986 results about "Quenching" patented technology

The invention discloses a production method of a high-performance sintered neodymium-iron-boron magnet. The production method comprises the steps of rapid quenching flaking, hydrogen decrepitation mixing, magnetic field forming, multi-stage treatment and composite coating. A nanocrystalline sheet is prepared through a rapid quenching technology, and uniform distribution of a grain boundary phase and rare earth elements is achieved through hydrogen decrepitation and material mixing; forming in a strong magnetic field and applying high pressure to improve the orientation degree; through high-temperature sintering, medium-temperature annealing and low-temperature aging treatment, magnet densification, grain boundary phase reconstruction and a magnetic domain structure are optimized; and finally, the corrosion resistance is improved by adopting a composite coating. The high-performance sintered neodymium-iron-boron magnet produced by the method comprises a main phase alloy, a grain boundary phase additive and a rare earth supplementary phase. Through low-oxygen nanocrystal preparation, grain boundary coordinated regulation and green process integration, compatibility of high performance, low cost and environmental protection is realized, and sustainable development of the rare earth permanent magnet material is promoted.

The invention relates to the technical field of automatic control, in particular to a monitoring method and system for synthesizing ceramide based on alpha-hydroxy fatty acid, and the monitoring system for synthesizing ceramide based on alpha-hydroxy fatty acid comprises a raw material feeding module, a reaction control module, a quenching-crystallization joint control module and a data integration module; carrying out dynamic weighing monitoring on the raw materials based on the received synthesis instruction, and starting a reaction kettle according to weighing data; performing multi-dimensional data acquisition in real time according to the set reaction data, and performing dynamic feeding control according to the set reaction data; when the TLC detection substrate reaction is completed, the cooling process and the crystallization process are regulated and controlled in real time according to the reaction data until the end point judgment standard is met; according to a received synthesis completion instruction, product quality data is obtained, a monitoring data packet is generated, the synthesis instruction is marked and then stored, process control is accurately monitored and controlled, and the purity and crystal form of the product are ensured.

The invention discloses a purification method for removing quartz inclusion, which comprises the following steps: calcining a quartz sand raw material at high temperature for a certain time, then taking out and quickly putting into cold water for cold quenching; dehydrating quartz sand, feeding into a microwave reactor, heating to a set temperature, and keeping for a period of time; after the reaction is finished, cleaning the quartz sand with ultrapure water; filling the quartz sand into a high-temperature and high-pressure reactor, introducing supercritical carbon dioxide and hydrogen fluoride mixed gas, and keeping the temperature and the pressure for a period of time; and after the reaction is finished, discharging gas to obtain the high-purity quartz. Through two-stage heat treatment, a channel between gas-liquid inclusions in quartz particles and the outside can be efficiently opened, and meanwhile, the supercritical method ensures that impurities in the inclusions can be effectively dissolved out; the treatment time is short, the required temperature is low, the acid consumption is less than 10%, and the method has the advantages of high efficiency and low cost.

The invention discloses a production process of tempered laminated glass, which belongs to the technical field of tempered glass, and comprises the following steps: strictly screening raw sheets, carrying out three-zone gradient tempering, namely, mutually combining 680-700 DEG C temperature zone temperature control and 8-12kPa gradient wind pressure quenching, and precisely compounding by using a PVB interlayer to obtain the tempered laminated glass. 23 DEG C / 30% RH pre-balancing, 0.5 mm vacuum positioning and 120-140 DEG C rolling initial pressing are combined, and then high-pressure kettle staged curing, namely, the process of heat preservation for 120 minutes at 1.2 MPa / 135 DEG C and the process of gradient cooling at the temperature smaller than or equal to 15 DEG C / h are combined, so that the finally prepared tempered glass product has high optical performance, namely distortion smaller than or equal to 0.1 mm / mm, high impact resistance, namely no penetration in 1m steel ball falling and excellent weather resistance; degumming is avoided in the environment of 85 DEG C / 85% RH / 500 h, and accurate control over the whole process from materials to finished products is achieved. Therefore, the production process of the tempered laminated glass solves the technical problem of how to improve the production efficiency of the tempered laminated glass.

