Dual grain refinement method for automobile aluminum alloy hub

The invention discloses a dual grain refinement method for an automobile aluminum alloy hub. The dual grain refinement method includes the following steps that a, aluminum alloy melt is taken out of a smelting furnace through a preheated casting ladle; b, when the temperature of the aluminum alloy melt is higher than liquidus temperature by 20 DEG C-60 DEG C, an ultrasonic vibration head is immersed below the liquid level of the aluminum alloy melt by 1-10 mm to be treated ultrasonically, the frequency of ultrasonic treatment is 5-30 kHz, the volume power is 1-50 W/cm<3>, and treatment time is 3-40 seconds; c, the aluminum alloy melt is poured into a preheated mold after being treated ultrasonically for hub forming manufacturing. The direct-contact ultrasonic treatment is carried out on the aluminum alloy melt, by means of acoustic cavitation and acoustic streaming effects of ultrasonic waves, forced nucleation in quantity in the aluminum alloy melt is achieved, and the melt convection ...

Method for refinement of rare earth-rich phase of rare earth-magnesium alloy

The invention belongs to the technical field of metal material preparation and casting formation, and relates to a method for refinement of a rare earth-rich phase of a rare earth-magnesium alloy. Rare earth in the rare earth-magnesium alloy comprises one, two or more of 0.5-4% of RE (which is mixture of Ce and La and comprises 50-70% by mass of Ce and the balance La), 0.5-2% of Y, 2-3% of Nd and 1-5% of Gd. The method comprises pouring a magnesium alloy liquid with the temperature 0-40 DEG C higher than that of a liquidus line into a slurry container pre-heated to a preset temperature, dropping an amplitude-change pole to a position 1-25mm lower than a metal liquid surface, simultaneously, starting ultrasonic vibration, carrying out ultrasonic vibration for 1-8min, then controlling a metal melt temperature 5-50 DEG C lower than a liquidus line temperature and carrying out molding on the metal melt subjected to ultrasonic vibration to obtain a magnesium alloy part. Crystal grain size and ...

Casting method and mould for car air conditioning compressor slanting plate

The invention provides a method for casting a swashplate of an automobile air-conditioning compressor and a mould thereof. The method comprises the steps: squeezing press is exerted to melt inside a feed room so as to cause the melt to flow into a die cavity stably from the side surface through a pouring channel; when the die cavity is filled with the melt, pressure-keeping press is exerted to the melt from one end vertical to the die cavity, feeding pressure is exerted to the center of the melt from the other end vertical to the die cavity before the melt is completely solidified and the pressure is canceled after maintained for 4-10s; the squeezing press is canceled after the melt at the connection part of a pouring channel and the die cavity is solidified; the pressure-keeping press is canceled after the melt is completely solidified; then a cast is fetched out by opening the die. The mould provided by the invention essentially comprises the sequentially communicated feed room, pouring ...

Die-casting forming method for aluminum alloy casing die castings

The invention discloses a high-density die-casting forming method for aluminum alloy casing die castings, which can effectively solve the problems of the large-scale aluminum alloy die castings that the gas holes are easily formed, the leakage occurs and the like. The method has comprises the following steps of: (1) adding a technological bridge structure in a mould design, thereby quickly filling to quickly fill the far ends of the die castings; (2) adopting the specific low-temperature casing and high-pressure charging die-casting process to realize high densifying of, and then highly densifying the die castings; (3) adding the vacuum die-casting step on the die-casting mould to assist the die-casting filling process; (4) controlling low gas content of aluminum liquor, and then realizing the casting process of low-gas melt. The composite die casting has the advantages that the porosity rate is smaller less than 5%; the gas content is 1-3cm<3>/(100g Al); and the appearance quality and ...

Dispersion endogenous core-shell hybrid biphase reinforced amorphous composite material and preparation method thereof

The invention belongs to the technical field of copper-zirconium-based amorphous composite materials, and particularly relates to a dispersed endogenous core-shell hybrid biphase reinforced amorphous composite material and a preparation method thereof. The chemical composition expression of the dispersively distributed core-shell hybrid biphase reinforced amorphous composite material provided by the invention is ZraCubAlcSndTae, in which 40 < = a < = 50, 40 < = b < = 50, 4 < = c < = 10, 0.2 < = d < = 0.8, and 3.0 < = e < = 7.0; a + b + c + d + e = 100; a matrix of the composite material is a copper-zirconium-based amorphous alloy, and a reinforcing phase of the composite material is a hybrid two-phase with a core-shell structure. Metallic tin is introduced into an alloy material, and meanwhile, a composite process is designed based on a dealloying reaction in a metal melt, so that the uniformly-dispersed Ta-phase-enriched and B2-phase core-shell hybrid double-phase structure reinforced ...

