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Abstract：
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The free forging process of lifting ring for traveling block has large machining allowance, serious material waste, long processing cycle and high cost. Combined with the left and right symmetrical shape characteristics of lifting ring, the loose tooling forging process of forming inside the die was designed. Considering that the blanking modes are the key factor affecting the positioning and forming of forgings, three kinds of blanking schemes were compared and analyzed. The results show that the disc-shaped blanking can roll automatically in the lower die with circular arc shape to achieve fast and accurate position, which is the optimal scheme.The finite element simulation analysis software DEFORM-3D was used to simulate the process of loose tooling forging. The important parameters such as load, temperature, stress and metal flow law in the forging process were analyzed. After actual production, the results show that the forgings are well formed，the blanking scheme and forging process meet the forming requirements of forgings，the blanking mode and die design are simple and reliable, and the die has good versatility.The single piece weight of lifting ring forgings for YC-450 traveling block is reduced by 185 kg which is 30% of the weight for original free forgings, and the machining time is saved by 30 h to obtain high production efficiency and good economic benefits.
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Funds：
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2019年中国石油天然气集团公司资助课题（2019B-4014）
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AuthorIntro：
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康海鹏（1979-），男，学士，工程师，E-mail：kehappen@126.com
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Reference：
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