The invention discloses a polyurethane foaming material with a gradient density skin-core structure and a preparation method thereof, and the preparation method comprises the following steps: step 1, injecting a mixed polyurethane foaming raw material into a preheated foaming mold, and closing the mold; step 2, synchronously starting a mold rapid cooling system and an air pressure balance system for foaming and curing when the reaction raw materials are injected; and step 3, taking out the product after curing, standing at room temperature, and curing to obtain the polyurethane foam material. The surface temperature of the mold is suddenly reduced through quenching temperature control so as to form a compact skin layer, and an in-mold pressure curve is controlled by using an air pressure balance program so as to accurately regulate and control foaming of a core layer. The prepared material has a continuous gradient density structure, the skin layer density is high, the core layer density is low, a transition interface with strong binding force is arranged between the skin layer and the core layer, and the extreme performance combination of'hard outside and soft inside 'is successfully realized.

The multi-field coupling collaborative modeling and parameter autonomous intelligent decision-making method for the roller type quenching process comprises the steps that four key process parameters including the nozzle flow, the water ratio, the roller gap distance and the plate passing speed are collected and subjected to normalization preprocessing, and a training set and a test set are divided; the four key process parameters of the training set serve as input, the water-cooling convective heat transfer coefficient and the phase change plasticity coefficient serve as output, a BP neural network is trained, and the workpiece surface water-cooling convective heat transfer coefficient and the material internal phase change plasticity coefficient are predicted through the trained BP neural network; a multi-field coupling model composed of a temperature field, a structure phase change field and a stress-strain field is solved, and quantitative calculation of quenching core quality indexes is achieved; by taking water consumption minimization as a target, constructing a nonlinear optimization model under the condition that multiple core quality index constraints of the plate temperature, the outlet hardness and the plate shape are met; and performing global optimization on the optimization model by adopting a differential evolution algorithm, and autonomously deciding an optimal process parameter set value.

The invention discloses fluoride-salt-free and nitrate-free medium-temperature semitransparent glaze for steel plate enamel as well as a preparation method and application of the medium-temperature semitransparent glaze, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, potassium feldspar, anhydrous borax, sodium carbonate, titanium dioxide, monopotassium phosphate and zinc oxide according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and firing adaptability, is suitable for a steel plate matrix, has the firing temperature of 800-840 DEG C and the firing time of 20-30 minutes, and is suitable for a steel plate. The method can be used for producing green and environment-friendly enamel products.

The invention relates to the technical field of tempered glass production, in particular to a tempered glass air grid quenching blowing control method which comprises the following steps: step 1, parameter acquisition: acquiring key parameters of tempered glass to be quenched and current state parameters of an air grid in real time through a sensor group; wherein the thickness sensor adopts a laser displacement sensor, is arranged in front of an air grid inlet, collects thickness data of different positions of glass, takes an average value as a thickness parameter d, and ensures that the data can reflect the overall thickness condition of the glass; according to the tempered glass air grid quenching air blowing control method, the air blowing pressure, the air speed, the air blowing angle and the air grid distance of the air grid can be dynamically adjusted by collecting parameters such as the thickness, the temperature distribution and the transmission speed of glass in real time and combining an intelligent control algorithm; accurate control over the quenching process of the tempered glass is achieved, and the stress distribution uniformity and flatness of the glass are improved.

The invention discloses a method for regulating and controlling the strength and plasticity of a FeMnCrCo-series high-entropy alloy based on pre-introduction of multi-dimensional crystallography defects, and relates to the technical field of high-entropy alloy materials. Cleaning in the vacuum induction furnace; performing vacuum melting; casting is conducted; carrying out homogenization treatment; forging treatment; carrying out six-pass hot rolling treatment; first-pass cold rolling treatment; first low-temperature annealing treatment; performing second-pass cold rolling treatment; carrying out secondary low-temperature annealing treatment; third-pass cold rolling treatment; and annealing treatment. Inter-pass annealing treatment is introduced into a cold rolling link of a traditional plate preparation process, and water-cooling quenching is assisted. According to the method, the multi-dimensional crystallographic defects generated in the cold rolling process are reserved in an initial microstructure of the alloy before a mechanical property test, the crystallographic defect type, density and spatial distribution in the initial microstructure of the alloy are regulated and controlled, a multi-dimensional defect strengthening mechanism is constructed, and good strength and plasticity matching of the alloy is achieved.

