226 results about "Wear loss" patented technology

A mechanical scribing apparatus with controlling force of a scribing cutter for adaptively separating each unit of thin film solar cells formed on a single substrate, which is always capable of performing a predetermined minute scribing of a work in accordance with a wear loss of a scribing cutter. This apparatus is provided with a scribing means for placing a scribing cutter having a cylindrical body tapered at a specified tapering angle and having a flat tip face at a specified surface position of the work, pressing the cutter with a specified pressure force to the surface of the work and moving the cutter on the surface of the work, a means for measuring the size of a flat tip face of the scribing cutter and a means for variably controlling the pressure force of the scribing cutter in accordance with the measured size of the flat tip face of the cutter.

The invention provides an ultra-wear-resistant alumina ceramic ball. The ultra-wear-resistant alumina ceramic ball comprises the following chemical components: 90-95% by weight of Al2O3, 5-8% by weight of SiO2, 0.3-0.5% by weight of CaO, 0.5-0.9% by weight of MgO, 1-2% by weight of ZrO and 0.1-0.5% by weight of La2O3/Y2O3, wherein the equivalent wear loss is less than 72 per mil. A provided preparation method comprises the following process steps of: adopting alumina powder and other mineral raw materials for burdening, refining mud, drying, calcining, synthesizing, ball-milling, granulating, forming and firing to obtain a product. According to the invention, the wear resistance of the product can achieve the standard of the alumina ceramic ball; and furthermore, the ultra-wear-resistant alumina ceramic ball has the advantages of lower cost of the raw materials, better grinding performance and high performance-price ratio of the product, is more suitable for being applied in production, and can reduce the production cost of an enterprise and improve the production efficiency of the enterprise.

The invention discloses a detection system and method for wear defects of a track, belonging to the field of wear detection. The detection system and method for wear defects of the track have high measurement precision, high work efficiency and strong adaptive capacity to environments. The system is installed on a track inspection car and used for defect detection of tracks on a to-be-inspected section; a plurality of nodes are arranged on the to-be-inspected section, and each node corresponds to a standard three-dimensional model; three-dimensional reconstruction is carried out on the surface of the tracks by using a structured light sensor; a processing unit compares a three-dimensional point cloud obtained by the structured light sensor with a corresponding standard three-dimensional model, detection is carried out so as to obtain absolute wear loss of the tracks, and a defect area is marked; all the three-dimensional point clouds are spliced via the processing unit so as to obtain a complete three-dimensional cloud picture; so the system has strong adaptive capacity to environments. The detection method for wear defects of the track has the advantages of high measurement precision and low cost.

A copper-base crystallizer surface laser cladding method is characterized in that the method comprises the following steps in sequence: (1) preparing a nickel-base transition layer with thickness of 0.3-0.5mm; (2) melting the transition layer by using a mixing mode CO2 laser beam; (3) preparing a nickel-base or cobalt-base alloy work layer with thickness of 0.6-1.0mm by ultrasonic spraying; (4) melting transition layer by using the mixing mode CO2 laser beam; and (5) processing a laser cladding layer into a smooth surface. By the method of the invention, excellent metallurgically bonded cladding layers are formed on copper-base materials. The hardness and wearing resistance experiments show that the hardness of the work layer is above Hv350, which is improved by more than 3 times compared with the hardness of copper alloy; the wear loss of the laser cladding nickel-base or cobalt-base work layer is about 10mg and the high temperature wearing resistance is over 5 times as high as that of the copper alloy, thus having the effect of strengthening the copper alloy. The method of the invention is suitable for not only strengthening the copper-base crystallizer but also strengthening various copper-base alloy surfaces.

The invention provides an ultrahigh-strength wear-resisting plate with a cement base, which comprises the following components: 50-100 weight parts of cement, 0-50 weight parts of mineral blending material, 1-5 weight parts of water reducing agent, 100-400 weight parts of wear aggregate, 0-20 weight parts of steel fiber, 0-10 weight parts of organic fiber and 15-30 weight parts of water. The production method of the ultrahigh strong-wear plate with the cement base provided by the invention comprises the following steps: weighing each component according to the ratio; uniformly stirring the components except the water; continuously stirring the components to a uniform state after the water is added; placing the mixture into a die for artesian molding or vibration molding; arranging a connecting piece or reserving a hole on the molding surface of a plate according to the requirements; carrying out the maintenance for 1 day at the normal temperature after the molding and carrying out thedemolding; and carrying out the maintenance with hot water at the temperature no lower than 50 DEG C for 1-3 days, or carrying out the maintenance with steam for 1-3 days to prepare the strong-wear plate. In the invention, the plate with large compressive strength, large impact strength and small wear loss amount can be obtained, the connecting piece can be installed or the hole is reserved, and the plate has the advantages of simple production process, low cost, and short construction and repair period.