Pressureless penetration casting method for aluminium-base composite material

Method for preparing and forming solid electrolyte tube for hydrogen detection

The invention discloses a method for preparing and forming a solid electrolyte tube for hydrogen detection. The method comprises the steps of: weighing the raw materials CaCO3, ZrO2 and In2O3 according to a molar ratio of CaCO3 to ZrO2 to In2O3 being 1 to (0.8-0.95) to (0.025-0.1), wet-grinding the raw materials, pressing the mixed powder into a wafer with a diameter of 20-30 mm and a thickness of 2-5 mm, calcining the wafer at 1000-1400 DEG C to obtain CaZr1-xInxO3-alpha (0.05 =< x <= 0.2, atomic ratio), then crushing the wafer into powder, adding the powder into a fused mixture of paraffin wax, oleic acid and beeswax, stirring by using an electromagnetic stirrer, forming the mixture to a tube shape by using a hot pressing injection method, discharging wax at a high temperature, and finally sintering at 1450-1550 DEG C to obtain a CaZr1-xInxO3-alpha (0.05 =< x <= 0.2) electrolyte tube. The electrolyte tube has a smooth surface, a compact structure, high chemical stability and thermal shock ...

Vacuum apparatus used for high vacuum die casting

The invention provides a vacuum apparatus used for high vacuum die casting, which comprises a die casting mold and an evacuation circuit which consists of a vacuum tank, a vacuum pump, a vacuum valve and a microcomputer control unit. The vacuum apparatus is characterized in that the vacuum apparatus also comprises a driving circuit, a solenoid valve, a sensor and a control circuit thereof, wherein the driving circuit is used for starting/stopping the vacuum pump, turning off the vacuum valve and detecting whether the vacuum valve is blocked or not; the solenoid valve is used for controlling the communication between the vacuum valve and the vacuum tank; the on/off of the vacuum valve is controlled by the solenoid valve and driven by compressed air; and the sensor and the control circuit thereof are used for detecting the vacuum pressure of the vacuum tank, the vacuum pressure of a cavity and detecting whether the vacuum valve is blocked or not. Compared with the prior art, the vacuum apparatus ...

Vacuum apparatus used for high vacuum die casting

The invention provides a vacuum apparatus used for high vacuum die casting, which comprises a die casting mold and an evacuation circuit which consists of a vacuum tank, a vacuum pump, a vacuum valve and a microcomputer control unit. The vacuum apparatus is characterized in that the vacuum apparatus also comprises a driving circuit, a solenoid valve, a sensor and a control circuit thereof, wherein the driving circuit is used for starting/stopping the vacuum pump, turning off the vacuum valve and detecting whether the vacuum valve is blocked or not; the solenoid valve is used for controlling the communication between the vacuum valve and the vacuum tank; the on/off of the vacuum valve is controlled by the solenoid valve and driven by compressed air; and the sensor and the control circuit thereof are used for detecting the vacuum pressure of the vacuum tank, the vacuum pressure of a cavity and detecting whether the vacuum valve is blocked or not. Compared with the prior art, the vacuum apparatus ...

Lane passing signal lamp provided with solar panel and fog lamp

The invention provides a lane passing signal lamp provided with a solar panel and a fog lamp. The lane passing signal lamp comprises a base, a bracket, a signal machine case, a power supply converter, a solar panel, a fog lamp and a storage battery, wherein the bracket is in a hollow cylinder shape, and is arranged on the base, the signal machine case is fixedly connected onto the top end of the bracket, the fog lamp and the solar panel are respectively arranged above the signal machine case, the solar panel is positioned behind the fog lamp, and in addition, an angle theta is formed between the solar panel and the horizontal direction; the storage battery is positioned in the signal machine case and is connected with the solar panel; the power supply input ends of the machine case and the fog lamp are respectively connected with the solar panel and the storage battery, and the power supply input ends of the signal machine case and the fog lamp are also connected with a UPS (uninterrupted ...

Method for doping graphene in lithium iron phosphate battery anode slurry

The invention discloses a method for doping graphene in a lithium iron phosphate battery anode slurry. The method comprises the following steps: 1, slowly stirring graphene in ethanol and adding a small amount of a surfactant for infiltration for a period of time; 2, adding a conductive agent into the infiltrated graphene and stirring; 3, adding an aqueous glue to the deionized water, mixing and diluting; 4, adding lithium iron phosphate to the diluted aqueous glue and stirring; 5, adding the infiltrated and stirred graphene and conductive agent to the stirred lithium iron phosphate and conducting high density stirring; 6, adding the remaining the deionized water to the slurry after the viscosity of the slurry reaches a certain value and conducting rotation and revolution for a period of time in the slurry; and 7, adding an appropriate amount of water to adjust to the slurry to a proper viscosity, so as to obtain the dispersed slurry. The method provided by the invention can improve the ...

Method and device for controlling mold temperature of die casting mold

The invention discloses a method for controlling the mold temperature of a die casting mold. The method is characterized in that high-pressure overheated water is introduced into a die casting mold to preheat the mold. The invention also discloses a special device for implementing the method. Compared with the prior art, the method solves all problems caused by the replacement and leakage of the heating medium because water is used as a medium, and the device has a simple structure and is convenient to use; in addition, the heating medium is obtained easily; heating temperature can be set by users according to process demands, so that all parts of the mold can be heated gradually and evenly, and therefore product quality is improved and casting defects are reduced.

Vehicle type recognizer

The utility model discloses a vehicle type recognizer. The vehicle type recognizer can be mounted on a base of different heights, and is convenient to adjust. The vehicle type recognizer is adaptive to environment under high-temperature, low-temperature or high-moisture conditions, and the normal operation of a light screen sensor is ensured. Besides, the problem that the light screen sensor cannot perform effective and stable recognition due to instability of the foundation when heavy-weight large vehicles pass is solved. When a vehicle arrives, the distance between the vehicle and the vehicle type recognizer is detected, and the light screen sensor and a dual-piezoelectric film sensor in the vehicle type recognizer are automatically started to recognize the vehicle.

Cooling control method and device for mold core needle of die casting mold

The invention discloses a cooling control method for a mold core needle of a die casting mold. The method comprises the following specific steps of: firstly introducing cooling water with pressure of 1 MPa and then introducing compressed air with pressure of 0.6 MPa for cooling and air-drying the mold core needle of the die casting mold. The invention also discloses a device for implementing the method. Compared with the prior art, the device has a simple structure and is convenient to use, and a user can set the temperature of the cooling water according to process requirements so as to maintain the temperature of the mold core needle in a certain range constantly, and therefore the product quality is improved and casting defects are reduced.

Application program thread count dynamic regulating method used under isomerous many-core system

The invention discloses an application program thread count dynamic regulating method used under an isomerous many-core system. The application program thread count dynamic regulating method comprises the following steps: based on characteristics of an isomerous many-core hardware framework and characteristics of dynamic periodic changes during program operation, estimating optimal thread count in real time by acquiring state information of a system stage performance counter which reflects program performance changes through a predicating model; according to the optimal thread count, dynamically regulating the thread count of the application program. In order to reduce the system energy consumption while improving the program computational performances by reasonably utilizing computational resources of the isomerous many-core system, an effective solving method is provided.

High-strength nodular cast iron for automobile flywheels and high-density cast molding method thereof

The invention discloses a high-strength nodular cast iron for automobile flywheels and a high-density cast molding method thereof. In the high-strength nodular cast iron base, the pearlite content is 90-95%, the ferrite content is 5-10%, and meanwhile, small amounts of Mn, Ni and Cr and trace amounts of Nb are added to perform alloy reinforcement. The high-strength nodular cast iron for automobile flywheels is composed of the following alloy elements in percentage by mass: 3.2%-3.8% of C, 2.0%-2.5% of Si, 0.1%-0.5% of Mn, 0.1%-1.0% of Ni, 0.2%-1.0% of Cr, 0.01%-0.25% of Nb, at most 0.08% of P, at most 0.025% of S, 0.02%-0.06% of Mg, 0.01%-0.05% of Re and the balance of Fe. The room-temperature tensile strength of the nodular cast iron is greater than 700 MPa, the HB is greater than 280, and the 500 DEG C high-temperature tensile strength is greater than 560 MPa. The live riser is provided with two independent flat riser necks to obtain the high-density flywheel casting, and the dynamic ...

