136 results about "Wear particle" patented technology

The invention discloses an electrostatic induction and optical imaging principle-fused online monitoring device and method for wear particles of a water-lubricated bearing, and belongs to the field of state monitoring of mechanical equipment. The device comprises a square insulation detection cavity, a detection electrode array, an electromagnetic shielding shell, a high-speed optical imaging module and a signal processing unit, the square insulation detection cavity is installed in a bearing lubrication water loop. The detection electrode array is fixed to the outer wall of the cavity and used for capturing electrostatic signals generated when the abrasion particles pass through. The electromagnetic shielding shell wraps the detection cavity and is grounded through a wire to eliminate environmental electromagnetic interference. The high-speed optical imaging module integrates a high-magnification microscope lens and a CMOS sensor, is coaxially mounted with the detection cavity, and obtains the morphology characteristics of the wear particles in real time; and the signal processing unit performs multi-modal data fusion analysis on the electrostatic signal and the optical image. Through cooperative detection of electrostatic induction and optical imaging, the monitoring precision and reliability of the wear particles of the water-lubricated bearing are remarkably improved.

The invention discloses a surface wear volume time-space distribution prediction method combining abrasive particle and vibration monitoring, which comprises the following steps: constructing an abrasive particle size distribution driven Markov process, representing a random wear process, and realizing dynamic and probability representation of real-time wear volume time evolution; a physically constrained double-branch mapping model is constructed, fuzzy mapping of the surface wear volume and the vibration time-frequency characteristics is established, and precise observation of wear volume space distribution is achieved; the two physical mechanisms are fused on the basis of a state space modeling framework, a digital twinborn model combining abrasive particle monitoring and vibration monitoring is constructed, and accurate prediction of the abrasion volume of the friction pair part in the time dimension and the space dimension is achieved. According to the method, the wear volume space-time distribution is predicted by fusing the wear particle information and the physical correlation between the vibration characteristics and the wear process, and the precise monitoring of the wear process is realized.

The invention relates to a polishing performance evaluation method and device and a polishing system for improving the polishing performance. The polishing performance evaluation method comprises the steps that the track lengths of all abrasive particles of a polishing disc are obtained; based on the track lengths of all the abrasive particles, calculating to obtain a track average value and a variance; and based on the trajectory average value and the variance, trajectory distribution uniformity is obtained through calculation. The wafer polishing device has the advantages that the rotating motion of the polishing disc unit and the linear motion of the polishing pad unit are combined, so that the wafer polishing uniformity can be improved, the polishing time is shortened, and the polishing efficiency is improved; the rotating motion of the polishing disc unit and the linear motion of the polishing pad unit are combined, so that uneven abrasion of the polishing pad unit can be avoided, the service life of the polishing pad unit is prolonged, and the cost is reduced.

The invention discloses wear-corrosion-resistant high-strength steel for a power transmission tower and a preparation method thereof, and belongs to the technical field of metal materials. The wear-corrosion-resistant high-strength steel for the power transmission tower provided by the invention has good corrosion resistance and wear resistance, has excellent wear resistance in a soil environment of sulfate ions with the concentration of 300 mg / kg-50000 mg / kg and chloride ions with the concentration of 500 mg / kg-10000 mg / kg, and meets various environmental performance requirements of an acid soil environment, an atmospheric corrosion environment and the like. In an acid soil environment, the corrosion resistance is more than 8 times that of plain carbon steel, and the relative corrosion rate is lower than 10%; compared with Q355B, the corrosion rate of atmospheric corrosion resistance is lower than 40%, and the abrasive wear rate is 26.5%-28.0%; and through reasonable matching of corrosion-resistant elements, the requirements of corrosion resistance in various environments are met. The yield strength is 775 MPa-805 MPa, the tensile strength is 952 MPa-985 MPa, the percentage elongation after fracture A50 is larger than or equal to 28%, the low-temperature impact toughness at the temperature of-60 DEG C is larger than or equal to 260 J, meanwhile, the forming performance is excellent, and the 180-degree cold bending requirements that d is equal to 1.0 a are met.

The invention discloses an on-line monitoring system and method for gearbox oil of a wind turbine generator, belongs to the technical field of gearbox oil monitoring, and solves the problem of how to improve the real-time performance and accuracy of gearbox oil monitoring. According to the invention, multiple sensors are deployed to cooperatively collect oil quality information signals and vibration signals, monitoring is carried out from multiple dimensions of the oil state, and the limitation of monitoring of a single parameter is effectively avoided; by monitoring the oil viscosity, the moisture content and the abrasive particle index of the gear box in real time, the abnormal state caused by lubrication failure or abrasion aggravation can be recognized, and the non-planned shutdown loss can be reduced through a predictive maintenance strategy formulated based on the oil parameter change trend; by monitoring moisture and metal particles in the oil, secondary abrasion caused by lubrication degradation can be effectively inhibited, all-weather state monitoring is conducted on the gear box, safety accidents caused by sudden failures are avoided, and the real-time performance and accuracy of monitoring of the oil in the gear box are effectively improved.

The invention discloses an automobile part grinding constant-force grinding device, and relates to the technical field of constant-force grinding, the automobile part grinding constant-force grinding device comprises a longitudinal adjusting assembly, a transverse adjusting assembly, a clamping assembly, a grinding assembly and a grinding wheel wear monitoring assembly, the three-direction force sensing module is used for measuring the stress variation of the clamping assembly in the X-axis direction, the Y-axis direction and the Z-axis direction, the total grinding force direction and amplitude are obtained, the control terminal receives data and controls the Y-axis motor, the X-axis motor and the Z-axis motor to conduct position compensation on the clamping assembly, the grinding force is adjusted in real time through closed-loop feedback control, quick response is achieved, and the grinding efficiency is improved. A longitudinal damping vibration attenuation module and a transverse damping vibration attenuation module are arranged in the grinding assembly, damping force is changed through current, the influence of vibration on grinding force adjustment is reduced, the grinding wheel abrasion monitoring assembly can obtain abrasion data of abrasive particles on the surface of a grinding wheel through a laser detection module, and the abrasive particles can be replaced in time after abrasion exceeds a threshold value.

The invention relates to the technical field of state monitoring, in particular to a ship main transmission device wear state real-time monitoring and maintenance system which comprises a load path recognition module, an abrasive particle distribution monitoring module, a thermal field response judgment module, a crack evolution tracking module and a maintenance adjustment module. According to the method, the strain data of the front end and the rear end of the main shaft are subjected to time sequence comparison, so that the strain transfer trend in a transmission path can be dynamically captured, and path parts in an abnormal abrasive particle peak value state can be screened out in combination with the mapping relation between the number of particulate matters and the particle size grade; according to the method, a potential thermal response imbalance area in a local structure is identified by combining the change trend of the difference between the axial temperature rise rate and the radial temperature rise rate, meanwhile, pre-judgment of a crack initiation section is completed by combining the peak sudden change characteristic of the number of structural node strain fluctuation times, and real-time identification, trend study and judgment and risk early warning of the running state of the main transmission device are achieved. And timeliness and accuracy of maintenance response are improved.

The invention discloses a wear resistance detection method and equipment for a gantry machine tool spindle system, and relates to the technical field of machine tool spindle state detection.The method comprises the steps that when a spindle runs, torque and rotating speed signals are collected firstly, and friction power input energy is calculated; synchronously collecting a main shaft and lubricating oil feature set to establish heat loss energy, and calculating acoustic emission energy by using an acoustic emission array; executing oil detection to establish abrasive particle generation potential, and calculating equivalent wear energy to obtain a first path wear detection result; activating the ultrasonic sensor to obtain a second path of wear detection result; and outputting a wear resistance detection result after interactive authentication. The gantry machine tool spindle system wear resistance detection method solves the technical problems that the gantry machine tool spindle system wear resistance detection means is single, the wear state cannot be reflected in real time, only the local physical quantity can be captured, detection data are one-sided, and accuracy and reliability are insufficient, and achieves multi-dimensional real-time comprehensive detection of the gantry machine tool spindle system wear resistance. And the comprehensiveness, the accuracy and the reliability of the detection data are improved.

The present invention employs a configuration without a base material, and provides a base material-less abrasive material that flexibly deforms to conform to the surface of the object to be polished, especially if the surface has a curved shape, and has good polishing characteristics. The substrate-less abrasive material 1 of the present invention does not have a substrate, and a plurality of abrasive grains 2 are held in a dispersed state in a base portion 3 which contains a total of 60 volume% or more of at least one of the base components of resin and elastomer. The type A durometer hardness measured in accordance with the hardness test specified in JIS K7311-1995 is 50 to 80, the tensile strength is 70 to 250 MPa, and the tensile elongation is 10 to 360%.