The invention particularly discloses a deep removal method for lattice impurities and inclusion in high-purity quartz sand. The method comprises the steps of calcination water quenching, ultrasonic acidification, first-stage roasting, second-stage roasting, secondary water quenching, hot-pressing acid leaching and cleaning and drying. According to the method, through calcination water quenching, ultrasonic acidification, two-stage roasting, secondary water quenching and hot-pressing acid leaching, lattice impurities and tiny inclusion bodies in the high-purity quartz sand can be deeply removed, the purity of the purified quartz sand reaches 4N8 and even 5N grade or above, and then the technical problems existing in the prior art are solved.

The utility model discloses a water residue and water quenching prevention system for polycrystalline silicon broken material packaging, and particularly relates to the technical field of polycrystalline silicon processing, the system comprises an integrated control unit, a water quenching module, a water residue and water treatment module, a packaging module, a crushing module, a screening module, a drying module, a quality detection module and an environmental adaptability module. According to the water quenching system for preventing moisture residue in the polycrystalline silicon broken material packaging, the utilization rate of materials is improved through efficient crushing and accurate screening, the waterproof performance of products is enhanced through vacuum degassing and automatic humidity control, the consistency of product quality is ensured through automatic quality detection, and the production efficiency is improved. And the safety of the system is improved through integrated control and an emergency discharge device. The characteristics jointly improve the production efficiency, and ensure the stability and reliability of the product in a changeable environment.

The invention discloses a multi-component atomic level oxide solid solution integrated electrode for electrolyzed water and a preparation method thereof, and belongs to the field of metal material surface plating. The electrode is composed of a gas diffusion layer, a nano array substrate and an atomic level oxide solid solution catalyst layer. The preparation method comprises the following steps: constructing a nano array microreactor on the surface of the gas diffusion layer; the method comprises the following steps: driving an atomic hierarchy solid solution to reconstruct by utilizing an array confinement effect through combination of precursor directional spraying and a heat treatment-rapid quenching process, and constructing a three-dimensional conformal ionomer network on the surface of the atomic hierarchy solid solution; and performing gold plating treatment on the back side of the electrode. Through the synergistic effect of spatial constraint and thermodynamic regulation of the nano microreactor, the traditional electrode interface mismatch bottleneck is broken through, and while precise construction of atomic-scale active sites is realized, the mechanical stability and oxygen evolution reaction kinetics of the electrode are improved. The preparation process has the advantages of controllable flow, strong large-scale expansibility and good industrial preparation prospect.

The invention discloses a method for separating and recycling a silver-copper composite material through selective interface oxidation. The method comprises the following steps that the material is crushed and sheared, and a crushed material is obtained; the crushed material is pretreated and then fed into an oxidation fluidized bed, an internal oxidation reaction is conducted in a gas phase at the temperature of 400-700 DEG C and the oxygen pressure of 0.2-0.6 MPa, the reaction time is 20-60 h, and a high-temperature material is obtained; quenching the high-temperature material to generate stress cracks on an oxidation interface to obtain a cooled material; and stripping the cooled material under the mechanical action to obtain a recycled copper material and a recycled silver material, oxidizing the electrical contact material or leftover materials of the electrical contact material in the oxygen atmosphere to oxidize an interface between the silver-copper composite materials to form an oxidation film, separating the two materials of the silver-copper composite materials under the quenching and mechanical actions, and then, obtaining the recycled copper material and the recycled silver material. The method is high in recovery rate, high in recovery purity and environment-friendly.

