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170results about How to "Uniform cooling rate" patented technology
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Forging and rolling technology and hot rolling and forging apparatus for making large pulley
ActiveCN101020287AHigh mechanical strengthImprove wear resistancePortable liftingFurnace typesHigh wear resistanceUltimate tensile strength
The present invention discloses forging and rolling technology for large pulley. The forging and rolling process includes hot forging and upsetting steel blank to the required thickness and diameter, die forging to form the hub and spokes, and hot rolling to form the inner circular surface, end surfaces, outer circular surface and slot in circumference of the rim. The present invention also provides the corresponding hot rolling apparatus. The present invention can obtain pulley with high strength, high wear resistance, small internal stress, less deformation and other advantages.
Owner:MAANSHAN IRON & STEEL CO LTD
Hot stamping die of snakelike cooling water channel type
InactiveCN104923660AImprove processing efficiencyShorten the manufacturing cycleShaping toolsHot stampingWater channel
The invention discloses a hot stamping die of a snakelike cooling water channel type, and the hot stamping die comprises a convex die insert and a concave die insert, which are arranged in a paired manner. The convex die insert is provided with a convex part so as to enable the cross section of the convex die insert to be convex. The concave die insert is provided with a concave part so as to enable the cross section of the concave die insert to be concave. The interiors of the convex and concave die inserts are respectively provided with a snakelike cooling water channel, and the depths of the snakelike cooling water channels are set in a manner that the bottoms of the snakelike cooling water channels are close to surface where the convex die insert with the concave die insert. The hot stamping die is simple in machining mode, has no cooling dead zone, and is uniform in cooling degree and speed. Moreover, the sizes of the inserts are not limited, thereby simplifying the structure of the die, improving the machining efficiency, achieving a good cooling effect, facilitating the assembly and maintenance, and reducing the cost.
Owner:BAOSHAN IRON & STEEL CO LTD
Production process of ultrathin-wall aluminum alloy section for aviation
The invention discloses a production process of an ultrathin-wall aluminum alloy section for aviation. The production process comprises the following steps: 1) before extrusion, heating an aluminum alloy casting rod, an extrusion mold and an extrusion container; 2) extruding the section; 3) straightening; 4) carrying out sizing sawing on the straightened section; 5) heat treatment. According to the production process, the aluminum rod, the extrusion mold and the extrusion container are preheated before extrusion, so that the temperature of the section in the extrusion process can be kept stable, the mass defects of the section caused by an over-cold or over-heat condition are avoided, meanwhile, the end part of the section is completely wrapped and fixed by a clamp hole in the stretching and straightening processes, the contact area of the section and a clamp is large, the problem of rupture in the end part of the section in the stretching and straightening processes can be avoided, vertical quenching is carried out on the section by adopting quenching liquid of which the concentration is 8-10% and the temperature is 25-30 DEG C in the production process, the cooling speeds of various parts of the section are uniform, the quenching deformation can be greatly reduced, and the product quality is improved.
Owner:CHINA ZHONGWANG
Casting method of large-scale high pressure resisting multi-cylinder-block cast
ActiveCN102699282AControl temperature distributionUniform temperature distributionFoundry mouldsFoundry coresSlagHigh pressure
The invention relates to a casting method of large-scale high pressure resisting multi-cylinder-block cast. The method includes the following steps: (1) mold making, (2) sand mold making, and (3) casting molding: during the sand mold making of the step (2), a sprue is designed into a first sprue (1) and a second sprue (3), a cross gate is designed into a first cross gate (2) and a second cross gate (4), and an ingate (5) is designed into a plurality of parallel pouring gates. Cross section area of all pouring gates is set as the following relation: the cross section area of the first sprue (1) is larger than that of the first cross gate (2), the cross section area of the first cross gate (2) is smaller than that of the second sprue (3), the cross section area of the second sprue (3) is larger than that of the second cross gate (4), and the cross section area of the second cross gate (4) is smaller than that of the ingate (5). The casting method overcomes the defects that shrinkage cavities, shrinkage porosities, slag inclusion and the like do not exist in the cast and can meet quality requirements that cylinder holes can be used as cylinder inner walls after the cylinder holes are machined.
Owner:RIYUE HEAVY IND
Cooling system and method for low-temperature liquid hydrocarbon storage tank
InactiveCN102261559AUniform dispersionUniform cooling rateContainer filling methodsContainer discharging methodsLiquid hydrocarbonsSpray nozzle
The invention relates to a cooling system and method for a low-temperature liquid hydrocarbon storage tank. The cooling system comprises a liquid hydrocarbon transportation ship, a ship unloading arm, a liquid hydrocarbon output general pipe, a cooling straight pipe and a cooling annular pipe, wherein the liquid hydrocarbon transportation ship carries liquid hydrocarbon; the ship unloading arm is connected with a liquid hydrocarbon output pipe of the liquid hydrocarbon transportation ship; the liquid hydrocarbon output general pipe is connected with an output end of the ship unloading arm to output the liquid hydrocarbon; the cooling straight pipe is connected with the liquid hydrocarbon output general pipe and enters the inside of an inner tank via an arc crown of an outer tank, an insulation material and a suspended ceiling of the inner tank sequentially; the cooling annular pipe is positioned in a horizontal plane in the inner tank, and comprises an edge annular pipe and a liquid hydrocarbon dispersion pipe, wherein the liquid hydrocarbon dispersion pipe penetrates the central point of the edge annular pipe and is used for dispersing liquid hydrocarbon; the edge annular pipe is communicated with the liquid hydrocarbon dispersion pipe, and the liquid hydrocarbon dispersion pipe is communicated with the cooling straight pipe at the central point of the edge annular pipe; and openings are uniformly distributed at the lower part of the edge annular pipe at intervals, and each opening is connected with a hollow nozzle used for spraying and atomizing outflowing liquid hydrocarbon. The cooling system and method provided by the invention enables the cooling speed of the storage tank to be uniform.
Owner:CHINA HUANQIU CONTRACTING & ENG CO LTD
Wear-resisting alloy hammer head and preparation method thereof
InactiveCN106591715ASpeed up coolingUniform cooling rateFoundry mouldsFurnace typesEngineeringStructural engineering
The invention relates to a wear-resisting alloy hammer head and a preparation method thereof. The hammer head is characterized in that a strip-shaped gap is formed in the middle of an end part of the hammer head; the strip-shaped gap is as long as a hammer end and is 12-20 mm wide; and the depth of the strip-shaped gap is equal to the distance from the top of the hammer end to the bottom of the hammer end and is 25-30 mm. Since the end part of the hammer head is hollowed out in a thickness direction to form a 12-20 mm space, when the hammer head crushes materials, fine materials can easily pass through the space; and if large materials are embedded in the space, the effect that materials strike materials can be realized, and accordingly the crushing efficiency is improved. A wear-resisting high-Cr white cast iron piece can be embedded in the 12-20 mm space to form a composite hammer head, so that the service life of the wear-resisting alloy hammer head can be further prolonged.
Owner:YINGKOU LONGCHEN MINE VEHICLE MFG CO LTD
Air passage opening and closing device
InactiveUS20090023374A1Uniform cooling rateAvoid deformationAir-treating devicesVehicle heating/cooling devicesEngineeringMechanical engineering
Owner:DENSO CORP
High energy gasification/atomization of Fe#-[3]B/R#-[2]Fe#-[14]B nanometer composite permanent magnet powder and its preparation method
InactiveCN1593820AHigh B contentStrong Amorphous Formation AbilityMagnetic materialsHigh energyAlloy
The invention makes public a kind of composite nanometer Fe3B / R2Fe14B permanent magnetism powder by high-energy gas atomizing and the method of making it. Transform the alloy fluid, whose atomic composition formulary is Rx(Fel-wCow)100-x-y-xByTz, into ball powder by high-energy gas atomizing. Then dispose it and get composite nanometer Fe3B / R2Fe14B powder based on Fe3B by hot crystallization. The R is at least one component as following: Nd, Pr, Dy, and Tb. The T is at least one of the following components: Zr, Nb, Cr, Ga, Ti, V and Si. And the proportion should be:3.0<=x<=6.0,8<=y<=22,0<=z<=5,0<=w<=0.5. The powder made by this method has advantages such as glaze, ball shape, good fluidity and low cost, and is especially fit for adhesive binding magnet by injection molding.
