78results about How to "Increased wear and tear" patented technology

Coated abrasive articles comprise a backing and an abrasive layer, wherein at the abrasive layer comprises a reaction product of components comprising polyfunctional acrylate, alicyclic polyepoxide, and aromatic polyepoxide having an average epoxy functionality of at least 2.5.

The invention relates to a piecewise calculation method for a thermal power generating unit peak regulating energy consumption cost. According to the method, force outputting threshold values at different pitch peak stages of the thermal power generating unit are determined according to a nameplate parameter and a unit performance testing of the thermal power generating unit. The peak regulating process of the thermal and power generating unit is divided into three stages based on a running state and an energy consumption character of the thermal power generating unit. Aiming at differences of the running state at different pitch peak stages of the thermal power generating unit and from a point view of benefits of a heat-engine plant, the cost of loss, the additional cost of environment and the cost of oil investment in the thermal power generating unit are calculated on the basis of considering a coal fired energy consumption character, a piecewise function of the thermal power generating unit pitch peak energy consumption cost is constructed, and further a curve of the thermal power generating unit pitch peak energy consumption cost is obtained. The piecewise calculation method for the thermal power generating unit pitch peak energy consumption cost can provide a basis for economic operations of the heat-engine plant.

The invention relates to a friction material which comprises the following components in percentage by weight: 62-72% of copper, 6-15% iron, 2-6% of aluminum, 3-8% of tin, 1-5% of nickel, 3-10% of cyanite (Al2O3.SiO2), 2-7% of boron nitride, 8-16% of graphite and 1-4% of molybdenum disulfide. The process for manufacturing an aircraft braking disc made from the friction material comprises the following steps: mixing a mixture of the friction material, pressing and moulding, preparing a steel back, and pressurizing and sintering the aircraft braking disc. Compared with the prior art, the mechanical performance, the physical performance, the friction and wear resistance, the use reliability and the service life of the aircraft braking disc made from the friction material reach or exceed those of the imported aircraft braking pair, and the aircraft braking disc made from the friction material can completely meet the use requirement of the Boeing 737 aircraft.

The invention belongs to the technical field of hot rolling, and discloses a method for controlling orange peel reticulate pattern defects on the surface of strip steel. The method is characterized by comprising the following steps: adopting an SGB roll profile curve on a supporting roller of a hot rolling temper mill; adopting an SGW roll profile curve on a working roller. The process parameters of the temper mill are set as the rolling force of 200-250 tons, the unwinding tension of 9-12 tons, and the winding tension of 20-23 tons, the rolling reduction of straightening rollers is used in a straightening machine group, and a roller shifting strategy with constant frequency, variable step sizes and variable stroke is adopted. According to the method, through the application of the SGB and SGW roll profile curves, a specific smoothing process and the roller shifting strategy, local wear of working rollers is greatly reduced, and orange peel reticulate pattern defects on the surface of the strip steel are effectively overcome.

The invention belongs to the technical field of chips, and particularly relates to an optimization method aiming at NAND Flash main control chip Greedy garbage collection. Compared with the prior art,the method has the advantages that a 'one-full-one-erase 'trigger mode and a local retrieval search mechanism are added to the improved scheme to optimize the Greedy algorithm. Data is written into the last page of each flash memory block. Therefore, the NAND Flash control system can trigger the garbage collection algorithm, so that the storage space occupied by invalid data can be released in time, flash memory storage equipment can keep more available storage space for a long time as much as possible, and centralized triggering of the garbage collection algorithm is avoided.

