A method and system for filling perception correction of large steel castings
A mold-filling and steel-casting technology is applied in the field of large-scale steel castings in the field of mold-filling perception correction methods and systems, and can solve problems such as the inability to simulate the flow and mold-filling behavior of molten steel.
Active Publication Date: 2020-11-13
SANXIN HEAVY IND MACHINERY
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Problems solved by technology
This method cannot simulate the flow and filling behavior of molten steel at a high temperature of 1600 °C
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[0051] The following description and drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments.
[0052] If the accuracy of the simulation is improved by collecting temperature in the actual casting process, it is necessary to select the location in advance according to the simulation results, and set up a temperature measuring device at the corresponding selected location when the mold is molded, but the technical problem in this process is When the temperature measuring device is actually set up, it cannot accurately correspond to the position sel...
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The invention provides a large steel casting mold filling perception correction method and system. According to the invention, in the actual casting process, a mode of embedding thermocouples at characteristic points is adopted; the time when molten metal in a cavity reaches a characteristic point and the temperature change process of the molten metal at the characteristic point are obtained, anda numerical simulation result is improved through actually measured data, so that the numerical simulation model is closer to the high-temperature molten steel casting process, the mold filling and solidification phenomena are described more accurately, and the rationality of the simulation model is improved; physical property parameters and boundary conditions of alloy and casting materials are perfected, and better engineering application of a numerical simulation technology in cast steel is promoted; accurate correspondence between the actual position of the thermocouple and the position ofthe feature point selected by computer simulation is ensured, so that the detected temperature has a high reference degree, and the rationality of the simulation model is further improved.
Description
technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a method and system for perceptual correction of filling of large steel castings. Background technique [0002] More and more foundry enterprises use casting digital simulation to optimize casting process. However, casting numerical simulation technology still faces problems such as oversimplification of physical models, incomplete database of physical parameters of alloy / casting materials, and difficulty in obtaining boundary conditions. [0003] The industry has been committed to improving the accuracy of casting numerical simulation. Accurate measurement of the flow field and temperature field of molten metal at the casting site is the basis for improving the simulation accuracy, but this work is also very difficult. The invention with the application number 201110384125.5 proposes a method for casting mold filling water simulation, and uses hydraulic simulation t...
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IPC IPC(8): G06F30/20
Inventor 王国祥张燕臧国荣
Owner SANXIN HEAVY IND MACHINERY