Owner:ZHEJIANG UNIV
Method for preparing nanoscale spherical Si-phase Al-Si alloy through selective laser melting
InactiveCN104368815AImprove liquidityGuarantee the quality of powder coatingIncreasing energy efficiencySelective laser meltingSelective laser sintering
The invention relates to a method for preparing nanoscale spherical Si-phase Al-Si alloy through selective laser melting. The method comprises the steps that a CAD three-dimensional model for forming parts is designed, and is converted into a data format STL file capable of being slit, a supporting body of a certain height is built at the bottom of the three-dimensional model, the three-dimensional model and the supporting body are slit into a plurality of layers, technological parameter setting is carried out, and data and parameters are guided into SLM equipment; a sealing device is filled with inert gas for atmosphere protection after being vacuumized, a base plate is fixed to a work table capable of ascending and descending, a layer of Al-Si alloy powder is evenly laid on the base plate through a powder feeding system, corresponding cutting layers are selectively scanned according to guided-in parameter lasers, the base plate is lowered by the thickness of one layer, and a layer of new Al-Si alloy powder is evenly laid on the base plate until scanning of all the layers is finished. In the method, no mold is needed, the utilization rate of materials is high, the mechanical property of the Al-Si alloy can be improved, and the production cost of parts in a complex shape can be lowered.
Owner:NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
Heat-treatment cooling process for train wheel
ActiveCN110055394AImprove mechanical propertiesEasy to useFurnace typesHeat treatment furnacesThree stageHardness
The invention discloses a heat-treatment cooling process for a train wheel, and belongs to the technical field of heat-treatment cooling for train wheels. The heat-treatment cooling process for the train wheel comprises the steps that first, the whole wheel is heated to be completely austenitized; second, the wheel is transferred onto a quenching table and is made to rotate, a gas-mist two-phase flow with the pressure being increased step by step is sprayed onto a wheel tread; and third, the whole wheel is placed into a tempering furnace for heat preservation and is finally taken out to be air-cooled, wherein the gas-mist two-phase flow with the pressure being increased step by step is sprayed onto the wheel tread sequentially through three stages, the rotation speeds V1, V2 and V3 of thewheel, the water pressures P1, P2 and P3 and the quenching times T1, T2 and T3 in the three stages are controlled, and the numbers of started nozzles which are distributed at equal intervals in the circumferential direction of the wheels in the three stages are respectively M, 2M and 3M. By adoption of the heat-treatment cooling process for the train wheel, the capacity to cool the interior of a rim can be improved, the cooling speed is kept balanced and consistent from the wheel tread to the deep interior of the rim, the structure of the whole cross section of the rim is optimized, and accordingly, the radial hardness gradient of the rim is greatly reduced, and the mechanical property and usability of the wheel are greatly improved.
Owner:MAANSHAN IRON & STEEL CO LTD
Steel ingot water-cooling crystallization process using riser
The invention relates to a steel ingot water-cooling crystallization process. The process comprises the following steps that condensate water is poured into a cooling water cavity in advance; liquid steel is poured into a mould body of a water-cooling mould after temperature is controlled, the pouring speed of a riser is lower than that of a steel ingot, the condensate water is poured continuously with the temperature maintained for 30 min-160 min, and the steel ingot is released after being condensed; then, a thermal insulation sleeve without a thermal insulation cover is covered, ventilation is performed for 3 h-15 h, and the thermal insulation sleeve is covered with the thermal insulation cover with the temperature maintained for 15 h-40 h; the steel ingot is transferred into a pit with the temperature maintained for 10 h-40 h after all the steel ingots are condensed. The process has the advantages that the thermal insulation sleeve is adopted, the large steel ingot free of pores, dense in internal tissue structure and good in quality is obtained after pouring by controlling the use mode of the thermal insulation sleeve; cooling water can only gradually rise from the lower portion of a mould cavity by means of a cooling water path formed by the cavity wall in a partitioned mode, so that it is guaranteed that the cooling mode is achieved, no dead water zones exist in a cooling process of the steel ingot by means of the cooling water circulation mode, cooling speed is even, the water-cooling mould will not deform, service life is long, and each steel ingot mould is used about 500 times.