In-situ particle mixed reinforced aluminum-based composite material and preparation method thereof

The invention discloses an in-situ particle mixed reinforced aluminum-based composite material and a preparation method thereof. TiB2 and Mg2Si are taken as particle reinforcements, and are generated by reacting KBF4 and K2TiF6 mixed salts and adding alloy elements, respectively; the volume fractions of the two reinforcements (TiB2 and Mg2Si) in the whole composite material are 1-10% and 2-20%, respectively. The aluminum alloy matrix is an Al-Mg alloy. The preparation method comprises the following steps: pretreatment, namely drying and mixing the alloy accessories and mixed salts; melting the alloy and keeping the temperature at 700-900 DEG C; adding the mixed salts and stirring mechanically; preserving the heat of the melt and synthesizing TiB2; after finishing heat preservation, reducing the temperature to about 700-780 DEG C and removing the reaction salt residue; adding Si in the form of an Al-Si intermediate alloy and adding pure Mg, wherein the atomic ratio of Si to pure Mg is 1: ...

Double inoculant for casting high-silicon aluminium-silicon alloy

The composition of double alterant for casting Al-Si alloy with high Si content is comprised of (wt%) P 10-30%, Sr 10-40%, O 5-40% and the rest is buffer flux, of the above-mentioned component, P is provided in the form of elementary substance or phosphorus salt, Sr is provided in the form of SrCl2 or SrO2 and O is provided in the form of oxide, and all the raw materials are dried, and mechanically mixed. The size of primary crystal obtained by using said alterant is smaller than 20 micrometers, the cocrystal Si is made into granular material, and the tensile strength and percentage elongation of said Al-Si alloy material with high Si content are greatly raised, and its cutting working property can be obvisouly improved.

Heat resisting low expansion silumin and preparation thereof

The invention belongs to the field of non-ferrous materials and preparation and formation thereof, and relates to heat-resisting low-expansion high-silicon cast aluminum alloy. The alloy comprises the following compositions in percentage by mass: 18 to 25 percent of silicon, 1.0 to 2.5 percent of copper, 0.2 to 0.8 percent of magnesium, 0.5 to 2.5 percent of nickel, 0.3 to 0.6 percent of manganese, 0.3 to 1.0 percent of misch metal RE (the content of cerium is more than 40 percent), 0.006 to 0.04 percent of phosphorus, and the balance of aluminum. The production method comprises: firstly, melting raw materials of copper, nickel, silicon and aluminum into an aluminum silicon alloy fused mass; secondly, re-superheating the aluminum silicon alloy fused mass to the temperature of between 850 and 870 DEG C, adding manganese raw materials, and obtaining a mixed fused mass after uniform melting; thirdly, adjusting the temperature of the mixed fused mass to between 780 and 800 DEG C and adding ...

Vehicle mode identifier with alarm and radiating device

The invention discloses a vehicle mode identifier with an alarm and a radiating device. By adopting the vehicle model identifier of the invention, a light curtain sensor and a double-piezoelectric thin film sensor in the vehicle model identifier can be started to identify a vehicle when the vehicle comes, and an energy-saving effect is achieved. Meanwhile, a distance sensor can detect the distance between a vehicle, a person or other objects and the vehicle model identifier, and issue an alarm. Objects are effectively prevented from being hung on or touching the vehicle model identifier. Anti-collision and anti-theft functions are achieved. Moreover, the vehicle model identifier can be used in a harsh environment of high temperature, the internal temperature of the vehicle model identifier equipped with the light curtain sensor can be automatically controlled, and normal and stable use of the light curtain sensor is ensured.

Punch for high-vacuum die casting and lubrication device for punch

The invention discloses a punch for high-vacuum die casting. The punch for high-vacuum die casting comprises a punch body, an ejection rod provided with an axial through hole and a punch ejection rod threaded connecting piece provided with an axial center through hole, wherein an axial center through hole in a certain depth is formed in one end of the punch body and serves as a cooling chamber, the ejection rod is arranged coaxial with the punch body in an opposite mode, the other opposite end is connected with a driving component, the punch ejection rod threaded connecting piece is arranged between the punch body and the ejection rod, the two ends of the punch ejection rod threaded connecting piece are fixedly connected with the end of the punch body and the end of the ejection rod respectively, and a water cooling pipe used for providing cooling water penetrates through the center through hole of the ejection rod and the center through hole of the punch ejection rod threaded connecting ...

