SURFACE MORPHOLOGY ANALYSIS OF CONNECTING ROD AND CRANKSHAFT OF COMPRESSOR UNDER DIFFERENT WORKING CONDITIONS

LIN ShaoJiang; LI Shun; DAI JingXiong; HE GuoGeng

doi:10.16579/j.issn.1001.9669.2021.03.010

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SURFACE MORPHOLOGY ANALYSIS OF CONNECTING ROD AND CRANKSHAFT OF COMPRESSOR UNDER DIFFERENT WORKING CONDITIONS

更新时间：2022-09-22

- SURFACE MORPHOLOGY ANALYSIS OF CONNECTING ROD AND CRANKSHAFT OF COMPRESSOR UNDER DIFFERENT WORKING CONDITIONS
- Journal of Mechanical Strength Vol. 43, Issue 3, Pages: 577-581(2021)
- 作者机构：
  
  1. 湖北理工学院机电工程学院
  2. 黄石东贝电器股份有限公司博士后工作站
  3. 华中科技大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2021.03.010
  CLC：
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LIN ShaoJiang, LI Shun, DAI JingXiong, et al. SURFACE MORPHOLOGY ANALYSIS OF CONNECTING ROD AND CRANKSHAFT OF COMPRESSOR UNDER DIFFERENT WORKING CONDITIONS. [J]. 43(3):577-581(2021)
DOI：

LIN ShaoJiang, LI Shun, DAI JingXiong, et al. SURFACE MORPHOLOGY ANALYSIS OF CONNECTING ROD AND CRANKSHAFT OF COMPRESSOR UNDER DIFFERENT WORKING CONDITIONS. [J]. 43(3):577-581(2021) DOI： 10.16579/j.issn.1001.9669.2021.03.010.

摘要

为了探索不同工况条件对冰箱压缩机曲轴和连杆表面形貌的影响,在压缩机可靠性试验的基础上,运用粗糙度仪测量连杆大孔、小孔和曲轴偏心轴、长轴的表面形貌表征值,结合磨损表面形貌进行对比分析。结果表明,压缩机的运行工况对其曲轴连杆的表面形貌及摩擦有较大影响,随着工作时间的增加,压缩机零件磨损面的Ra值均变大,而连杆大孔、小孔磨损面的Rz值呈现明显下降。压缩机的开停次数对运动副零件表面形貌也有一定影响,随着开停次数的增多,连杆大孔磨损面、连杆小孔磨损面的Ra和Rz值均变小;曲轴偏心轴磨损面、曲轴长轴磨损面Ra和Rz值小幅变大。通过对比分析可知,在高温(43℃)工况下分别运行672 h和1 344 h后的压缩机,其曲轴连杆均进入正常磨损阶段;在常温环境(25℃)下分别开停125千次和250千次后的压缩机,连杆仍然处于初期磨合阶段,曲轴进入正常磨损阶段。

Abstract

In order to explore the influence of different working conditions on the surface morphology of crankshaft and connecting rod of compressor,the roughness meter was used to measure the surface morphology characterization value of connecting and crankshaft based on the compressor reliability test. The results show that the working conditions of the compressor have a great influence on the surface morphology of the crankshaft and connecting rod. With the increase of work time,the Ra value of compressor parts surface increases,but the Rzvalue of connecting rod surface decreases obviously. The start-stop of the compressor also has some influence on the surface morphology of the moving parts. With the increase of start-stop times,the values of Raand Rzof connecting rod surface decrease,while the values of Raand Rzof crankshaft surface increase slightly.Through analysis it can be known that the crankshaft and connecting rod are in normal wear stage after running 672 h and 1 344 h at 43℃ . The connecting rod is still in the initial wear stage and the crankshaft is in the normal wear stage after 125,000 and250,000 start-stop cycles respectively at 25℃ .

关键词

压缩机连杆曲轴磨损表面形貌

Keywords

CompressorConnecting rodCrankshaftWearSurface morphology

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