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针对H800×300规格轧制时间长,轧制负荷大,成材率指标偏低,进行了孔型修改。通过将粗轧机原来的立轧+平轧孔型,改为全平轧孔型,有效的降低了轧制负荷,减少了轧制时间,成材率指标由88.5%提升至92.64%。
H800 × 300 specifications for a long rolling time, rolling load, the rate of finished products index is low, the hole-type changes. By changing the original vertical rolling + flat rolling pass of the roughing mill into a full-flat pass, the rolling load is effectively reduced and the rolling time is reduced, and the yield index is increased from 88.5% to 92.64%.