Transactions of Materials and Heat Treatment

Title：Optimization on forging process parameters for 12 t ingot based on orthogonal test

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ClassificationCode：TG316.1+92

year,vol(issue):pagenumber：2020,45(11):20-24

Abstract：

In the forging process, in order to eliminate or improve the defects of loose and shrinkage in the ingot and improve the quality of forgings, the finite element model of 12 t ingot was established under the conditions of different ratios of length to width for material, contact boundary amounts and reduction ratios by finite element simulation software Deform-3D, and the relationships between the three forging factors that affected the closure of forging core cavity were analyzed by the orthogonal test. Then, the influence laws of the ratio of length to width for material, the contact boundary amount and the reduction ratio on the hydrostatic stress and the equivalent strain in the forging process were studied, and the optimized forging process parameters were put forward to improve the forging quality. The results show that when the ratio of length to width for material is 1.0-1.4, the increase of the ratio of length to width for material has little effect on the equivalent strain, when the contact boundary amount is larger than 80 mm, the increase of contact boundary amount has little effect on the hydrostatic stress, when the reduction ratio is 25%-30%, the equivalent strain increases with the increasing of reduction ratio, and when the reduction ratio exceeds 30%, the equivalent strain decreases sharply.

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马继庆（1973-），男，学士，工程师 E-mail：1084362350@qq.com

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