ANALYSIS AND RESEARCH ON THE FRACTURE FAILURE OF A MELT-PUMP GEAR ROTOR

LI YunPeng; LI Feng; WEI Wei; ZHANG HongTao; HAN SiYuan

doi:10.16579/j.issn.1001.9669.2018.04.034

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ANALYSIS AND RESEARCH ON THE FRACTURE FAILURE OF A MELT-PUMP GEAR ROTOR

更新时间：2022-09-22

- ANALYSIS AND RESEARCH ON THE FRACTURE FAILURE OF A MELT-PUMP GEAR ROTOR
- Journal of Mechanical Strength Vol. 40, Issue 4, Pages: 971-977(2018)
- 作者机构：
  
  1. 郑州机械研究所有限公司齿轮工程技术中心
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.04.034
  CLC：
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LI YunPeng, LI Feng, WEI Wei, et al. ANALYSIS AND RESEARCH ON THE FRACTURE FAILURE OF A MELT-PUMP GEAR ROTOR. [J]. 40(4):971-977(2018)
DOI：

LI YunPeng, LI Feng, WEI Wei, et al. ANALYSIS AND RESEARCH ON THE FRACTURE FAILURE OF A MELT-PUMP GEAR ROTOR. [J]. 40(4):971-977(2018) DOI： 10.16579/j.issn.1001.9669.2018.04.034.

摘要

针对某化工厂的关键设备-熔融泵用齿轮转子多次断裂失效问题,提出了一种分析方案。通过损伤断口分析、材料性能分析、微观组织分析和强度校核等方法,找出失效根源,得出失效结论并提出了改进方案。分析结果表明:该熔融泵用齿轮转子在复杂工况下,由于设计和加工过程中存在明显缺陷,导致其在运行过程中应力集中较大位置频繁失效。通过改变其结构,减少应力集中、选用优良材料、改进生产工艺等方式可有效提高该轴的使用性能,满足其功能需求。本研究结论在改善关键传动件,尤其是齿轮类传动轴的使用性能方面可提供一定的参考价值。

Abstract

This paper proposed an analysis scheme for the multiple fracture failure of the gear rotor of the melt pump used in the key equipment of a chemical plant.Through the analysis of damage fracture analysis,material property analysis,microstructure analysis and strength checking,the root causes of failure were found,the conclusion of failure was concluded and the improvement scheme was proposed.The analysis results show that the gear rotor of molten pump has some defects in the process of design and machining under complicated conditions,which leads to its frequent failure during operation.By changing its structure,reducing stress concentration,the selection of good materials,improve production processes and other ways to effectively improve the performance of the shaft to meet their functional needs.The results of this research could provide certain reference value in improving the service performance of key transmission parts,especially gear type transmission shafts.

关键词

齿轮转子裂纹应力集中失效

Keywords

Gear rotorCrackStress concentrationInvalid

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