A multistage, multiphase heat treatment method for increasing the toughness of a high-strength low-alloy steel workpiece. Using a multistage, multiphase quenching process causes the steel workpiece to ultimately obtain a multiphase structure of strip bainite, lath bainite, lath martensite, and residual austenite. The forming sequence of the phases in the multistage, multiphase quenching process is sequentially strip bainite, lath bainite, and lath martensite. Forming a portion of the strip bainite in advance promotes nucleation and growth of the lath bainite, shortens a process time, increases production efficiency, and increases the toughness of the high-strength low-alloy steel workpiece.

A rolling method for reducing a carbide network rating of high-carbon chromium bearing steel, sequentially comprising: billet heating, descaling, rough rolling, intermediate rolling, controlled rolling, intermediate material segmentation, finish rolling, controlled cooling, and cooling on a cooling bed. By improving the rolling process and using a "segmentation before cooling" method to adjust the rolling procedure, the problems that the temperature is too low due to water quenching after rolling, the hardness of a rolled material is high, and normal operation of a shearing device cannot be guaranteed are solved, and the effect of reducing the carbide network rating is achieved, thereby avoiding the additional work procedures and costs caused by the non-compliant carbide network of the rolled material.

The invention discloses a Joule heat heating-based YAG transparent ceramic rapid welding method, and belongs to the technical field of welding. According to the method, a Joule heat ultra-fast high-temperature heating method is utilized, and a glass solder is adopted for connecting YAG transparent ceramics, so that a joint with high strength and high light transmittance is obtained. The method specifically comprises the following steps: carrying out grinding and polishing treatment on the YAG ceramic surface; the preparation method comprises the following steps: weighing oxide raw materials according to the composition of the glass material, uniformly mixing, and preparing glass powder by adopting a melting-water quenching method; preparing the glass powder into slurry, and uniformly coating the surface of the transparent YAG ceramic with the slurry; and placing in an ultra-fast high-temperature sintering furnace for connection. According to the Joule heat ultra-fast high-temperature connection YAG transparent ceramic, connection is completed within one minute through the fast heating and cooling process, a connector with high strength and high light transmittance is obtained, and the production efficiency is greatly improved.

The invention discloses a method for improving the thermal stability of a gradient nanocrystalline structure, and belongs to the technical field of metal material processing. According to the method, Mg-RE series alloy is used as a matrix, a matrix alloy ingot is heated for solution treatment, surface strengthening is carried out after water quenching and cooling, a gradient nanocrystalline layer is formed on the surface layer of an alloy sample, finally, the alloy sample is transferred into an aging oven for low-temperature aging, and cooling is carried out, so that the magnesium alloy is obtained. According to the method, the thermal stability of the magnesium alloy gradient nanocrystalline is improved through a synergistic strategy of component design and low-temperature aging, so that the grain growth rate of Mg-RE alloy gradient nanocrystalline structures treated by various different surface strengthening methods in a high-temperature environment can be remarkably reduced; the core bottleneck that a traditional magnesium alloy gradient nanocrystalline material is poor in thermal stability and single in applicable surface treatment method is solved; and the process does not need special equipment, can be seamlessly connected with various existing magnesium alloy surface strengthening production lines, and is low in process cost, simple and convenient to operate and easy to industrially popularize.

The utility model relates to the technical field of vacuum oil quenching furnaces, and discloses a vacuum oil quenching furnace with a quenching cooling protection function, the vacuum oil quenching furnace comprises a quenching box, sliding grooves are formed in the four sides of an inner cavity of the quenching box in a penetrating manner, sliding blocks are slidably mounted in the multiple sliding grooves, and material placing plates are arranged among the multiple sliding blocks; connecting cylinders are fixedly mounted on the four sides, close to the sliding blocks, of the material placing plate correspondingly, and elastic pieces are arranged in the multiple connecting cylinders correspondingly; by arranging a connecting cylinder and a clamping column, the material placing plate can be fixed and detached, the material placing plate can be conveniently replaced or cleaned, and it is guaranteed that the surface of the material placing plate is smooth and free of pollution, so that it is guaranteed that metal materials are evenly heated in the quenching process, the quenching effect is improved, the downtime is shortened, and meanwhile operation safety and stability are guaranteed; the impurity removal brush can be rapidly replaced, it is ensured that the impurity removal brush always has the optimal cleaning effect, and impurity accumulation is prevented from affecting the quenching quality.

