锻压技术

G2500曲轴辊锻件的模锻成形过程的模拟与分析

英文标题：Simulation and analysis on die forging process for the roll forging workpiece of G2500 crank shaft

作者：胡福荣蒋鹏

单位：北京机电研究所

关键词：G2500曲轴辊锻件模锻数值模拟

分类号：TG316

出版年,卷(期):页码：2015,40(8):153-157

摘要：

针对G2500曲轴的曲柄宽度较大、模锻时很难充满的特点，采用先辊锻制坯、再模锻成形的工艺进行加工。通过数值模拟对设计的4种G2500曲轴辊锻件的模锻过程中的金属流动情况及压力机吨位的变化进行了模拟分析。在保证模锻型腔填充良好、曲柄充满、所需模锻设备吨位满足的情况下，确定了辊锻件4为合理的辊锻毛坯。最后通过实际生产对模拟结果进行验证，结果表明，实际生产结果与模拟吻合，采用合理的辊锻件尺寸，可以在8000 t热模锻压力机上获得质量良好的G2500曲轴。

Pointing to the characteristic of G2500 crank shaft that the crank width is much bigger and it is difficult to fill forging die, the technology of first roll forging and then die forging was adopted, and the flow of metal and change of press tonnage press during the die forging process of designed four kinds of G2500 crank shafts were studied by numerical simulation. That the ideal roll forging blank is roll forging workpiece 4 is determined under the condition of assuring the good filling of die forging cavity, fully filled crank and satisfied tonnage of die forging equipment. Finally, the result of the numerical simulation was tested by actual production. It proves that actual production and numerical simulation are coincident, and the G2500 crank shaft with good quality can be obtained by using 8000 t hot forging press and adopting rational dimension of roll forging workpiece．

基金项目：

胡福荣（1976-），女，硕士，高级工程师

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