Owner:SHANDONG BAODING HEAVY IND
Die internally provided with free-shaped water way and manufacturing method of die
The invention discloses a die internally provided with a free-shaped water way and a manufacturing method of the die. The method includes a die core manufacturing procedure. The die core manufacturing procedure includes the steps that a die core is divided into an upper die core body, a lower die core body and the water way on the water way, and a water way model and a lower die core auxiliary forming jig are manufactured firstly; the metal powder pressing technology is used, a lower die core model is pressed through the lower die core auxiliary forming jig, the water way model is placed on the lower die core model and filled with metal powder continuously, the metal powder is pressed, a die core model in which the water way model is embedded is finally formed in a forming groove, sintering and degreasing are conducted on the die core model, the water way model made of resin is removed, the upper die core model and the lower die core model are integrally formed, and the die core internally provided with the free-shaped water way is then manufactured. The free-shaped water way is distributed on the periphery of a cavity in the mode that the track of the free-shaped water way is identical to the shape of the cavity, and the cavity can be evenly cooled.
Owner:SUZHOU TAIKAN MACHINERY CO LTD
Corner glass piece toughening treatment process
InactiveCN101948236AUniform cooling rateUniform stress temperingGlass reforming apparatusGlass tempering apparatusGranularityRoom temperature
The invention discloses a corner glass piece toughening treatment process, which comprises the following steps of: heating a glass plate, and shaping by using a corresponding mold; and blowing air to two sides of the formed glass product by using a blowpipe in a corresponding shape to make the glass product immediately cooled to room temperature, and adjusting the aperture of nozzles at a corner and the distance between the nozzles to make the cooling speed of the internal and external bent parts at the corner of the glass consistent with that of the plane part. Through the process, corner glass with a bent angle of 90 degrees or more than 90 degrees and small bend degree R can be subjected to toughening treatment, the forming precision of finished products is high, the appearance quality of the products is excellent, the finished product ratio is high and the granularity is uniform.
Owner:廖仲明
Rotating vertical water spray quenching equipment for quenching large complicated forged components
The invention discloses rotating vertical water spray quenching equipment for quenching large complicated forged components. The rotating vertical water spray quenching equipment is suitable for quenching large end socket class, cake class and tapered cylinder class forged components and is characterized by designing a series of copying and exchangeable inner water spray systems and iron support pads. The equipment is provided with a universal platform, and different inner water spray systems and iron support pads can be changed in consideration of different types of forged components, so that the equipment is highly targeted. The equipment is simple to operate and stable in running and is energy-conservative and efficient.
Owner:TIANJIN HEAVY EQUIP ENG RES +1
Spray forming cooling system and method for decreasing temperature of ingot blank through spray forming cooling system
The invention discloses a spray forming cooling system and a method for decreasing the temperature of an ingot blank through the spray forming cooling system. The system comprises a spray forming device and a cooling system, the cooling system comprises a heat absorption structure, a cooling device, a circulation power pump, heat conduction media and a heat conduction medium conveying pipeline which is sequentially connected with the heat absorption structure, the cooling device and the circulation power pump to form a heat condition loop. The heat absorption structure is located inside an atomization chamber of the spray forming device and used for cooling the ingot blank or a tray, and the cooling device is located outside the atomization chamber of the spray forming device and used for cooling the heat conduction media of which the temperature is increased because heat of the atomization chamber is absorbed. The heat conduction media flow inside the heat conduction loop in a circulation mode under the action of the circulation power pump to absorb heat in the atomization chamber and perform cooling inside the cooling device. The spray forming cooling system has the advantage that the heat conduction media are adopted for directly cooling the ingot blank or the tray, so that the ingot blank of which the performance meets the requirement is obtained.
