329results about How to "Reduce grinding costs" patented technology

The invention discloses a preparation method of an activated carbon material for an electrochemical capacitor and belongs to the technical field of carbon material and microwave chemistry. The preparation method comprises the following steps of: using peanut shells as a raw material, processing the peanut shells by using a KOH solution and a potassium hydroxide alkali solution, transferring the peanut shells processed by the potassium hydroxide alkali solution into a corundum crucible, placing the corundum crucible into a microwave reactor for microwave heating and activation to obtain the activated carbon material for an electrochemical capacitor. According to the method, with peanut shells as a carbon source and potassium hydroxide as an activator, the activated carbon material is prepared by microwave-assisted heating of the potassium hydroxide activated peanut shells. The activated carbon material prepared by the preparation method is characterized in that its specific surface area is 990-1277m<2> / g, total pore volume is 0.47-0.63cm<3> / g, and the yield is 14.2-24.4%. The activated carbon material, which is prepared as an electrode material for an electrochemical capacitor, hasgood stability and excellent comprehensive performance.

The invention provides an abrasive which is prepared by the steps as follows: 0.5-2.5Mu meter of corundum (95-98 percent) sold in the market, silicon carbide, diamond or cubic boron nitride abrasive micro-powder are mixed with 2-5 percent of ceramic adhesive, thermally disposed under high temperature of 840-1200 DEG C and combined with the abrasive micro-powder by the ceramic combination phase to form the abrasive with microcrystalline structure, wherein, according to the weight percentage, the raw material of the ceramic adhesive comprises 5-20 percent of NaO, 10-25 percent of B2O3, 45-70 percent of SiO2, 13-17 percent 4-5 components of Li2O, MgO, K2O, CaO and ZnO; all raw materials are sequentially mixed, screened, smelted, quenched, dried, crushed, screened to prepare the sintered abrasive, the granularity, classification and application of which are consistent to that of the corundum, carborundum, diamond or cubic boron nitride abrasive. The abrasive changes the internal structure of the abrasive grains, thus changing the processing performance of the abrasive, improving the processing precision, processing quality, processing efficiency, prolonging the service life of the grinder, and reducing the processing cost of the grinding.

The embodiment of the invention discloses a wall surface grinding path planning method, device and equipment and a medium. The method comprises the steps that protruding points of a to-be-ground wallsurface are obtained, and the to-be-ground wall surface is divided into at least two areas; candidate protruding points are determined in the next area of the area where the current protruding point is positioned; if the area where the current protruding point is positioned comprises non-traversal protruding points, the first distance between the non-traversal protruding points and the current protruding point is compared with the second distance between the candidate protruding points and the current protruding point; the protruding point corresponding to the minimum distance value in the first distance and the second distance is determined as the next operation point of the current protruding point; and a wall surface grinding path is determined based on the current protruding point andthe next operation point of the current protruding point. According to the technical scheme, the problem that the grinding path of the grinding equipment covers the area which does not need to be ground at the present stage is solved, and the effects of optimizing the operation path of the grinding equipment, improving the grinding efficiency and reducing the grinding cost are achieved.

The invention discloses a vitrified bonded cubic boron nitride (CBN) grinding wheel for grinding titanium alloy, which comprises a basal body, grinding wheel blocks and bonding layers, wherein the grinding wheel blocks comprise the following raw materials in weight percentage: 40-80 percent of cubic boron nitride grinding material, 0-30 percentage of silicon carbide, 14-35 percent of ceramic binder and 6 percent of temporary binder; and the ceramic binder comprises the following raw materials in weight percentage: 15-25 percent of B2O3, 8-15 percent of Al2O3, 46-60 percent of SiO2, 2-8 percent of Li2O, 2-10 percent of Na2O, 2-10 percent of ZnO and 2-10 percent of AlN, and the refractoriness of the ceramic binder is lower than 700 DEG C. The vitrified bound cubic boron nitride grinding wheel can effectively overcome the defects of strong grinding force, high grinding temperature, serious grinding wheel bonding and the like caused during grinding the titanium alloy, and has the advantages of high thermal conductivity, good self-sharpening performance, high grinding efficiency, long service life, low cost and simple process.

A grinding processing center, in order to solve the problem of single function of the existing grinding machine, it includes a bed, a large carriage, a workbench, a column, a horizontal grinding head assembly and a vertical grinding head assembly, a lubrication system, and a control system. The control system includes The computer numerical control system and servo system mainly adopt the vertical and horizontal double grinding head structure with external memory, which can realize six-axis linkage, compact structure and high transmission efficiency, which can meet various grinding processing needs.

