On-line acquisition method for plasticity coefficient of rolled piece during rolling of medium plate
A rolling process and acquisition method technology, applied in the rolling field, can solve problems such as large acquisition error, large difference between tangent slope and average slope, and inaccurate system thickness control
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[0070] The detailed process of the method for online obtaining the plastic coefficient of the rolled sheet during the rolling process of the medium and heavy plate of the present invention will be described in conjunction with the embodiments. A block diagram of AGC control block diagram for the application of AGC to the plastic coefficient of the rolled sheet during the rolling process of the plate is as follows figure 2 Shown.
[0071] The Q235 steel grade is selected in this embodiment, and the parameters are as follows:
[0072] ●Steel type: Q235
[0073] ●Blank specifications: 220mm×1600mm×2810mm
[0074] ●Finished product size: 14mm×2120mm
[0075] ●Oven temperature: 1100℃
[0076] ●Rolling passes: 15 passes
[0077] ●Rolling mill stiffness M: 8000KN / mm
[0078] ●Clear rolling force: 18560KN / mm
[0079] ●Deformation resistance parameters: a 3 = 0.000027, a 4 =0.25381
[0080] The rolling schedule is set as shown in Table 1.
[0081] Table 1 Rolling schedule
[0082]
[008...
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