704 results about "Quenching" patented technology

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 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.

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 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 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 high-performance PbTe-PbS thermoelectric material and a charge balance doping preparation method thereof, and relates to the technical field of thermoelectric materials, Pb particles, Sb particles, Te blocks, S sheets and Ag strips are respectively weighed according to the molar ratio of 0.95: 0.033: 0.9: 0.1: 0.008 and then are loaded into a quartz tube for vacuum tube sealing, and the high-performance PbTe-PbS thermoelectric material is obtained through box-type furnace sintering, cold water quenching, box-type furnace annealing, cold water quenching and rapid hot pressing furnace sintering in sequence. The Sb, S and Ag co-doped PbTe thermoelectric material is obtained. According to the method, a Pb vacancy and an Ag gap are introduced through charge balance doping of Sb2Te3 to dynamically regulate and control chemical potential, the problems of PbS precipitation and carrier transport blocking of an n-type high-concentration doped PbTe-PbS material system are solved, the wide-temperature-range thermoelectric figure of merit of the small-bandwidth PbTe-PbS thermoelectric material is greatly improved, the process is stable and can be scaled, and technical support is provided for commercialization of PbTe-based thermoelectric devices.

The invention relates to the technical field of non-ferrous metal processing, and particularly provides a hot-cold die composite heat treatment method for an aluminum alloy sheet. The aluminum alloy sheet hot and cold die composite heat treatment method comprises the following steps that S1, a workpiece is placed in a quenching device, an up-down split type heating die is adopted for closing and clamping the workpiece, heat preservation is conducted for 5-20 min at the temperature of 400-550 DEG C, and solution treatment is conducted; s2, transferring the workpiece subjected to the solution treatment to a cooling station, and closing and clamping the workpiece subjected to the solution treatment by adopting an up-and-down split type cooling mold for quenching treatment to obtain a finished product; wherein the temperature of the upper cooling mold and the temperature of the lower cooling mold are controlled to be 15-25 DEG C. According to the invention, a continuous treatment mode of combining an up-down split hot die and a cold die is adopted, so that the plate is effectively supported by the die in the whole solid solution and quenching process, thereby successfully overcoming the defects of the traditional air cushion furnace process in the aspects of plate shape control and performance uniformity; and therefore, the high-quality aluminum alloy thin plate which is flat in plate shape and uniform in structure can be stably prepared.

The invention provides a hollow pipe fitting forming device and method. The hollow pipe fitting forming device comprises a heating mechanism, a bulging quenching mold and an air source mechanism. The heating mechanism comprises a roller hearth furnace provided with a conveying roller way, a furnace body is sequentially provided with a feeding isolation chamber, a heating chamber and a discharging isolation chamber in the length direction, all the chambers are isolated from one another and communicated with a protective atmosphere system, and the chambers are used for introducing dry air or inert gas into the furnace body and maintaining the dew point temperature below-15 DEG C; hydrogen adsorption on the surface of the hollow pipe blank is effectively inhibited, and the hydrogen embrittlement risk is reduced. After a pipe blank is heated at a high temperature, austenitizing of a material structure is achieved, then the pipe blank is rapidly transferred to a bulging quenching die, gas expansion deformation occurs in a die cavity under the action of set air pressure, the hollow pipe fitting is formed by attaching the die wall, meanwhile, the hollow pipe fitting attached to the die cavity is synchronously cooled through a cooling assembly in the die, and quenching treatment is achieved. The material structure is converted into martensite, and the mechanical property of a formed part is improved.

The application discloses a metal surface heat treatment device with a self-diagnosis function and a treatment method, relates to the technical field of metal heat treatment devices, and comprises a main base, the upper surface of the main base is provided with a cooling soaking pool, and the upper surface of the main base is further provided with an auxiliary mechanism; the auxiliary mechanism comprises a material conveying component and a gas collecting assembly; the material conveying component comprises a conveying frame body arranged on the upper surface of the cooling soaking pool and provided with a feeding conveyor belt on the upper surface; the gas collecting assembly is composed of a detection component and a processing component; the gas collecting assembly comprises a side base connected with one side surface of the main base, and the upper surface of the side base is provided with a treatment box body; and the processing component comprises a regenerative catalytic oxidizer and a receiving pool. In the scheme, the gas collecting assembly can intelligently collect organic mist generated during metal quenching, and the organic mist is treated through condensation or catalytic decomposition; in addition, the treatment product can be reused to improve the performance of the cooling liquid.

The invention provides a rare earth-based composite wave-absorbing material and a preparation method thereof, the rare earth-based composite wave-absorbing material comprises a rare earth material, a magnetic material and steel balls, and the mass ratio of the rare earth material to the magnetic material to the steel balls is 1: (0.1-3): (4-10); the rare-earth-based composite wave-absorbing material provided by the invention is relatively simple in preparation process, controllable in yield and high in repetition rate, and by exploring the influence of rare earth types, strong magnetic material introduction amount, ball-milling rotating speed, ball-milling time and ball-material ratio on the electromagnetic performance of the material, the rare-earth-based composite wave-absorbing material is found to have a good application prospect. Proper rare earth types and a proper ball milling process can improve the limitation of isotropy on the magnetic loss capacity of the rare earth material prepared by a rapid quenching process, and the magnetic loss capacity of the rare earth material at high frequency is improved; the introduction of the strong magnetic material further improves the overall magnetic loss capability, and the synergistic effect of the strong magnetic material and the rare earth material reduces the dielectric constant, optimizes impedance matching, and improves the wave-absorbing performance of the material.

The invention relates to the field of heat treatment processes, and discloses a deformation control method of a thin-wall special-shaped structure sheet metal part for a liquid rocket engine, the sheet metal part is made of a 30CrMnSiA trough plate, and the deformation control method comprises the following steps: vertically hanging the trough plate through steel wire binding during quenching; fixing the lower end of the trough plate in the vertical direction to prevent swinging in the quenching process; during quenching, the temperature of a quenching furnace is increased to the set preheating temperature below the quenching temperature, then the fixed trough plate part is put into the quenching furnace, the temperature is slowly increased to the quenching temperature along with the furnace, and the stress applied to a trough plate machine is pre-eliminated in the slow temperature increasing process; the temperature of quenching oil is increased to 40 DEG C or above, quenching deformation of the trough plate caused by a steam film generated by the oil is prevented, and a heat treatment production line is used for automatic feeding, turnover, quenching, cleaning and tempering heat treatment to complete the trough plate heat treatment procedure. According to the method, the hardness performance of the groove plate cannot be affected, warping and torsional deformation of the groove plate can be effectively controlled, the first-pass yield is improved, the reworking process and the rejection rate are reduced, and the production cost of the groove plate is saved.

The application relates to a high-entropy alloy with excellent creep performance and a preparation method thereof. a Co b Cr c Ni d Ta p Al q M n wherein 10<=a<=20, 20<=b<=25, 10<=c<=20, 25<=d<=35, 5<=p<=10, 0<=q<=8 and 0<=n<=5. The preparation method comprises the following steps: allocating raw materials according to designed components, then carrying out smelting under a protective atmosphere, and then carrying out solid solution water quenching treatment + hot rolling treatment and again solid solution treatment, and then quenching after heat preservation at 750 DEG C to 950 DEG C. The product is obtained by reasonably regulating and controlling components, heat deformation and heat treatment processes. The product has a service life of 1245h under high-temperature creep conditions of 750 DEG C / 350MPa, is far higher than similar products, has a tensile strength of greater than 1.5GPa at room temperature, breaks through the bottleneck that Laves eutectic high-entropy alloys have no tensile plasticity at room temperature, and has a wide engineering application prospect.

This invention relates to the field of metal smelting technology and discloses a method for switching between dry quenching and water quenching in a blast furnace. The steps are as follows: S1. Calculate the weight of each batch of water-quenched coke: Calculate the weight Mn of water-quenched coke based on the moisture change value of dry quenching and water-quenching, the batch weight of ore, and the batch weight of dry quenching; S2. Verify the batch weight of ore and the batch weight of water-quenched coke: Based on the furnace top gas temperature loss coefficient α during each batch of water quenching, the weight of each batch of water-quenched coke needs to be reduced by Mn*α, resulting in the weight of each batch of water-quenched coke being Mn-Mn*α. Based on the coke load R, the corresponding batch weight of ore is (Mn-Mn*α)*R; S3. Adjust the feeding angle and number of feeding rings of ore, coke, and water-quenched coke; S4. If the furnace top gas temperature drops significantly, reduce the batch weight of ore and water-quenched coke to maintain a stable furnace top gas temperature. This invention addresses the changing moisture content of water-quenched coke by operating the water-quenched coke in a gradient manner, thereby stabilizing the gas flow distribution during the water-quenched coke process and ensuring smooth operation of the blast furnace.