The invention discloses a method for improving the mechanical property of anchor rod steel, and belongs to the technical field of steel and iron materials. The method comprises the following steps that (1) on the basis of traditional anchor rod steel components, the element content in steel is optimized through microalloying design; (2) the steel billet is heated to 1150 DEG C to 1250 DEG C; finish rolling is conducted at the temperature of 00-900 DEG C, and the deformation temperature and the accumulated deformation amount in the rolling process are strictly controlled; cooling is conducted after rolling, and the cooling rate is controlled to range from 15 DEG C / s to 25 DEG C / s; (3) after rolling, heating to 850-900 DEG C for quenching, keeping the temperature for 15-30 minutes, and then quickly cooling; and tempering at 200-250 DEG C, and preserving heat for 1-2 hours. The strength and toughness of the anchor rod steel can be remarkably improved, collaborative optimization of the strength and plasticity is achieved, meanwhile, by improving the technological process, the production cost is reduced, the production efficiency is improved, and the method is suitable for large-scale industrial production of the high-strength anchor rod steel.

The present invention relates to a high-strength and high-plastic quenching-partitioning steel based on Mn chemical inhomogeneity and a preparation method thereof, which belongs to the field of third-generation advanced high-strength steel; its chemical composition mass percentage is: C: 0.2-0.4%, Mn: 2-5%, Si: 1-3%, P: ≤ 0.005%, S: ≤ 0.005%, and the balance is Fe and unavoidable impurities. By optimizing process parameters such as critical annealing temperature and time, it is ensured that a reasonable volume fraction of poor / rich Mn zone and Mn content are obtained; and by utilizing rapid heating and extremely short austenitization and heat preservation, the diffusion of Mn element is suppressed, the uneven distribution of Mn is retained, and a high-temperature austenite consisting of polygonal Mn-poor austenite and polygonal Mn-rich austenite is formed. Due to the uneven distribution of Mn elements, the martensitic phase transformation temperature range is increased, and martensitic lath refinement is achieved using a lower quenching temperature. The present invention achieves martensitic lath refinement while retaining more residual austenite, and the yield strength of the material is significantly improved.

The utility model discloses a circular plain film quenching anti-deformation work fixture which comprises two supporting discs, a plurality of supporting rods and fastening nuts, the supporting discs are arranged at the two ends of the supporting rods in a sleeving mode and are connected in a fastening mode through the fastening nuts, and the two supporting discs are kept parallel when arranged on the supporting rods in a sleeving mode; and the plurality of supporting rods form a fixed supporting rod of the circular flat sheet. The utility model provides the anti-deformation work fixture for quenching of the round flat sheet, the support rod is used for fixing and clamping, the problem of buckling deformation or ovality increase is effectively solved, the fixture is easy to fix and convenient to operate when being put in a furnace, and the production efficiency is improved.

The invention belongs to the field of engineering materials, and discloses an ultrahigh-strength steel plate with yield strength of 1500 MPa for engineering machinery and a manufacturing method of the ultrahigh-strength steel plate. Through reasonable component design and combination with proper rolling reduction, finish rolling temperature and quenching temperature, the microalloying effect of Nb, V and Ti is fully utilized, ultra-fine grain martensite is obtained, the effects of fine grain strengthening, precipitation strengthening and dislocation strengthening are fully exerted, the effects of C and alloy are exerted, and the Q1500 steel plate with the low carbon equivalent CEV is obtained. By means of the process, the high-strength steel plate which is good in production performance, easy to weld, 5-20 mm thick, 1500 MPa in yield strength and used for engineering machinery can be stably produced, and the high-strength steel plate is widely applied to large engineering machinery equipment such as crawler cranes and wheeled cranes.