Owner:天津佐源新材料科技有限公司
Sintering heat preservation device, sintering machine and sintering method thereof
The invention discloses a sintering heat preservation device, a sintering machine and a sintering method thereof, and belongs to the field of sintering equipment. The heat preservation device comprises a heat preservation cover with an upper opening and a lower opening, a heat exchanger is arranged in the heat preservation cover, the upper opening of the heat preservation cover is sealed, and theheat exchanger is used for preheating the outer air entering the heat preservation cover during sintering operation; and the heat preservation device can fully utilize the heat dissipated by the sintering material surface to form a gradually-reduced trapezoidal temperature field, and the oxygen supply uniformity of the cross section of a sintering trolley is improved, so that the sintering qualityof the upper part of the sintering material layer is improved, and the ore return rate is reduced. The sintering machine comprises the sintering trolley, a ignition furnace and the heat preservationdevice, the sintering machine can supply sufficient oxygen to the sintering material layer while preserving heat, and the quality of the upper part of the sintering material layer and the uniformity of the sintering cross section are improved. According to the sintering method, the above sintering machine is adopted, through setting a reasonable sintering process, the sintering material surface can be ensured to be slowly and uniformly cooled in an environment with sufficient oxygen, the sintering is uniform, and the sintering quality is improved.
Owner:MAANSHAN IRON & STEEL CO LTD
Vertical water-entry thick plate quenching machine
InactiveCN104357645ASmall footprintUniform cooling rateFurnace typesHeat treatment furnacesThick platePerformance index
The invention discloses a vertical water-entry thick plate quenching machine. The quenching machine comprises a quenching tank, wherein one side of the quenching tank is provided with a lifting device, and the other side, corresponding to the lifting device, of the quenching tank is provided with a swinging device, the lifting device comprises a plurality of lifting tracks arranged on one side wall of the quenching tank at intervals, and the lifting track is provided with a lifting trolley, the swinging device comprises beams hinged with the lifting trolleys, and the tank body edge at other side of the quenching tank is provided with a plurality of swinging cranks at intervals; one end of the swinging crank is fixedly connected with a rotating shaft, and the other end of the swinging crank is propped against the bottom of the beam, the swinging crank is driven by a driving device to swing around the rotating shaft; and spraying pipes are respectively arranged at interval parts corresponding to the beams and in the quenching tank. The quenching machine can enter the steel plate into the water in the vertical state, and is capable of effectively improving the quenching effect of the steel plate and improving the mechanical performance index of the product; the floor area of the quenching machine is reduced, and the equipment cost is lowered.
Owner:CERI PHOENIX INDAL FURNACE CO TD +1
Method for improving uniformity of general performance of rolled wire rod
InactiveCN107983769ALow tensile strengthImprove uniformityTemperature control deviceWork cooling devicesLap jointEngineering
The invention discloses a method for improving the uniformity of the general performance of a rolled wire rod. According to the method, the laying temperature Ts is equal to Fs+85 DEG C+(Vs / 0.3m / s)*30DEG C+ / -10 DEG C, wherein Fs is the phase change temperature, VS is the speed of an initial section of a roller bed, the initial section of the cooling roller bed can do reciprocating motion perpendicular to the advancing direction of the roller bed, the length is 1.2-1.5m, the reciprocating motion frequency is 50-60 times / min, the amplitude is 0.10-0.15m, so that the density and the lap joint ofthe wire rod are dislocated, and therefore the performance difference between the edge part and the middle part can be reduced. The method has the advantages that the general strength difference of the steel wire rod can be controlled within 20MPa.