Pressureless penetration casting method for aluminium-base composite material

An ordinary-pressure osmosis process for casing A;-base composite material includes such technological steps as mixing high-hardness ceramic particles or whiskers with iron oxide to form porous filler layer, loading it along with Al-alloy material containing Si (5-20%), Ca (0.1-0.8%) and Mg (0.1-1%) into a refractory container, heating, osmosizing at 10-20 mm/hr and condensing to obtain compositematerial containing 40-60% of ceramic phase, or adding appropriate Al-alloy and Sr after osmosis and stirring to obtain the Al-base composite material containing uniformly distributed ceramic phase (5-30%).

Method for eliminating elongated flaky Fe-enriched phase in aluminum alloy

The invention belongs to the technical field of preparation and casting technology of metal, and discloses a method for preparing Fe-containing aluminum alloy and eliminating elongated flaky Fe-enriched phase by applying ultrasonic vibration and adding an alloy element Mn. When Fe content of the aluminum alloy is 1.5 to 5 percent, the alloy element Mn is added according to the formula of Mn/Fe=0.2 to 0.4 during alloy melting. Overheated aluminum alloy liquid with a temperature of 0 to 40 DEG C greater than liquidus temperature is cast into a slurry holding container which is preheated to a preset temperature, an ultrasonic vibrating head is decreased 1 to 25mm below the metal liquid level, and the ultrasonic vibration is started at the same time. The ultrasonic vibration time is 0.2 to 8 minutes; and after the vibration is finished, the temperature of the metal melt is reduced to 5 to 50 DEG C below the liquidus temperature. The Fe-enriched phase in organization of an aluminum alloy part ...

Cast iron material and application thereof in self-lubricating and high-wear-resistance composite cast iron piece

The invention discloses a cast iron material and application of the cast iron material in a self-lubricating and high-abrasion-resistance composite cast iron piece, the cast iron piece has abrasion resistance and self-lubricating performance at the same time, the requirements for abrasion resistance and friction abrasion reduction of the cast iron piece can be met, and by controlling the mass percent of Cr, Mo and Nb in the composite cast iron piece and the carbon content, the abrasion resistance of the cast iron piece is improved. The tensile strength and the impact resistance of the material are remarkably improved, the service life of the iron casting is prolonged, the lubricity and the wear resistance of the material are optimally balanced, the dry friction resistance of the material is remarkably improved, and the iron casting can be applied to occasions with high tensile strength, impact resistance and lubricating performance.

Intelligent tollbooth

The invention relates to the technical field of tollbooths, in particular to an intelligent tollbooth, which comprises a tollbooth body, wherein a large transparent glass window is arranged on the front side of the tollbooth body, a wallboard is arranged on the rear side of the tollbooth body, an automatic door and a large transparent glass window are arranged on the other two sides of the tollbooth body respectively, and a top cover is arranged at the top of the tollbooth body; an automatic window which is convenient to open and close is arranged at the large transparent glass window on the front side; soundproof cotton is arranged on the inner wall of the tollbooth body; a fresh air system for feeding fresh air to an inner space of the tollbooth body is arranged above the top cover; an air curtain system for forming an air curtain covering the automatic window is arranged above the automatic window. According to the intelligent tollbooth, the work of a toll collector can be greatly facilitated ...

Semi solid rheoforming method for metal parts and device therefor

The invention relates to a semi-solid fluidized molding method and a device for metal parts. Liquid metal with the temperature from 0 to 40 DEG C above liquid phase is guided into a pulp container, and then an ultrasonic radiation is lowered down to 1 to 30mm above the liquid surface, ultrasonic radiation is started, and the slurry is cooled at the speed ranging from 0.1 DEG C per second to 3 DEGC per second. The ultrasonic radiation can be pulse radiation or non-radiation pulse with ultrasonic frequency ranging from 12kHz to 80kHz, radiation volume power 5W/cm<3> to 100W/cm<3>, and radiation time from 15s to 1000s; the slurry is poured into molding equipment to be molded into parts after the radiation. The molded part has dense organization, fine and equally distributed grains. The device of the invention comprises a pulp container, a thermostat, an ultrasonic generation and a control unit, a sleeve, and a mold and an injection rod and a molding device. The fluidized molding method and ...