The invention discloses a comprehensive utilization method of graphite tailings. According to the invention, graphite tailings, quartz powder, and kaolin are adopted as raw materials, and are mixed according to a certain mass ratio. The mixture is grinded, water is added to the mixture, and the mixture is mixed; the mixture is aged, and is processed through pressure-molding; the molded material is processed through high-temperature calcining, such that feldspar-quality daily-use ceramics are produced. The required mass ratio of graphite tailings to quartz powder to kaolin is 50-75:5-35:15-45.The daily-use ceramics are characterized by high strength, good compactness, low water absorption, and small shrinkage. The ceramics are not easy to deform.

The invention discloses a machining method for an inner ring and an outer ring of a conical roller bearing, and relates to a bearing machining method. The method is used for solving the problems that in existing bearing machining, detection omission is prone to occurrence in steel material detection, deformation is large after thermal treatment, grinding amount increase exists, grinding efficiency is reduced, product quality can be not ensured easily, and manufacturing cost is increased. The method includes the steps of firstly, conducting nondestructive examination of steel materials; secondly, cutting off examined steel materials; thirdly, forging an inner and outer one-piece sleeve ring; fourthly, conducting annealing; fifthly, lathing the inner and outer one-piece sleeve ring; sixthly, quenching the lathed inner and outer one-piece sleeve ring; seventhly, separating the sleeve ring into an inner ring and an outer ring; eighthly, conducting chamfering; ninthly, grinding the inner ring and the outer ring. The thermal treatment deformation is greatly reduced, the grinding residual amount is decreased, and grinding efficiency is improved; the method is suitable for machining the inner ring and the outer ring of the bearing.

The invention discloses a method for performing fine sieving, regrinding and bulk flotation on low-level silicon calcium collophanite. The method comprises the following steps: finely grinding the low-level silicon calcium collophanite, adding water to prepare original ore pulp; sieving the grinded original ore pulp by a fine sieve; regrinding materials on the sieve, then adding water to prepare original ore pulp, putting the original ore pulp into a floatation device together with materials under the sieve, performing direct rough floatation so as to obtain under-sieve product direct floatation roughing concentrate and tailings; performing reverse floatation on the under-sieve product roughing concentrate so as to obtain under-sieve reverse floatation recleaning concentrate and tailings. Compared with a two-section continuous ore grinding technology, the method provided by the invention can be used for improving the floatation condition, and reducing the recovery loss caused by fine fraction mechanical entrapment in the floatation operation on one hand, and can be used for reducing the energy consumption of two-section ore grinding and further reducing the ore separation cost on the other hand. The method provided by the invention can play a favorable floatation effect, and can achieve the industrial production of purification of low-level silicon calcium collophanite easily.

The invention relates to the technology of microbial leaching, in particular to a method for leaching low-grade phosphate ore from ferrous oxide thiobacillus obtained by sampling and separating in the acid puddle of Hubei Tonglushan copper ore. The method comprises the following steps: (1) sampling; (2) enrichment and separation and acclimatization of bacterial strains; and (3) phosphate leaching. The method has the advantages that 1. the bacterial strains has high activity and good endurance, and the phosphate leaching rate is high; 2. the cost is low, the cost for making up nutrient solution by a large number of expensive drugs is reduced, and a phosphorus compound does not need to be additionally added to the liquid nutrient medium; 3. the self-associated iron pyrite of the phosphate ore and phosphorus in the phosphate ore are sufficiently used as the energy substances and the nutrients for bacteria growth, which is beneficial to the circulation and the high-efficiency utilization of the associated resources in the phosphate ore; and 4. the method is friendly to the environment: the usage amount of the acid bacterial liquid is low, which is beneficial to reducing environmental pollution.

The invention provides a pneumatic grinding device for automobile universal joints, which includes a feeding device, a grinding device and a discharging device. The grinding device includes a biaxial drive mechanism, a positioning grinding mechanism and a grinding rotation mechanism. The grinding rotation mechanism is arranged between the feeding device and the grinding rotation mechanism. Between the discharge devices, the dual-axis drive mechanism includes an X-axis drive mechanism and a Y-axis drive mechanism. The Y-axis drive mechanism is connected to the X-axis drive mechanism. The positioning and grinding mechanism is set on the Y-axis drive mechanism, and the X-axis drive mechanism drives the Y-axis The driving mechanism moves back and forth, and the Y-axis driving mechanism drives the positioning and grinding mechanism to move left and right. Under the control of the control system, the present invention performs precise grinding in a three-in-one manner. With the progress of the grinding process, the surface area and angle of the workpiece will also change, and the angle of the grinding tool is continuously adjusted through rotation, lifting and translation to better It adapts to the entire grinding process of the workpiece to adapt to different curved surface structures, ensuring the accuracy of the grinding angle and product quality.

