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摘要：
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针对某航空发动机GH901合金涡轮轴锻件的粗晶、组织不均匀、超声波探伤杂波超标和最终性能不合格问题,对涡轮轴锻造工艺进行了研究。分析了新旧两种锻造工艺对锻件组织和性能的影响,认为,采用"改锻→拔长→镦头"的新变形工艺可以优化GH901合金涡轮轴锻件的组织和性能。通过工艺改进,产品合格率由原来的50%提高到了几乎100%。所生产锻件的组织、性能、超声波探伤等各项指标全部满足技术标准的要求,且已经过试车考核,装机使用。
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In order to slove the problems of the bigger grain size,ununiformity of the structure,ineligibility of ultrason- ic test and ineligible property,the forging process of the GH901 alloy shaft of a certain aeronautical engine was studied by analyzing the influence of the old and new processes on the structure and property of forging,and a new process of"reforming-drawing out-upsetting top end"was used which could optimize the structure and property of the GH901 al- loy shaft forging.By improving the forging process,the eligibility rate could be increased from 50%to 100%.The structure,property and ultrasonic test could meet the requirement of the specification.The process was checked by test and now it is being used.
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作者简介：
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参考文献：
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