Method for preparing porous titanium powder based on dealloying reaction in metal melt

The invention belongs to the technical field of porous metal preparation, and particularly relates to a method for preparing porous titanium powder based on dealloying reaction in metal melt, Cu element in Cu-Ti alloy powder is selectively dissolved into Mg melt to generate dealloying reaction to generate Mg-Cu melt, and the rest Ti element forms a pore-shaped structure through surface diffusion, so that the porous titanium powder is prepared. And then selectively corroding and removing the Mg-Cu phase by using a corrosive liquid to obtain the porous titanium powder with small pore size and uniform distribution. According to the method, the pore structure of the porous titanium powder can be regulated and controlled by adjusting the Cu/Ti proportion in the Cu-Ti alloy powder, the temperature and time of the dealloying reaction, the stirring speed and the like, and the porous titanium powder with different application prospects is obtained. The method can be used for preparing the porous ...

Vehicle triangular warning indicator provided with fog lamps

The invention provides a vehicle triangular warning indicator provided with fog lamps. The triangular warning indicator comprises a triangular warning indicating frame, a supporting base, three fog lamps, a switch and a power supply, wherein the triangular warning indicating frame is arranged on the supporting base; the three fog lamps are respectively arranged on three top points of the triangular warning indicating frame; the power supply is connected with the fog lamps; the switch is positioned on a cable by which the power supply is connected with the fog lamps. Due to the fact that the fog lamps are arranged on the triangular warning indicator and have relatively far penetration distance, when the triangular warning indicator is placed behind a vehicle which has a failure, a driver of a following vehicle can conveniently see the warning indicator from a relatively long distance, and a very good warning indication effect can be achieved when the triangular warning indicator is used ...

Automatic spraying system for fire extinguisher bottle body

According to the technical scheme, the invention provides an automatic spraying system for a fire extinguisher bottle body. The automatic spraying system for the fire extinguisher bottle body is characterized by comprising a spraying box provided with a spraying cavity and a conveying device penetrating through the spraying box for conveying the bottle body. A spraying device for spraying the bottle body is arranged in the spraying box, and the conveying device is used for conveying the bottle body into and out of the spraying box. A detection mechanism used for detecting the spraying condition of the bottle body is further arranged on one side of the spraying box. The conveying device is provided with a fixing mechanism used for hanging the bottle body and a sealing mechanism used for shielding a bottle opening of the bottle body. The system has the beneficial effects that the bottle body is convenient to hang, the spraying stability is good, and spraying is comprehensive and uniform.

Method for manufacturing die casting die core

The invention discloses a method for manufacturing a die casting die core. In order to solve the problem of difficulty in heat elimination of an elongated wrapped core in the die casting die, a double-layer composite material core is manufactured, wherein the inner layer is made of pure copper with high heat conductivity, and the outer layer is made of refractory erosion-resistant die steel or refractory steel. The double-layer composite structure is made by using a flame hot spraying method, a laser cladding method and an inserting method. Compared with the H13 die steel core, the surface temperature of the bimetal core of the invention is reduced by about 40 DEG C, and thus, the invention can effectively increase the cast yield, reduce the cooling time and enhance the production efficiency of die casting.

Method for manufacturing die casting die core

The invention discloses a method for manufacturing a die casting die core. In order to solve the problem of difficulty in heat elimination of an elongated wrapped core in the die casting die, a double-layer composite material core is manufactured, wherein the inner layer is made of pure copper with high heat conductivity, and the outer layer is made of refractory erosion-resistant die steel or refractory steel. The double-layer composite structure is made by using a flame hot spraying method, a laser cladding method and an inserting method. Compared with the H13 die steel core, the surface temperature of the bimetal core of the invention is reduced by about 40 DEG C, and thus, the invention can effectively increase the cast yield, reduce the cooling time and enhance the production efficiency of die casting.

Telescopic automatic card sender

The invention relates to a telescopic automatic card sender applied to a highway toll collection system. The telescopic automatic card sender comprises a card storage mechanism, a card poking mechanism, a card conveying mechanism and a telescopic mechanism, the telescopic mechanism drives the card conveying mechanism to move forwards and backwards, the card poking mechanism comprises a card poking part mounted at a card outlet end of the card storage mechanism, the card poking part can push a card to the card conveying mechanism in the linear reciprocating process, and the thickness of the contacting portion of the card poking part and the card is smaller than or equal to that of the card. The card is poked in such a manner that the card poking part directly pushes the card to move in linear reciprocating, and abnormal card poking of the card poking mechanism can be avoided when the card is in a non-horizontal state.