The invention provides a detection system and a detection method of friction elevator rope groove wear loss, and belongs to the detection system and the detection method of the elevator rope groove wear loss. The system comprises an upper computer, a laser displacement sensor, a collector, a direct-current power source module and a sensor support. The laser displacement sensor is installed on the sensor support, and the output end of the laser displacement sensor is connected with the collector. An encoder is installed on a roller of an elevator, the output end of the encoder is connected with an Ethernet, and the output end of the collector is connected with the input end of the upper computer through an interface of the Ethernet. The upper computer achieves real-time analysis of the on-line detection of the friction elevator rope groove wear loss and determines the wear loss conditions of different positions according the encoder. The detection system and the detection method have the advantages that the real-time quick on-line detection of the wear loss of a friction liner can be achieved, the friction liner needing to be replaced can be positioned precisely in real time, the working intensity of workers is reduced, the service life of a steel wire rope is prolonged, and the problem that real-time monitoring of the wear loss of the friction line cannot be achieved in a project is solved.

The invention discloses an online monitoring device and an online monitoring method for thrust bearing wear loss of a fully-sealed pump. The online monitoring device comprises a rotor, a thrust disc and a graphite bearing bush of the sealed pump, a hole is formed in the sealed pump and faces towards an end face of the rotor or faces towards a lateral side of the thrust disc, a position probe is mounted in the hole and connected with an inductive transducer, the inductive transducer is connected with an amplifier via a signal transmission line, the amplifier is connected with an analog/digital converter via the signal transmission line, and the analog/digital converter is connected with a computer via the signal transmission line. The online monitoring device and the online monitoring method have the advantages that different mounting manners can be selected according to different mounting positions, and moving distance of the thrust disc can be reflected directly and accurately by both measuring methods, so that moving amount of the graphite bearing bush can be obtained, wear conditions of a water-lubricated thrust bearing inside the fully-sealed pump can be reflected directly, and faults like sudden shutdown can be avoided.

The invention discloses a wear detection device for an elevator driving rope sheave. The wear detection device comprises an angular displacement detection device, a linear displacement detection device and a wear calculating unit, wherein the wear calculating unit is used for calculating the wear of the elevator driving rope sheave; and the wear calculating unit is used for calculating the practical value of the diameter of the elevator driving rope sheave according to the angular displacement of the elevator driving rope sheave detected by using the angular displacement detection device and the linear displacement of the elevator driving rope sheave detected by using the linear displacement detection device, and is further used for calculating the wear loss of the elevator driving rope sheave according to the practical value of the diameter and the nominal value of the diameter of the elevator driving rope sheave. According to the wear detection device, the linear displacement or angular displacement can be changed as required, slippage between the elevator driving rope sheave and an elevator driving rope can be judged, the wear detection result of the elevator driving rope sheave can be evaluated correspondingly, a specific area where an elevator car is positioned is not limited, and wear of the elevator driving rope sheave can be detected at any time. The invention further discloses a wear detection method for the elevator driving rope sheave.

The invention discloses a disc type magnetic control speed governing clutch which aims at providing a speed governing clutch with small wear loss, long service life, high bearing capacity, overload protection function and speed reduction. The clutch comprises a planet transmission mechanism and a brake mechanism. The planet transmission mechanism is provided with a speed governing input end, a power input end and a power output end, wherein the speed governing input end is directly or indirectly connected with the brake mechanism. The brake mechanism comprises one or more than one brake disc 2, one or more than one linkage disc 3 and a governing mechanism 9, wherein a part of or all brake discs 2 and linkage discs 3 are provided with permanent magnets or permanent magnets showing magnetic poles on disc faces, and the rest are conductors. The brake mechanism carries out braking by means of magnetic force between the brake discs 2 and the linkage discs 3. The invention is applicable to the soft start and the soft braking of mechanical equipment.

The invention belongs to the technical field of conveyor belts and particularly discloses a super wear-resistant rubber-plastic conveyer belt. The technical scheme for forming the conveyor belt is as follows: plasticating natural rubber, butadiene rubber, high styrene, high abrasion furnace black, 40# engine oil, an antiager D, antiager A, antiager 4010NA, zinc oxide, stearic acid, an accelerator NOBS and 2.0-2.5 parts by weight of sulphur powder; curing, banburying, performing open mixing, and vulcanizing to produce the super wear-resistant rubber-plastic conveyer belt. The conveyer belt has the advantages of good wear resistance and low temperature performance; and tests prove that the wear loss of the conveyer belt is no more than 120mm<3>, the tensile strength is more than 21MPa, and the elongation rate is more than 440%.