The invention discloses a new mineral separation method suitable for separation of hard-separation micro-fine particle magnetic iron ores. The new mineral separation method adopts a process comprising the steps of carrying out two-stage grinding on raw ores, carrying out low-intensity magnetic separation, obtaining ore concentrate through reverse flotation and single-stage roughing, regrinding middlings, carrying out the low-intensity magnetic separation and carrying out the reverse flotation; two-stage low-intensity magnetic separation ore concentrate is obtained through the process by adopting a method comprising the steps of stage grinding and stage low-intensity magnetic separation tailings discarding; qualified iron ore concentrate can be obtained in advance by carrying out a cationic collector reverse flotation technology on the two-stage low-intensity magnetic separation ore concentrate under the situation that the granularity is roughened; a regrinding and low-intensity magnetic separation technology is carried out on reverse flotation middlings, the cationic collector reverse flotation technology is carried out on three-stage low-intensity magnetic separation ore concentrate, and thus the iron concentrate grade is increased. According to the new mineral separation method disclosed by the invention, ore concentrate is obtained in advance as the reverse flotation is carried out by independently adopting a cationic collector under the situation that a depressor DF is not added, adding points of medicament are reduced, the manual operation difficulty is reduced, and the cost of mineral separation medicament is reduced; since the ore concentrate is obtained in advance through the reverse flotation, three-stage ball milling material amount is reduced, the ore grinding cost is greatly reduced, and the effect of extracting iron and reducing the energy can be achieved.

A machine, method and tooling to precision cold-form roller blanks for anti-friction bearings. The machine is a multistage progressive former using floating die cavities to enable simultaneous shaping of the ends of the roller with high accuracy and without flash. The tools and staged forming create an improved roller with an advantageous grain pattern and devoid of structural defects previously attributable to the presence of sheared end face material in the radiused corners of the blank and flash at its mid-section.

The invention provides a method for preparing a mesoporous carbon material for an electrochemical capacitor, and belongs to the technical fields of carbon materials and microwave chemistry. In the method, peanut shells are taken as a carbon source, zinc chloride or phosphoric acid is taken as an activating agent, and the mesoporous carbon material is prepared by one step of activating the peanut shells through microwave-assisted heating; and the obtained mesoporous carbon material has the specific surface area of between 1,307 and 1,552m<2> / g, the total pore volume of between 0.67 and 1.83cm<3> / g, and the average pore size of between 2.06 and 5.02nm; non-micropore volume is 62.7 to 99.2 percent of the total pore volume; and the yield is 32.3 to 44.9 percent. The carbon source is a renewable agricultural waste, and has the characteristics of low price and high availability; the microwave heating has the advantages of uniformity, quickness and energy conservation; and the obtained mesoporous carbon serves as a material for the electrochemical capacitor, and has high stability and excellent comprehensive properties.

The invention discloses a wandering star wheel, belonging to the technical field of sapphire processing. The wandering star wheel consists of a main wheel and sub-wheels, wherein teeth matched with grinding equipment are arranged on the outer circumference of the main wheel; holes matched with the external diameters of the sub-wheels are formed in the main wheel; and other holes for the accommodation of workpieces to be processed are formed in the sub-wheels. In comparison with the prior art, during the grinding of the wandering star wheel, the sub-wheels rotate in the main wheel, so that the processed workpieces are driven to self-rotate; in such a way, the grinding is more uniform; after the grinding, the indexes such as TTV (Total Thickness Variation) and Warp for the surfaces of wafers can reach requirements; the wandering star wheel is skillful and rational in design; and in addition, the problem of manufacturing multiple diecarriers during the grinding ofn various nonstandard pieces is solved, and the grinding cost is decreased greatly.

The invention discloses an anti-cleavage suspended grinding fluid for a gallium oxide wafer and a preparation method thereof. The fluid is prepared from aluminium oxide micropowder, a dispersing thixotropic agent, a surfactant, kerosene, an alkane, a pH value conditioning agent, an antifoaming agent, a bactericide and a cleaning auxiliary agent. The anti-cleavage suspended grinding fluid is preferably obtained through a large amount of experiments. The grinding fluid is good in stability, and is applicable to rough grinding and smooth grinding of the gallium oxide wafer. The material removal speed is fast, and the wafer surface is smooth and does not have obvious scratches or pits. The grinding fluid is capable of reducing mechanics expansion effect during grinding on surface micro cracks, stress damage layers and other defects left after cutting is performed , is capable of effectively inhibiting cleavage defects during grinding of the gallium oxide wafer, also is low in cost and beneficial for popularization application, and overcomes many disadvantages in the prior art.