Method and device for preparing semisolid metal slurry by mixing vibration

The invention belongs to the technical field of metal semisolid processing, relating to a method and a device for preparing semisolid metal slurry by mixing vibration. A slurry containing container is tightly fixed on a mechanical vibration table, and superheating molten metal 0-40 DEG C higher than the liquidus is poured into the slurry containing container of which the temperature is lower than molten metal temperature. An ultrasonic vibrator is lowered below the molten metal liquid level for 1-25 mm and simultaneously starts low-frequency mechanical vibration and supersonic vibration; after performing mixing vibration for certain time, the molten metal is controlled to be 5-30 DEG C below the liquidus temperature to obtain the semisolid metal slurry of which the solid phase rate is 5-40%. The semisolid metal slurry prepared with the method has fine primary and round grain and even distribution. The device of the invention comprises a slurry containing container, an attemperation unit ...

Lane passing signal lamp provided with solar energy board and alarm

The invention discloses a lane passing signal lamp provided with a solar energy board and an alarm. The lane passing signal lamp comprises a base, a supporting frame, a signal case, a power source converting device, the solar energy board, an electric leakage detecting device, the alarm, a controller and a storage battery, wherein the supporting frame is hollow cylinder-shaped; the supporting frame is mounted on the base; the signal case is fixedly connected with the top end of the supporting frame; the alarm and the solar energy board are mounted on the signal case respectively; the solar energy board is arranged at the rear part of the alarm; a theta angle is formed between the solar energy board and the horizontal direction; the storage battery, the electric leakage detecting device and the controller are arranged in the signal case; the storage battery is connected with the solar energy board; the electric leakage detecting device is connected with the controller and the power line ...

Double inoculant for casting high-silicon aluminium-silicon alloy

Portable vehicle triangular warning indicator provided with fog lamps

The invention provides a portable vehicle triangular warning indicator provided with fog lamps. The triangular warning indicator comprises a triangular warning indicating frame, a supporting base, three fog lamps, a hinging mechanism, a switch and a power supply, wherein the triangular warning indicating frame is arranged on the supporting base through the hinging mechanism; the three fog lamps are respectively arranged on three top points of the triangular warning indicating frame; the power supply is connected with the fog lamps; the switch is positioned on a cable by which the power supply is connected with the fog lamps. Due to the fact that the fog lamps are arranged on the triangular warning indicator and have relatively far penetration distance, when the triangular warning indicator is placed behind a vehicle which has a failure, a driver of a following vehicle can conveniently see the warning indicator from a relatively long distance, and a very good warning indication effect can ...

Heat resisting low expansion silumin and preparation thereof

The invention belongs to the field of non-ferrous materials and preparation and formation thereof, and relates to heat-resisting low-expansion high-silicon cast aluminum alloy. The alloy comprises the following compositions in percentage by mass: 18 to 25 percent of silicon, 1.0 to 2.5 percent of copper, 0.2 to 0.8 percent of magnesium, 0.5 to 2.5 percent of nickel, 0.3 to 0.6 percent of manganese, 0.3 to 1.0 percent of misch metal RE (the content of cerium is more than 40 percent), 0.006 to 0.04 percent of phosphorus, and the balance of aluminum. The production method comprises: firstly, melting raw materials of copper, nickel, silicon and aluminum into an aluminum silicon alloy fused mass; secondly, re-superheating the aluminum silicon alloy fused mass to the temperature of between 850 and 870 DEG C, adding manganese raw materials, and obtaining a mixed fused mass after uniform melting; thirdly, adjusting the temperature of the mixed fused mass to between 780 and 800 DEG C and adding ...

Semi solid rheoforming method for metal parts and device therefor

High-density die-casting forming method for aluminum alloy casing die castings

The invention discloses a high-density die-casting forming method for aluminum alloy casing die castings, which can effectively solve the problems of the large-scale aluminum alloy die castings that the gas holes are easily formed, the leakage occurs and the like. The method has comprises the following steps of: (1) adding a technological bridge structure in a mould design, thereby quickly filling to quickly fill the far ends of the die castings; (2) adopting the specific low-temperature casing and high-pressure charging die-casting process to realize high densifying of, and then highly densifying the die castings; (3) adding the vacuum die-casting step on the die-casting mould to assist the die-casting filling process; (4) controlling low gas content of aluminum liquor, and then realizing the casting process of low-gas melt. The composite die casting has the advantages that the porosity rate is smaller less than 5%; the gas content is 1-3cm<3>/(100g Al); and the appearance quality and ...

