刘娟,崔振山.镁合金AZ31B直齿锥齿轮热锻成形研究[J].精密成形工程,2009,1(1):66-69.
LIU Juan,CUI Zhen-shan.Hot Forging Deformation of Magnesium Alloys AZ31B Spur Bevel Gear[J].Journal of Netshape Forming Engineering,2009,1(1):66-69. |
| 镁合金AZ31B直齿锥齿轮热锻成形研究 |
| Hot Forging Deformation of Magnesium Alloys AZ31B Spur Bevel Gear |
| 投稿时间：2009-04-20 修订日期：2009-07-10 |
| DOI： |
| 中文关键词: 镁合金AZ31B 热锻成形 三维加工图 直齿锥齿轮 |
| 英文关键词: magnesium alloy AZ31B hot forging process 3D processing map spur bevel gear |
| 基金项目: |
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| 中文摘要: |
| 根据镁合金AZ31B的高温流动应力曲线，建立了包含应变的三维加工图，反映了温度、应变和应变速率对功率耗散系数和流变失稳区的影响，确定了合适的热变形范围，即温度为250~325 ℃、应变速率为0.1~1 s-1。在此基础上，研究了镁合金直齿锥齿轮的锻造成形，制定了无齿形预锻和终锻两步等温锻造工艺，在MSC.Marc平台上进行了锻造过程的模拟，基于模拟结果，完成了镁合金直齿锥齿轮的锻造成形实验。 |
| 英文摘要: |
| Three-dimensional processing maps including strain were built according to the flow stress curves of magnesium alloy AZ31B. The three-dimensional processing maps demonstrate the variations of the efficiency of power dissipation and flow instability domains with temperature, strain rate and strain, through which the most favorite deformation domain-the temperature range of 250~325 ℃ and the strain rate range of 0.1~1 s-1 was obtained. On the basis of these results, the two-stage isothermal forming process (preforming operation without gear shape and finish forging operation) of magnesium alloy spur bevel gear was determined. The hot forging process was simulated by the commercial finite element analysis software MSC.Marc. According to the numerical simulation results, the hot forging experiments of magnesium alloy AZ31B spur bevel gear were successfully conducted. |
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