The invention discloses a functional structure integrated optimization polishing pad capable of uniformly removing materials. The functional structure integrated optimization polishing pad comprises a polishing layer and an elastic layer, the polishing layer is composed of a plurality of protrusions, and the protrusions are arranged in a honeycomb shape. The elastic layer is of a concentric partition structure and comprises a soft area and a hard area. By designing surface patterns of the polishing pad, abrasive particle tracks on the surface of the workpiece are uniformly distributed; by designing the polishing pad structure, the contact pressure on the surface of the workpiece is uniformly distributed. The surface pattern and structure of the polishing pad are subjected to comprehensive optimization design, integrated optimization of the functional structure of the polishing pad is achieved, the abrasive particle motion trail and contact pressure distribution can be cooperatively regulated and controlled, and the material removal uniformity of the surface of a workpiece is improved.

The application relates to the technical field of coating preparation, in particular to a wear particle wear-resistant coating heat treatment method and a preparation device thereof, which comprises a main part, a release part and a preparation device; the main part comprises a mixing assembly, a quantitative assembly arranged in the mixing assembly and a shielding assembly arranged outside the quantitative assembly; the release part comprises a partition assembly arranged in the mixing assembly, a control assembly arranged outside the shielding assembly and a guide assembly arranged outside the control assembly; firstly, the crushed material is sent into the mixing assembly, then the material is proportioned through the quantitative assembly, the quantitative assembly and the shielding assembly are controlled to rotate, the shielding assembly is separated from the discharge port of the quantitative assembly under the resistance of the guide assembly, the material enters the partition assembly, the proportioning of the ceramic particles and the metal powder is realized, when a certain amount of material is accumulated in the partition assembly, the partition assembly releases the material into the stirring cavity A2, and the mixing and proportioning of the ceramic particles and the metal powder are realized.

An object of the present invention is to provide an abrasion powder collection method and an abrasion powder collection device capable of collecting abrasion powder while preventing aggregation of the abrasion powder.SOLUTION: A method for collecting abrasion powder of the present invention includes a collecting step of sucking and collecting abrasion powder obtained by pressing a rubber piece against an abrasion drum and rotationally abrading the rubber piece by a suction device, wherein in the collecting step, powder for preventing aggregation is supplied to a rotational abrasion surface between the abrasion drum and the rubber piece, and a supply flow amount of the powder for preventing aggregation is 0.5 to 6.0 (cm3 / min). A device for collecting abrasion powder of the present invention includes an abrasion drum configured to be capable of pressing a rubber piece, a suction machine for sucking abrasion powder, and a supply unit for supplying powder for preventing aggregation to a rotational friction surface between the abrasion drum and the rubber piece, in which the suction machine includes a suction nozzle, and the suction nozzle is disposed immediately below the rotational friction surface of the abrasion drum with the rubber piece.SELECTED DRAWING: Figure 1

1. Name of the design product: Ferrograph (double rotary). 2. Use of the design product: An instrument for depositing, collecting ferromagnetic wear particles in oil and removing oil and other contaminants by rotating centrifugal force, gravity and magnetic force. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The invention relates to a machining method and system for a hard and brittle material workpiece. In one aspect, the machining method comprises the steps that a viscous medium is applied to the to-be-machined surface of a workpiece; and the fixed abrasive tool makes contact with the to-be-machined surface and generates relative movement for grinding machining, in the grinding machining process, abrasive particles falling off from the fixed abrasive tool in the grinding machining process are captured by the viscous medium and suspended at the contact interface of the fixed abrasive tool and the workpiece, so that a free abrasive layer is formed, and the free abrasive layer is separated from the to-be-machined surface. And therefore, the abrasive particles in the free abrasive material layer perform in-situ grinding on the to-be-machined surface. Therefore, the cutter lines are reduced or even eliminated, and the surface machining quality of the workpiece is improved.

The invention relates to the field of machining modeling, in particular to a camshaft non-circular contour high-speed grinding surface topography dynamic modeling method, which comprises the following steps of: acquiring a mixed signal to obtain a source signal component corresponding to grinding wheel wear; signal features with high correlation with grinding wheel wear are selected to be combined with the grinding wheel abrasive particle wear area to jointly construct an abrasive particle wear online prediction model based on FAW-DELM; measuring the surface appearance of the grinding wheel, setting the grinding particle exposure height to obey normal distribution, calculating the grinding wheel grinding particle exposure height through the real-time grinding wheel grinding particle wear area, dynamically adjusting the mean value of the normal distribution, and combining the measured grinding particle space distribution calculation result to establish a grinding wheel surface appearance dynamic simulation model; establishing a single abrasive particle grinding motion trajectory equation considering vibration; and the grinding surface topography is generated in combination with the grinding wheel surface topography dynamic simulation model and the single abrasive particle grinding motion trajectory equation considering vibration. Dynamic analysis can be carried out, and the accuracy is high.