Multi-scale endogenous reinforced magnesium-based amorphous composite material and preparation method thereof

The invention belongs to the technical field of magnesium-based amorphous composite materials, and particularly relates to a multi-scale endogenous reinforced magnesium-based amorphous composite material and a preparation method thereof, the composition expression of the composite material is (Mg < 0.65 > Cu < 0.075 > Ni < 0.075 > Ag < 0.05 > Zn < 0.05 > Gd < 0.05 > Y < 0.05 >) < 100-x > Fe < x >, the matrix of the composite material is an Mg-Cu-Ni-Ag-Zn-Gd-Y amorphous alloy, and the Mg-Cu-Ni-Ag-Zn- And the reinforcing phase is endogenous porous Fe particles and is dispersed and distributed in the matrix. The magnesium-based amorphous composite material with high breaking strength, large plastic deformation, high volume fraction of the reinforced phase and stable shape and size can be prepared by introducing the reinforced phase into the Ni-Fe solid solution pre-alloying, and has the advantages of simple process, low smelting temperature and low cost for preparing the magnesium-based amorphous ...

High-strength heat-proof rare earth magnesium alloy and preparation method thereof

The invention discloses a high-strength heat-proof rare earth magnesium alloy and a part formation method. The alloy comprises the following components in percentage by weight: 2.0-6.0% of Zn, 2.0-4.0% of RE, 0.4-0.8% of Zr, 0.6-2.0% of Y and the balance of Mg. The part formation method comprises the following steps: melting magnesium and zinc raw materials into a magnesium-zinc alloy melt, then heating to 720-740DEG C, adding Mg-Re and Mg-Y, and dissolving evenly to obtain a mixed fuse; then heating the mixed fuse to 780-800DEG C, adding Mg-Zr and preserving heat; introducing Ar gas at 700-720DEG C and refining; and preheating an extrusion die, cooling the temperature of the magnesium alloy fuse to a casting temperature, pouring the preheated die and performing direct extrusion formation at 60MPa-2GPa, maintaining pressure and ejecting a casting. The rare earth-magnesium alloy easily generates Mg-Zn-Y quasi-crystal, has excellent room temperature and high temperature mechanical performances ...

Automatic control lane fog light

The invention provides an automatic control lane fog light which comprises a base, a bracket, a fog light case, a power supply converter, a controller and a haze detection sensor, wherein the bracket is in a hollow cylindrical shape and is installed on the base, the fog light case is fixedly connected to the top end of the bracket, the haze detection sensor is installed on the fog light case, and the controller is arranged in the fog light case; the controller is respectively connected with the haze detection sensor and the power supply control end of the fog light case; the power supply input end of the lane fog light is connected with a UPS (Uninterrupted Power Supply) of a station control room through the power supply converter.

Vehicle model identifier provided with fog lamps and adjustable in position of light screen sensor

The utility model discloses a vehicle model identifier provided with fog lamps and adjustable in position of a light screen sensor. The identifier includes a shell, a base, double-piezoelectric-film sensors pre-installed on a lane, fog lamps installed on the outer surface of the shell, a haze detection sensor, and the light screen sensor, a support frame, slide blocks, a driving device, a power supply and a controller, which are installed in the shell. The vehicle model identifier is capable of adaptively adjusting the height of the light screen sensor according to the height of an installation base body, capable of adapting to different kinds of landforms, wide in adaptability, capable of using the haze detection sensor to detect the concentration of fine particles in the air, and capable of automatically starting the fog lamps when visibility is lower so that vehicle identification is convenient.

Simulation testing method based on permanent magnetic wind driven generator electromagnetic model

The invention relates to a simulation testing method based on a permanent magnetic wind driven generator electromagnetic model. The method is implemented with a large permanent magnetic direct-driving wind-driven generator set simulation testing system and a commissioning test controller. The method comprises the following steps: 1) according to the design paper, manufacturing the permanent magnetic wind driven generator electromagnetic model in proportion; 2) installing the manufactured electromagnetic model in the simulation testing system, and connecting the electromagnetic model between a speed reducer and a simulation artificial load or a grid-connected inverter; 3) using the simulation testing system to test the electromagnetic model, and outputting the test results to the commissioning test controller; 4) judging whether the manufactured electromagnetic model meets the design requirement according to the test results by the commissioning test controller, if yes, ending the test, ...