Influence of Internal Quality of Gear on Strength and Life of Gear

Xiaolu Zhu

doi:10.16578/j.issn.1004.2539.2021.09.017

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Influence of Internal Quality of Gear on Strength and Life of Gear

Test·Analysis | 更新时间：2022-11-10

- Influence of Internal Quality of Gear on Strength and Life of Gear
- Journal of Mechanical Transmission Vol. 45, Issue 9, Pages: 112-118(2021)
- 作者机构：
  
  1.北京科技大学，北京 100083
  2.沃德传动（天津）股份有限公司，天津 300409
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2021.09.017
  CLC：
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朱孝录.齿轮内在品质对齿轮强度和寿命的影响[J].机械传动,2021,45(09):112-118.

Zhu Xiaolu.Influence of Internal Quality of Gear on Strength and Life of Gear[J].Journal of Mechanical Transmission,2021,45(09):112-118.
朱孝录.齿轮内在品质对齿轮强度和寿命的影响[J].机械传动,2021,45(09):112-118. DOI： 10.16578/j.issn.1004.2539.2021.09.017.

Zhu Xiaolu.Influence of Internal Quality of Gear on Strength and Life of Gear[J].Journal of Mechanical Transmission,2021,45(09):112-118. DOI： 10.16578/j.issn.1004.2539.2021.09.017.

摘要

齿轮的内在品质是由齿轮的材料品质、锻造品质和热处理工艺品质等所决定的。约有35％的齿轮的失效与齿轮内在品质太差有关。主要论述了渗碳淬火齿轮内在品质的部分项目（表层脱碳、内氧化、粗大马氏体、碳化物组织、非马氏体组织、黑色组织、残余奥氏体、晶粒度等）对齿轮强度和寿命的影响，其影响程度多数以试验结果的数据表示。用5种材料渗碳淬火齿轮的,R,-,S,-,N,曲线试验结果数据（齿轮脱碳层深度0.2～0.3 mm时，齿轮的弯曲疲劳极限应力,σ,F,lim,降低23%～50%），说明了齿轮表面脱碳对齿轮弯曲疲劳强度的极大影响。

Abstract

The internal quality of gear is determined by material quality， forging quality and heat treatment process quality. Failure of about 35% of the gears is related to their poor internal quality. The influence of some items of internal quality of carburizing quenching gear （surface decarburization， internal oxidation， coarse martensite， carbide structure， non-martensite structure， black structure， retained austenite， grain size， etc.） on gear strength and life are mainly discussed， the degree of influence is mostly expressed by the data of experimental results. Finally， the ,R-S-N, curve test data（gear decarburization layer depth 0.2~0.3 mm， the bending endurance limit stress ,σ,F,lim, at tooth root is reduced by 23%~50%） of carburizing and quenching gears with 5 materials show that the great influence of gear surface decarburization on gear bending fatigue strength.

关键词

齿轮渗碳淬火内在品质热处理缺陷强度和寿命

Keywords

GearCarburizing quenchingInternal qualityHeat treatment defectStrength and life

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