This invention discloses a metal flux-cored welding wire for wind turbines, comprising flux powder and a welding sheath. The flux powder is composed of the following components: Ni: 58%-80%, Cr: 10%-16%, Mo: 4%-12%, Nb: 1%-3%, Fe: 2%-14%, C: 0.1%-0.2%, Mn: 0.2%-0.5%, Si: 0.2%-0.5%, with the sum of the mass percentages of the above components being 100%. The welding sheath is made of Inconel 718 alloy strip. This invention also discloses a method for preparing and applying the metal flux-cored welding wire for wind turbines. This invention solves the problem of pitting corrosion and abrasive wear on the surface of high-speed gears in existing wind turbines, particularly in environments with high corrosion resistance requirements, such as offshore and desert environments with high wear resistance requirements, resulting in corrosion pits and wear microcracks.

The application discloses a wear resistance detection method and equipment for a gantry machine tool spindle system, and relates to the technical field of machine tool spindle state detection. The method comprises the following steps: when the spindle is running, first, torque and rotating speed signals are collected to calculate friction power input energy; the spindle and lubricating oil characteristic sets are synchronously collected to establish heat dissipation energy, and acoustic emission energy is calculated by using an acoustic emission array; oil detection is performed to establish abrasive particle generation potential, equivalent grinding energy is calculated to obtain a first wear detection result; an ultrasonic sensor is activated to obtain a second wear detection result; and after interactive authentication, a wear resistance detection result is output. The application solves the technical problem that the wear resistance detection means of the gantry machine tool spindle system is single, the wear state cannot be reflected in real time, only partial physical quantities can be captured, and the detection data is one-sided, the accuracy and reliability are insufficient, achieves multi-dimensional real-time comprehensive detection of the wear resistance of the gantry machine tool spindle system, and improves the technical effect of comprehensiveness, accuracy and reliability of the detection data.

Abrasive articles and associated methods are shown that include abrasive particles arranged in one or more symbols on a backing substrate. Examples include shaped abrasive particles arranged into one or more symbols. Other examples include one or more wear particles with a height less than other abrasive particles, such that when exposed, the wear particles indicate a wear condition of the abrasive article.

The application discloses a high-sharpness strong-self-sharpening bushing drill for ceramic matrix composite small-hole machining, which comprises a groove structure provided with a cutter base skeleton and composite particle size diamond abrasive particles brazed on the base skeleton, and the cutter base skeleton is mainly in a hollow cylindrical structure, a plurality of intersecting and uniformly distributed inner and outer grooves are designed on a working end, and the inner and outer grooves are all brazed with diamond abrasive particles, wherein the diamond abrasive particles in the inner and outer grooves can enhance the cutting capacity, and the particle size of the diamond abrasive particles in the inner and outer grooves is greater than that of the diamond abrasive particles on the outer circumferential surface of the working section (to ensure hole machining precision); when the diamond abrasive particles are abraded to cause the sharpness of the drill bit to decrease, the diamond abrasive particles in the groove structure start to fall off to participate in machining. The bushing drill structure design can keep the cutter in a high-sharpness state, improve the drilling quality and the service life of the bushing drill, and meet the requirements of high-efficiency, high-quality and low-cost machining of ceramic matrix composite small holes.

The utility model relates to the technical field of deburring devices, in particular to an abrasive flow deburring clamp which comprises a panel, a bottom plate and a plurality of middle sleeves, the middle sleeves are all arranged between the panel and the bottom plate, the middle sleeves are provided with containing spaces, the upper ends and the lower ends of the containing spaces penetrate through the upper ends and the lower ends of the middle sleeves respectively, the panel is provided with first through holes, and the bottom plate is provided with second through holes. A second through hole is formed in the bottom plate, a plurality of flow channels are formed in the edge of the containing space, and the tops of the flow channels penetrate through the top of the containing space. A plurality of products are placed in the middle sleeves at the same time and processed through the abrasive flow liquid polishing machine, batch deburring operation is achieved, due to the fact that each product is independently placed in the containing space of the middle sleeves, and the flow channels are formed between the middle sleeves, it is guaranteed that abrasive flow is evenly distributed, and the product quality is improved. And mutual contact and friction between products are avoided, so that surface scratching and bumping are effectively prevented, and burrs and burrs on complex parts such as cross holes can be more effectively removed.

