毛艺伦, 张清东, 孙朝阳. 高温合金管材挤压变形及挤压工艺的流函数法研究[J]. 工程科学学报, 2011, 33(4): 449-454. DOI: 10.13374/j.issn1001-053x.2011.04.008
引用本文: 毛艺伦, 张清东, 孙朝阳. 高温合金管材挤压变形及挤压工艺的流函数法研究[J]. 工程科学学报, 2011, 33(4): 449-454. DOI: 10.13374/j.issn1001-053x.2011.04.008
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MAO Yi-lun, ZHANG Qing-dong, SUN Chao-yang. Study on extrusion forming of superalloy tubes by flow function method[J]. Chinese Journal of Engineering, 2011, 33(4): 449-454. DOI: 10.13374/j.issn1001-053x.2011.04.008
Citation: MAO Yi-lun, ZHANG Qing-dong, SUN Chao-yang. Study on extrusion forming of superalloy tubes by flow function method[J]. Chinese Journal of Engineering, 2011, 33(4): 449-454. DOI: 10.13374/j.issn1001-053x.2011.04.008
shu

高温合金管材挤压变形及挤压工艺的流函数法研究

Study on extrusion forming of superalloy tubes by flow function method

    摘要
  • 摘要: 针对IN690高温合金管材在挤压过程中挤压力大及预测不准等问题,以优化设计挤压工艺和参数进而实现降低挤压力、减少能耗为目标,应用流函数法建模分析挤压变形过程和建立挤压力求解模型,得到了稳定挤压时金属的速度流线.研究了挤压温度、摩擦因数和模具角度等因素对挤压力的影响规律,建立了IN690高温合金管材挤压工艺参数与挤压力的关系.以挤压力最小为优化目标,优化设计了最佳挤压温度和模具角度.

     

    Abstract: There exist high extrusion force and its inaccurate forecast in the extrusion process of an IN690 superalloy tube.After the flow function method was used to analyze the extrusion process and to construct a mathematical model of solving the extrusion force,the flow lines of the superalloy were presented in the stable extrusion state.The relationship between technological parameters and extrusion force of the IN690 superalloy tube was determined on the basis of studying the effects of extrusion temperature,friction coefficient and mold angle on the extrusion force.The extrusion temperature and mold angle were optimized by minimizing the extruding force.

     

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