Transactions of Materials and Heat Treatment

Title：Optimization on near net forming process for lower anvil of large forgings for marine pile hammer

Authors： Wang Kang Yuan Hailun Shi Yulin

Unit： Bejjing Research Institute of Mechanical & Electrical Technology Ltd China Machinery (Jinan) Precision Forming Engineering Technology Co Ltd

KeyWords： lower anvil loose tooling forging free forging machining allowance finite element simulation

ClassificationCode：TG316

year,vol(issue):pagenumber：2020,45(12):15-20

Abstract：

The lower anvil is usually formed by free forging on a large free forging hydraulic press，then produced by machining. This method has a large machining allowance and a large amount of damage to the metal fiber structure of forgings, which cannot meet the high-standard using requirements. In order to shorten the manufacturing period of lower anvil and improve the quality of forgings to adapt to the complex working conditions, the near net forming technology of lower anvil was optimized, and the conical surface was formed by loose tooling forging process to reduce the heating times of blank so as to reduce the generation of coarse grains for forgings. Furthermore, the forming processes of the two methods were simulated by finite element analysis software Deform, and the appearance and performance of lower anvil forgings formed by the two forming processes were compared with practical examples. The results show that the lower anvil has less machining allowance and more complete forging streamline under the loose tooling forging process, which improves the plasticity and mechanical properties of lower anvil forgings and meets the quality requirements of forgings.

Funds：

泉城“5150”引才倍增计划创新团队（2018002）

王康（1993-），男，硕士研究生 E-mail：2362284468@qqcom 通讯作者：袁海伦（1965-），男，博士，研究员 E-mail：yuanhl@jdsaccn

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