The present invention discloses a 30GPa%-level vanadium microalloyed lightweight steel, its preparation method and its composition design method. The mass percentages of the vanadium microalloyed lightweight steel are as follows: C: 0.15 - 0.25%, Mn: 4.5 - 5.5%, Si: 0.2 - 0.5%, Al: 1.5 - 2.5%, V: 0.05 - 0.20%, and the balance is Fe and inevitable impurities. The direct quenching temperature of the cold-rolled sheet is 730°C and the holding time is 3 minutes. The present invention innovatively formulates a reasonable criterion based on the hot rolling and heat treatment processes through high-throughput calculation of the integrated material thermodynamics and thermophysical properties, and optimally designs the composition of the lightweight steel, solving the technical problem of how to scientifically and reasonably design the composition of the lightweight steel so that it can achieve both a tensile strength of not less than 980 MPa, an elongation of not less than 30%, and a density of not higher than 7.65 g / cm 3 ³ under the condition of direct quenching. The present invention improves the comprehensive mechanical properties of the lightweight steel on the premise of ensuring a low alloying level, and realizes the integrated computational composition design of a new type of high-performance lightweight steel.

The invention belongs to the technical field of metal processing technologies, and particularly relates to a gradient heat treatment steel strengthening and toughening technology optimization method which comprises the steps that a cooling tank is arranged, a vertical channel is formed in the inner side face of the cooling tank and communicates with a liquid layer in the cooling tank and the outer portion of the cooling tank, and quenching liquid is added into the cooling tank till the vertical channel is submerged; a proper amount of quenching oil is added, so that the quenching liquid and the quenching oil are layered, and a lower liquid layer and an upper oil layer are formed respectively; gradient heating is conducted on a target area of the workpiece in a local heating mode, and austenitizing is achieved; after the workpiece is austenitized, subarea gradient cooling is conducted, the workpiece is put into a cooling tank, quenching oil wraps the workpiece through an oil layer and continues to penetrate into a liquid layer, the surface layer of the workpiece reaches the martensite transformation termination temperature, and austenite is transformed into a martensite structure; the influence of a steam film generated when quenching liquid is used for quenching on the machining stability and the machining quality of a workpiece can be reduced.

The invention discloses an amorphous nanocrystalline magnetic material production method, which relates to the technical field of amorphous nanocrystalline, and comprises the following operation steps: S1, material preparation; s2, alloy smelting, wherein the prepared raw materials are added into a vacuum induction smelting furnace according to a specific proportion; s3, single-roller rapid quenching strip manufacturing is conducted, specifically, smelted alloy liquid flows out through a nozzle at the bottom of the vacuum induction smelting furnace and is sprayed to the surface of a copper roller rotating at a high speed, and the alloy liquid is solidified into a thin strip; s4, nano-crystallization treatment: putting the prepared amorphous ribbon into a vacuum annealing furnace for annealing treatment; s5, magnetic field heat treatment, wherein after annealing treatment, the thin strip is placed in a high-intensity magnetic field environment to be subjected to heat treatment again; and S6, forming processing: winding the thin strip into an inductance coil by using a winding device. According to the production method of the amorphous and nanocrystalline magnetic material, the operation steps are simpler, the production efficiency of amorphous and nanocrystalline is higher, and the quality of the material is better.

The invention relates to a high-strength FeCo-V-Nb magnetically soft alloy and a heat treatment method. The invention belongs to the field of magnetically soft alloy materials. The high-strength magnetically soft alloy comprises the following components in percentage by weight: 40-60% of Fe; 40%-60% of Co; 1 to 3 percent of V; and 0.01 to 1% of Nb. And smelting, casting, hot rolling and cold rolling are carried out to finally obtain the thin strip with the thickness of 0.25-0.45 mm. The invention provides a heat treatment method of a high-strength FeCo-V-Nb magnetically soft alloy. The heat treatment method comprises the following steps: carrying out heat treatment at 700-900 DEG C under an anti-oxidation condition, and cooling through water quenching. The invention aims to solve the problem that the existing iron-cobalt magnetically soft alloy cannot obtain relatively high magnetic property and mechanical property at the same time, so that the mechanical property and the magnetic property of the iron-cobalt magnetically soft alloy under the conditions of room temperature and high temperature are remarkably improved.

The invention discloses a solid sodium silicate preparation process based on segmented temperature control roasting, and relates to the technical field of inorganic chemical material preparation. The process comprises the steps of raw material proportioning, mixing homogenization, segmented temperature control roasting and post-treatment. By matching physicochemical reaction requirements in stages, the reaction is more stable and more thorough, the conversion rate is remarkably improved, and unreacted nuclei are basically eliminated. A quenching and slow cooling procedure is adopted, so that the product is ensured to have a high-whiteness and high-transparency glass body state, the internal stress is small, the mechanical strength is high, and the appearance quality and the physical property are remarkably improved; and by adjusting the temperature and time parameters of each stage, the requirements of different raw material specifications and production of products with different moduli can be flexibly met. By accurately controlling the temperature, time and atmosphere of each stage, the problems of non-uniform reaction and poor product quality in the traditional process are solved, and the preparation of solid sodium silicate with high conversion rate, high whiteness and low internal stress is realized.

The invention discloses a method for reducing heat treatment deformation of a bearing ring through a temperature field shielding tool. The method aims at solving the problem that the bearing ring deforms in the heat treatment process. The method for reducing the heat treatment deformation of the bearing ring comprises the following steps: 1, carrying out a heat treatment test on a bearing ring sample, taking a deformed long axis position of the bearing ring sample after heat treatment as a mark position of other bearing rings, flatly placing the bearing ring on a material frame, and symmetrically placing two shielding tools at the mark position of the bearing ring; thirdly, when the steel bearing ring is a thick-wall ring or a thin-wall ring, different shielding tools are used; and 4, the material frame containing the steel bearing ring and the shielding tool is put into a vacuum furnace to be subjected to vacuum quenching treatment. The shielding tools of different shapes and sizes are designed, the placing mode of the tools is optimized, and the test result shows that by adding the shielding tools, the ovality of the inner diameter of the ferrule is reduced by 113 microns, and the ovality of the outer diameter of the ferrule is reduced by 118 microns.

The invention discloses environmental particulate spherical powder and a preparation method thereof. The preparation method comprises the following steps: selecting artificially synthesized CMAS powder or natural solid particles as a preparation raw material; the preparation method comprises the following steps: sequentially carrying out ball milling, high-temperature melting, quenching and solid-phase sintering on a CMAS powder raw material to obtain a crystalline CMAS block; the method comprises the following steps: carrying out ball milling on natural solid particles or crystalline CMAS blocks to obtain fine particle powder, and obtaining a high-temperature melting characteristic curve of the fine particle powder; preparing the fine particle powder into slurry, and carrying out spray granulation to obtain powder particles with a target size; the powder particles are subjected to low-temperature sintering to remove the binder, then high-temperature sintering densification treatment is conducted, the environmental particulate matter spherical powder is obtained, and the densification treatment temperature is determined based on a high-temperature melting characteristic curve. The prepared powder has excellent flowability and compactness, the particle size range of the powder is controlled to be 20-500 microns, the spherical powder with concentrated particle size distribution can be obtained after screening, and a high-quality and standardized material can be provided for research of aero-engine related thermal protection technologies.

The present invention relates to the field of free bending forming technology, and specifically discloses three-dimensional free forming equipment and methods based on induction heating and quenching. In the six-axis free bending forming technical equipment, the introduction of induction heating modules and quenching heat treatment modules has brought a major innovation to the production process. Through the integrated induction heating device, the profile or pipe components are quickly heated, which effectively reduces the deformation resistance of the material and significantly enhances the forming plasticity of the material. Combined with the six-axis free bending equipment's ability to finely control multiple degrees of freedom, the outlet of the bending die is equipped with an annular quenching device, which enables us to perform cooling treatment immediately after the component is formed. This process ensures that the finished component has a higher level of strength and hardness. This advanced free bending system that integrates induction heating and quenching processes seamlessly combines the forming of the material with the subsequent strengthening treatment, thereby greatly improving the performance of the material and the quality of the finished product.