[Problem to Be Solved] A pouring control method for controlling an automatic pouring device with a tilting-type ladle is provided. By the method, a lip of a pouring ladle approaches a sprue of a mold without striking any object located within the range of its movement. Also, by the method, the molten metal that runs out of the ladle can accurately fill the mold. [Solution] The pouring control method comprises the steps of setting a target flow rate of molten metal to be poured, generating a voltage to input it to a motor that tilts the ladle (hereafter, the tilting motor) so as to reach the target flow rate of the molten metal based on an inverse model of a mathematical model of molten metal that runs out of a pouring ladle and an inverse model of the tilting motor, estimating the flow rate of the molten metal that runs out of the ladle, estimating the falling position and getting the estimated falling position to be a target position, and generating a trajectory for the movement of the pouring ladle wherein the trajectory causes the height of the lip of the pouring ladle above the level of a sprite of a mold to decrease.

The present invention discloses a method for designing a refiner plate with equidistant curved bars, comprising following steps of: designing a central bar are of center curved bar and defining the bar angle for the equidistant curved bar; designing circle arcs for curved bars on two sides of center curved bar of equidistant curved bar segment; when the whole refining segment is full of circle arcs, trimming lines of outer circle arcs of the refining segment to complete the design of equidistant circle arcs on the two sides; and if required, dividing the bars into zones. In the present invention, by the definition of the bar angle for the curved bars and the parametric design of the equidistant curved bars by using circle are equations, it is ensured that the flexibility in designing an equidistant curved bar refiner plate is improved.

The present invention discloses a method for designing a refiner plate with equidistant curved bars, comprising following steps of: designing a central bar are of center curved bar and defining the bar angle for the equidistant curved bar; designing circle arcs for curved bars on two sides of center curved bar of equidistant curved bar segment; when the whole refining segment is full of circle arcs, trimming lines of outer circle arcs of the refining segment to complete the design of equidistant circle arcs on the two sides; and if required, dividing the bars into zones. In the present invention, by the definition of the bar angle for the curved bars and the parametric design of the equidistant curved bars by using circle are equations, it is ensured that the flexibility in designing an equidistant curved bar refiner plate is improved.

The present invention relates to a 3D printer using a metal alloy filament, wherein the 3D printer introduces a metal alloy filament (650) through a nozzle (610) formed inside an induction heating coil (620), melts and extrudes the filament, and laminates the filament three-dimensionally inside a chamber (500) heated to a similar temperature. The present invention forcibly introduces a metal alloy filament in a nozzle, heated by an induction heating coil which circularly encloses the exterior of the nozzle and forms a cooling passage therein, by means of a transfer gear connected to a transfer motor. A 3D printer for a metal alloy filament is provided in which, in order to prevent the oxidation of a metal alloy laminate (520), an inert gas is introduced, the outside and heat and air are blocked, and a metal alloy filament (650) that is melted in a nozzle and extruded is laminated one layer at a time on a floor plate (510) installed inside a heated chamber (500) and moving three-dimensionally with respect to the nozzle, in order to firmly attach the filament having little deformation.

The present invention relates to a 3D printer using a metal alloy filament, wherein the 3D printer introduces a metal alloy filament (650) through a nozzle (610) formed inside an induction heating coil (620), melts and extrudes the filament, and laminates the filament three-dimensionally inside a chamber (500) heated to a similar temperature. The present invention forcibly introduces a metal alloy filament in a nozzle, heated by an induction heating coil which circularly encloses the exterior of the nozzle and forms a cooling passage therein, by means of a transfer gear connected to a transfer motor. A 3D printer for a metal alloy filament is provided in which, in order to prevent the oxidation of a metal alloy laminate (520), an inert gas is introduced, the outside and heat and air are blocked, and a metal alloy filament (650) that is melted in a nozzle and extruded is laminated one layer at a time on a floor plate (510) installed inside a heated chamber (500) and moving three-dimensionally with respect to the nozzle, in order to firmly attach the filament having little deformation.

Provided is a sand mold digital flexible extrusion near-net forming optimization method based on a search algorithm. The method includes: dividing a sand mold Computer Aided Design (CAD) 3D model near-net forming region; acquiring a curved surface function of a near-net forming sand mold CAD 3D model cavity; constructing a flexible extrusion array envelope volume optimization objective function; determining a valid optimization interval R; translating the position of a sand mold CAD 3D model cavity to a search initial position; performing a global search in the valid optimization interval R, comparing flexible extrusion array envelope volume values, and saving the larger value as V(x,y).sub.max and the corresponding position as (x,y).sub.max; and completing the search, translating the position of the near-net forming sand mold CAD 3D model cavity to (x,y).sub.max, and executing a flexible extrusion array shape adjusting procedure.

Systems and methods are provided for designing casting and finished component models used to fabricate corresponding casting hardware for a casted component and mechanical components fabricated therefrom. One exemplary method involves identifying a first subset of machined casting surfaces in a casting model of the casted component, identifying a second subset of machined feature surfaces in a finished model of the mechanical component, determining respective machine stock values associated the machined feature surfaces based on distances between the respective machined feature surfaces and the machined casting surfaces, and providing graphical indicia of the respective machine stock values that are influenced by the relationship between the respective machine stock values and a machine stock threshold.

Systems and methods are provided for designing casting and finished component models used to fabricate corresponding casting hardware for a casted component and mechanical components fabricated therefrom. One exemplary method involves identifying a first subset of machined casting surfaces in a casting model of the casted component, identifying a second subset of machined feature surfaces in a finished model of the mechanical component, determining respective machine stock values associated the machined feature surfaces based on distances between the respective machined feature surfaces and the machined casting surfaces, and providing graphical indicia of the respective machine stock values that are influenced by the relationship between the respective machine stock values and a machine stock threshold.

A method of casting a steel semi-product wherein a liquid steel is poured from a ladle to a tundish through a shroud including the steps of determining the light intensity emitted from the surface of the liquid steel in the tundish, detecting, based on said determined intensity, the presence of an open-eye at the surface of the liquid steel and emitting an alert towards an operator when an open-eye is detected.

A method of casting a steel semi-product wherein a liquid steel is poured from a ladle to a tundish through a shroud including the steps of determining the light intensity emitted from the surface of the liquid steel in the tundish, detecting, based on said determined intensity, the presence of an open-eye at the surface of the liquid steel and emitting an alert towards an operator when an open-eye is detected.