The invention discloses a tool wear rule model construction method. The invention relates to the field of shield cutter wear rule research, and solves the problems that an existing method is complex in model construction, is easily interfered by working condition fluctuation in practical application, and is insufficient in prediction stability. The method comprises the following steps: acquiring wear loss data of a tool changing point of a practical engineering tool, and establishing a practical engineering wear rule model by using a K-means clustering and quadratic fitting method; based on a CSM model of approximate constant-section hob rock breaking force and a Rabinowicz abrasive wear equation, a theoretical model of a wear rule is established; establishing a blade yield strength change model for the blade yield strength in the theoretical model; and the blade width change model and the blade yield strength change model are added into the theoretical model to obtain a corrected tool wear rule model, and the model can provide accurate data support for tool replacement cycle planning in shield tunneling construction.

An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%.

The invention relates to the technical field of grinding and polishing, in particular to a corrosion-resistant and wear-resistant liquid slip ring for precise grinding and polishing. The slip ring comprises a static part and a rotating part which are made of polyether-ether-ketone, and a wear-resistant sealing assembly comprising a zirconia ceramic wear-resistant spacer bush and a fluororubber sealing piece. All flow passage components are made of PEEK materials, so that pollution of metal ions to grinding fluid is completely eradicated; the high-hardness and high-smoothness ceramic wear-resistant spacer bush is used as a core rotating pair, so that the abrasive wear resistance is greatly improved; a multi-layer sealing protection system composed of a static seal, a fluororubber framework oil seal dynamic seal and an auxiliary isolation structure composed of small gaps is constructed, particles can be effectively retarded, impact can be effectively buffered, and it is ensured that long-term, stable and clean grinding fluid transmission is achieved under the working conditions of strong corrosion and high abrasion.

The invention relates to the technical field of super-hard grinding tool preparation, in particular to a resin grinding wheel for hard alloy cutter polishing and a preparation method of the resin grinding wheel. Forming a bonding layer on the outer circumferential surface of the base body layer; forming an abrasive material layer on the outer circumferential surface of the bonding layer; wherein the abrasive material layer comprises the following raw materials in parts by weight: 45-55 parts of diamond abrasive particles, 12-18 parts of modified epoxy natural rubber, 3-5 parts of a sulfur-zinc oxide vulcanizing agent, 3-4 parts of a vulcanization accelerator, 20-30 parts of modified polyurethane and 1-3 parts of a nano dispersant, and the resin grinding wheel has the characteristics of low roughness and low grinding wheel wear ratio.

The application relates to the technical field of ball valve production and processing, and discloses a production and processing technology of a sealed wear-resistant ball valve, which comprises the following steps: base material pretreatment, wear-resistant bottom layer preparation, functional coating slurry preparation, functional coating coating, sealing surface strengthening treatment, intelligent pressure detection module integration, closed-loop control system assembly, hot isostatic pressing densification treatment, precision calibration and performance testing, surface passivation and packaging. In the application, the nano diamond particles and the chromium-based tungsten carbide composite powder in the functional coating slurry jointly construct a high-hardness wear-resistant framework, resist the abrasive wear and erosion of the sealing surface, the molybdenum disulfide serves as a solid lubricant and forms a transfer film on the friction interface during the working process, reduces the friction coefficient, realizes the self-lubricating effect, the epoxy-modified organic silicon resin serves as a bonding phase, firmly combines the functional components, and endows the coating with good toughness and bonding strength, so that the wear-resistant life and reliability of the ball valve sealing pair are synergistically improved under harsh working conditions.