The invention discloses a wear prediction method for a shield tunneling hob. The wear prediction method for the shield tunneling hob comprises the following steps that a unit displacement wear loss caused by a plastic removal mechanism, a unit displacement wear loss caused by a brittle fracture mechanism, a unit displacement wear loss caused by adhesive wear, a unit displacement wear loss caused by fatigue wear, a rock breaking arc length generated when a point on the front side of the hob rotates by one circle, a spatial rock breaking arc length generated when a point on the side face of thehob rotates by one circle, a normal cutting force of the hob, and a horizontal force borne by the hob are acquired; the radial wear and wear size of the front side of a hob ring caused when the hob rotates by one circle are worked out; the wear loss and wear size of the side face of the hob ring caused when the hob rotates by one circle are worked out; the four wear losses are multiplied by corresponding fitting coefficients, and the products are added to obtain the wear size of the front side and the wear size of the hob ring; and a wear prediction model is generated, and the wear is predicted. By the adoption of the wear prediction method, the service life of the shield tunneling hob can be predicted, the prediction precision can be improved, and the problems of severe wear of the hob and frequency opening of a bin are solved.

The invention belongs to the field of light-weight wear-resisting materials and discloses a wear-resisting heat-conducting polyurethane bearing as well as an preparation method and an application thereof. The preparation method of the wear-resisting heat-conducting polyurethane bearing comprises the following steps of: soaking a fiber into a copolymer, dispersing ultrasonically, adding a polyurethane prepolymer, a curing agent and a heat-conducting filler, mixing the materials, degassing in vacuum, pouring the degassed mixture into a preheating mold, heating to cure, cooling, and demolding to obtain the wear-resisting heat-conducting polyurethane bearing. The wear-resisting heat-conducting polyurethane bearing prepared by adopting the preparation method has the advantages of light weight, wear resistance (relative volume wear loss of 150mm<3>), good heat conductivity of 4W/m*K, high strength (high modulus of compression of 520Mpa, and notched impact strength of 120J/m), low cost, long service life and the like, is simple in forming process, is suitable for industrial production and can be widely applied to clean-energy power generation equipment.

A grease composition, which comprises a base oil selected from at least one of synthetic hydrocarbon oil, ester-based synthetic oil, and ether-based synthetic oil; a thickening agent selected from at least one of lithium-based soap, lithium-based complex soap, and a urea-based compound; polytetrafluoroethylene resin powders having a number average molecular weight Mn of 20,000-100,000; and zinc dialkyldithiophosphate having straight or branched alkyl groups of at least carbon atoms, preferably 5-13 carbon atoms, and more preferably 8-12 carbon atoms, has not only a distinguished lubricability, when applied to plastic members, but also a distinguished durability as given by change in friction coefficient and wear loss, after the sliding test.

The present invention relates to a vacuum filter bag comprising a layer containing immobilized odor-retaining particles characterized in that the abrasion loss of said odor-retaining particles caused by an air flow of 90 cm/s through a 200 cm² specimen of said layer for two hours, measured in accordance with DIN 44956 T2, is 0 to 10% by weight of the total odor-retaining particles present before starting the air flow. The vacuum filter bags of the invention have a high dust holding capacity and an excellent long lasting odor removing effect.

The hard wear resistant coating preparing process features that the composite WC-Co/MoS2 powder is used in preparing the hard wear resistant coating by means of exploding spraying technology. The composite WC-Co/MoS2 powder consists of WC-Co in 94-99 wt% and MoS2 in 1-6 wt%. Compared with available technology, the composite wear resistant WC-Co/MoS2 coating of the present invention has high hardness, high compactness, high combination strength, low friction coefficient and very low wear loss and is one kind of excellent composite self-lubricating hard wear resistant coating.

The invention discloses an automatic calibration device for a current vortex sensor measuring the wear loss of a TBM hob. The automatic calibration device is characterized in that convex guide rails on the two sides of a bottom plate match concave grooves on hob brackets, a hob screw coupling connects a left-handed screw and a right-handed screw together, the screws are rotated to drive the hob brackets to move away from or to each other, and therefore, the distance between the hob brackets is applicable to the installation of hobs of different sizes; the shaft of the hob is embedded into fixed blocks, and is mounted on the semicircular grooves of the hob brackets; a single-chip microcomputer controls a drive circuit, a motor drives a sensor screw to rotate, the distance between a sensor vertical plate moving on the T-shaped guide rails and the blade of the hob changes so as to simulate the wear process of the hob; and a voltage signal output by the current vortex sensor and a distance signal output by a displacement sensor are sent to a conditioning circuit for conditioning and then sent to a single-chip microcomputer for processing, a fitting coefficient of wear loss of the hob is fitted out, and data is displayed.