Owner:张宇
Gold jewelry and processing method thereof
The invention discloses a gold jewelry which comprises a barrel, wherein the barrel comprises at least one cylindrical component; each cylindrical component comprises a barrel wall; and the wall thickness at all parts of the cylindrical component is equal, so that the compressive strength of the cylindrical components is greatly improved. The invention further discloses a processing method of the gold jewelry, which comprises the steps of manufacturing an inner cavity mold in a shape of an inner cavity of each cylindrical component, and an outer cavity mold in a shape of an outer cavity of each cylindrical component, pouring first wax into the inner cavity mold to form an inner cavity wax mold with the same shape as the inner cavity of each cylindrical component, fixing the inner cavity wax mold in a mold cavity of the outer cavity mold, allowing a gap value between the inner cavity wax mold and the mold cavity to be constant and equal, pouring second wax into a gap to form an outer cavity wax mold with the same shape as the barrel wall of each cylindrical component, and manufacturing the cylindrical component according to the outer cavity wax mold. The wall thickness of the obtained cylindrical components at all the parts is equal. The producing method can manufacture the cylindrical components with the equal wall thickness value.
Owner:SHENZHEN BATAR INVESTMENT HLDG GRP CO LTD
Intelligent fine cooling control method for normalizing acid pickling unit
ActiveCN110184447AUniform cooling rateReduce foulingFurnace typesHeat treatment process controlStrip steelEngineering
The invention discloses an intelligent fine cooling control method for a normalizing acid pickling unit. According to a target cooling temperature of strip steel in the normalizing cooling process ofa furnace, by means of a cooling model built on the basis of basic data of cooling section equipment, strip steel information data and the target cooling temperature of the strip steel, electromagnetic valve preset data for controlling the cooling speed is given, then the actual performance is detected according to the transverse and longitudinal temperatures of the strip steel, and the set valueof an electromagnetic valve is fed back and corrected, so that the strip steel is uniformly cooled in the transverse direction and the longitudinal direction, and finally the strip steel is good in plate shape and stable in performance whether in the longitudinal direction or the transverse direction. In addition, a strip steel cooling self-adaptive model and a method for correcting models betweendifferent steel coils can meet the requirement for control over the cooling speed uniformity of strip steel made from the same material, and can also achieve accurate control over strip steel made from different materials.
Owner:BAOSHAN IRON & STEEL CO LTD
Central heating and central cooling device used for directional solidification furnace
ActiveCN107385513AReduce casting defectsReduce shadowing effectPolycrystalline material growthFrom frozen solutionsManufacturing technologySingle crystal
The invention discloses a central heating and central cooling device used for a directional solidification furnace, and belongs to the technical field of high temperature alloy processing and manufacturing. In the device, a central heating system and a central cooling system are additionally arranged in the directional solidification furnace, so that the temperature gradient of an high temperature alloy in a directional solidification process is increased, wherein the central heating system comprises a barrel type heating body, the heating body is arranged at a central shaft encircled by a plurality of shutterings arrayed in an annular manner, and the heating body can be used for heating the inner side of a mould shell after the heating body is electrified; the centering cooling system comprises a cylindrical metal tube arranged in the center of a water cooling base plate and used for cooling the inner side of the mould shell by guiding cooling water into the cylindrical metal tube; due to addition of the central heating system and the central cooling system, the temperature gradients for single crystal growth on the inner side and the outer side of a casting in the directional solidification process are consistent, so that fast and efficient directional solidification and single crystal growth can be realized. The method is suitable for manufacture of directional solidification and single crystal parts.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
HRB400E-F coiled reinforced bar fine grain rolling technology method
InactiveCN110125174AImprove satisfactionImproves Strength and ToughnessTemperature control deviceWork treatment devicesHeating furnaceCooling rates
The invention relates to the technical field of steel rolling, in particular to an HRB400E-F coiled reinforced bar fine grain rolling technology method. The HRB400E-F coiled reinforced bar fine grainrolling technology method comprises the following steps that step 1, the heating temperature of a billet in a heating furnace is controlled by means of sectional heating, so that the tapping temperature of the billet is controlled at 1050+ / -20 DEG C, and the temperature difference between the end face and the head and tail is equal to or smaller than 30 DEG C; step 2, water dipping tanks behind passing through pre-finishing rolling and finishing rolling mills are increased to control the temperature of the billet entering into the finishing rolling to 900 DEG C, the temperature before enteringa wire-drawing machine is 810 DEG C, and the temperature of the wire-drawing machine is 860 DEG C; step 3, the phase change cooling rate is increased through air cooling; and step 4, the speed of a conveying roll gang is controlled in sections, the conveying speed of the roll gang is increased gradually, the overlap positions of steel wire rods are pulled out gradually, the stacking density of wire coils is reduced, so that the cooling speed is balanced. According to the HRB400E-F coiled reinforced bar fine grain rolling technology method, the cost is greatly reduced under the premise of meeting the quality.