This utility model relates to the field of EVA sheet technology and discloses a wear-resistant EVA sheet for automotive applications. It includes an EVA sheet body, with a first wear-resistant layer fixedly disposed on the outer side of the EVA sheet body. A second wear-resistant layer is fixedly disposed on the side of the EVA sheet body away from the first wear-resistant layer. The first wear-resistant layer is a chromium oxide coating, applied uniformly to the outer surface of the EVA sheet body using arc spraying, with a spray thickness of 0.6–0.8 cm. The second wear-resistant layer is also a chromium oxide coating, applied uniformly to the outer surface of the EVA sheet body using arc spraying, with a spray thickness of 0.6–0.8 cm. This wear-resistant EVA sheet for automotive applications features chromium oxide coatings in both the first and second wear-resistant layers, which exhibit good coating toughness, chemical stability at high temperatures, corrosion resistance, abrasive wear resistance, and anti-wetting properties, thus improving the wear resistance of the EVA sheet body. The epoxy coatings in the first and second corrosion-resistant layers have good adhesion and chemical resistance.

The invention provides a polyurethane composite material and a preparation method thereof, and a preparation method of a polishing pad, and belongs to the field of polymer foaming. The invention provides a polyurethane composite material. The polyurethane composite material comprises polyurethane, and EPDM (Ethylene-Propylene-Diene Monomer) and maleic anhydride grafted EPDM which are dispersed in the polyurethane, the mass of the EPDM is 5-20% of the mass of the polyurethane; and the mass of the maleic anhydride grafted EPDM is 2-10% of the mass of the polyurethane. EPDM can effectively absorb abrasive particle impact energy, reduce the local stress peak value and weaken the scraping effect, generation of scratches and microcracks on the surface of the SiC wafer can be reduced, the quality of the polished surface can be improved, micro contact stress can be slowly released, the abrasion rate is effectively reduced, and the service life of the polishing pad is prolonged; the maleic anhydride group of the maleic anhydride grafted EPDM enhances the interface bonding force between polyurethane and EPDM, and improves the overall mechanical stability and wear-resistant consistency of the material.

The invention discloses a profiling vibration polishing method and device for an aero-engine tenon connection structure, and belongs to the technical field of precision machining. The device comprises a driving and vibrating system, a profiling polishing execution system, a precise force control system and a polishing solution circulating system. The core of the method is that a profiling polishing tool matched with the tenon structure profile in a negative shape is adopted, and a flexible polishing pad is attached to the surface; constant pressure is applied to the tool through a precise force control system; meanwhile, the driving system drives the tool to perform high-frequency micro-amplitude linear reciprocating vibration; under the participation of free abrasive particles in the polishing solution, uniform, low-damage and high-efficiency polishing of the tenon tooth / mortise complex curved surface is realized. The problems of thermal damage, large residual stress, limited surface quality and the like caused by a traditional grinding / broaching process are effectively solved, the surface integrity and fatigue performance of the tenon structure can be remarkably improved, the process flexibility is good, and the method is suitable for nickel-based high-temperature alloy and other materials difficult to machine.

The invention relates to the technical field of engineering drills, and discloses a method for surfacing a wear-resistant alloy after carburization of a sliding engineering drill, which comprises the following steps of: carburizing an engineering drill bit leg, milling a groove at a large runway of a shaft neck of the engineering drill bit leg along the outside of the shaft neck, and removing rated carbon on the surface of the shaft neck of the engineering drill bit leg. The engineering drill bit leg shaft neck is machined and preheated through an induction coil, a machined arc groove is filled with cobalt-based powder in a surfacing mode, through plasma PTA welding, the engineering drill bit leg shaft neck is placed in heat preservation sand to be slowly cooled, then heat treatment quenching is conducted, and finally finish machining is conducted. According to the method, a carburized layer serves as a transition layer, the hardness difference between surfacing alloy and a base material is reduced, and stress concentration is reduced; the surfacing layer directly bears abrasion, a hard shell and tough substrate structure is formed, and the abrasive wear resistance, the impact wear resistance and the fatigue wear resistance are remarkably improved.

A diesel engine abnormal wear diagnosis system belongs to the technical field of diesel engine wear detection, and comprises a data acquisition and processing module, a model calculation module, a fault diagnosis module and a man-machine interaction module, the data acquisition and processing module is used for acquiring diesel engine lubricating oil temperature and metal abrasive particle concentration data in lubricating oil; the model calculation module is used for running a diagnosis model and fault prediction of the running state of the diesel engine; and the fault diagnosis module is provided with a fault rule base and is used for outputting a final diagnosis result according to the fault prediction result of the model calculation module and the fault rule base by fusing the real-time working condition of the diesel engine and the simulation model data of the diesel engine. The method achieves the purposes of recognizing the abnormal trend of the diesel engine in advance and avoiding sudden engine faults.