate type flexible hinges, pre-tightening blocks are tightened through bolts to pre-tightening the lower ends of the piezoelectric stacks, and capacitive displacement sensors are clamped on sensor clamps; the heads of piezoelectric stacks in the horizontal direction are in contact with straight plate type flexible hinges, and capacitive displacement sensors are clamped on sensor clamps; and the lower portion of a base is connected with dovetail strips through bolts. The device has the advantages that the flexible base body can effectively reduce vibration conducted to amachine tool guide rail from a tool nose, the motion precision of the device is guaranteed, the self-lubricating effect of a mechanism is achieved, the service life is prolonged, and cutting machiningon various face types can be achieved; and meanwhile, the four piezoelectric stacks are provided with the capacitive displacement sensors for monitoring actual displacement in real time and feeding back the actual displacement to a controller for compensation, so that the machining precision is high.

The invention discloses a herringbone gear with an annular oil storage cavity. The herringbone gear comprises a left part and a right part; the left part and the right part are mutually mirror images; annular grooves are formed in the bonding surfaces of the left part and the right part; and the two annular grooves are combined to the annular oil storage cavity. The herringbone gear with the annular oil storage cavity has the following advantages: the herringbone gear adopts a split structure consisting of the left part and the right part, can largely reduce the machining cost, is provided with the oil storage cavity inside, and can slowly supply lubricating oil into gear teeth by using a gap between the left part and the right part to achieve a self-lubricating effect.

The invention discloses a sewing-machine self-lubricating oil-storage connecting rod mechanism. The sewing-machine self-lubricating oil-storage connecting rod mechanism comprises a large connecting-rod eccentric wheel. The surface of an outer ring of the large connecting-rod eccentric wheel is matched with a large connecting rod, one side of the large connecting-rod eccentric wheel is matched with a large-connecting-rod-eccentric-wheel fixing frame, the other side of the large connecting-rod eccentric wheel is matched with a cloth feeding cam pressing piece, a set of felt cushion blocks are arranged in the large-connecting-rod-eccentric-wheel fixing frame, a large-connecting-rod-eccentric-wheel shaft hole is formed in the large connecting-rod eccentric wheel, and an upper shaft is arranged in the large-connecting-rod-eccentric-wheel shaft hole, and sequentially penetrates through the large-connecting-rod-eccentric-wheel fixing frame, the large-connecting-rod-eccentric-wheel shaft hole and the cloth feeding cam pressing piece. The sewing-machine self-lubricating oil-storage connecting rod mechanism has the advantages that when the large connecting-rod eccentric wheel moves, lubricating oil of the felt cushion blocks is automatically oozed out to lubricate the large connecting-rod eccentric wheel, the self-lubricating effect is achieved, it is avoided that abrasion of the large connecting-rod eccentric wheel appears to cause damage, the service life of a sewing machine is prolonged, the felt cushion blocks only need to be filled with lubricating oil during maintaining, the felt cushion blocks can be reused, the using effect is good, and popularization is facilitated.

The invention relates to the field of polymer materials, in particular to a high-strength self-lubricating polyurethane piston sealing body and a preparation method thereof. Specifically, the invention relates to a composition which can be used for preparing a piston sealing body, the piston sealing body prepared from the composition, and a method for preparing the piston sealing body. The piston sealing body can be used as a concrete piston sealing body for concrete pumping equipment.

The invention belongs to the field of pump units, and particularly relates to a centrifugal pump with a self-lubricating bearing and a self-centering function. The centrifugal pump comprises a pump case, a pump impeller, a pump shaft and a driving source, wherein the pump impeller is used for driving a medium in the pump case to flow in a set direction, the pump shaft is used for driving the pump impeller to rotate, and the driving source is at least located at one end of the pump shaft and used for driving the pump shaft to rotate. A pump cavity is formed in the pump case and used for circulation of the medium, the pump shaft penetrates through a pump case body, and the pump impeller on the pump shaft is arranged to be contained in the pump cavity. The centrifugal pump further comprises a bearing assembly used for supporting the pump shaft, and a channel is formed between the position to be lubricated on the bearing assembly and the pump cavity and used for connecting the position to be lubricated and the pump cavity and for circulation of the medium. Liquid state fluidity of the medium self is used for achieving the self-lubricating effect of the bearing assembly, processing technologies of the centrifugal pump are reduced to the great degree, so that the effect of simplifying assembly structures of the centrifugal pump is achieved, and the centrifugal pump is simple in structure, good in stability and high in working reliability.