Owner:盐城市联鑫钢铁有限公司
Method for efficiently reducing bubbles on surface of aluminum bar and using device thereof
The invention discloses a method for efficiently reducing bubbles on the surface of an aluminum bar and a using device thereof. The using device comprises a base, a supporting column, a concave cavity and a hydraulic rod, wherein the supporting column is fixed on one side of the upper end of the base, the concave cavity is formed in the upper end of the supporting column, the hydraulic rod is fixed in the concave cavity, a fixing frame is installed at the top end of the hydraulic rod, a material guide hopper is arranged on the fixing frame, a material guide pipe is arranged at the bottom end of the material guide hopper, and a magnetic plate is installed in the material guide hopper. The method and the using device have the beneficial effects that an electric push rod, a scraping plate and a connecting rod are arranged, in the bubble eliminating process, the electric push rod enables the scraping plate to move up and down in a mold cavity through the connecting rod, then the bubbles gathered on the inner wall of the mold cavity are eliminated, meanwhile, a vibration machine is matched, so that the number of the bubbles on the surface of the aluminum bar during forming can be effectively reduced, the percent of pass of the aluminum bar is improved, and the practicability and the working effect of the device are improved.
Owner:HUBEI SHIMEI TECH
Special quenching liquid for 50Mn steel and quenching method of 50Mn steel bearing ring
InactiveCN104762455AUniform cooling rateGood quenching performanceFurnace typesQuenching agentsQuenchingChloride sodium
The invention discloses special quenching liquid for 50Mn steel and a quenching method of a 50Mn steel bearing ring, and belongs to the field of heat treatment quenching technologies. The quenching liquid comprises, by mass, 18.1-19.1% of water glass, 1.1-1.3% of NaOH, 25.2-26.3% of sodium chloride and the balance of water, wherein the modulus of the water glass is 2.4, and the baume degree of the water glass is 56. The quenching liquid has the advantages of being uniform in cooling speed, good in quenching performance and dispersity, high in storage stability and not prone to deterioration. The 50Mn steel bearing ring quenched through the quenching method has a deep quenching layer and is uniform in quenching hardness, uniform in internal structural form and free of quenching cracks.
Owner:MAANSHAN HUADONG SLEWING BEARING
Cooling equipment for use in machining of GH4169 turbine disk forgings
ActiveCN102424909ASmall footprintIncrease cooling rateFurnace typesHeat treatment furnacesAlloyWater circulation
The invention provides cooling equipment for use in machining of GH4169 turbine disk forgings, which can solve the problems of low cooling rate, instable product quality and the like in the conventional GH4169 ally forging cooling process. The cooling equipment comprises a cooling water tank, wherein the bottom of the cooling water tank is provided with a rack. The cooling equipment is characterized by also comprising a cooling machine, wherein the cooling machine is connected with the cooling water tank through an external circulating pipe; and the cooling water tank is also connected and provided with an internal circulation system.
