| 摘要:为提高柴油机连杆的疲劳强度，采用喷丸强化工艺对其内孔进行处理。在保证喷丸强度、覆盖率、粗糙度等要求的前提下，制定合理的工艺参数，对经喷丸强化工艺处理的区域进行参与应力测试，测试结果表明：连杆大小端内孔表面为残余压应力，且残余压应力层较深，可为后续进行实机验证提供数据支撑。 |
| 关键词: 喷丸 疲劳 工艺参数 |
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| Shot Peening Technology for Connecting Rod Inner Hole |
| WANG Weidong,XU Yan,SHEN Xiang,DONG Yunqing |
| Shanghai Marine Diesel Engine Research Institute， Shanghai 201108， China |
| Abstract:In order to improve the fatigue strength of diesel engine connecting rods，shot peening strengthening technology was used to process their inner holes.On the premise of ensuring the requirements of shot peening strength，coverage rate，roughness，etc.，reasonable process parameters were formulated to conduct stress tests on the areas processed by shot peening strengthening technology.The test results show that there is residual compressive stress on the surface of the inner holes at the large and small ends of the connecting rod，and the residual compressive stress layer is deep，which can provide data support for subsequent practical verification. |
| Key words: shot peening fatigue process parameter |
