RESEARCH ON FRACTURE ANALYSIS AND PERFORMANCE IMPROVEMENT OF INPUT SHAFT IN REACTOR AGITATOR

TAO Jun

doi:10.16579/j.issn.1001.9669.2017.04.044

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RESEARCH ON FRACTURE ANALYSIS AND PERFORMANCE IMPROVEMENT OF INPUT SHAFT IN REACTOR AGITATOR

更新时间：2022-09-22

- RESEARCH ON FRACTURE ANALYSIS AND PERFORMANCE IMPROVEMENT OF INPUT SHAFT IN REACTOR AGITATOR
- Journal of Mechanical Strength Vol. 39, Issue 4, Pages: 991-995(2017)
- 作者机构：
  
  1. 中国石油天然气股份有限公司独山子石化分公司乙烯厂机动处
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.04.044
  CLC：
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TAO Jun. RESEARCH ON FRACTURE ANALYSIS AND PERFORMANCE IMPROVEMENT OF INPUT SHAFT IN REACTOR AGITATOR. [J]. 39(4):991-995(2017)
DOI：

TAO Jun. RESEARCH ON FRACTURE ANALYSIS AND PERFORMANCE IMPROVEMENT OF INPUT SHAFT IN REACTOR AGITATOR. [J]. 39(4):991-995(2017) DOI： 10.16579/j.issn.1001.9669.2017.04.044.

摘要

针对某聚丙烯生产装置中搅拌器34-M-2001输入轴正常运行一定时间后出现多次相同键槽位置处断裂问题,综合分析该轴的强度大小、键槽受力分布及其加工工艺对应力分布的影响等关键因素,研究失效原因并提出优化改进方案。研究表明其断裂原因主要归咎于原设计轴径尺寸过小;此外,材料综合力学性能、键槽加工工艺对应力集中的影响等也是导致裂纹产生的重要因素。在不易改变轴径尺寸的情况下,通过改进材料化学成分,选用力学性能更好的材料;改变键槽尾部加工工艺,降低其键槽尾部应力集中等优化方案,能够很大程度上提高该轴的综合使用性能。改进后该输入端轴的综合使用性能会有很大的提高。上述研究对于提高传动件尤其是带键传动轴的机械性能、使用寿命等方面具有很大的参考价值。

Abstract

In this paper,the input shaft of the agitator 34-M-2001 in a polypropylene device is studied.For the fracture problem of the input shaft in the same key groove,the strength of the shaft,force distribution of the key grooves and its factors such as the processing technology are analyzed synthetically to determine the causes of the failure and propose the optimized improvement program.In the case of the impossibility to change the shaft diameter,the performance of the shaft can be improved by changing the chemical composition of the material or choosing a better material.Simultaneously,the optimization for reducing the stress concentration at the tail of the key grooves is proposed by changing the processing technology.The studies indicate that the improved shaft has an excellent performance.The above researches have a great reference value for improving the mechanical performance,service lift of the transmission parts,especially for the shaft.

关键词

输入轴断裂加工工艺材料力学性能性能优化

Keywords

Input shaftFractureProcessing technologyMechanical properties of materialsPerformance optimization

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