高效愈合钢锭内部缺陷的锻造工艺设计

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总结了宽砧径向压实工艺(WRF法),该工艺可使应变集中于钢锭中心区域,并满足孔洞闭合所需的最佳高径比条件,因此可高效愈合钢锭的中心缩孔、疏松.基于该方法,针对压机压力较小的情况,提出了单向大变形压实法.该方法通过两个道次的单方向变形将坯料锻造成扁方状,可以使用小压力实现较大钢锭内缺陷的有效愈合.基于界面焊合原理,针对管板类锻件探伤合格率较低的问题,提出了管板类锻件的锻间保温锻造法.利用该方法成功进行了含缺陷管板的修复实验.以上各锻造工艺均经过工业实验验证,证明其可以顺利愈合锻件内的孔洞型缺陷,提高锻件合格率. This paper summarizes the wide anvil radial compaction process (WRF method), which can concentrate the strain in the center of ingot and meet the optimal height-diameter ratio conditions required for hole closing, so it can effectively heal the center shrinkage cavity of the ingot and loosen Based on this method, a one-way large deformation compacting method is proposed for the case of small press pressure.The method forging the billet into a flat shape by a unidirectional deformation of two passes can be realized with a small pressure Based on the principle of interface welding, aiming at the problem that the pass rate of tube plate forgings is low, the forging insulation forging method of tube plate forgings is put forward.With this method, Repair experiment.The above forging process have been verified by industrial experiments to prove that it can successfully heal the hole-type defects, improve forgings pass rate.
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