A continuous casting billet surface quenching method in the embodiment of the present application, by cutting the continuous casting billet leaving the continuous casting machine, the to-be-quenched billet is obtained, the to-be-quenched billet is conveyed into the first quenching area for first-stage quenching, and the surface temperature after the first-stage quenching is controlled within the first preset temperature threshold range, the once-quenched billet is obtained, the once-quenched billet is conveyed into the temperature-recovery area for temperature recovery, the once-quenched billet after the temperature recovery is obtained, the once-quenched billet after the temperature recovery is quenched in the second quenching area, the surface temperature after the second-stage quenching is controlled within the second preset temperature threshold range, the twice-quenched billet is obtained, and the twice-quenched billet is conveyed to the heating furnace; the method can effectively reduce the surface temperature of the continuous casting billet under high speed to a suitable temperature range by setting two quenching areas for quenching control of the continuous casting billet under high speed, and the temperature recovery section between the quenching areas can reduce the quenching stress.

The invention discloses a forging forming process for an aluminum casting chassis supporting arm implanted with a steel plate framework, and relates to the technical field of metal composite material forming. The method comprises the following steps: 1, pretreating a steel plate framework; 2, assembling the mold; 3, performing semi-solid extrusion; 4, sequentially carrying out segmented heat treatment of solid solution at 535 DEG C for 2 hours, water quenching and aging at 175 DEG C for 8 hours; and 5, the cooling rate is controlled to be 5 DEG C / min under a 0.15 T rotating magnetic field, and solidification is completed. Through a quadruple synergistic mechanism of micro anchoring structure-gradient coating-semi-solid extrusion-segmented heat treatment, the shear strength of a composite interface reaches 60-105 MPa, the tensile strength of a final component reaches 311-322 MPa, the fatigue life is prolonged to 120 million times from 500 million times, the lightweight target that the weight is reduced by 50% compared with that of a pure steel part is achieved, and the production cost is reduced. The defects of insufficient strength, infirm aluminum / steel interface bonding, pore shrinkage and brittle phase of a traditional aluminum casting piece are overcome.

The invention relates to the technical field of metal material processing, and discloses a manufacturing method for continuous cast rolling of an aluminum strip for a 3104 aluminum louver, which comprises the following steps: S1, melting and refining 3104 aluminum alloy, and then stably conveying molten aluminum with the temperature maintained at 680-720 DEG C; s2, the molten aluminum is introduced into a high-frequency electromagnetic induction suspension molding area, the molten aluminum is suspended under the action of a main suspension coil, and a semi-solid strip blank with the solid outer layer and the liquid inner layer is formed; s3, the semi-solid strip blank sequentially passes through a non-contact high-energy ultrasonic energy field and an atomization cooling area; and S4, the treated semi-solid strip blank is guided into a flexible synchronous rolling roller to be rolled, and the strip with the set thickness is obtained. The semi-solid strip blank is formed by the molten aluminum in a non-contact state in an electromagnetic induction suspension mode, direct contact between the molten aluminum and a low-temperature mold is avoided, and therefore formation of strip surface defects caused by the chilling effect is restrained.

The invention belongs to the technical field of microcrystalline glass materials, and particularly discloses rare earth doped silicate system high-crystallinity transparent microcrystalline glass and a preparation method thereof. The microcrystalline glass is prepared from the following raw materials: black talcum powder, CaO, AlF3, YF3, rare earth ions, graphite powder, Si3N4, a clarifying agent, micron-sized seed crystals and the like through a high-temperature melting process and controllable nucleation-crystallization. The preparation method is simple, the used raw materials are rich, the preparation process is simple, and the prepared high-crystallinity transparent microcrystalline glass can be effectively excited by 420 nm purple light and has the characteristics of high crystallinity, high transmittance, high luminous efficiency, excellent thermal quenching resistance and the like. A main crystal phase is CaAl2Si2O8 and a small amount of YF3, the crystallinity is larger than or equal to 70 vol.%, the transmittance of a 1 mm sample is larger than or equal to 80%, the emission peak value is adjustable between 480 nm and 520 nm, the internal quantum efficiency is larger than or equal to 80%, the luminous intensity at the temperature of 150 DEG C is 85% or above of the luminous intensity at the room temperature, and the material can be widely applied to the fields of white light illumination, screen display and the like.