The invention discloses a method for improving friction and wear performance of a thermal-sprayed Al2O3 ceramic coating. The method comprises steps as follows: a metal transition coating and an Al2O3 ceramic coating are sprayed onto a metal substrate sequentially with an atmospheric plasma spraying technology; the prepared Al2O3 ceramic coating surface is ground; powdery thiourea and powdery sodium molybdate are weighed, are placed in deionized water used as a solvent and are fully stirred to be completely dissolved, and an MoS2 solution is obtained; a ground Al2O3 ceramic coating sample is immersed in the MoS2 solution, the solution is sealed and then placed in a drying oven, the drying oven slowly heats the solution to 220 DEG C at the heating rate smaller than or equal to 3 DEG C/min, and the solution is kept at the temperature and placed for 48-72 h; and after the drying oven is cooled to the room temperature, the Al2O3 ceramic coating sample is taken out, and redundant MoS2 powder which is produced through a self-reaction on the surface of the sample is completely removed. The wear degree of the coating obtained with the method is greatly improved; and meanwhile, holes in the Al2O3 ceramic coating surface are effectively sealed through filling of the holes in the coating surface with the MoS2 powder.

The invention discloses a high-strength wear-resistant paint which is prepared from the following raw materials in parts by weight: 20-30 parts of tetraethoxysilane, 15-25 parts of methyl trimethoxysilane, 15-20 parts of calcium naphthenate, 3-5 parts of silica sol, 10-15 parts of crystallized silicon oxide, 7-13 parts of graphite powder and 15-20 parts of auxiliary material, wherein the particle size of the silica sol is 4-9 nm, the particle size of the crystallized silicon oxide is 25-35 mu m, the weight ratio of the silica sol to the crystallized silicon oxide is 2:(5-6), and the weight ratio of the tetraethoxysilane to methyl trimethoxysilane is (1-2):1. The high-strength wear-resistant paint is excellent in crocking resistance, good in adhesion property with a substrate, and lower in cost.

The invention discloses a breaking part abrasion-resistance device suitable for a hot mine machining device. The breaking part abrasion-resistance device comprises breaking end teeth and auxiliary breaking end teeth, wherein the breaking end teeth and the auxiliary breaking end teeth are distributed in a staggered manner. The breaking end teeth and the auxiliary breaking end teeth comprise tooth cores and tooth sleeves. The tooth sleeves are arranged outside the tooth coress. A plurality of sets of first transmission end bodies are arranged on the side end faces of the tooth cores. A plurality of sets of second transmission end bodies are arranged on the inner walls of the tooth sleeves. Any set of first transmission end bodies correspond to one set of second transmission end bodies, wherein the first transmission end bodies and the corresponding second transmission end bodies are located in the same axial position of the corresponding tooth core. By means of the breaking part abrasion-resistance device suitable for the hot mine machining device, the impact force and the friction force which are borne by the breaking end teeth and the auxiliary breaking end teeth in the working process can be effectively controlled, and therefore in the long-term working process, the abrasion degree of the breaking end teeth and the auxiliary breaking end teeth is effectively reduced, and the abrasion-resistance performance of a whole breaking part is obviously improved.

The invention provides a biopsy rotary cutting device, which comprises a dynamic sealing structure arranged on the outer side of an inner cutter tube; the dynamic sealing structure forms a cavity outside the inner cutter pipe; a sealing ring is arranged in the dynamic sealing structure; the cavity comprises a first cavity and a second cavity; an auxiliary pipe is arranged outside the inner cutterpipe; the auxiliary pipe is provided with a circulation structure; when the inner cutter tube moves to a first position along the axial direction of the inner cutter tube, the sealing ring is positioned at the outer side of the auxiliary tube, and the first cavity and the second cavity are communicated through the circulation structure; when the inner cutter tube moves to a second position along the axial direction of the inner cutter tube, the sealing ring is positioned at the outer side of the inner cutter tube, and the sealing ring blocks the first cavity and the second cavity. According tothe biopsy rotary cutting device, the atmosphere can be introduced to form the circulating airflow with better suction strength; the circulating airflow can more efficiently send the rotary-cut tissue of the corresponding position to a sample collector at the rear end, so that the sample yield is effectively improved.

