Simulation analysis method for full rolling process of steel rail
A technology of simulation analysis and rolling process, applied in special data processing applications, instruments, electrical digital data processing, etc. Production ins and outs, etc.
Active Publication Date: 2014-10-01
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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Problems solved by technology
When performing single-pass simulation analysis, the specific size of the incoming material is also empirically analyzed for the filling degree of the previous pass to fit a size for rolling simulation, which has poor reliability.
At the same time, the dimensional changes, yield strength changes, and rolling stress changes caused by temperature changes are not introduced.
Therefore, the accuracy of single-pass simulation analysis is quite different from the actual production, which cannot meet the needs of high-precision simulation analysis. At the same time, it is also impossible to judge the metal continuous change law, temperature change law, and stress continuous change law of the metal in each pass. big limitations
Method used
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Embodiment 1
[0064] Taking the technical parameters of a certain type of rail rolling process and the relevant rolling field actual data as examples, the simulation analysis method for the whole rolling process of the present invention is further explained, and the simulation in the rolling process is described in sections. As shown in Table 1, it is the billet rolling schedule of a certain type of rail; as shown in Table 2, it is the universal rolling schedule of a certain type of rail.
[0065] Table 1 is the billet rolling schedule of a certain type of rail
[0066]
[0067] Table 2 is the universal rolling schedule of a certain type of rail
[0068]
[0069] In view of the relatively long production line of the full rolling process of a certain type of rail, it is difficult to complete the numerical calculation at one time; The description is shown in Table 3. "Cooling" in the table represents the numerical simulation process of the gap cooling process of each pass. In the num...
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The invention discloses a simulation analysis method for a full rolling process of a steel rail and belongs to the technical field of rolling production of the steel rail. The simulation analysis method for the full rolling process of the steel rail can effectively judge a continuous change rule, a temperature change rule and a continuous stress change rule in each hole pattern. In the simulation analysis method, an initial temperature distribution parameter and a running time parameter at a stage from discharge of a billet to conveying to a descaling device are obtained by original measurement, other parameters are calculated by loading a commercial finite element analysis software program based on original parameters measured on site, corresponding parameters of each gate subsequently are calculated by loading the commercial finite element analysis software program based on corresponding parameters of rolled materials of the previous gate, and further simulation analysis is carried out.
Description
technical field [0001] The invention relates to a simulation splitting method, in particular to a simulation analysis method for the entire rolling range of a rail, and belongs to the technical field of rail rolling production. Background technique [0002] At present, there are many reports on the technology of rail single-pass rolling simulation in domestic literature. Rolling from billet to rail requires many passes of rolling, and the metal may not be just filled in the pass used in each pass of rolling, and the specific filling degree is difficult to predict. When performing single-pass simulation analysis, the specific size of the incoming material is also empirically analyzed for the filling degree of the previous pass to fit a size for rolling simulation, which has poor reliability. At the same time, the dimensional changes, yield strength changes, and rolling stress changes caused by temperature changes are not introduced. Therefore, the accuracy of single-pass si...
Claims
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Inventor 陶功明朱国明王彥中李波朱华林吕攀峰
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM