1330results about "Casting parameters measurement/indication devices" patented technology

A real-time system and method for online monitoring a transient operation in a continuous casting process. The transient operation refers to, but is not limited to, submerged entry nozzle changes, flying tundish changes, product grade changes, etc. This invention treats the aforementioned transient operations as batch processes and utilizes multiway principal component analysis to develop a multivariate statistical model to characterize normal process transitions based on carefully selected historical process data. Such a model is used by an online monitoring system to determine if a continuous caster transient operation is normal. This monitoring system can further be used to predict an impending breakout, one type of catastrophic process failures which may occur in a continuous casting process, during the transient operation. Process variables that are most likely related to the predicted breakout are identified by the system such that appropriate control actions can be taken to prevent an actual breakout occurrence.

A method for forming electronic assemblies includes providing a plurality of IC die each having IC bonding conductors and a workpiece having workpiece bonding conductors. A curable dielectric film is applied to the IC bonding conductors or the workpiece surface. The plurality of IC die are placed on the workpiece surface so that the plurality of IC bonding conductors are aligned to and face the plurality of workpiece bonding conductors to provide a first bonding. The placing is performed at a vacuum level corresponding to a pressure <1 kPa, and at a temperature sufficient to provide tackiness to the curable dielectric film. The plurality of IC die are then pressed to provide a second bonding. A temperature during pressing cures the curable dielectric film to provide an underfill and forms metallic joints between the plurality of IC bonding conductors and the plurality of workpiece bonding conductors.

Disclosed is a sand casting molding machine for double indexing molds in a mold string. The machine can include a shot chamber having sand, a swingable squeeze head, a lateral squeeze head, a core setter, a mold hold down, a mold retention device and a mold string conveyor.

According to the invention, a method for identifying and determining die position of a metallurgical vessel for measuring its fireproof lining using electromagnetic radiation, an operator is defined in relation to a two or three dimensional structure with a known shape and size. Distance values and corresponding measuring angles are determined in the area of the structure and measured distance value and corresponding measuring angles are used to scale the operator. The dimension and resolution of the operator in the pixel coordinates system and the anticipated values of the operator are adapted to the measured polar coordinates. A result value is then formed from the differences between the anticipated values of the operator and the measured values and the location of the structure that is sought is determined from the position of the minimum result value.

The invention relates to a surface defect form and depth on-line lossless detection method of a high-temperature continuous casting blank, comprising the following steps: scanning the surface distanceof the transverse direction of the high-temperature continuous casting blank along a pulling-speed direction of the casting blank; measuring distance two-dimensional lattices on the running directionand the transverse direction of the casting blank; converting the distance two-dimensional lattices into a distance dimensional HSB two-dimensional diagram; and finally processing the HSB two-dimensional diagram to recognize the forms of surface defects and calculate the depths of the defects in a quantization mode. The method can effectively inhibit the interference of non-defect oxidative sheetiron in a defect form, realize the surface defect form and depth on-line detection of the continuous casting blank above 950 DEG C and evaluate the quality of the surface defects of the integral high-temperature continuous casting blank. The surface defect form and depth on-line lossless detection method has significances for increasing the automatic level of the surface detect detection of the high-temperature continuous casting blank, reducing the production cost, increasing the direct rolling and heat transmitting and loading rate of the continuous casting blank and has important guiding functions for developing a continuous casting blank quality forecast system, improving a continuous casting process technology and increasing the casting blank quality.

The invention relates to a device and a method for detecting the flow state of molten steel in a crystallizer. The device comprises a funnel (7), a tail fin (8) and an indicator bar (6), wherein the funnel (7) is soaked in the molten steel (20) of a crystallizer and fixedly connected with the tail fin (8), the indicator bar (6) is fixedly connected with the upper part of the funnel (7) and can berotatably and axially supported on an indicator disc (5) through a rotating bearing (17), the indicator disc (5) can make planar rotation relative to a tray (4), the upper end of the indicator bar (6) which is rotatably and axially supported on the indicator disc (5) is connected with a pull rod (2) which is stuck to a stress strain foil (15), and a signal transmission line (16) is connected to asignal collector by the stress strain foil (15) on the pull rod (2). The device and the method of the invention can favorably detect the flow speed and the flow direction of the molten steel, provideevidence for adjusting the parameters of a steel casting process and further achieve the aims of improving the surface quality of casting blanks and reducing steel casting and bleeding accidents. Thedevice and the method of the invention have wide application prospects in the continuous casting production field.