The invention discloses a crystallizer, belonging to crystallizing devices, which structurally comprises a shell body of the crystallizer, wherein upper water outlets and upper water inlets are arranged on the upper part of the shell body of the crystallizer; lower water outlets and lower water inlets are arranged on the lower part of the shell body of the crystallizer; the upper water inlets and the lower water inlets are respectively two in quantity; the upper water inlets and the lower water inlets are symmetrically arranged; the amount of the upper water outlets is larger than the amount of the lower water outlets; and the lower water outlets and the lower water inlets are arranged in a staggered mode. Compared with the prior art, the crystallizer of the invention has the advantages that the temperature on the surface of cast ingots is reduced so that the tissues of the upper surfaces and the lower surfaces of the cast ingots are uniform; the cooling strength of a graphite plate on the crystallizer is enhanced, and the cooling strength on the lower surface of the crystallizer is reduced so that the upper and the lower cast ingots in the crystallizer can be simultaneously crystallized; the abrasion degree of the graphite plate on the lower surface of the crystallizer is improved to a certain extent; and the service life of the graphite plate is increased, and the like, therefore, the crystallizer has good popularization and application values.

The invention provides a method for calculating the deep peak regulation energy consumption cost of a coal-fired unit based on a plasma ignition technology. The method comprises the following steps: (1) calculating the unit depth peak regulation variable load loss cost according to the operation state difference of the plasma ignition coal-fired unit in different depth peak regulation stages; (2)calculating the plasma ignition cost of the deep peak regulation combustion-supporting stage; and (3) on the basis of considering the coal consumption characteristics, constructing the deep peak regulation energy consumption cost piecewise function of the plasma ignition coal-fired unit. The patent achievements provide a basis for economic operation of a thermal power plant adopting a plasma ignition combustion-supporting technology.

The invention discloses a novel biomass particulate fuel forming machine comprising a case. A smashing motor is mounted at the top of the case; a feeding pipe is arranged on one side of the smashing motor; a transverse rotating shaft is arranged in the feeding pipe; a helical blade is arranged on the transverse rotating shaft, and the transverse rotating shaft is movably connected with the smashing motor in an engaged mode through a gear; a feeding hopper is arranged above the feeding pipe; a solenoid valve is arranged in the feeding hopper; a pressing disc is fixedly connected to an inner cavity of the case through a fixing rod; a plurality of forming through holes are formed in the bottom of the pressing disc; a circular groove is formed in the pressing disc, and a fixing sliding grooveis formed in the inner side of the circular groove; and two pressing rollers are arranged in the circular groove. The novel biomass particulate fuel forming machine is simple in structure, equipment overload can be effectively prevented, the mold abrasion degree is decreased, the production efficiency is improved, and the service life is prolonged, so that the novel biomass particulate fuel forming machine has wide application prospects.

The invention discloses a supporting roll used for carrying out hot rolling on a 2250 leveling unit. The supporting roll comprises a roll barrel arranged in the middle and roll necks arranged at two sides, the roll barrel comprises a rolling area and harmful contact areas, the roll shape of the rolling area is a linear section, the rolling shapes of the harmful contact areas at the two sides are both VCR curves in the shape of a parabola, and the two VCR curves are arranged at the two ends of the roll barrel symmetrically by using the midpoint and the axis of the roll barrel as the original point and the X axis and using the Y axis as the symmetric axis. The design method for roll barrel roll shape of the supporting roll used for carrying out hot rolling on the 2250 leveling unit comprises the following steps that 1, a working roll is determined to be a plain-barrel roll; 2, the overall convexity of the roll barrel is determined; 3, the distance between the bending-starting position of the roll barrel and the midpoint is determined; 4, a VCR roll shape curve model of the harmful contact areas is determined; 5, the integrated shape of the roll barrel is determined. The supporting roll used for carrying out hot rolling on the 2250 leveling unit has the advantages of reducing the number of the harmful contact areas, improving the roll-bending effect, enabling contact pressure between rolls to be distributed evenly, improving strip shape quality and being small in working roll consumption, and can be widely applied to the technical field of hot rolling leveling.