The invention discloses an axial sliding mechanism and relates to the field of sliding mechanisms, aiming to solve the problems of complex structure, tedious processing, difficulty in control, too high cost, and greasy dirt pollution of the axial sliding mechanism. The mechanism comprises a shaft (1), a shaft sleeve (2), a lubricating ring sleeve (3) and an annular groove (4), wherein the lubricating ring sleeve (3) is sleeved on the exterior of the shaft (1) and is an open ring structure, the external diameter of the lubricating ring sleeve (3) in a natural open state is larger than the internal diameter of the shaft sleeve (2), and the annular groove (4) is also can be formed in the shaft (1); the lubricating ring sleeve (3) is embedded in the annular groove (4), and the lubricating ring sleeve (3) is made of a self-lubrication material and can be made of teflon or nylon. The axial sliding mechanism disclosed by the invention is applicable to various precision equipment or instruments.

The invention discloses a conductor rail for a straddle type monorail and the straddle type monorail with the conductor rail. The conductor rail for the straddle type monorail comprises a base and a steel belt arranged on the base. A concave part is arranged on the surface of the side, away from the base, of the steel belt. A groove is defined in the concave part, the concave part is provided withan opening which communicates with the groove and is open towards the direction away from the base, and the width of the opening is smaller than that of the groove. According to the conductor rail for the straddle type monorail, the concave part is arranged on the steel belt to define the groove and the opening which communicates with the groove and is open towards the direction away from the base, and the width of the opening is smaller than that of the groove, so that when the conductor rail is applied to the straddle type monorail to be used for train operation, a carbon contact strip is prevented from being separated from the conductor rail from the opening due to being located in the groove, and then the arc discharge phenomenon is avoided and normal train operation is guaranteed; and meanwhile, good environment protection performance is achieved, and the self-lubricating effect is achieved.

The invention particularly relates to a micro permanent magnet motor for a liquid cooling pump, and solves the structural design problems of large friction loss, large mechanical gap, low efficiency, insufficient structural strength and weak resistance to radial impact force of a traditional micro liquid cooling pump motor sealing element. The micro permanent magnet motor for the liquid cooling pump comprises an end cover assembly, a casing, a stator assembly and a rotor assembly. The end cover assembly and the casing are fixedly and hermetically connected to form a stator and rotor mounting cavity; the stator assembly is located in the stator and rotor mounting cavity and comprises a stator sheath and a stator armature which are coaxially arranged in sequence from inside to outside; and the rotor assembly comprises a motor shaft, and comprises a rotor core, magnetic steel and a rotor sheath which are positioned in the stator and rotor mounting cavity and are coaxially arranged on the motor shaft in sequence from inside to outside. According to the invention, the first flow channel is arranged on the end cover assembly, the second flow channel is arranged on the rear lining, the third flow channel is arranged in the motor shaft, the three flow channels are matched with the gaps for use, the flow resistance of cooling liquid in the motor is reduced, and the efficiency of the motor is improved.

The invention belongs to the technical field of metal wire pulling mold manufacturing, and relates to a laminated self lubricating ceramic wire pulling mold and a preparation method thereof. A base body material of the laminated self lubricating ceramic wire pulling mold is shard-hardness structure ceramic; the mold is formed by alternately overlapping basic layers and lubricating layers in the pulling work direction; the basic layers ensure the structure intensity of the whole of the mold; the lubricating layer provides the lubrication function of the pulling production. The laminated self lubricating ceramic wire pulling mold is prepared through the processes of layered lamination material laying, hot pressing sintering, diamond ultrafine milling hole making and the like. The wire pulling mold can be widely applied to dry type pulling processing of high-toughness metal wire materials; the serious friction and abrasion work conditions of a pulling work interface can be effectively avoided, so that the surface quality of the wire material production can be obviously improved; the work life of the wire pulling mold can be obviously prolonged; simplicity, convenience, high efficiency, energy saving and environment protection are realized.