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摘要：
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游车提环的自由锻工艺的锻件加工余量大、材料浪费严重、加工周期长、费用高。结合提环左右对称的形状特点，制定了模具内焖形的胎模锻工艺。考虑到制坯形式是影响锻件定位和成形的关键因素，对比分析了3种制坯方案，结果发现，圆饼形制坯可在圆弧形下模内自动滚动，实现快速、准确定位，为最优方案。运用DEFORM-3D有限元模拟分析软件，对锻件胎模锻成形过程进行模拟，分析锻造过程中的载荷、温度、应力、金属流动规律等重要参数。经实际生产试制，锻件成形良好，制坯方案和锻造工艺满足锻件成形要求，制坯形式和模具设计简单、可靠，模具通用性高，制造的YC-450型游车提环锻件单件减重185 kg，占原自由锻锻件重量的30%，节省机械加工工时30 h，生产效率高，经济效益明显。
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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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基金项目：
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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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作者简介：
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康海鹏（1979-），男，学士，工程师，E-mail：kehappen@126.com
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参考文献：
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