Owner:WUXI TURBINE BLADE
Cooling device and method for hot assembly equipment
ActiveCN111822937AAvoid product quality degradationFast coolingLighting and heating apparatusMetal working apparatusMetallic materialsProcess engineering
Owner:SGIS SONGSHAN CO LTD
Polymer reactor with novel structure
ActiveCN101829533AUniform cooling rateUniform heating rateChemical/physical/physico-chemical stationary reactorsBody positionsEngineering
Owner:ZHENHAI PETROCHEM JIANAN ENG
Motor with internal evaporative cooling system
PendingCN112803677ASimple structureImprove reliabilityMagnetic circuit rotating partsMagnetic circuit stationary partsElectric machineCooling effect
The invention discloses a motor with an internal evaporative cooling system. The motor comprises a stator, the stator is fixed in a shell, a winding is embedded in a stator slot of the stator, a rotor is arranged on the inner side of the stator slot, the rotor is mounted on a rotating shaft, one end of the rotating shaft is connected with a bearing seat, and the other end of the rotating shaft is connected with a bearing seat I; the bearing seat I is fixed in the right end cover, the right end cover is connected with the right end of the shell in a sealed mode, a motor fan and a driving fan are arranged on the left side and the right side of the bearing seat respectively, the driving fan is installed on the rotating shaft, a cooling liquid driving device is installed in the shell, and a stator gaseous cooling medium channel is formed in the stator; and the rotor is provided with a rotor gaseous cooling medium channel, and the shell is provided with a shell gaseous cooling medium channel. The evaporative cooling medium of the device directly cools the interior of the motor, including a stator core, a winding wire, a rotor and a coil or magnetic steel in the rotor, so that the cooling speed is high, the cooling is uniform, and the cooling effect is good.
Owner:大工电机(上海)有限公司
Technology for manufacturing mold core by using steel molding sand
InactiveCN103567389AHigh thermal conductivityUniform cooling rateFoundry mouldsFoundry coresMolding sandCooling speed
The invention discloses a technology for manufacturing a mold core by using steel molding sand. The technology comprises the following steps: (1) coating the surface of a steel ball with phenolic resin, a curing agent and a lubricating agent so as to prepare the steel molding sand; (2) preparing a steel sand core part by using the steel molding sand according to a conventional sand core production method; (3) placing the steel sand core on a pre-processed location of an integral mold, and carrying out precoated sand core shooting, so that the steel sand core and a precoated sand core are combined so as to form the integral sand core. According to the technology, the steel sand core and the precoated sand core are combined so as to mold and manufacture the mold core; the steel sand core has high heat conductivity coefficient, is capable of increasing the speed of molten iron solidification and accelerating the solidification of molten iron around the steel sand core and replaces a chilling block; the combination of the steel sand core and the precoated sand core is capable of ensuring the uniform cooling speed of each part of a casting and improving the quality of the casting. In addition, the steel sand core has good collapsibility, is particularly suitable for a cavity in the casting and is easy to crush and outflow.
Owner:DALIAN YUANJING FOUNDRY
Casting method of crank case
InactiveCN104874744AUniform cooling rateEliminates the possibility of shrinkageFoundry mouldsFoundry coresChemical compositionMelting temperature
The invention discloses a casting method of a crank case. The crank case is produced from the following chemical components in percentage by weight: 2.6%-3.2% of C, 1.6%-2.2% of Si, 0.4%-1% of Mn, 0.06%-0.08% of S, 0.5%-1% of Cr, 0.8%-1% of Cu, 0.03% of Sn and the balance of Fe. The casting method comprises the operation steps: A, heating and melting the raw materials into a metal liquid at the melting temperature of 1480 DEG C-1500 DEG C; B, putting the metal liquid into a ladle when the metal liquid reaches 1420 DEG C-1450 DEG C, adding a nucleating agent, nucleating the metal liquid so as to obtain a casting liquid; and C, casting the casting liquid to a sand mold from a sprue at the casting temperature of 1320 DEG C-1330 DEG C, and condensing so as to obtain the crank case. Compared with the prior art, the problem of shrinkage porosity due to uneven cooling speed at the thickness junction part when the existing crank case is cast can be solved.
Owner:LIUZHOU BAITIAN MACHINERY
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