利用Gleeble-1500热模拟试验机对300M超高强钢进行了热压缩试验,建立了材料流变应力模型；采用DEFORM 3D有限元软件对300M超高强钢起落架外筒模锻件锤锻成型过程进行了数值模拟,研究了不同工艺参数对锻件成型的影响.结果表明:模锻件在1100℃始锻温度下,经三火成型填充完全,锻件平均应力228 MPa,平均应变1.51.%The material flow stress model for 300M ultra high strength steel has been established by hot compression tests on the Gleeble-1500 thermal simulation testing machine. The hammer forging forming for 300M ultra high strength steel die forging of landing gear cylinder has been investigated by DEFORM 3D FEM software, the influence of hammer forging under different process parameters has been researched in this paper. The results show that: the die forging filled completely at 1 l00℃ initial forging temperature after the three fires;the average stress of the forging is 228 MPa and the average strain is 1.51, which provides technical reference for hammer forging process.
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