张旭,马跃进,赵建国,李建昌,刘金生,郝建军.灭茬刀火焰喷焊 Fe6 涂层组织及耐磨性能[J].表面技术,2015,44(10):40-45.
ZHANG Xu,MA Yue-jin,ZHAO Jian-guo,LI Jian-chang,LIU Jin-sheng,HAO Jian-jun.Microsturcture and Wear-ability of the Stubble-cleaning Cutter with Flame Spray Welding Fe6 Coating[J].Surface Technology,2015,44(10):40-45 |
| 灭茬刀火焰喷焊 Fe6 涂层组织及耐磨性能 |
| Microsturcture and Wear-ability of the Stubble-cleaning Cutter with Flame Spray Welding Fe6 Coating |
| 投稿时间：2015-06-19 修订日期：2015-10-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2015.10.007 |
| 中文关键词: 灭茬刀 氧乙炔火焰喷焊 Fe6 涂层 显微组织 摩擦系数 耐磨性 |
| 英文关键词:stubble-cleaning cutter oxyacetylene flame sprays welding Fe6 coating microstructure coefficient of friction wear resistance |
| 基金项目:国家科技支撑计划项目(2014BAD06B00);现代农业装备研发中心建设项目(XD 2015001) |
| 作者 | 单位 |
| 张旭 | 河北农业大学 机电工程学院, 河北 保定 071001 |
| 马跃进 | 河北农业大学 机电工程学院, 河北 保定 071001 |
| 赵建国 | 河北农业大学 机电工程学院, 河北 保定 071001 |
| 李建昌 | 河北农业大学 机电工程学院, 河北 保定 071001 |
| 刘金生 | 河北农业大学 机电工程学院, 河北 保定 071001 |
| 郝建军 | 河北农业大学 机电工程学院, 河北 保定 071001 |
|
| Author | Institution |
| ZHANG Xu | College of Mechanical and Electric Engineer, Agriculture University of Hebei, Baoding 071001, China |
| MA Yue-jin | College of Mechanical and Electric Engineer, Agriculture University of Hebei, Baoding 071001, China |
| ZHAO Jian-guo | College of Mechanical and Electric Engineer, Agriculture University of Hebei, Baoding 071001, China |
| LI Jian-chang | College of Mechanical and Electric Engineer, Agriculture University of Hebei, Baoding 071001, China |
| LIU Jin-sheng | College of Mechanical and Electric Engineer, Agriculture University of Hebei, Baoding 071001, China |
| HAO Jian-jun | College of Mechanical and Electric Engineer, Agriculture University of Hebei, Baoding 071001, China |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 解决灭茬刀耐磨性不足,报废更换频繁的问题。 方法 在 Q235 钢基体上采用氧乙炔火焰喷焊技术制备 Fe6 涂层,分析涂层的硬度及微观组织形貌,并与原 65Mn 灭茬刀进行摩擦系数、磨损失重对比试验。 结果 Fe6 涂层与基体之间形成了良好的冶金结合。 涂层组织主要由 Fe-Cr-Ni 固溶体合金相、Cr7C3 相、Cr23C6 相和 Cr2B 相组成,表面硬度平均值在 56. 6HRC 左右,约为 Q235 钢的 2 倍。 Fe6 涂层摩擦系数稳定在 0. 65 左右,约为 65Mn 灭茬刀试样的 2 /3;磨损失重实验进行 3 h 后,Fe6 涂层与 65Mn试样的磨损失重相差 1 倍左右。 结论 经氧乙炔火焰喷焊 Fe6 涂层进行表面强化后的 Q235 钢灭茬刀在硬度、耐磨性等方面得到显著提高,使用寿命可得到有效延长。 该研究为氧乙炔火焰喷焊 Fe6 涂层在灭茬刀耐磨强化与修复上的推广及应用提供了可靠的依据,同时也为其他农业机械关键易磨损零部件的表面强化提供了一定的参考。 |
| 英文摘要: |
| Objective To solve the problem of lack of wear resistance, frequent scrapping and replacement of the stubble-cleaning cutter. Methods Fe6 coating was prepared on Q235 steel substrate with flame spray welding technology. The hardness, microstructure and wear resistance were investigated by scanning electron microscope, energy depressive spectroscopy, X-ray diffractometer, microhardness tester and reciprocating friction testing machine, and the contrast test of the coefficient of friction and the wear loss was conducted between the original 65Mn stubble-cleaning cutter and the coating. Results The metallurgical bond between coating and matrix was well formed. The microstructure of the coating was mainly composed of Fe-Cr-Ni phase, Cr7C3 phase, Cr23 C6 phase and Cr2 B phase. The average surface hardness of the Fe6 coating was about 56. 6HRC and was almost 2 times that of the Q235 steel. The coefficient of friction of the Fe6 coating was about 0. 65 and was about 2 / 3 of that of the 65Mn stubble-cleaning cutter sample. After 3 hours of wear weight loss experiment, the difference of the wear weight loss between Fe6 coating and 65Mn sample was about 1 fold. Conclusion After welding, the hardness and wear resistance of the stubble-cleaning cutter were significantly increased and the service life could be effectively extended. This study provides a reliable basis for the popularization and application of the flame spray welding Fe6 coating in wear-resistant strengthening and repairing of stubble-cleaning cutter, and at the same time also provides theoretical and practical basis for the surface strengthening of other easy-wear parts in the agricultural machinery. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号