| 反应电火花堆焊修复齿轮轴 |
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| 引用本文： | 郝建军,马跃进,樊云飞,李建昌,刘洪杰.反应电火花堆焊修复齿轮轴[J].农业工程学报,2008,24(11):99-102. |
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| 作者姓名： | 郝建军 马跃进 樊云飞 李建昌 刘洪杰 |
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| 作者单位： | 1. 河北农业大学机电工程学院,保定,071001
2. 河北农业大学教务处,保定,071001 |
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| 基金项目： | 河北省自然科学基金资助项目 |
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| 摘 要： | 利用DZ-1400型电火花堆焊机,以工业纯钛TA2为电极,以工业纯氮为保护气和反应气,在45号钢试件表面上制备了TiN金属陶瓷堆焊层。采用KYKY-2800型扫描电镜观察了堆焊层表面形貌、显微组织和磨损形貌,采用D/max-RA型X射线衍射仪分析了堆焊层物相,采用MH-6型显微硬度计测定了堆焊层显微硬度,采用自制磨损实验机对比了堆焊层与淬火回火65Mn钢的磨损性能,分析了电火花堆焊TiN金属陶瓷层用于轴颈修复的可行性。结果表明:反应电火花堆焊TiN金属陶瓷层与母材之间为冶金结合,堆焊层主要由电极材料钛、反应合成的TiN和基体材料铁组成,堆焊层显微硬度高,耐磨性好。变速箱齿轮轴修复实践表明,反应电火花堆焊TiN金属陶瓷层可用于修复损伤轴类件。
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| 关 键 词： | 反应电火花堆焊 修复 耐磨性 齿轮轴 |
| 收稿时间： | 2007/1/10 0:00:00 |
| 修稿时间： | 9/8/2008 12:00:00 AM |
Gear shaft restoration with reactive electric-spark build-up welding |
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| Hao Jianjun,Ma Yuejin,Fan Yunfei,Li Jianchang and Liu Hongjie.Gear shaft restoration with reactive electric-spark build-up welding[J].Transactions of the Chinese Society of Agricultural Engineering,2008,24(11):99-102. |
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| Authors: | Hao Jianjun Ma Yuejin Fan Yunfei Li Jianchang and Liu Hongjie |
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| Institution: | Hao Jianjun 1,Ma Yuejin 1,Fan Yunfei 2,Li Jianchang 1,Liu Hongjie 1 |
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| Abstract: | TiN cermet coating was deposited on 45#steel substrate with model DZ-1400 electric-spark build-up welding machine,and the industrial pure titanium(TA2)was used for electrode and the industrial pure nitrogen for shielding and reactive gas.Surface morphology,microstructure and wear morphology of the coatings were investigated using model KYKY-2800 scanning electron microscope modeled.Phases of the coatings were analyzed using model D/max-RA X-ray diffractometer.Microhardness of the coatings was tested using model MH-6 hardness-testing device. The wear-resisting property of coatings was compared with 65Mn steel treated by the quenching and backfiring technology using the home-made abrasion machine.The feasibility was analyzed for reactive electric-spark build-up welding TiN cermet coating to be used for gear shaft restoration.The results indicated that excellent bonding between the coating and the carbon steel substrate was ensured by the strong metallurgical interface.The coatings were mainly made up of Ti coming from electrode,TiN ceramic particle reactive synthesized and Fe coming from substrate.The coatings were of good hardness and wear-resisting property.The experience of the gear shaft restoration indicated that the technology of reactive electric-spark build-up welding TiN cermet coating was feasible to repair the damaged shaft parts. |
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| Keywords: | reactive electric-spark build-up welding restoration wear resistance gear shaft |
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