The invention relates to a polishing pad trimmer and a polishing system. The polishing pad trimmer comprises a trimming arm and a rotating speed control component, the trimming arm comprises a plurality of rollers connected end to end, and the total length of the multiple rollers is larger than or equal to the radius of a polishing pad; and the rotating speed control component is connected with the multiple rollers and controls the rotating speed of each roller, and the rotating speed of the roller close to the center of the polishing pad is larger than the rotating speed of the roller close to the edge of the polishing pad. According to the scheme, the coincidence of the center zone height and the edge zone height of the polishing pad can be improved, and the surface topography is optimized.

The invention provides a combined type cold-rolled stretching-bending straightener, and belongs to the technical field of withdrawal and straightening equipment. The combined type cold-rolled stretching-bending straightener comprises a turning roller, an inlet tensioning roller set, a multi-roller straightening system, a stretching and straightening roller system, roller boxes, a machine frame, abending roller set, a straightening roller set, an outlet tensioning roller set and an elevator. The turning roller, the inlet tensioning roller set, the multi-roller straightening system, the stretching and straightening roller system, the bending roller set, the straightening roller set and the outlet tensioning roller set are sequentially arranged in the conveying direction of strip steel, themulti-roller straightening system, the stretching and straightening roller system, the bending roller set and the straightening roller set are installed on the machine frame, and the multi-roller straightening system, the stretching and straightening roller system, the bending roller set and the straightening roller set are provided with the roller boxes and the lower parts of the multi-roller straightening system, the stretching and straightening roller system, the bending roller set and the straightening roller set are connected with the elevator through lifting synchronous connecting rods.The combined type cold-rolled stretching-bending straightener can improve the scale breading effect on the surface of the strip steel, improve the acid pickling efficiency, reduce the acid consumptionamount in an acid pickling technology, can effectively improve the wear degree, reduce the risk of excessive withdrawal and straightening of welding lines, reduce the enterprise cost, and improve thesafety of equipment operation.

The invention belongs to the technical field of chips, and particularly relates to a Greedy garbage collection system for an NAND Flash main control chip. Compared with the prior art, the garbage collection system provided by the invention is high in reliability, simple to implement and high in collection efficiency, and is embedded into a main control chip of the NAND Flash. Compared with a general garbage collection module adopting a Greedy collection strategy, the main control chip embedded with the high-reliability and high-efficiency garbage collection system has the advantage that the working efficiency can be greatly improved on the premise that the high reliability is ensured.

The invention discloses a driving wheel road holding force and life detection device and a and road holding force and life detection method. The detection device comprises a driving wheel unit which comprises a supporting device, a pushing device, and a driving wheel assembly; a road surface simulation unit which is arranged below the driving wheel unit and comprises a first supporting part, a second supporting part and a roller assembly; and a control unit which comprises a main controller, a driving wheel control circuit, a brake unit controller and a pushing device controller; the road holding force and service life detection method comprises the following steps: adjusting the position of the driving wheel assembly to enable the driving wheel assembly to be in close contact with the rolling surface for simulating close contact between a driving wheel and a simulated road surface; and then the road holding force and the service life are measured by adjusting the brake unit. The device has the beneficial effects that different pavement conditions can be simulated; the effects of different anti-skid patterns can be inspected; the service life of the driving wheel can be tested; when the driving wheel starts to slip can be detected; and the error-tolerant rate of the system is improved.

The invention relates to the technical field of automobile detection auxiliary equipment, provides a wheel flaw detector auxiliary device based on a gear linkage principle. The auxiliary device comprises a bottom plate; a movable screw group is connected to the front side of the bottom plate; a fixed screw is connected to the movable screw group and penetrates the bottom plate; and the bottom of the fixed screw is fixedly connected with a driven gear. The central axes of the bottom plate, the movable screw group and the fixed screw are arranged at the same straight line. Four limiting seats are fixedly connected to the outer side of the bottom plate. According to the auxiliary device, when the movable screw group moves upward, the distance between clamp blocks is reduced to clamp a tyre; when the movable screw group moves downward, the distance between clamp blocks is increased to take out the tyre after detection completion. On the basis of the structure and process, the tyre can be clamped and fixed by the device; the operation becomes convenient and thus certain working time is saved; the accuracy of the detection result is improved and the work efficiency is enhanced.