A system and method for tracking and positioning a continuous cast strand in a casting plant. Lateral positions and, optionally, elevational positions of a cast strand are monitored by sensors as casting proceeds and are fed to a computer-based system as corresponding position information where the information is stored as associated data. The computer-based system processes the associated data and generates corresponding control signals which are used to control at least one correcting device to maintain desired orientation of the cast strand as casting proceeds.

The invention discloses an online sizing and weighing system for a multi-flow multi-sizing continuous casting slab. The online sizing and weighing system is adopted, the weight of each casting slab is measured precisely, the weight and the part of which the weight deviation is set are converted into a sizing length modification valve, the sizing length value is amended continuously, fixed-weight cutting is achieved, and the weight of the casting slab is controlled in a reasonable range; a sizing and weighing device set is arranged on each flow, all flows are independent mutually, and the ejection waiting time caused by the flow amount is shortened; according to different sizing lengths, a plurality of weighing devices are arranged on each flow, and the number of the weighing device depends on the longest sizing required by production; a closed-loop control system is adopted for the multi-flow multi-sizing online sizing system. The system is high in automatic degree and stable to work, all the flows are independent mutually, the ejection waiting time caused by the flow amount is shortened, the influence of the weighing process on the production is small, the casting slab after passing through a roll gang can pass through the weighing roller way smoothly, and the system is simple and practical.

The invention discloses a continuous casting billet online weight fixing system. The continuous casting billet online weight fixing system comprises continuous casting billets, a flame cutting device and a weight measuring device, the flame cutting device is used for cutting the continuous casting billets, and the weight measuring device is used for measuring the weights of the continuous casting billets. The weight measuring device comprises a computer, a length measuring module, a width measuring module and a thickness measuring module, wherein the length measuring module, the width measuring module and the thickness measuring module are electrically connected with the computer and used for measuring the lengths, the widths and the thicknesses of the continuous casting billets correspondingly. The computer calculates the real-time weights of the continuous casting billets by combining the measured sizes of the continuous casting billets according to the density information, obtained in advance, of the continuous casting billets and sends the real-time weights to the flame cutting device for fixed weight cutting of the continuous casting billets. The length measuring module comprises a laser range finder used for measuring the level at which the flame cutting device arrives at an original position so as to compensate and correct the measured lengths of the continuous casting billets. The continuous casting billet online weight fixing system can accurately calculate the real-time weights of the continuous casting billets for fixed weight cutting of the continuous casting billets, and therefore the weight deviation of the cut continuous casting billets is stabilized within an allowable range, and the requirement of efficient continuous casting production can be met.

In a hybrid injection system of a die casting machine, the occurrence of a large electric power loss can be prevented by avoiding a large current at a pressure-holding step and the size of a motor is reduced.

In an injection system comprising an injection cylinder (16) housing an injection piston (15) for injecting molten metal to a mold and an electric booster (8) of hydraulic cylinder type, a head chamber (8H) to the electric booster communicates fluidly with a head chamber (16H) of the injection cylinder, causing a booster piston rod (5) to be housed in the electric booster (8) to move linearly and thus pressing under pressure to move the injection piston to perform injection molding. Because a stop valve (25) is provided in a pipe that causes the head chamber (16H) of the injection cylinder to communicate with a rod chamber (8R) of the booster (8), it is possible for the pressure of the hydraulic oil to act on a head area of the electric booster at a pressure-increasing step for increasing pressure of the molten metal, and for pressure of the hydraulic oil to act on a rod area of the electric booster at a pressure-holding step for holding pressure of the molten metal.

The invention provides a temperature sensor detector which comprises a temperature controller, a heating module, a standard temperature sensor, a judgment module and a fixing module, wherein the fixing module is used for fixing the standard temperature sensor and the temperature sensor to be detected; the standard temperature sensor and the temperature sensor to be detected are used for sensing the temperature of the heating module; the temperature controller is used for controlling the heating module to warm or cool according to set temperature; and the judgment module is respectively electrically connected with the standard temperature sensor and the temperature sensor to be detected, and is used for comparing the temperature sensor to be detected with the standard temperature sensor and judging whether the temperature sensor to be detected is qualified.