The invention discloses a method for improving the properties of rubbering track shoe rubber via compounding and modified cerium oxide. At least two modifying agents are respectively used for modifying the cerium oxide, on the basis of keeping the original production formula and production process constant, 0.1 to 10% of compounding and modified cerium oxide is added via a mechanical mixing method, and the properties, especially a wear-resisting property and a tearing resistance property, of the rubbering track shoe rubber are improved. The tensile strength and the tearing strength of the rubber obtained via the method are respectively increased by 11% and 41%, and wear loss is reduced by 16%. Therefore, the method is suitable for rubber tracks of large-scale machinery, such as tanks, derrick cranes, agricultural harvesters and the like.

The invention belongs to the technical field of mechanical dynamics, and particularly relates to a gear pair abrasion loss prediction method based on dynamic meshing force, which comprises the following steps: S1, acquiring basic parameters of a gear pair; S2, calculating the time-varying meshing stiffness and static load distribution coefficient of the worn gear pair according to the acquired basic parameters of the gear pair and a gear tooth bearing contact analysis method; S3, introducing the time-varying meshing stiffness obtained through calculation into a gear rotor system dynamic modelto calculate a dynamic meshing force and a dynamic load distribution coefficient of the gear pair; and S4, adopting an Archard wear theory, a wear coefficient empirical formula, the dynamic meshing force of the gear pair and the dynamic load distribution coefficient to calculate and obtain the tooth surface wear loss of the gear pair. According to the gear pair abrasion loss prediction method based on the dynamic meshing force, prediction efficiency and prediction precision are both considered.

The invention discloses a braking cylinder of a braking device of a railway wagon, which mainly solves the problem that the traditional braking cylinder has the disadvantages of large wear loss of components, poor sealing performance and poor working stability. The braking cylinder mainly comprises a cylinder body, a piston arranged in the cylinder body and a piston push rod rigidly connected with the piston together, wherein a flange elbow for air intake and air exhaust is arranged at the bottom of the cylinder body; a release spring is arranged between the piston and a cylinder cover; the upper end of the piston push rod extends out of the cylinder cover; an integral type membrane is covered on the working end surface of the piston; and a sealed space is formed between the integral type membrane and the bottom of the cylinder body, thus the braking cylinder has self-sealing performance. The braking cylinder also has the function of automatically marking the stroke of the piston of the braking cylinder by arranging stroke marks. The invention has the advantages of simple structure, good sealing effect, less wear loss, high reliability and long service life.

The invention provides a friction and wear testing machine with controllable humidity. The testing machine is provided with a workbench bin, wherein a main shaft motor is fixed in the lower layer of the workbench bin, the main shaft motor is connected with a lower clamp, and a thrust ball bearing is mounted at the joint between the lower clamp and the workbench bin; a lower sample is mounted on the lower clamp, an environmental box is mounted at the periphery of the lower clamp and the lower sample in a covering manner, an embedded boss is arranged at the bottom of the environmental box, a circular hole is formed in the top of the environmental box, an STH11 digital temperature and humidity sensor is mounted at the bottom of the inner side of the environmental box, and a ventilation spring button switch is mounted at the top of the environmental box; an upper sample is fixed on an upper clamp, the upper clamp is connected with a triaxial force sensor, and the triaxial force sensor is connected with a cushion block through bolts; a servo motor is connected with a bevel gear pair, a screw bearing is mounted at the connecting position between a screw shaft and the workbench bin, a screw nut is connected with a loading sleeve, and a column beam is arranged at the periphery of the loading sleeve . Through the adoption of the friction wear testing machine with the controllable humidity, not only the experimental humidity can be intelligently controlled, but also the stability is good, and the friction and wear loss of materials can be reduced.

The invention provides a preparation method of petroleum resin through mixing aliphatic hydrocarbon resins and aromatic hydrocarbon resins, belonging to the technical field of organic synthesis. The invention adopts C-5 resin and C-9 resin as the raw materials. The invention is characterized in that the preparation process is carried out according to the following steps: (1) C-5 resin and C-9 resin are adopted as the raw materials, which are reacted in a normal pressure reactor for more than or equal to two hours to produce fatty resins-mixture compounded by aromatic hydrocarbon resins, wherein, the reaction temperature is controlled at 180 to 200 DEG C; (2) rubber asphalt is added in the system for more than or equal to two hours to produce the finished products, wherein, the reaction temperature is controlled at 180 to 200 DEG C. The petroleum resin prepared with the method of the invention is capable of improving the mixing uniformity of rubbers of different polarity and viscosity, reducing the mixing time, improving the mobility of the rubber materials, improving the stretching strength and the physical and mechanical properties of the rubber materials, and fundamentally overcoming the influence of processing various additives on the stretching strength; the tear strength is increased and the wear loss is reduced. The product is of low price and is suitable for promotion.