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| 隧道掘进机滚刀刀圈模锻成形工艺的模拟与实验研究 |
| Numerical Simulation and Experiment of Forming Process for Die Forging of TBM Disc Cutter Ring |
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| DOI：10.3969/j.issn.1674-6457.2023.02.014 |
| 中文关键词: 滚刀刀圈 锤上模锻 液压机模锻 数值模拟 模锻成形实验 |
| 英文关键词: disc cutter ring die forging on hammer die forging on hydraulic press numerical simulation die forging forming experiment |
| 基金项目:国家重点研发计划(2022YFE0123700);国家自然科学基金(52161145407);中央高校基本科研业务费资助项目(FRF-TP-20-009A2，FRF-BD-20-08A) |
| Author Name | Affiliation | | WANG Kai | China Railway Engineering Equipment Group Co., Ltd., Henan Xinxiang 453000, China | | WANG Qin | School of Mechanical and Electrical Engineering, Henan Mechanical and Electrical Vocational College, Zhengzhou 451191, China | | WEN Lu | Beijing Xinghang Electro-mechanical Equipment Co., Ltd., Beijing 100074, China | | SHANG Yong | China Railway Engineering Equipment Group Co., Ltd., Henan Xinxiang 453000, China | | WANG Ming-jia | College of Nuclear Equipment and Nuclear Engineering, Yantai University, Shandong Yantai 264005, China | | SUN Chao-yang | School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| 中文摘要: |
| 目的 提出锤上模锻的成形工艺，进行滚刀刀圈的制造，以改善和提高隧道掘进机(Tunnel Boring Machine，TBM)滚刀刀圈的模锻成形质量。方法 基于TMB滚刀刀圈的结构及特征，制定滚刀刀圈的模锻成形工艺，建立锤上模锻和液压机模锻成形的数值模拟模型，通过数值模拟分析对比2种工艺下滚刀刀圈的成形质量和温度场、模具应力等各场变量。基于数值模拟结果，采用锤上模锻的工艺进行刀圈成形实验研究，对比分析实验和数值模拟过程中的打击次数、锻件外观及尺寸、截面流线、飞边长度等特征。结果 数值模拟结果表明，采用液压机模锻成形的刀圈内部及刃部流线易出现折叠缺陷，模锻结束后锻件温降严重且模具应力较大;而采用锤上模锻成形的刀圈刃部流线分布合理，内部成形均匀性较好，模锻结束后锻件温度为992~1 170 ℃，成形模具应力为1 348 MPa，小于液压机模锻的模具应力，满足模具强度要求。锤上模锻成形实验结果表明，成形实验和数值模拟的打击次数较为吻合，成形外观一致，刀圈截面流线分布相似，没有明显的尺寸误差和飞边长度误差。结论 采用锤上模锻成形工艺成形滚刀刀圈具有较高的工艺可行性和较好的成形质量。 |
| 英文摘要: |
| The work aims to put forward the forming process of die forging on hammer and manufacture the disc cutter ring, so as to improve and enhance the forming quality of the disc cutter ring of tunnel boring machine (TBM). Based on the structure and shape characteristics of TBM disc cutter ring, the forming process for die forging was formulated. Subsequently, the numerical simulation models for die forging on hammer and hydraulic press were established respectively. The forming quality of the cutter ring, temperature field, die stress and other field variables under the two processes were analyzed and compared by numerical simulation. Based on the numerical simulation results, the cutter ring forming experiment was carried out under the die forging on hammer, and the characteristics such as the striking times, the appearance and size of the forging, the sectional flow line and the flash length were compared and analyzed during the experiment and numerical simulation. According to the numerical simulation results, the internal and edge flow lines of the cutter ring formed by die forging on hydraulic press were prone to folding defects, and the temperature drop of the forging was serious and the die stress was large after die forging. The flow line distribution at the edge of the cutter ring formed by die forging on hammer was reasonable, and the internal forming uniformity was better. The forging temperature was 992-1 170 ℃ after the die forging, and the forming die stress was 1 348 MPa, which was less than the die stress under the die forging on hydraulic press and met the requirements of the die strength. From the experimental results of die forging on hammer, the striking times in forming experiment and numerical simulation were consistent, the forming appearance was the same, the flow line distribution of the cutter ring section was similar, and there was no obvious error in size and flash length. The disc cutter ring formed by die forging on hammer has higher feasibility in process and better forming quality. |
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