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| 秸秆揉切机用刀片断裂失效分析 | |
| 引用本文： | 孟海波,韩鲁佳,刘向阳,阎巧娟,刘依.秸秆揉切机用刀片断裂失效分析[J].农业机械学报,2004,35(4):51-54,87. |
| 作者姓名： | 孟海波 韩鲁佳 刘向阳 阎巧娟 刘依 |
| 作者单位： | 1. 中国农业大学非常规饲料所,博士生,100083,北京市 2. 中国农业大学非常规饲料所,教授,博士生导师,通讯作者 3. 中国农业大学非常规饲料所,教授 4. 中国农业大学非常规饲料所,博士生 5. 中国农业大学非常规饲料所,讲师 |
| 基金项目： | 国家“十五”科技攻关项目 (项目编号 :2 0 0 2 BA5 14 A 11)，国家农业科技成果转化资金资助项目 (项目编号 :0 2 EFN2 1690 0 72 4) |
| 摘 要： | 对 9RZ 6 0型秸秆揉切机用刀片的断裂失效进行了宏观、微观和组织分析 ,并测定了 6 5 Mn钢刀片的化学成分。指出刀片金相组织不合理是造成断裂的主要原因 ,同时 ,由于结构设计的不合理造成的应力集中也是刀片断裂的重要原因。在实际工况试验条件下 ,确定了采用 6 5 Mn钢经淬火、等温淬火和低温充分回火的热处理工艺。 |
| 关 键 词： | 秸秆揉切机 刀片 断裂机理 金相组织 |
Study on Fracture Failure of Cutters Used in a 9RZ-60 Model Rubbing and Cutting Machine |
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| Meng Haibo,Han Lujia,Liu Xiangyang,Yan Qiaojuan,Liu Yi.Study on Fracture Failure of Cutters Used in a 9RZ-60 Model Rubbing and Cutting Machine[J].Transactions of the Chinese Society of Agricultural Machinery,2004,35(4):51-54,87. | |
| Authors: | Meng Haibo Han Lujia Liu Xiangyang Yan Qiaojuan Liu Yi |
| Institution: | China Agricultural University |
| Abstract: | The main cause of fracture failure of a cutter used in a rubbing and cutting machine has been found in this work by macro- and micro-analyses, the analysis of chemical constitutions of the cutter made of 65Mn, and metallographic examinations. The results showed that the fracture failure was mainly resulted from unreasonable heat treatment, and the stress concentration due to improper design of the cutters frame might also lead to the failure. An experiment was done to improve the performance of the cutters, which indicated that the cutters made of 65Mn were reasonable under the proper heat treatment. |
| Keywords: | Straw rubbing and cutting machine Cutters Mechanism of fracture Metallographic structure |
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