An online forecasting method for an internal crack defect of a casting blank belongs to the field of metal casting and comprises a network composed of a computer of L3, a computer of L2 and a computer of L1 and data transmission among the computers, wherein on the basis of the existing computer of L2 or the same control level, a model computer is arranged to obtain the internal stress strain information of the casting blank by real-time online analog computation of cooling and solidifying process of the casting blank, and then forecasts the internal crack defect of the casting blank in real time according to the variation tendency of the strain; then the quality information of the casting blank in the production process is timely transmitted to the cutting computer of L1 which is used for optimizing and controlling the cutting process of the casting blank with the defect; the quality control accuracy of a product and the product percent of pass are increased, the percent of pass and the commercial grade of the product are increased, and the whole economic benefit of an enterprise is further increased. Therefore, the online forecasting method for the internal crack defect of the casting blank can be widely applied to optimizing/control field of the cutting process of the casting blank during the production of slab continuous casting.

The invention belongs to the field of metallurgy continuous casting process numerical analog simulation, and discloses a method for determining heat flux density of a continuous casting crystallizer based on flux film and air gap dynamic distribution. According to a crystallizer copper plate structure and the size of the section of a continuous casting, a two-dimensional transient heat/force coupling finite element model with a 1/4 blank shell-crystallizer cross section system as a computation object is built, and the temperature of the surface of the blank shell, the temperature of the hot surface of a copper plate and the width of the clearance of a blank shell-crystallizer interface are determined. If the temperature of the surface of the blank shell is higher than the solidification temperature of casting powder, the heat resistor of the blank shell-crystallizer interface is formed by connecting a melt cinder layer, a solidification slug layer and a crystallizer-solidification slug interface heat resistor in series. If the temperature of the surface of the blank shell is smaller than or equal to the solidification temperature of the casting powder, the heat resistor of the blank shell-crystallizer interface is formed by connecting an air gap layer, a solidification slug layer and a crystallizer-solidification slug interface heat resistor in series. The method has good universality, and is suitable for determining the heat flux density of all existing continuous casting machine types and sectional crystallizers.

The invention relates to a method and a device for automatically controlling argon blowing quantity for a steel ladle of a continuous casting machine. In the method, by designing an argon blowing curve, argon quantity in the steel ladle can be effectively adjusted based on weight of molten steel in the steel ladle so as to control argon blowing quantity, thus achieving the optimum argon blowing effect. The device comprises an adjusting valve, an argon pipeline, a flow detection device, a pressure detection device and a PLC (programmable logic controller) control system, wherein, the argon pipeline is equipped with the adjusting valve, the flow detection device for gas flow detection and the pressure detection device; and the adjusting valve, the flow detection device and the pressure detection device are respectively connected with the PLC control system. The method and the device have the advantages of improving purity of the molten steel and reducing slag inclusion by a large-ladle argon blowing mode, maintaining even temperature during the casting process of the molten steel in the large ladle, preventing the molten steel from being mixed into a middle ladle owing to eddy effect in the case of low level, enhancing argon blowing effect and reducing temperature loss.

The invention relates to a method and a device for measuring the thickness of a continuous casting shell. Shoot nails are centralized on a set position by using at least two continuously arranged shoot nail guns, accurately calculating and controlling the shooting time every time so as to accurately measure the thickness of the casting shell at any time after analysis. The invention has the advantages of high measurement precision, simple and convenient operation, simple structure, convenient production, reasonable design in the measurement method and accurate analysis result. The thickness of a condensed casting shell of an actual casting blank can be followed and measured, and the measurement result provides sufficient basis for casting process personnel to analyze the production and the quality. The invention is particularly suitable for measuring the thickness of the casting shell of an arc-shaped continuous casting machine.

A casting furnace for manufacturing a metal casting comprises an interior chamber and a secondary chamber through which the metal casting passes from the interior chamber into external atmosphere. A seal along the secondary chamber surrounds and seals against the metal casting to separate the interior chamber from the external atmosphere in a manner which allows for an extended period of continuous casting. A force producing mechanism typically forces the seal against the metal casting. Multiple seals may be used sequentially to increase the duration of the sealing capability and the continuous casting process.

In a method for sealing a tap opening in a metallurgical container a plug with a plug sleeve and a refractory flowable material is provided having a metal rod or pipe surrounded by a protective pipe connected thereto. The plug sleeve and the protective pipe are made of a material resistant to a molten mass of metal in the metallurgical container only for a short period of time. The material is a temporarily heat-insulating material which cokes within the molten mass of metal and is cardboard or wood. The time of introduction of the plug sleeve is controlled based on measured parameters of the molten mass. The plug is introduced into the tap opening by guiding the plug with the metal rod or pipe through the molten mass in the metallurgical container. The plug sleeve changes by temperature action of the molten mass of metal such that the flowable material is distributed in the tap opening and seals the tap opening. The tap opening is then closed from the exterior of the metallurgical container and the plug sleeve in the tap opening as well as the protective pipe are coked and destroyed.

