基于鍛坯的大型內(nèi)臺階環(huán)件雙件軋制
[Abstract]:The single pass thermal compression test of Q345E steel was carried out by using Gleeble-3500D thermal simulation machine, the flow stress model of ring steel was established, and the 3D numerical simulation model of two-piece rolling of large forging billet inner step ring was established in the finite element simulation software SIMUFACT. The rolling process of large inner step ring in a production cycle is numerically simulated, and its reliability is verified experimentally. The equivalent strain field and temperature field of different parts of ring during hot rolling are studied. Rolling force and metal flow characteristics. The results show that the strain distribution law of the ring during rolling is that the strain of the driving roll, the core roll and the step height of the ring, the strain of the corner region of the ring is obviously larger than that of the other parts of the ring, and the strain closer to these parts is larger than that of the other parts of the ring. It shows that the deformation zone of the whole ring rolling process extends gradually from the contact part and the corner of the forming roll to the ring part. The high temperature region of the ring is narrower and concentrated in the inner part of the ring. The temperature inside the ring is much higher than that of the driving roller and the contact part between the core roll and the ring. The law of variation of rolling force and rolling moment is that the rolling force increases first, then fluctuates in a certain range, and then decreases gradually.
【作者單位】: 太原科技大學金屬材料成形理論與技術(shù)山西省重點實驗室;
【基金】:山西省重點研發(fā)計劃重點項目(03012015004)
【分類號】:TG335
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