The application discloses a kind of bismuth ferrite-barium titanate textured piezoelectric ceramics and preparation method thereof, belong to ceramic preparation technical field, the preparation method includes: with (001) crystal direction BaTiO3 flaky microcrystal as template, with (1-x) BiFeO3-xBaTiO3 ceramic matrix powder is mixed, through casting process, matrix powder is grown along the template crystal direction, during, by controlling the amount of BaTiO3 flaky microcrystal, so that the volume ratio of it and ceramic matrix powder does not exceed 0.06, the thickness of casting film is 30~50 μm, and high-temperature sintering and high-temperature quenching mode with temperature up to 970 ℃~1040 ℃ is used, finally form textured BF-BT ceramic, the formed ceramic has good piezoelectric property and texture degree, and the above method process is simple, without adding additional material.

Disclosed in the present invention is a preparation method for an anisotropic Nd2Fe14B / α-Fe bulk nanocrystalline composite permanent magnet material. The preparation method comprises the following steps: preparing a master alloy; crushing the master alloy into bulks, and, by means of a melt rapid quenching method, preparing amorphous ribbons; grinding the amorphous ribbons to obtain amorphous powder; cold-pressing the powder into bulks; and placing the bulks into a stainless steel mold, and heating and then rolling same, the stainless steel mold being of a plate-shaped structure, and a chamber for accommodating the bulks being formed in the stainless steel mold along the thickness direction thereof. The present invention presses the NdFeB amorphous powder into bulks, embeds same in the stainless steel mold, and performs rolling at a temperature below a crystallization temperature, so as to achieve high-temperature amorphous material crystallization.

A method for producing a steel sheet, the method containing the following successive steps:providing a cold-rolled steel sheet, the chemical composition of the steel containing in weight %: 0.15%≤C≤0.23%, 2.0%≤Mn≤2.8%, 1.0%≤Si≤2.1%, 0.02%≤Al≤1.0%, with 1.7%≤Si+Al≤2.1%, 0≤Nb≤0.035%, 0≤Mo≤0.3%, 0≤Cr≤0.4%, the remainder being Fe and unavoidable impurities,annealing the steel sheet at an annealing temperature TA so as to obtain a structure comprising at least 65% of austenite and up to 35% of intercritical ferrite,quenching the sheet at a cooling rate of at least 20° C. / s from a temperature of at least 600° C. down to a quenching temperature QT comprised between Ms−170° C. and Ms−80° C.,heating the sheet up to a partitioning temperature PT between 350° C. and 450° C. and maintaining the sheet at this temperature for a partitioning time Pt comprised between 80 s and 440 s,immediately cooling the sheet down to the room temperature,the steel sheet having a final microstructure consisting of, in surface fraction:between 40% and 70% of tempered martensite,between 7% and 15% of retained austenite,between 15% and 35% of ferrite,at most 5% of fresh martensite,at most 15% of bainite.

The invention discloses a heat treatment device and process for circular plate type products, and relates to the field of metal material heat treatment technology.The heat treatment device comprises a quenching assembly, a heating box and a sliding rail assembly, a movable basket is arranged at the upper end of the sliding rail assembly, the sliding rail assembly drives the movable basket to slide in the length direction of the sliding rail assembly, and a plurality of partition columns are fixedly arranged at the upper end of the movable basket; the multiple separation columns are arranged in the length direction of the movable basket, a storage space is formed between every two adjacent separation columns, multiple guide columns are fixedly arranged at the upper end of the movable basket in the vertical direction, the same supporting plate is fixedly arranged at the upper ends of the multiple guide columns, a movable plate is arranged at the lower end of the supporting plate, and the multiple guide columns penetrate through the movable plate. A hydraulic cylinder is fixedly arranged at the upper end of the supporting plate in the vertical direction and drives the moving plate to move in the vertical direction, a rotating assembly for driving the steel to rotate is arranged in the moving basket, and a plurality of moving openings are formed in the upper end of the moving plate and right face the storage space. The device has the effect of improving the quality of finished steel products.

Provided is a stainless steel sheet that does not require a quenching treatment and that is suitable as a base material steel sheet for a disc brake in a variety of two-wheeled vehicles. The component composition is properly controlled, the structure balance index F is controlled to be in the range of 100-250, and the area fraction of ferrite grains having a grain average misorientation of not more than 1° and a grain diameter of not more than 50 μm is 0.01-50.00%.

The application belongs to the field of materials, and discloses a preparation method of high-performance GeTe thermoelectric material, Ge powder, Zr powder, Pb powder, Te powder and Cu2Te powder are respectively taken according to the molar ratio of 0.965-x:0.02:x:0.985:0.015, wherein the value of x is respectively 0, 0.06 and 0.08, then the powders are loaded into a quartz tube for vacuum sealing, and are sequentially subjected to sintering in a box furnace, cold water quenching, annealing in a box furnace, cold water quenching and sintering in a rapid hot-pressing furnace, so as to obtain Zr, Cu2Te and Pb co-doped high-performance GeTe thermoelectric material. The method has simple preparation process, high operability and high repeatability, and the prepared GeTe doped with Zr, Cu2Te and Pb compound has the characteristics of high crystallinity and high density. The method can greatly improve the thermoelectric figure of merit of GeTe thermoelectric material, and the thermoelectric figure of merit is at a high level in the thermoelectric report, so the method has good application prospect.

The invention discloses a quenching device and method for steel ball production, and relates to the technical field of steel ball quenching, in particular to a quenching device and method for steel ball production. The quenching device comprises a base bin, a first quenching barrel and a second quenching barrel are arranged on the upper surface of the base bin, and a plurality of spiral sliding groove plates connected end to end are sequentially arranged in the first quenching barrel from top to bottom; a plurality of spiral chute plates connected end to end and spiral plates arranged on the inner walls of the spiral chute plates are matched with the synergistic effect of first air passages on the inner bottom surfaces of the spiral chute plates and second air passages on the upper surfaces of the spiral plates, so that a stable gradient field of which the temperature is gradually reduced from top to bottom can be constructed and maintained in a first quenching barrel; the steel balls are gradually cooled from gentle to violent in the rolling process along the spiral path, sudden change of the cooling rate is effectively avoided, concentration and superposition of thermal stress and structural stress are fundamentally restrained, and therefore the quenching hardness uniformity, the size stability and the product percent of pass of the steel balls are remarkably improved.

The utility model relates to the field of foundry equipment, concretely relates to a castings quenching device, including rotating basket subassembly, quenching liquid cooling subassembly, lifting assembly, support and temperature sensor. Rotating basket subassembly be equipped with the porous basket of a plurality of wing plates and the porous basket can be suspended and rotate, and the quenching liquid cooling subassembly is equipped with the barrel body with serpentine heat exchange pipe and the serpentine heat exchange pipe is communicated with cooling water source, and the barrel body is equipped with the liquid discharge pipe and is communicated with the liquid storage tank, and the top is equipped with the annular pipe of the liquid outlet short pipe with the liquid supply of liquid storage tank, and the barrel body is placed above lifting assembly and is driven by lifting assembly and can reciprocatingly ascend and descend, and the temperature sensor is connected on the cooling barrel subassembly, and the liquid temperature of quenching liquid in the barrel body can be dynamically detected. The castings quenching device can make the liquid temperature of quenching liquid homogenization and rapid cooling and can effectively control the liquid temperature, and can improve the quenching quality of castings.

The invention relates to the technical field of heat treatment equipment, and discloses a heat treatment device for rail transit fastener machining and a heat treatment technology.The heat treatment device comprises a heating furnace and a quenching box, the quenching box is located on one side of the heating furnace, and a movable material distribution mechanism is arranged on the upper side of the quenching box; the material distributing mechanism comprises a material carrying seat, an opening is formed in one end of the material carrying seat, a push plate is arranged in the material carrying seat, a guide rod is arranged on the push plate, the guide rod is connected with the material carrying seat in a sliding mode, and the push plate is elastically connected with the material carrying seat through a first spring. According to the quenching device, the quenching box with the material distribution mechanism is arranged, the material distribution mechanism comprises the material scattering plate, correspondingly, the driving mechanism used for adjusting the material scattering plate is further arranged in the quenching box, the driving mechanism can drive the material scattering plate to rotate, in the process, falling materials can be scattered through the material scattering plate, and the material scattering effect is improved; and the dispersing effect of the workpieces during discharging is effectively improved.

The application discloses a rust-proof enhancer for PAG quenching liquid, and raw materials of the rust-proof enhancer include the following components in parts by weight: 40-45 parts of organic-inorganic rust-proof additive, 35-40 parts of pH regulator, 5-10 parts of non-ferrous metal rust-proof agent and 5-10 parts of antibacterial agent; the organic-inorganic rust-proof additive is a mixture of dicarboxylic acid, tricarboxylic acid, phytic acid, isomeric decanoic acid, fatty acid amide or fatty acid amine salt and sodium tungstate; the components synergistically generate a stable rust-proof film on the surface of metal, the rust-proof film has strong adhesion and can be firmly attached to the surface of metal, is less affected by the polarity of PAG, can effectively enhance the rust-proof performance of steel workpieces after quenching, and has no adverse effect on the properties such as the cloud point, viscosity, foam and cooling characteristics of the quenching liquid.