The present invention discloses a method for measuring the surface temperature of a high-temperature casting blank in water-fog medium; the water-fog concentration of the surface of the high-temperature casting blank is measured and transmitted to a remote computer through an air water-fog concentration sensor; the attenuation coefficient K lambda of water-fog medium to radiant energy in the water-fog concentration is gained by the remote computer through the relation curve between the attenuation coefficients of the water-fog medium and the radiant energy; temperature data tested by a thermodetector are modified by the attenuation coefficient K lambda and the emissivity of filam on the surface of the casting blank and the real temperature of the surface of the casting blank in the water-fog medium can be measured in real-time; the gain of accurate temperature has an important support on the application of continuous casting front-edge technology such as electromagnetic mixing, secondary cooling dynamic control and so on in dynamic slight press and has very important significance on improving the quality of casting blank and the whole level of continuous casting.

The invention provides a method for the cast level measurement in a mold by means of sensors for fiber optic temperature detection, which are disposed in the mold copper plate at the height of the casting level. The invention further comprises respective sensors. Fiber optic cables are disposed in said sensors, which allow simple, reliable and highly locally resolved temperature monitoring at the height of the casting level by means of a suitable temperature analysis system. By means of the temperatures determined by the sensors, a conclusion can be made as to the exact height of the casting level. Furthermore, the shape of the casting level shaft may be determined by means of which further parameters of the casting process become accessible.

The invention discloses a smelting and casting method and a casting device of a titanium-based amorphous composite material. The smelting and casting method has the advantages that the force effect in the electromagnetic induction principle is utilized, alloy in a crucible is suspended in the air for smelting, so that the pollution caused by contact with the crucible is avoided and the control for the alloy heating state is realized; when the smelting process is finished, a heating power supply is switched off, an electromagnetic valve for suction casting or spray casting is opened, so that the rapid mold-filling of alloy solution is realized; in the spray-casting process, the control to the spray-casting speed is realized by changing the level of the air pressure in a gas storage tank, and further the amorphous composite material with different microscopic structures is prepared by controlling the solidification process; the defects in the prior art are overcome, the large-size titanium-based amorphous composite material is obtained by integrating the prior art, the stable control of the process to the organization structure is realized by adjusting process parameters such as temperature, temperature holding time, circular heating times and casting speed, and an ideal optimized design structure is obtained.

A mold handling system for carrying and transporting sand molds comprises a mold handling conveyor with multiple mold exits to provide different outputs for the sand molds. The mold handling system may include flags which can be used to mark selected molds to segregate the sand molds into different groups. A control system responds to flag sensors and tracks the molds to selectively control output of sand molds through the mold exits. Methods of handling sand molds using a mold handling system are also disclosed.

An apparatus for continuously casting thin strip includes a caster having a pair of casting rolls having a nip there between capable of delivering cast strip downwardly from the nip and an first enclosure capable of forming a protective atmosphere into which the strip can be formed in loop to extend over a plurality of rollers into pinch rolls with the strip having a strain of less than 0.4%, which may be provided by a plurality of rollers at entry of the strip into the pinch rolls to carry the strip into the pinch rolls, with at least a first entry roller having a diameter between 200 and 650 millimeters and being below a majority of other rollers.

A chalcogenide compound synthesis method includes homogeneously mixing solid particles and, during the mixing, imparting kinetic energy to the particle mixture, heating the particle mixture, alloying the elements, and forming alloyed particles containing the compound. Another chalcogenide compound synthesis method includes, under an inert atmosphere, melting the particle mixture in a heating vessel, removing the melt from the heating vessel, placing the melt in a quenching vessel, and solidifying the melt. The solidified melt is reduced to alloyed particles containing the compound. An alloy casting apparatus includes an enclosure, a heating vessel, a flow controller, a collection pan and an actively cooled quench plate. The heating vessel has a bottom-pouring orifice and a pour actuator. The flow controller operates the pour actuator from outside the enclosure. The quench plate is positioned above a bottom of the collection pan and below the bottom-pouring orifice.