| 摘要: |
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| 关键词: 高能脉冲 表面缺损 精密冷补 |
| DOI： |
| 分类号: |
| 基金项目:再制造技术重点实验室基金项目(914OC85030210OC8504) |
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| High Energy Pulse Precision Cold–welding Technology for Repairing Local Surface Default of Metal Parts |
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ZHANG Qing a, MENG Ling–dong b, YANG Jun–wei a, YUAN Jin–ping b
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a. Department of Equipment Remanufacture Engineering b. Key Laboratory for Surface Engineering of PLA, Academy of Armored Forces Engineering
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| Abstract: |
| Due to the unique energy output mode, high energy pulse precision cold–welding technology with many characteristics, such as fast repair, small heat input and high bonding strength was adopted to repair the metal parts. Through repairing scratch surface of hydraulic piston rod and testing the repaired surface, the results showed that the bonding between the repaired layer and the substrate was strong and there was no significant micro–pore. The width of HAZ was 130 μm. The average hardness of repaired layer was 520 HV. The abrasion resistance improved about 36.4 % compared with the substrate. The high energy pulse precision cold–welding technology is a simple, reliable new repair technique. |
| Key words: high–energy pulses surface defect precision cold–welding |
